연구성과로 돌아가기
2021 연구성과 (211 / 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 | Effectiveness of a new cardiac risk scoring model reclassified by QRS fragmentation as a predictor of postoperative cardiac event in patients with severe renal dysfunction | Background It is difficult to evaluate the risk of patients with severe renal dysfunction before surgery due to various limitations despite high postoperative cardiac events. This study aimed to investigate the value of a newly reclassified Revised Cardiac Risk Index (RCRI) that incorporates QRS fragmentation (fQRS) as a predictor of postoperative cardiac events in patients with severe renal dysfunction. Methods Among the patients with severe renal dysfunction, 256 consecutive patients who underwent both a nuclear stress test and noncardiac surgery were evaluated. We reclassified RCRI as fragmented RCRI (FRCRI) by integrating fQRS on electrocardiography. We defined postoperative major adverse cardiac event (MACE) as a composite of cardiac death, nonfatal myocardial infarction, and pulmonary edema. Results Twenty-eight patients (10.9%) developed postoperative MACE, and this was significantly frequent in patients with myocardial perfusion defect (41.4% vs. 28.0%, p = 0.031). fQRS was observed 84 (32.8%) patients, and it was proven to be an independent predictor of postoperative MACE after adjusting for the RCRI (odds ratio 3.279, 95% confidence interval (CI) 1.419-7.580, p = 0.005). Moreover, fQRS had an incremental prognostic value for the RCRI (chi-square = 7.8, p = 0.005), and to the combination of RCRI and age (chi-square = 9.1, p = 0.003). The area under curve for predicting postoperative MACE significantly increased from 0.612 for RCRI to 0.667 for FRCRI (p = 0.027) and 23 patients (32.4%) originally classified as RCRI 2 were reclassified as FRCRI 3. Conclusions A newly reclassified FRCRI that incorporates fQRS, is a valuable predictor of postoperative MACE in patients with severe renal dysfunction undergoing noncardiac surgery. | Cho, Hyun Jun; Kim, Namkyun; Kim, Hyeon Jeong; Park, Bo Eun; Kim, Hong Nyun; Jang, Se Yong; Bae, Myung Hwan; Lee, Jang Hoon; Yang, Dong Heon; Park, Hun Sik; Cho, Yongkeun; Chae, Shung Chull | Daegu Fatima Hosp, Dept Cardiol, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Med, Daegu, South Korea | Park, Hang-soo/AEH-1640-2022 | 39161095700; 55887032700; 57204359002; 57201131446; 56706769800; 57207977889; 36607356800; 54581258000; 35277423400; 57198844106; 9249593500; 7101962036 | bmh0325@knu.ac.kr; | BMC CARDIOVASCULAR DISORDERS | BMC CARDIOVASC DISOR | 1471-2261 | 21 | 1 | SCIE | CARDIAC & CARDIOVASCULAR SYSTEMS | 2021 | 2.174 | 75.2 | 0 | 2025-07-30 | 1 | 1 | Fragmented QRS; Postoperative cardiac complication; Severe renal dysfunction | CHRONIC KIDNEY-DISEASE; GLOMERULAR-FILTRATION-RATE; ABDOMINAL AORTIC-ANEURYSM; CARDIOVASCULAR-DISEASE; MORTALITY; SURGERY; CREATININE; COMPLEX; NUMBER; INDEX | Fragmented QRS; Postoperative cardiac complication; Severe renal dysfunction | Aged; Aged, 80 and over; Decision Support Techniques; Electrocardiography; Female; Heart Diseases; Humans; Kidney; Kidney Diseases; Male; Middle Aged; Myocardial Ischemia; Myocardial Perfusion Imaging; Predictive Value of Tests; Retrospective Studies; Risk Assessment; Risk Factors; Severity of Illness Index; Surgical Procedures, Operative; Tomography, Emission-Computed, Single-Photon; Treatment Outcome; methoxy isobutyl isonitrile technetium tc 99m; age; aged; Article; congestive heart failure; dialysis; ECG abnormality; electrocardiography; female; fragmented QRS complex; heart death; heart infarction; heart left ventricle ejection fraction; human; insulin dependent diabetes mellitus; ischemic heart disease; lung edema; major adverse cardiac event; major clinical study; male; myocardial perfusion imaging; prognosis; prognostic assessment; receiver operating characteristic; retrospective study; Revised Cardiac Risk Index; severe renal impairment; single photon emission computed tomography; adverse event; complication; decision support system; electrocardiography; heart disease; heart muscle ischemia; kidney; kidney disease; middle aged; pathophysiology; predictive value; risk assessment; risk factor; severity of illness index; surgery; treatment outcome; very elderly | English | 2021 | 2021-07-30 | 10.1186/s12872-021-02182-4 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | Article | Impact of renin angiotensin system inhibitor on 3-year clinical outcomes in acute myocardial infarction patients with preserved left ventricular systolic function: a prospective cohort study from Korea Acute Myocardial Infarction Registry (KAMIR) | Background: Patients with acute myocardial infarction (AMI) are usually treated with angiotensin-converting enzyme inhibitors (ACEIs), or angiotensin receptor blockers (ARBs) if ACEIs are not tolerated. However, there is no data regarding the impact of switching from ACEIs to ARBs on long-term clinical outcomes in AMI patients with preserved left ventricular (LV) systolic function especially beyond 1 year. To investigate the effectiveness of treatment with ACEIs or ARBs on clinical outcomes over 3 years in AMI patients with preserved LV systolic function following percutaneous coronary intervention. Method: It is a prospective cohort study using data from a nationwide large scale registry with 53 hospitals involved in treatment of acute myocardial infarction (AMI) in Korea. Between March 2011 and September 2015, we enrolled 6236 patients with AMI who underwent primary percutaneous coronary intervention and