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Huang Y, Feng Y, Li Y, Tan K, Tang J, Bai J, Duan J. Immobilization of Amino-site into a Pore-Partitioned Metal-Organic Framework for Highly Efficient Separation of Propyne/Propylene. Angew Chem Int Ed Engl 2024; 63:e202403421. [PMID: 38533686 DOI: 10.1002/anie.202403421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 03/28/2024]
Abstract
Adsorptive separation of propyne/propylene (C3H4/C3H6) is a crucial yet complex process, however, it remains a great difficulty in developing porous materials that can meet the requirements for practical applications, particularly with an exceptional ability to bind and store trace amounts of C3H4. Functionalization of pore-partitioned metal-organic frameworks (ppMOFs) is methodically suited for this challenge owing to the possibility of dramatically increasing binding sites on highly porous and confined domains. We here immobilized Lewis-basic (-NH2) and Lewis-acidic (-NO2) sites on this platform. Along with an integrated nature of high uptake of C3H4 at 1 kPa, high uptake difference of C3H4-C3H6, moderated binding strength, promoted kinetic selectivity, trapping effect and high stability, the NH2-decorated ppMOF (NTU-100-NH2) can efficiently produce polymer-grade C3H6 (99.95 %, 8.3 mmol ⋅ g-1) at room temperature, which is six times more than the NO2-decorated crystal (NTU-100-NO2). The in situ infrared spectroscopy, crystallographic analysis, and sequential blowing tests showed that the densely packed amino group in this highly porous system has a unique ability to recognize and stabilize C3H4 molecules. Moving forward, the strategy of organic functionalization can be extended to other porous systems, making it a powerful tool to customize advanced materials for challenging tasks.
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Affiliation(s)
- Yuhang Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Yanfei Feng
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Yi Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Kui Tan
- Department of Chemistry, University of North Texas, Denton, TX 76203, United States
| | - Jie Tang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Junfeng Bai
- School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Jingui Duan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, China
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Weng ZH, Kopittke PM, Schweizer S, Jin J, Armstrong R, Rose M, Zheng Y, Franks A, Tang C. Shining a Light on How Soil Organic Carbon Behaves at Fine Scales under Long-Term Elevated CO 2: An 8 Year Free-Air Carbon Dioxide Enrichment Study. Environ Sci Technol 2024; 58:8724-8735. [PMID: 38717952 DOI: 10.1021/acs.est.3c10680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Building and protecting soil organic carbon (SOC) are critical to agricultural productivity, soil health, and climate change mitigation. We aim to understand how mechanisms at the organo-mineral interfaces influence SOC persistence in three contrasting soils (Luvisol, Vertisol, and Calcisol) under long-term free air CO2 enrichment conditions. A continuous wheat-field pea-canola rotation was maintained. For the first time, we provided evidence to a novel notion that persistent SOC is molecularly simple even under elevated CO2 conditions. We found that the elevated CO2 condition did not change the total SOC content or C forms compared with the soils under ambient CO2 as identified by synchrotron-based soft X-ray analyses. Furthermore, synchrotron-based infrared microspectroscopy confirmed a two-dimensional microscale distribution of similar and less diverse C forms in intact microaggregates under long-term elevated CO2 conditions. Strong correlations between the distribution of C forms and O-H groups of clays can explain the steady state of the total SOC content. However, the correlations between C forms and clay minerals were weakened in the coarse-textured Calcisol under long-term elevated CO2. Our findings suggested that we should emphasize identifying management practices that increase the physical protection of SOC instead of increasing complexity of C. Such information is valuable in developing more accurate C prediction models under elevated CO2 conditions and shift our thinking in developing management practices for maintaining and building SOC for better soil fertility and future environmental sustainability.
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Affiliation(s)
- Zhe H Weng
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
- School of Agriculture, Food, and Wine, The University of Adelaide, Urrbrae, South Australia 5064, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Steffen Schweizer
- School of Life Sciences, Technical University of Munich, Freising 85354, Germany
| | - Jian Jin
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Roger Armstrong
- Agriculture Victoria Research, Department of Energy, Environment and Climate Action, Horsham, Victoria 3401, Australia
| | - Michael Rose
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, Wollongbar, New South Wales 2477, Australia
| | - Yunyun Zheng
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Ashley Franks
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, Victoria 3086, Australia
- Centre for Future Landscapes, La Trobe University, Melbourne, Victoria 3086, Australia
- La Trobe Institute for Sustainable Agriculture and Food, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Caixian Tang
- Department of Animal, Plant & Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne, Victoria 3086, Australia
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3
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An SJ, Kal Y, Jeong M, Kang S, Kwak B, Kim H, Ryu S, Cha S. Simple Protein Analysis by Droplet Paper Spray Ionization Mass Spectrometry with Polyolefin Silica-Based Paper. Molecules 2023; 28:7339. [PMID: 37959759 PMCID: PMC10647424 DOI: 10.3390/molecules28217339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 11/15/2023] Open
Abstract
Paper spray ionization mass spectrometry (PSI MS) has emerged as a notable method for the rapid analysis of biological samples. However, the typical cellulose-based paper tip is incompatible with protein detection due to the strong interaction between cellulose hydroxyl groups and proteins. In this study, we utilized a commercially available polyolefin-based synthetic paper, Teslin®, as an alternative PSI substrate for simple protein analysis. We have named this method "droplet PSI" MS, as the aqueous protein solution droplet retains its shape on the Teslin® paper tip. For droplet PSI, no further chemical pretreatment was necessary for the Teslin® substrate; the only required preparation was shaping the Teslin® paper into a triangular tip. In droplet PSI MS, protein ion signals were instantly detected from a protein solution droplet upon applying a spray solvent in situ along with high voltage (HV). When compared with conventional PSI MS, our method demonstrated superior sensitivity. The droplet PSI MS utilizing Teslin® also showcased flexibility in real-time observation of protein alterations induced by an acid additive. Additionally, the effects of spray solvent composition and the application method were discussed.
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Affiliation(s)
| | | | | | | | | | | | | | - Sangwon Cha
- Department of Chemistry, Dongguk University, Seoul 04620, Republic of Korea
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4
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Jurowski K. The toxicological assessment of hazardous elements (Pb, Cd and Hg) in low-cost jewelry for adults from Chinese E-commerce platforms: In situ analysis by portable X-ray fluorescence measurement. J Hazard Mater 2023; 460:132167. [PMID: 37619281 DOI: 10.1016/j.jhazmat.2023.132167] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/24/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023]
Abstract
This article focusses on the environmental implications of low-cost jewelry for adults from Chinese e-commerce platforms ((n = 8) with heavy metal impurities (Pb, Cd and Hg) and their potential impact on human health and the environment. The study highlights the advantages of using portable X-ray fluorescence (pXRF) analysis for rapid, non-destructive, and in situ analysis of heavy metals in jewelry. The results reveal that all products (n = 106) contained heavy metals at varying levels, Hg being the most commonly detected heavy metal. The fact that 71% of the samples exceeded the EU limit for Pb and 51% exceeded the EU limit for Cd is alarming and highlights the need for stricter regulations and monitoring of the jewelry industry to mitigate the risks posed by heavy metals in the environment. The study emphasizes the importance of using pXRF analysis to identify heavy metals in jewelry and address the literature gap in environmental risk assessments of Pb, Cd, and Hg in low-cost jewelry for adults from China. In general, the findings call for urgent action to ensure the safety of consumers and prevent environmental pollution by strengthening regulations and monitoring the jewelry industry.
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Affiliation(s)
- Kamil Jurowski
- Laboratory of Innovative Toxicological Research and Analyzes, Institute of Medical Studies, Medical College, Rzeszów University, Al. mjr. W. Kopisto 2a, 35-959 Rzeszów, Poland; Department of Regulatory and Forensic Toxicology, Institute of Medical Expertises, ul. Aleksandrowska 67/93, 91-205 Łódź, Poland.
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5
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Wang X, Han J, Li Z, Li B, Wan Y, Liu L. Editorial: Insight into plant spatial omics: mass spectrometry imaging. Front Plant Sci 2023; 14:1273010. [PMID: 37670864 PMCID: PMC10476088 DOI: 10.3389/fpls.2023.1273010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Affiliation(s)
- Xiaodong Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing, China
| | - Jun Han
- Genome British Columbia Proteomics Centre, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Zhili Li
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bin Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Yinglang Wan
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, China
| | - Liangyu Liu
- Beijing Key Laboratory of Plant Gene Resources and Biotechnology for Carbon Reduction and Environmental Improvement, and College of Life Sciences, Capital Normal University, Beijing, China
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Kim TW, Uchida S, Kim M, Cho SG, Kim SJ, Kondo T, Segawa H. Phase Control of Organometal Halide Perovskites for Development of Highly Efficient Solar Cells. ACS Appl Mater Interfaces 2023; 15:21974-21981. [PMID: 37000640 DOI: 10.1021/acsami.2c22769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
To develop a highly efficient solar cell using organometal halide perovskites, its microscale structure control is one of the most important factors because the microstructural defects inside the organometal halide perovskite are harmful to charge carrier flow and, thus, degrade device performance. In this study, we confirmed the existence of large physical gaps at the grain boundary in a methylammonium iodide (MAPbI3, MA = CH3NH3) perovskite with transmission electron microscopy (TEM) analysis and revealed that the physical gap prevents charge carrier flow in the MAPbI3 perovskite. To minimize the physical gap and its negative influences, the grain size of the MAPbI3 perovskite was optimized by increasing the portion of the cubic phase via microstructural phase control using liquid nitrogen (LN2). Through microstructural phase control of the MAPbI3 perovskite, its grain boundaries and physical gap were significantly decreased, and 20.23% power conversion efficiency (PCE) was achieved with a single cation MAPbI3 perovskite solar cell.
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Affiliation(s)
- Tae Woong Kim
- Department of Applied Chemistry, College of Science and Technology, Konkuk University, Chungwon-daero 268, Chungju-si 27478, Chungcheongbuk-do, Korea
| | - Satoshi Uchida
- Research Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
| | - Myoung Kim
- Research Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
| | - Sang Geun Cho
- Department of Applied Chemistry, College of Science and Technology, Konkuk University, Chungwon-daero 268, Chungju-si 27478, Chungcheongbuk-do, Korea
| | - So Jeong Kim
- Department of Applied Chemistry, College of Science and Technology, Konkuk University, Chungwon-daero 268, Chungju-si 27478, Chungcheongbuk-do, Korea
| | - Takashi Kondo
- Research Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
- Department of Materials Engineering, Faculty of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hiroshi Segawa
- Research Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo 153-8904, Japan
- Department of General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan
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7
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Huang T, Wu T, Huang Y, Lin W, Ma J, Sun LP, Guan BO. Nanoscale Adsorption, Assembly, and Deionization Dynamics Recorded by Optical Fiber Sensors. ACS Nano 2023. [PMID: 37145868 DOI: 10.1021/acsnano.3c01507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Capacitive deionization in environmental decontamination has been widely studied and now requires intensive development to support large-scale deployment. Porous nanomaterials have been demonstrated to play pivotal roles in determining decontamination efficiency and manipulating nanomaterials to form functional architecture has been one of the most exciting challenges. Such nanostructure engineering and environmental applications highlight the importance of observing, recording, and studying basically electrical-assisted charge/ion/particle adsorption and assembly behaviors localized at charged interfaces. In addition, it is generally desirable to increase the sorption capacity and reduce the energy cost, which increase the requirement for recording collective dynamic and performance properties that stem from nanoscale deionization dynamics. Herein, we show how a single optical fiber can serve as an in situ and multifunctional opto-electrochemical platform for addressing these issues. The surface plasmon resonance signals allow the in situ spectral observation of nanoscale dynamic behaviors at the electrode-electrolyte interface. The parallel and complementary optical-electrical sensing signals enable the single probe but multifunctional recording of electrokinetic phenomena and electrosorption processes. As a proof of concept, we experimentally decipher the interfacial adsorption and assembly behaviors of anisotropic metal-organic framework nanoparticles at a charged surface and decouple the interfacial capacitive deionization within an assembled metal-organic framework nanocoating by visualizing its dynamic and energy consumption properties, including the adsorptive capacity, removal efficiency, kinetic properties, charge, specific energy consumption, and charge efficiency. This simple "all-in-fiber" opto-electrochemical platform offers intriguing opportunities to provide in situ and multidimensional insights into interfacial adsorption, assembly, and deionization dynamics information, which may contribute to understanding the underlying assembly rules and the exploring structure-deionization performance correlations for the development of tailor-made nanohybrid electrode coatings for deionization applications.
