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Seok Y, Jang H, Choi Y, Ko Y, Kim M, Im H, Watanabe K, Taniguchi T, Seol JH, Chee SS, Nah J, Lee K. High-Field Electron Transport and High Saturation Velocity in Multilayer Indium Selenide Transistors. ACS Nano 2024; 18:8099-8106. [PMID: 38451218 DOI: 10.1021/acsnano.3c11613] [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: 03/08/2024]
Abstract
Creating a high-frequency electron system demands a high saturation velocity (υsat). Herein, we report the high-field transport properties of multilayer van der Waals (vdW) indium selenide (InSe). The InSe is on a hexagonal boron nitride substrate and encapsulated by a thin, noncontinuous In layer, resulting in an impressive electron mobility reaching 2600 cm2/(V s) at room temperature. The high-mobility InSe achieves υsat exceeding 2 × 107 cm/s, which is superior to those of other gapped vdW semiconductors, and exhibits a 50-60% improvement in υsat when cooled to 80 K. The temperature dependence of υsat suggests an optical phonon energy (ℏωop) for InSe in the range of 23-27 meV, previously reported values for InSe. It is also notable that the measured υsat values exceed what is expected according to the optical phonon emission model due to weak electron-phonon scattering. The superior υsat of our InSe, despite its relatively small ℏωop, reveals its potential for high-frequency electronics, including applications to control cryogenic quantum computers in close proximity.
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Affiliation(s)
- Yongwook Seok
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - YiTaek Choi
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Yeonghyeon Ko
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Minje Kim
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Heungsoon Im
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
| | - Takashi Taniguchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
| | - Jae Hun Seol
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Sang-Soo Chee
- Nano Convergence Materials Center, Korea Institute of Ceramic Engineering and Technology (KICET), Jinju 52851, Republic of Korea
| | - Junghyo Nah
- Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Kayoung Lee
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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Song J, Lee S, Seok Y, Ko Y, Jang H, Watanabe K, Taniguchi T, Lee K. Drain-Induced Multifunctional Ambipolar Electronics Based on Junctionless MoS 2. ACS Nano 2024; 18:4320-4328. [PMID: 38277645 DOI: 10.1021/acsnano.3c09876] [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: 01/28/2024]
Abstract
Applying a drain bias to a strongly gate-coupled semiconductor influences the carrier density of the channel. However, practical applications of this drain-bias-induced effect in the advancement of switching electronics have remained elusive due to the limited capabilities of its current modulation known to date. Here, we show strategies to largely control the current by utilizing drain-bias-induced carrier type switching in an ambipolar molybdenum disulfide (MoS2) field-effect transistor with Pt bottom contacts. Our CMOS-compatible device architecture, incorporating a partially gate-coupled p-n junction, achieves multifunctionality. The ambipolar MoS2 device operates as an ambipolar transistor (on/off ratios exceeding 107 for both NMOS and PMOS), a rectifier (rectification ratio of ∼3 × 106), a reversible negative breakdown diode with an adjustable breakdown voltage (on/off ratio exceeding 109 with a maximum current as high as 10-4 A), and a photodetector. Finally, we demonstrate a complementary inverter (gain of ∼24 at Vdd = 1.5 V), which is highly facile to fabricate without the need for complex heterostructures and doping processes. Our study provides strategies to achieve high-performance ambipolar MoS2 devices and to effectively utilize drain bias for electrical switching.
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Affiliation(s)
- Jungi Song
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Suyeon Lee
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yongwook Seok
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yeonghyeon Ko
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Kenji Watanabe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Takashi Taniguchi
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Kayoung Lee
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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3
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Jeong S, Kwon D, Lim J, Jang H, Kim J, Chung H. Identification of geographical origins of soybean pastes using headspace gas chromatography-mass spectrometry by selecting sample-descriptive components with an Incremental Association Markov Blanket. Food Res Int 2023; 174:113492. [PMID: 37986411 DOI: 10.1016/j.foodres.2023.113492] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 11/22/2023]
Abstract
The identification of geographical origins of soybean pastes using headspace gas chromatography-mass spectrometry was attempted in this study. Since soybean paste was odor-rich, 36 components were identified in the imported and domestic soybean samples. t-Test, variable importance in projection (VIP), and Incremental Association Markov Blanket (IAMB) were employed to select proper components that could effectively discriminate the two sample groups. The discrimination accuracies were below 87.3 % when all 36 components were fed for either LDA, k-NN, or SVM. When the five t-test-selected components or six VIP score-selected components were employed, the accuracies improved to 95.2-96.2 %. The IAMB selected three different components were 3-methylbutanal, 4-methylnonane, and 2,3-pentanedione, and the correlations among their peak areas were not significant. This suggests that these three components were independently relevant for the discrimination. The accuracy obtained using these three components was superior, 97.7 %, as undescriptive and/or redundant components for the discrimination were excluded.
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Affiliation(s)
- Seongsoo Jeong
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea
| | - Dokyung Kwon
- Department of Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Jina Lim
- Department of Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Hanbyeol Jang
- Department of Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea
| | - Jeongkwon Kim
- Department of Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 34134, Republic of Korea.
| | - Hoeil Chung
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Republic of Korea.
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4
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Choi KH, Mun SM, Seol Y, Lee YK, Lee JH, Lee IK, Lee YS, Jang H. The Role of Postoperative Radiotherapy in T4 Rectal Cancer with Synchronous Distant Metastasis. Int J Radiat Oncol Biol Phys 2023; 117:e288. [PMID: 37785066 DOI: 10.1016/j.ijrobp.2023.06.1279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Studieson the role of surgery and local treatment in M1 rectal cancer have been actively studied recently. However, there is still controversy because no significant results have been reported for local control. The purpose of this study was to analyze the local control rates of postoperative radiotherapy for tumor stage T4 in M1 rectal cancer. MATERIALS/METHODS We investigated local recurrence after surgery for M1 rectal cancer that was operated at Seoul St. Mary's Hospital between 1995 and 2021. Locoregional recurrence rates were compared in patients who received postoperative pelvic radiotherapy and those who did not. In addition, an analytical comparison was performed only for patients with T4 rectal cancer. Statistical analysis was performed using the log rank test, and a p-value of less than 0.05 was considered significant. RESULTS During the investigation period, a total of 206 patients underwent surgery for M1 rectal cancer. There were 55 patients with T4 tumor stage. Of the 55 patients, 11 patients received radiotherapy after surgery, and 44 patients received systemic treatment such as chemotherapy after surgery without radiotherapy. During a median follow-up of 22 months, locoregional recurrence occurred in 1 (RT group) and 25 (no RT group) patients, respectively. Log-rank analysis of locoregional recurrence showed a significant difference between the two groups (p- value = 0.008). Death occurred in 10 (RT group) and 38 (no RT group) patients, respectively. The 2-year locoregional recurrence free-survival rates were 45.5% and 53.0%, respectively, and there was no significant difference between the two groups in the log-rank analysis. CONCLUSION Pelvic radiotherapy could be expected to improve locoregional recurrence in stage T4 of rectal cancer with synchronous distant metastasis. It would be warranted to prove this in a large-scale prospective study.
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Affiliation(s)
- K H Choi
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - S M Mun
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y Seol
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y K Lee
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - J H Lee
- Department of Radiation Oncology, St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Korea, Republic of (South) Korea
| | - I K Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y S Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - H Jang
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
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5
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Park CB, Kang YN, Jang H, Kim YS, Choi BO, Son SH, Song JH, Choi KH, Lee YK, Sung W, Kim JL. Evaluation of Usefulness of Yeast-Based Biological Phantom and Preliminary Study for Verification of Hypoxic Effect of Flash Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e704. [PMID: 37786063 DOI: 10.1016/j.ijrobp.2023.06.2193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) As a basic hypothesis for the effectiveness of flash radiation therapy, the effect of preserving normal tissue during flash radiation is due to the instantaneous chemical depletion of oxygen. A yeast-based biological phantom was created to verify the hypoxic effect of flash radiation therapy. A study to upgrade the previously developed X-Band LINAC to a flash irradiation mode is in progress, and a preceding study is conducted to evaluate the usefulness of a yeast-based biological phantom manufactured by analyzing the change in oxygen by irradiating a high dose in a general radiation therapy device. MATERIALS/METHODS Freeze-dried yeast sample (Saccharomyces cerevisiae, S288C) is activated and sub-cultured. For mass production of yeast samples, yeast culture medium is prepared by adding yeast colonies to the ypd medium. This study was conducted to verify the hypoxic effect among the biological mechanisms that occur during flash radiation therapy at the basic stage, and the oxygen concentration change during general radiation irradiation was measured in real time using a DO (Dissolved oxygen) meter and fiber optic sensor designed to do that. To prevent scatter, which is a concern during flash irradiation, the fiber form was used, and precise experiments are possible as a non-invasive oxygen concentration measurement method. Based on 10MV of general radiation therapy device, high-dose radiation of 500-10,000 cGy is irradiated to measure real-time oxygen concentration change. RESULTS As a result of irradiation with high-dose (500-10,000 cGy) radiation of general LINAC, it was confirmed that the oxygen concentration of the yeast culture medium decreased by 5.7-63.2%, and the usefulness of the biological phantom fabricated based on the yeast culture medium was evaluated. CONCLUSION Prior to the analysis of oxygen concentration change in yeast cells during X-Band LINAC flash irradiation, a preliminary study was conducted at a high dose in a general LINAC to obtain a significant result of oxygen concentration change and confirm the usefulness of the yeast-based biological phantom. Prior research was conducted and verified as a general irradiation experiment using a yeast-based biological phantom manufactured based on a DO meter and a fiber optic oxygen sensor. After irradiation with high-dose radiation, the oxygen concentration of the yeast culture medium was measured 5 times, and it was confirmed that there was a change in oxygen concentration of 5.7-63.2%, verifying the usefulness and stability of the biological phantom. The usefulness of the yeast-based biological phantom for high doses was confirmed, and it is expected that the usefulness of the biological phantom for flash radiation can be verified by additionally measuring the change in oxygen concentration of the biological phantom according to the high dose rate in the future.
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Affiliation(s)
- C B Park
- Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y N Kang
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - H Jang
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y S Kim
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - B O Choi
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - S H Son
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - J H Song
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - K H Choi
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - Y K Lee
- Department of Radiation Oncology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - W Sung
- Department of Biomedical Engineering and Department of Biomedicine and Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of (South) Korea
| | - J L Kim
- Electro-Medical Device Research Center, Korea Electrotechnology Research Institute, Ansan, Korea, Republic of (South) Korea
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6
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Yao N, Zhang Z, Yu L, Hazarika R, Yu C, Jang H, Smith LM, Ton J, Liu L, Stachowicz JJ, Reusch TBH, Schmitz RJ, Johannes F. An evolutionary epigenetic clock in plants. Science 2023; 381:1440-1445. [PMID: 37769069 DOI: 10.1126/science.adh9443] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/08/2023] [Indexed: 09/30/2023]
Abstract
Molecular clocks are the basis for dating the divergence between lineages over macroevolutionary timescales (~105 to 108 years). However, classical DNA-based clocks tick too slowly to inform us about the recent past. Here, we demonstrate that stochastic DNA methylation changes at a subset of cytosines in plant genomes display a clocklike behavior. This "epimutation clock" is orders of magnitude faster than DNA-based clocks and enables phylogenetic explorations on a scale of years to centuries. We show experimentally that epimutation clocks recapitulate known topologies and branching times of intraspecies phylogenetic trees in the self-fertilizing plant Arabidopsis thaliana and the clonal seagrass Zostera marina, which represent two major modes of plant reproduction. This discovery will open new possibilities for high-resolution temporal studies of plant biodiversity.
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Affiliation(s)
- N Yao
- Department of Genetics, University of Georgia, Athens, GA, USA
| | - Z Zhang
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - L Yu
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - R Hazarika
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - C Yu
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - H Jang
- Department of Genetics, University of Georgia, Athens, GA, USA
| | - L M Smith
- School of Biosciences, University of Sheffield, Sheffield, UK
| | - J Ton
- School of Biosciences, University of Sheffield, Sheffield, UK
| | - L Liu
- Department of Statistics, University of Georgia, Athens, GA, USA
| | - J J Stachowicz
- Department of Evolution and Ecology, University of California, Davis, CA, USA
| | - T B H Reusch
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - R J Schmitz
- Department of Genetics, University of Georgia, Athens, GA, USA
| | - F Johannes
- Plant Epigenomics, Technical University of Munich, Freising, Germany
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7
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Perotti G, Christiaens V, Henning T, Tabone B, Waters LBFM, Kamp I, Olofsson G, Grant SL, Gasman D, Bouwman J, Samland M, Franceschi R, van Dishoeck EF, Schwarz K, Güdel M, Lagage PO, Ray TP, Vandenbussche B, Abergel A, Absil O, Arabhavi AM, Argyriou I, Barrado D, Boccaletti A, Caratti O Garatti A, Geers V, Glauser AM, Justannont K, Lahuis F, Mueller M, Nehmé C, Pantin E, Scheithauer S, Waelkens C, Guadarrama R, Jang H, Kanwar J, Morales-Calderón M, Pawellek N, Rodgers-Lee D, Schreiber J, Colina L, Greve TR, Östlin G, Wright G. Water in the terrestrial planet-forming zone of the PDS 70 disk. Nature 2023; 620:516-520. [PMID: 37488359 PMCID: PMC10432267 DOI: 10.1038/s41586-023-06317-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/13/2023] [Indexed: 07/26/2023]
Abstract
Terrestrial and sub-Neptune planets are expected to form in the inner (less than 10 AU) regions of protoplanetary disks1. Water plays a key role in their formation2-4, although it is yet unclear whether water molecules are formed in situ or transported from the outer disk5,6. So far Spitzer Space Telescope observations have only provided water luminosity upper limits for dust-depleted inner disks7, similar to PDS 70, the first system with direct confirmation of protoplanet presence8,9. Here we report JWST observations of PDS 70, a benchmark target to search for water in a disk hosting a large (approximately 54 AU) planet-carved gap separating an inner and outer disk10,11. Our findings show water in the inner disk of PDS 70. This implies that potential terrestrial planets forming therein have access to a water reservoir. The column densities of water vapour suggest in-situ formation via a reaction sequence involving O, H2 and/or OH, and survival through water self-shielding5. This is also supported by the presence of CO2 emission, another molecule sensitive to ultraviolet photodissociation. Dust shielding, and replenishment of both gas and small dust from the outer disk, may also play a role in sustaining the water reservoir12. Our observations also reveal a strong variability of the mid-infrared spectral energy distribution, pointing to a change of inner disk geometry.
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Affiliation(s)
- G Perotti
- Max Planck Institute for Astronomy, Heidelberg, Germany.
| | | | - Th Henning
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - B Tabone
- Université Paris-Saclay, CNRS, Institut d'Astrophysique Spatiale, Orsay, France
| | - L B F M Waters
- Department of Astrophysics/IMAPP, Radboud University, Nijmegen, the Netherlands
- SRON Netherlands Institute for Space Research, Leiden, the Netherlands
| | - I Kamp
- Kapteyn Astronomical Institute, Rijksuniversiteit Groningen, Groningen, the Netherlands
| | - G Olofsson
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - S L Grant
- Max-Planck Institut für Extraterrestrische Physik (MPE), Garching, Germany
| | - D Gasman
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - J Bouwman
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - M Samland
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - R Franceschi
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - E F van Dishoeck
- Max-Planck Institut für Extraterrestrische Physik (MPE), Garching, Germany
- Leiden Observatory, Leiden University, Leiden, the Netherlands
| | - K Schwarz
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - M Güdel
- Max Planck Institute for Astronomy, Heidelberg, Germany
- Dept. of Astrophysics, University of Vienna, Vienna, Austria
- ETH Zürich, Institute for Particle Physics and Astrophysics, Zürich, Switzerland
| | - P-O Lagage
- Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, Gif-sur-Yvette, France
| | - T P Ray
- Dublin Institute for Advanced Studies, Dublin, Ireland
| | | | - A Abergel
- Université Paris-Saclay, CNRS, Institut d'Astrophysique Spatiale, Orsay, France
| | - O Absil
- STAR Institute, Université de Liège, Liège, Belgium
| | - A M Arabhavi
- Kapteyn Astronomical Institute, Rijksuniversiteit Groningen, Groningen, the Netherlands
| | - I Argyriou
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - D Barrado
- Centro de Astrobiología (CAB), CSIC-INTA, Villanueva de la Cañada, Spain
| | - A Boccaletti
- LESIA, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, Meudon, France
| | - A Caratti O Garatti
- Dublin Institute for Advanced Studies, Dublin, Ireland
- INAF - Osservatorio Astronomico di Capodimonte, Napoli, Italy
| | - V Geers
- UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh, UK
| | - A M Glauser
- ETH Zürich, Institute for Particle Physics and Astrophysics, Zürich, Switzerland
| | - K Justannont
- Chalmers University of Technology, Onsala Space Observatory, Onsala, Sweden
| | - F Lahuis
- SRON Netherlands Institute for Space Research, Groningen, the Netherlands
| | - M Mueller
- Kapteyn Astronomical Institute, Rijksuniversiteit Groningen, Groningen, the Netherlands
| | - C Nehmé
- Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, Gif-sur-Yvette, France
| | - E Pantin
- Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, Gif-sur-Yvette, France
| | - S Scheithauer
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - C Waelkens
- Institute of Astronomy, KU Leuven, Leuven, Belgium
| | - R Guadarrama
- Dept. of Astrophysics, University of Vienna, Vienna, Austria
| | - H Jang
- Department of Astrophysics/IMAPP, Radboud University, Nijmegen, the Netherlands
| | - J Kanwar
- Kapteyn Astronomical Institute, Rijksuniversiteit Groningen, Groningen, the Netherlands
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
- TU Graz, Fakultät für Mathematik, Physik und Geodäsie, Graz, Austria
| | - M Morales-Calderón
- Centro de Astrobiología (CAB), CSIC-INTA, Villanueva de la Cañada, Spain
| | - N Pawellek
- Dept. of Astrophysics, University of Vienna, Vienna, Austria
| | - D Rodgers-Lee
- Dublin Institute for Advanced Studies, Dublin, Ireland
| | - J Schreiber
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - L Colina
- Centro de Astrobiología (CAB, CSIC-INTA), Carretera de Ajalvir, Torrejón de Ardoz, Spain
| | - T R Greve
- DTU Space, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - G Östlin
- Department of Astronomy, Oskar Klein Centre, Stockholm University, Stockholm, Sweden
| | - G Wright
- UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh, UK
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8
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Yao N, Zhang Z, Yu L, Hazarika R, Yu C, Jang H, Smith LM, Ton J, Liu L, Stachowicz J, Reusch T, Schmitz RJ, Johannes F. An evolutionary epigenetic clock in plants. bioRxiv 2023:2023.03.15.532766. [PMID: 36993545 PMCID: PMC10055040 DOI: 10.1101/2023.03.15.532766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Molecular clocks are the basis for dating the divergence between lineages over macro-evolutionary timescales (~10 5 -10 8 years). However, classical DNA-based clocks tick too slowly to inform us about the recent past. Here, we demonstrate that stochastic DNA methylation changes at a subset of cytosines in plant genomes possess a clock-like behavior. This 'epimutation-clock' is orders of magnitude faster than DNA-based clocks and enables phylogenetic explorations on a scale of years to centuries. We show experimentally that epimutation-clocks recapitulate known topologies and branching times of intra-species phylogenetic trees in the selfing plant A. thaliana and the clonal seagrass Z. marina , which represent two major modes of plant reproduction. This discovery will open new possibilities for high-resolution temporal studies of plant biodiversity.