had a left ventricular ejection fraction ≥ 50%. Main outcome measures composite of total death or recurrent AMI over 3 years after AMI. Patients were divided into an ACEI group (n = 2945), ARB group (n = 2197), or no renin-angiotensin system inhibitor (RASI) treatment (n = 1094). We analyzed patients who changed treatment. Inverse probability of treatment weighting (IPTW) analysis was also performed. Results: After the adjustment with inverse probability weighting, the primary endpoints at 1 year, AMI patients receiving ACEIs showed overall better outcomes than ARBs [ARBs hazard ratio (HR) compared with ACEIs 1.384, 95% confidence interval (CI) 1.15–1.71; P = 0.003]. However, 33% of patients receiving ACEIs switched to ARBs during the first year, while only about 1.5% switched from ARBs to ACEIs. When landmark analysis was performed from 1 year to the end of the study, RASI group showed a 31% adjusted reduction in primary endpoint compared to patients with no RASI group (HR, 0.74; 95% CI 0.56–0.97; P = 0.012). Conclusions: This result suggests that certain patients got benefit from treatment with ACEIs in the first year if tolerated, but switching to ARBs beyond the first year produced similar outcomes. RASI beyond the first year reduced death or recurrent AMI in AMI patients with preserved LV systolic function. CRIS Registration number: KCT0004990. © 2021, The Author(s). | Kim, Kyung-Hee; Choi, Byoung Geol; Rha, Seung-Woon; Choi, Cheol Ung; Jeong, Myung-Ho; Ahn, Tae Hoon; Yoon, Junghan; Kim, Hyo-Soo; Seung, Ki-Bae; Gwon, Hyeon-Cheol; Chae, Shung Chull; Kim, Chong-Jin; Cha, Kwang Soo; Lee, Jung-Hee; Chae, Jei Keon; Joo, Seung-Jae; Yoon, Chang-Hwan; Hur, Seung-Ho; Seong, In-Whan; Hwang, Kyung-Kuk; Kim, Doo-Il; Oh, SeokSeok Kyu; Hwang, Jin-Yong | Cardiovascular Center, Incheon Sejong Hospital, Incheon, South Korea; Cardiovascular Research Institute, University, Seoul, South Korea; Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, South Korea, Korea University Guro Hospital, Seoul, South Korea; Cardiovascular Center, Korea University Guro Hospital, 148, Gurodong-ro, Guro-gu, Seoul, 08308, South Korea; Division of Cardiology, Department of Medicine, Chonnam National University Hospital, Gwangju, South Korea, Chonnam National University Hospital, Gwangju, South Korea; Gachon University Gil Medical Center, Incheon, South Korea; Wonju Severance Christian Hospital, Wonju, South Korea; Seoul National University Hospital, Seoul, South Korea; Seoul St. Mary’s Hospital, Seoul, South Korea; Samsung Medical Center, Seoul, South Korea; Kyungpook National University Hospital, Daegu, South Korea; Kyunghee University Hospital At Gangdong, Seoul, South Korea; Pusan National University Hospital, Busan, South Korea; Yeungnam University Medical Center, Daegu, South Korea; Chonbuk National University Hospital, Jeongju, South Korea; Jeju National University Hospital, Jeju, South Korea; Seoul National University Bundang Hospital, Bundang, South Korea; Keimyung University Dongsan Medical Center, Daegu, South Korea; Chungnam National University Hospital, Daejeon, South Korea; Chungbuk National University Hospital, Cheongju, South Korea; Inje University Haeundae Paik Hospital, Busan, South Korea; Wonkwang University Hospital, Iksan, South Korea; Gyeongsang National University Hospital, Jinju, South Korea | 57209988283; 57192178767; 8569030400; 15046409800; 56485157500; 57222278496; 35760728900; 33567809200; 7003964208; 6603262426; 7101962036; 35229511500; 7102837700; 55969086000; 26029709000; 9236504200; 7202882965; 34570274500; 35254371300; 7402426370; 8635545900; 24734336000; 55892914700 | swrha617@yahoo.co.kr; | BMC Cardiovascular Disorders | BMC CARDIOVASC DISOR | 1471-2261 | 1471-2261 | 21 | 1 | SCIE | CARDIAC & CARDIOVASCULAR SYSTEMS | 2021 | 2.174 | 75.2 | 0.78 | 2025-07-30 | 8 | AMI; Preserved LV systolic function; RAS inhibitor | Aged; Angiotensin Receptor Antagonists; Angiotensin-Converting Enzyme Inhibitors; Drug Substitution; Female; Humans; Male; Middle Aged; Myocardial Infarction; Percutaneous Coronary Intervention; Prospective Studies; Recurrence; Registries; Renin-Angiotensin System; Republic of Korea; Risk Assessment; Risk Factors; Systole; Time Factors; Treatment Outcome; Ventricular Function, Left; angiotensin receptor antagonist; dipeptidyl carboxypeptidase inhibitor; angiotensin receptor antagonist; dipeptidyl carboxypeptidase inhibitor; acute heart infarction; adult; aged; Article; cardiovascular mortality; clinical feature; clinical outcome; cohort analysis; controlled study; disease registry; drug efficacy; drug substitution; drug tolerability; female; heart left ventricle ejection fraction; human; major clinical study; male; percutaneous coronary intervention; prospective study; recurrence risk; treatment duration; adverse event; clinical trial; comparative study; drug effect; heart infarction; heart left ventricle function; middle aged; mortality; multicenter study; pathophysiology; percutaneous coronary intervention; recurrent disease; register; renin angiotensin aldosterone system; risk assessment; risk factor; South Korea; systole; time factor; treatment outcome | English | Final | 2021 | 10.1186/s12872-021-02070-x | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Article | First experience of junior surgeons with laparoscopic distal gastrectomy: in view of comparison with experienced surgeons | Introduction: Laparoscopic surgery is not easily performed by junior surgeons who have limited experience. Aim: To investigate the safety and feasibility of the first experience of junior