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Wulandari AP, Awis VPD, Budiono R, Kusmoro J, Hidayat SS, Masruchin N, Lubis MAR, Fatriasari W, Rachmawati U. Tensile Strength Improvements of Ramie Fiber Threads through Combination of Citric Acid and Sodium Hypophosphite Cross-Linking. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4758. [PMID: 37445071 DOI: 10.3390/ma16134758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
Ramie (Boehmeria nivea) is believed to be one of the strongest natural fibers, but it still remains behind synthetic materials in terms of tensile strength. In this study, ramie materials were prepared to evaluate the modification crosslinking effect of natural fiber. The aim is to optimize various concentrations of citric acid (CA) crosslinking by adding Sodium hypophosphite (NaPO2H2), which is activated at different temperatures, to obtain the highest tensile mechanical strength. This crosslinking effect has been confirmed by FTIR to show the esterification process in the molecular structure of cellulose. The changes in the character of the fiber surface were analyzed by SEM. The tensile strength increased from 62.33 MPa for 0% CA to 124-172.86 MPa for decorticated fiber with a CA concentration of 0.75-1.875% (w/w). A significant increase in tensile strength was observed more than 19 times when CA/SHP 1% was treated at an activation temperature of 110 °C with a superior tensile strength of 1290.63. The fiber crosslinked with CA/SHP should be recommended for application of Natural Fiber Reinforced Polymer Composite (NFRPC), which has the potential to use in functional textile and industrial sector automotive or construction.
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Affiliation(s)
- Asri Peni Wulandari
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Center for Study of Bioprospection of Natural Fiber and Bioresources, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Bandung 40132, Indonesia
| | - Vira Putri Dinda Awis
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | - Ruly Budiono
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Center for Study of Bioprospection of Natural Fiber and Bioresources, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Bandung 40132, Indonesia
| | - Joko Kusmoro
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Center for Study of Bioprospection of Natural Fiber and Bioresources, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Bandung 40132, Indonesia
| | - Sidiq Syamsul Hidayat
- Program for Study of Telecommunications Engineering, Electrical Engineering Major, Faculty of Engineering, Politeknik Negeri Semarang, Semarang 50275, Indonesia
| | - Nanang Masruchin
- Research Center for Biomass and Bioproduct, National Research and Innovation Agency, Bogor 16911, Indonesia
| | | | - Widya Fatriasari
- Research Center for Biomass and Bioproduct, National Research and Innovation Agency, Bogor 16911, Indonesia
| | - Ulyaa Rachmawati
- Department of Biology, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
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Yao X, Wang Y, Li F, Dalluge JJ, Orr G, Hernandez R, Cui Q, Haynes CL. Unconventional aliphatic fluorophores discovered as the luminescence origin in citric acid-urea carbon dots. NANOSCALE 2022; 14:9516-9525. [PMID: 35758638 DOI: 10.1039/d2nr02361j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Carbon dots (CDs) are emerging as the material of choice in a range of applications due to their excellent photoluminescence properties, ease of preparation from inexpensive precursors, and low toxicity. However, the precise nature of the mechanism for the fluorescence is still under debate, and several molecular fluorophores have been reported. In this work, a new blue fluorophore, 5-oxopyrrolidine-3-carboxylic acid, was discovered in carbon dots synthesized from the most commonly used precursors: citric acid and urea. The molecular product alone has demonstrated interesting aggregation-enhanced emission (AEE), making it unique compared to other fluorophores known to be generated in CDs. We propose that this molecular fluorophore is associated with a polymer backbone within the CDs, and its fluorescence behavior is largely dependent on intermolecular interactions with the polymers or other fluorophores. Thus, a new class of non-traditional fluorophores is now relevant to the consideration of the CD fluorescence mechanism, providing both an additional challenge to the community in resolving the mechanism and an opportunity for a greater range of CD design schemes and applications.
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Affiliation(s)
- Xiaoxiao Yao
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA.
| | - Yinhan Wang
- Departments of Chemistry, Chemical and Biomolecular Engineering, and Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Fangjia Li
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - Joseph J Dalluge
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA.
| | - Galya Orr
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
| | - Rigoberto Hernandez
- Departments of Chemistry, Chemical and Biomolecular Engineering, and Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Qiang Cui
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
- Departments of Physics and Biomedical Engineering, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
| | - Christy L Haynes
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, USA.
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Ciecholewska-Juśko D, Żywicka A, Junka A, Drozd R, Sobolewski P, Migdał P, Kowalska U, Toporkiewicz M, Fijałkowski K. Superabsorbent crosslinked bacterial cellulose biomaterials for chronic wound dressings. Carbohydr Polym 2020; 253:117247. [PMID: 33279002 DOI: 10.1016/j.carbpol.2020.117247] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/31/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022]
Abstract
In this work, we present a novel ex situ modification of bacterial cellulose (BC) polymer, that significantly improves its ability to absorb water after drying. The method involves a single inexpensive and easy-to-perform process of BC crosslinking, using citric acid along with catalysts, such as disodium phosphate, sodium bicarbonate, ammonium bicarbonate or their mixtures. In particular, the mixture of disodium phosphate and sodium bicarbonate was the most promising, yielding significantly greater water capacity (over 5 times higher as compared to the unmodified BC) and slower water release (over 6 times as compared to the unmodified BC). Further, our optimized crosslinked BC had over 1.5x higher water capacity than modern commercial dressings dedicated to highly exuding wounds, while exhibiting no cytotoxic effects against fibroblast cell line L929 in vitro. Therefore, our novel BC biomaterial may find application in super-absorbent dressings, designed for chronic wounds with imbalanced moisture level.
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Affiliation(s)
- Daria Ciecholewska-Juśko
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Anna Żywicka
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Adam Junka
- Department of Pharmaceutical Microbiology and Parasitology, Wrocław Medical University, Borowska 211A, 50-556 Wrocław, Poland.
| | - Radosław Drozd
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Peter Sobolewski
- Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Paweł Migdał
- Department of Environment, Hygiene and Animal Welfare, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 51-630 Wrocław, Poland.
| | - Urszula Kowalska
- Centre of Bioimmobilization and Innovative Packaging Materials, West Pomeranian University of Technology, Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Monika Toporkiewicz
- Laboratory of Confocal Microscopy, Łukasiewicz Research Network - PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland.
| | - Karol Fijałkowski
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, Szczecin, Piastów 45, 70-311 Szczecin, Poland.
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Wang Y, Xiao D, Zhong Y, Liu Y, Zhang L, Chen Z, Sui X, Wang B, Feng X, Xu H, Mao Z. Preparation and characterization of carboxymethylated cotton fabrics as hemostatic wound dressing. Int J Biol Macromol 2020; 160:18-25. [PMID: 32428591 DOI: 10.1016/j.ijbiomac.2020.05.099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 10/24/2022]
Abstract
Uncontrolled hemorrhage is a large cause of death in the global scope, thus leading to an urgent demand to develop efficient hemostatic materials. In this study, a series of modified cotton fabrics (MCFs) with different carboxymethyl group contents were prepared from cotton fabric (CF) by a carboxymethylation process to choose the appropriate one with the best hemostatic performance. The carboxymethyl group contents of MCFs rose up as the dosages of ClCH2COOH increased. The crystallinity of CF decreased after carboxymethylation, and MCFs can dissolve slightly with the phenomenon that there were vague boundaries between fibers after being treated with water. Furthermore, the MCF with the carboxymethyl group content at 0.77 mmol/g (MCF-0.77) could absorb the blood quickly, achieve dense distribution of blood cells and have high viscosity of leaching liquor. In addition, the MCF-0.77 with good biocompatibility accelerated the hemostasis time to 46.6 ± 8.4 s compared with the CF (88.8 ± 31.5 s) in a rat model of liver injury. In summary, the prepared MCF-0.77 is a potential hemostatic wound dressing for clinical use since every second counts for pre-hospital care.
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Affiliation(s)
- Yamei Wang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Dongdong Xiao
- Department of Urology and Andrology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China; Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yi Zhong
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Yujun Liu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Linping Zhang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Zhize Chen
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Xiaofeng Sui
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Bijia Wang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Xueling Feng
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China
| | - Hong Xu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China.
| | - Zhiping Mao
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Innovation Center for Textile Science and Technology, Donghua University, No. 2999 North Renmin Road, Shanghai 201620, China; National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, Shanghai, 201620, China.
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Mommer S, Kurniadi J, Keul H, Möller M. Formaldehyde‐free curing of cotton cellulose fabrics in anhydrous media. J Appl Polym Sci 2020. [DOI: 10.1002/app.48371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stefan Mommer
- DWI ‐ Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeck Street 50 52056 Aachen Germany
| | - Juliana Kurniadi
- DWI ‐ Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeck Street 50 52056 Aachen Germany
| | - Helmut Keul
- DWI ‐ Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeck Street 50 52056 Aachen Germany
| | - Martin Möller
- DWI ‐ Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeck Street 50 52056 Aachen Germany
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Rilda Y, Dwiyanti D, Syukri S, Agustien A, Pardi H. Enhancement of antifungal capability of cotton textiles coated with TiO 2–SiO 2/chitosan using citric acid and sodium hypophosphite catalyst. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1724797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yetria Rilda
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Andalas University, Padang, Indonesia
| | - Dita Dwiyanti
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Andalas University, Padang, Indonesia
| | - Syukri Syukri
- Faculty of Mathematics and Natural Sciences, Department of Chemistry, Andalas University, Padang, Indonesia
| | - Anthoni Agustien
- Faculty of Mathematics and Natural Sciences, Department of Biology, Andalas University, Padang, Indonesia
| | - Hilfi Pardi
- Faculty of Teacher Training and Education, Department of Chemistry Education, Maritime Raja Ali Haji University, Tanjungpinang, Indonesia
