2021 연구성과 (4 / 281)
※ 컨트롤 + 클릭으로 열별 다중 정렬 가능합니다.
Excel 다운로드
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ○ | ○ | Article | The effect of corporate environmental responsibility and religiosity on corporate cash holding decisions and profitability: Evidence from the United States' policies for sustainable development | We use religious background as a proxy for local risk-taking attitudes and investigate whether geographical variation in religion affects corporate environmental responsibility (CER) with regards to corporate cash policies and profitability. We conjecture that the presence of environmentally conscious firms would be higher in areas with more Catholics relative to Protestants. Study data comprises of the largest publicly traded U.S.-listed firms of Newsweek's green rankings of 2015-2016. We use green scores and the concentration of Catholic to Protestant population ratio as proxies for CER and religiosity, respectively. We provide robust evidence that corporate environmental practices attenuate the demand for precautionary cash reserves to protect firms from unforeseeable risks. Furthermore, environmentally conscious firms located in high risk-taking areas gain financial stability and improve profitability, strengthening their CER. The findings provide contributions to risk management literature and document the importance of firms' efforts to harmonize social behavior for sustainable financial policies. | Tsendsuren, Chuluunbat; Yadav, Prayag L.; Han, Seung Hun; Mun, Seongjae | Korea Adv Inst Sci & Technol KAIST, Coll Business, Sch Business & Technol Management, Daejeon, South Korea; Korea Adv Inst Sci & Technol, Coll Business, Global Commercializat Ctr, Daejeon, South Korea; Kyungpook Natl Univ, Sch Business Adm, 80 Daehak Ro, Daegu, South Korea | ; Han, Seunghun/NGS-3344-2025 | 57222869622; 57191203196; 25824269200; 57216877275 | chuluunbat@kaist.ac.kr;forbelld@knu.ac.kr; | SUSTAINABLE DEVELOPMENT | SUSTAIN DEV | 0968-0802 | 1099-1719 | 29 | 5 | SSCI | DEVELOPMENT STUDIES;GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY;REGIONAL & URBAN PLANNING | 2021 | 8.562 | 1.2 | 0.78 | 2025-07-30 | 11 | 12 | cash holding; corporate environmental responsibility; profitability; religion; risk‐ taking behavior; sustainable development | cash holding; corporate environmental responsibility; profitability; religion; risk-taking behavior; sustainable development | United States; corporate social responsibility; geographical variation; policy approach; profitability; religion; sustainable development | English | 2021 | 2021-09 | 10.1002/sd.2189 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Deep metric learning-based image retrieval system for chest radiograph and its clinical applications in COVID-19 | In recent years, deep learning-based image analysis methods have been widely applied in computer-aided detection, diagnosis and prognosis, and has shown its value during the public health crisis of the novel coronavirus disease 2019 (COVID-19) pandemic. Chest radiograph (CXR) has been playing a crucial role in COVID-19 patient triaging, diagnosing and monitoring, particularly in the United States. Considering the mixed and unspecific signals in CXR, an image retrieval model of CXR that provides both similar images and associated clinical information can be more clinically meaningful than a direct image diagnostic model. In this work we develop a novel CXR image retrieval model based on deep metric learning. Unlike traditional diagnostic models which aim at learning the direct mapping from images to labels, the proposed model aims at learning the optimized embedding space of images, where images with the same labels and similar contents are pulled together. The proposed model utilizes multi-similarity loss with hard-mining sampling strategy and attention mechanism to learn the optimized embedding space, and provides similar images, the visualizations of disease-related attention maps and useful clinical information to assist clinical decisions. The model is trained and validated on an international multi-site COVID-19 dataset collected from 3 different sources. Experimental results of COVID-19 image retrieval and diagnosis tasks show that the proposed model can serve as a robust solution for CXR analysis and patient management for COVID-19. The model is also tested on its transferability on a different clinical decision support task for COVID-19, where the pre-trained model is applied to extract image features from a new dataset without any further training. The extracted features are then combined with COVID19 patient?s vitals, lab tests and medical histories to predict the possibility of airway intubation in 72 hours, which is strongly associated with patient prognosis, and is crucial for patient care and hospital resource planning. These results demonstrate our deep metric learning based image retrieval model is highly efficient in the CXR retrieval, diagnosis and prognosis, and thus has great clinical value for the treatment and management of COVID-19 patients. ? 2021 Published by Elsevier B.V. | Zhong, Aoxiao; Li, Xiang; Wu, Dufan; Ren, Hui; Kim, Kyungsang; Kim, Younggon; Buch, Varun; Neumark, Nir; Bizzo, Bernardo; Tak, Won Young; Park, Soo Young; Lee, Yu Rim; Kang, Min Kyu; Park, Jung Gil; Kim, Byung Seok; Chung, Woo Jin; Guo, Ning; Dayan, Ittai; Kalra, Mannudeep K.; Li, Quanzheng | Massachusetts Gen Hosp, Dept Radiol, Boston, MA 02114 USA; Harvard Univ, Sch Engn & Appl Sci, Boston, MA USA; MGH & BWH Ctr Clin Data Sci, Boston, MA 02114 USA; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Yeungnam Univ, Dept Internal Med, Coll Med, Daegu, South Korea; Catholic Univ Daegu, Dept Internal Med, Sch Med, Daegu, South Korea; Keimyung Univ, Dept Internal Med, Sch Med, Daegu, South Korea | Kim, Seul Kee/A-6076-2015; Park, Jung/AAK-5167-2020; Bizzo, Bernardo/AAF-1702-2019; Kang, Min/U-8050-2018; Wu, Dufan/AFZ-1956-2022; Li, Xiang/J-6924-2019; Kalra, Mannudeep/LXW-4237-2024 | 57216519277; 27168120000; 55286668100; 57214672137; 44861409500; 57208003578; 57200946317; 57212374506; 37050694500; 7004074582; 57191674344; 57194094753; 59142854300; 57216816399; 55974276800; 55741230500; 