surgeons with laparoscopic distal gastrectomy (LDG) who were trained in super high-volume centers. Material and methods: Clinicopathological data from the first 85 LDG cases performed by three gastric cancer surgeons were collected. All three surgeons were trained for > 1 year in super high-volume centers. The surgical and postoperative outcomes of the first experiences of junior surgeons were compared with the short-term outcomes reported in a multicenter randomized controlled trial (Korean Laparoendoscopic Gastrointestinal Surgery Study, KLASS-01 trial), conducted by the KLASS group, which is composed of experienced surgeons who practice in a high-volume center. Results: A significantly greater number of older patients with longer operation times and lower estimated blood loss was observed for the junior surgeons than in the KLASS data. Although junior surgeons performed significantly more Billroth II anastomoses with D1+ lymph node dissection, there was no difference between the two groups in terms of hospital stay, number of retrieved lymph nodes, or postoperative morbidity. Conclusions: The surgical outcomes of early gastric cancer managed by laparoscopic surgery performed by welltrained beginners were similar to the outcomes reported in the large-scale trial. Therefore, with regard to the surgical training system, training at super high-volume centers may be considered to provide some assurance in terms of surgical technique-related safety. | Park, Ki Bum; Lee, Yoontaek; Kim, Dong-Wook | Kyungpook Natl Univ, Sch Med, Dept Surg, Daegu, South Korea; Ewha Womans Univ, Seoul Hosp, Dept Surg, Seoul, South Korea; Dankook Univ, Coll Med, Dept Surg, Cheonan, South Korea | 김, 동욱/JXL-7201-2024; Lee, Yoojin/AAB-9799-2022 | 57220965452; 56599265100; 57203269284 | twdw82@gmail.com; | VIDEOSURGERY AND OTHER MINIINVASIVE TECHNIQUES | VIDEOSURGERY MINIINV | 1895-4588 | 2299-0054 | 16 | 1 | SCIE | SURGERY | 2021 | 1.627 | 75.4 | 0.14 | 2025-07-30 | 1 | 1 | laparoscopy; surgeons; gastric cancer; learning curve | EARLY GASTRIC-CANCER; SURGICAL OUTCOMES; VOLUME | Laparoscopy; Learning curve; Surgeons; gastric cancer | adult; Article; cancer surgery; Clostridium difficile infection; comparative study; female; gastrectomy; gastrectomy Billroth II; gastrojejunostomy; high volume hospital; human; internal hernia; intestine obstruction; laparoscopic surgery; lymph node dissection; male; multicenter study (topic); omentectomy; operation duration; operative blood loss; pneumonia; postoperative complication; postoperative ileus; randomized controlled trial (topic); stomach cancer; surgeon; surgical training; wound complication | English | 2021 | 2021 | 10.5114/wiitm.2020.99310 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Hybrid fiber-reinforced composite with carbon, glass, basalt, and para-aramid fibers for light use applications | This study explores the possibility of incorporating carbon fibers (CFs), basalt fibers, glass fibers, and p-aramid reinforcement fibers into carbon fiber-reinforced composites for light use applications. Hybrid composites can overcome the weakness of CFs and provide flexibility to design materials with the desired properties. The mechanical properties (tensile, flexural, and puncture impact properties) of the prepared hybrid composite were evaluated according to the standards ASTM D3039, ASTM D790, and ISO 6603-2, respectively. The inherent properties of reinforcement fibers, weaving density, and impregnation of a thermoplastic matrix into the composite considerably impact the mechanical performance of the hybrid composite materials. | Cho, Jinwon; Park, Jaehyeung | SHIN HEUNG, Daegu, South Korea; Kyungpook Natl Univ, Dept Biofibers & Mat Sci, Daegu, South Korea | 57703600800; 55566554000 | screenpd@monotex.com;parkj@knu.ac.kr; | MATERIALS RESEARCH EXPRESS | MATER RES EXPRESS | 2053-1591 | 8 | 12 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY | 2021 | 2.025 | 75.5 | 0.86 | 2025-07-30 | 13 | 15 | hybrid composite; carbon fiber; glass fiber; basalt fiber; para-aramid fiber; polyamide 6 | MECHANICAL-PROPERTIES; FLEXURAL PROPERTIES; BEHAVIOR; IMPACT; TENSILE | basalt fiber; carbon fiber; glass fiber; hybrid composite; para-aramid fiber; polyamide 6 | Aramid fibers; Basalt; Carbon fibers; Fiber reinforced plastics; Glass fibers; Polymer matrix composites; Reinforcement; Textile fibers; Basalt fiber; Fiber glass; Fibre-reinforced composite; Glass-fibers; Hybrid composites; Hybrid fiber; Para-aramid fibers; Polyamide 6; Property; Reinforcement fibers; Hybrid composites | English | 2021 | 2021-12 | 10.1088/2053-1591/ac406f | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Sol-gel-processed amorphous-phase ZrO2 based resistive random access memory | In this study, sol-gel-processed amorphous-phase ZrO2 was used as an active channel material to improve the resistive switching properties of resistive random access memories (RRAMs). ITO/ZrO2/Ag RRAM devices exhibit the properties of bipolar RRAMs. The effect of the post-annealing temperature on the electrical properties of the ZrO2 RRAM was investigated. Unlike the ZrO2 films annealed at 400 and 500 degrees C, those annealed at 300 degrees C were in amorphous phase. The RRAM based on the amorphous-phase ZrO2 exhibited an improved high-resistance state (HRS) to low-resistance state ratio (over 10(6)) as well as promising retention and endurance characteristics without deterioration. Furthermore, its disordered nature, which causes efficient carrier scattering, resulted in low carrier mobility and the lowest leakage current, influencing