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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 | Association of retroperitoneal fibrosis with malignancy and its outcomes | Introduction Retroperitoneal fibrosis (RPF) is characterized by a highly fibrotic retroperitoneal mass and encompasses the idiopathic form and secondary to malignancies. Because we have limited knowledge whether RPF is associated with malignancy, we aimed to investigate the relationship between RPF and malignancy and to compare the characteristics and prognosis of cancers among patients with RPF. Methods Medical records of 111 patients diagnosed as having RPF were reviewed and 38 cases of cancer, confirmed by biopsy, were identified. Standardized incidence ratios (SIRs) were calculated for cancers and stratified according to cancer type and RPF-cancer diagnosis interval. Cancer characteristics and outcomes were compared between RPF-cancer diagnosis intervals. Results The average age at RPF diagnosis was 59.2 +/- 15.0 years, and 69.4% of the patients were male. The cancer SIRs in patients with RPF relative to age- and sex-matched individuals in the general population was 2.2 (1.6-3.1). SIRs of renal pelvis cancer and multiple myeloma were significantly higher than in the general population. When stratified by RPF-cancer intervals, the SIR for cancer was 9.9 within 1 year of RPF diagnosis, while no significant increase in the SIR was found after 1 year from RPF diagnosis. Cancer stage was more advanced at the time of diagnosis in patients within a 1-year interval for RPF than those with cancer within a >5-year interval, with a correspondingly increased mortality in the former patients. Conclusions RPF was significantly associated with malignancy, particularly those diagnosed within 1 year of RPF diagnosis. Cancer stages at diagnosis were more advanced and the mortality rate was higher in patients within a 1-year interval between RPF and cancer diagnosis than in those with a >5-year interval between diagnoses. | Lee, Sang Jin; Eun, Jung Su; Kim, Min Jung; Song, Yeong Wook; Kang, Young Mo | Kyungpook Natl Univ, Sch Med, Div Rheumatol, 130 Dongdeok Ro, Daegu 41944, South Korea; Seoul Natl Univ, Dept Mol Med & Biopharmaceut Sci, Grad Sch Convergence Sci & Technol, Med Res Inst, Seoul, South Korea; Seoul Natl Univ, Coll Med, Med Res Inst, Seoul, South Korea; Seoul Natl Univ, Coll Med, Div Rheumatol, Seoul, South Korea | Li, Shaofu/O-2241-2019 | 57192516055; 57271176000; 58915113100; 55498729700; 26221798000 | ymkang@knu.ac.kr; | ARTHRITIS RESEARCH & THERAPY | ARTHRITIS RES THER | 1478-6354 | 1478-6362 | 23 | 1 | SCIE | RHEUMATOLOGY | 2021 | 5.606 | 22.1 | 0.62 | 2025-07-30 | 9 | 11 | Retroperitoneal fibrosis; Malignancy; Standardized incidence ratios; Survival | IMMUNOGLOBULIN G4-RELATED DISEASE; IGG4-RELATED DISEASE; CANCER; RISK; DIAGNOSIS | Malignancy; Retroperitoneal fibrosis; Standardized incidence ratios; Survival | Biopsy; Fibrosis; Humans; Male; Neoplasms; Prognosis; Retroperitoneal Fibrosis; adult; advanced cancer; age distribution; Article; cancer prognosis; cancer staging; cohort analysis; controlled study; disease association; female; human; major clinical study; male; malignant neoplasm; medical record review; mortality rate; outcome assessment; population research; retroperitoneal fibrosis; retrospective study; sex ratio; standardized incidence ratio; tumor biopsy; biopsy; fibrosis; neoplasm; prognosis; retroperitoneal fibrosis | English | 2021 | 2021-09-26 | 10.1186/s13075-021-02627-3 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Measuring void fraction in vertical air-water bubbly flow using echo intensity and visualization techniques | In this study, we measured void fractions in vertical air-water bubbly flow using echo intensity and visualization techniques. To check the reliability of the echo intensity technique, void fractions obtained from the visualization technique was used. For echo intensity technique, ultrasonic wave amplitudes were acquired at different gas flow rates, and the amplitudes varied with gas flow rates. The averaged value of the amplitude kept decreasing with increasing gas flow rates. Images of bubbly flow were captured by a high-speed camera to evaluate void fractions. The images were processing to obtain area-averaged void fractions, then averaged over time to obtain time-averaged void fractions. The amplitudes obtained from the echo intensity and void fraction obtained from visualization can be correlated in the form of an exponential function: as the amplitude increases, the void fraction exponentially decreases. | Na, Geoseong; Park, Ji-Hwan; Jo, Hongrae; Jo, Daeseong | Kyungpook Natl Univ, Grad Sch, Dept Mech Engn, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Mech Engn, 80 Daehak Ro, Daegu 41566, South Korea | 57223018703; 57219163330; 57194614170; 16424303000 | djo@knu.ac.kr; | PROGRESS IN NUCLEAR ENERGY | PROG NUCL ENERG | 0149-1970 | 1878-4224 | 136 | SCIE | NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 2.461 | 22.1 | 0.42 | 2025-07-30 | 7 | 7 | Bubbly flow; Echo intensity; Nonintrusive measurement; Visualization; Void fraction | GAS-LIQUID FLOW; PIPE | Bubbly flow; Echo intensity; Nonintrusive measurement; Visualization; Void fraction | Exponential functions; Flow of gases; Flow rate; Flow visualization; High speed cameras; Air-water; Bubbly flow; Different gas; Echo intensity; Gas flowrate; High-speed cameras; Non-intrusive measurements; Time-averaged; Visualization technique; Wave amplitudes; Void fraction | English | 2021 | 2021-06 | 10.1016/j.pnucene.2021.103731 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Oscillatory shear stress promotes angiogenic effects in arteriovenous malformations endothelial cells | Background Vascular endothelial cells (ECs) are subject to continuous shear stress due to blood circulation. Mechanical stress due to high shear flow can also cause arteriovenous malformation (AVM) when ECs respond hyper-sensitively to shear flow. This study was conducted to test the hypothesis that