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Affiliation(s)
- Tiansheng Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Tongyu Wu
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Yan Huang
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Wenfu Lin
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Jun Ma
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Li-Peng Sun
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
| | - Bai-Ou Guan
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communication, Institute of Photonics Technology, Jinan University, Guangzhou 510632, China
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Kampasakali E, Nakas A, Mertzanidis D, Kokkini S, Assimopoulou AN, Christofilos D. μ-Raman Determination of Essential Oils' Constituents from Distillates and Leaf Glands of Origanum Plants. Molecules 2023; 28:molecules28031221. [PMID: 36770888 PMCID: PMC9920943 DOI: 10.3390/molecules28031221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/28/2023] Open
Abstract
A novel, inexpensive and simple experimental setup for collecting μ-Raman spectra of volatile liquids in very small quantities was developed. It takes advantage of capillary forces to detain minute volatile liquid volumes. Spectra of volatile and even scattering or absorbing media can be measured more effectively. The method is used to facilitate the collection of intensity-consistent Raman spectra from a series of reference compounds present in Origanum essential oils, in order to quantify their constituents by multiple linear regression. Wild grown Origanum plants, collected from five different regions in Greece and taxonomically identified as O. onites, O. vulgare subsp. hirtum and O. vulgare subsp. vulgare, were appropriately distilled to acquire their essential oils. Comparison of the Raman results with those from headspace gas chromatography-mass spectrometry (HS GC-MS) confirmed the successful relative quantification of the most abundant essential oil constituents, highlighting the similarities and differences of the three Origanum taxa examined. Finally, it is demonstrated that directly measuring the leaf peltate glandular hairs yields exploitable results to identify the main components of the essential oil they contain, underlining the potential of in situ (field or industry) measurements utilizing microscope-equipped portable Raman spectrometers.
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Affiliation(s)
- Elli Kampasakali
- School of Chemical Engineering & Physics Laboratory, Faculty of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Alexandros Nakas
- Laboratory of Organic Chemistry, School of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Dimitrios Mertzanidis
- Laboratory of Systematic Botany and Phytogeography, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Stella Kokkini
- Laboratory of Systematic Botany and Phytogeography, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Andreana N. Assimopoulou
- Laboratory of Organic Chemistry, School of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Natural Products Research Centre of Excellence (NatPro-AUTh), Center for Interdisciplinary Research and Innovation-Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Dimitrios Christofilos
- School of Chemical Engineering & Physics Laboratory, Faculty of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence:
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Straub H, Zuber F, Eberl L, Maniura-Weber K, Ren Q. In Situ Investigation of Pseudomonas aeruginosa Biofilm Development: Interplay between Flow, Growth Medium, and Mechanical Properties of Substrate. ACS Appl Mater Interfaces 2023; 15:2781-2791. [PMID: 36601891 DOI: 10.1021/acsami.2c20693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To better understand the impact of biomaterial mechanical properties and growth medium on bacterial adhesion and biofilm formation under flow, we investigated the biofilm formation ability of Pseudomonas aeruginosa in different media on polydimethylsiloxane (PDMS) of different stiffness in real time using a microfluidic platform. P. aeruginosa colonization was recorded with optical microscopy and automated image analysis. The bacterial intracellular level of cyclic diguanylate (c-di-GMP), which regulates biofilm formation, was monitored using the transcription of the putative adhesin gene (cdrA) as a proxy. Contrary to the previous supposition, we revealed that PDMS material stiffness within the tested range has negligible impact on biofilm development and biofilm structures, whereas culture media not only influence the kinetics of biofilm development but also affect the biofilm morphology and structure dramatically. Interestingly, magnesium rather than previously reported calcium was identified here to play a decisive role in the formation of dense P. aeruginosa aggregates and high levels of c-di-GMP. These results demonstrate that although short-term adhesion assays bring valuable insight into bacterial and material interactions, long-term evaluations are essential to better predict overall biofilm outcome. The microfluidic system developed here presents a valuable application potential for studying biofilm development in situ. .
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Affiliation(s)
- Hervé Straub
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
- Department of Plant and Microbial Biology, University of Zürich, Zürich CH-8008, Switzerland
| | - Flavia Zuber
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
| | - Leo Eberl
- Department of Plant and Microbial Biology, University of Zürich, Zürich CH-8008, Switzerland
| | - Katharina Maniura-Weber
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen CH-9014, Switzerland
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10
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Ferreira Santos MS, Zamuruyev K, Mora MF, Noell AC, Willis PA. A hydrodynamic injection approach for capillary electrophoresis using rotor-stator valves. Electrophoresis 2023; 44:784-792. [PMID: 36640139 DOI: 10.1002/elps.202200260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/09/2022] [Accepted: 01/04/2023] [Indexed: 01/15/2023]
Abstract
Sample injection is a critical step in a capillary electrophoresis (CE) analysis. Electrokinetic injection is the simplest approach and is often selected for implementation in portable CE instruments. However, in order to minimize the effect of sample matrix upon the results of a CE analysis, hydrodynamic injection is preferred. Although portable CE instruments with hydrodynamic injection have been reported, injection has always been performed at the grounded end of the capillary. This simplifies fluidic handling but limits coupling with electrochemical detectors and electrospray ionization-mass spectrometry (ESI-MS). We demonstrated previously that injection at the high-voltage (HV) end of the capillary could be performed using an HV-compatible rotary injection valve (fixed-volume injection). However, the mismatch between the bore sizes of the channels on the rotor-stator valve and the separation capillary caused peak tailing and undesired mixing, impairing analytical performance. In this work, we present an HV-compatible hydrodynamic injection approach that overcomes the issues associated with the fixed-volume injection approach reported previously. The performance of the CE instrument was demonstrated by analyzing a mixture of 13 amino acids by CE coupled to laser-induced fluorescence, which showed relative standard deviations for peak area and migration time below 5% and 1%, respectively, for triplicate analysis. Additionally, replicate measurements of a mixture of amino acids, peptides, nucleobases, and nucleosides by CE coupled to electrospray ionization-mass spectrometry (CE-ESI-MS) were performed to evaluate peak tailing, and results were similar to those obtained with a commercial CE-ESI-MS setup.
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Affiliation(s)
| | - Konstantin Zamuruyev
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Maria F Mora
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Aaron C Noell
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Peter A Willis
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
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11
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Ferreira Santos MS, Kurfman E, Zamuruyev K, Noell AC, Mora MF, Willis PA. A voltage trade study for the design of capillary electrophoresis instruments for spaceflight. Electrophoresis 2023; 44:10-14. [PMID: 35569140 DOI: 10.1002/elps.202200085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/29/2022] [Accepted: 05/06/2022] [Indexed: 02/01/2023]
Abstract
Capillary electrophoresis (CE) systems have undergone extensive development for spaceflight applications. A flight-compatible high voltage power supply and the necessary voltage isolation for other energized components can be large contributors to both the volume and mass of a CE system, especially if typical high voltage levels of 25-30 kV are used. Here, we took advantage of our custom CE hardware to perform a trade study for simultaneous optimization of capillary length, high voltage level, and separation time, without sacrificing method performance. A capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4 D) method recently developed by our group to target inorganic cations and amino acids relevant to astrobiology was used as a test case. The results indicate that a 50 cm long capillary with 15 kV applied voltage (half of that used in the original method) can be used to achieve measurement goals while minimizing instrument size.
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Affiliation(s)
| | - Emily Kurfman
- Department of Chemistry, University of Kansas, Lawrence, Kansas, USA
- Ralph N. Adams Institute for Bioanalytical Chemistry, University of Kansas, Lawrence, Kansas, USA
| | - Konstantin Zamuruyev
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Aaron C Noell
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Maria F Mora
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Peter A Willis
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
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12
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Toussaint SLD, Ponstein J, Thoury M, Métivier R, Kalthoff DC, Habermeyer B, Guilard R, Bock S, Mortensen P, Sandberg S, Gueriau P, Amson E. Fur glowing under ultraviolet: in situ analysis of porphyrin accumulation in the skin appendages of mammals. Integr Zool 2023; 18:15-26. [PMID: 35500584 DOI: 10.1111/1749-4877.12655] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Examples of photoluminescence (PL) are being reported with increasing frequency in a wide range of organisms from diverse ecosystems. However, the chemical basis of this PL remains poorly defined, and our understanding of its potential ecological function is still superficial. Among mammals, recent analyses have identified free-base porphyrins as the compounds responsible for the reddish ultraviolet-induced photoluminescence (UV-PL) observed in the pelage of springhares and hedgehogs. However, the localization of the pigments within the hair largely remains to be determined. Here, we use photoluminescence multispectral imaging emission and excitation spectroscopy to detect, map, and characterize porphyrinic compounds in skin appendages in situ. We also document new cases of mammalian UV-PL caused by free-base porphyrins in distantly related species. Spatial distribution of the UV-PL is strongly suggestive of an endogenous origin of the porphyrinic compounds. We argue that reddish UV-PL is predominantly observed in crepuscular and nocturnal mammals because porphyrins are photodegradable. Consequently, this phenomenon may not have a specific function in intra- or interspecific communication but rather represents a byproduct of potentially widespread physiological processes.
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Affiliation(s)
- Séverine L D Toussaint
- AG Vergleichende Zoologie, Institut für Biologie, Humboldt Universität zu Berlin, Berlin, Germany
| | - Jasper Ponstein
- Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany.,AG Paläobiologie und Evolution, Institut für Biologie, Humboldt Universität zu Berlin, Berlin, Germany
| | - Mathieu Thoury
- IPANEMA, CNRS, ministère de la Culture, UVSQ, MNHN, USR3461, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, France
| | - Daniela C Kalthoff
- Department of Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | | | - Roger Guilard
- ICMUB, UMR CNRS 6302, Université de Bourgogne Franche-Comté, France
| | - Steffen Bock
- Museum für Naturkunde Berlin, Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
| | - Peter Mortensen
- Department of Zoology, Swedish Museum of Natural History, Stockholm, Sweden
| | - Sverre Sandberg
- Norwegian Porphyria Centre (NAPOS), Haukeland University Hospital, Norwegian Organization for Quality Improvement of Laboratory Examinations (Noklus), and Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Norway
| | - Pierre Gueriau
- IPANEMA, CNRS, ministère de la Culture, UVSQ, MNHN, USR3461, Université Paris-Saclay, Gif-sur-Yvette, France.,Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
| | - Eli Amson
- Staatliches Museum für Naturkunde Stuttgart, Stuttgart, Germany
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13
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Zhu Q, Yan T, Yang Y, Song Y, Lu J, Luo Y, Xu LP, Xu T. Programmable Microparticle Array for In Situ Modification and Multiple miRNA Detection. ACS Sens 2022; 7:3654-3659. [PMID: 36448914 DOI: 10.1021/acssensors.2c02158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Simultaneous detection of multiple miRNAs of one disease can greatly reduce misdiagnosis and improve the detection rate, which is helpful for early cancer diagnosis. Here, a programmable microparticle-array-based acoustic microchip for in situ simultaneous multiple miRNAs detection is developed. On this microchip, the multiple probes-labeled microparticle array can be procedurally arranged in a microfluidic reaction chamber when four orthogonally piezoelectric transducers are applied. The probes-labeled microparticle array offers a platform for full molecular contact under dynamic ultrasonic streaming, and the array supplies a multipoint data correction to reduce the false positive of the detection results for more precisely visible fluorescence multiple target miRNAs sensing. We employed miRNA-21, miRNA-210, and miRNA-155 as specific biomarkers of pancreatic cancer and successfully finished the multiple miRNAs simultaneous detection in the microchip with a detection limit of 139.1, 179.9, and 111.4 pM, respectively. Such a device is programmable by adjusting the imputing frequency and voltage, and target biomarkers can be easily collected when the ultrasound force is released for further analysis, which shows great potential in multiple miRNAs enrichment and simultaneous detection for cancer clinical diagnosis.
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Affiliation(s)
- Qinglin Zhu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Tingxiu Yan
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Yuemeng Yang
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Yongchao Song
- Intelligent Wearable Engineering Research Center of Qingdao, Research Center for Intelligent and Wearable Technology, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao266071, People's Republic of China
| | - Jingwei Lu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Yong Luo
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Li-Ping Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China
| | - Tailin Xu
- Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing100083, People's Republic of China.,School of Biomedical Engineering, Shenzhen University, Shenzhen, Guangdong518060, People's Republic of China
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14
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Vogt DS, Schröder S, Richter L, Deiml M, Weßels P, Neumann J, Hübers HW. VOILA on the LUVMI-X Rover: Laser-Induced Breakdown Spectroscopy for the Detection of Volatiles at the Lunar South Pole. Sensors (Basel) 2022; 22:9518. [PMID: 36502218 PMCID: PMC9741173 DOI: 10.3390/s22239518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/25/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
The project Lunar Volatiles Mobile Instrumentation-Extended (LUVMI-X) developed an initial system design as well as payload and mobility breadboards for a small, lightweight rover dedicated for in situ exploration of the lunar south pole. One of the proposed payloads is the Volatiles Identification by Laser Analysis instrument (VOILA), which uses laser-induced breakdown spectroscopy (LIBS) to analyze the elemental composition of the lunar surface with an emphasis on sampling regolith and the detection of hydrogen for the inference of the presence of water. It is designed to analyze targets in front of the rover at variable focus between 300 mm and 500 mm. The spectrometer covers the wavelength range from 350 nm to 790 nm, which includes the hydrogen line at 656.3 nm as well as spectral lines of most major rock-forming elements. We report here the scientific input that fed into the concept and design of the VOILA instrument configuration for the LUVMI-X rover. Moreover, we present the measurements performed with the breadboard laboratory setup for VOILA at DLR Berlin that focused on verifying the performance of the designed LIBS instrument in particular for the detection and quantification of hydrogen and other major rock forming elements in the context of in situ lunar surface analysis.
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Affiliation(s)
- David S. Vogt
- Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Optische Sensorsysteme, 12489 Berlin, Germany
| | - Susanne Schröder
- Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Optische Sensorsysteme, 12489 Berlin, Germany
| | - Lutz Richter
- OHB System AG, 82234 Weßling, Germany
- Large Space Structures GmbH, 85386 Eching, Germany
| | | | - Peter Weßels
- Laser Zentrum Hannover e.V. (LZH), 30419 Hannover, Germany
| | - Jörg Neumann
- Laser Zentrum Hannover e.V. (LZH), 30419 Hannover, Germany
| | - Heinz-Wilhelm Hübers
- Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Institut für Optische Sensorsysteme, 12489 Berlin, Germany
- Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
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15
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Li M, Xiong C, Ma Y, Jiang H. Study on Crystallization Process of Li 2O-Al 2O 3-SiO 2 Glass-Ceramics Based on In Situ Analysis. Materials (Basel) 2022; 15:8006. [PMID: 36431492 PMCID: PMC9698697 DOI: 10.3390/ma15228006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
In this paper, we used differential scanning calorimetry (DSC), high-temperature X-ray diffraction (HT-XRD), and confocal scanning laser microscopy (CSLM) to investigate the Li2O-Al2O3-SiO2 glass crystallization process. At 943 K, lithium disilicate (Li2Si2O5) phase crystals began to precipitate in the Li2O-Al2O3-SiO2 glass with a crystal size of 50-70 nm. At the temperature of 1009 K, petalite (LiAlSi4O10) crystals began to precipitate in the vitreous phase, forming composite spherical crystals of LiAlSi4O10 and Li2Si2O5 with size in the range of 90-130 nm. Furthermore, the Kissinger method and KAS method of the JMAK model were used to calculate the crystallization activation energy and the Avrami index "n". It was found that the precipitation mechanism of the two kinds of crystals is whole crystallization; accordingly, the selection of crystallization heat treatment system was guided to determine the nucleation and crystallization temperature.
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Affiliation(s)
- Minghan Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Laboratory of Hainan Province, Hainan University, Haikou 570228, China
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, Haikou 570228, China
| | - Chunrong Xiong
- State Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Laboratory of Hainan Province, Hainan University, Haikou 570228, China
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, Haikou 570228, China
| | - Yanping Ma
- State Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Laboratory of Hainan Province, Hainan University, Haikou 570228, China
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, Haikou 570228, China
| | - Hong Jiang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Special Glass Key Laboratory of Hainan Province, Hainan University, Haikou 570228, China
- Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, Haikou 570228, China
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16
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Jin X, Jang H, Jarulertwathana N, Kim MG, Hwang SJ. Atomically Thin Holey Two-Dimensional Ru 2P Nanosheets for Enhanced Hydrogen Evolution Electrocatalysis. ACS Nano 2022; 16:16452-16461. [PMID: 36153986 DOI: 10.1021/acsnano.2c05691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The defect engineering of low-dimensional nanostructured materials has led to increased scientific efforts owing to their high efficiency concerning high-performance electrocatalysts that play a crucial role in renewable energy technologies. Herein, we report an efficient methodology for fabricating atomically thin, holey metal-phosphide nanosheets with excellent electrocatalyst functionality. Two-dimensional, subnanometer-thick, holey Ru2P nanosheets containing crystal defects were synthesized via the phosphidation of monolayer RuO2 nanosheets. Holey Ru2P nanosheets exhibited superior electrocatalytic activity for the hydrogen evolution reaction (HER) compared to that exhibited by nonholey Ru2P nanoparticles. Further, holey Ru2P nanosheets exhibited overpotentials of 17 and 26 mV in acidic and alkaline electrolytes, respectively. Thus, they are among the best-performing Ru-P-based HER catalysts reported to date. In situ spectroscopic investigations indicated that the holey nanosheet morphology enhanced the accumulation of surface hydrogen through the adsorption of protons and/or water, resulting in an increased contribution of the Volmer-Tafel mechanism toward the exceptional HER activity of these ultrathin electrocatalysts.
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Affiliation(s)
- Xiaoyan Jin
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Haeseong Jang
- PLS-II Beamline Division, PLS-II Department, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | | | - Min Gyu Kim
- PLS-II Beamline Division, PLS-II Department, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Seong-Ju Hwang
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
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17
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Grabb KC, Pardis WA, Kapit J, Wankel SD, Hayden EB, Hansel CM. Design Optimization of a Submersible Chemiluminescent Sensor (DISCO) for Improved Quantification of Reactive Oxygen Species (ROS) in Surface Waters. Sensors (Basel) 2022; 22:6683. [PMID: 36081142 PMCID: PMC9460491 DOI: 10.3390/s22176683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Reactive oxygen species (ROS) are key drivers of biogeochemical cycling while also exhibiting both positive and negative effects on marine ecosystem health. However, quantification of the ROS superoxide (O2-) within environmental systems is hindered by its short half-life. Recently, the development of the diver-operated submersible chemiluminescent sensor (DISCO), a submersible, handheld instrument, enabled in situ superoxide measurements in real time within shallow coral reef ecosystems. Here, we present a redesigned and improved instrument, DISCO II. Similar to the previous DISCO, DISCO II is a self-contained, submersible sensor, deployable to 30 m depth and capable of measuring reactive intermediate species in real time. DISCO II is smaller, lighter, lower cost, and more robust than its predecessor. Laboratory validation of DISCO II demonstrated an average limit of detection in natural seawater of 133.1 pM and a percent variance of 0.7%, with stable photo multiplier tube (PMT) counts, internal temperature, and flow rates. DISCO II can also be optimized for diverse environmental conditions by adjustment of the PMT supply voltage and integration time. Field tests showed no drift in the data with a percent variance of 3.0%. Wand tip adaptations allow for in situ calibrations and decay rates of superoxide using a chemical source of superoxide (SOTS-1). Overall, DISCO II is a versatile, user-friendly sensor that enables measurements in diverse environments, thereby improving our understanding of the cycling of reactive intermediates, such as ROS, across various marine ecosystems.
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Affiliation(s)
- Kalina C. Grabb
- MIT-WHOI Joint Program in Oceanography, Cambridge, MA 02139, USA
- Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA 02543, USA
| | - William A. Pardis
- Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA 02543, USA
| | - Jason Kapit
- Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA 02543, USA
| | - Scott D. Wankel
- Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA 02543, USA
| | - Eric B. Hayden
- Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA 02543, USA
| | - Colleen M. Hansel
- Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA 02543, USA
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18
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Muller A, Mecheri H, Corbeil P, Plamondon A, Robert-Lachaine X. Inertial Motion Capture-Based Estimation of L5/S1 Moments during Manual Materials Handling. Sensors (Basel) 2022; 22:s22176454. [PMID: 36080913 PMCID: PMC9459798 DOI: 10.3390/s22176454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/12/2022] [Accepted: 08/24/2022] [Indexed: 05/27/2023]
Abstract
Inertial motion capture (IMC) has gained popularity in conducting ergonomic studies in the workplace. Because of the need to measure contact forces, most of these in situ studies are limited to a kinematic analysis, such as posture or working technique analysis. This paper aims to develop and evaluate an IMC-based approach to estimate back loading during manual material handling (MMH) tasks. During various representative workplace MMH tasks performed by nine participants, this approach was evaluated by comparing the results with the ones computed from optical motion capture and a large force platform. Root mean square errors of 21 Nm and 15 Nm were obtained for flexion and asymmetric L5/S1 moments, respectively. Excellent correlations were found between both computations on indicators based on L5/S1 peak and cumulative flexion moments, while lower correlations were found on indicators based on asymmetric moments. Since no force measurement or load kinematics measurement is needed, this study shows the potential of using only the handler's kinematics measured by IMC to estimate kinetics variables. The assessment of workplace physical exposure, including L5/S1 moments, will allow more complete ergonomics evaluation and will improve the ecological validity compared to laboratory studies, where the situations are often simplified and standardized.
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Affiliation(s)
- Antoine Muller
- Univ Lyon, Univ Gustave Eiffel, Univ Claude Bernard Lyon 1, LBMC UMR_T 9406, F-69622 Lyon, France
| | - Hakim Mecheri
- Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail (IRSST), Montreal, QC H3A 3C2, Canada
| | - Philippe Corbeil
- Department of Kinesiology, Université Laval, Québec, QC G1V 0A6, Canada
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale du Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIRRIS/CIUSSS-CN), Québec, QC G1C 3S2, Canada
| | - André Plamondon
- Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail (IRSST), Montreal, QC H3A 3C2, Canada
| | - Xavier Robert-Lachaine
- Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail (IRSST), Montreal, QC H3A 3C2, Canada
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19
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Brendle SA, Li J, Cladel NM, Balogh KK, Booth J, Shearer DA, Walter V, Lu S, Christensen ND, Covington D, DeBroff J, Milici J, Zhu Y, Viscidi R, Hu J. Passive Immunization with a Single Monoclonal Neutralizing Antibody Protects against Cutaneous and Mucosal Mouse Papillomavirus Infections. J Virol 2022; 96:e0070322. [PMID: 35920658 DOI: 10.1128/jvi.00703-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We have established a mouse papillomavirus (MmuPV1) model that induces both cutaneous and mucosal infections and cancers. In the current study, we use this model to test our hypothesis that passive immunization using a single neutralizing monoclonal antibody can protect both cutaneous and mucosal sites at different time points after viral inoculation. We conducted a series of experiments involving the administration of either a neutralizing monoclonal antibody, MPV.A4, or control monoclonal antibodies to both outbred and inbred athymic mice. Three clinically relevant mucosal sites (lower genital tract for females and anus and tongue for both males and females) and two cutaneous sites (muzzle and tail) were tested. At the termination of the experiments, all tested tissues were harvested for virological analyses. Significantly lower levels of viral signals were detected in the MPV.A4-treated female mice up to 6 h post-viral inoculation compared to those in the isotype control. Interestingly, males displayed partial protection when they received MPV.A4 at the time of viral inoculation, even though they were completely protected when receiving MPV.A4 at 24 h before viral inoculation. We detected MPV.A4 in the blood starting at 1 h and up to 8 weeks postadministration in some mice. Parallel to these in vivo studies, we conducted in vitro neutralization using a mouse keratinocyte cell line and observed complete neutralization up to 8 h post-viral inoculation. Thus, passive immunization with a monoclonal neutralizing antibody can protect against papillomavirus infection at both cutaneous and mucosal sites and is time dependent. IMPORTANCE This is the first study testing a single monoclonal neutralizing antibody (MPV.A4) by passive immunization against papillomavirus infections at both cutaneous and mucosal sites in the same host in the mouse papillomavirus model. We demonstrated that MPV.A4 administered before viral inoculation can protect both male and female athymic mice against MmuPV1 infections at cutaneous and mucosal sites. MPV.A4 also offers partial protection at 6 h post-viral inoculation in female mice. MPV.A4 can be detected in the blood from 1 h to 8 weeks after intraperitoneal (i.p.) injection. Interestingly, males were only partially protected when they received MPV.A4 at the time of viral inoculation. The failed protection in males was due to the absence of neutralizing MPV.A4 at the infected sites. Our findings suggest passive immunization with a single monoclonal neutralizing antibody can protect against diverse papillomavirus infections in a time-dependent manner in mice.