the HRS values. | Kim, Kyoungdu; Hong, Woongki; Lee, Changmin; Lee, Won-Yong; Kim, Do Won; Kim, Hyeon Joong; Kwon, Hyuk-Jun; Kang, Hongki; Jang, Jaewon | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; DGIST, Dept Informat & Commun Engn, Daegu 42988, South Korea; DGIST, Convergence Res Adv Ctr Olfact, Daegu 42988, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | ; Kim, Byung Joo/ABG-7715-2021; Kang, Hongki/AFM-2155-2022 | 57221754528; 57219183777; 57191709616; 57347224700; 59110033500; 57346910500; 57298892000; 36158223200; 57194107504 | hkang@dgist.ac.kr;j1jang@knu.ac.kr; | MATERIALS RESEARCH EXPRESS | MATER RES EXPRESS | 2053-1591 | 8 | 11 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY | 2021 | 2.025 | 75.5 | 0.86 | 2025-07-30 | 17 | 17 | sol-gel; ZrO2; resistive random access memory; amorphous phase; electrochemical metallization cell | Amorphous phase; Electrochemical metallization cell; Resistive random access memory; Sol-gel; ZrO<sub>2</sub> | Annealing; RRAM; Sol-gel process; Sol-gels; Zirconia; Active channels; Amorphous phasis; Channel materials; High-resistance state; Random access memory; Resistive random access memory; Resistive switching; Sol'gel; Switching properties; Deterioration | English | 2021 | 2021-11 | 10.1088/2053-1591/ac3400 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Curvilinear relationship between experienced incivility and nontask behavior in Korean companies | Purpose - Most existing studies treat the relationship between experienced incivility and behavioral responses as linear. However, the current study examines the curvilinear relationships between experienced incivility and organizational citizenship behavior (OCB) and instigated incivility using conservation of resources (COR) theory and by referring to related studies that have identified typical positive and negative employee nontask behaviors. Furthermore, this study identifies turnover intention as a moderator of these curvilinear relationships. Design/methodology/approach - All samples were obtained from respondents working for Korean companies listed on the Korean Securities Dealers Automated Quotations (KOSDAQ); 228 samples were used for the analysis. A quadratic regression function was established to analyze the curved relationships according to hierarchical stages. Findings - Our analysis determined that a U-shaped curvilinear relationship exists between experienced incivility and OCB, and an inverted U-shaped curvilinear relationship exists between experienced and instigated incivility. However, the moderating effect of turnover intention is significant only in the relationship between experienced and instigated incivility. Originality/value - This study exhibits three points of originality-first, by simultaneously considering two dependent variables as responses to experienced incivility and examining their response patterns; second, by using a curvilinear relationship model to investigate the relationship between experienced incivility and its dependent variables; and finally, by finding a moderator to the curved relationship. | Song, Gi Ryung; Kim, Kyoung Seok | Kyungpook Natl Univ, Daegu, South Korea | 57220863238; 57211238975 | ryung@knu.ac.kr;kskim@knu.ac.kr;glucotrend@naver.com; | BALTIC JOURNAL OF MANAGEMENT | BALT J MANAG | 1746-5265 | 1746-5273 | 16 | 2 | SSCI | MANAGEMENT | 2021 | 2.753 | 75.7 | 0.18 | 2025-07-30 | 3 | 3 | Experienced incivility; Organizational citizenship behavior; Instigated incivility; Curvilinear relationship; Turnover intention | ORGANIZATIONAL CITIZENSHIP BEHAVIOR; COUNTERPRODUCTIVE WORK BEHAVIORS; WORKPLACE INCIVILITY; EMOTIONAL EXHAUSTION; CONSERVATION; RESOURCES; RESPONSES; PERFORMANCE; STRATEGIES; EMPLOYEES | Curvilinear relationship; Experienced incivility; Instigated incivility; Organizational citizenship behavior; Turnover intention | English | 2021 | 2021-03-10 | 10.1108/bjm-04-2020-0126 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Design Procedure and Ultimate Capacity of New Turnbuckle for Measuring Tensile Force | A turnbuckle is a device that is installed between tension wires or rods for the purpose of adjusting the tensile force and length of tension members. Tensile force can be adjusted by rotating the body of turnbuckle but the conventional turnbuckle is incapable of measuring tensile force without specific measurement equipment such as a load cell, accelerometer and data logger, etc. New turnbuckles have therefore been developed for adjustment and easy measurement of tensile force. In previous works, the newly developed turnbuckles have been tested and analyzed in order to establish their size, shape and measurable load capacity. The present study addresses the design process and ultimate capacities of new turnbuckles having measurable load capacities of 100, 200 and 300 kN. The ultimate load capacities are obtained via experimental investigation. For each turnbuckle the ultimate loads and the first yield loads are about 5 times and 1.5 times the service load, respectively. | Lee, Swoo-Heon; Shin, Kyung-Jae; Shin, Hye-Min; Lee, Hee-Du | Kyungpook Natl Univ, Sch Convergence & Fus Syst Engn, 2559 Gyeongsang Daero, Sangju Si 37224, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Sch Architectural Engn, 80 Daehak Ro, Daegu 41566, South Korea | Lee, Swoo-Heon/AGO-7501-2022 | 34869937600; 14039501000; 57206950005; 53865180300 | finksnow@knu.ac.kr;shin@knu.ac.kr;hyemin0705@knu.ac.kr;lhdza@knu.ac.kr; | INTERNATIONAL JOURNAL OF STEEL STRUCTURES | INT J STEEL STRUCT | 1598-2351 | 2093-6311 | 21 | 2 | SCIE | CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL | 2021 | 1.541 | 75.7 | 0 | 2025-07-30 | 1 | 1 | Turnbuckle; Ultimate capacity; Measurable load capacity; Tensile force | Measurable load capacity; Tensile force; Turnbuckle; Ultimate capacity | Design; Design procedure; Experimental investigations; Measurement equipment; Tensile forces; Tension members; Ultimate capacity; Ultimate load capacity; Ultimate loads; Loads (forces) | English | 2021 | 2021-04 | 10.1007/s13296-021-00461-6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Modification of the ZnO(0001) Surface by Adsorption of Hydrogen Atoms | The electronic and chemical properties of ZnO surfaces are greatly affected by the adsorption of H atoms. The interaction of H atoms with ZnO(0001) and ZnO(000-1) surfaces has been investigated by temperature programmed desorption (TPD) methods. When the ZnO(000-1) surface is exposed to atomic H at 200 K, one desorption peak of H-2 is observed at 455 K (alpha-peak). In the case of ZnO(0001), two desorption peaks of H-2 are observed at 255 K (gamma-peak) and 455 K (alpha-peak). As H exposure increases, the intensity of the gamma-peak increases as the a-peak is attenuated. The alpha-peak is assigned as the hydrogen adsorbed on O-sites and the y-peak is attributed to hydrogen adsorbed on Zn clusters on ZnO. Zn clusters are produced only on the ZnO(0001) surface as surface O-H bonds are formed. | Roy, Probir Chandra; Khan, Sher Ali; Kim, Chang Min | Natl Curriculum Textbook Board, Dhaka 1000, Bangladesh; Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea | 55627877140; 57221957635; 55697761200 | cmk@knu.ac.kr; | CHEMISTRY LETTERS | CHEM LETT | 0366-7022 | 1348-0715 | 50 | 2 | SCIE | CHEMISTRY, MULTIDISCIPLINARY | 2021 | 1.715 | 75.7 | 0.11 | 2025-07-30 | 2 | 2 | Surface modification; ZnO(0001); Hydrogen | ZNO; DISSOCIATION; CONDUCTIVITY | Hydrogen; Surface modification; ZnO(0001) | English | 2021 | 2021-02 | 10.1246/cl.200682 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Structural Performance Evaluation of Modular Connections Using Developed Blocks | The use of modular structures involves the rapid on-site assembly of members that were pre-manufactured in a factory. Research into this approach has recently been increasing owing to its lower cost, afforded by the shortened assembly process. In this study, we evaluate the use of developed blocks with improved welding, developed through previous research, to improve existing connections' structural performance. The newly-developed connection exhibited superior structural performance over existing connections. This developed block will enable a size reduction of members during their design and is anticipated to yield economic benefits. In addition, the reliability of a connection analysis method using the developed block was proved by using ABAQUS, a general-purpose finite element analysis program. Furthermore, a review of the panel zone design method was conducted through additional variable analysis. No structural problems were found to occur, even with the use of an existing design formula. Therefore, the panel zone design equation is deemed sufficient when designing the developed block. | Lee, Jun-Seop; Lee, Hee-Du; Shin, Kyung-Jae; Kim, Hong-Jin; Lee, Kang-Min | Kyungpook Natl Univ, 80 Daehak Ro, Daegu 41566, South Korea; Chungnam Natl Univ, 99 Daehak Ro, Daejeon 34134, South Korea | 57221623386; 53865180300; 14039501000; 56278546400; 57203464096 | thdhz@knu.ac.kr;lhdhz@knu.ac.kr; | INTERNATIONAL JOURNAL OF STEEL STRUCTURES | INT J STEEL STRUCT | 1598-2351 | 2093-6311 | 21 | 4 | SCIE | CONSTRUCTION & BUILDING TECHNOLOGY;ENGINEERING, CIVIL | 2021 | 1.541 | 75.7 | 0.36 | 2025-07-30 | 7 | 8 | Modular connection; Structural performance evaluation; ABAQUS; FEA | ABAQUS; FEA; Modular connection; Structural performance evaluation | ABAQUS; Reliability analysis; Assembly process; Economic benefits; Finite element analysis program; Modular structures; Structural performance; Structural performance evaluations; Structural problems; Variable analysis; Structural analysis | English | 2021 | 2021-08 | 10.1007/s13296-021-00500-2 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Climatology of nocturnal low-level wind maxima at a topographically complex coastal site in Boseong | We examined the characteristics of nocturnal low-level wind maximum (NLWM) at a topographically complex site in Boseong, South Korea. The study site is located on the southern coast of the Korean peninsula. Although the area within a few kilometers of the site is flat, it is surrounded by mountains and faces the ocean on the southeast side. We defined NLWM as the lowest wind speed maximum within the lowest 300 m of the atmosphere that is at least 2 m s(-1) greater than the next minimum above during nighttime. Climatology of NLWMs was derived from a 4-year half-hourly database of wind profiles (11 levels) obtained from a 300-m tower. The half-hourly data showed that NLWM occurred on approximately 18% of the nights. NLWMs were typically situated at 40 m above the ground. Half of the NLWMs had a speed of 3-5 m s(-1), and its direction was predominantly west-northwesterly regardless of the height or season. The occurrence of NLWM showed a maximum in October and a minimum in July. The cause of NLWM at this site was discussed. It was found that the NLWM at this site occurred in the presence of valley wind forcing on nights with weak northerly geostrophic winds at 850 hPa. | Lee, Young-Hee | Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Daegu, South Korea | 56812706200 | young@knu.ac.kr; | METEOROLOGY AND ATMOSPHERIC PHYSICS | METEOROL ATMOS PHYS | 0177-7971 | 1436-5065 | 133 | 3 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2021 | 2.292 | 76.1 | 0.23 | 2025-07-30 | 4 | 3 | JET | Boseong; South Cholla; South Korea; boundary layer; climate modeling; computer simulation; database; geostrophic flow; wind direction; wind velocity | English | 2021 | 2021-06 | 10.1007/s00703-020-00774-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Implications of the specific localization of YAP signaling on the epithelial patterning of circumvallate papilla | Circumvallate papilla (CVP) is a distinctively structured with dome-shaped apex, and the surrounding trench which contains over two hundred taste buds on the lateral walls. Although CVP was extensively studied to determine the regulatory mechanisms during organogenesis, it still remains to be elucidated the principle mechanisms of signaling regulations on morphogenesis including taste buds formation. The key role of Yes-associated protein (YAP) in the regulation of organ size and cell proliferation in vertebrates is well understood, but little is known about the role of this signaling pathway in CVP development. We aimed to determine the putative roles of YAP signaling in the epithelial patterning during CVP morphogenesis. To evaluate the precise localization patterns of YAP and other related signaling molecules, including beta-catenin, Ki67, cytokeratins, and PGP9.5, in CVP tissue, histology and immunohistochemistry were employed at E16 and adult mice. Our results suggested that there are specific localization patterns of YAP and Wnt signaling molecules in developing and adult CVP. These concrete localization patterns would provide putative involvements of YAP and Wnt signaling for proper epithelial cell differentiation including the formation and maintenance of taste buds. | Kim, Ji-Youn; Kim, Tae-Young; Lee, Eui-Seon; Aryal, Yam Prasad; Pokharel, Elina; Sung, Shijin; Sohn, Wern-Joo; Kim, Jae-Young; Jung, Jae-Kwang | Gachon Univ, Dept Dent Hyg, Inchoen, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Biochem, IHBR, 2177 Dalgubeol Daero, Daegu 41940, South Korea; Daegu Haany Univ, Premajor Cosmet & Pharmaceut, Gyongsan 38610, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Oral Med, IHBR, 2177 Dalgubeol Daero, Daegu 41940, South Korea | Kim, Ji-Youn/A-5779-2017 | 57157491000; 57208461628; 57202610354; 57202611163; 57220028220; 55787126100; 44161404800; 56812734700; 55970994400 | jykim91@knu.ac.kr;widenmy@knu.ac.kr; | JOURNAL OF MOLECULAR HISTOLOGY | J MOL HISTOL | 1567-2379 | 1567-2387 | 52 | 2 | SCIE | CELL BIOLOGY | 2021 | 3.156 | 76.2 | 0.17 | 2025-07-30 | 4 | 3 | Differentiation; Signaling regulation; Pattern formation; Taste bud; Yes-associated protein | CANONICAL WNT SIGNALS; HIPPO PATHWAY; WNT/BETA-CATENIN; CELL PROLIFERATION; TISSUE HOMEOSTASIS; LINGUAL MUCOSA; SELF-RENEWAL; ORGAN SIZE; DIFFERENTIATION; MORPHOGENESIS | Differentiation; Pattern formation; Signaling regulation; Taste bud; Yes‐associated protein | Animals; Cell Differentiation; Female; In Vitro Techniques; Ki-67 Antigen; Mice; Organogenesis; Pregnancy; Signal Transduction; Taste Buds; YAP-Signaling Proteins; beta catenin; brain protein; cytokeratin 14; cytokeratin 8; Ki 67 antigen; pgp9.5 protein; protein kinase Yes; unclassified drug; Wnt protein; yes associated protein; Ki 67 antigen; Yap1 protein, mouse; adult; animal experiment; animal tissue; Article; brain tissue; cell differentiation; cell proliferation; circumvallate papilla; controlled study; embryo; epithelium cell; gustatory system; histopathology; immunohistochemistry; immunolocalization; innervation; male; morphogenesis; mouse; nonhuman; priority journal; protein localization; taste bud; Wnt signaling; animal; cytology; female; genetics; in vitro study; metabolism; organogenesis; physiology; pregnancy; signal transduction | English | 2021 | 2021-04 | 10.1007/s10735-020-09951-z | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Rapid Interference-free Analysis of β-Lapachone in Clinical Samples Using Liquid Chromatography-Mass Spectrometry for a Pharmacokinetic Study in Humans | A rapid analytical method developed for the analysis of beta-lapachone in in vitro samples could not be directly applied to the analysis of clinical samples because of interference from unknown substances. Here, we developed and validated a rapid interference-free analytical method to accurately determine beta-lapachone levels in human plasma using liquid chromatography-tandem mass spectrometry. First, we achieved the baseline-separation of beta-lapachone from any interfering substances within a total run time of 4 min by adjusting the eluent strength of the mobile phase. Second, precursor-ion scanning revealed the identity of the interfering substances. Sulfonate- or glucuronide-conjugated metabolites were converted to beta-lapachone in an electrospray ion source, causing interference. In a method validation study, calibration curves for beta-lapachone in human plasma were linear over a concentration range from 0.5 to 200 ng/mL (r > 0.999), and the lower limit of quantification was 0.5 ng/mL. The other validation parameters, including intra- and interday accuracy and precision, were acceptable with a coefficient of variation less than 10% (n = 5). The validated analytical method was successfully applied to a pharmacokinetic study of a single, oral dose of 100 mg MB12066 (a clinical form of beta-lapachone) in healthy volunteers. | Kim, Bo Kyung; Gwon, Mi-Ri; Kang, Woo Youl; Lee, In-Kyu; Lee, Hae Won; Seong, Sook Jin; Cho, Seungil; Yoon, Young-Ran | Kyungpook Natl Univ, Dept Mol Med, Sch Med, Daegu 41944, South Korea; Kyungpook Natl Univ Hosp, Dept Clin Pharmacol, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Clin Omics Inst, Daegu 41944, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Internal Med, Daegu 41944, South Korea | Lee, In-Kyu/AAR-6374-2021; Yoon, Young-Ran/GLT-0172-2022 | 57204693343; 56035800800; 56816263900; 59060573600; 57202973823; 57211130049; 57194716563; 14629744500 | chosi1@gmail.com;yry@knu.ac.kr; | ANALYTICAL SCIENCES | ANAL SCI | 0910-6340 | 1348-2246 | 37 | 8 | SCIE | CHEMISTRY, ANALYTICAL | 2021 | 1.967 | 76.4 | 0 | 2025-07-30 | 0 | 0 | Interference; beta-lapachone; LC-MS/MS; MB12066; pharmacokinetic study | HUMAN PLASMA; IN-VITRO; CANCER CELLS; METABOLISM; APOPTOSIS; MB12066; MOUSE | Interference; LC-MS/MS; MB12066; pharmacokinetic study; β-lapachone | Chromatography, High Pressure Liquid; Chromatography, Liquid; Humans; Naphthoquinones; Reproducibility of Results; Spectrometry, Mass, Electrospray Ionization; Tandem Mass Spectrometry; Ion sources; Mass spectrometry; Metabolites; Pharmacokinetics; Plasma (human); beta-lapachone; naphthoquinone; Accuracy and precision; Conjugated metabolites; Electrospray ion sources; Interfering substances; Lower limit of quantifications; Pharmacokinetic studies; Tandem mass spectrometry; Validation parameters; electrospray mass spectrometry; high performance liquid chromatography; human; liquid chromatography; reproducibility; tandem mass spectrometry; Liquid chromatography | English | 2021 | 2021-08 | 10.2116/analsci.20p385 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Point of Care Test Technology Suitable for Early Detection and Monitoring of Ischemic Stroke | Background: Stroke is one of the leading causes of death and disability in adulthood worldwide. A simple and convenient diagnostic method is needed for monitoring high-risk patients for stroke. Few POCTs are available for stroke diagnosis. Soluble blood P-selectin is known as a biomarker for platelet aggregation. Increased expression of P-selectin is observed in coronary artery disease, acute myocardial infarction, stroke and peripheral arterial disease. Objective: A simple method that can measure the increased expression of P-selectin in stroke pa-tients is intended to be used for diagnosis or early detection and hospital monitoring of ischemic stroke. Methods: Plasma proteins in blood were separated using a three-layered filter system. Quantum dot and antibody were conjugated to detect biomarkers present in plasma and then measured with a fluorescence spectrophotometer. Results: The detection limit of soluble P-selectin confirmed by immunoassay was 1 ng/ul. In order to increase the sensitivity and simplify the reaction, the detection limit was measured to evaluate the sensitivity of the quantum dot labeled anti P-selectin antibody. As a result, P-selectin of 5 ng/ul or more showed saturation signal intensity, indicating the upper limit of detection, and 10 pg/ul was the lower limit of detection. Conclusion: In this study, we proposed a three-layer filter membrane system that can separate bio-marker-rich fractions from whole blood, simplifying the analysis process and improving sensitivity by using quantum dot-labeled antibodies to detect biomarkers. We hope that our system comple-ments the advantages of POCT and can be applied to real clinical applications. | Lee, Young Mi; Bae, Mi Jung; Choi, Ye Seul; Lee, Eunmi; Cho, Junghwan; Kim, Myung-Gwan; Le, Minh Tan; Nguyen, Thi Hong Duc; Han, Hyung Soo; Park, Nora Jee-Young; Chong, Gun Oh | Kyungpook Natl Univ, Sch Med, Dept Physiol, Daegu 41405, South Korea; Kyungpook Natl Univ, Clin Omics Inst, Daegu 41405, South Korea; Kyungpook Natl Univ, Sch Med, BK21 Four Program, Daegu 41944, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Obstet & Gynecol, Daegu 41404, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Dept Pathol, Daegu 41404, South Korea | ; Le, Tan/ITT-2150-2023; Cho, Junghwan/AAK-4752-2020; Nguyen, Minh-Hoang/GQO-9183-2022 | 57199022012; 56432272400; 57226123444; 57424697000; 57424663500; 57840625200; 57424768200; 57424697100; 7401969388; 57226185359; 23099068000 | hshan@knu.ac.kr; | CURRENT NEUROVASCULAR RESEARCH | CURR NEUROVASC RES | 1567-2026 | 1875-5739 | 18 | 4 | SCIE | CLINICAL NEUROLOGY;NEUROSCIENCES | 2021 | 2.294 | 76.7 | 0 | 2025-07-30 | 1 | 1 | Ischemic stroke; diagnosis; monitoring; point of care test; blood biomarker; quantum dot | SOLUBLE P-SELECTIN; BRAIN; BIOMARKERS; INFARCTION | Blood biomarker; Diagnosis; Ischemic stroke; Monitoring; Point of care test; Quantum dot | Adult; Humans; Ischemic Stroke; Myocardial Infarction; P-Selectin; Point-of-Care Testing; Stroke; Technology; antibody; immunoglobulin G; immunoglobulin M; PADGEM protein; quantum dot; PADGEM protein; antibody detection; Article; blood sampling; chemoluminescence; conjugation; controlled study; enzyme linked immunosorbent assay; fluorescence intensity; gel electrophoresis; human; human tissue; immunoassay; ischemic stroke; limit of detection; point of care testing; pore size; protein analysis; protein expression; spectrofluorometry; stroke patient; adult; brain ischemia; cerebrovascular accident; heart infarction; point of care testing; technology | English | 2021 | 2021 | 10.2174/1567202618666211109103720 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Detection of Touchscreen-Based Urdu Braille Characters Using Machine Learning Techniques | Revolution in technology is changing the way visually impaired people read and write Braille easily. Learning Braille in its native language can be more convenient for its users.)is study proposes an improved backend processing algorithm for an earlier developed touchscreen-based Braille text entry application.)is application is used to collect Urdu Braille data, which is then converted to Urdu text. Braille to text conversion has been done on Hindi, Arabic, Bangla, Chinese, English, and other languages. For this study, Urdu Braille Grade 1 data were collected with multiclass (39 characters of Urdu represented by class 1, Alif ((sic)), to class 39, Bri Yay ((sic)). Total (N. 144) cases for each class were collected.)e dataset was collected from visually impaired students from)e National Special Education School. Visually impaired users entered the Urdu Braille alphabets using touchscreen devices.) The final dataset contained (N. 5638) cases. Reconstruction Independent Component Analysis (RICA)-based feature extraction model is created for Braille to Urdu text classification. The multiclass was categorized into three groups (13 each), i.e., category-1 (1-13), Alif-Zaal ((sic)), category-2 (14-26), Ray-Fay ((sic)), and category-3 (27-39), Kaaf-Bri Yay ((sic)), to give better vision and understanding.)e performance was evaluated in terms of true positive rate, true negative rate, positive predictive value, negative predictive value, false positive rate, total accuracy, and area under the receiver operating curve. Among all the classifiers, support vector machine has achieved the highest performance with a 99.73% accuracy. For comparisons, robust machine learning techniques, such as support vector machine, decision tree, and K-nearest neighbors were used. Currently, this work has been done on only Grade 1 Urdu Braille. In the future, we plan to enhance this work using Grade 2 Urdu Braille with text and speech feedback on touchscreen-based android phones. | Shokat, Sana; Riaz, Rabia; Rizvi, Sanam Shahla; Khan, Inayat; Paul, Anand | Univ Azad Jammu & Kashmir, Dept Comp Sci & IT, Muzaffarabad 13100, CO, Pakistan; Raptor Interact Pty Ltd, Eco Blvd,Witch Hazel Ave, ZA-0157 Centurion, South Africa; Univ Buner, Dept Comp Sci, Buner 19290, Pakistan; Kyungpook Natl Univ, Sch Comp Sci & Engn, Daegu, South Korea | Riaz, Rabia/HJI-6429-2023; Khan, Inayat/AAZ-2156-2020; shokat, sana/AAV-4754-2020; Rizvi, Sanam Shahla/GQQ-8390-2022 | 57188872438; 24475180100; 25927493500; 57189853778; 56650522400 | paul.editor@gmail.com; | MOBILE INFORMATION SYSTEMS | MOB INF SYST | 1574-017X | 1875-905X | 2021 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;TELECOMMUNICATIONS | 2021 | 1.863 | 76.9 | 0.31 | 2025-07-30 | 4 | 5 | Classification (of information); Decision trees; Independent component analysis; Learning algorithms; Nearest neighbor search; Text processing; Back-end processing; Braille characters; Machine learning techniques; Native language; Performance; Processing algorithms; Support vectors machine; Text conversion; Text entry; Visually impaired people; Support vector machines | English | 2021 | 2021-12-27 | 10.1155/2021/7211419 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | FIRST REPORT OF ENTEROCYTOZOON BIENEUSI FROM AN AFRICAN LION (PANTHERA LEO) IN A ZOO IN THE REPUBLIC OF KOREA | Enterocytozoon bieneusi is the most common species of microsporidia that infects humans and animals worldwide. However, no information is available on E. bieneusi infection among zoo animals in the Republic of Korea (ROK). Here, we investigated the prevalence of E. bieneusi among animals kept in zoos and the zoonotic potential of the E. bieneusi identified. E. bieneusi was detected only in one African lion (Panthera leo) with diarrhea, using PCR and sequencing analysis of the internal transcribed spacer (ITS) of the rRNA gene. A phylogenetic analysis based on the ITS gene showed that the lion isolate was classified into a novel genotype KPL belonging to Group 2. The KPL genotype identified in this study differed from genotype I in 6 nucleotides and from genotype I-like in 3 nucleotides, respectively, indicating that Group 2 has the capacity to infect a wide range of hosts. This is the first report of the presence of E. bieneusi in an African lion housed in a zoo in the ROK. Further investigation is necessary to study E. bieneusi infection among zoo animals in various regions and to determine the transmission route, in order to control E. bieneusi infection. | Hwang, Sunwoo; Kim, Jeongho; Park, Yu-Jin; Jang, Dong-Hun; Shin, Seung-Uk; Cho, Hyung-Chul; Choi, Kyoung-Seong | Kyungpook Natl Univ, Coll Ecol & Environm Sci, Dept Anim Sci & Biotechnol, Sangju 37224, South Korea; Cheongju Zoo, Cheongju 28542, South Korea; Kyungpook Natl Univ, Coll Ecol & Environm Sci, Dept Horse Compan & Wild Anim Sci, Sangju 37224, South Korea | 57217125669; 57222670540; 57219426539; 57219426751; 56967385500; 57219427000; 7403949556 | kschoi3@knu.ac.kr; | JOURNAL OF ZOO AND WILDLIFE MEDICINE | J ZOO WILDLIFE MED | 1042-7260 | 1937-2825 | 52 | 1 | SCIE | VETERINARY SCIENCES | 2021 | 0.806 | 76.9 | 0.34 | 2025-07-30 | 2 | 3 | PREVALENCE; CRYPTOSPORIDIUM; MICROSPORIDIOSIS; INFECTION; GENOTYPES; GENETICS; CATTLE; CHINA; WATER | Animals; Animals, Zoo; Diarrhea; Enterocytozoon; Feces; Lions; Microsporidiosis; Phylogeny; Republic of Korea; animal; diarrhea; Enterocytozoon; feces; genetics; isolation and purification; lion; microbiology; microsporidiosis; phylogeny; South Korea; veterinary medicine; zoo animal | English | 2021 | 2021-03 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
페이지 이동: