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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Article | UV light driven high-performance room temperature surface acoustic wave NH3 gas sensor using sulfur-doped g-C3N4 quantum dots | Nanomaterials integrated surface acoustic wave (SAW) gas sensing technology has emerged as a promising candidate for real-time toxic gas sensing applications for environmental and human health safety. However, the development of novel chemical interface based on two-dimensional (2D) sensing materials for SAW sensors for the rapid and sensitive detection of NH3 gas at room temperature (RT) still remains challenging. Herein, we report a highly selective RT NH3 gas sensor based on sulfur-doped graphitic carbon nitride quantum dots (S@g-C3N4 QD) coated langasite (LGS) SAW sensor with enhanced sensitivity and recovery rate under ultraviolet (UV) illumination. Fascinatingly, the sensitivity of the S@g-C3N4 QD/LGS SAW sensor to NH3 (500 ppb) at RT is dramatically enhanced by similar to 4.5-fold with a low detection limit (similar to 85 ppb), high selectivity, excellent reproducibility, and fast response/recovery time (70 s/79 s) under UV activation (365 nm) as compared to dark condition. Additionally, the proposed sensor exhibited augmented NH3 detection capability across the broad range of relative humidity (20%-80%). Such remarkable gas sensing performances of the as-prepared sensor to NH3 are attributed to the high surface area, enhanced functional groups, sulfur defects, UV photogenerated charge carriers, and facile charge transfer in the S@g-C3N4 QD sensing layer, which further helps to improve the gas molecules adsorption that causes the increase in conductivity, resulting in larger frequency responses. The gas sensing mechanism of S@g-C3N4 QD/LGS SAW sensor is ascribed to the enhanced electroacoustic effect, which is supported by the correlation of resistive type and COMSOL Multiphysics simulation studies. We envisage that the present work paves a promising strategy to develop the next generation 2D g-C3N4 based high responsive RT SAW gas sensors. | Pasupuleti, Kedhareswara Sairam; Chougule, Sourabh S.; Vidyasagar, Devthade; Bak, Na-hyun; Jung, Namgee; Kim, Young-Neon; Lee, Jong-Hee; Kim, Song-Gang; Kim, Moon-Deock | Chungnam Natl Univ, Dept Phys, 99 Daehak Ro, Daejeon 34134, South Korea; Chungnam Natl Univ, Grad Sch Energy Sci & Technol GEST, 99 Daehak Ro, Daejeon 34134, South Korea; Kyungpook Natl Univ, Dept Mat Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea; Chungnam Natl Univ, Grad Sch Analyt Sci & Technol, 99 Daehak Ro, Daejeon 34134, South Korea; Agr Cooperat Univ, Dept Digital Agr Promot, Goyang Si 10292, Gyeonggi Do, South Korea; Joonbu Univ, Dept Smart Informat Technol, 305 Donghen Ro, Goyang 10279, Kyunggi Do, South Korea; Chungnam Natl Univ, IQS, 99 Daehak Ro, Daejeon 34134, South Korea | Vidyasagar, Devthade/O-3930-2015; Kim, Young Dok/ABG-8986-2021; Lee, JongHee/AAH-4129-2019; Pasupuleti, Kedhareswara Sairam/ABE-6605-2021 | 57219936688; 57209547702; 57201674442; 57224523743; 23995368300; 57196172886; 58158989400; 37112351700; 24577628800 | mdkim@cnu.ac.kr; | NANO RESEARCH | NANO RES | 1998-0124 | 1998-0000 | 16 | 5 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY;PHYSICS, APPLIED | 2023 | 9.6 | 9.8 | 5.83 | 2025-06-25 | 44 | 47 | two-dimensional graphitic carbon nitride (2D g-C3N4); sulfur doping; quantum dots; surface acoustic wave (SAW) sensor; NH3 gas; electroacoustic effect | PHOTOCATALYTIC HYDROGEN EVOLUTION; AMMONIA; NANOSHEETS; CARBON; WATER | electroacoustic effect; NH<sub>3</sub> gas; quantum dots; sulfur doping; surface acoustic wave (SAW) sensor; two-dimensional graphitic carbon nitride (2D g-C<sub>3</sub>N<sub>4</sub>) | Acoustic surface wave devices; Acoustic waves; Ammonia; Charge transfer; Chemical detection; Chemical sensors; Environmental technology; Frequency response; Gas adsorption; Gas detectors; Lanthanum compounds; Nanocrystals; Phase interfaces; Room temperature; Semiconductor quantum dots; Gas-sensors; Graphitic carbon nitrides; Langasites; NH3 gas; Quantum dot; Sulfur doping; Surface acoustic wave sensors; Surface acoustic waves; Two-dimensional; Two-dimensional graphitic carbon nitride (2d g-C3N4); Gases | English | 2023 | 2023-05 | 10.1007/s12274-023-5472-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Circulatory disease mortality among male medical radiation workers in South Korea, 1996-2019 | Objective The aim of this study was to investigate the relationship between occupational radiation exposure and circulatory disease (CD) mortality among medical radiation workers.Methods The study included 53 860 male diagnostic medical radiation workers enrolled in the National Dosimetry Registry (NDR) between 1996 and 2011 in South Korea. NDR data were linked with mortality data obtained from the national registry at the end of 2019. Observed CD mortality rates in this population were compared to those in the general population using the standardized mortality ratio (SMR). The relative risk (RR) for occupational history was estimated by use of internal comparisons, and the excess relative risk (ERR) was used to quantify the radiation dose-response relationship.Results A total of 320 deaths due to CD were identified among 53 860 male medical radiation workers. The SMR of CD was significantly lower among male workers than the general population. A linear dose-response model provided an estimated ERR per 100 mGy for CD [0.85, 95% confidence interval (CI)-0.11-1.82], ischemic heart disease (1.18, 95% CI-0.69-3.05), and cerebrovascular disease (0.23, 95% CI-0.48-0.94) with a 10-years lag, showing no statistical evidence of a radiation dose-response relationship. Additional adjustments for non-radiation factors did not affect the findings on occupational radiation risk for CD mortality. Sensitivity analyses excluding workers employed = 1 mSv showed similar results.Conclusions Occupational radiation doses were non-significantly positively associated with CD mortality among male diagnostic medical radiation workers. However, cautious interpretation is needed due to the limitations of short follow-up. | Bang, Ye Jin; Kim, Young Min; Lee, Won Jin | Korea Univ, Dept Prevent Med, Coll Med, Seoul, South Korea; Korea Univ, Grad Sch Publ Hlth, Seoul, South Korea; Kyungpook Natl Univ, Dept Stat, Daegu, South Korea; Korea Univ, Dept Prevent Med, Coll Med, 73 Goryeo Dae Ro, Seoul 02841, South Korea | ; Lee, JooSang/KLC-3096-2024 | 56985424800; 56035273800; 55641918400 | leewj@korea.ac.kr; | SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH | SCAND J WORK ENV HEA | 0355-3140 | 1795-990X | 49 | 2 | SCIE;SSCI | PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH | 2023 | 4.7 | 9.9 | 0.91 | 2025-06-25 | 4 | 4 | cardiovascular disease; cerebrovascular disease; hospital worker; ionizing radiation; ischemic heart disease; occupational exposure | CARDIOVASCULAR-DISEASES; IONIZING-RADIATION; EXPOSURE; CANCER | cardiovascular disease; cerebrovascular disease; hospital worker; ionizing radiation; ischemic