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20
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Mora MF, Kok MGM, Noell A, Willis PA. Detection of Biosignatures by Capillary Electrophoresis Mass Spectrometry in the Presence of Salts Relevant to Ocean Worlds Missions. Astrobiology 2022; 22:914-925. [PMID: 35913998 DOI: 10.1089/ast.2021.0091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Capillary electrophoresis (CE) is a promising liquid-based technique for in situ chemical analysis on ocean worlds that allows the detection of a wide range of organic molecules relevant to the search for life. CE coupled with mass spectrometry (MS) is particularly valuable as it also enables the discovery of unknown compounds. Here we demonstrate that CE coupled to MS via electrospray ionization (ESI) can readily analyze samples containing up to half the saturation levels of salts relevant to ocean worlds when using 5 M acetic acid as the separation media. A mixture containing amino acids, peptides, nucleobases, and nucleosides was analyzed in the presence of two salts, NaCl and MgSO4, based on their relevance to Europa and Enceladus. We demonstrate here CE-MS limits of detection for these organics ranging from 0.05 to 1 μM (8 to 89 ppb) in the absence of salts. More importantly, we demonstrate here for the first time that organics in the low micromolar range (1-50 μM) are detected by CE-MS in the presence of 3 M NaCl without desalting, preconcentration, or derivatization. This demonstration highlights how CE-MS is uniquely suited for organic analysis on future missions to ocean worlds.
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Affiliation(s)
- Maria F Mora
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Miranda G M Kok
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Aaron Noell
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Peter A Willis
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
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21
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Jin X, Lee T, Tamakloe W, Patil SB, Soon A, Kang Y, Hwang S. In Situ Defect Engineering Route to Optimize the Cationic Redox Activity of Layered Double Hydroxide Nanosheet via Strong Electronic Coupling with Holey Substrate. Adv Sci (Weinh) 2022; 9:e2103368. [PMID: 34713617 PMCID: PMC8728845 DOI: 10.1002/advs.202103368] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/15/2021] [Indexed: 06/13/2023]
Abstract
A defect engineering of inorganic solids garners great deal of research activities because of its high efficacy to optimize diverse energy-related functionalities of nanostructured materials. In this study, a novel in situ defect engineering route to maximize electrocatalytic redox activity of inorganic nanosheet is developed by using holey nanostructured substrate with strong interfacial electronic coupling. Density functional theory calculations and in situ spectroscopic analyses confirm that efficient interfacial charge transfer takes place between holey TiN and Ni-Fe-layered double hydroxide (LDH), leading to the feedback formation of nitrogen vacancies and a maximization of cation redox activity. The holey TiN-LDH nanohybrid is found to exhibit a superior functionality as an oxygen electrocatalyst and electrode for Li-O2 batteries compared to its non-holey homologues. The great impact of hybridization-driven vacancy introduction on the electrochemical performance originates from an efficient electrochemical activation of both Fe and Ni ions during electrocatalytic process, a reinforcement of interfacial electronic coupling, an increase in electrochemical active sites, and an improvement in electrocatalysis/charge-transfer kinetics.
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Affiliation(s)
- Xiaoyan Jin
- Department of Materials Science and EngineeringCollege of EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Taehun Lee
- Center for Artificial Synesthesia Materials DiscoveryDepartment of Materials Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Wilson Tamakloe
- Department of Materials Science and EngineeringKorea UniversitySeoul02841Republic of Korea
| | - Sharad B. Patil
- Department of Chemistry and NanoscienceCollege of Natural SciencesEwha Womans UniversitySeoul03760Republic of Korea
| | - Aloysius Soon
- Center for Artificial Synesthesia Materials DiscoveryDepartment of Materials Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Yong‐Mook Kang
- Department of Materials Science and EngineeringKorea UniversitySeoul02841Republic of Korea
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Seong‐Ju Hwang
- Department of Materials Science and EngineeringCollege of EngineeringYonsei UniversitySeoul03722Republic of Korea
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22
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Elderderi S, Wils L, Leman-Loubière C, Byrne HJ, Chourpa I, Enguehard-Gueiffier C, Munnier E, Elbashir AA, Boudesocque-Delaye L, Bonnier F. In Situ Water Quantification in Natural Deep Eutectic Solvents Using Portable Raman Spectroscopy. Molecules 2021; 26:molecules26185488. [PMID: 34576961 PMCID: PMC8471915 DOI: 10.3390/molecules26185488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/01/2021] [Accepted: 09/06/2021] [Indexed: 11/21/2022] Open
Abstract
Raman spectroscopy is a label-free, non-destructive, non-invasive analytical tool that provides insight into the molecular composition of samples with minimum or no sample preparation. The increased availability of commercial portable Raman devices presents a potentially easy and convenient analytical solution for day-to-day analysis in laboratories and production lines. However, their performance for highly specific and sensitive analysis applications has not been extensively evaluated. This study performs a direct comparison of such a commercially available, portable Raman system, with a research grade Raman microscope system for the analysis of water content of Natural Deep Eutectic Solvents (NADES). NADES are renewable, biodegradable and easily tunable “green” solvents, outcompeting existing organic solvents for applications in extraction from biomass, biocatalysis, and nanoparticle synthesis. Water content in NADES is, however, a critical parameter, affecting their properties, optimal use and extraction efficiency. In the present study, portable Raman spectroscopy coupled with Partial Least Squares Regression (PLSR) is investigated for rapid determination of water content in NADES samples in situ, i.e., directly in glassware. Three NADES systems, namely Betaine Glycerol (BG), Choline Chloride Glycerol (CCG) and Glucose Glycerol (GG), containing a range of water concentrations between 0% (w/w) and 28.5% (w/w), were studied. The results are directly compared with previously published studies of the same systems, using a research grade Raman microscope. PLSR results demonstrate the reliability of the analysis, surrendering R2 values above 0.99. Root Mean Square Errors Prediction (RMSEP) of 0.6805%, 0.9859% and 1.2907% w/w were found for respectively unknown CCG, BG and GG samples using the portable device compared to 0.4715%, 0.3437% and 0.7409% w/w previously obtained by analysis in quartz cuvettes with a Raman confocal microscope. Despite the relatively higher values of RMSEP observed, the comparison of the percentage of relative errors in the predicted concentration highlights that, overall, the portable device delivers accuracy below 5%. Ultimately, it has been demonstrated that portable Raman spectroscopy enables accurate quantification of water in NADES directly through glass vials without the requirement for sample withdrawal. Such compact instruments provide solvent and consumable free analysis for rapid analysis directly in laboratories and for non-expert users. Portable Raman is a promising approach for high throughput monitoring of water content in NADES that can support the development of new analytical protocols in the field of green chemistry in research and development laboratories but also in the industry as a routine quality control tool.
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Affiliation(s)
- Suha Elderderi
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37200 Tours, France; (S.E.); (I.C.); (E.M.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Gezira, P.O. Box 20, Wad Madani 21111, Sudan
| | - Laura Wils
- EA 7502 Synthèse et Isolement de Molécules BioActives (SIMBA), Université de Tours, 31 Avenue Monge, 37200 Tours, France; (L.W.); (C.L.-L.); (C.E.-G.); (L.B.-D.)
| | - Charlotte Leman-Loubière
- EA 7502 Synthèse et Isolement de Molécules BioActives (SIMBA), Université de Tours, 31 Avenue Monge, 37200 Tours, France; (L.W.); (C.L.-L.); (C.E.-G.); (L.B.-D.)
| | - Hugh J. Byrne
- FOCAS Research Institute, TU Dublin-City Campus, Dublin 8, Ireland;
| | - Igor Chourpa
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37200 Tours, France; (S.E.); (I.C.); (E.M.)
| | - Cécile Enguehard-Gueiffier
- EA 7502 Synthèse et Isolement de Molécules BioActives (SIMBA), Université de Tours, 31 Avenue Monge, 37200 Tours, France; (L.W.); (C.L.-L.); (C.E.-G.); (L.B.-D.)
| | - Emilie Munnier
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37200 Tours, France; (S.E.); (I.C.); (E.M.)
| | - Abdalla A. Elbashir
- Department of Chemistry, Faculty of Science, University of Khartoum, P.O. Box 321, Khartoum 11115, Sudan;
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia
| | - Leslie Boudesocque-Delaye
- EA 7502 Synthèse et Isolement de Molécules BioActives (SIMBA), Université de Tours, 31 Avenue Monge, 37200 Tours, France; (L.W.); (C.L.-L.); (C.E.-G.); (L.B.-D.)
| | - Franck Bonnier
- EA 6295 Nanomédicaments et Nanosondes, Faculté de Pharmacie, Université de Tours, 31 Avenue Monge, 37200 Tours, France; (S.E.); (I.C.); (E.M.)
- Correspondence:
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Chang W, Qu J, Li W, Liu YH, Zhai XZ, Liu HJ, Kang Y, Yu ZZ. Mesoporous Yolk-Shell Structured Organosulfur Nanotubes with Abundant Internal Joints for High-Performance Lithium-Sulfur Batteries by Kinetics Acceleration. Small 2021; 17:e2101857. [PMID: 34350696 DOI: 10.1002/smll.202101857] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/09/2021] [Indexed: 06/13/2023]
Abstract
Although organosulfur compounds can protect lithium anodes, participate in the redox reaction, and suppress the shuttle effect, the sluggish electrochemical dynamics of their bulk structure and the notorious shuttle effect of covalent long-chain sulfurs largely impede their actual applications. Herein, sulfurized carbon nanotube@aminophenol-formaldehyde (SC@A) with covalently linked short-chain sulfurs is firstly synthesized by in situ polymerization of aminophenol-formaldehyde (AF) on the surface of carbon nanotubes (CNTs) followed by acetone etching and inverse sulfurization processes, forming mesoporous yolk-shell organosulfur nanotubes with abundant internal joints between the yolk of CNTs and the shell of sulfurized AF for the first time. In situ Raman spectra, in situ XRD patterns, and ex situ XPS spectra verify that the covalent short-chain sulfurs bring about a reversible solid-solid conversion process of sulfur, thoroughly avoiding the shuttle effect. The mesoporous yolk-shell structure with abundant internal joints can effectively accommodate the volume change, fully expose active sites and efficiently improve the transport of electrons and lithium ions, thus highly promoting the solid-solid electrochemical reaction kinetics. Therefore, the SC@A cathode exhibits a superior specific capacity of 841 mAh g-1 and a capacity decay of 0.06% per cycle within 500 cycles at a large current density of 5.0 C.