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Investigation on Reaction Sequence and Group Site of Citric Acid with Cellulose Characterized by FTIR in Combination with Two-Dimensional Correlation Spectroscopy. Polymers (Basel) 2019; 11:polym11122071. [PMID: 31842322 PMCID: PMC6961030 DOI: 10.3390/polym11122071] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/08/2019] [Accepted: 12/10/2019] [Indexed: 12/04/2022] Open
Abstract
Cotton fabrics are prone to wrinkles and can be treated with citric acid (CA) to obtain good anti-wrinkle properties. However, the yellowing of the CA-treated fabrics is one big obstacle to the practical application of citric acid. The changing sequence order of CA anhydride and unsaturated acid (the reason for yellowing), such as aconitic acid (AA), has not been investigated. Herein, Fourier transform infrared (FTIR) spectroscopy, two-dimensional correlation spectroscopy (2Dcos), and Gaussian calculation were employed to characterize the reaction mechanism between CA with cellulose. FTIR spectra of the CA-treated fabrics heated under different temperatures were collected and further analyzed with 2Dcos. The results indicated the changing sequence order: 1656 cm−1→1784 cm−1→1701 cm−1, (“→” means earlier than), i.e., unsaturated acid→anhydride→ester. Moreover, a change of Gibbs free energy (ΔG) showed that trans-AA (ΔG = −22.10 kJ/mol) is more thermodynamically favorable to be formed than CA anhydride 1 (ΔG = −0.90 kJ/mol), which was proved by Gaussian computational modeling. By taking cellobiose as a model of cellulose, the ΔG results proved that O(6)–H(6) on the glucose ring is the most likely hydroxyl to react with anhydride originated from CA or AA, especially with the terminal carbonyl group.
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Lou J, Fan X, Wang Q, Wang P, Yuan J, Yu Y. Oxysucrose polyaldehyde: A new hydrophilic crosslinking reagent for anti-crease finishing of cotton fabrics. Carbohydr Res 2019; 486:107783. [PMID: 31669569 DOI: 10.1016/j.carres.2019.107783] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 11/26/2022]
Abstract
For the first time, oxidized sucrose (oxysucrose) was used as a hydrophilic crosslinking reagent instead of conventional anti-crease reagents for cotton fabrics. In this research, the partial oxidization of sucrose with sodium periodate generated multiple aldehydes, which acted as multifunctional cross-linkers and endowed cotton fabrics with anti-crease and hydrophilic function. The results showed that the oxysucrose-treated cotton fabrics obtained the maximum crease recovery angle of 245°, durable press rating of 3.0, and whiteness index of 82.8. Importantly, the oxysucrose-treated samples showed better hydrophilicity that overcomes the hydrophobization deficiency of anti-creased cotton fabrics treated with previously reported dimethylol dihydroxy ethylene urea (DMDHEU), glutaraldehyde (GA), and 1, 2, 3, 4,-butanetetracarboxylic acid (BTCA). The etherification reaction between the aldehyde group of oxysucrose and the hydroxyl group of cellulose was investigated and the possible crosslinking and anti-crease mechanism was proposed.
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Affiliation(s)
- Jiangfei Lou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Xuerong Fan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Jiugang Yuan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu, 214122, China
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Tang P, Sun G. Generation of hydroxyl radicals and effective whitening of cotton fabrics by H 2O 2 under UVB irradiation. Carbohydr Polym 2016; 160:153-162. [PMID: 28115089 DOI: 10.1016/j.carbpol.2016.12.062] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/20/2016] [Accepted: 12/24/2016] [Indexed: 12/27/2022]
Abstract
Chemically crosslinked cotton fabrics may show yellowish appearance, especially citric acid (CA) crosslinked ones. Hydrogen peroxide (H2O2) bleaching under alkaline condition could improve the whiteness of the CA-crosslinked cotton fabrics but sacrificing certain crosslinking performance of the products due to alkaline hydrolysis of ester connections. Regular H2O2 and UV irradiation (H2O2/UV) system can destroy color but also damage fibers due to the use of very short wavelength of UVC such as 254nm or shorter. Now, it was found that longer wavelength UV such as 312nm performed better in H2O2/UV systems on CA-crosslinked cotton fabrics. The reaction mechanism and potential product of the oxidation reaction on CA-crosslinked cotton were proposed and demonstrated. UV-vis spectrophotometer and Fourier transform infrared spectroscopy provided key evidence. Whiteness, wrinkle recovery angle and tensile strength of the fabrics were evaluated, and the results support the mechanism. The process is environmentally friendly and highly efficient.
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Affiliation(s)
- Peixin Tang
- Division of Textiles and Clothing, University of California, Davis, CA 95616, USA
| | - Gang Sun
- Division of Textiles and Clothing, University of California, Davis, CA 95616, USA.
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Xia Z, Zhai X, Liu B, Mo Y. Conductometric titration to determine total volatile basic nitrogen (TVB-N) for post-mortem interval (PMI). J Forensic Leg Med 2016; 44:133-137. [DOI: 10.1016/j.jflm.2016.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/06/2016] [Accepted: 10/17/2016] [Indexed: 10/20/2022]
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