angiogenesis could be promoted in response to mechanical stress via regulation of pro-angiogenic factors in AVM cells. Methods ECs were extracted from the tissue samples from six AVM patients and six normal patients. Shear stress at 7 dynes/cm2 were applied for 24 h. Before and after application of shear stress to each group, RT-PCR was performed to access the expression levels of angiopoietin2(AGP2), aquaporin1(AQP1) and TGF beta R1. Immunofluorescences was also performed to evaluate the level of protein expressions. Results In both normal and AVM tissues, AGP2 and TGF beta R1 under the shear stress showed increased expression in the ECs compared to the non-sheared samples. When AVMs and normal arterial vasculature were compared, the expression levels of both AGP2 and TGF beta R1 in AVMs were higher when compared to normal arterial vasculature with or without shear stress. Immunofluorescence-based protein analysis also confirmed shear-induced AGP2 and TGF beta R1 in both samples of normal and AVM patients. Conclusions AVMs exhibited higher sensitivity to shear stress by producing higher expressions of some marked genes and proteins that regulate the endothelial functions upon exposure to shear stress. While the physiological mechanism for AVMs remain elusive, our study shows the plausibility of physical stress imposed by the shearing flow can cause the occurrence of AVMs. | Ryu, Jeong Yeop; Kim, Yun Hyun; Lee, Joon Seok; Lee, Jeong Woo; Oh, Eun Jung; Kim, Hyun Mi; Lee, Seok-Jong; Lee, Jongmin; Lee, Sang Yub; Huh, Seung; Kim, Ji Yoon; Im, Saewon; Chung, Ho Yun | Kyungpook Natl Univ, Sch Med, Dept Plast & Reconstruct Surg, 130 Dongdeok Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Dermatol, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Surg, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pediat, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Cell & Matrix Res Inst, 130 Dongdeok Ro, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Business Adm, Daegu 41944, South Korea | ; Lee, Jongmin/AAR-6361-2020; Lee, Woo Hyuk/HTT-3694-2023; LEE, JIN/Q-3108-2018; Lee, Jae-Hyun/ABE-3803-2020; Lee, Joo/C-3851-2013; Ryu, Jeong Yeop/GLQ-9419-2022 | 56366349400; 57212668506; 56496041000; 55892173700; 35746789300; 57261065200; 56013454400; 55689919700; 56016177400; 7101832929; 57205408095; 57222603671; 7404007181 | hy-chung@knu.ac.kr; | MOLECULAR MEDICINE | MOL MED | 1076-1551 | 1528-3658 | 27 | 1 | SCIE | BIOCHEMISTRY & MOLECULAR BIOLOGY;CELL BIOLOGY;MEDICINE, RESEARCH & EXPERIMENTAL | 2021 | 6.382 | 22.1 | 1.42 | 2025-07-30 | 24 | 23 | Shear strength; Arteriovenous malformations; Endothelial cells; Angiopoietin-2; Aquaporin 1; Receptor; Transforming growth factor-beta type I | Angiopoietin-2; Aquaporin 1; Arteriovenous malformations; Endothelial cells; Receptor; Shear strength; Transforming growth factor-beta type I | Adolescent; Adult; Angiopoietin-2; Aquaporin 1; Arteries; Arteriovenous Malformations; Child; Endothelial Cells; Female; Gene Expression; Humans; Male; Neovascularization, Pathologic; Receptor, Transforming Growth Factor-beta Type I; Stress, Mechanical; Young Adult; angiopoietin 2; aquaporin 1; transforming growth factor beta receptor 1; angiopoietin 2; ANGPT2 protein, human; AQP1 protein, human; aquaporin 1; TGFBR1 protein, human; adolescent; adult; angiogenesis; arteriovenous malformation; Article; child; clinical article; comparative study; controlled study; endothelium cell; female; gene expression; human; human tissue; immunofluorescence; male; mechanical stress; pathogenesis; physical stress; priority journal; protein analysis; protein expression; reverse transcription polymerase chain reaction; school child; shear stress; vascularization; young adult; arteriovenous malformation; artery; endothelium cell; genetics; mechanical stress; metabolism; neovascularization (pathology); pathology | English | 2021 | 2021-03-31 | 10.1186/s10020-021-00291-6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Radial BMD and serum CTX-I can predict the progression of carotid plaque in rheumatoid arthritis: a 3-year prospective cohort study | Objective Patients with rheumatoid arthritis (RA) are almost twice as likely to develop cardiovascular disease (CVD) as those without. However, traditional CVD risks have been shown to underperform in RA patients; thus, we aimed to identify new surrogate risk factors to better reflect their atherosclerotic burden. Methods A total of 380 RA patients with carotid atherosclerosis data were analyzed in this prospective cohort study. The primary outcome was carotid plaque progression over the 3-year follow-up period. Risk parameters assessed for the progression of carotid plaque were categorized as demographics, traditional CVD risks, RA-related risks, and bone parameters. Results The progression of carotid plaque was associated with the level of rheumatoid factor (p = 0.025), serum C-terminal telopeptide of type-I collagen (CTX-I) (p = 0.014), and femur and distal radius bone mass density (BMD) (p = 0.007 and 0.004, respectively), as well as traditional CVD risk factors. In multivariable analyses, the bone parameters of serum CTX-I and distal radius BMD proved to be independent predictors of the progression of carotid plaque along with hyperlipidemia, smoking, and baseline carotid plaque (all, p < 0.05). Adding both serum CTX-I and distal radius BMD increased the carotid plaque progression prediction model's percentage of explained variance from 24 to 30%. Conclusion High serum CTX-I and lower radius BMD, reflecting high bone turnover, were independent risk factors for the progression of carotid plaque in RA patients, implicating the direct or indirect role of bone metabolism on the atherosclerotic burden. | Han, Seungwoo; Kim, Na-Ri; Kang, Jong-Wan; Eun, Jung-Su; Kang, Young-Mo | Kyungpook Natl Univ, Div Rheumatol, Dept Internal Med, Sch Med, 680 Gukchaebosang Ro, Daegu 41944, South Korea; Daegu Fatima Hosp, Dept Internal Med, Div Rheumatol, Daegu, South Korea | ; Han, Seungwoo/R-5326-2019; Li, Shaofu/O-2241-2019 | 55246807000; 58113116000; 57212803692; 57271176000; 26221798000 | ymkang@knu.ac.kr; | ARTHRITIS RESEARCH & THERAPY | ARTHRITIS RES THER | 1478-6354 | 1478-6362 | 23 | 1 | SCIE | RHEUMATOLOGY | 2021 | 5.606 | 22.1 | 0.31 | 2025-07-30 | 8 | 7 | Rheumatoid arthritis; Atherosclerosis; Risk factor; Bone mineral density; C-terminal telopeptide of type-I collagen | CARDIOVASCULAR RISK-FACTORS; PLASMA-PARATHYROID-HORMONE; BONE-MINERAL DENSITY; ATHEROSCLEROSIS; OSTEOPROTEGERIN; DISEASE; OSTEOPOROSIS; CALCIFICATION; VALIDATION; EROSIONS | Atherosclerosis; Bone mineral density; C-terminal telopeptide of type-I collagen; Rheumatoid arthritis; Risk factor | Arthritis, Rheumatoid; Biomarkers; Bone Density; Carotid Arteries; Carotid Artery Diseases; Humans; Plaque, Atherosclerotic; Prospective Studies; Radius; carboxy terminal telopeptide; biological marker; adult; Article; atherosclerosis; bone density; cardiovascular risk factor; carotid atherosclerosis; clinical feature; cohort analysis; controlled study; disease association; disease burden; disease exacerbation; distal radius; female; follow up; human; hyperlipidemia; incidence; longitudinal study; major clinical study; male; middle aged; prospective study; protein blood level; rheumatoid arthritis; risk assessment; risk factor; smoking; atherosclerotic plaque; bone density; carotid artery; carotid artery disease; diagnostic imaging; radius | English | 2021 | 2021-10-13 | 10.1186/s13075-021-02642-4 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Removal of nitrate from radioactive wastewater using magnetic multi-walled carbon nanotubes | In the solidification process using asphalt as a medium, nitrate oxidizes the medium and makes it unstable. Therefore, in order to efficiently remove nitrate from wastewater, a magnetic adsorbent was synthesized (m-MWCNTs), and physicochemical properties of m-MWCNTs were confirmed by SEM, TEM, XRD, FT-IR, BET, and VSM analyses. In the process of synthesizing m-MWCNTs, the amount of magnetite introduced on the surface of MWCNTs could be controlled by increasing the concentration of the chemical agent that becomes the Fe pre-cursor. In addition, the amount of nitrate adsorption increased with higher magnetite content on the surface of MWCNTs. The adsorption process followed the Langmuir model and pseudo-second-order kinetics. In nitrate adsorption using m-MWCNTs, pH was the main condition to determine the adsorption amount, and as the pH increased, the amount of nitrate adsorption decreased. Thermodynamic experiments revealed that the adsorption of nitrate by m-MWCNTs is an endothermic and spontaneous process. | Lee, Hyun-Kyu; Yoo, Dong-Han; Jo, Sang-Eun; Choi, Sang-June | Korea Atom Energy Res Inst KAERI, Radwaste Management Ctr, 111,Daedeok Daero 989beon Gil, Daejeon 34057, South Korea; Kyungpook Natl Univ, Sch Architectural Civil Environm & Energy Engn, 80 Daehak Ro, Daegu 41566, South Korea | 36465457300; 58847485400; 57226424186; 56605563600 | sjchoi@knu.ac.kr; | PROGRESS IN NUCLEAR ENERGY | PROG NUCL ENERG | 0149-1970 | 1878-4224 | 140 | SCIE | NUCLEAR SCIENCE & TECHNOLOGY | 2021 | 2.461 | 22.1 | 0.42 | 2025-07-30 | 3 | 6 | Nitrate; MWCNTs; Magnetic; Adsorption; Radioactive waste; Solidification | AQUEOUS-SOLUTIONS; EFFICIENT ADSORPTION; ENHANCED REMOVAL; FACILE SYNTHESIS; NANOPARTICLES; PHOSPHATE; IONS; NANOCOMPOSITE; REDUCTION; BITUMEN | Adsorption; Magnetic; MWCNTs; Nitrate; Radioactive waste; Solidification | Magnetism; Magnetite; Multiwalled carbon nanotubes (MWCN); Nitrates; Physicochemical properties; Radioactive wastes; Radioactivity; Solidification; Chemical agent; Magnetic adsorbents; Multi-walled-carbon-nanotubes; MWCNT's; Nitrate adsorptions; Physicochemical property; Radioactive wastewater; Solidification process; Synthesised; XRD; Adsorption | English | 2021 | 2021-10 | 10.1016/j.pnucene.2021.103893 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | The Use of Contrast Agents in Interventional Pain Procedures: A Multispecialty and Multisociety Practice Advisory on Nephrogenic Systemic Fibrosis, Gadolinium Deposition in the Brain, Encephalopathy After Unintentional Intrathecal Gadolinium Injection, and Hypersensitivity Reactions | This Practice Advisory presents a comprehensive and evidence-based set of position statements and recommendations for the use of contrast media in interventional pain procedures. The advisory was established by an international panel of experts under the auspices of 11 multinational and multispecialty organizations based on a comprehensive review of the literature up to December 31, 2019. The advisory discusses the risks of using gadolinium-based contrast agents. These include nephrogenic systemic fibrosis, gadolinium brain deposition/retention, and encephalopathy and death after an unintentional intrathecal gadolinium injection. The advisory provides recommendations on the selection of a specific gadolinium-based contrast agent in patients with renal insufficiency, those who had multiple gadolinium-enhanced magnetic resonance imaging examinations, and in cases of paraspinal injections. Additionally, recommendations are made for patients who have a history of mild, moderate, or severe hypersensitivity reactions to contrast medium. | Benzon, Honorio T.; Maus, Timothy P.; Kang, Hye-Ryun; Provenzano, David A.; Bhatia, Anuj; Diehn, Felix; Nelson, Ariana; McCormick, Zachary L.; Liu, Benjamin P.; de Andres Ares, Javier; Anitescu, Magdalena; Blackham, Kristine; Bhaskar, Arun; Brill, Silviu; Collins, Jeremy; Gulve, Ashish; Hurley, Robert W.; Jeon, Young Hoon; Moon, Jee Youn; Rauck, Richard L.; Rodes, Meghan; Lee, Ryan K.; Shah, Vinil; Shanthanna, Harsha; van Zundert, Jan; Huntoon, Marc; Rathmell, James P.; Borges, Mario Sanchez; Cohen, Steven P.; Greenberger, Paul A. | Northwestern Univ, Dept Anesthesiol, Feinberg Sch Med, Chicago, IL 60611 USA; Mayo Clin, Dept Radiol, Rochester, MN USA; Seoul Natl Univ, Dept Med Allergy & Immunol, Seoul, South Korea; Pain Diagnost & Intervent Care, Pittsburgh, PA USA; Univ Toronto, Dept Anesthesiol, Toronto, ON, Canada; Univ Calif Irvine, Dept Anesthesiol, Irvine, CA USA; Univ Utah, Dept Phys Med & Rehabil, Salt Lake City, UT USA; Northwestern Univ, Dept Radiol, Feinberg Sch Med, Chicago, IL 60611 USA; Hosp Univ La Paz, Dept Anesthesiol Pain Unit, Madrid, Spain; Univ Chicago, Dept Anesthesiol, Chicago, IL 60637 USA; Univ Hosp, Dept Radiol, Basel, Switzerland; Imperial Coll Healthcare NHS Trust, London, England; Tel Aviv Med Ctr & Sch Med, Inst Pain Med, Tel Aviv, Israel; James Cook Univ Hosp, Dept Pain Management, Middlesbrough, Cleveland, England; Wake Forest Sch Med, Dept Anesthesiol, Winston Salem, NC 27101 USA; Kyungpook Natl Univ, Anesthesiol & Pain Med, Sch Dent, Daegu, South Korea; Seoul Natl Univ, Dept Anesthesiol, Seoul, South Korea; Carolina Pain Inst, Winston Salem, NC USA; Thomas Jefferson Univ, Dept Radiol, Sydney Kimmel Med Coll, Philadelphia, PA 19107 USA; Univ Calif San Francisco, Dept Radiol, San Francisco, CA USA; McMaster Univ, Dept Anesthesiol, Hamilton, ON, Canada; Maastricht Univ Med Ctr, Anesthesiol & Pain Med, Maastricht, Netherlands; Virginia Commonwealth Univ, Med Coll Virginia, Dept Anesthesiol, Richmond, VA 23298 USA; Brigham & Womens Hosp, Dept Anesthesiol Perioperat & Pain Med, 75 Francis St, Boston, MA 02115 USA; Ctr Med Docente Trinidad, Dept Allergy & Clin Immunol, Caracas, Venezuela; Johns Hopkins Sch Med, Dept Anesthesiol & Crit Care Med, Pain Med Div, Dept Phys Med & Rehabil, Baltimore, MD USA; Johns Hopkins Sch Med, Dept Neurol & Psychiat & Behav Sci, Baltimore, MD USA; Northwestern Univ, Dept Med, Div Allergy & Immunol, Feinberg Sch Med, Chicago, IL 60611 USA | Lee, Ryan/HCI-5836-2022; Rathmell, James/GQZ-1503-2022; MD/PhD, Robert/V-6619-2019; Van Zundert, Jan/AAX-6301-2020 | 7003363281; 6603788568; 7404070922; 6602809719; 7102130611; 57202372992; 56471240700; 6506527866; 7408692920; 40761280300; 52263251600; 57204578647; 55239839000; 7004610946; 55461322800; 7801319749; 7103107450; 21645921000; 56431894700; 7003645058; 38862757400; 57202110632; 7201440621; 35746900500; 6701584829; 6603027923; 7006622404; 57193407618; 10641040500; 24487177200 | h-benzon@northwestern.edu; | ANESTHESIA AND ANALGESIA | ANESTH ANALG | 0003-2999 | 133 | 2 | SCIE | ANESTHESIOLOGY | 2021 | 6.627 | 22.1 | 1.01 | 2025-07-30 | 12 | 16 | ENHANCED MR CISTERNOGRAPHY; HIGH SIGNAL INTENSITY; IODINATED CONTRAST; ADVERSE-REACTIONS; CORTICOSTEROID PROPHYLAXIS; DENTATE NUCLEUS; RADIOCONTRAST MEDIA; GLOBUS-PALLIDUS; RISK; ASSOCIATION | Brain; Brain Diseases; Consensus; Contrast Media; Delphi Technique; Drug Hypersensitivity; Humans; Nephrogenic Fibrosing Dermopathy; Pain Management; Prognosis; Risk Assessment; Risk Factors; Tissue Distribution; contrast medium; gadolinium; contrast medium; brain; brain disease; disease severity; drug hypersensitivity; drug retention; drug safety; health care organization; human; kidney failure; nephrogenic systemic fibrosis; nuclear magnetic resonance imaging; off-target effect; pain; pathophysiology; practice guideline; Review; risk assessment; adverse event; analgesia; brain disease; consensus; Delphi study; drug effect; drug hypersensitivity; metabolism; nephrogenic systemic fibrosis; prognosis; risk factor; tissue distribution | English | 2021 | 2021-08 | 10.1213/ane.0000000000005443 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Unscented Kalman Filter-Aided Long Short-Term Memory Approach for Wind Nowcasting | Obtaining reliable wind information is critical for efficiently managing air traffic and airport operations. Wind forecasting has been considered one of the most challenging tasks in the aviation industry. Recently, with the advent of artificial intelligence, many machine learning techniques have been widely used to address a variety of complex phenomena in wind predictions. In this paper, we propose a hybrid framework that combines a machine learning model with Kalman filtering for a wind nowcasting problem in the aviation industry. More specifically, this study has three objectives as follows: (1) compare the performance of the machine learning models (i.e., Gaussian process, multi-layer perceptron, and long short-term memory (LSTM) network) to identify the most appropriate model for wind predictions, (2) combine the machine learning model selected in step (1) with an unscented Kalman filter (UKF) to improve the fidelity of the model, and (3) perform Monte Carlo simulations to quantify uncertainties arising from the modeling process. Results show that short-term time-series wind datasets are best predicted by the LSTM network compared to the other machine learning models and the UKF-aided LSTM (UKF-LSTM) approach outperforms the LSTM network only, especially when long-term wind forecasting needs to be considered. | Kim, Junghyun; Lee, Kyuman | Georgia Inst Technol, Sch Computat Sci & Engn, Atlanta, GA 30332 USA; Kyungpook Natl Univ, Dept Robot & Smart Syst Engn, Daegu 41566, South Korea | ; lee, kyuman/AAM-6979-2020 | 57197770173; 57193932345 | andy.kim@gatech.edu;klee400@knu.ac.kr; | AEROSPACE | AEROSPACE-BASEL | 2226-4310 | 8 | 9 | SCIE | ENGINEERING, AEROSPACE | 2021 | 2.66 | 22.1 | 1.1 | 2025-07-30 | 13 | 15 | unscented Kalman filter; long short-term memory; wind nowcasting | EXTREME LEARNING-MACHINE; PREDICTION; SYSTEM; MODEL | Long short-term memory; Unscented kalman filter; Wind nowcasting | English | 2021 | 2021-09 | 10.3390/aerospace8090236 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Accuracy of Proximal and Occlusal Contacts of Single Implant Crowns Fabricated Using Different Digital Scan Methods: An In Vitro Study | The purpose of this in vitro study was to compare the accuracy of the proximal and occlusal contacts of single implant crowns fabricated with four data capture methods. The resin models were mounted on an articulator, digitized using a laboratory scanner, and saved as a standard tessellation language (STL) file to serve as the master reference model (MRM). Two different intraoral scan body (ISB) systems were evaluated: polyetheretherketone (PEEK) short scan body (SSB) and PEEK long scan body (LSB) (n = 12). The digital impressions (SSB and LSB) were acquired using an intraoral scanner with ISB. Two different conventional techniques were also evaluated: PEEK short scan body with coping plastic cap (CPC) and pick-up coping (PUC) (n = 12). The implant impressions (CPC and PUC) were recorded using a conventional impression technique. The crown and abutment were fabricated with a milling machine and then placed on the resin model and scanned using a laboratory scanner. The scanned files were saved as STL files to serve as test datasets. The MRM and test datasets were superimposed, and the mesial, distal, and occlusal distances were calculated using a 3D inspection software and statistically analyzed using the Kruskal-Wallis H test (alpha = 0.05). The direct data capture group had more accurate contact points on the three surfaces, with mesial contact of 64.7 (12.8) mu m followed by distal contact of 65.4 (15) mu m and occlusal contact of 147 (35.8) mu m in the SSB group, and mesial contact of 84.9 (22.6) mu m followed by distal contact of 69.5 (19.2) mu m and occlusal contact of 115.9 (27.7) mu m in the LSB group (p < 0.001). The direct data capture groups are closer to the ideal proximal and occlusal contacts for single implant crowns than the indirect data capture groups. There was no difference in the accuracy between the two types of scan body (SSB and LSB). | Ren, Xi; Son, Keunbada; Lee, Kyu-Bok | Kyungpook Natl Univ, Sch Dent, Dept Prosthodont, Daegu 41940, South Korea; Shanghai YuJia Dent Clin, Dept Prosthodont, 370 Luochuan East Rd, Shanghai 200002, Peoples R China; Kyungpook Natl Univ, Adv Dent Device Dev Inst, Daegu 41940, South Korea; Kyungpook Natl Univ, Grad Sch, Dept Dent Sci, Daegu 41940, South Korea | SON, Keunbada/AAG-8089-2019; Son, Keunbada/AAG-8089-2019 | 57224449572; 57202916520; 15925571200 | renxi321@gmail.com;sonkeunbada@gmail.com;kblee@knu.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 11 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 0.92 | 2025-07-30 | 11 | 13 | single crown implant; digital scan; intraoral scanner; scan body | AXIAL DISPLACEMENT; PASSIVE FIT; CASTS; TIME; RESTORATIONS; TECHNOLOGY; ADJUSTMENT | Digital scan; Intraoral scanner; Scan body; Single crown implant | Resins; Scanning; Software testing; 3D inspection; Contact points; Conventional techniques; Digital scans; Impression technique; Occlusal contacts; Reference modeling; Single implants; Fabrication | English | 2021 | 2021-06 | 10.3390/ma14112843 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Comparative Analysis of Stress in the Periodontal Ligament and Center of Rotation in the Tooth after Orthodontic Treatment Depending on Clear Aligner Thickness-Finite Element Analysis Study | Lately, in orthodontic treatments, the use of transparent aligners for the correction of malocclusions has become prominent owing to their intrinsic advantages such as esthetics, comfort, and minimal maintenance. Attempts at improving upon this technology by varying various parameters to investigate the effects on treatments have been carried out by several researchers. Here, we aimed to investigate the biomechanical and clinical effects of aligner thickness on stress distributions in the periodontal ligament and changes in the tooth's center of rotation. Dental finite element models comprising the cortical and cancellous bones, gingiva, teeth, and nonlinear viscoelastic periodontal ligaments were constructed, validated, and used together with aligner finite element models of different aligner thicknesses to achieve the goal of this study. The finite element analyses were conducted to simulate the actual orthodontic aligner treatment process for the correction of malocclusions by generating pre-stresses in the aligner and allowing the aligner stresses to relax to induce tooth movement. The results of the analyses showed that orthodontic treatment in lingual inclination and axial rotation with a 0.75 mm-thick aligner resulted in 6% and 0.03% higher principal stresses in the periodontal ligament than the same treatment using a 0.05 mm-thick aligner, respectively. Again, for both aligner thicknesses, the tooth's center of rotation moved lingually and towards the root direction in lingual inclination, and diagonally from the long axis of the tooth in axial rotation. Taken together, orthodontic treatment for simple malocclusions using transparent aligners of different thicknesses will produce a similar effect on the principal stresses in the periodontal ligament and similar changes in the tooth's center of rotation, as well as sufficient tooth movement. These findings provide orthodontists and researchers clinical and biomechanical evidence about the effect of transparent aligner thickness selection and its effect on orthodontic treatment. | Seo, Jeong-Hee; Eghan-Acquah, Emmanuel; Kim, Min-Seok; Lee, Jeong-Hyeon; Jeong, Yong-Hoon; Jung, Tae-Gon; Hong, Mihee; Kim, Won-Hyeon; Kim, Bongju; Lee, Sung-Jae | DENTIS Co Ltd, Med Device R&D Ctr, Daegu 41065, South Korea; Inje Univ, Dept Biomed Engn, Gimhae 50834, South Korea; Osong Med Innovat Fdn, Osong 28160, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Orthodont, Daegu 41940, South Korea; Seoul Natl Univ, Dent Hosp, Innovat Res & Support Ctr Dent Sci, Seoul 03080, South Korea; Seoul Natl Univ, Dent Hosp, Dent Life Sci Res Inst, Seoul 03080, South Korea | Lee, Juhyung/JQV-8143-2023; Kim, Won-Hyeon/AAZ-7903-2020; Jeong, Yong/C-1680-2011; Kim, Bongju/M-2016-2019; Jung, Tae Gon/KHE-1092-2024; Lee, Sang Yup/C-1526-2011 | 57221471850; 57221466656; 57221465359; 57221469970; 55181537600; 55524204600; 57190379016; 57192437864; 55523207800; 35290561500 | sjh00@dentis.co.kr;eghanacquah@gmail.com;kms20162296@gmail.com;jeonghyeon6089@gmail.com;yonghoonj186@kbiohealth.kr;bygon@kbiohealth.kr;mhhong1208@knu.ac.kr;wonhyun79@gmail.com;bjkim016@snu.ac.kr;sjl@bme.inje.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 2 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 2.77 | 2025-07-30 | 43 | 48 | clear aligner; aligner thickness; principal stress; center of rotation; finite element analysis | Aligner thickness; Center of rotation; Clear aligner; Finite element analysis; Principal stress | Biomechanics; Dentistry; Ligaments; Rotation; Center of rotation; Clinical effects; Comparative analysis; Cortical and cancellous bone; Nonlinear visco-elastic; Orthodontic treatments; Periodontal ligament; Treatment process; Finite element method | English | 2021 | 2021-01 | 10.3390/ma14020324 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Detailed Inspection of γ-ray, Fast and Thermal Neutrons Shielding Competence of Calcium Oxide or Strontium Oxide Comprising Bismuth Borate Glasses | For both the B2O3-Bi2O3-CaO and B2O3-Bi2O3-SrO glass systems, gamma-ray and neutron attenuation qualities were evaluated. Utilizing the Phy-X/PSD program, within the 0.015-15 MeV energy range, linear attenuation coefficients (mu) and mass attenuation coefficients (mu/rho) were calculated, and the attained mu/rho quantities match well with respective simulation results computed by MCNPX, Geant4, and Penelope codes. Instead of B2O3/CaO or B2O3/SrO, the Bi2O3 addition causes improved gamma-ray shielding competence, i.e., rise in effective atomic number (Z(eff)) and a fall in half-value layer (HVL), tenth-value layer (TVL), and mean free path (MFP). Exposure buildup factors (EBFs) and energy absorption buildup factors (EABFs) were derived using a geometric progression (G-P) fitting approach at 1-40 mfp penetration depths (PDs), within the 0.015-15 MeV range. Computed radiation protection efficiency (RPE) values confirm their excellent capacity for lower energy photons shielding. Comparably greater density (7.59 g/cm(3)), larger mu, mu/rho, Z(eff), equivalent atomic number (Z(eq)), and RPE, with the lowest HVL, TVL, MFP, EBFs, and EABFs derived for 30B(2)O(3)-60Bi(2)O(3)-10SrO (mol%) glass suggest it as an excellent gamma-ray attenuator. Additionally, 30B(2)O(3)-60Bi(2)O(3)-10SrO (mol%) glass holds a commensurably bigger macroscopic removal cross-section for fast neutrons (Sigma(R)) (=0.1199 cm(-1)), obtained by applying Phy-X/PSD for fast neutrons shielding, owing to the presence of larger wt% of 'Bi' (80.6813 wt%) and moderate 'B' (2.0869 wt%) elements in it. 70B(2)O(3)-5Bi(2)O(3)-25CaO (mol%) sample (B: 17.5887 wt%, Bi: 24.2855 wt%, Ca: 11.6436 wt%, and O: 46.4821 wt%) shows high potentiality for thermal or slow neutrons and intermediate energy neutrons capture or absorption due to comprised high wt% of 'B' element in it. | Lakshminarayana, Gandham; Elmahroug, Youssef; Kumar, Ashok; Tekin, Huseyin Ozan; Rekik, Najeh; Dong, Mengge; Lee, Dong-Eun; Yoon, Jonghun; Park, Taejoon | Kyungpook Natl Univ, Intelligent Construct Automat Ctr, 80 Daehak Ro, Daegu 41566, South Korea; Univ Tunis El Manar, Unite Rech Phys Nucl & Hautes Energies, Fac Sci Tunis, Tunis 2092, Tunisia; Univ Cent, Ecole Cent Polytech Privee Tunis, La Goulette 2015, Tunisia; Univ Coll, Dept Phys, Benra Dhuri 148024, Punjab, India; Univ Sharjah, Med Diagnost Imaging Dept, Coll Hlth Sci, Sharjah 27272, U Arab Emirates; Uskudar Univ, Med Radiat Res Ctr USMERA, TR-34672 Istanbul, Turkey; Univ Hail, Dept Phys, Fac Sci, Hail 81451, Saudi Arabia; Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada; Northeastern Univ, Dept Resource & Environm, Shenyang 110819, Peoples R China; Kyungpook Natl Univ, Sch Architecture Civil Environm & Energy, 1370 Sangyeok Dong, Daegu 702701, South Korea; Hanyang Univ, Dept Mech Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea; Hanyang Univ, Dept Robot Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea | ; Gandham, Lakshminarayana/AAU-6162-2020; Tekin, Huseyin/J-9611-2016; DONG, Mengge/AEN-2933-2022; Tekin, Huseyin Ozan/J-9611-2016; Rekik, Najeh/AAY-8625-2021; Kumar, Ashok/A-7742-2012 | 57194637883; 55869725500; 57307625500; 56971130700; 22136167500; 56082379700; 56605563300; 56449838900; 55717001200 | gandham@knu.ac.kr;youssef_phy@hotmail.fr;ajindal9999@gmail.com;tekin765@gmail.com;na.rekik@uoh.edu.sa;mg_dong@163.com;dolee@knu.ac.kr;yooncsmd@gmail.com;taejoon@hanyang.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 9 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 2.56 | 2025-07-30 | 45 | 43 | B2O3-Bi2O3-CaO glass; B2O3-Bi2O3-SrO glass; gamma-and neutron radiation; Phy-X/PSD software; PENELOPE code; radiation protection efficiency | ATTENUATION PROPERTIES; RADIATION; PROGRAM; GEANT4; PARAMETERS; WINXCOM; IMPACT | B2O3-Bi2O3-CaO glass; B2O3-Bi2O3-SrO glass; PENELOPE code; Phy-X/PSD software; Radiation protection efficiency; γ-and neutron radiation | Atoms; Calcium oxide; Gamma rays; Glass; Lime; Neutrons; Radiation shielding; Strontium compounds; Effective atomic number; Energy absorption buildup factors; Equivalent atomic numbers; Exposure buildup factors; Geometric progressions; Linear attenuation coefficients; Mass attenuation coefficients; Protection efficiency; Bismuth compounds | English | 2021 | 2021-05 | 10.3390/ma14092265 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of Chloride Ions Concentrations to Breakdown the Passive Film on Rebar Surface Exposed to L-Arginine Containing Pore Solution | In the present study, 0.115 M L-arginine (LA) has been used as an eco-friendly inhibitor in simulated concrete pore solutions (SP-0) in order to form passive films on a steel rebar-solution interface until 144 h. Hence, 0.51 (SP-1) and 0.85 M NaCl (SP-2) were added in LA containing SP-0 solution to breakdown the passive film and to initiate corrosion reactions. The electrochemical results show that the charge transfer resistance (R-ct) of steel rebar exposed to SP-1 and SP-2 solutions increased with respect to immersion periods. The sample exposed to the SP-2 solution initiated the corrosion reaction at the steel rebar-solution interface after 24 h of NaCl addition and formed pits; on the other hand, the sample without NaCl added, i.e., SP-0, showed agglomeration and dense morphology of corrosion products. | Singh, Jitendra Kumar; Mandal, Soumen; Lee, Han-Seung; Yang, Hyun-Min | Hanyang Univ, Innovat Durable Bldg & Infrastruct Res Ctr, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea; Kyungpook Natl Univ, Intelligent Construct Automat Ctr, 80,Daehak Ro, Daegu 41566, South Korea; Hanyang Univ, Dept Architectural Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea | Mandal, Soumen/AAB-3917-2021; Singh, Jitendra/AAU-6579-2021; Lee, Han-Seung/E-9087-2013 | 57197846307; 57214752240; 57956643400; 56097115000 | jk200386@hanyang.ac.kr;sou.chm@gmail.com;ercleehs@hanyang.ac.kr;yhm04@hanyang.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 19 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 0.28 | 2025-07-30 | 3 | 5 | steel rebar; concrete pore solution; passive film; corrosion; electrochemical impedance spectroscopy; scanning electron microscopy | SIMULATED CONCRETE; CORROSION-INHIBITORS; STEEL CORROSION; REINFORCEMENT CORROSION; THRESHOLD VALUE; CARBON-STEEL; MILD-STEEL; PHOSPHATE; ELECTRODE; BEHAVIOR | Concrete pore solution; Corrosion; Electrochemical impedance spectroscopy; Passive film; Scanning electron microscopy; Steel rebar | Charge transfer; Concretes; Electrochemical corrosion; Electrochemical impedance spectroscopy; Morphology; Positive ions; Sodium chloride; Steel corrosion; Chloride ion concentration; Concrete pore solutions; Corrosion reaction; Electrochemical-impedance spectroscopies; Exposed to; L-Arginine; Passive films; Pore solution; Solution interface; Steel rebars; Scanning electron microscopy | English | 2021 | 2021-10 | 10.3390/ma14195693 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of Fly Ash on Strength and Stiffness Characteristics of Controlled Low-Strength Material in Shear Wave Monitoring | Fly ash, the main component for controlled low-strength material (CLSM), has physical and chemical characteristics according to the resources used in the thermal power plant, and thus fly ash type can influence the physical and strength properties of CLSM. This study investigates the effect of fly ash type on the engineering properties of CLSM and establishes relationships between mechanical properties of CLSM and shear wave velocity (SWV) for long curing times. Six fly ashes with different physical properties and chemical components are used for preparing the CLSM mixtures. The air content, unit weight, flowability, and setting time of CLSM are measured. Unconfined compressive strength (UCS) and elastic modulus (E) are obtained from unconfined compressive tests, and SWV (V-s) is determined using a bender element-based wave measurement system. Experimental results show that the stiffness and strength characteristics of CLSM are relevant to the contents of two oxides (SiO2 and Al2O3) and the fineness of fly ash. Because the evolution of SWV is influenced by the fly ash type, the relationships UCS-V-s and E-V-s are well established. Thus, considering the fly ash type, shear wave monitoring may be effectively used for estimating strength and stiffness characteristics of CLSM. | Kim, Sang-Chul; Kim, Dong-Ju; Byun, Yong-Hoon | Kyungpook Natl Univ, Sch Agr Civil & Bioind Engn, Daegu 41566, South Korea; Korea Univ, Sch Civil Environm & Architectural Engn, Seoul 02841, South Korea | Byun, Yong-Hoon/JKI-8441-2023 | 57224547044; 7409760881; 42761048000 | kimsc@knu.ac.kr;kyrix1028@korea.ac.kr;yhbyun@knu.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 11 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 1 | 2025-07-30 | 17 | 18 | CLSM; compressive strength; elastic modulus; fly ash; shear wave | CONCRETE STRENGTH; HYDRATION | CLSM; Compressive strength; Elastic modulus; Fly ash; Shear wave | Alumina; Aluminum oxide; Fly ash; Shear flow; Shear waves; Silica; Silicon; Stiffness; Thermoelectric power plants; Wave propagation; Controlled low strength materials; Engineering properties; Physical and chemical characteristics; Shear wave velocity; Strength and stiffness characteristics; Strength characteristics; Thermal power plants; Unconfined compressive strength; Compressive strength | English | 2021 | 2021-06 | 10.3390/ma14113022 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of Thermal Properties of Aggregates on the Mechanical Properties of High Strength Concrete under Loading and High Temperature Conditions | The effect of the thermal properties of aggregates on the mechanical properties of high-strength concrete was evaluated under loading and high-temperature conditions. For the concrete, granite was selected as a natural aggregate, and ash-clay and clay as lightweight aggregates. The mechanical properties of the concrete (stress-strain, compressive strength, elastic modulus, thermal strain, and transient creep) were evaluated experimentally under uniform heating from 20 to 700 & DEG;C while maintaining the load at 0, 20, and 40% of the compressive strength at room temperature. Experimental results showed that the concrete containing lightweight aggregates had better mechanical properties, such as compressive strength and elastic modulus, than that of the concrete with a granite aggregate at high temperature. In particular, the concrete containing lightweight aggregates exhibited high compressive strength (60-80% of that at room temperature) even at 700 & DEG;C. Moreover, the concrete containing granite exhibited a higher thermal strain than that containing lightweight aggregates. The influence of the binding force under loaded conditions, however, was found to be larger for the latter type. The transient creep caused by the loading was constant regardless of the aggregate type below 500 & DEG;C but increased more rapidly when the coefficient of the thermal expansion of the aggregate was above 500 & DEG;C. | Lee, Taegyu; Jeong, Keesin; Choi, Hyeonggil | Semyung Univ, Dept Fire & Disaster Prevent, Jecheon 27136, South Korea; Kyungpook Natl Univ, Sch Architecture & Civil Engn, Daegu 41566, South Korea | 7501437272; 57305923800; 56430165800 | hgchoi@knu.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 20 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 0.57 | 2025-07-30 | 9 | 9 | loading and high temperature conditions; thermal properties of aggregates; high strength concrete; mechanical properties; thermal strain | COMPRESSIVE STRENGTH | High strength concrete; Loading and high temperature conditions; Mechanical properties; Thermal properties of aggregates; Thermal strain | Concrete aggregates; Creep; Elastic moduli; Granite; High performance concrete; Light weight concrete; Loads (forces); Strain; Thermal expansion; Ash clay; High strength concretes; High temperature condition; Lightweight aggregates; Loading and high temperature condition; Loading temperature; Natural aggregate; Thermal property of aggregate; Thermal strain; Transient creeps; Compressive strength | English | 2021 | 2021-10 | 10.3390/ma14206093 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Effects of Iodine Doping on Electrical Characteristics of Solution-Processed Copper Oxide Thin-Film Transistors | In order to implement oxide semiconductor-based complementary circuits, the improvement of the electrical properties of p-type oxide semiconductors and the performance of p-type oxide TFTs is certainly required. In this study, we report the effects of iodine doping on the structural and electrical characteristics of copper oxide (CuO) semiconductor films and the TFT performance. The CuO semiconductor films were fabricated using copper(II) acetate hydrate as a precursor to solution processing, and iodine doping was performed using vapor sublimated from solid iodine. Doped iodine penetrated the CuO film through grain boundaries, thereby inducing tensile stress in the film and increasing the film's thickness. Iodine doping contributed to the improvement of the electrical properties of the solution-processed CuO semiconductor including increases in Hall mobility and hole-carrier concentration and a decrease in electrical resistivity. The CuO TFTs exhibited a conduction channel formation by holes, that is, p-type operation characteristics, and the TFT performance improved after iodine doping. Iodine doping was also found to be effective in reducing the counterclockwise hysteresis in the transfer characteristics of CuO TFTs. These results are explained by physicochemical reactions in which iodine replaces oxygen vacancies and oxygen atoms through the formation of iodide anions in CuO. | Lee, Hyeonju; Zhang, Xue; Kim, Bokyung; Bae, Jin-Hyuk; Park, Jaehoon | Hallym Univ, Dept Elect Engn, Chunchon 24252, South Korea; Shangdong Univ Sci & Technol, Coll Ocean Sci & Engn, Qingdao 266590, Peoples R China; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | 57040032800; 55949859900; 57210471966; 35326180700; 55717156300 | hyeonjulee@hallym.ac.kr;skd996027@sdust.edu.cn;D21012@hallym.ac.kr;jhbae@ee.knu.ac.kr;jaypark@hallym.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 20 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 0.71 | 2025-07-30 | 11 | 12 | iodine doping; copper oxide semiconductor; solution process; thin-film transistor | Copper oxide semiconductor; Iodine doping; Solution process; Thin-film transistor | Copper oxides; Field effect transistors; Grain boundaries; Hall mobility; Hole concentration; Hole mobility; Iodine; Oxide films; Oxide semiconductors; Semiconductor doping; Thin film circuits; Thin films; C. thin film transistor (TFT); Copper oxide semiconductor; Copper oxide thin films; Electrical characteristic; Iodine doping; Oxide thinfilm transistors (TFTs); Performance; Semiconductor films; Solution process; Solution-processed; Thin film transistors | English | 2021 | 2021-10 | 10.3390/ma14206118 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Fabrication of Thermochromic Membrane and Its Characteristics for Fever Detection | Body temperature is an important indicator of the health status of the human body. Thus, numerous studies have been conducted in various fields to measure body temperature. In this study, a biocompatible thermochromic membrane that changes its color when the temperature becomes higher than the transition temperature for thermochromism was fabricated using an extrusion-based three-dimensional printing process. The printing material was prepared by mixing a thermochromic pigment and a thermoplastic polymer in various ratios. The effects of mixing ratio on the various properties of the fabricated membranes were experimentally investigated. It is presented that the fabricated lattice membrane had excellent thermochromic reaction, which was experimentally evaluated using a measurement of color brightness. The pigment content affected the diameter and surface morphology of the printed filament. The elastic modulus decreased, and thermochromic response became faster as the pigment concentration increased. Subsequently, a patch for fever detection was developed and then attached to the skin to demonstrate its color change according to body temperature. Results show that the fabricated thermochromic patch could be successfully applied to fever detection. | Jeon, Hyeon Seop; Kim, Jeong Hwa; Jun, Martin B. G.; Jeong, Young Hun | Kyungpook Natl Univ, Grad Sch, Dept Mech Engn, Daegu 41566, South Korea; Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA; Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea | 57225073491; 56485245200; 24587060000; 56501196300 | hsjeon1994@gmail.com;qhfekrn89@gmail.com;mbgjun@purdue.edu;yhjeong@knu.ac.kr; | MATERIALS | MATERIALS | 1996-1944 | 14 | 13 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING;PHYSICS, APPLIED;PHYSICS, CONDENSED MATTER | 2021 | 3.748 | 22.2 | 0.36 | 2025-07-30 | 7 | 8 | thermochromic pigment; 3D printing; temperature; fever monitoring | 1ST EXAMPLE; TEMPERATURE | 3D printing; Fever monitoring; Temperature; Thermochromic pigment | 3D printers; Biocompatibility; Color; Mixing; Morphology; Physiology; Surface morphology; Body temperature; Color brightness; Lattice membranes; Pigment concentration; Pigment contents; Printing materials; Thermo-chromic; Thermoplastic polymer; Fabrication | English | 2021 | 2021-07 | 10.3390/ma14133460 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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