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Affiliation(s)
- Wei Chang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jin Qu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wei Li
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yu-Hao Liu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xian-Zhi Zhai
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Hong-Jun Liu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yu Kang
- Analysis and Test Center, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
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24
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Pham T, Nazaroff CD, Labaer J, Guo J. Ultrasensitive and Multiplexed Protein Imaging with Cleavable Fluorescent Tyramide and Antibody Stripping. Int J Mol Sci 2021; 22:8644. [PMID: 34445351 DOI: 10.3390/ijms22168644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/07/2021] [Accepted: 08/08/2021] [Indexed: 11/16/2022] Open
Abstract
Multiplexed single-cell analysis of proteins in their native cellular contexts holds great promise to reveal the composition, interaction and function of the distinct cell types in complex biological systems. However, the existing multiplexed protein imaging technologies are limited by their detection sensitivity or technical demands. To address these issues, here, we develop an ultrasensitive and multiplexed in situ protein profiling approach by reiterative staining with off-the-shelf antibodies and cleavable fluorescent tyramide (CFT). In each cycle of this approach, the protein targets are recognized by antibodies labeled with horseradish peroxidase, which catalyze the covalent deposition of CFT on or close to the protein targets. After imaging, the fluorophores are chemically cleaved, and the antibodies are stripped. Through continuous cycles of staining, imaging, fluorophore cleavage and antibody stripping, a large number of proteins can be quantified in individual cells in situ. Applying this method, we analyzed 20 different proteins in each of ~67,000 cells in a human formalin-fixed paraffin-embedded (FFPE) tonsil tissue. Based on their unique protein expression profiles and microenvironment, these individual cells are partitioned into different cell clusters. We also explored the cell-cell interactions in the tissue by examining which specific cell clusters are selectively associating or avoiding each other.
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25
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Angelin EM, de Sá SF, Soares I, Callapez ME, Ferreira JL, Melo MJ, Bacci M, Picollo M. Application of Infrared Reflectance Spectroscopy on Plastics in Cultural Heritage Collections: A Comparative Assessment of Two Portable Mid-Fourier Transform Infrared Reflection Devices. Appl Spectrosc 2021; 75:818-833. [PMID: 33599540 DOI: 10.1177/0003702821998777] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plastics have been increasingly used to create modern and contemporary art and design, and nowadays, museum collections hold numerous objects completely or partially made of plastics. However, the preservation of these materials is still a challenging task in heritage conservation, especially because some plastics show signs of degradation shortly after their production. In addition, different degradation mechanisms can often take place depending on the plastic composition and appropriate environmental and packaging conditions should be adopted. Therefore, methods for in situ and rapid characterization of plastic artifacts' composition are greatly needed to outline proper conservation strategies. Infrared (IR) spectroscopy, such as attenuated total reflection Fourier transform infrared spectroscopy (ATR FT-IR), is a well-established method for polymeric material analysis. However, ATR FT-IR requires an intimate contact with the object, which makes its application less appropriate for the in situ investigation of fragile or brittle degraded plastic objects. Mid-FT-IR reflectance spectroscopy may represent a valid alternative as it allows in situ measurements with minimum or even no contact, and IR data can be acquired rapidly. On the other hand, spectral interpretation of reflectance spectra is usually difficult as IR bands may appear distorted with significant changes in band maximum, shape, and relative intensity, depending on the optical properties and surface texture of the material analyzed. Presently, mid-FT-IR reflection devices working in external reflection (ER FT-IR) and diffuse reflection infrared Fourier transform spectroscopy (DRIFTS) modes have been used in cultural heritage research studies. As the collected vibrational information depends on the optical layout of the measuring system, differences between ER FT-IR and DRIFT spectra are thus expected when the same polymer is analyzed. So far, ER FT-IR and DRIFT spectroscopy have been individually explored for the identification of plastic objects, but comparative studies between the application of two reflectance FT-IR modes have not been presented yet. In this work, the use of two portable FT-IR spectrometers equipped with ER FT-IR and DRIFTS modes were compared for plastics identification purposes for the first time. Both references of polymeric materials and historical plastic objects (from a Portuguese private collection) were studied and the differences between ER FT-IR and DRIFT spectra were discussed. The spectra features were examined considering the two different optical geometries and analytes' properties. This new insight can support a better understanding of both vibrational information acquired and practical aspects in the application of the ER FT-IR and DRIFTS in plastic analysis.
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Affiliation(s)
- Eva Mariasole Angelin
- Department of Conservation and Restoration and LAQV-REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Susana França de Sá
- Department of Conservation and Restoration and LAQV-REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Inês Soares
- Department of Conservation and Restoration and LAQV-REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Maria Elvira Callapez
- Centro Interuniversitário de História das Ciências e da Tecnologia, Universidade de Lisboa, Lisboa, Portugal
| | - Joana Lia Ferreira
- Department of Conservation and Restoration and LAQV-REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Maria João Melo
- Department of Conservation and Restoration and LAQV-REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Mauro Bacci
- "Nello Carrara" Institute of Applied Physics of the Italian National Research Council (IFAC-CNR), Sesto Fiorentino, Italy
| | - Marcello Picollo
- "Nello Carrara" Institute of Applied Physics of the Italian National Research Council (IFAC-CNR), Sesto Fiorentino, Italy
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26
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Ulitzsch S, Bäuerle T, Stefanakis M, Brecht M, Chassé T, Lorenz G, Kandelbauer A. Synthesis of an Addition-Crosslinkable, Silicon-Modified Polyolefin via Reactive Extrusion Monitored by In-Line Raman Spectroscopy. Polymers (Basel) 2021; 13:1246. [PMID: 33921316 DOI: 10.3390/polym13081246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 04/06/2021] [Indexed: 11/30/2022] Open
Abstract
We present the modification of ethylene-propylene rubber (EPM) with vinyltetra-methydisiloxane (VTMDS) via reactive extrusion to create a new silicone-based material with the potential for high-performance applications in the automotive, industrial and biomedical sectors. The radical-initiated modification is achieved with a peroxide catalyst starting the grafting reaction. The preparation process of the VTMDS-grafted EPM was systematically investigated using process analytical technology (in-line Raman spectroscopy) and the statistical design of experiments (DoE). By applying an orthogonal factorial array based on a face-centered central composite experimental design, the identification, quantification and mathematical modeling of the effects of the process factors on the grafting result were undertaken. Based on response surface models, process windows were defined that yield high grafting degrees and good grafting efficiency in terms of grafting agent utilization. To control the grafting process in terms of grafting degree and grafting efficiency, the chemical changes taking place during the modification procedure in the extruder were observed in real-time using a spectroscopic in-line Raman probe which was directly inserted into the extruder. Successful grafting of the EPM was validated in the final product by 1H-NMR and FTIR spectroscopy.
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27
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Mu HY, Ou YC, Chuang HN, Lu TJ, Jhan PP, Hsiao TH, Huang JH. Triple Selection Strategy for In Situ Labeling of Circulating Tumor Cells with High Purity and Viability toward Preclinical Personalized Drug Sensitivity Analysis. ACTA ACUST UNITED AC 2020; 4:e2000013. [PMID: 32529799 DOI: 10.1002/adbi.202000013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/27/2020] [Accepted: 03/16/2020] [Indexed: 12/13/2022]
Abstract
Ex vivo culture of viable circulating tumor cells (CTCs) from individual patients has recently become an emerging liquid biopsy technology to investigate drug sensitivity and genomic analysis in cancer. However, it remains challenging to retrieve the CTCs with high viability and purity from cancer patients' blood using a rapid process. Here, a triple selection strategy that combines immunonegative enrichment, density gradient, and microfluidic-based size-exclusion methods is developed for in situ drug sensitivity testing. The CTC isolation chip consists of 4 independent microchannels that can evenly distribute the captured CTCs, allowing for independent in situ analysis event. The cancer cells are retrieved within 5 min with high viability (>95%), captured efficiency (78%), and high purity (99%) from 7.5 mL of blood cell mixed samples. Furthermore, the CTCs can be isolated from prostate cancer patients' blood samples and verified in situ using cancer-specific markers within 1.5 h, demonstrating the possibility to be applied to clinical practice. In situ drug sensitivity analysis demonstrates that the captured CTCs without and with cisplatin treatment for 1 day have survival rates of 87.5% and 0%, respectively. It is envisioned that this strategy may become a potential tool to identify suitable therapies prior to the treatment.
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Affiliation(s)
- Hsuan-Yo Mu
- Department of Chemical Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu, 30013, Taiwan
| | - Yen-Chuan Ou
- Department of Urology, Taichung Veterans General Hospital, Taichung, 40705, Taiwan.,Department of Surgery, Tungs' Taichung Metroharbor Hospital, Taichung, 43304, Taiwan
| | - Han-Ni Chuang
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, 40705, Taiwan
| | - Tsai-Jung Lu
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, 40705, Taiwan
| | - Pei-Pei Jhan
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, 40705, Taiwan
| | - Tzu-Hung Hsiao
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, 40705, Taiwan.,Department of Public Health, Fu Jen Catholic University, New Taipei City, 24205, Taiwan.,Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Jen-Huang Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu, 30013, Taiwan
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28
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Fedick PW, Pu F, Morato NM, Cooks RG. Identification and Confirmation of Fentanyls on Paper using Portable Surface Enhanced Raman Spectroscopy and Paper Spray Ionization Mass Spectrometry. J Am Soc Mass Spectrom 2020; 31:735-741. [PMID: 32126777 DOI: 10.1021/jasms.0c00004] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Fentanyl and its analogues play a major role in the current opioid epidemic. In particular, these highly potent opioids have become a health hazard due to their use as additives in street drugs. Consequently, rapid on-site procedures for the analysis of this class of seized drugs are needed, especially considering the reported backlog of drug samples, which must undergo identification and confirmation tests to validate the presence of an illicit substance. Paper based devices are cheap sampling and analysis vehicles that have been shown capable of allowing rapid identification and confirmation of drugs of abuse. Modifying paper substrates by imprinting nanoparticles enables surface enhanced Raman spectroscopy (SERS) as well as a second analysis from the same substrate, namely paper spray ionization mass spectrometry. While such a procedure has been described for laboratory use, these illicit drug samples are typically collected in the field and this is where testing should be done. We combine paper SERS and paper spray MS on field-portable and commercial off-the-shelf (COTS) devices for the rapid and low-cost identification and confirmation of fentanyl and its analogues, enabling in situ analysis at the point of seizure of suspect samples. The commercial nature of both instruments moves this technology from the academic realm to a setting where the criminal justice system can realistically utilize it. The capabilities of this single-substrate dual-analyzer technique are further examined by sampling a variety of surfaces of forensic interest.
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Affiliation(s)
- Patrick W Fedick
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Research Department, Chemistry Division, United States Navy-Naval Air Systems Command (NAVAIR), Naval Air Warfare Center, Weapons Division (NAWCWD), China Lake, California 93555, United States
| | - Fan Pu
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Nicolás M Morato
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - R Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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29
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Tanaka R, Hattori Y, Otsuka M, Ashizawa K. Application of spray freeze drying to theophylline-oxalic acid cocrystal engineering for inhaled dry powder technology. Drug Dev Ind Pharm 2020; 46:179-187. [PMID: 31937148 DOI: 10.1080/03639045.2020.1716367] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Spray freeze drying (SFD) produces suitable particles for the pharmaceutical formulation of dry powders used in dry powder inhalers (DPIs). However, SFD particles have large specific surface area and are partially made up of amorphous solids; this state is hygroscopic and would lead to changes in physicochemical properties by humidity when the particles are stored over the long-term or under high humidity conditions such as in the lungs. This study focused on the application of SFD with a cocrystal technique which can add humidity resistance to the active pharmaceutical ingredients (APIs), and the investigation of the physicochemical properties under high humidity conditions. Cocrystal samples containing theophylline anhydrate (THA) and oxalic acid (OXA) in a molar ratio of 2:1 were prepared by SFD. The crystalline structure, thermal behavior, solid-state, hygroscopicity, stability, and aerodynamic properties were evaluated. Simultaneous in situ measurement by near-infrared and Raman (NIR-Raman) spectroscopy was performed to analyze the humidification process. The SFD sample had a porous particle and an optimal aerodynamic particle size (3.03 µm) although the geometric particle diameter was 7.20 µm. In addition, the sample formed the THAOXA cocrystal with partial coamorphous. The hydration capacity and pseudopolymorphic transformation rate of the SFD sample were much lower than those of THA under conditions of 96.4% relative humidity and 40.0°C temperature because of the cocrystal formation. The reasons were discussed based on the crystalline structure and energy. The SFD technology for cocrystallization would enable the pharmaceutical preparation of DPI products under environmentally friendly conditions.
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Affiliation(s)
- Ryoma Tanaka
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - Yusuke Hattori
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Makoto Otsuka
- Graduate School of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Kazuhide Ashizawa
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
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30
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Burton AS, Stahl SE, John KK, Jain M, Juul S, Turner DJ, Harrington ED, Stoddart D, Paten B, Akeson M, Castro-Wallace SL. Off Earth Identification of Bacterial Populations Using 16S rDNA Nanopore Sequencing. Genes (Basel) 2020; 11:E76. [PMID: 31936690 DOI: 10.3390/genes11010076] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/20/2019] [Accepted: 01/07/2020] [Indexed: 01/09/2023] Open
Abstract
The MinION sequencer has made in situ sequencing feasible in remote locations. Following our initial demonstration of its high performance off planet with Earth-prepared samples, we developed and tested an end-to-end, sample-to-sequencer process that could be conducted entirely aboard the International Space Station (ISS). Initial experiments demonstrated the process with a microbial mock community standard. The DNA was successfully amplified, primers were degraded, and libraries prepared and sequenced. The median percent identities for both datasets were 84%, as assessed from alignment of the mock community. The ability to correctly identify the organisms in the mock community standard was comparable for the sequencing data obtained in flight and on the ground. To validate the process on microbes collected from and cultured aboard the ISS, bacterial cells were selected from a NASA Environmental Health Systems Surface Sample Kit contact slide. The locations of bacterial colonies chosen for identification were labeled, and a small number of cells were directly added as input into the sequencing workflow. Prepared DNA was sequenced, and the data were downlinked to Earth. Return of the contact slide to the ground allowed for standard laboratory processing for bacterial identification. The identifications obtained aboard the ISS, Staphylococcus hominis and Staphylococcus capitis, matched those determined on the ground down to the species level. This marks the first ever identification of microbes entirely off Earth, and this validated process could be used for in-flight microbial identification, diagnosis of infectious disease in a crewmember, and as a research platform for investigators around the world.
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31
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Ticli G, Prosperi E. In Situ Analysis of DNA-Protein Complex Formation upon Radiation-Induced DNA Damage. Int J Mol Sci 2019; 20:ijms20225736. [PMID: 31731696 PMCID: PMC6888283 DOI: 10.3390/ijms20225736] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/13/2019] [Accepted: 11/14/2019] [Indexed: 01/05/2023] Open
Abstract
The importance of determining at the cellular level the formation of DNA–protein complexes after radiation-induced lesions to DNA is outlined by the evidence that such interactions represent one of the first steps of the cellular response to DNA damage. These complexes are formed through recruitment at the sites of the lesion, of proteins deputed to signal the presence of DNA damage, and of DNA repair factors necessary to remove it. Investigating the formation of such complexes has provided, and will probably continue to, relevant information about molecular mechanisms and spatiotemporal dynamics of the processes that constitute the first barrier of cell defense against genome instability and related diseases. In this review, we will summarize and discuss the use of in situ procedures to detect the formation of DNA-protein complexes after radiation-induced DNA damage. This type of analysis provides important information on the spatial localization and temporal resolution of the formation of such complexes, at the single-cell level, allowing the study of heterogeneous cell populations.
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Affiliation(s)
- Giulio Ticli
- Istituto di Genetica Molecolare “Luca Cavalli Sforza”, Consiglio Nazionale delle Ricerche (CNR), 27100 Pavia, Italy;
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27100 Pavia, Italy
| | - Ennio Prosperi
- Istituto di Genetica Molecolare “Luca Cavalli Sforza”, Consiglio Nazionale delle Ricerche (CNR), 27100 Pavia, Italy;
- Correspondence:
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32
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Toldrà A, O'Sullivan CK, Campàs M. Detecting Harmful Algal Blooms with Isothermal Molecular Strategies. Trends Biotechnol 2019; 37:1278-1281. [PMID: 31399265 DOI: 10.1016/j.tibtech.2019.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/11/2019] [Accepted: 07/12/2019] [Indexed: 11/24/2022]
Abstract
The use of isothermal nucleic acid amplification strategies to detect harmful algal blooms (HABs) is in its infancy. We describe recent advances in these systems and highlight the challenges for the achievement of simple, low-cost, compact, and portable devices for field applications.
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Affiliation(s)
- Anna Toldrà
- IRTA, Ctra. Poble Nou km 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - Ciara K O'Sullivan
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain; ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain.
| | - Mònica Campàs
- IRTA, Ctra. Poble Nou km 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain.
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Naraoka H, Hashiguchi M, Sato Y, Hamase K. New Applications of High-Resolution Analytical Methods to Study Trace Organic Compounds in Extraterrestrial Materials. Life (Basel) 2019; 9:life9030062. [PMID: 31357539 PMCID: PMC6789776 DOI: 10.3390/life9030062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 11/16/2022] Open
Abstract
Organic compounds are present as complex mixtures in extraterrestrial materials including meteorites, which may have played important roles in the origin of life on the primitive Earth. However, the distribution and formation mechanisms of meteoritic organic compounds are not well understood, because conventional analytical methods have limited resolution and sensitivity to resolve their molecular complexity. In this study, advanced instrumental development and analyses are proposed in order to study the trace organic compounds of extraterrestrial materials: (1) a clean room environment to avoid organic contamination during analysis; (2) high-mass-resolution analysis (up to ~150,000 m/m) coupled with high-performance liquid chromatography (HPLC) in order to determine the elemental composition using exact mass for inferring the chemical structure; (3) superior chromatographic separation using a two-dimensional system in order to determine the structural and optical isomers of amino acids; and (4) in situ organic compound analysis and molecular imaging of the sample surface. This approach revealed a higher complexity of organic compounds with a heterogeneous distribution in meteorites. These new methods can be applied to study the chemical evolution of meteoritic organic compounds as well as the molecular occurrence in very-low-mass extraterrestrial materials such as asteroid-returned samples.
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Affiliation(s)
- Hiroshi Naraoka
- Research Center for Planetary Trace Organic Compounds, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
- Department of Earth and Planetary Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Minako Hashiguchi
- Research Center for Planetary Trace Organic Compounds, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yu Sato
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Kenji Hamase
- Research Center for Planetary Trace Organic Compounds, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Bariya M, Shahpar Z, Park H, Sun J, Jung Y, Gao W, Nyein HYY, Liaw TS, Tai LC, Ngo QP, Chao M, Zhao Y, Hettick M, Cho G, Javey A. Roll-to-Roll Gravure Printed Electrochemical Sensors for Wearable and Medical Devices. ACS Nano 2018; 12:6978-6987. [PMID: 29924589 DOI: 10.1021/acsnano.8b02505] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
As recent developments in noninvasive biosensors spearhead the thrust toward personalized health and fitness monitoring, there is a need for high throughput, cost-effective fabrication of flexible sensing components. Toward this goal, we present roll-to-roll (R2R) gravure printed electrodes that are robust under a range of electrochemical sensing applications. We use inks and electrode morphologies designed for electrochemical and mechanical stability, achieving devices with uniform redox kinetics printed on 150 m flexible substrate rolls. We show that these electrodes can be functionalized into consistently high performing sensors for detecting ions, metabolites, heavy metals, and other small molecules in noninvasively accessed biofluids, including sensors for real-time, in situ perspiration monitoring during exercise. This development of robust and versatile R2R gravure printed electrodes represents a key translational step in enabling large-scale, low-cost fabrication of disposable wearable sensors for personalized health monitoring applications.
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Affiliation(s)
- Mallika Bariya
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Ziba Shahpar
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Hyejin Park
- Department of Printed Electronics Engineering , Sunchon National University , Sunchon , Jeonnam 540-742 , South Korea
| | - Junfeng Sun
- Department of Printed Electronics Engineering , Sunchon National University , Sunchon , Jeonnam 540-742 , South Korea
| | - Younsu Jung
- Department of Printed Electronics Engineering , Sunchon National University , Sunchon , Jeonnam 540-742 , South Korea
| | - Wei Gao
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Hnin Yin Yin Nyein
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Tiffany Sun Liaw
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Li-Chia Tai
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Quynh P Ngo
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Minghan Chao
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Yingbo Zhao
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Mark Hettick
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
| | - Gyoujin Cho
- Department of Printed Electronics Engineering , Sunchon National University , Sunchon , Jeonnam 540-742 , South Korea
| | - Ali Javey
- Department of Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
- Berkeley Sensor and Actuator Center , University of California , Berkeley , California 94720 , United States
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States
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Qin L, Zhang Y, Liu Y, He H, Han M, Li Y, Zeng M, Wang X. Recent advances in matrix-assisted laser desorption/ionisation mass spectrometry imaging (MALDI-MSI) for in situ analysis of endogenous molecules in plants. Phytochem Anal 2018; 29:351-364. [PMID: 29667236 DOI: 10.1002/pca.2759] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/01/2018] [Accepted: 02/04/2018] [Indexed: 05/27/2023]
Abstract
INTRODUCTION Mass spectrometry imaging (MSI) as a label-free and powerful imaging technique enables in situ evaluation of a tissue metabolome and/or proteome, becoming increasingly popular in the detection of plant endogenous molecules. OBJECTIVE The characterisation of structure and spatial information of endogenous molecules in plants are both very important aspects to better understand the physiological mechanism of plant organism. METHODS Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) is a commonly-used tissue imaging technique, which requires matrix to assist in situ detection of a variety of molecules on the surface of a tissue section. In previous studies, MALDI-MSI was mostly used for the detection of molecules from animal tissue sections, compared to plant samples due to cell structural limitations, such as plant cuticles, epicuticular waxes, and cell walls. Despite the enormous progress that has been made in tissue imaging, there is still a challenge for MALDI-MSI suitable for the imaging of endogenous compounds in plants. RESULTS This review summarises the recent advances in MALDI-MSI, focusing on the application of in situ detection of endogenous molecules in different plant organs, i.e. root, stem, leaf, flower, fruit, and seed. CONCLUSION Further improvements on instrumentation sensitivity, matrix selection, image processing and sample preparation will expand the application of MALDI-MSI in plant research.
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Affiliation(s)
- Liang Qin
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
| | - Yawen Zhang
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
| | - Yaqin Liu
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
| | - Huixin He
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
| | - Manman Han
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
| | - Yanyan Li
- The Hospital of Minzu University of China, Minzu University of China, Beijing, P. R. China
| | - Maomao Zeng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, P. R. China
- Collaborative Innovation Centre of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, P. R. China
| | - Xiaodong Wang
- Centre for Imaging & Systems Biology, Minzu University of China, Beijing, P. R. China
- College of Life and Environmental Sciences, Minzu University of China, Beijing, P. R. China
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Zhang J, Li D, Yue X, Zhang M, Liu P, Li G. Colorimetric in situ assay of membrane-bound enzyme based on lipid bilayer inhibition of ion transport. Theranostics 2018; 8:3275-3283. [PMID: 29930729 PMCID: PMC6010988 DOI: 10.7150/thno.25123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/01/2018] [Indexed: 12/19/2022] Open
Abstract
Membrane-bound enzymes (MBEs), which make up a very high proportion of intracellular enzymes, catalyze a variety of activities that are currently analyzed by various techniques after purification. However, due to their amphipathic character, the purification of MBEs is difficult. Therefore, the most productive approach represents in situ analysis of MBEs in the cellular membrane. Methods: In this study, using membrane-bound α-glucosidase (α-Glu) as an example, we have developed a colorimetric in situ assay for MBEs based on the inhibitory effect of lipid bilayer on ion transport. The enzyme substrate could mediate the self-assembly of phospholipid PEG derivative around magnetic nanospheres that were modified with boronic acid. The formation of lipid bilayer could inhibit the leaking of iron ions under acidic conditions. However, the product of the catalytic reaction had no capability for self-assembly of the lipid bilayer, leading to the release of iron ions from the magnetic nanospheres under acidic pH. Results: The colorimetric in situ assay for MBEs could not only analyze the activity of membrane-bound α-Glu located on Caco-2 cells but could also evaluate the α-Glu inhibitors in cell medium. Conclusions: The simple, economic, and efficient method proposed here offers a potential application for high-throughput testing of α-Glu and its inhibitors. Our study also outlines a strategy for exploring the colorimetric method to detect the activities of MBEs in situ.
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Affiliation(s)
- Juan Zhang
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Defeng Li
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
- Shanghai Key Laboratory of Bio-Energy Crops, Shanghai University, Shanghai 200444, P. R. China
| | - Xiquan Yue
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Meiling Zhang
- Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Ping Liu
- Department of Oncology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Genxi Li
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing 210093, P. R. China
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Shen Y, Liang L, Zhang S, Huang D, Deng R, Zhang J, Qu H, Xu S, Liang C, Xu W. Organelle-Targeting Gold Nanorods for Macromolecular Profiling of Subcellular Organelles and Enhanced Cancer Cell Killing. ACS Appl Mater Interfaces 2018; 10:7910-7918. [PMID: 29436215 DOI: 10.1021/acsami.8b01320] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Subcellular organelles, for example, nucleus, mitochondria, and lysosome, are the vital organelles with responsibilities that maintain cell operation and metabolism. Owing to their roles in energy production and programmed cell death, these organelles have become prime therapeutic targets in different diseases and states. In this study, biocompatible, organelle-targeting nanoprobes were developed by modifying gold nanorods (AuNRs) with specific targeting peptides. These nanoprobes were employed to directly profile subcellular biomolecules and vital organelles by surface-enhanced Raman scattering (SERS) spectroscopy. Macromolecular spectral profiles of subcellular organelles were achieved and compared. Further, these organelle-targeting AuNRs were used for the photothermal treatment of cancer cells (HepG2, HeLa, and MCF-7 cell lines). The cell viability assays show that the nucleus- and mitochondria-targeting AuNRs provide higher photothermal efficiencies under an 808 nm laser relative to the lysosome-targeting ones. This study makes critical insights into the spectral profiles of subcellular organelles and also inspires people in the development of high-efficacy cancer therapeutic strategies by subcellular organelle-targeting drugs.
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Affiliation(s)
- Yanting Shen
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Lijia Liang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Shuqin Zhang
- Institute of Frontier Medical Science , Jilin University , Changchun 130021 , People's Republic of China
| | - Dianshuai Huang
- Institute of Frontier Medical Science , Jilin University , Changchun 130021 , People's Republic of China
| | - Rong Deng
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Jing Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Huixin Qu
- Institute of Frontier Medical Science , Jilin University , Changchun 130021 , People's Republic of China
| | - Shuping Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Chongyang Liang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
| | - Weiqing Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry , Jilin University , Changchun 130012 , China
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38
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Nagler M, Nägele T, Gilli C, Fragner L, Korte A, Platzer A, Farlow A, Nordborg M, Weckwerth W. Eco-Metabolomics and Metabolic Modeling: Making the Leap From Model Systems in the Lab to Native Populations in the Field. Front Plant Sci 2018; 9:1556. [PMID: 30459786 PMCID: PMC6232504 DOI: 10.3389/fpls.2018.01556] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 10/04/2018] [Indexed: 05/05/2023]
Abstract
Experimental high-throughput analysis of molecular networks is a central approach to characterize the adaptation of plant metabolism to the environment. However, recent studies have demonstrated that it is hardly possible to predict in situ metabolic phenotypes from experiments under controlled conditions, such as growth chambers or greenhouses. This is particularly due to the high molecular variance of in situ samples induced by environmental fluctuations. An approach of functional metabolome interpretation of field samples would be desirable in order to be able to identify and trace back the impact of environmental changes on plant metabolism. To test the applicability of metabolomics studies for a characterization of plant populations in the field, we have identified and analyzed in situ samples of nearby grown natural populations of Arabidopsis thaliana in Austria. A. thaliana is the primary molecular biological model system in plant biology with one of the best functionally annotated genomes representing a reference system for all other plant genome projects. The genomes of these novel natural populations were sequenced and phylogenetically compared to a comprehensive genome database of A. thaliana ecotypes. Experimental results on primary and secondary metabolite profiling and genotypic variation were functionally integrated by a data mining strategy, which combines statistical output of metabolomics data with genome-derived biochemical pathway reconstruction and metabolic modeling. Correlations of biochemical model predictions and population-specific genetic variation indicated varying strategies of metabolic regulation on a population level which enabled the direct comparison, differentiation, and prediction of metabolic adaptation of the same species to different habitats. These differences were most pronounced at organic and amino acid metabolism as well as at the interface of primary and secondary metabolism and allowed for the direct classification of population-specific metabolic phenotypes within geographically contiguous sampling sites.
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Affiliation(s)
- Matthias Nagler
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
| | - Thomas Nägele
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
- LMU Munich, Plant Evolutionary Cell Biology, Munich, Germany
| | - Christian Gilli
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
| | - Lena Fragner
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| | - Arthur Korte
- Center for Computational and Theoretical Biology, University of Würzburg, Würzburg, Germany
| | - Alexander Platzer
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna, Austria
| | - Ashley Farlow
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna, Austria
| | - Magnus Nordborg
- Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna, Austria
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
- *Correspondence: Wolfram Weckwerth,
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Adams H, Miller BP, Furlong OJ, Fantauzzi M, Navarra G, Rossi A, Xu Y, Kotvis PV, Tysoe WT. Modeling Mechanochemical Reaction Mechanisms. ACS Appl Mater Interfaces 2017; 9:26531-26538. [PMID: 28742322 DOI: 10.1021/acsami.7b05440] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The mechanochemical reaction between copper and dimethyl disulfide is studied under well-controlled conditions in ultrahigh vacuum (UHV). Reaction is initiated by fast S-S bond scission to form adsorbed methyl thiolate species, and the reaction kinetics are reproduced by two subsequent elementary mechanochemical reaction steps, namely a mechanochemical decomposition of methyl thiolate to deposit sulfur on the surface and evolve small, gas-phase hydrocarbons, and sliding-induced oxidation of the copper by sulfur that regenerates vacant reaction sites. The steady-state reaction kinetics are monitored in situ from the variation in the friction force as the reaction proceeds and modeled using the elementary-step reaction rate constants found for monolayer adsorbates. The analysis yields excellent agreement between the experiment and the kinetic model, as well as correctly predicting the total amount of subsurface sulfur in the film measured using Auger spectroscopy and the sulfur depth distribution measured by angle-resolved X-ray photoelectron spectroscopy.
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Affiliation(s)
- Heather Adams
- Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States
| | - Brendan P Miller
- Chevron Oronite Company, LLC. , 100 Chevron Way, Richmond, California 94802, United States
| | - Octavio J Furlong
- INFAP/CONICET, Universidad Nacional de San Luis , Ejército de los Andes 950, 5700 San Luis, Argentina
| | - Marzia Fantauzzi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari , Campus di Monserrato S.S. 554, Cagliari 09124, Italy
- INSTM, UdR , Cagliari 09100 Italy
| | - Gabriele Navarra
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari , Campus di Monserrato S.S. 554, Cagliari 09124, Italy
- INSTM, UdR , Cagliari 09100 Italy
| | - Antonella Rossi
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari , Campus di Monserrato S.S. 554, Cagliari 09124, Italy
- INSTM, UdR , Cagliari 09100 Italy
| | - Yufu Xu
- Institute of Tribology, School of Mechanical and Automotive Engineering, Hefei University of Technology , Hefei 230009, China
| | - Peter V Kotvis
- Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States
| | - Wilfred T Tysoe
- Department of Chemistry and Laboratory for Surface Studies, University of Wisconsin-Milwaukee , Milwaukee, Wisconsin 53211, United States
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Adame-Siles JA, Fearn T, Guerrero-Ginel JE, Garrido-Varo A, Maroto-Molina F, Pérez-Marín D. Near-Infrared Spectroscopy and Geostatistical Analysis for Modeling Spatial Distribution of Analytical Constituents in Bulk Animal By-Product Protein Meals. Appl Spectrosc 2017; 71:520-532. [PMID: 28287315 DOI: 10.1177/0003702816683958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Control and inspection operations within the context of safety and quality assessment of bulk foods and feeds are not only of particular importance, they are also demanding challenges, given the complexity of food/feed production systems and the variability of product properties. Existing methodologies have a variety of limitations, such as high costs of implementation per sample or shortcomings in early detection of potential threats for human/animal health or quality deviations. Therefore, new proposals are required for the analysis of raw materials in situ in a more efficient and cost-effective manner. For this purpose, a pilot laboratory study was performed on a set of bulk lots of animal by-product protein meals to introduce and test an approach based on near-infrared (NIR) spectroscopy and geostatistical analysis. Spectral data, provided by a fiber optic probe connected to a Fourier transform (FT) NIR spectrometer, were used to predict moisture and crude protein content at each sampling point. Variographic analysis was carried out for spatial structure characterization, while ordinary Kriging achieved continuous maps for those parameters. The results indicated that the methodology could be a first approximation to an approach that, properly complemented with the Theory of Sampling and supported by experimental validation in real-life conditions, would enhance efficiency and the decision-making process regarding safety and adulteration issues.
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Affiliation(s)
- José A Adame-Siles
- 1 Department of Animal Production, Non-Destructive Spectral Sensor Unit, Faculty of Agricultural and Forestry Engineering, University of Córdoba, Córdoba, Spain
| | - Tom Fearn
- 2 Department of Statistical Science, University College London, London, UK
| | - José E Guerrero-Ginel
- 1 Department of Animal Production, Non-Destructive Spectral Sensor Unit, Faculty of Agricultural and Forestry Engineering, University of Córdoba, Córdoba, Spain
| | - Ana Garrido-Varo
- 1 Department of Animal Production, Non-Destructive Spectral Sensor Unit, Faculty of Agricultural and Forestry Engineering, University of Córdoba, Córdoba, Spain
| | - Francisco Maroto-Molina
- 1 Department of Animal Production, Non-Destructive Spectral Sensor Unit, Faculty of Agricultural and Forestry Engineering, University of Córdoba, Córdoba, Spain
| | - Dolores Pérez-Marín
- 1 Department of Animal Production, Non-Destructive Spectral Sensor Unit, Faculty of Agricultural and Forestry Engineering, University of Córdoba, Córdoba, Spain
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García-Bucio MA, Casanova-González E, Ruvalcaba-Sil JL, Arroyo-Lemus E, Mitrani-Viggiano A. Spectroscopic characterization of sixteenth century panel painting references using Raman, surface-enhanced Raman spectroscopy and helium-Raman system for in situ analysis of Ibero-American Colonial paintings. Philos Trans A Math Phys Eng Sci 2016; 374:rsta.2016.0051. [PMID: 27799434 PMCID: PMC5095528 DOI: 10.1098/rsta.2016.0051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
Colonial panel paintings constitute an essential part of Latin-American cultural heritage. Their study is vital for understanding the manufacturing process, including its evolution in history, as well as its authorship, dating and other information significant to art history and conservation purposes. Raman spectroscopy supplies a non-destructive characterization tool, which can be implemented for in situ analysis, via portable equipment. Specific methodologies must be developed, comprising the elaboration of reference panel paintings using techniques and materials similar to those of the analysed period, as well as the determination of the best analysis conditions for different pigments and ground preparations. In order to do so, Raman spectroscopy at 532, 785 and 1064 nm, surface-enhanced Raman spectroscopy (SERS) and a helium-Raman system were applied to a panel painting reference, in combination with X-ray fluorescence analysis. We were able to establish the analysis conditions for a number of sixteenth century pigments and dyes, and other relevant components of panel paintings from this period, 1064 nm Raman and SERS being the most successful. The acquired spectra contain valuable specific information for their identification and they conform a very useful database that can be applied to the analysis of Ibero-American Colonial paintings.This article is part of the themed issue 'Raman spectroscopy in art and archaeology'.
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Affiliation(s)
- María Angélica García-Bucio
- Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, 04510 Mexico City, Mexico
| | - Edgar Casanova-González
- CONACyT-Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, 04510 Mexico City, Mexico
| | - José Luis Ruvalcaba-Sil
- Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, 04510 Mexico City, Mexico
| | - Elsa Arroyo-Lemus
- Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Instituto de Investigaciones Estéticas, Universidad Nacional Autónoma de México, Circuito Mario de la Cueva S/N, Ciudad Universitaria, Coyoacán, 04510 Mexico City, Mexico
| | - Alejandro Mitrani-Viggiano
- Laboratorio Nacional de Ciencias para la Investigación y Conservación del Patrimonio Cultural, Instituto de Física, Universidad Nacional Autónoma de México, Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, 04510 Mexico City, Mexico
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Nyein HYY, Gao W, Shahpar Z, Emaminejad S, Challa S, Chen K, Fahad HM, Tai LC, Ota H, Davis RW, Javey A. A Wearable Electrochemical Platform for Noninvasive Simultaneous Monitoring of Ca(2+) and pH. ACS Nano 2016; 10:7216-24. [PMID: 27380446 DOI: 10.1021/acsnano.6b04005] [Citation(s) in RCA: 299] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Homeostasis of ionized calcium in biofluids is critical for human biological functions and organ systems. Measurement of ionized calcium for clinical applications is not easily accessible due to its strict procedures and dependence on pH. pH balance in body fluids greatly affects metabolic reactions and biological transport systems. Here, we demonstrate a wearable electrochemical device for continuous monitoring of ionized calcium and pH of body fluids using a disposable and flexible array of Ca(2+) and pH sensors that interfaces with a flexible printed circuit board. This platform enables real-time quantitative analysis of these sensing elements in body fluids such as sweat, urine, and tears. Accuracy of Ca(2+) concentration and pH measured by the wearable sensors is validated through inductively coupled plasma-mass spectrometry technique and a commercial pH meter, respectively. Our results show that the wearable sensors have high repeatability and selectivity to the target ions. Real-time on-body assessment of sweat is also performed, and our results indicate that calcium concentration increases with decreasing pH. This platform can be used in noninvasive continuous analysis of ionized calcium and pH in body fluids for disease diagnosis such as primary hyperparathyroidism and kidney stones.
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Affiliation(s)
- Hnin Yin Yin Nyein
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Wei Gao
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | | | - Sam Emaminejad
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
- Stanford Genome Technology Center, Stanford School of Medicine , Palo Alto, California 94304, United States
| | - Samyuktha Challa
- Stanford Genome Technology Center, Stanford School of Medicine , Palo Alto, California 94304, United States
| | - Kevin Chen
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | | | - Li-Chia Tai
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Hiroki Ota
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
| | - Ronald W Davis
- Stanford Genome Technology Center, Stanford School of Medicine , Palo Alto, California 94304, United States
| | - Ali Javey
- Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States
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43
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Jabart E, Rangarajan S, Lieu C, Hack J, Conboy I, Sohn LL. A Microfluidic Method for the Selection of Undifferentiated Human Embryonic Stem Cells and in Situ Analysis. Microfluid Nanofluidics 2015; 18:955-966. [PMID: 33688311 PMCID: PMC7939131 DOI: 10.1007/s10404-014-1485-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Conventional cell-sorting methods such as fluorescence-activated cell sorting (FACS) or magnetic-activated cell sorting (MACS) can suffer from certain shortcomings such as lengthy sample preparation time, cell modification through antibody labeling, and cell damage due to exposure to high shear forces or to attachment of superparamagnetic Microbeads. In light of these drawbacks, we have recently developed a label-free, microfluidic platform that can not only select cells with minimal sample preparation but also enable analysis of cells in situ. We demonstrate the utility of our platform by successfully isolating undifferentiated human embryonic stem cells (hESCs) from a heterogeneous population based on the undifferentiated stem-cell marker SSEA-4. Importantly, we show that, in contrast to MACS or FACS, cells isolated by our method have very high viability (~90%). Overall, our platform technology could likely be applied to other cell types beyond hESCs and to a variety of heterogeneous cell populations in order to select and analyze cells of interest.
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Affiliation(s)
- E. Jabart
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - S. Rangarajan
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - C. Lieu
- School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - J. Hack
- Dept. of Mechanical Engineering, University of California, Berkeley 94720, USA
| | - I. Conboy
- Dept. of Bioengineering, University of California, Berkeley 94720, USA
| | - L. L. Sohn
- Dept. of Mechanical Engineering, University of California, Berkeley 94720, USA
- Author to whom correspondence should be addressed: , 510-642-5434
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Le Pogam P, Legouin B, Le Lamer AC, Boustie J, Rondeau D. Analysis of the cyanolichen Lichina pygmaea metabolites using in situ DART-MS: from detection to thermochemistry of mycosporine serinol. J Mass Spectrom 2015; 50:454-462. [PMID: 25800181 DOI: 10.1002/jms.3549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/06/2014] [Accepted: 11/19/2014] [Indexed: 06/04/2023]
Abstract
Direct Analysis in Real Time DART-HRMS is here first applied to the detection of molecules from a lichen, Lichina pygmaea. The aim was to propose an innovative method of in situ detection of lichen secondary metabolites using the possibilities of elemental composition determination available when a DART source is interfaced with a TOF analyzer. Three kinds of samples have been submitted to DART ionization, i.e. an intact thallus, a powder obtained from the crushed lichen and an aqueous extract. In situ analysis of crushed lichen, yields an extensive chemical profile, comparable to what is obtained from the aqueous extract, comprising both major polar metabolites described in literature along with some other signals that could correspond to potentially unknown metabolites. One of the detected secondary metabolites, mycosporine serinol, underwent a dehydration reaction prior to its transfer in the gas-phase by DART ionization. The consideration of the thermal transfers involved in the DART ionization process and the possibility to record time-dependent mass spectra through the use of the TOF analyzer allowed establishing Arrhenius plots of this water molecule loss to obtain associated thermodynamic quantities. The low values of corresponding activation enthalpy (Δr‡Hm° of the order of 25 kJ mol(-1)) enabled formulating some assumption regarding a possible role of such metabolites in the lichen.
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Affiliation(s)
- Pierre Le Pogam
- Laboratoire de Pharmacognosie, Equipe PNSCM, (ISCR UMR CNRS 6226), Faculté des Sciences Pharmaceutiques et Biologiques, 2 av. du Pr Léon-Bernard, 35042, Rennes Cedex, France
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45
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Itou M, Orikasa Y, Gogyo Y, Suzuki K, Sakurai H, Uchimoto Y, Sakurai Y. Compton scattering imaging of a working battery using synchrotron high-energy X-rays. J Synchrotron Radiat 2015; 22:161-4. [PMID: 25537603 PMCID: PMC4294028 DOI: 10.1107/s1600577514024321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 11/05/2014] [Indexed: 06/01/2023]
Abstract
Results of studies on Compton scattering imaging using synchrotron high-energy X-rays are reported. The technique is applied to a discharging coin cell, and the intensity of Compton scattered X-rays from the inside of the cell has been measured as a function of position and time. The position-time intensity map captures the migration of lithium ions in the positive electrode and reveals the structural change due to the volume expansion of the electrode. This experiment is a critical step in developing synchrotron-based Compton scattering imaging for electrochemical cells at a product level.
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Affiliation(s)
- Masayoshi Itou
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Yuki Orikasa
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yuma Gogyo
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kosuke Suzuki
- Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Hiroshi Sakurai
- Faculty of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Yoshiharu Uchimoto
- Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshiharu Sakurai
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
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Lee YK, Kim S, Nam JM. Dark-field-based observation of single-nanoparticle dynamics on a supported lipid bilayer for in situ analysis of interacting molecules and nanoparticles. Chemphyschem 2014; 16:77-84. [PMID: 25345401 DOI: 10.1002/cphc.201402529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Indexed: 11/11/2022]
Abstract
Observation of single plasmonic nanoparticles in reconstituted biological systems allows us to obtain snapshots of dynamic processes between molecules and nanoparticles with unprecedented spatiotemporal resolution and single-molecule/single-particle-level data acquisition. This Concept is intended to introduce nanoparticle-tethered supported lipid bilayer platforms that allow for the dynamic confinement of nanoparticles on a two-dimensional fluidic surface. The dark-field-based long-term, stable, real-time observation of freely diffusing plasmonic nanoparticles on a lipid bilayer enables one to extract a broad range of information about interparticle and molecular interactions throughout the entire reaction period. Herein, we highlight important developments in this context to provide ideas on how molecular interactions can be interpreted by monitoring dynamic behaviors and optical signals of laterally mobile nanoparticles.
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Affiliation(s)
- Young Kwang Lee
- Department of Chemistry, Seoul National University, Seoul 151-747 (South Korea); Howard Hughes Medical Institute and Department of Chemistry, University of California, Berkeley, CA 94720 (USA)
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Lam L, Soong R, Sutrisno A, de Visser R, Simpson MJ, Wheeler HL, Campbell M, Maas WE, Fey M, Gorissen A, Hutchins H, Andrew B, Struppe J, Krishnamurthy S, Kumar R, Monette M, Stronks HJ, Hume A, Simpson AJ. Comprehensive multiphase NMR spectroscopy of intact ¹³C-labeled seeds. J Agric Food Chem 2014; 62:107-115. [PMID: 24354469 DOI: 10.1021/jf4045638] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Seeds are complex entities composed of liquids, gels, and solids. NMR spectroscopy is a powerful tool for studying molecular structure but has evolved into two fields, solution and solid state. Comprehensive multiphase (CMP) NMR spectroscopy is capable of liquid-, gel-, and solid-state experiments for studying intact samples where all organic components are studied and differentiated in situ. Herein, intact (13)C-labeled seeds were studied by a variety of 1D/2D (1)H/(13)C experiments. In the mobile phase, an assortment of metabolites in a single (13)C-labeled wheat seed were identified; the gel phase was dominated by triacylglycerides; the semisolid phase was composed largely of carbohydrate biopolymers, and the solid phase was greatly influenced by starchy endosperm signals. Subsequently, the seeds were compared and relative similarities and differences between seed types discussed. This study represents the first application of CMP-NMR to food chemistry and demonstrates its general utility and feasibility for studying intact heterogeneous samples.
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Affiliation(s)
- Leayen Lam
- Department of Physical and Environment Sciences, University of Toronto Scarborough , 1265 Military Trail, Toronto, Ontario, Canada M1C 1A4
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Tanida H, Fukuda K, Murayama H, Orikasa Y, Arai H, Uchimoto Y, Matsubara E, Uruga T, Takeshita K, Takahashi S, Sano M, Aoyagi H, Watanabe A, Nariyama N, Ohashi H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Furukawa Y, Ohata T, Matsushita T, Ishizawa Y, Kudo T, Kimura H, Yamazaki H, Tanaka T, Bizen T, Seike T, Goto S, Ohno H, Takata M, Kitamura H, Ishikawa T, Ohta T, Ogumi Z. RISING beamline (BL28XU) for rechargeable battery analysis. J Synchrotron Radiat 2014; 21:268-72. [PMID: 24365948 PMCID: PMC3874024 DOI: 10.1107/s1600577513025733] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 09/17/2013] [Indexed: 06/03/2023]
Abstract
The newly installed BL28XU beamline at SPring-8 is dedicated to in situ structural and electronic analysis of rechargeable batteries. It supports the time range (1 ms to 100 s) and spatial range (1 µm to 1 mm) needed for battery analysis. Electrochemical apparatus for battery charging and discharging are available in experimental hutches and in a preparation room. Battery analysis can be carried out efficiently and effectively using X-ray diffraction, X-ray absorption fine-structure analysis and hard X-ray photoelectron spectroscopy. Here, the design and performance of the beamline are described, and preliminary results are presented.
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Affiliation(s)
| | | | | | | | | | | | | | | | - K. Takeshita
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - S. Takahashi
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | | | - N. Nariyama
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Ohashi
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | | | | | - Y. Furukawa
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ohata
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | | | - T. Kudo
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Kimura
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | - T. Tanaka
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Bizen
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Seike
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - S. Goto
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | | | - M. Takata
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - H. Kitamura
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ishikawa
- JASRI/SPring-8, Japan
- Riken Harima Institute, Japan
| | - T. Ohta
- Ritsumeikan University, Japan
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