58714597300; 57219308459; 7007035549; 7405862484 | li.quanzheng@mgh.harvard.edu; | MEDICAL IMAGE ANALYSIS | MED IMAGE ANAL | 1361-8415 | 1361-8423 | 70 | SCIE | COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE;COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS;ENGINEERING, BIOMEDICAL;RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING | 2021 | 13.828 | 1.3 | 4.22 | 2025-07-30 | 55 | 60 | Chest radiograph; COVID-19; Image retrieval; Image content query | DATASETS | Chest radiograph; COVID-19; Image content query; Image retrieval | Algorithms; COVID-19; Deep Learning; Female; Humans; Image Interpretation, Computer-Assisted; Male; Middle Aged; Pandemics; Tomography, X-Ray Computed; Computer aided analysis; Computer aided diagnosis; Computer aided instruction; Decision support systems; Deep learning; Embeddings; Image analysis; Learning systems; Patient treatment; Radiography; Search engines; Attention mechanisms; Clinical application; Clinical decision support; Clinical information; Computer aided detection; Diagnosis and prognosis; Image analysis method; Image retrieval systems; adult; Article; case control study; clinical decision making; clinical decision support system; controlled study; coronavirus disease 2019; COVID-19 testing; cross validation; data mining; deep neural network; diagnostic accuracy; diagnostic test accuracy study; differential diagnosis; disease severity; embedding; endotracheal intubation; feasibility study; feature extraction; female; hospital planning; human; image analysis; image processing; image retrieval; intermethod comparison; k nearest neighbor; laboratory test; major clinical study; male; medical history; middle aged; multilayer perceptron; patient care; pneumonia; predictive value; priority journal; prognosis; random forest; receiver operating characteristic; residual neural network; resnet 50 network; sensitivity and specificity; thorax radiography; validation study; vital sign; algorithm; computer assisted diagnosis; diagnostic imaging; pandemic; x-ray computed tomography; Image retrieval | English | 2021 | 2021-05 | 10.1016/j.media.2021.101993 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Liposomal irinotecan plus fluorouracil and leucovorin versus fluorouracil and leucovorin for metastatic biliarytract cancer after progression on gemcitabine plus cisplatin (NIFTY): a multicentre, open-label, randomised, phase 2b study | Background The prognosis of patients with advanced biliary tract cancer who have progressed on gemcitabine plus cisplatin is dismal. We aimed to investigate the efficacy and safety of second-line liposomal irinotecan plus fluorouracil and leucovorin in patients with metastatic biliary tract cancer that has progressed on gemcitabine plus cisplatin. Methods This multicentre, open-label, randomised, phase 2b (NIFTY) study was done at five academic institutions in South Korea and included patients aged 19 years or older with histologically or cytologically confirmed metastatic biliary tract cancer that had progressed on first-line gemcitabine plus cisplatin and an Eastern Cooperative Oncology Group performance status of 0 or 1. By use of an interactive web-based response system integrated with an electronic data capture system, patients were randomly assigned (1:1) using permuted blocks (block size 4) to receive either intravenous liposomal irinotecan (70 mg/m2 for 90 min) plus intravenous leucovorin (400 mg/m2 for 30 min) and intravenous fluorouracil (2400 mg/m2 for 46 h) every 2 weeks or leucovorin and fluorouracil only every 2 weeks, and were stratified by primary tumour site, previous surgery with curative intent, and participating centre. Study treatment was continued until the patient had disease progression or unacceptable toxicities, or withdrew consent. The primary endpoint was blinded independent central review (BICR)-assessed progression-free survival. The primary endpoint and safety were assessed in the full analysis set and the safety analysis set, respectively, both of which comprised all randomly assigned patients who received at least one dose of the study treatment. This trial is registered with ClinicalTrials.gov, NCT03524508, and enrolment is complete. Findings Between Sept 5, 2018, and Feb 18, 2020, 193 patients were screened for eligibility, of whom 174 (88 in the liposomal irinotecan plus fluorouracil and leucovorin group and 86 in the fluorouracil plus leucovorin group) were enrolled and included in the full analysis and safety analysis sets. At a median follow-up of 11.8 months (IQR 7.7-18.7), the median BICR-assessed progression-free survival was significantly longer in the liposomal irinotecan plus fluorouracil and leucovorin group (7.1 months, 95% CI 3.6-8.8) than in the fluorouracil and leucovorin group (1.4 months, 1.2-1.5; hazard ratio 0.56, 95% CI 0.39-0.81; p=0.0019). The most common grade 3-4 adverse events were neutropenia (21 [24%] of 88 in the liposomal irinotecan plus fluorouracil and leucovorin group vs one [1%] of 86 in the fluorouracil and leucovorin group) and fatigue or asthenia (11 [13%] vs three [3%]). Serious adverse events occurred in 37 (42%) patients receiving liposomal irinotecan plus fluorouracil and leucovorin and 21 (24%) patients receiving fluorouracil and leucovorin. There were no treatment-related deaths. Interpretation Adding liposomal irinotecan to fluorouracil and leucovorin significantly improved BICR-assessed progression-free survival in patients with advanced biliary tract cancer. Liposomal irinotecan plus fluorouracil and leucovorin could be considered a standard-of-care second-line therapy for advanced biliary tract cancer. Copyright (C) 2021 Elsevier Ltd. All rights reserved. | Yoo, Changhoon; Kim, Kyu-Pyo; Jeong, Jae Ho; Kim, Ilhwan; Kang, Myoung Joo; Cheon, Jaekyung; Kang, Byung Woog; Ryu, Hyewon; Lee, Ji Sung; Kim, Kyung Won; Abou-Alfa, Ghassan K.; Ryoo, Baek-Yeol | Univ Ulsan, Coll Med, Dept Oncol, Seoul, South Korea; Univ Ulsan, Clin Res Ctr, Asan Inst Life Sci, Coll Med, Seoul, South Korea; Univ Ulsan, Dept Clin Epidemiol & Biostat, Coll Med, Seoul, South Korea; Univ Ulsan, Asan Image Metr, Asan Inst Life Sci, Clin Res Ctr,Coll Med, Seoul, South