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Affiliation(s)
- N Yao
- Department of Genetics, University of Georgia, Athens, USA
| | - Z Zhang
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - L Yu
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - R Hazarika
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - C Yu
- Plant Epigenomics, Technical University of Munich, Freising, Germany
| | - H Jang
- Department of Genetics, University of Georgia, Athens, USA
| | - L M Smith
- School of Biosciences, University of Sheffield, UK
| | - J Ton
- School of Biosciences, University of Sheffield, UK
| | - L Liu
- Department of Statistics, University of Georgia, Athens, USA
| | - J Stachowicz
- Department of Evolution and Ecology, University of California, Davis, USA
| | - Tbh Reusch
- Marine Evolutionary Ecology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | - R J Schmitz
- Department of Genetics, University of Georgia, Athens, USA
| | - F Johannes
- Plant Epigenomics, Technical University of Munich, Freising, Germany
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9
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Lim JH, Heo J, Park J, Kim S, Jang H. Deep learning model for predicting treatment response for patients with rectal cancer using 3D medical imaging. J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.4_suppl.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
168 Background: We developed a deep learning model to predict pathological response based on magnetic 3D resonance imaging in rectal cancer. Methods: A total of 242 patients with locally advanced rectal cancer who received preoperative chemoradiotherapy followed by surgical resection were collected from single center. Surgical resection was performed at 6 to 8 weeks after the completion of preoperative CRT. Achieving pathogic complete response (pCR) was defined as complete absence of any tumour cells, in both the primary site and the dissected lymph node in surgical specimens. Based on pre-chemoradiotherapy T1-weighted axial 3D MR images, deep learning models were developed to predict pCR, respectively. Results: We analyzed 32,000 MRI images and involved several radiation oncologists in segmenation and classification. To calculate the probability of pCR using various convolutional neural network (CNN) architectures, several deep learning models were developed. The data input to the deep learning model was 3D MRI image, clinical data, and MRI metadata. Among 242 patients, 50 (20.7%) had evidence of pCR. The best model was developed based on SeResNet using transfer learning by MONA framework. The deep learning model showed an area under the receiver operating characteristic curve, sensitivity, specificity, and accuracy of 0.926, 0.831, 0.921, and 90.2% for predicting pCR. Conclusions: The pre-chemoradiotherapy T1-weighted 3D MR image-based deep learning model showed acceptable performance in predicting pCR in patients with rectal cancer.[Table: see text]
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Affiliation(s)
- June Hyuck Lim
- Department of Radiation Oncology, Ajou University School of Medicine, Suwon, South Korea
| | | | - Jeongmin Park
- Department of Convergence Healthcare Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - Seonhwa Kim
- Department of Convergence Healthcare Medicine, Ajou University School of Medicine, Suwon, South Korea
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10
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Nguyen MCT, Nguyen HQ, Jang H, Noh S, Sohn Y, Yee K, Jung H, Kim J. Effective inactivation of Bacillus atrophaeus spores and Escherichia coli on disposable face masks using ultraviolet laser irradiation. J Anal Sci Technol 2022; 13:23. [PMID: 35789562 PMCID: PMC9243834 DOI: 10.1186/s40543-022-00332-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/20/2022] [Indexed: 11/28/2022] Open
Abstract
Due to the widespread emergence of COVID-19, face masks have become a common tool for reducing transmission risk between people, increasing the need for sterilization methods against mask-contaminated microorganisms. In this study, we measured the efficacy of ultraviolet (UV) laser irradiation (266 nm) as a sterilization technique against Bacillus atrophaeus spores and Escherichia coli on three different types of face mask. The UV laser source demonstrated high penetration of inner mask layers, inactivating microorganisms in a short time while maintaining the particle filtration efficiency of the masks. This study demonstrates that UV laser irradiation is an efficient sterilization method for removing pathogens from face masks.
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11
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Jang H, Song Y, Seok Y, Im H, Kim TH, Lee JH, Kim YH, Lee K. Zero power infrared sensing in 2D/3D-assembled heterogeneous graphene/In/InSe/Au. Nanoscale 2022; 14:3004-3012. [PMID: 35170602 DOI: 10.1039/d1nr07884d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Low- or self-powered infrared sensors can be used in a broad range of applications, including networking mobile edge devices and image recognition for autonomous driving technology. Here, we show state-of-the-art self-powered near-infrared (NIR) sensors using graphene/In/InSe/Au as a photoactive region. The self-powered NIR sensors show outstanding performance, achieving a photoresponsivity of ∼8.5 A W-1 and a detectivity of ∼1012 Jones at 850 nm light. Multiple self-powered InSe photodetectors with different device structures and contacts were systematically investigated. In particular, the asymmetrically assembled graphene/In/InSe/Au vertical heterostructure offers a high built-in field, which gives rise to efficient electron-hole pair separation and transit time that is shorter than the photocarrier lifetime. The built-in potential across the InSe was estimated using the Schottky barrier height at each metal contact with InSe, obtained using density functional theory calculations. We also demonstrate InSe vertical field-effect transistors and provide an out-of-plane carrier mobility of InSe. Using the out-of-plane mobility and structural parameters of each device, the built-in field, drift velocity, and corresponding transit time are estimated.
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Affiliation(s)
- Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Yumin Song
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Yongwook Seok
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Heungsoon Im
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Tae Hyung Kim
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Joo-Hyoung Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Yong-Hoon Kim
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Kayoung Lee
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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12
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Alkhars N, Zeng Y, Alomeir N, Al Jallad N, Wu T, Aboelmagd S, Youssef M, Jang H, Fogarty C, Xiao J. Oral Candida Predicts Streptococcus mutans Emergence in Underserved US Infants. J Dent Res 2022; 101:54-62. [PMID: 34018817 PMCID: PMC8721728 DOI: 10.1177/00220345211012385] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [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: 01/03/2023] Open
Abstract
Despite the cariogenic role of Candida suggested from recent studies, oral Candida acquisition in children at high risk for early childhood caries (ECC) and its association with cariogenic bacteria Streptococcus mutans remain unclear. Although ECC disproportionately afflicts socioeconomically disadvantaged and racial-minority children, microbiological studies focusing on the underserved group are scarce. Our prospective cohort study examined the oral colonization of Candida and S. mutans among 101 infants exclusively from a low-income and racial-minority background in the first year of life. The Cox hazard proportional model was fitted to assess factors associated with the time to event of the emergence of oral Candida and S. mutans. Oral Candida colonization started as early as 1 wk among 13% of infants, increased to 40% by 2 mo, escalated to 48% by 6 mo, and remained the same level until 12 mo. S. mutans in saliva was detected among 20% infants by 12 mo. The emergence of S. mutans by year 1 was 3.5 times higher (hazard ratio [HR], 3.5; confidence interval [CI], 1.1-11.3) in infants who had early colonization of oral Candida compared to those who were free of oral Candida (P = 0.04) and 3 times higher (HR, 3.0; CI, 1.3-6.9) among infants whose mother had more than 3 decayed teeth (P = 0.01), even after adjusting demographics, feeding, mother's education, and employment status. Infants' salivary S. mutans abundance was positively correlated with infants' Candida albicans (P < 0.01) and Candida krusei levels (P < 0.05). Infants' oral colonization of C. albicans was positively associated with mother's oral C. albicans carriage and education (P < 0.01) but negatively associated with mother's employment status (P = 0.01). Future studies are warranted to examine whether oral Candida modulates the oral bacterial community as a whole to become cariogenic during the onset and progression of ECC, which could lead to developing novel ECC predictive and preventive strategies from a fungal perspective.
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Affiliation(s)
- N. Alkhars
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Y. Zeng
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA,Department of Forensic Medicine, North Sichuan Medical College, Nanchong, Sichuan, China
| | - N. Alomeir
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - N. Al Jallad
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - T.T. Wu
- Department of Biostatistics and computational biology, University of Rochester Medical Center, Rochester, NY, USA
| | - S. Aboelmagd
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - M. Youssef
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - H. Jang
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - C. Fogarty
- Department of Family Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - J. Xiao
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA,J. Xiao, Eastman Institute for Oral Health, University of Rochester, 625 Elmwood Ave, Rochester, NY 14620, USA.
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13
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Nguyen MCT, Nguyen HQ, Jang H, Noh S, Lee SY, Jang KS, Lee J, Sohn Y, Yee K, Jung H, Kim J. Sterilization effects of UV laser irradiation on Bacillus atrophaeus spore viability, structure, and proteins. Analyst 2021; 146:7682-7692. [PMID: 34812439 DOI: 10.1039/d1an01717a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Bacillus spores are highly resistant to toxic chemicals and extreme environments. Because some Bacillus species threaten public health, spore inactivation techniques have been intensively investigated. We exposed Bacillus atrophaeus spores to a 266 nm Nd:YVO4 laser at a laser power of 1 W and various numbers of scans. As a result, the UV laser reduced the viability of Bacillus atrophaeus spores. Although the outer coat of spores remained intact after UV laser irradiation of 720 scans, damage inside the spores was observed. Spore proteins were identified by matrix-assisted laser desorption/ionization Fourier transform ion cyclotron resonance mass spectrometry during the course of UV laser irradiation. Photochemical and photothermal processes are believed to be involved in the UV laser sterilization of Bacillus spores. Our findings suggest that a UV laser is capable of sterilizing Bacillus atrophaeus spores.