heart disease; occupational exposure | Dose-Response Relationship, Radiation; Humans; Male; Occupational Diseases; Occupational Exposure; Radiation Exposure; Republic of Korea; Risk; South Korea; cardiovascular disease; confidence interval; male; mortality; occupational exposure; radiation exposure; Article; cardiovascular disease; cause of death; cerebrovascular disease; cohort analysis; controlled study; dose response; follow up; human; ischemic heart disease; major clinical study; male; mortality; mortality rate; mortality risk; occupational exposure; radiation dose; radiation dose response; radiation exposure; radiation hazard; radiographer; risk factor; sensitivity analysis; South Korea; standardized mortality ratio; adverse event; occupational disease; radiation response; risk; South Korea | English | 2023 | 2023 | 10.5271/sjweh.4066 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Highly sensitive and label-free detection of influenza H5N1 viral proteins using affinity peptide and porous BSA/MXene nanocomposite electrode | Influenza viruses are known to cause pandemic flu through inter-human and animal-to-human transmissions. Neuraminidase (NA), which is a surface glycoprotein of both influenza A and B viruses, is a minor immunogenic determinant; however, it has been proposed as an ideal candidate for a real testing. We successfully identified an affinity peptide which is specific to the influenza H5N1 virus NA via phage display technique and observed initially its binding affinities using enzyme-linked immunosorbent assay (ELISA). In addition, four synthetic peptides were chemically synthesized to develop an affinity peptide-based electrochemical biosensing system. Among all peptides tested, INA BP2 was selected as a potential candidate and subjected to square-wave vol-tammetry (SWV) for evaluating their detection performance. To enhance analytical performance, a three-dimensional porous bovine serum albumin (BSA)-MXene (BSA/MXene) matrix was applied. The surface morphology of the BSA/MXene film-deposited electrode was analyzed using X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Using SWV measurement, the BSA/MXene nanocomposite-based peptide sensor exhibited significant the dissociation constant (Kd = 9.34 +/- 1.20 nM) and the limit of detection (LOD, 0.098 nM), resulting in good reproducibility, stability and recovery, even in the presence with spiked human plasma. These results demonstrate an alternative way of new bioanalytical sensing platform for developing more desirable sensitivity in other virus detection. | Kim, Ji Hong; Cho, Chae Hwan; Shin, Jae Hwan; Yang, Jin Chul; Park, Tae Jung; Park, Jinyoung; Park, Jong Pil | Chung Ang Univ, Dept Food Sci & Technol, Anseong, South Korea; Kyungpook Natl Univ, Dept Polymer Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea; Chung Ang Univ, Inst Interdisciplinary Convergence Res, Res Inst Chem Bio Diagnost Technol, Dept Chem, 84 Heukseok Ro, Seoul 06974, South Korea | ; Kim, SOO YOUNG/B-4373-2015; Park, Tae/G-1509-2013; PARK, JUN-YOUNG/P-5981-2015 | 57195222340; 57195217683; 57223967488; 56381794400; 35084075100; 57286293400; 9270334400 | jinpark@knu.ac.kr;jppark@cau.ac.kr; | ANALYTICA CHIMICA ACTA | ANAL CHIM ACTA | 0003-2670 | 1873-4324 | 1251 | SCIE | CHEMISTRY, ANALYTICAL | 2023 | 5.7 | 9.9 | 3.75 | 2025-06-25 | 32 | 33 | Neuraminidase; Phage display; Affinity peptide; Porous nanocomposite matrix; Square wave voltammetry | VIRUS H5N1; FABRICATION; APTASENSOR; BIOSENSOR | Affinity peptide; H5N1; Neuraminidase; Phage display; Porous nanocomposite matrix; Square wave voltammetry | Animals; Biosensing Techniques; Electrochemical Techniques; Electrodes; Humans; Influenza A Virus, H5N1 Subtype; Influenza, Human; Limit of Detection; Nanocomposites; Peptides; Porosity; Reproducibility of Results; Serum Albumin, Bovine; Binding energy; Chemical stability; Cyclic voltammetry; Electrochemical electrodes; Enamels; Field emission microscopes; Mammals; Morphology; Nanocomposites; Peptides; Plasma stability; Scanning electron microscopy; Viruses; X ray photoelectron spectroscopy; aluminum; bovine serum albumin; carbon; ethanolamine; glutamylprolylglutamylarginyltyrosylprolylthreonylglutamylvalylthreonylglutamylaspartyllysine; gold; MXene nanocomposite; nanocomposite; nitrogen; silicon; streptavidin; synthetic peptide; transition element; unclassified drug; virus sialidase; bovine serum albumin; MXene; peptide; Affinity peptides; Bovine serum albumins; Label-free detection; Nanocomposite matrix; Neuraminidase; Phage-display; Porous nanocomposite matrix; Porous nanocomposites; Square wave voltammetry; Viral proteins; Article; binding affinity; controlled study; cyclic voltammetry; dissociation constant; electrochemical analysis; enzyme linked immunosorbent assay; field emission scanning electron microscopy; human; impedance spectroscopy; Influenza A virus (H5N1); limit of detection; nonhuman; peptide synthesis; phage display; plasma; porosity; protein analysis; reproducibility; square wave voltammetry; virus detection; X ray photoemission spectroscopy; animal; chemistry; electrode; genetic procedures; influenza; porosity; procedures; Electrochemical impedance spectroscopy | English | 2023 | 2023-04-22 | 10.1016/j.aca.2023.341018 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Development of a semi-open chamber system for the gas exchange measurement of whole-canopy under steady and unsteady states in cucumber seedlings | BackgroundLarge-scale data on the photosynthetic characteristics of whole crop canopy is crucial for improving yield. However, current data collection methods remain challenging, and the time constraints associated with photosynthetic data collection further complicate matters. Developing a practical yet easy-to-use tool for collecting whole-canopy data is essential to address these challenges. Furthermore, it is necessary to obtain instantaneous measurements of photosynthetic rate over a wide range of CO2 concentrations under an unsteady state to enable faster data collection and obtain reliable biochemical limits of carbon assimilation. This study developed a semi-open chamber system with steady and unsteady state measurement techniques to collect biochemical photosynthetic data from an entire cucumber canopy, emphasizing the correction procedures for CO2 concentration of unsteady state measurements applicable regardless of chamber scale.ResultsAfter constructing a semi-open chamber system, we described how to correct measurement errors according to chamber volume. In order to assess the accuracy of the newly developed system, an analysis was conducted to determine the overall measurement error resulting from variations in the reference, sample CO2 concentration, and leakage flow rate. The total measurement error was accurate to no more than 10%. Furthermore, the difference between the photosynthetic rate of the single leaf and that of the whole-canopy was not significant in Rubisco activity-limited carboxylation range. In addition, the Farquhar-von Caemmerer-Berry (FvCB) model parameters and the photosynthetic rate estimation values were compared to evaluate the steady- and unsteady state measurement methods between the cucumber seedlings' single-leaf and whole-canopy. The average root mean square error of the FvCB model in the steady (standard A-C-i response) and unsteady states (800 to 400 ramp) of the chambers was 1.4 and 2.3, respectively. Results show that the developed system is suitable for measuring the gas exchange rate of the cucumber canopy.ConclusionsWe demonstrate the correction method for measurement errors to enable the gas exchange rate of the whole-canopy even in an unsteady state. The correction method of the measurement system of the gas exchange rate for the whole- canopy can be applied regardless of the volume of the chamber, and it can be applied simply to other chamber systems. In addition, an unsteady state measurement method for fast data collection was also applicable. However, it was deemed necessary to identify a more optimal measurement range by conducting measurements across a broader range of values. | Moon, Yu Hyun; Woo, Ui Jeong; Sim, Ha Seon; Lee, Tae Yeon; Shin, Ha Rang; Jo, Jung Su; Kim, Sung Kyeom | Kyungpook Natl Univ, Coll Agr & Sci, Dept Hort Sci, Daegu 41566, South Korea; Kyungpook Natl Univ, Inst Agr Sci & Technol, Daegu 41566, South Korea | Kim, Sung Kyeom/AAD-9230-2019 | 57226272477; 57226269481; 57220890640; 58069843600; 58069726600; 57197337268; 50262290200 | skkim76@knu.ac.kr; | PLANT METHODS | PLANT METHODS | 1746-4811 | 19 | 1 | SCIE | BIOCHEMICAL RESEARCH METHODS;PLANT SCIENCES | 2023 | 4.7 | 10.0 | 0.15 | 2025-06-25 | 2 | 2 | CO2 assimilation rate; Cucumber seedlings; Gas exchange rate; Photosynthesis model; Semi-open chamber; Whole-canopy | PHOTOSYNTHESIS; LEAF; LIGHT; CO2; TRANSPIRATION; EFFICIENCY; YIELD | CO<sub>2</sub> assimilation rate; Cucumber seedlings; Gas exchange rate; Photosynthesis model; Semi-open chamber; Whole-canopy | English | 2023 | 2023-08-07 | 10.1186/s13007-023-01059-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | DMANetKF: Tropical Cyclone Intensity Estimation Based on Deep Learning and Kalman Filter From Multispectral Infrared Images | It is very crucial to identify the intensity of tropical cyclone (TC) accurately. In this article, a novel TC intensity estimation method is proposed to estimate the TC intensity from multispectral infrared images in the Northwest Pacific Basin. A deep multisource attention network (DMANet) is proposed to model the dynamics of multispectral infrared images along the spatial dimension. We first introduce a message-passing enhancement module based on the conditional random fields to process multispectral infrared images. Multispectral data transfer the complementary information to refine the features of TC. Second, we utilize a local global attention module to make the model focus on local key features (i.e., the typhoon eye) and obtain deeper global semantic information of TC. The ablation experiment is set up in the same dataset and computing environment to verify the effectiveness of each module. Finally, we use a Kalman filter to correct the error of TC intensity during its lifetime estimated by the DMANet model. After using Kalman filter, the evolution of TC intensity becomes smooth and corresponding root-mean-square error (RMSE) decreases from 9.79 to 7.82 knots. Compared with the best result of the existing TC intensity estimation method, the RMSE of our method is reduced by 9.07%. Therefore, the proposed TC intensity estimation method shows a great potential for accurately estimating the TC intensity. | Jiang, Wenjun; Hu, Gang; Wu, Tiantian; Liu, Lingbo; Kim, Bubryur; Xiao, Yiqing; Duan, Zhongdong | Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China; Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Peoples R China; Kyungpook Natl Univ, Dept Robot & Smart Syst Engn, Daegu 41566, South Korea | Hu, Gang/P-8189-2018; Duan, Zhongdong/E-9519-2012; Jiang, Wenjun/N-1571-2019; XIAO, YI/MXL-6927-2025; HU, Gang/P-8189-2018 | 57340418300; 56735061500; 57219706293; 57037489000; 57198355299; 7403260236; 7101936838 | 21s154182@stu.hit.edu.cn;hugang@hit.edu.cn;wutt0824@outlook.com;lingbo.liu@polyu.edu.hk;brkim@knu.ac.kr;xiaoyq@hit.edu.cn;duanzd@hit.edu.cn; | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING | IEEE J-STARS | 1939-1404 | 2151-1535 | 16 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;GEOGRAPHY, PHYSICAL;IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY;REMOTE SENSING | 2023 | 4.7 | 10.0 | 3.56 | 2025-06-25 | 16 | 25 | Attention mechanism; deep learning; intensity estimation; Kalman filter; tropical cyclone (TC) | SATELLITE | Attention mechanism; deep learning; intensity estimation; Kalman filter; tropical cyclone (TC) | Bandpass filters; Deep learning; Feature extraction; Hurricanes; Image enhancement; Infrared imaging; Kalman filters; Semantics; Tropics; Attention mechanisms; Deep learning; Features extraction; Intensity estimation; Multi-Sources; Multi-spectral; Tropical cyclone; Tropical cyclone intensity; estimation method; infrared imagery; Kalman filter; learning; tropical cyclone; Tropical cyclone | English | 2023 | 2023 | 10.1109/jstars.2023.3273232 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Letter | Obesity Paradox in Sepsis: Role of Adipose Tissue in Storing Mitochondrial Toxins | Lee, Duk-Hee | Kyungpook Natl Univ, Sch Med, Dept Prevent Med, Daegu, South Korea | 57211851121 | CRITICAL CARE MEDICINE | CRIT CARE MED | 0090-3493 | 1530-0293 | 51 | 8 | SCIE | CRITICAL CARE MEDICINE | 2023 | 7.7 | 10.0 | 1.08 | 2025-06-25 | 2 | 2 | PERSISTENT ORGANIC POLLUTANTS; PLASMA-EXCHANGE | Adipose Tissue; Humans; Obesity; Obesity Paradox; Sepsis; 4,4' isopropylidenediphenol; cytokine; polychlorinated biphenyl; polycyclic aromatic hydrocarbon; toxin; adipose tissue; clinician; human; immune response; Letter; lipophilicity; long term exposure; mitochondrial toxicity; mitochondrion; multiple organ failure; obese patient; obesity; oxidative phosphorylation; persistent organic pollutant; plasma exchange; prognosis; respiratory chain; scientist; sepsis; complication; obesity; obesity paradox | English | 2023 | 2023-08 | 10.1097/ccm.0000000000005913 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||||