Korea; Univ Ulsan, Asan Med Ctr, Ulsan Univ Hosp, Coll Med, Seoul, South Korea; Univ Ulsan, Div Hematol & Oncol, Ulsan Univ Hosp, Coll Med,Dept Internal Med, Seoul, South Korea; Inje Univ, Haeundae Paik Hosp, Dept Internal Med, Div Oncol,Coll Med, Busan, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Oncol Hematol, Daegu, South Korea; Chungnam Natl Univ, Chungnam Natl Univ Hosp, Dept Internal Med, Div Hematol & Oncol,Coll Med, Daejeon, South Korea; Mem Sloan Kettering Canc Ctr, Dept Med, 1275 York Ave, New York, NY 10021 USA; Cornell Univ, Weill Med Coll, Dept Med, New York, NY 10021 USA | Lee, Kee-Joon/AAA-4090-2022; Kim, Hyunho/GQH-5608-2022; Kim, In-Ryoung/AGF-2385-2022 | 22954694200; 7409319176; 57022763500; 57202402657; 57190689321; 57203287161; 28567838500; 56075661600; 57212925539; 56128365800; 8660213800; 6603026326 | yooc@amc.seoul.kr; | LANCET ONCOLOGY | LANCET ONCOL | 1470-2045 | 1474-5488 | 22 | 11 | SCIE | ONCOLOGY | 2021 | 54.433 | 1.4 | 10.34 | 2025-07-30 | 162 | 169 | TRACT CANCER; RETROSPECTIVE ANALYSIS; CHEMOTHERAPY; CHOLANGIOCARCINOMA; OXALIPLATIN; FAILURE | Adult; Aged; Aged, 80 and over; Antineoplastic Combined Chemotherapy Protocols; Biliary Tract Neoplasms; Cisplatin; Deoxycytidine; Disease Progression; Female; Fluorouracil; Humans; Irinotecan; Leucovorin; Male; Middle Aged; Neoplasm Metastasis; Progression-Free Survival; Republic of Korea; Survival Rate; Topoisomerase I Inhibitors; cisplatin; fluoropyrimidine; fluorouracil; folinic acid; gemcitabine; irinotecan sucrosofate; oxaliplatin; palonosetron; antineoplastic agent; cisplatin; deoxycytidine; DNA topoisomerase inhibitor; fluorouracil; folinic acid; gemcitabine; irinotecan; abdominal pain; acute kidney failure; adult; aged; Article; asthenia; biliary tract cancer; bleeding; brain infarction; cancer growth; cancer mortality; cancer survival; chemotherapy induced nausea and vomiting; controlled study; diarrhea; disease control; drug efficacy; drug safety; drug withdrawal; dyspnea; ECOG Performance Status; European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30; fatigue; febrile neutropenia; female; follow up; human; interstitial pneumonia; major clinical study; male; metastatic biliary tract cancer; metastatic biliary tract cancer; multicenter study; objective response rate; overall survival; pancytopenia; phase 2 clinical trial; pneumonia; progression free survival; quality of life; randomized controlled trial; sepsis; South Korea; treatment duration; treatment response; biliary tract tumor; clinical trial; disease exacerbation; metastasis; middle aged; mortality; pathology; survival rate; very elderly | English | 2021 | 2021-11 | 10.1016/s1470-2045(21)00486-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Cycle-life prediction model of lithium iron phosphate-based lithium-ion battery module | The aging rate of Li-ion batteries depends on temperature and working conditions and should be studied to ensure an efficient supply and storage of energy. In a battery module, the thermal energy released by the exothermic reaction occurring within each cell is transferred to its adjacent cells, thus leading to a higher internal temperature than that of a single cell. Therefore, there exists a considerable difference between the internal and external temperatures of the module. Thus, it is essential to study the battery module temperature when developing its cycle life (capacity fade) model. In this study, an accelerated cycle life experiment is conducted on an 8-cell LiFePO4 battery. Eight thermocouples were placed internally and externally at selected points to measure the internal and external temperatures within the battery module. This model is developed based on the Arrhenius equation, which explains the effect of temperature according to its spatial position. The models are developed according to the ambient, external, internal, and total average temperatures generated in the battery module, which are verified with the collected experimental results. The results indicate that the total average temperature-based model exhibits the lowest average percentage error when compared with the experimental data. | Jung, Dae Hyun; Kim, Dong Min; Park, Jonghoo; Kim, Sang-il; Kim, TaeWan | Jeonbuk Natl Univ, Dept Elect Engn, Jeonju 54896, South Korea; Jeonbuk Natl Univ, Smart Grid Res Ctr, Jeonju 54896, South Korea; Kyungpook Natl Univ, Dept Elect Engn, Daegu, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu, South Korea; Univ Seoul, Dept Mat Sci & Engn, Seoul, South Korea | MIN, KIM/J-1509-2018 | 57218711034; 59782461500; 57196408322; 36171889900; 57199878285 | twkim@jbnu.ac.kr; | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | INT J ENERG RES | 0363-907X | 1099-114X | 45 | 11 | SCIE | ENERGY & FUELS;NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 4.672 | 1.5 | 0.4 | 2025-07-30 | 7 | 7 | Arrhenius equation; capacity fade; cycle life model; Lithium‐ ion battery module; temperature effect | THERMAL RUNAWAY; BLENDED SPINEL; CAPACITY FADE; CELLS; CALENDAR; TEMPERATURE; ENERGY | Arrhenius equation; capacity fade; cycle life model; Lithium-ion battery module; temperature effect | Battery Pack; Charging (batteries); Digital storage; Energy storage; Iron compounds; Lithium compounds; Phosphorus compounds; Predictive analytics; Thermocouples; Arrhenius equation; Cycle life predictions; Effect of temperature; External temperature; Internal temperature; Lithium iron phosphates; Module temperature; Spatial positions; Lithium-ion batteries | English | 2021 | 2021-09 | 10.1002/er.6895 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Design and optimization ofGaN-based betavoltaic cell for enhanced output power density | In this work, we designed and optimized a gallium nitride (GaN)-based betavoltaic (BV) cell using an AlGaN back-barrier layer and finger structure for improving the output power density. A short-circuit current density (J(SC)) and an open-circuit voltage (V-OC) of the BV cells associated with an output power density were investigated by using electron-beam (e-beam) irradiation. The device with the Al0.25Ga0.75N back-barrier layer exhibited an enhancedJ(SC)because the potential barrier with a high height reduced excess carriers moving to the substrate region. The finger structure of the proposed BV cells was optimized by changing parameters such as the width of the intrinsic GaN region (Wi-GaN) and heights of the p-GaN and n-GaN regions (H(p-GaN)andH(n-GaN)). The optimized BV cell with aW(i-GaN)of 100 nm, aH(n-GaN)of 100 nm, and aH(p-GaN)of 200 nm obtained a higherJ(SC)compared to that of the conventional p-i-n BV cell because an optimum structure resulted in a wide depletion area, which was involved in the improved charge collection. As a result, the output power density of the proposed BV cell was enhanced by 14.8% than that of the conventional BV because of the improvedJ(SC). The proposed structure shows a high potential for BV cells with a high-power conversion efficiency. | Yoon, Young Jun; Lee, Jae Sang; Kang, In Man; Lee, Jung-Hee; Kim, Dong-Seok | Korea Atom Energy Res Inst, Korea Multipurpose Accelerator Complex, Gyeongju 38180, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu, South Korea | 57218864885; 7601467686; 7203062678; 57196140713; 55642581500 | dongseokkim@kaeri.re.kr; | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | INT J ENERG RES | 0363-907X | 1099-114X | 45 | 1 | SCIE | ENERGY & FUELS;NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 4.672 | 1.5 | 0.4 | 2025-07-30 | 8 | 6 | back-barrier layer; betavoltaic cell; finger structure; gallium nitride; output power density | GAN | back-barrier layer; betavoltaic cell; finger structure; gallium nitride; output power density | Aluminum gallium nitride; Cells; Conversion efficiency; Cytology; III-V semiconductors; Nuclear batteries; Open circuit voltage; Semiconductor alloys; Structural optimization; Changing parameter; Design and optimization; Gallium nitrides (GaN); High power conversion; Optimum structures; Output power density; Potential barriers; Substrate regions; Gallium nitride | English | 2021 | 2021-01 | 10.1002/er.5909 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Experimental and simulation study of power performance improvement of GaN PIN betavoltaic cell | We have demonstrated the gallium nitride (GaN)-based betavoltaic (BV) cells with PN and PIN junction to investigate the relationship between the intrinsic GaN (i-GaN) layer and power performance of BV cells. A short-circuit current (I-SC) and an open-circuit voltage (V-OC) of the fabricated BV cells were evaluated by using an electron-beam (e-beam) irradiation. The cell with PIN junction exhibited an improved I-SC and V-OC compared to the cell with PN junction. This is because the additional 200 nm-thick i-GaN layer extends the depletion region of BV cell, resulting in improved charge collection. When a 17 kV e-beam irradiated into the fabricated GaN PIN BV cell, the device exhibited an I-SC of 1.86 mu A, a V-OC of 2.23 V, a maximum output power (P-max.out) of 2.74 mu W, and a power conversion efficiency (PCE) of 4.5%, respectively. This PCE is the best value among GaN BV cell researches using 17 keV e-beam irradiation. To study a role of i-GaN layer in PIN BV cell, the technology computer-aided design (TCAD) simulator was implemented. The effect of layer thickness and native defects in GaN material on the power performance of BV cell was evaluated. The power performance of PIN BV cell was degraded by introducing native defects in layers due to an increase of recombination rate. The BV cell with 500 nm-thick i-GaN layer exhibited better power performance when the electrons with average energy of Ni-63 irradiated into device because the maximum absorption rate of electrons was well positioned in the depletion region. The experimental and simulated results showed that the introduction of i-GaN layer and the optimization of parameters such as thickness and crystalline quality were important to improve the power performance of BV cells. | Kim, Dong-Seok; Yoon, Young Jun; Lee, Jae Sang; Kang, In Man; Lee, Jung-Hee | Korea Atom Energy Res Inst, Korea Multipurpose Accelerator Complex, Accelerator Applicat Res Div, Gyeongju 38180, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu 41566, South Korea | 55642581500; 57218864885; 7601467686; 7203062678; 57196140713 | dongseokkim@kaeri.re.kr;jlee@ee.knu.ac.kr; | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | INT J ENERG RES | 0363-907X | 1099-114X | 45 | 12 | SCIE | ENERGY & FUELS;NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 4.672 | 1.5 | 0.4 | 2025-07-30 | 10 | 9 | betavoltaic cell; depletion region; e-beam irradiation; GaN; PIN junction; PN junction; TCAD | N-DIODES; DESIGN; OPTIMIZATION; ENERGY; MODEL | betavoltaic cell; depletion region; e-beam irradiation; GaN; PIN junction; PN junction; TCAD | Cells; Conversion efficiency; Defects; Electronic design automation; Gallium nitride; III-V semiconductors; Irradiation; Nanocrystalline materials; Nuclear batteries; Open circuit voltage; Crystalline quality; Gallium nitrides (GaN); Maximum output power; Optimization of parameters; Power conversion efficiencies; Recombination rate; Simulation studies; Technology computer aided design; Cytology | English | 2021 | 2021-10-10 | 10.1002/er.7011 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Quorum quenching, biological characteristics, and microbial community dynamics as key factors for combating fouling of membrane bioreactors | Membrane fouling is a major challenge in membrane bioreactors (MBRs) for wastewater treatment. This study investigates the effects of disturbance and solid retention time (SRT) on quorum-quenching (QQ) MBRs relative to antifouling efficacy and microbial community change. The fouling rate increases with the applied disturbance at a short SRT, counteracting the antifouling effect of QQ; however, it decreases with QQ at a long SRT. The microbial community appears to be responsible for such MBR behaviors. Several bacterial species belonging to the biofilm-forming group are dominant after disturbance, resulting in substantive membrane fouling. However, the balance between the bacterial species plays a key role in MBR fouling propensity when stabilized. Koflera flava becomes dominant with QQ, leading to reduced membrane fouling. QQ makes the MBR microbial community more diverse, while lowering its richness. QQ with long SRT would be a favorable operational strategy for effective MBR fouling control. | Shah, Syed Salman Ali; De Simone, Luigi; Bruno, Giuseppe; Park, Hyeona; Lee, Kibaek; Fabbricino, Massimiliano; Angelidaki, Irini; Choo, Kwang-Ho | Kyungpook Natl Univ, Dept Environm Engn, Daegu, South Korea; Univ Naples Federico II, Dept Civil Architectural & Environm Engn, Naples, Italy; Kyungpook Natl Univ, Adv Inst Water Ind, Daegu, South Korea; Chonnam Natl Univ, Dept Biotechnol & Bioengn, Gwangju, South Korea; Tech Univ Denmark, Dept Chem Engn, Lyngby, Denmark | Shah, Syed Salman Ali/JCE-1663-2023; Choo, Kwang-Ho/A-3456-2016; Angelidaki, Irini/AAX-2562-2020 | 57215722996; 7006807680; 57222491517; 57213039681; 55845961700; 21740838800; 6603674728; 7102083272 | chookh@knu.ac.kr; | NPJ CLEAN WATER | NPJ CLEAN WATER | 2059-7037 | 4 | 1 | SCIE | ENGINEERING, CHEMICAL;ENVIRONMENTAL SCIENCES;WATER RESOURCES | 2021 | 12.19 | 1.5 | 1.48 | 2025-07-30 | 26 | 28 | Bacteria (microorganisms); Bacteria; Bioreactors; Membrane fouling; Quenching; Wastewater treatment; Applied disturbances; Biological characteristic; Fouling propensities; Membrane bioreactor; Microbial communities; Microbial community dynamics; Operational strategies; Solid retention time; antifouling; bioreactor; community dynamics; environmental disturbance; membrane; microbial community; Membranes | English | 2021 | 2021-03-19 | 10.1038/s41545-021-00110-9 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Synthesis of hydrophilic hierarchical carbon via autonomous SiO2 etching by fluorinated polymers for aqueous supercapacitor | Carbon electrodes for aqueous supercapacitors should have extensive surface area for higher energy and surface morphology enabling electrolyte ions to access the entire surface. The multiple micropores below 2 nm enhance the specific surface area, while mesopores of 2-50 nm allow easy ion transport through porous structure. Here, we synthesize a hierarchical carbon via both a polyvinylidene fluoride precursor directly converting to microporous carbon during pyrolysis and a sol-gel templating route producing the mesopore. Polytetrafluoroethylene is added to induce mesopore by thermal decomposition. Both the fluorine-containing polymers autonomously remove the silica template using evolving HF and C2F4 gas during pyrolysis. The dimethylformamide polar solvent helps dissolve both polymers and form alkaline condition beneficial for sol-gel process. The sol-gel-processed carbon exhibits wide pore ranges of over 50 nm, leading to surface area of 1230 m(2) g(-1) with capacitance of 105 F g(-1) in neutral Na2SO4. The sol-gel-route develops the hydrophilic surface, effectively reducing the electrode resistance in aqueous electrolyte and promoting porous surface utilization. The capacitance retention of 78% exhibits at 10-fold faster rate due to the hierarchically structured pore and hydrophilic surface. Both the energy and power densities are superior to commercial activated carbon with larger area. | Son, In-Sik; Yi, Seong-Hoon; Chun, Sang-Eun | Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Ind Technol Adv, Daegu, South Korea | Yi, Seonghoon/HGC-6912-2022 | 57212529007; 14008383000; 36801080300 | sangeun@knu.ac.kr; | INTERNATIONAL JOURNAL OF ENERGY RESEARCH | INT J ENERG RES | 0363-907X | 1099-114X | 45 | 9 | SCIE | ENERGY & FUELS;NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 4.672 | 1.5 | 0.73 | 2025-07-30 | 13 | 12 | hierarchical mesoporous carbon; hydrophilicity; polytetrafluoroethylene (PTFE); polyvinylidene fluoride (PVDF); sol‐ gel process | hierarchical mesoporous carbon; hydrophilicity; polytetrafluoroethylene (PTFE); polyvinylidene fluoride (PVDF); sol-gel process | Capacitance; Chlorine containing polymers; Dimethylformamide; Electrodes; Electrolytes; Etching; Fluorine containing polymers; Hydrophilicity; Microporosity; Morphology; Pyrolysis; Silica; Sodium sulfate; Supercapacitor; Surface morphology; Alkaline conditions; Capacitance retention; Commercial activated carbons; Electrode resistance; Fluorinated polymers; Hydrophilic surfaces; Micro-porous carbons; Polyvinylidene fluorides; Sol-gel process | English | 2021 | 2021-07 | 10.1002/er.6717 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Beyond strength-ductility trade-off: 3D interconnected heterostructured composites by liquid metal dealloying | A breakthrough in the strength and ductility trade-off is crucial for the development of advanced metallic materials. Herein, we present a novel heterostructured composite composed of immiscible magnesium (Mg) and ferrochrome (FeCr) with a 3D interconnected morphology and synthesized by liquid metal dealloying. Soft Mg and hard FeCr zones mutually interlock with each other. This unique interpenetrating-phase configuration leads to a significant alternation of their intrinsic mechanical properties, especially in the soft Mg zone. It causes a strong forest hardening effect, resulting in a high initial dislocation density, and the surrounding hard zones create hydrostatic pressure at the soft zone under tension. The measured yield strength of the composite is close to the upper rule of mixture while its tensile elongation is larger than that of the mixture. These outstanding mechanical properties originate from the synergetic interaction between the soft and hard zones through the immiscible interface zone. The current 3D interconnected heterogeneous composite acts a guideline for the design of advanced materials possessing physical properties beyond expectations. | Jeong, Yeon Beom; Wada, Takeshi; Joo, Soo-Hyun; Park, Jeong-Min; Moon, Jongun; Kim, Hyoung Seop; Okulov, Ilya Vladimirovich; Park, Sung Hyuk; Lee, Jeong Hun; Kim, Ki Buem; Kato, Hidemi | Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi, Japan; Tohoku Univ, Inst Mat Res, Sendai, Miyagi, Japan; Dankook Univ, Dept Mat Sci & Engn, 119 Dandae Ro, Cheonan 31116, South Korea; Pohang Univ Sci & Technol, Pohang, South Korea; Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620000, Russia; Leibniz Inst Mat Engn IWT, Badgasteiner Str 3, D-28359 Bremen, Germany; Univ Bremen, Fac Prod Engn, Badgasteiner