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Affiliation(s)
- My-Chi Thi Nguyen
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Huu-Quang Nguyen
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Hanbyeol Jang
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Sojung Noh
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seong-Yeon Lee
- Department of Physics and Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kyoung-Soon Jang
- Biomedical Omics Center, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jaebeom Lee
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Youngku Sohn
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kiju Yee
- Department of Physics and Institute of Quantum Systems, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Heesoo Jung
- Chem-Bio Technology Center, Agency for Defense Development (ADD), Yuseong P.O. Box 35, Daejeon, 34186, Republic of Korea.
| | - Jeongkwon Kim
- Department of Chemistry, Chungnam National University, Daejeon, 34134, Republic of Korea.,Graduate School of New Drug Discovery and Development, Chungnam National University, Daejeon, Republic of Korea.
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14
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Jang H, Choi Y, Kwon E, Choi N, Jang Y, Song J, Shin S. Optimal application of compressive palatal stents following mesiodens removal in pediatric patients: A Randomized Controlled Trial. Med Oral Patol Oral Cir Bucal 2021; 26:e808-e814. [PMID: 34704974 PMCID: PMC8601646 DOI: 10.4317/medoral.24802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022] Open
Abstract
Background There is no scientific evidence supporting the choice of a palatal stent in patients who underwent removal of an impacted supernumerary tooth. We aimed to investigate the effects of palatal stents in patients who underwent supernumerary tooth removal through a palatal approach and to suggest the optimal stent thickness and material. Material and Methods We recruited 144 patients who underwent extraction of a supernumerary tooth between the maxillary anterior teeth. Subjects were assigned to a control group (CG) or one of four compressive palatal stent groups (CPSGs) classified by the thickness and material of the thermoplastic acrylic stent used. Palatal gingival swelling and objective indices (healing, oral hygiene, gingival, and plaque) were evaluated before surgery and on postoperative days (PODs) 3, 7, and 14; pain/discomfort and the Child Oral Health Impact Profile (COHIP) were assessed as subjective indices of the effects of the stent. Results The CPSGs showed faster healing than did the CG on PODs 7 (P<0.001) and 14 (P=0.043); swelling was measured by 1.64±0.88 mm and 4.52±0.39 mm, respectively. Although swelling was least in the 4-mm hard group (0.92±0.33 mm), the difference compared with that in the 2-mm hard group (1.01±0.18 mm) was not significant (P=0.077). The CPSGs showed better COHIP (P<0.001-0.036) and pain scores (P<0.001) than did the CG on PODs 1-3. Conclusions Compressive palatal stents reduce discomfort by decreasing pain and alleviating swelling. Although a stent is effective regardless of its thickness and material, 2-mm hard stents maximized such positive effects with minimal discomfort. Key words:Supernumerary tooth, tooth Extraction, postoperative care, oral Health, pediatric dentistry.
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Affiliation(s)
- H Jang
- Department of Oral and Maxillofacial surgery, Pusan National University, School of Dentistry, Korea Dental and Life Science Institute, School of Dentistry, Pusan National University, Korea Beomeo, Mulgeum, Yangsan, 50612, Republic of Korea
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15
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Hong J, Jang H, Choi B, Kang Y, Song J. Comparison of the Kinetics of Hematologic Recovery in Aplastic Anemia After Total Nodal Irradiation Between Helical Tomotherapy and Conventional Radiotherapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Pivot X, Burian O, Bazan F, Wojtukiewicz M, Jang H, Kim S, Lee J, Yoon Y. 154P Five-year follow-up of the phase III study comparing SB3 (trastuzumab biosimilar) and reference trastuzumab in patients with HER2 positive early or locally advanced breast cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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17
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Haque R, Kim Y, Park K, Jang H, Kim SY, Lee H, Kim HJ. Altered distributions in circulating follicular helper and follicular regulatory T cells accountable for imbalanced cytokine production in multiple sclerosis. Clin Exp Immunol 2021; 205:75-88. [PMID: 33759187 PMCID: PMC8209573 DOI: 10.1111/cei.13596] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 03/11/2021] [Accepted: 03/16/2021] [Indexed: 12/15/2022] Open
Abstract
Follicular T helper (Tfh) and regulatory (Tfr) cells are distinct subsets of CD4+ T lymphocytes, regulating humoral immune responses in the germinal center. It is widely accepted that dysregulated Tfh and Tfr cells are associated with autoimmunity. In this study, we evaluated the frequencies of circulating chemokine receptor (CXCR)5+ programmed cell death 1 (PD-1+ ) Tfh (cTfh) and CXCR5+ PD-1+ forkhead box protein 3 (FoxP3+ ) CD25+ Tfr (cTfr) cells, and their corresponding cytokines from the peripheral blood mononuclear cells of 28 patients with relapsing-remitting multiple sclerosis (MS) and 16 age- and sex-matched healthy controls (HC). Subsets of cTfh cells by Th1- and Th17-related surface markers (CXCR3 and CCR6) were also evaluated. We found that the frequency of cTfh cells was significantly higher in MS patients compared to that of HC. Conversely, the frequency of cTfr cells was lower in MS patients than that of HC. Interleukin (IL)-21-producing cTfh cells were significantly increased in MS patients, while IL-10-secreting cTfr cells were lower in MS patients compared to levels in HC. Among cTfh cells, cTfh17.1 cells were the major subtypes that were significantly increased in MS patients compared to HC, with the frequency of IL-21-secreting cells being the highest. These results suggest that an imbalanced distribution of cTfh and cTfr exist in MS patients, which contributes to the reciprocally altered IL-21 and IL-10 production.
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Affiliation(s)
- R. Haque
- Department of Cancer Biomedical ScienceGraduate School of Cancer Science and PolicyNational Cancer CenterGoyangSouth Korea
- Department of NeurologyNational Cancer CenterGoyangSouth Korea
- Division of Clinical ResearchNational Cancer CenterGoyangSouth Korea
| | - Y. Kim
- Department of NeurologyNational Cancer CenterGoyangSouth Korea
- Division of Clinical ResearchNational Cancer CenterGoyangSouth Korea
| | - K. Park
- Division of Clinical ResearchNational Cancer CenterGoyangSouth Korea
| | - H. Jang
- Department of NeurologyNational Cancer CenterGoyangSouth Korea
| | - S. Y. Kim
- Department of NeurologyNational Cancer CenterGoyangSouth Korea
- Division of Clinical ResearchNational Cancer CenterGoyangSouth Korea
| | - H. Lee
- Department of Cancer Biomedical ScienceGraduate School of Cancer Science and PolicyNational Cancer CenterGoyangSouth Korea
| | - H. J. Kim
- Department of Cancer Biomedical ScienceGraduate School of Cancer Science and PolicyNational Cancer CenterGoyangSouth Korea
- Department of NeurologyNational Cancer CenterGoyangSouth Korea
- Division of Clinical ResearchNational Cancer CenterGoyangSouth Korea
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18
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Jang H, Ma YJ, Chang EY, Fazeli S, Lee RR, Lombardi AF, Bydder GM, Corey-Bloom J, Du J. Inversion Recovery Ultrashort TE MR Imaging of Myelin is Significantly Correlated with Disability in Patients with Multiple Sclerosis. AJNR Am J Neuroradiol 2021; 42:868-874. [PMID: 33602747 DOI: 10.3174/ajnr.a7006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 11/16/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND PURPOSE MR imaging has been widely used for the noninvasive evaluation of MS. Although clinical MR imaging sequences are highly effective in showing focal macroscopic tissue abnormalities in the brains of patients with MS, they are not specific to myelin and correlate poorly with disability. We investigated direct imaging of myelin using a 2D adiabatic inversion recovery ultrashort TE sequence to determine its value in assessing disability in MS. MATERIALS AND METHODS The 2D inversion recovery ultrashort TE sequence was evaluated in 14 healthy volunteers and 31 patients with MS. MPRAGE and T2-FLAIR images were acquired for comparison. Advanced Normalization Tools were used to correlate inversion recovery ultrashort TE, MPRAGE, and T2-FLAIR images with disability assessed by the Expanded Disability Status Scale. RESULTS Weak correlations were observed between normal-appearing white matter volume (R = -0.03, P = .88), lesion load (R = 0.22, P = .24), and age (R = 0.14, P = .44), and disability. The MPRAGE signal in normal-appearing white matter showed a weak correlation with age (R = -0.10, P = .49) and disability (R = -0.19, P = .31). The T2-FLAIR signal in normal-appearing white matter showed a weak correlation with age (R = 0.01, P = .93) and disability (R = 0.13, P = .49). The inversion recovery ultrashort TE signal was significantly negatively correlated with age (R = -0.38, P = .009) and disability (R = -0.44; P = .01). CONCLUSIONS Direct imaging of myelin correlates with disability in patients with MS better than indirect imaging of long-T2 water in WM using conventional clinical sequences.
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Affiliation(s)
- H Jang
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
| | - Y-J Ma
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
| | - E Y Chang
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
- Radiology Service (E.Y.C., R.R.L.), VA San Diego Healthcare System, San Diego, California
| | - S Fazeli
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
| | - R R Lee
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
- Radiology Service (E.Y.C., R.R.L.), VA San Diego Healthcare System, San Diego, California
| | - A F Lombardi
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
| | - G M Bydder
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
| | - J Corey-Bloom
- Department of Neurosciences (J.C.-B.), University of California San Diego, San Diego, California
| | - J Du
- From the Department of Radiology (H.J., Y.-J.M., E.Y.C., S.F., R.R.L., A.F.L., G.M.B., J.D.), University of California San Diego, San Diego, California
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Cho SH, Jang H, Im H, Lee D, Lee JH, Watanabe K, Taniguchi T, Seong MJ, Lee BH, Lee K. Bias-controlled multi-functional transport properties of InSe/BP van der Waals heterostructures. Sci Rep 2021; 11:7843. [PMID: 33846520 PMCID: PMC8041794 DOI: 10.1038/s41598-021-87442-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/25/2021] [Indexed: 11/09/2022] Open
Abstract
Van der Waals (vdW) heterostructures, consisting of a variety of low-dimensional materials, have great potential use in the design of a wide range of functional devices thanks to their atomically thin body and strong electrostatic tunability. Here, we demonstrate multi-functional indium selenide (InSe)/black phosphorous (BP) heterostructures encapsulated by hexagonal boron nitride. At a positive drain bias (VD), applied on the BP while the InSe is grounded, our heterostructures show an intermediate gate voltage (VBG) regime where the current hardly changes, working as a ternary transistor. By contrast, at a negative VD, the device shows strong negative differential transconductance characteristics; the peak current increases up to ~5 μA and the peak-to-valley current ratio reaches 1600 at VD = −2 V. Four-terminal measurements were performed on each layer, allowing us to separate the contributions of contact resistances and channel resistance. Moreover, multiple devices with different device structures and contacts were investigated, providing insight into the operation principle and performance optimization. We systematically investigated the influence of contact resistances, heterojunction resistance, channel resistance, and the thickness of BP on the detailed operational characteristics at different VD and VBG regimes.
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Affiliation(s)
- Sang-Hoo Cho
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Heungsoon Im
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Donghyeon Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Je-Ho Lee
- Department of Physics, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Kenji Watanabe
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Takashi Taniguchi
- National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Maeng-Je Seong
- Department of Physics, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Byoung Hun Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea.,Center for Semiconductor Technology Convergence (CSTC), Electrical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Kayoung Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, Republic of Korea. .,School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
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Azar I, Austin A, Jang H, Kim S, Yazpandaneh O, Chopra A, Mehdi S, Mamdani H. MA12.05 Is there a Role for Surgery in Stage I Small Cell Lung Cancer? A National VA Database Analysis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Song J, Choi K, Park E, Kim Y, Kang Y, Choi B, Jang H. Analysis of PET Parameters to Predict Response to Radiotherapy in Myeloid Sarcoma. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Chee SS, Jang H, Lee K, Ham MH. Substitutional Fluorine Doping of Large-Area Molybdenum Disulfide Monolayer Films for Flexible Inverter Device Arrays. ACS Appl Mater Interfaces 2020; 12:31804-31809. [PMID: 32559366 DOI: 10.1021/acsami.0c07824] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Reliable and controllable doping of transition metal dichalcogenides (TMDCs) is a mandatory requirement for practical large-scale electronic applications. However, most of the literature on the doping methodologies of TMDCs has focused on n-type doping and multilayer TMDC rather than a monolayer one enabling large-scale growth. Herein, we report substitutional fluorine doping of a chemical vapor deposition (CVD)-grown molybdenum disulfide (MoS2) monolayer film using a delicate SF6 plasma treatment. Our SF6-treated MoS2 monolayer shows a p-type doping effect with fluorine substitution. The doping concentration is controlled by the plasma treatment time (2-4.9 atom %) while maintaining the structural integrity of the MoS2 monolayer. Such reliable and tunable substitutional doping is attributed to preventing direct ion bombardment to the MoS2 monolayer by our gentle plasma treatment system. Finally, we fabricated MoS2 homojunction flexible inverter device arrays based on the pristine and SF6-treated MoS2 monolayer. A clear switching behavior is observed, and the voltage gain is approximately 8 at an applied VDD of 2 V, which is comparable to that of CVD-grown MoS2-based inverter devices reported previously. Obtained voltage gain is also stable even after 500 bending cycles at an applied strain of 0.5%.
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Affiliation(s)
- Sang-Soo Chee
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Kayoung Lee
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Moon-Ho Ham
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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Nam H, Kim J, Woo S, Park S, Lee H, Jang H, Park† K, Suh† S. 0971 Mother’s Parenting Style As A Moderator In The Relationship Between Temperament And Sleep Problems In Children With Obesity. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Based on past studies, a child’s temperament and parenting style greatly affect a child’s sleep. However, there are limited studies that have investigated how parenting styles and a child’s temperament interact and affect the child’s sleep in obese children. Thus, this study investigated parenting styles as a moderator in the relationship between temperament and sleep in obese children.
Methods
Seventy-seven obese children (male=66.2%, average BMI = 27.35±2.78) participated in the study. The mean age of the participants was 10.82(± 1.00) years. The primary caregiver (mother) of the participants completed the Junior Temperament and Character Inventory (J-TCI), and Parents as Social Context Questionnaire (K-PSCQ), and Children’s Sleep Habits Questionnaire (CSHQ). Among the different subscales, only Novelty Seeking (NS) and Reward Dependence (RD) were used for analysis among Junior Temperament and Character Inventory (J-TCI) components.
Results
In this sample, 66 children (85.7%) reported significant levels of sleep problems based on the CSHQ. Novelty seeking (NS) and reward dependence (RD) significantly predicted sleep problems (B=-.771, p<.05, B=-.683, p<.01). Additionally, mother’s negative parenting style moderated the relationship between NS and the child’s sleep problem [B=.03, 95% CI=.007, .049] and the relationship between RD and the child’s sleep problem [B=.031, 95% CI=.013, .049]. The more negative mother’s parenting style, the higher the child’s NS or RD scores had a negative effect on sleep.
Conclusion
The results of this study show that obese children experience high levels of sleep disturbance. Additionally, the mother’s negative parenting style moderated the relationship between temperament and sleep problems in obese children. The results suggest that sleep interventions for obese children should include the mother, especially in children with high novelty seeking and reward dependence.
Support
This work was supported by Korea Centers for Disease Control and Prevention & Korea National Research Institute of Health (2019020660E-00)
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Affiliation(s)
- H Nam
- SUNGSHIN WOMEN’S UNIVERSITY, Seoul, KOREA, REPUBLIC OF
| | - J Kim
- SUNGSHIN WOMEN’S UNIVERSITY, Seoul, KOREA, REPUBLIC OF
| | - S Woo
- Department of Medical Science, Hallym University School of Medicine, Chuncheon, KOREA, REPUBLIC OF
| | - S Park
- Center for Biomedical Sciences, Korea National Institute of Health, Cheongju, Chungbuk, KOREA, REPUBLIC OF
| | - H Lee
- Center for Biomedical Sciences, Korea National Institute of Health, Cheongju, Chungbuk, KOREA, REPUBLIC OF
| | - H Jang
- Center for Biomedical Sciences, Korea National Institute of Health, Cheongju, Chungbuk, KOREA, REPUBLIC OF
| | - K Park†
- Department of Family Medicine, Hallym University Sacred Heart Hospital, Hallym University School of Medicine, Anayng, KOREA, REPUBLIC OF
| | - S Suh†
- SUNGSHIN WOMEN’S UNIVERSITY, Seoul, KOREA, REPUBLIC OF
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Kim S, Huh S, Jang H, Park NY, Kim Y, Jung JY, Lee MY, Hyun J, Kim HJ. Outcome of pregnancies after onset of the neuromyelitis optica spectrum disorder. Eur J Neurol 2020; 27:1546-1555. [DOI: 10.1111/ene.14274] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/17/2020] [Indexed: 01/05/2023]
Affiliation(s)
- S.‐H. Kim
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - S.‐Y. Huh
- Department of Neurology Kosin University College of Medicine Busan Korea
| | - H. Jang
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - N. Y. Park
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - Y. Kim
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - J. Y. Jung
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - M. Y. Lee
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - J.‐W. Hyun
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
| | - H. J. Kim
- Department of Neurology Research Institute and Hospital of National Cancer Center Goyang‐si Korea
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Ha J, Cho YS, Kim SJ, Cho SH, Kim JP, Jung YH, Jang H, Shin H, Lin FR, Na DL, Seo SW, Moon IJ, Kim HJ. Hearing loss is associated with cortical thinning in cognitively normal older adults. Eur J Neurol 2020; 27:1003-1009. [DOI: 10.1111/ene.14195] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 02/27/2020] [Indexed: 11/30/2022]
Affiliation(s)
- J. Ha
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
| | - Y. S. Cho
- Department of Otolaryngology – Head and Neck Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
| | - S. J. Kim
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Neurology Gyeongsang National University School of Medicine and Gyeongsang National University Changwon Hospital ChangwonKorea
| | - S. H. Cho
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Neurology Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea
| | - J. P. Kim
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
| | - Y. H. Jung
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Neurology Myongji Hospital Hanyang University GoyangKorea
| | - H. Jang
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
| | - H.‐Y. Shin
- Center for Health Promotion Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
| | - F. R. Lin
- Departments of Otolaryngology, Medicine, Mental Health, and Epidemiology Johns Hopkins University Baltimore MD USA
| | - D. L. Na
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Health Sciences and Technology SAIHST Sungkyunkwan University SeoulKorea
- Stem cell & Regenerative Medicine Institute Samsung Medical Center SeoulKorea
| | - S. W. Seo
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Clinical Research Design & Evaluation SAIHST Sungkyunkwan University SeoulKorea
| | - I. J. Moon
- Department of Otolaryngology – Head and Neck Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
| | - H. J. Kim
- Department of Neurology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea
- Samsung Alzheimer Research Center Samsung Medical Center Seoul Korea
- Neuroscience Center Samsung Medical Center Seoul Korea
- Department of Health Sciences and Technology SAIHST Sungkyunkwan University SeoulKorea
- Department of Digital Health SAIHST Sungkyunkwan University Seoul Korea
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Beydoun H, Kim H, Mittal S, Kim S, Jang H, Dominello M. Risk of Leptomeningeal Carcinomatosis after Post-Operative Gamma Knife Radiosurgery for Resected Brain Metastases. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Hyder J, Jang H, Kim S, Trinh H, Chen J, Flowers J, Vaishampayan N, Winer I, Miller S. Prognostic Value of Changes in Neutrophil-To-Lymphocyte Ratio (NLR), Platelet-To-Lymphocyte Ratio (PLR) and Lymphocyte-To-Monocyte Ratio (LMR) for Patients with Cervical Cancer Undergoing Definitive Chemoradiotherapy (dCRT). Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Wen JJ, Huang H, Lee SJ, Jang H, Knight J, Lee YS, Fujita M, Suzuki KM, Asano S, Kivelson SA, Kao CC, Lee JS. Observation of two types of charge-density-wave orders in superconducting La 2-xSr xCuO 4. Nat Commun 2019; 10:3269. [PMID: 31332190 PMCID: PMC6646325 DOI: 10.1038/s41467-019-11167-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/13/2019] [Indexed: 11/26/2022] Open
Abstract
The discovery of charge- and spin-density-wave (CDW/SDW) orders in superconducting cuprates has altered our perspective on the nature of high-temperature superconductivity (SC). However, it has proven difficult to fully elucidate the relationship between the density wave orders and SC. Here, using resonant soft X-ray scattering, we study the archetypal cuprate La2-xSrxCuO4 (LSCO) over a broad doping range. We reveal the existence of two types of CDW orders in LSCO, namely CDW stripe order and CDW short-range order (SRO). While the CDW-SRO is suppressed by SC, it is partially transformed into the CDW stripe order with developing SDW stripe order near the superconducting Tc. These findings indicate that the stripe orders and SC are inhomogeneously distributed in the superconducting CuO2 planes of LSCO. This further suggests a new perspective on the putative pair-density-wave order that coexists with SC, SDW, and CDW orders. To fully elucidate the relationship between density wave orders and superconductivity in high-Tc cuprates remains difficult. Here, the authors reveal two types of charge-density-wave orders and their intertwined relationship with spin-density-wave order and superconductivity in La2-xSrxCuO4.
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Affiliation(s)
- J-J Wen
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA
| | - H Huang
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA
| | - S-J Lee
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA
| | - H Jang
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA.,PAL-XFEL, Pohang Accelerator Laboratory, Gyeongbuk, 37673, South Korea
| | - J Knight
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA
| | - Y S Lee
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA.,Department of Applied Physics, Stanford University, Stanford, CA, 94305, USA
| | - M Fujita
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - K M Suzuki
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - S Asano
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
| | - S A Kivelson
- Departments of Physics, Stanford University, Stanford, CA, 94305, USA
| | - C-C Kao
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA
| | - J-S Lee
- SLAC National Accelerator Laboratory, Menlo Park, California, 94025, USA.
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29
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Wright S, Groves L, Jang H, Valle F, Mak S. Right Ventricular Dysfunction and Pulmonary Vascular Elastance Coupling in Candidates for Advanced Heart Failure Therapies. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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30
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Chee SS, Seo D, Kim H, Jang H, Lee S, Moon SP, Lee KH, Kim SW, Choi H, Ham MH. Lowering the Schottky Barrier Height by Graphene/Ag Electrodes for High-Mobility MoS 2 Field-Effect Transistors. Adv Mater 2019; 31:e1804422. [PMID: 30411825 DOI: 10.1002/adma.201804422] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 10/05/2018] [Indexed: 06/08/2023]
Abstract
2D transition metal dichalcogenides (TMDCs) have emerged as promising candidates for post-silicon nanoelectronics owing to their unique and outstanding semiconducting properties. However, contact engineering for these materials to create high-performance devices while adapting for large-area fabrication is still in its nascent stages. In this study, graphene/Ag contacts are introduced into MoS2 devices, for which a graphene film synthesized by chemical vapor deposition (CVD) is inserted between a CVD-grown MoS2 film and a Ag electrode as an interfacial layer. The MoS2 field-effect transistors with graphene/Ag contacts show improved electrical and photoelectrical properties, achieving a field-effect mobility of 35 cm2 V-1 s-1 , an on/off current ratio of 4 × 108 , and a photoresponsivity of 2160 A W-1 , compared to those of devices with conventional Ti/Au contacts. These improvements are attributed to the low work function of Ag and the tunability of graphene Fermi level; the n-doping of Ag in graphene decreases its Fermi level, thereby reducing the Schottky barrier height and contact resistance between the MoS2 and electrodes. This demonstration of contact interface engineering with CVD-grown MoS2 and graphene is a key step toward the practical application of atomically thin TMDC-based devices with low-resistance contacts for high-performance large-area electronics and optoelectronics.
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Affiliation(s)
- Sang-Soo Chee
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Dongpyo Seo
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Hanggyu Kim
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Seungmin Lee
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Seung Pil Moon
- KEPCO Research Institute, Korea Electric Power Corporation, Naju, 58214, Republic of Korea
| | - Kyu Hyoung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sung Wng Kim
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Hyunyong Choi
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Moon-Ho Ham
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju, 61005, Republic of Korea
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Adamczyk L, Adkins JK, Agakishiev G, Aggarwal MM, Ahammed Z, Alekseev I, Alford J, Anson CD, Aparin A, Arkhipkin D, Aschenauer EC, Averichev GS, Banerjee A, Beavis DR, Bellwied R, Bhasin A, Bhati AK, Bhattarai P, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Brandin AV, Brovko SG, Bültmann S, Bunzarov I, Burton TP, Butterworth J, Caines H, Calderón de la Barca Sánchez M, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chang Z, Chattopadhyay S, Chen HF, Chen JH, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chwastowski J, Codrington MJM, Contin G, Cramer JG, Crawford HJ, Cui X, Das S, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, Derradi de Souza R, Dhamija S, di Ruzza B, Didenko L, Dilks C, Ding F, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunkelberger LE, Dunlop JC, Efimov LG, Engelage J, Engle KS, Eppley G, Eun L, Evdokimov O, Eyser O, Fatemi R, Fazio S, Fedorisin J, Filip P, Finch E, Fisyak Y, Flores CE, Gagliardi CA, Gangadharan DR, Garand D, Geurts F, Gibson A, Girard M, Gliske S, Greiner L, Grosnick D, Gunarathne DS, Guo Y, Gupta A, Gupta S, Guryn W, Haag B, Hamed A, Han LX, Haque R, Harris JW, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Horvat S, Huang B, Huang HZ, Huang X, Huck P, Humanic TJ, Igo G, Jacobs WW, Jang H, Judd EG, Kabana S, Kalinkin D, Kang K, Kauder K, Ke HW, Keane D, Kechechyan A, Kesich A, Khan ZH, Kikola DP, Kisel I, Kisiel A, Koetke DD, Kollegger T, Konzer J, Koralt I, Kotchenda L, Kraishan AF, Kravtsov P, Krueger K, Kulakov I, Kumar L, Kycia RA, Lamont MAC, Landgraf JM, Landry KD, Lauret J, Lebedev A, Lednicky R, Lee JH, LeVine MJ, Li C, Li W, Li X, Li X, Li Y, Li ZM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Lomnitz M, Longacre RS, Luo X, Ma GL, Ma YG, Madagodagettige Don DMMD, Mahapatra DP, Majka R, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Minaev NG, Mioduszewski S, Mohanty B, Mondal MM, Morozov DA, Mustafa MK, Nandi BK, Nasim M, Nayak TK, Nelson JM, Nigmatkulov G, Nogach LV, Noh SY, Novak J, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Olvitt DL, Pachr M, Page BS, Pal SK, Pan YX, Pandit Y, Panebratsev Y, Pawlak T, Pawlik B, Pei H, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Poljak N, Porter J, Poskanzer AM, Pruthi NK, Przybycien M, Pujahari PR, Putschke J, Qiu H, Quintero A, Ramachandran S, Raniwala R, Raniwala S, Ray RL, Riley CK, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ross JF, Roy A, Ruan L, Rusnak J, Rusnakova O, Sahoo NR, Sahu PK, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmidke WB, Schmitz N, Seger J, Seyboth P, Shah N, Shahaliev E, Shanmuganathan PV, Shao M, Sharma B, Shen WQ, Shi SS, Shou QY, Sichtermann EP, Singaraju RN, Skoby MJ, Smirnov D, Smirnov N, Solanki D, Sorensen P, Spinka HM, Srivastava B, Stanislaus TDS, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Sumbera M, Sun X, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJM, Szelezniak MA, Takahashi J, Tang AH, Tang Z, Tarnowsky T, Thomas JH, Timmins AR, Tlusty D, Tokarev M, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Turnau J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vandenbroucke M, Vanfossen JA, Varma R, Vasconcelos GMS, Vasiliev AN, Vertesi R, Videbæk F, Viyogi YP, Vokal S, Vossen A, Wada M, Wang F, Wang G, Wang H, Wang JS, Wang XL, Wang Y, Wang Y, Webb G, Webb JC, Westfall GD, Wieman H, Wissink SW, Witt R, Wu YF, Xiao Z, Xie W, Xin K, Xu H, Xu J, Xu N, Xu QH, Xu Y, Xu Z, Yan W, Yang C, Yang Y, Yang Y, Ye Z, Yepes P, Yi L, Yip K, Yoo IK, Yu N, Zawisza Y, Zbroszczyk H, Zha W, Zhang JB, Zhang JL, Zhang S, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, Zoulkarneeva Y, Zyzak M. Erratum: Observation of D^{0} Meson Nuclear Modifications in Au+Au Collisions at sqrt[s_{NN}]=200 GeV [Phys. Rev. Lett. 113, 142301 (2014)]. Phys Rev Lett 2018; 121:229901. [PMID: 30547623 DOI: 10.1103/physrevlett.121.229901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Indexed: 06/09/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.113.142301.
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Steklov M, Pandolfi S, Baietti MF, Batiuk A, Carai P, Najm P, Zhang M, Jang H, Renzi F, Cai Y, Abbasi Asbagh L, Pastor T, De Troyer M, Simicek M, Radaelli E, Brems H, Legius E, Tavernier J, Gevaert K, Impens F, Messiaen L, Nussinov R, Heymans S, Eyckerman S, Sablina AA. Mutations in LZTR1 drive human disease by dysregulating RAS ubiquitination. Science 2018; 362:1177-1182. [PMID: 30442762 DOI: 10.1126/science.aap7607] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 05/31/2018] [Accepted: 10/30/2018] [Indexed: 12/15/2022]
Abstract
The leucine zipper-like transcriptional regulator 1 (LZTR1) protein, an adaptor for cullin 3 (CUL3) ubiquitin ligase complex, is implicated in human disease, yet its mechanism of action remains unknown. We found that Lztr1 haploinsufficiency in mice recapitulates Noonan syndrome phenotypes, whereas LZTR1 loss in Schwann cells drives dedifferentiation and proliferation. By trapping LZTR1 complexes from intact mammalian cells, we identified the guanosine triphosphatase RAS as a substrate for the LZTR1-CUL3 complex. Ubiquitome analysis showed that loss of Lztr1 abrogated Ras ubiquitination at lysine-170. LZTR1-mediated ubiquitination inhibited RAS signaling by attenuating its association with the membrane. Disease-associated LZTR1 mutations disrupted either LZTR1-CUL3 complex formation or its interaction with RAS proteins. RAS regulation by LZTR1-mediated ubiquitination provides an explanation for the role of LZTR1 in human disease.
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Affiliation(s)
- M Steklov
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - S Pandolfi
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M F Baietti
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - A Batiuk
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - P Carai
- Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - P Najm
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M Zhang
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - H Jang
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - F Renzi
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Y Cai
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - L Abbasi Asbagh
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - T Pastor
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M De Troyer
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - M Simicek
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium.,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - E Radaelli
- Department of Human Genetics, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - H Brems
- Department of Human Genetics, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - E Legius
- Department of Human Genetics, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - J Tavernier
- VIB Medical Biotechnology Center, Albert Baertsoenkaai 3, 9000 Ghent, Belgium.,Department of Biochemistry, Ghent University, Albert Baertsoenkaai 3, 9000 Ghent, Belgium
| | - K Gevaert
- VIB Medical Biotechnology Center, Albert Baertsoenkaai 3, 9000 Ghent, Belgium.,Department of Biochemistry, Ghent University, Albert Baertsoenkaai 3, 9000 Ghent, Belgium
| | - F Impens
- VIB Proteomics Core, Albert Baertsoenkaai 3, 9000 Ghent, Belgium
| | - L Messiaen
- Department of Human Genetics, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.,Department of Genetics, University of Alabama, Birmingham, AL 35294, USA
| | - R Nussinov
- Cancer and Inflammation Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA.,Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - S Heymans
- Department of Cardiovascular Sciences, Centre for Molecular and Vascular Biology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium.,Department of Cardiology, CARIM School for Cardiovascular Diseases Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands.,The Netherlands Heart Institute, Nl-HI, Utrecht, Netherlands
| | - S Eyckerman
- VIB Medical Biotechnology Center, Albert Baertsoenkaai 3, 9000 Ghent, Belgium.,Department of Biochemistry, Ghent University, Albert Baertsoenkaai 3, 9000 Ghent, Belgium
| | - A A Sablina
- VIB-KU Leuven Center for Cancer Biology, VIB, 3000 Leuven, Belgium. .,Department of Oncology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
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Byun J, Jung H, Bae WK, Lee HJ, Park S, Kim H, Maeng C, Park I, Sohn B, Kim J, Lee K, Im D, Kim J, Jang H, Kim S. Comparative effectiveness of neoadjuvant chemotherapy followed by cystectomy versus cystectomy followed by adjuvant chemotherapy versus palliative chemotherapy versus cystectomy for node-positive bladder cancer: A retrospective analysis: KCSG GU 17-03. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy283.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kim K, Kang S, Kim Y, Yeom M, Lee H, Jang H, Park H. Acupuncture Improves Symptoms in Patients with Mild to Moderate Atopic Dermatitis: A Randomized, Sham-Controlled Preliminary Trial. J Acupunct Meridian Stud 2018. [DOI: 10.1016/j.jams.2018.08.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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35
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Jang H, Park J, Kim M, Chun M, Noh O, Park H, Oh Y. EP-1933: Half field VMAT for MLC leakage reduction and dosimetric impact in whole pelvis radiotherapy. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32242-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Abstract
BACKGROUND The present study aimed to identify independent correlates of toenail selenium levels and to examine the association between toenail selenium levels and metabolic syndrome in Korean adults. METHODS Cross-sectional analysis was conducted using baseline data from the Trace Element Study of Korean Adults in the Yeungnam area, an ongoing cohort study of Korean adults over the age of 35 years. The baseline survey consisted of questionnaires on demographics, lifestyle characteristics and medical information. Dietary information was obtained through a validated semi-quantitative food frequency questionnaire. Toenail selenium levels were quantified using neutron activation analysis. Biomarkers associated with metabolic syndrome were obtained from biennial medical check-ups. RESULTS In the multivariable-adjusted analyses, independent lifestyle and dietary correlates of higher selenium levels were alcohol drinking (4.62% higher than nondrinking) and egg intake (0.43% higher per weekly serving), whereas current smoking (5.42% lower than nonsmoking) and vegetable consumption (0.05% lower per weekly serving) were associated with lower toenail selenium levels. In the multivariable adjusted logistic regression, no significant association was observed between toenail selenium levels and metabolic syndrome (odds ratio = 1.33, 95% confidence interval = 0.58-3.05). CONCLUSIONS Multiple lifestyle and dietary factors influenced toenail selenium levels, although no meaningful association was observed between toenail selenium levels and metabolic syndrome in Korean adults. Future prospective large-scale cohort studies are required to determine whether there is a causal relationship between selenium levels and metabolic syndrome in Korean adults.
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Affiliation(s)
- H Jang
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk, Republic of Korea
| | - J S Morris
- Department of Research and Education, University of Missouri Research Reactor, Columbia, MO, USA.,Department of Research Services, Harry S. Truman Memorial Veterans Hospital, Columbia, MO, USA
| | - K Park
- Department of Food and Nutrition, Yeungnam University, Gyeongsan, Gyeongbuk, Republic of Korea
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Gerber S, Yang SL, Zhu D, Soifer H, Sobota JA, Rebec S, Lee JJ, Jia T, Moritz B, Jia C, Gauthier A, Li Y, Leuenberger D, Zhang Y, Chaix L, Li W, Jang H, Lee JS, Yi M, Dakovski GL, Song S, Glownia JM, Nelson S, Kim KW, Chuang YD, Hussain Z, Moore RG, Devereaux TP, Lee WS, Kirchmann PS, Shen ZX. Femtosecond electron-phonon lock-in by photoemission and x-ray free-electron laser. Science 2018; 357:71-75. [PMID: 28684521 DOI: 10.1126/science.aak9946] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 05/03/2017] [Indexed: 11/02/2022]
Abstract
The interactions that lead to the emergence of superconductivity in iron-based materials remain a subject of debate. It has been suggested that electron-electron correlations enhance electron-phonon coupling in iron selenide (FeSe) and related pnictides, but direct experimental verification has been lacking. Here we show that the electron-phonon coupling strength in FeSe can be quantified by combining two time-domain experiments into a "coherent lock-in" measurement in the terahertz regime. X-ray diffraction tracks the light-induced femtosecond coherent lattice motion at a single phonon frequency, and photoemission monitors the subsequent coherent changes in the electronic band structure. Comparison with theory reveals a strong enhancement of the coupling strength in FeSe owing to correlation effects. Given that the electron-phonon coupling affects superconductivity exponentially, this enhancement highlights the importance of the cooperative interplay between electron-electron and electron-phonon interactions.
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Affiliation(s)
- S Gerber
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,SwissFEL and Laboratory for Micro and Nanotechnology, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - S-L Yang
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - D Zhu
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - H Soifer
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - J A Sobota
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - S Rebec
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - J J Lee
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - T Jia
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - B Moritz
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - C Jia
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - A Gauthier
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
| | - Y Li
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - D Leuenberger
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - Y Zhang
- International Center for Quantum Materials, Peking University, Beijing 100871, China
| | - L Chaix
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - W Li
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - H Jang
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J-S Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - M Yi
- Department of Physics, University of California-Berkeley, Berkeley, CA 94720, USA
| | - G L Dakovski
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Song
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - J M Glownia
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - S Nelson
- Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - K W Kim
- Department of Physics, Chungbuk National University, Cheongju 28644, Korea
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Z Hussain
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - R G Moore
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - T P Devereaux
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA
| | - W-S Lee
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
| | - P S Kirchmann
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.
| | - Z-X Shen
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA. .,Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA
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Bang K, Chee SS, Kim K, Son M, Jang H, Lee BH, Baik KH, Myoung JM, Ham MH. Effect of ribbon width on electrical transport properties of graphene nanoribbons. Nano Converg 2018; 5:7. [PMID: 29577013 PMCID: PMC5852198 DOI: 10.1186/s40580-018-0139-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 02/27/2018] [Indexed: 05/13/2023]
Abstract
There has been growing interest in developing nanoelectronic devices based on graphene because of its superior electrical properties. In particular, patterning graphene into a nanoribbon can open a bandgap that can be tuned by changing the ribbon width, imparting semiconducting properties. In this study, we report the effect of ribbon width on electrical transport properties of graphene nanoribbons (GNRs). Monolayer graphene sheets and Si nanowires (NWs) were prepared by chemical vapor deposition and a combination of nanosphere lithography and metal-assisted electroless etching from a Si wafer, respectively. Back-gated GNR field-effect transistors were fabricated on a heavily p-doped Si substrate coated with a 300 nm-thick SiO2 layer, by O2 reactive ion etching of graphene sheets using etch masks based on Si NWs aligned on the graphene between the two electrodes by a dielectrophoresis method. This resulted in GNRs with various widths in a highly controllable manner, where the on/off current ratio was inversely proportional to ribbon width. The field-effect mobility decreased with decreasing GNR widths due to carrier scattering at the GNR edges. These results demonstrate the formation of a bandgap in GNRs due to enhanced carrier confinement in the transverse direction and edge effects when the GNR width is reduced.
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Affiliation(s)
- Kyuhyun Bang
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722 Republic of Korea
| | - Sang-Soo Chee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
| | - Kangmi Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
| | - Myungwoo Son
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
| | - Hanbyeol Jang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
| | - Byoung Hun Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
| | - Kwang Hyeon Baik
- School of Materials Science and Engineering, Hongik University, Sejong, 30016 Republic of Korea
| | - Jae-Min Myoung
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722 Republic of Korea
| | - Moon-Ho Ham
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005 Republic of Korea
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Lee J, Cho S, Kim H, Kim K, Kim Y, Jang H, Park K, Na D, Seo S. Predictors of clinical progression in patients with non-amnestic mild cognitive impairment: A longitudinal study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Chee SS, Oh C, Son M, Son GC, Jang H, Yoo TJ, Lee S, Lee W, Hwang JY, Choi H, Lee BH, Ham MH. Sulfur vacancy-induced reversible doping of transition metal disulfides via hydrazine treatment. Nanoscale 2017; 9:9333-9339. [PMID: 28463375 DOI: 10.1039/c7nr01883e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chemical doping of transition metal dichalcogenides (TMDCs) has drawn significant interest because of its applicability to the modification of electrical and optical properties of TMDCs. This is of fundamental and technological importance for high-efficiency electronic and optoelectronic devices. Here, we present a simple and facile route to reversible and controllable modulation of the electrical and optical properties of WS2 and MoS2via hydrazine doping and sulfur annealing. Hydrazine treatment of WS2 improves the field-effect mobilities, on/off current ratios, and photoresponsivities of the devices. This is due to the surface charge transfer doping of WS2 and the sulfur vacancies formed by its reduction, which result in an n-type doping effect. The changes in the electrical and optical properties are fully recovered when the WS2 is annealed in an atmosphere of sulfur. This method for reversible modulation can be applied to other transition metal disulfides including MoS2, which may enable the fabrication of two-dimensional electronic and optoelectronic devices with tunable properties and improved performance.
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Affiliation(s)
- Sang-Soo Chee
- School of Materials Science and Engineering, Gwangju Institute of Science & Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
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Kim K, Lee J, Lim S, Jang H. ASSOCIATIONS BETWEEN TRABECULAR BONE SCORE AND VERTEBRAL FRACTURES ACCORDING TO SPINE T-SCORES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K. Kim
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University College of Medicine, Seongnam-si, Kyunggi-do, Seongnam-si, Kyunggi-do, Korea (the Republic of)
| | - J. Lee
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University College of Medicine, Seongnam-si, Kyunggi-do, Seongnam-si, Kyunggi-do, Korea (the Republic of)
| | - S. Lim
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University College of Medicine, Seongnam-si, Kyunggi-do, Seongnam-si, Kyunggi-do, Korea (the Republic of)
| | - H. Jang
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University College of Medicine, Seongnam-si, Kyunggi-do, Seongnam-si, Kyunggi-do, Korea (the Republic of)
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42
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Jang H, Silverberg M, Leyden W, Leibowitz A, Satre D. IMPACT OF AGE GROUP AND PSYCHOSOCIAL FACTORS ON QUALITY OF LIFE AMONG PERSONS LIVING WITH HIV. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H. Jang
- Kaiser Permanente Division of Research, Oakland, California
| | | | - W. Leyden
- Kaiser Permanente Division of Research, Oakland, California
| | - A. Leibowitz
- Kaiser Permanente Division of Research, Oakland, California
| | - D. Satre
- Kaiser Permanente Division of Research, Oakland, California
- University of California, San Francisco, San Francisco, California,
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43
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Lim S, Kim K, Moon J, Moon J, Choi S, Jang H. PREDICTIVE VALUES OF NEW SARCOPENIA INDEX BY FNIH SARCOPENIA PROJECT FOR MORTALITY IN KOREAN ELDERLY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. Lim
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
| | - K. Kim
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
| | - J. Moon
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
| | - J. Moon
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
| | - S. Choi
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
| | - H. Jang
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Kyunggi-do, Korea (the Republic of),
- Seoul National University Medical College, Seongnam-si, Korea (the Republic of)
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44
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Jang H, Suh Y. A STAFF PERCEPTION OF RELATIONSHIP BETWEEN FAMILY AND STAFF IN LONG-TERM CARE FACILITIES IN KOREA. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H. Jang
- Hanyang University, Seoul, Korea (the Republic of),
| | - Y. Suh
- Yonsei University, Seoul, Korea (the Republic of)
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45
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Jang H, Park E, Han D, Kim C, Lee Y. Bladder stone formation on permanent suture material ten years after laparoscopic high uterosacral ligament suspension. CLIN EXP OBSTET GYN 2017. [DOI: 10.12891/ceog3374.2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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46
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Kim S, Kang S, Chun M, Oh Y, Noh O, Jang H, Jo S. PO-0692: The role of adjuvant chemoradiotherapy in patients with common bile duct cancer after R1 resection. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31129-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Jang H, Park EK, Han DS, Kim CJ, Lee YS. Bladder stone formation on permanent suture material ten years after laparoscopic high uterosacral ligament suspension. CLIN EXP OBSTET GYN 2017; 44:472-474. [PMID: 29949298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present authors describe an uncommon case of iatrogenic bladder stone formation in a patient who underwent surgery for pelvic organ prolapse. A female patient who underwent high uterosacral ligament suspension ten years ago presented with pyuria and irritable bladder symptoms that did not respond to treatment. She had not experienced any specific urinary symptoms during the previous ten years. Patient evaluation revealed bladder stone formation on the non-absorbable suture material used during the previous operation. Cystoscopy during the previous operation did not find the suture material, and the suture knot that was tied extravesically during the operation was found inside the bladder. These strongly suggest delayed migration and rotation of the'suture knot after surgery rather than direct penetration of the bladder during operation. Delayed suture migration is a long-term complication that clinicians should consider in a patient who suffers from recurrent urinary symptoms after pelvic surgery around the bladder.
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48
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Jang H, Kang BY, Cho BK, Hashimoto M, Lu D, Burns CA, Kao CC, Lee JS. Observation of Orbital Order in the Half-Filled 4f Gd Compound. Phys Rev Lett 2016; 117:216404. [PMID: 27911536 DOI: 10.1103/physrevlett.117.216404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Indexed: 06/06/2023]
Abstract
Half-filled electron systems, even with the maximized spin angular moment, have been given little attention because of their zero-orbital angular moment according to Hund's rule. Nevertheless, there are several measurements that show evidence of a nonzero orbital moment as well as spin-orbit coupling. Here we report for the first time the orbital order in a half-filled 4f-electron system GdB_{4}, using the resonant soft x-ray scattering at Gd M_{4,5}-edges. Furthermore, we discovered that the development of this orbital order is strongly coupled with the antiferromagnetic spin order. These results clearly demonstrate that even in half-filled electron systems the orbital angular moment can be an important parameter to describe material properties, and may provide significant opportunities for tailoring new correlated electron systems.
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Affiliation(s)
- H Jang
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - B Y Kang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - B K Cho
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - M Hashimoto
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D Lu
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - C A Burns
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
- Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
| | - C-C Kao
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J-S Lee
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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Jang H, Makita Y, Jung K, Ishizaka S, Karasawa K, Oida K, Takai M, Matsuda H, Tanaka A. Linoleic acid salt with ultrapure soft water as an antibacterial combination against dermato-pathogenic Staphylococcus spp. J Appl Microbiol 2016; 120:280-8. [PMID: 26606689 DOI: 10.1111/jam.13012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 07/03/2015] [Revised: 10/29/2015] [Accepted: 11/17/2015] [Indexed: 11/27/2022]
Abstract
AIMS Skin colonization of Staphylococcus spp. critically affects the severity of dermatitis in humans and animals. We examined different types of fatty acid salts for their antibacterial activity against Staphylococcus spp. when used in ultrapure soft water (UPSW). We also evaluated their therapeutic effect on a spontaneous canine model of dermatitis. METHODS AND RESULTS UPSW, in which Ca(++) and Mg(++) were replaced with Na(+) , was generated using a water softener with cation-exchange resin. Staphylococcus aureus (Staph. aureus), Staphylococcus intermedius (Staph. intermedius), and Staphylococcus pseudintermedius (Staph. pseudintermedius) were incubated with various fatty acid salts in distilled water (DW) or UPSW and the number of bacteria was counted. Among the fatty acids, oleic acid salt and linoleic acid (LA) salt reduced the number of these bacteria. Also, UPSW enhanced the antibacterial effect of LA on Staph. spp. In spontaneously developed itchy dermatitis in companion dogs, shampoo treatment with liquid soap containing 10% LA in UPSW improved skin conditions. CONCLUSIONS LA salt showed antibacterial activity against Staph. spp. Treatment with soap containing LA with UPSW reduced clinical conditions in dogs with dermatitis. SIGNIFICANCE AND IMPACT OF THE STUDY Because colonization of Staph. spp. on the skin exacerbates dermatitis, the use of LA-containing soap in UPSW may reduce unpleasant clinical symptoms of the skin.
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Affiliation(s)
- H Jang
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Y Makita
- R&D Center, MIURA Co. Ltd., Ehime, Japan
| | - K Jung
- Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - S Ishizaka
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Karasawa
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Oida
- Laboratories of Veterinary Molecular Pathology and Therapeutics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - M Takai
- R&D Center, MIURA Co. Ltd., Ehime, Japan
| | - H Matsuda
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratories of Veterinary Molecular Pathology and Therapeutics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - A Tanaka
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Kim K, Lee J, Lee Y, Pham Q, Kim J, Jang H, Lee B. Percutaneous absorption of 1-phenoxy-2-propanol, a preservative in cosmetics for exposure assessment. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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