| ○ | ○ | Article | Biodegradable and Flexible Polymer-Based Memristor Possessing Optimized Synaptic Plasticity for Eco-Friendly Wearable Neural Networks with High Energy Efficiency | Organic memristors are promising candidates for the flexible synaptic components of wearable intelligent systems. With heightened concerns for the environment, considerable effort has been made to develop organic transient memristors to realize eco-friendly flexible neural networks. However, in the transient neural networks, achieving flexible memristors with biorealistic synaptic plasticity for energy efficient learning processes is still challenging. Herein, a biodegradable and flexible polymer-based memristor, suitable for the spike-dependent learning process, is demonstrated. An electrochemical metallization phenomenon for the conductive nanofilament growth in a polymer medium of poly (vinyl alcohol) (PVA) is analyzed and a PVA-based transient and flexible artificial synapse is developed. The developed device exhibits superior biodegradability and stable mechanical flexibility due to the high water solubility and excellent tensile strength of the PVA film, respectively. In addition, the developed flexible memristor is operated as a reliable synaptic device with optimized synaptic plasticity, which is ideal for artificial neural networks with the spike-dependent operations. The developed device is found to be effectively served as a reliable synaptic component with high energy efficiency in practical neural networks. This novel strategy for developing transient and flexible artificial synapses can be a fundamental platform for realizing eco-friendly wearable intelligent systems. An interactive preprint version of the article can be found here: . | Oh, Sungjun; Kim, Hyungjin; Kim, Seong Eun; Kim, Min-Hwi; Park, Hea-Lim; Lee, Sin-Hyung | Kyungpook Natl Univ, Sch Elect Engn, 80 Daehak Ro, Daegu 702701, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehak Ro, Daegu 702701, South Korea; Yonsei Univ, Dept Mat Sci & Engn, Seoul 03722, South Korea; Chung Ang Univ, Sch Elect & Elect Engn, Seoul 06974, South Korea; Seoul Natl Univ Sci & Technol, Dept Mat Sci & Engn, Seoul 01811, South Korea | Lee, Sin-Hyung/ABD-6425-2022 | 58506437000; 57194280114; 58506540500; 56647038300; 55735654600; 57226880204 | sinhlee@knu.ac.kr; | ADVANCED INTELLIGENT SYSTEMS | ADV INTELL SYST-GER | 2640-4567 | 5 | 5 | SCIE | AUTOMATION & CONTROL SYSTEMS;COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE;ROBOTICS | 2023 | 6.8 | 10.1 | 5.4 | 2025-06-25 | 47 | 48 | artificial synapses; flexible memristors; neural networks; synaptic function; transient memristors | RESISTIVE SWITCHING MEMORY; CONDUCTIVE FILAMENT; GROWTH; DEVICE; ARRAY | artificial synapses; flexible memristors; neural networks; synaptic function; transient memristors | Biodegradability; Biodegradable polymers; Energy efficiency; Environmental protection; Intelligent systems; Memristors; Polyvinyl alcohols; Tensile strength; Wearable technology; Artificial synapse; Eco-friendly; Flexible memristor; Flexible polymers; Memristor; Neural-networks; Synaptic function; Synaptic plasticity; Transient memristor; Neural networks | English | 2023 | 2023-05 | 10.1002/aisy.202200272 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Characterization of structure isomers of ethylbenzalkyl dimethyl ammonium chlorides and quantification in commercial household disinfectant products | Quaternary ammonium compounds (QACs), such as benzalkonium chlorides (BACs) and ethylbenzalkyl dimethyl ammonium chlorides (EBACs), are a major class of chemicals that have been widely used in disinfectants during the pandemic. However, there has been limited information on the EBACs. Specially, structure isomers of EBACs in commercial products have not been characterized. This study involves the structural characterization and quantification of EBACs in three different commercial disinfectants by using ultrahigh resolution and cyclic ion mobility mass spectrometry (UHR-MS and cIM-MS). The toxic fractions of disinfectants were analyzed and a homologue series of EBACs were identified. The main components of the disinfectants analyzed were C12 and C14 EBACs. Furthermore, the ortho and para structural isomers of EBACs were determined based on cIM-MS data. A method for quantifying the total amount of EBACs homologues and isomers was developed and EBACs were detected in commercial disinfectants in concentrations reaching up to 213.3 mu g/mL. This study is the first to report a though evaluation of EBACs in household disinfectant products.(c) 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). | Ahmad, Raees; Cho, Eunji; Rakhmat, Sultonov; Hyun, Moonjung; Park, Chang-Beom; Kim, Sunghwan | Kyungpook Natl Univ, Dept Chem, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Mass Spectrometry Based Convergence Res Inst, 80 Daehak Ro, Daegu 41566, South Korea; Korea Brain Res Inst, Neurodegenerat Dis Res Grp, Daegu 41062, South Korea; Korea Inst Toxicol, Gyeongnam Branch, Jinju 52834, South Korea; Green Nano Mat Res Ctr, Daegu 41566, South Korea | Kim, Sunghwan/HKN-9812-2023 | 57805062800; 55863428700; 57278190100; 8080213400; 56726981900; 57203772967 | sunghwank@knu.ac.kr; | ENVIRONMENTAL TECHNOLOGY & INNOVATION | ENVIRON TECHNOL INNO | 2352-1864 | 29 | SCIE | BIOTECHNOLOGY & APPLIED MICROBIOLOGY;ENGINEERING, ENVIRONMENTAL;ENVIRONMENTAL SCIENCES | 2023 | 6.7 | 10.1 | 0.74 | 2025-06-25 | 4 | 5 | Ultrahigh-performance liquid chromatography-high-resolution mass spectrometry; Ion-mobility; Isomer identification; Collision cross-section; Quantitative analysis | EFFECT-DIRECTED ANALYSIS; ORGANIC TOXICANTS; WATER SAMPLES; QUATERNARY; IDENTIFICATION; SURFACTANTS | Collision cross-section; Ion-mobility; Isomer identification; Quantitative analysis; Ultrahigh-performance liquid chromatography-high-resolution mass spectrometry | Chlorine compounds; Disinfectants; Liquid chromatography; Mass spectrometry; Plants (botany); Ammonium chloride; Benzalkonium chloride; Characterization of structure; Collision cross sections; Ion Mobility; Isomer identification; Liquid chromatography-high resolution mass spectrometries; Quaternary ammonium compound; Ultra-high performance liquid chromatographies; Ultrahigh-performance liquid chromatography-high-resolution mass spectrometry; Isomers | English | 2023 | 2023-02 | 10.1016/j.eti.2022.102979 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization | Event Horizon Telescope (EHT) observations have revealed a bright ring of emission around the supermassive black hole at the center of the M87 galaxy. EHT images in linear polarization have further identified a coherent spiral pattern around the black hole, produced from ordered magnetic fields threading the emitting plasma. Here we present the first analysis of circular polarization using EHT data, acquired in 2017, which can potentially provide additional insights into the magnetic fields and plasma composition near the black hole. Interferometric closure quantities provide convincing evidence for the presence of circularly polarized emission on event-horizon scales. We produce images of the circular polarization using both traditional and newly developed methods. All methods find a moderate level of resolved circular polarization across the image (divided by v divided by > < 3.7%), consistent with the low image-integrated circular polarization fraction measured by the Atacama Large Millimeter/submillimeter Array (divided by v(int)divided by < 1%). Despite this broad agreement, the methods show substantial variation in the morphology of the circularly polarized emission, indicating that our conclusions are strongly dependent on the imaging assumptions because of the limited baseline coverage, uncertain telescope gain calibration, and weakly polarized signal. We include this upper limit in an updated comparison to general relativistic magnetohydrodynamic simulation models. This analysis reinforces the previously reported preference for magnetically arrested accretion flow models. We find that most simulations naturally produce a low level of circular polarization consistent with our upper limit and that Faraday conversion is likely the dominant production mechanism for circular polarization at 230 GHz in M87*. | Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Algaba, Juan Carlos; Anantua, Richard; Asada, Keiichi; Azulay, Rebecca; Bach, Uwe; Baczko, Anne-Kathrin; Ball, David; Balokovic, Mislav; Barrett, John; Baubock, Michi; Benson, Bradford A.; Bintley, Dan; Blackburn, Lindy; Blundell, Raymond; Bouman, Katherine L.; Bower, Geoffrey C.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broderick, Avery E.; Broguiere, Dominique; Bronzwaer, Thomas; Bustamante, Sandra; Byun, Do-Young; Carlstrom, John E.; Ceccobello, Chiara; Chael, Andrew; Chan, Chi-kwan; Chang, Dominic O.; Chatterjee, Koushik; Chatterjee, Shami; Chen, Ming-Tang; Chen, Yongjun; Cheng, Xiaopeng; Cho, Ilje; Christian, Pierre; Conroy, Nicholas S.; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Crew, Geoffrey B.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Dahale, Rohan; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dexter, Jason; Dhruv, Vedant; Doeleman, Sheperd S.; Dougal, Sean; Dzib, Sergio A.; Eatough, Ralph P.; Emami, Razieh; Falcke, Heino; Farah, Joseph; Fish, Vincent L.; Fomalont, Ed; Ford, H. 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韓之強, Chih/AAZ-8498-2020; Ramakrishnan, Venkatessh/C-8628-2017; Chatterjee, Shami/AAE-8374-2022; Bower, Geoffrey/ABC-8386-2020; Koch, Patrick/AAV-3373-2021; Wong, George/AAL-1016-2021; Ceccobello, Chiara/AAD-4283-2022; Lisakov, Mikhail/M-6034-2013; Goddi, Ciriaco/AAN-4033-2021; Lico, Rocco/L-8308-2019; nagar, neil/AAG-4543-2020; Barrett, John/K-8867-2014; Turk, Matthew/GXV-9589-2022; Shao, Lijing/GRO-6046-2022; Olivares, Hector/KWU-1646-2024 | 55669706400; 7004247728; 6603338811; 25640916000; 34876318600; 59858178100; 55974067100; 8356678200; 57191172071; 57191854254; 55441118000; 57221919962; 55279774300; 43360904200; 6508166420; 35271380400; 7005148075; 36627851000; 7006319230; 56514949800; 55348923700; 55789158500; 6701852507; 6602806448; 7005699469; 12805385500; 55845982300; 57208321725; 57203026080; 35276941600; 50660994600; 55324722200; 36984595000; 57223840952; 56714950900; 35500782800; 57137032900; 55721215400; 57194012321; 57203071154; 36918061000; 57740566800; 7402605418; 7102087612; 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55441260500; 55988867400; 57265228200; 23968081200; 7004015011; 24449062500; 57741051000; 7005396724; 57221043024; 37056945900; 55085129000; 57189663390; 55707038700; 55363924100; 57222653895; 7006711792; 25958231300; 49461521500; 56227604600; 26435406400; 57203320360; 7101957568; 6603796954; 35357992400; 55974949000; 55328189400; 56842396800; 15822242200; 10339498400; 6701324987; 6602613149; 7004154914; 12040474800; 7201408992; 57211909247; 56940022200; 35248640700; 56417483100; 55439876600; 15070911300; 7402046134; 57208315428; 57203337908; 57219785777; 55906853300; 57219733023; 57218199060; 57193153580; 55917789200; 56790025000; 8633612000; 7003272026; 57223767933; 35504002700; 7005397816; 56712819200; 55969636900; 57740725900; 16553015400; 7102419670; 57208316263; 8590217600; 55603035800; 56318374100; 57208317089; 57190762698; 48561574100; 7202790050; 6701751772; 57208319833; 57224966143; 56953647500; 35096693300; 35479191600; 7005890052; 56514065800; 15521109400; 7004435256; 57208320592; 36237801500; 57211839957; 57208317879; 57208316658; 55355751300; 56021813700; 56678336600; 7403068909; 7004265198; 57194461089; 59814638100; 55837375900; 57193435506; 57113392000; 7402815984; 26666313200; 7102531000; 57190127327; 36816303500; 8791509900; 57208321142; 14012249000; 18435453100; 57196907740; 54389941800; 6602969503; 23986018200; 57344402000; 7003371610; 58166881600; 57192669640; 55952822800; 25652194300; 7403324447; 57208321653; 25628978700; 44561693800; 58749748100; 6602795601; 57192429990; 43361892500; 56658751100; 56657947900; 6701628482; 7007019201; 57190767230; 57702184700; 57204824800; 57208316147; 8559107900; 24077308500; 6602323834; 6603776865; 36057630500; 57220895149; 55236056100; 7004002583; 36613480200; 57221139279; 23487579300; 55262937300; 52164611300; 7004299975; 24833754300; 57189852229; 57208320165; 57207446777; 57221861625; 56721395200; 57779474100; 54384535700; 56221262400; 7402601128; 55347813900; 55804393100; 57203725419; 35185850600; 7004929291; 55767566800; 55478882500; 55877039000 | ASTROPHYSICAL JOURNAL LETTERS | ASTROPHYS J LETT | 2041-8205 | 2041-8213 | 957 | 2 | SCIE | ASTRONOMY & ASTROPHYSICS | 2023 | 8.8 | 10.1 | 4.15 | 2025-06-25 | 52 | 38 | RELATIVISTIC MAGNETOHYDRODYNAMIC SIMULATIONS; MAGNETICALLY ARRESTED ACCRETION; ACTIVE GALACTIC NUCLEI; SGR A-ASTERISK; BLACK-HOLE; GRMHD SIMULATIONS; POLARIMETRIC IMAGES; FLOWS; JETS; EMISSION | English | 2023 | 2023-11-01 | 10.3847/2041-8213/acff70 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Fischer-Marsden conjecture for hypersurfaces of the complex hyperbolic space | In this paper, we want to solve the Fischer-Marsden conjecture on real hypersurfaces in the complex hyperbolic space CHn = SU1,n/S(U1Un). First we prove that it is true on hypersurfaces with isometric Reeb flow in CHn. Next it is also true on a certain class of contact hypersurfaces in CHn. That is, we have shown that there does not exist a non-trivial solution (g, nu) of Fischer-Marsden equation on contact real hypersurfaces with radius r is an element of[r(1), infinity), where coth(2r(1)) = root 2n-3/n-2 , in the complex hyperbolic space CHn. Consequently, the Fischer-Marsden conjecture is true on these two kinds of real hypersurfaces in the complex hyperbolic space CHn. (c) 2023 Elsevier B.V. All rights reserved. | Hwang, Doo Hyun; Suh, Young Jin | Kyungpook Natl Univ, Res Inst Real & Complex Manifolds, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Math, RIRCM, Daegu 41566, South Korea | 56677222700; 7202260479 | enguss0322@knu.ac.kr;yjsuh@knu.ac.kr; | JOURNAL OF GEOMETRY AND PHYSICS | J GEOM PHYS | 0393-0440 | 1879-1662 | 186 | SCIE | MATHEMATICS;PHYSICS, MATHEMATICAL | 2023 | 1.6 | 10.1 | 0.48 | 2025-06-25 | 1 | 2 | Fischer-Marsden equation; Non-trivial solution(g, v); Isometric Reeb flow; Contact hypersurfaces; Complex hyperbolic space | EINSTEIN REAL HYPERSURFACES; MANIFOLDS | Complex hyperbolic space; Contact hypersurfaces; Fischer-Marsden equation; Isometric Reeb flow; Non-trivial solution (g,ν) | English | 2023 | 2023-04 | 10.1016/j.geomphys.2023.104768 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Identification of Location and Geometry of Invisible Internal Defects in Structures using Deep Learning and Surface Deformation Field | On-site inspection of invisible subsurface defects in multiscale structural materials by conventional nondestructive testing (NDT) methods, such as X-ray and ultrasound, requires complex sample preparation and data acquisition processes. Moreover, the inspected area is very small. Herein, a simple, inexpensive, and ultrasensitive NDT method for identifying and classifying the geometries of subsurface defects using commercial cameras, digital image correlation software, and object detection (OD) algorithms is developed. Three OD algorithms-Faster region-based convolutional neural network (Faster R-CNN), Mask R-CNN, and you-only-look-once (YOLO)v3-are evaluated for their ability to locate defects and identify defect geometries. Specifically, bounding boxes of two sizes (large and small) are applied to the regions of defect-induced perturbations in strain tensors, which serve as virtual representatives of invisible subsurface defects. The performance of the proposed approach is validated on test datasets of known and unknown defect types. The experimental results confirm that the proposed approach can effectively utilize the surface deformation field information to accurately and reliably locate and identify subsurface defects. The method is nondestructive and low cost, enables real-time detection, is robust against noise-dominated deformation fields, and can be applied to various structural deformations. The method is therefore suitable for multiscale structural health monitoring and characterization of internal defects in materials. A simple, cheap, and ultrasensitive nondestructive testing method for identifying the location and geometry of invisible internal defects in structures using deep learning and surface deformation field is developed and evaluated. The method is user-friendly and can be applied to a wide range of materials and deformations, without requiring knowledge of material properties or complex mathematical equations.image (c) 2023 WILEY-VCH GmbH | Timilsina, Suman; Jang, Seong Min; Jo, Cheol Woo; Kwon, Yong Nam; Sohn, Kee-Sun; Lee, Kwang Ho; Kim, Ji Sik | Kyungpook Natl Univ, Sch Nano & Adv Mat Engn, Kyeongbuk 37224, South Korea; Kyungpook Natl Univ, KNU Res Inst Artificial Intelligent Diag Technol, Kyeongbuk 37224, South Korea; Kyungpook Natl Univ, Dept Adv Sci & Technol Convergence, Kyeongbuk 37224, South Korea; Korea Inst Mat Sci, Dept Digital Platform, Chang Won 51508, South Korea; Sejong Univ, Nanotechnol & Adv Mat Engn, 209 Neungdong Ro, Seoul 143747, South Korea; Kyungpook Natl Univ, Dept Automot Engn, Kyeongbuk 37224, South Korea | ; Timilisina, Suman/GLT-8029-2022 | 55844969100; 57702842700; 58643182700; 7403459230; 56067767800; 56348794600; 16444690100 | kyn1740@kims.re.kr;kssohn@sejong.ac.kr;khl@knu.ac.kr;jisikkim@knu.ac.kr; | ADVANCED INTELLIGENT SYSTEMS | ADV INTELL SYST-GER | 2640-4567 | 5 | 12 | SCIE | AUTOMATION & CONTROL SYSTEMS;COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE;ROBOTICS | 2023 | 6.8 | 10.1 | 0.35 | 2025-06-25 | 2 | 4 | defect-induced perturbations; digital image correlation; invisible internal defects; object detection deep learning; structural health monitoring | DETECTION ALGORITHM; OBJECT DETECTION; IMAGE | defect-induced perturbations; digital image correlation; invisible internal defects; object detection deep learning; structural health monitoring | Data acquisition; Deep learning; E-learning; Geometry; Image correlation; Intelligent systems; Nondestructive examination; Object recognition; Strain measurement; Structural health monitoring; Ultrasonic applications; Defect-induced perturbation; Defects induced; Deformation field; Digital image correlations; Internal defects; Invisible internal defect; Object detection deep learning; Objects detection; Subsurface defect; Surface-deformations; Object detection | English | 2023 | 2023-12 | 10.1002/aisy.202300314 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Inhibition of Pyruvate Dehydrogenase Kinase 4 in CD4⁺ T Cells Ameliorates Intestinal Inflammation | BACKGROUND & AIMS: Despite recent evidence supporting the metabolic plasticity of CD4(+) T cells, it is uncertain whether the metabolic checkpoint pyruvate dehydrogenase kinase (PDK) in T cells plays a role in the pathogenesis of colitis.METHODS: To investigate the role of PDK4 in colitis, we used dextran sulfate sodium (DSS)-induced colitis and T-cell transfer colitis models based on mice with constitutive knockout (KO) or CD4(+) T-cell-specific KO of PDK4 (Pdk4fl/flCD4Cre). The effect of PDK4 deletion on T-cell activation was also studied in vitro. Furthermore, we examined the effects of a pharmacologic in-hibitor of PDK4 on colitis.RESULTS: Expression of PDK4 increased during colitis development in a DSS-induced colitis model. Phosphorylated PDHE1a, a substrate of PDK4, accumulated in CD4(+) T cells in the lamina propria of patients with inflammatory bowel disease. Both constitutive KO and CD4(+) T-cell-specific deletion of PDK4 delayed DSS-induced colitis. Adoptive transfer of PDK4-deficient CD4(+) T cells attenuated murine colitis, and PDK4 deficiency resulted in decreased activation of CD4(+) T cells and attenuated aerobic glycolysis. Mecha-nistically, there were fewer endoplasmic reticulum- mitochondria contact sites, which are responsible for inter -organelle calcium transfer, in PDK4-deficient CD4(+) T cells. Consistent with this, GM-10395, a novel inhibitor of PDK4, suppressed T-cell activation by reducing endoplasmic reticulum-mitochondria calcium transfer, thereby amelio-rating murine colitis.CONCLUSIONS: PDK4 deletion from CD4(+) T cells mitigates colitis by metabolic and calcium signaling modulation, sug-gesting PDK4 as a potential therapeutic target for IBD. | Lee, Hoyul; Han, Jae; Lee, Yu-Jeong; Kim, Mi-Jin; Kwon, Woong Hee; Chanda, Dipanjan; Thoudam, Themis; Pagire, Haushabhau S.; Pagire, Suvarna H.; Ahn, Jin Hee; Harris, Robert A.; Kim, Eun Soo; Lee, In-Kyu | Kyungpook Natl Univ, Res Inst Aging & Metab, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Cell & Matrix Res Inst, Daegu, South Korea; Kyungpook Natl Univ Hosp, Leading Edge Res Ctr Drug Discovery & Dev Diabet &, Daegu, South Korea; Gwangju Inst Sci & Technol, Dept Chem, Gwangju, South Korea; Univ Kansas Med Ctr, Dept Biochem & Mol Biol, Kansas City, KS USA; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Internal Med, Div Gastroenterol, Daegu, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Div Gastroenterol, 130 Dongdeok ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, 130 Dongdeok ro, Daegu 41944, South Korea | Lee, Jaewoong/IQS-0514-2023; Ahn, Jin/C-6122-2019; thoudam, themis/ACM-3919-2022; Kim, Sang/J-5398-2012; Lee, In-Kyu/AAR-6374-2021 | 58017533900; 36910340400; 57189520824; 56984392800; 57204167945; 16416525900; 57192905626; 55599893000; 56716279400; 56714432600; 58710709100; 57203086704; 36071537600 | dandy813@hanmail.net;leei@knu.ac.kr; | CELLULAR AND MOLECULAR GASTROENTEROLOGY AND HEPATOLOGY | CELL MOL GASTROENTER | 2352-345X | 15 | 2 | SCIE | GASTROENTEROLOGY & HEPATOLOGY | 2023 | 7.1 | 10.1 | 2.14 | 2025-06-25 | 14 | 15 | Inflammatory Bowel Disease; Pyruvate Dehydrogenase Kinase; Mitochondria-Associated ER Membrane | OPERATED CA2+ ENTRY; ENDOPLASMIC-RETICULUM; CALCIUM FLUX; ACTIVATION; MTOR; MITOCHONDRIA; PATHOGENESIS; DIFFERENTIATION; METABOLISM; MECHANISMS | Inflammatory Bowel Disease; Mitochondria-Associated ER Membrane; Pyruvate Dehydrogenase Kinase | Animals; Calcium; CD4-Positive T-Lymphocytes; Colitis; Inflammation; Mice; Mice, Knockout; T-Lymphocytes; calcium; complementary DNA; cyclosporine; cytokine; docusate sodium; drinking water; enzyme inhibitor; gm 10395; hypoxia inducible factor 1alpha; interleukin 1; interleukin 12; interleukin 17; interleukin 2; mammalian target of rapamycin; messenger RNA; mucin 1; mucin 2; Myc protein; pyruvate dehydrogenase kinase 4; RNA; tumor necrosis factor; unclassified drug; pyruvate dehydrogenase kinase 4; adoptive transfer; adult; aerobic glycolysis; animal cell; animal experiment; animal model; animal tissue; Article; calcium cell level; calcium signaling; CD4+ T lymphocyte; colitis; colonic lamina propria; controlled study; cytokine release; dextran sulfate sodium-induced colitis; disease severity; dose response; drug safety; drug targeting; endoplasmic reticulum membrane; enteritis; enzyme deficiency; enzyme inhibition; enzyme linked immunosorbent assay; ex vivo study; experimental colitis; flow cytometry; gene expression profiling; human; human cell; immune system; immunohistochemistry; in vitro study; inflammation; inflammatory bowel disease; knockout gene; knockout mouse; lamina propria; lymphocyte differentiation; male; mitochondrion; mouse; nonhuman; protein expression; protein function; protein phosphorylation; real time polymerase chain reaction; RNA sequencing; signal transduction; T lymphocyte; T lymphocyte activation; Western blotting; animal; CD4+ T lymphocyte; colitis; inflammation; metabolism; pathology; T lymphocyte | English | 2023 | 2023 | 10.1016/j.jcmgh.2022.09.016 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Optimal tracer identification for dissolved organic matter (DOM) source tracking in watersheds using point source effluent load data | In this study, we characterized the optical and molecular weight (MW) properties of dissolved organic matter (DOM) with various sources in an agriculture-forestry watershed. We proposed a guideline to identify optimum DOM source tracers for downstream rivers during both rain and non-rain events, utilizing the load of dissolved organic carbon (DOC) from point sources. Six descriptors were pre-selected based on established criteria in the literature, and fifteen pairs of these descriptors were evaluated for their applicability in end-member mixing analysis (EMMA). The results from EMMA provided inconsistent estimates of relative contributions from DOM sources across the fifteen pairs, with optical descriptors outperforming MW-based descriptors and their combinations. The optimal source tracers were determined by comparing relative contributions of DOM from upstream effluent wastewater using DOC load ratios calculated from on-site monitoring data and predictions based on EMMA. The pair of optical descriptors, HIX (humification index) and BIX (biological index), closely matched the measured load ratios with minimal discrepancies (0.4 +/- 0.4 %). According to the EMMA results using pairs of HIX and BIX, non-rain events were primarily influenced by oil-cake fertilizer and treated effluent wastewater, while rain event samples were dominated by manure and soils. These findings offer insights into managing non-point organic pollution sources in agricultural-forestry watersheds, contributing to our understanding of carbon and nutrient cycling in aquatic systems. Notably, this study proposes a validation guideline that employs load ratios of point sources, such as effluent wastewater, to enhance source tracking accuracy. | Oh, Haeseong; Jung, Ka-Young; Kim, Bo Young; Lee, Byung Joon; Shin, Hyun-Sang; Hur, Jin | Sejong Univ, Dept Environm & Energy, 209 Neungdong Ro, Seoul 05006, South Korea; Kyungpook Natl Univ, Dept Adv Sci & Technol Convergence, 2559 Gyeongsang Daero, Sangju Byeongbuk 37224, South Korea; Seoul Natl Univ Sci & Technol, Dept Environm Engn, 232 Gongneung Ro, Seoul 01811, South Korea | Kim, Kyung-Woon/F-7287-2018; Lee, Jungmin/KHT-2438-2024 | 57222416288; 42961607300; 58675309300; 56016052400; 7404012061; 7005096817 | jinhur@sejong.ac.kr; | ENVIRONMENTAL TECHNOLOGY & INNOVATION | ENVIRON TECHNOL INNO | 2352-1864 | 32 | SCIE | BIOTECHNOLOGY & APPLIED MICROBIOLOGY;ENGINEERING, ENVIRONMENTAL;ENVIRONMENTAL SCIENCES | 2023 | 6.7 | 10.1 | 0.44 | 2025-06-25 | 3 | 3 | Dissolved organic matter; Source tracking; End-member mixing analysis; Non -point sources; Fluorescence; Size exclusion chromatography | STORM EVENTS; FLUORESCENCE INDEX; LC-OCD; RIVER; ISOTOPE; DYNAMICS; SEDIMENT; NUTRIENT; QUALITY; BASIN | Dissolved organic matter; End-member mixing analysis; Fluorescence; Non-point sources; Size exclusion chromatography; Source tracking | Biogeochemistry; Dissolution; Effluents; Fertilizers; Mixing; Organic carbon; Rain; River pollution; Rivers; Size exclusion chromatography; Stream flow; Timber; Wastewater treatment; Watersheds; Descriptors; Dissolved organic matters; End-member mixing analysis; Nonpoint sources; Optical-; Organic matter source; Point-sources; Rain events; Size-exclusion chromatography; Source tracking; Forestry | English | 2023 | 2023-11 | 10.1016/j.eti.2023.103423 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | Article | Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes | The Event Horizon Telescope (EHT) is a millimeter very long baseline interferometry (VLBI) array that has imaged the apparent shadows of the supermassive black holes M87* and Sagittarius A*. Polarimetric data from these observations contain a wealth of information on the black hole and accretion flow properties. In this work, we develop polarimetric geometric modeling methods for mm-VLBI data, focusing on approaches that fit data products with differing degrees of invariance to broad classes of calibration errors. We establish a fitting procedure using a polarimetric "m-ring" model to approximate the image structure near a black hole. By fitting this model to synthetic EHT data from general relativistic magnetohydrodynamic models, we show that the linear and circular polarization structure can be successfully approximated with relatively few model parameters. We then fit this model to EHT observations of M87* taken in 2017. In total intensity and linear polarization, the m-ring fits are consistent with previous results from imaging methods. In circular polarization, the m-ring fits indicate the presence of event-horizon-scale circular polarization structure, with a persistent dipolar asymmetry and orientation across several days. The same structure was recovered independently of observing band, used data products, and model assumptions. Despite this broad agreement, imaging methods do not produce similarly consistent results. Our circular polarization results, which imposed additional assumptions on the source structure, should thus be interpreted with some caution. Polarimetric geometric modeling provides a useful and powerful method to constrain the properties of horizon-scale polarized emission, particularly for sparse arrays like the EHT. | Roelofs, Freek; Johnson, Michael D.; Chael, Andrew; Janssen, Michael; Wielgus, Maciek; Broderick, Avery E.; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Algaba, Juan Carlos; Anantua, Richard; Asada, Keiichi; Azulay, Rebecca; Bach, Uwe; Baczko, Anne-Kathrin; Ball, David; Balokovic, Mislav; Barrett, John; Baubock, Michi; Benson, Bradford A.; Bintley, Dan; Blackburn, Lindy; Blundell, Raymond; Bouman, Katherine L.; Bower, Geoffrey C.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broguiere, Dominique; Bronzwaer, Thomas; Bustamante, Sandra; Byun, Do-Young; Carlstrom, John E.; Ceccobello, Chiara; Chan, Chi-kwan; Chang, Dominic O.; Chatterjee, Koushik; Chatterjee, Shami; Chen, Ming-Tang; Chen, Yongjun; Cheng, Xiaopeng; Cho, Ilje; Christian, Pierre; Conroy, Nicholas S.; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Crew, Geoffrey B.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Dahale, Rohan; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dexter, Jason; Dhruv, Vedant; Doeleman, Sheperd S.; Dougal, Sean; Dzib, Sergio A.; Eatough, Ralph P.; Emami, Razieh; Falcke, Heino; Farah, Joseph; Fish, Vincent L.; Fomalont, Ed; Ford, H. Alyson; Foschi, Marianna; Fraga-Encinas, Raquel; Freeman, William T.; Friberg, Per; Fromm, Christian M.; Fuentes, Antonio; Galison, Peter; Gammie, Charles F.; Garcia, Roberto; Gentaz, Olivier; Georgiev, Boris; Goddi, Ciriaco; Gold, Roman; Gomez-Ruiz, Arturo, I; Gomez, Jose L.; Gu, Minfeng; Gurwell, Mark; Hada, Kazuhiro; Haggard, Daryl; Haworth, Kari; Hecht, Michael H.; Hesper, Ronald; Heumann, Dirk; Ho, Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang, Lei; Hughes, David H.; Ikeda, Shiro; Impellizzeri, C. M. Violette; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Jeter, Britton; Jiang, Wu; Jimenez-Rosales, Alejandra; Jorstad, Svetlana; Joshi, Abhishek, V; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Kawashima, Tomohisa; Keating, Garrett K.; Kettenis, Mark; Kim, Dong-Jin; Kim, Jae-Young; Kim, Jongsoo; Kim, Junhan; Kino, Motoki; Koay, Jun Yi; Kocherlakota, Prashant; Kofuji, Yutaro; Koch, Patrick M.; Koyama, Shoko; Kramer, Carsten; Kramer, Joana A.; Kramer, Michael; Krichbaum, Thomas P.; Kuo, Cheng-Yu; La Bella, Noemi; Lauer, Tod R.; Lee, Daeyoung; Lee, Sang-Sung; Leung, Po Kin; Levis, Aviad; Li, Zhiyuan; Lico, Rocco; Lindahl, Greg; Lindqvist, Michael; Lisakov, Mikhail; Liu, Jun; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent; Lonsdale, Colin J.; Lowitz, Amy E.; Lu, Ru-Sen; MacDonald, Nicholas R.; Mao, Jirong; Marchili, Nicola; Markoff, Sera; Marrone, Daniel P.; Marscher, Alan P.; Marti-Vidal, Ivan; Matsushita, Satoki; Matthews, Lynn D.; Medeiros, Lia; Menten, Karl M.; Michalik, Daniel; Mizuno, Izumi; Mizuno, Yosuke; Moran, James M.; Moriyama, Kotaro; Moscibrodzka, Monika; Mulaudzi, Wanga; Muller, Cornelia; Muller, Hendrik; Mus, Alejandro; Musoke, Gibwa; Myserlis, Ioannis; Nadolski, Andrew; Nagai, Hiroshi; Nagar, Neil M.; Nakamura, Masanori; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Nathanail, Antonios; Fuentes, Santiago Navarro; Neilsen, Joey; Neri, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Nowak, Michael A.; Oh, Junghwan; Okino, Hiroki; Olivares, Hector; Ortiz-Leon, Gisela N.; Oyama, Tomoaki; Ozel, Feryal; Palumbo, Daniel C. M.; Paraschos, Georgios Filippos; Park, Jongho; Parsons, Harriet; Patel, Nimesh; Pen, Ue-Li; Pesce, Dominic W.; Pietu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Porth, Oliver; Potzl, Felix M.; Prather, Ben; Preciado-Lopez, Jorge A.; Psaltis, Dimitrios; Pu, Hung-Yi; Ramakrishnan, Venkatessh; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Rezzolla, Luciano; Ricarte, Angelo; Ripperda, Bart; Rogers, Alan; Romero-Canizales, Cristina; Ros, Eduardo; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruiz, Ignacio; Ruszczyk, Chet; Rygl, Kazi L. J.; Sanchez, Salvador; Sanchez-Arguelles, David; Sanchez-Portal, Miguel; Sasada, Mahito; Satapathy, Kaushik; Savolainen, Tuomas; Schloerb, F. Peter; Schonfeld, Jonathan; Schuster, Karl-Friedrich; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Salas, Leon David Sosapanta; Souccar, Kamal; Sun, He; Tazaki, Fumie; Tetarenko, Alexandra J.; Tiede, Paul; Tilanus, Remo P. 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Torne, Pablo/MIP-4319-2025; Lisakov, Mikhail/JAX-3277-2023; Pesce, Dominic/AAX-6358-2021; 韓之強, Chih/AAZ-8498-2020; Olivares Sanchez, Hector Raul/KWU-1646-2024; Cheng, Xiaopeng/ABX-5356-2022; Bloch, Michael/O-7845-2017; Turk, Matthew/GXV-9589-2022; Ikeda, Shiro/E-1736-2016; ALBERDI, ANTONIO/H-6432-2015; Wong, George/AAL-1016-2021; Koch, Patrick/AAV-3373-2021; Sasada, Mahito/ABD-5766-2020; Bower, Geoffrey/ABC-8386-2020; Wagner, Jan/LTZ-8501-2024; Liu, Kuo/AAM-1431-2021; Ceccobello, Chiara/AAD-4283-2022; Algaba, Juan Carlos/AAB-4526-2022; Goddi, Ciriaco/AAN-4033-2021; Azulay, Rebecca/U-2560-2017 | freek.roelofs@cfa.harvard.edu; | ASTROPHYSICAL JOURNAL LETTERS | ASTROPHYS J LETT | 2041-8205 | 2041-8213 | 957 | 2 | SCIE | ASTRONOMY & ASTROPHYSICS | 2023 | 8.8 | 10.1 | 7 | M87 EVENT HORIZON; MAGNETIC-FIELD STRUCTURE; SCALE CIRCULAR-POLARIZATION; TELESCOPE RESULTS. I.; A-ASTERISK; FARADAY-ROTATION; ACCRETION FLOWS; IMAGES; GENERATION; RADIATION | English | 2023 | 2023-11-01 | 10.3847/2041-8213/acff6f | 바로가기 | 바로가기 | 바로가기 | ||||||||||
| ○ | ○ | Article | Real hypersurfaces in the complex hyperbolic two-plane Grassmannians satisfying the Ricci-Bourguignon soliton | In this paper we studied real hypersurfaces in the complex hyperbolic two-plane Grassmannian G(2)*(Cm+2) and proved that a Hopf real hypersurface in G(2)*(Cm+2) does not admit Ricci-Bourguignon soliton if we use the notion of pseudo-anti commuting Ricci tensor. In addition to this one, we have proved that a non-trivial gradient Ricci-Bourguignon soliton (M, Df , nu, rho, gamma , g) on real hypersurfaces with isometric Reeb flow in the complex hyperbolic two-plane Grassmannian G(2)*(Cm+2) does not exist. In the class of contact hypersurface in G(2)*(Cm+2), it has been also proved that there does not exist a non-trivial gradient Ricci-Bourguignon soliton in G2*(Cm+2).(c) 2023 Elsevier B.V. All rights reserved. | Suh, Young Jin | Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea; Kyungpook Natl Univ, RIRCM, Daegu 41566, South Korea | 57205268556 | yjsuh@knu.ac.kr; | JOURNAL OF GEOMETRY AND PHYSICS | J GEOM PHYS | 0393-0440 | 1879-1662 | 194 | SCIE | MATHEMATICS;PHYSICS, MATHEMATICAL | 2023 | 1.6 | 10.1 | 0 | 2025-06-25 | 0 | 0 | Ricci-Bourguignon soliton; Non-trivial solution(M xi nu rho gamma ,g); Isometric Reeb flow; Contact hypersurfaces; Complex hyperbolic two-plane; Grassmannian | FISCHER-MARSDEN CONJECTURE; CONVERGENCE; TENSOR; SPACE; FLOW | Complex hyperbolic two-plane Grassmannian; Contact hypersurfaces; Isometric Reeb flow; Non-trivial solution (M,ξ,ν,ρ,γ,g); Ricci-Bourguignon soliton | English | 2023 | 2023-12 | 10.1016/j.geomphys.2023.105018 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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