Str 1, D-28359 Bremen, Germany; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea; Korea Inst Ind Technol, Adv Forming Proc R&D Grp, Ulsan 44413, South Korea; Sejong Univ, Dept Nanotechnol & Adv Mat Engn, Seoul, South Korea | joo, soohyun/E-8292-2013; Moon, Jongun/AAK-1248-2021; Kim, Dahee/IAM-6955-2023; Park, Jeong Min/AIF-3627-2022; Okulov, Ilya/AAE-6253-2020; Kim, Hyoung Seop/C-2166-2009; Park, Sung-Hyuk/AAE-6726-2022; Kato, Hidemi/B-2492-2015; Wada, Takeshi/B-2431-2015; Joo, Soo-Hyun/E-8292-2013; Lee, Jeong Hun/KFS-8195-2024; Jeong, YB/AAP-7174-2021 | 57197872330; 26434461100; 35738843100; 57200701307; 57217628979; 55921490700; 55900605000; 54786002500; 54785958500; 9242871000; 7406493656 | jjsh83@dankook.ac.kr;hikato@imr.tohoku.ac.jp; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 225 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2021 | 11.322 | 1.6 | 1.95 | 2025-07-30 | 37 | 37 | Liquid metal dealloying; Heterogeneous composites; Geometrically necessary dislocations; Finite element method; Mechanical behavior | MECHANICAL-PROPERTIES; HYDROSTATIC-PRESSURE; DEFORMATION-BEHAVIOR; NONBASAL SLIP; GRAIN-SIZE; MG; PLASTICITY; EVOLUTION; MAGNESIUM; STRAIN | Finite element method; Geometrically necessary dislocations; Heterogeneous composites; Liquid metal dealloying; Mechanical behavior | Binary alloys; Chromium alloys; Ductility; Economic and social effects; Fabrication; Hydrostatic pressure; Iron alloys; Liquid metals; Magnesium; Mixtures; Dealloying; Element method; Geometrically necessary dislocations; Heterogeneous composites; Liquid metal dealloying; Mechanical; Mechanical behavior; Property; Strength and ductilities; Trade off; Finite element method | English | 2021 | 2021-11-15 | 10.1016/j.compositesb.2021.109266 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | Article | Characteristic evaluation and finite element analysis of glass fiber/recycled polyester thermoplastic composites by cross-sectional shape of glass fiber | In this paper, properties of glass fiber-reinforced thermoplastic polymers (GFRTP) were evaluated using recycled polyester (rPET) for injection molding bicycle frame. The effect on thermal and mechanical properties of rPET reinforced glass chop fiber according to fiber cross section and fiber content ratio were studied. The crystallization temperature of glass fiber (GF)/rPET, a glass fiber added thermoplastic composite, was higher than the crystallization temperature of rPET pellet without a glass fiber, and the shape of the exothermic curve was sharper. Mechanical characteristics of a GF/rPET thermoplastic composites has been increased by increasing fiber contents, than above a certain level did not longer increased. And mechanical properties of flat glass fiber reinforced rPET with low void volume were most excellent. In order to prove the validity of the experimental results, finite element analysis of thermoplastic composite was performed by Digimat and Abaqus to compare the experimental values according to the cross sectional shape and volume fraction of glass fiber. The results of finite element analysis showed a similar tendency between the experimental results and the analysis results. | Sim, Jee-hyun; Yu, Seong-Hun; Yoon, Hyun-Sung; Kwon, Dong-Jun; Lee, Do-Hyun; Bae, Jin-Seok | Kyungpook Natl Univ, Dept Text Syst Engn, Daegu, South Korea; Korea Dyeing & Finishing Technol Inst, DYETEC Inst, Daegu, South Korea | maxwell02@naver.com;jbae@knu.ac.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 223 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2021 | 11.322 | 1.6 | 17 | rPET (recycled polyester); Thermo-plastic composites; Glass chopped fiber; Finite element analysis; Compounding | INTERFACIAL SHEAR-STRENGTH; CARBON; AGGREGATION; COMPOUND | English | 2021 | 2021-10-15 | 10.1016/j.compositesb.2021.109095 | 바로가기 | 바로가기 | 바로가기 | |||||||||||
| ○ | ○ | Article | Investigation of impact resistance performance of carbon fiber reinforced polypropylene composites with different lamination to applicate fender parts | Thermoplastic composites are rapidly emerging as alternative materials for auto parts owing to recyclability as well as excellent stiffness- and strength-to weight ratios. In this study, an optimal stacking sequence using twillweave carbon fiber-reinforced polypropylene (CF/PP) prepregs and random fiber-reinforced polypropylene (RFP) sheets were investigated for the fabrication of an automobile fender. The lamination consisting of CF/PP only incurred imperfect resin impregnation. RFP insertion between CF/PP layers improved the resin impregnation. The hybrid stacking sequence not only reduced internal void contents but also increased the flexural and impact strength of the composite laminate. Using the optimal stacking sequence, a real-scale composite fender was fabricated and impact tests were performed. The test results were compared with the ones from an existing steel fender. In case of the steel fender, permanent deformation was observed even in one attempt, while no visible damage was found from the composite fender even after five consecutive impact tests. | Kwon, Dong-Jun; Kim, Neul-Sae-Rom; Jang, Yeong-Jin; Yang, Seong-Baek; Yeum, Jeong-Hyun; Jung, Ji-Hoon; Nam, Sang Yong; Park, Young-Bin; Ji, Wooseok | Gyeongsang Natl Univ, Res Inst Green Energy Convergence Technol, Dept Mat Engn & Convergence Technol, Jinju, South Korea; Ulsan Natl Inst Sci & Technol, Dept Mech Engn, Ulsan, South Korea; Large Co Ltd, R&D Dept, Seoul, South Korea; Kyungpook Natl Univ, Dept Biofibers & Mat Sci, Daegu, South Korea; Ajin Ind Co Ltd, R&D Dept, Gyongsan, South Korea | Kim, Young-O/AAG-7841-2019; Ji, Wooseok/V-3918-2018; Yang, Seong/AAP-1745-2020; Park, Young-Bin/F-4762-2010 | 36550312000; 57222517352; 57222515591; 56258526300; 6602257098; 57222516487; 57189391782; 8383966300; 57075668800 | walden@gnu.ac.kr;wsji@unist.ac.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 215 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2021 | 11.322 | 1.6 | 1.75 | 2025-07-30 | 28 | 31 | Fender; Polypropylene; Thermoplastic composite; Commingled yarn; Impact property | EPOXY COMPOSITES; BEHAVIOR; FAILURE; DAMAGE; DCPD | Commingled yarn; Fender; Impact property; Polypropylene; Thermoplastic composite | Automobile manufacture; Impact strength; Impregnation; Laminated composites; Laminating; Polypropylenes; Reinforced plastics; Reinforcement; Carbon fiber reinforced; Commingled yarn; Fender; Fiber reinforced polypropylene; Impact property; Impact resistance performance; Polypropylene; Resin impregnation; Stacking sequence; Thermoplastic composite; Resins | English | 2021 | 2021-06-15 | 10.1016/j.compositesb.2021.108767 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Kinetic motion sensors based on flexible and lead-free hybrid piezoelectric composite energy harvesters with nanowires-embedded electrodes for detecting articular movements | Self-powered motion sensors have drawn many attentions for the last decade because it can be usefully applied to not only smart clothing and biomedical applications but also future remote controlling robotics systems. In this study, we develop a ceramic-polymer hybrid lead-free piezoelectric composite-based device to fabricate excellent flexible energy harvesters and kinetic motion sensing gloves. With the use of a composite composed of (K, Na)NbO3 (KNN) piezoelectric particles and poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] matrix, the fabricated flexible energy harvester generates an open-circuit voltage of similar to 5 V and short-circuit current of similar to 1 mu A under mechanical bending deformations. Moreover, the advantages of the P(VDF-TrFE) matrix for piezoelectric composite-based devices are validated by the results of the finite element method (FEM) simulation. Based on the hybrid piezoelectric composite, stable and reliable self-powered kinetic motion sensors are fabricated to monitor tiny biomechanical motions, i.e., the angles of finger hinges and various hand gestures. Our development successfully indicates that the hybrid lead-free piezoelectric composite can be applied to the active component of self-powered kinetic sensors for future low-power electronic motion detector. | Ham, Seong Su; Lee, Gyoung-Ja; Hyeon, Dong Yeol; Kim, Yeon-gyu; Lim, Yeong-won; Lee, Min-Ku; Park, Jin-Ju; Hwang, Geon-Tae; Yi, Seonghoon; Jeong, Chang Kyu; Park, Kwi-Il | Kyungpook Natl Univ, Sch Mat Sci & Engn, 80 Daehak Ro, Daegu 41566, South Korea; Korea Atom Energy Res Inst, Smart Struct Safety & Prognosis Res Div, 111 Daedeok Daero,989 Beon Gil, Daejeon 34057, South Korea; Jeonbuk Natl Univ, Div Adv Mat Engn, 567 Baekje Daero, Jeonju 54896, Jeonbuk, South Korea; Jeonbuk Natl Univ, Dept Energy Storage Convers Engn, Grad Sch, 567 Baekje Daero, Jeonju 54896, Jeonbuk, South Korea; Jeonbuk Natl Univ, Hydrogen & Fuel Cell Res Ctr, 567 Baekje Daero, Jeonju 54896, Jeonbuk, South Korea; Pukyong Natl Univ, Dept Mat Sci & Engn, 45 Yongso Ro, Busan 48513, South Korea | Park, Kwiil/LKN-9445-2024; Hyeon, Dong Yeol/HNR-5711-2023; Kim, Hyeong-U/AAV-2668-2021; Yi, Seonghoon/HGC-6912-2022; Jeong, Chang Kyu/ADT-8127-2022 | 57220094093; 8588965200; 57209099464; 57196173366; 57222112893; 59302175900; 24399310900; 36704574900; 14008383000; 55961876600; 35280874200 | kipark@knu.ac.kr;ckyu@jbnu.ackr;ckyu@jbnu.ac.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 212 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2021 | 11.322 | 1.6 | 4.44 | 2025-07-30 | 69 | 73 | Self-powered sensor; Piezoelectric composite; Lead-free; Energy harvester; Flexible; Motion sensor | NANOCOMPOSITE GENERATOR; LARGE-AREA; CRYSTALLINITY; NANOPARTICLES; PARTICLES; DEVICE | Energy harvester; Flexible; Lead-free; Motion sensor; Piezoelectric composite; Self-powered sensor | Energy harvesting; Flexible electronics; Fluorine compounds; Kinetics; Medical applications; Motion sensors; Niobium compounds; Open circuit voltage; Piezoelectric materials; Remote control; Sodium compounds; Biomechanical motions; Biomedical applications; Embedded electrodes; Finite element method simulation; Lead-free piezoelectrics; Piezoelectric composite; Poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)]; Remote controlling; Piezoelectricity | English | 2021 | 2021-05-01 | 10.1016/j.compositesb.2021.108705 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Numerical method for the strength of two-dimensional concrete struts | For the reliable strut-and-tie model (STM) design of disturbed regions of concrete members, structural designers must accurately determine the strength of concrete struts to check the strength conditions of a selected STM el and the anchorage of reinforcing bars in nodal zones. In this study, the author proposed a consistent numerical method for strut strength, applicable to all two-dimensional STMs. The proposed method includes the effects of a biaxial stress state associated with tensile strains in reinforcing bars crossing a strut, deviation angle between strut orientation and compressive principal stress flow, and degree of confinement provided by reinforcement. The author examined the method's validity through the STM prediction of the ultimate strengths of 517 reinforced concrete (RC) deep beams, 24 RC panels, and 258 RC corbels, all tested to failure. | Yun, Y. M. | Kyungpook Natl Univ, Sch Architectural Civil Environm & Energy Engn, 80 Daehak Ro, Daegu 41566, South Korea | 7201731110 | ymyun@knu.ac.kr; | COMPUTERS AND CONCRETE | COMPUT CONCRETE | 1598-8198 | 1598-818X | 28 | 6 | SCIE | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS;CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL;MATERIALS SCIENCE, CHARACTERIZATION & TESTING | 2021 | 7.628 | 1.6 | 0.32 | 2025-07-30 | 2 | 3 | concrete strut; disturbed region; strut strength; structural concrete; two-dimensional strut-and-tie model | RC DEEP BEAMS; SHEAR-STRENGTH; TIE-MODEL; BEHAVIOR; DESIGN; REINFORCEMENT; PERFORMANCE; CORBEL; STEEL | Concrete strut; Disturbed region; Structural concrete; Strut strength; Two-dimensional strut-and-tie model | Numerical methods; Reinforced concrete; Struts; Concrete members; Concrete struts; Disturbed region; Modeling designs; Strength of concrete; Structural concretes; Strut strength; Strut-and-tie model; Two-dimensional; Two-dimensional strut-and-tie model; Bars (metal) | English | 2021 | 2021-12 | 10.12989/cac.2021.28.6.621 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Radar and ground-level measurements of precipitation collected by the Ecole Polytechnique Federale de Lausanne during the International Collaborative Experiments for PyeongChang 2018 Olympic and Paralympic winter games | This article describes a 4-month dataset of precipitation and cloud measurements collected during the International Collaborative Experiments for PyeongChang 2018 Olympic and Paralympic winter games (ICE-POP 2018). This paper aims to describe the data collected by the Environmental Remote Sensing Laboratory of the Ecole Polytechnique Federale de Lausanne. The dataset includes observations from an X-band dual-polarisation Doppler radar, a W-band Doppler cloud profiler, a multi-angle snowflake camera and a two-dimensional video disdrometer (https://doi.org/10.1594/PANGAEA.918315, Gehring et al., 2020a). Classifications of hydrometeor types derived from dual-polarisation measurements and snowflake photographs are presented. The dataset covers the period from 15 November 2017 to 18 March 2018 and features nine precipitation events with a total accumulation of 195 mm of equivalent liquid precipitation. This represents 85 % of the climatological accumulation over this period. To illustrate the available data, measurements corresponding to the four precipitation events with the largest accumulation are presented. The synoptic situations of these events were contrasted and influenced the precipitation type and accumulation. The hydrometeor classifications reveal that aggregate snowflakes were dominant and that some events featured significant riming. The combination of dual-polarisation variables and high-resolution Doppler spectra with ground-level snowflake images makes this dataset particularly suited to study snowfall microphysics in a region where such measurements were not available before. | Gehring, Josue; Ferrone, Alfonso; Billault-Roux, Anne-Claire; Besic, Nikola; Ahn, Kwang Deuk; Lee, GyuWon; Berne, Alexis | Ecole Polytech Fed Lausanne EPFL, Environm Remote Sensing Lab, Lausanne, Switzerland; Meteo France, Ctr Meteorol Radar, Toulouse, France; Korea Meteorol Adm, Numer Modeling Ctr, Numer Data Applicat Div, Seoul, South Korea; Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Daegu, South Korea | Ferrone, Alfonso/JQI-6190-2023 | 56539575600; 57221256122; 57221996299; 56510058800; 57189992426; 7404852271; 8573340700 | alexis.berne@epfl.ch; | EARTH SYSTEM SCIENCE DATA | EARTH SYST SCI DATA | 1866-3508 | 1866-3516 | 13 | 2 | SCIE | GEOSCIENCES, MULTIDISCIPLINARY;METEOROLOGY & ATMOSPHERIC SCIENCES | 2021 | 11.815 | 1.6 | 1.11 | 2025-07-30 | 12 | 15 | 2-DIMENSIONAL VIDEO DISDROMETER; BAND POLARIMETRIC RADAR; HYDROMETEOR CLASSIFICATION; DUMONT DURVILLE; SNOW PARTICLES; ADELIE LAND; RADIOMETER; MOUNTAIN; CLOUDS; IMAGES | Kangwon; Pyeongchang; South Korea; data set; Doppler radar; Olympic Games; precipitation assessment; remote sensing | English | 2021 | 2021-02-15 | 10.5194/essd-13-417-2021 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Rational construction of CeO2?ZrO2@MoS2 hybrid nanoflowers for enhanced sonophotocatalytic degradation of naproxen: Mechanisms and degradation pathways | This study proposed a novel heterogeneous sonophotocatalytic system to effectively treat pharmaceutical wastewater employing molybdenum disulfide (MoS2) decorated ceria (CeO2)-zirconia (ZrO2) ternary hybrid nanoflowers (CZx/100 M). The generation of dominant oxidizing species, both radical and nonradical, was deeply scrutinized under ultrasound (US) irradiation coupled with visible-light by electron spin resonance spectroscopy analysis and scavenging experiments, for the first time. Interestingly, the pairing of US with visiblelight illumination in a sonophotocatalytic degradation system resulted in 96% degradation efficiency of naproxen (NPX) within 40 min, which confirmed that excellent synergistic effect of sono- and photocatalytic mechanisms in the presence of 0.5 g/L sonophotocatalyst at pH 5.8. The sonophotocatalytic activity was also manifested at various reaction time, catalyst dose, solution pH, initial NPX concentrations, and US frequency and power and in the presence of various anions. The mechanism for the catalytic degradation of NPX is proposed in the US/Vis/ CZx/100 M system, and transformation products formed during the process were identified by an ultra-high performance liquid chromatography-mass spectrometry technique. | Talukdar, Kristy; Saravanakumar, Karunamoorthy; Kim, Yejin; Fayyaz, Aqsa; Kim, Gyuri; Yoon, Yeomin; Park, Chang Min | Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Univ South Carolina, Dept Civil & Environm Engn, 300 Main St, Columbia, SC 29208 USA | Karunamoorthy, Saravanakumar/Q-2005-2016; Park, Chang Min/CAA-8506-2022; Yoon, Yeomin/KDP-2253-2024 | 57217156139; 57223020778; 59052467200; 57217157699; 57222585103; 7402126688; 57209588953 | talukdarkristy@gmail.com;sravanan205@gmail.com;rysa12@naver.com;aqsafayyaz10@gmail.com;riri97@naver.com;YOONY@cec.sc.edu;cmpark@knu.ac.kr; | COMPOSITES PART B-ENGINEERING | COMPOS PART B-ENG | 1359-8368 | 1879-1069 | 215 | SCIE | ENGINEERING, MULTIDISCIPLINARY;MATERIALS SCIENCE, COMPOSITES | 2021 | 11.322 | 1.6 | 3.77 | 2025-07-30 | 64 | 69 | Ceria-zirconia; Molybdenum disulfide; Naproxen; Ultrasound; Visible-light | SONOCATALYTIC DEGRADATION; PHOTOCATALYTIC DEGRADATION; FACILE SYNTHESIS; HETEROJUNCTION PHOTOCATALYSTS; EFFICIENT DEGRADATION; METHYLENE-BLUE; NANOCOMPOSITE; PERFORMANCE; NANOSHEETS; REMOVAL | Ceria-zirconia; Molybdenum disulfide; Naproxen; Ultrasound; Visible-light | Cerium oxide; Electron spin resonance spectroscopy; High performance liquid chromatography; Layered semiconductors; Light; Magnetic moments; Mass spectrometry; Molybdenum compounds; Nanoflowers; Photodegradation; Ultrasonic applications; Wastewater treatment; Zirconia; CeO$-2$; CeO$-2$/-ZrO$-2$; Ceria-zirconia; Degradation pathways; Molybdenum disulfide; MoS$-2$; Naproxens; Pharmaceutical wastewater; Rational construction; Visible light; Sulfur compounds | English | 2021 | 2021-06-15 | 10.1016/j.compositesb.2021.108780 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
페이지 이동: