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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 | Optimization of Two-Stage Hybrid Forming Process via Quantitative Assessment of Mechanical Properties in AA5052 | Superplastic forming (SPF) is a promising approach used for manufacturing parts with complex geometries, especially in the automotive, aerospace, and marine industries. However, the wider use of this method is limited by issues of low forming rate, high-temperature requirement, non-uniform thickness distribution, and expensive base materials. The two-stage hybrid forming (HF) method, in which hot-punch forming is executed before the SPF, was introduced to overcome these limitations. In this study, a conventional non-superplastic grade 5052 aluminum (AA5052) alloy with an average grain size of 70 mu m was used to evaluate the applicability of two-stage HF for manufacturing parts with complex geometries from coarse grain alloys. Before implementing the two-stage HF, the optimal experimental conditions for hot drawing and hot blowing were first determined. The optimum HF conditions were identified, as follows: a hot-punching temperature of 400 degrees C, punch depth of 35 mm, punching speed of 150 mm/min, blow forming temperature of 500 degrees C, and gas pressure of 2.5 MPa. The HF results were also verified using the finite element method. The finite element analyses results for thickness distribution and optimal process condition were compared with the experimental results for one-stage and two-stage forming, and showed acceptable similarity. | Lee, Sang Soo; Du Choi, Seon; Shin, Ho Geun; Timilsina, Suman; Jang, Seong Min; Lee, Young Seon; Kwon, YongNam; Kim, Ji Sik | Korea Marine EquipmentRes Inst, Dept Marine Environm, Gyeongsangnam Do 53207, South Korea; Korea Inst Mat Sci, Dept Mat Proc, Chang Won 51508, South Korea; Kyungpook Natl Univ, Dept Adv Sci & Technol Convergence, Kyeongbuk 37224, South Korea; Kyungpook Natl Univ, Sch Nano & Adv Mat Engn, Sangju 37224, South Korea | Timilisina, Suman/GLT-8029-2022; Lee, Young-Seon/L-3636-2013 | 57702570800; 57702301200; 57215092476; 55844969100; 57702842700; 27168701900; 7403459230; 16444690100 | kyn1740@kim.re.kr;jisikim@knu.ac.kr; | KOREAN JOURNAL OF METALS AND MATERIALS | KOREAN J MET MATER | 1738-8228 | 60 | 5 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING | 2022 | 1.2 | 67.7 | 0 | 2025-06-25 | 0 | 0 | AA5052; punching; superplasticity; compression test; two-stage hybrid forming | GRAIN-SIZE GRADIENTS; SHEETS | AA5052; compression test; punching; superplasticity; two-stage hybrid forming | Aluminum alloys; Automotive industry; Drawing (forming); Finite element method; Geometry; Marine industry; Superplasticity; Aa5052; Complex geometries; Forming rate; Highest temperature; Non-uniform thickness; Optimisations; Quantitative assessments; Superplastic forming; Two-stage hybrid forming; Uniform thickness distribution; Compression testing | English | 2022 | 2022-05 | 10.3365/kjmm.2022.60.5.391 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Process Optimization for Dual Laser Beam Joining for Dissimilar Plastics | A dual laser beam joining process is introduced for joining dissimilar plastics. A customized laser head was built, and two different diode lasers with central wavelengths of 980 and 1940 nm were simultaneously applied to obtain PMMA/PC-1 and PC-2/ABS joints. Various experimental conditions were employed for the dual laser beam joining, which were performed at different laser powers for the 1940 nm laser beam and a fixed laser power for the 980 nm laser beam. The tensile shear force of the PMMA/PC-1 and PC-2/ABS joints was measured, and compared with those using the 980 nm single laser beam joining process. For both joints, a decrease in tensile shear force was observed when the laser power of the 1940 nm laser beam increased. Only the dual laser beam joining using the 1940 nm laser beam at the smallest laser power showed relatively higher tensile shear force than those of the 980 nm single laser beam joining. The transmission values of the PMMA and PC-2 at the wavelength of 980 nm were measured with different powers of 1940 nm laser beam, and a correlation between the joining properties and transmission values was found. | Kim, Suwon; Choi, PilGong; Choi, Soo Jin; Han, Sang Bae; Choi, Jiyeon; Kim, Jeng O.; Sohn, Hyonkee; Ahn, Sanghoon; Noh, Jiwhan; Kang, Heeshin; Jung, Kwangyun; Kim, Dohyun; Kim, Hyun-Deok; Park, Changkyoo | EVlaser, Gunpo 15850, South Korea; Korea Inst Machinery & Mat, Dept Laser & Electron Beam Technol, Daejeon 34103, South Korea; Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea | Park, Changkyoo/GPF-8215-2022; Kim, Yong Joon/IQS-7291-2023; choi, pilgong/NIU-2768-2025 | 57741826600; 57741826700; 55736586700; 57741724400; 15842999300; 7601371909; 8937741500; 55194341100; 15081420500; 36986508600; 57741773100; 59783898100; 55663858300; 56112070500 | hdkim@knu.ac.kr;ek0421@kimm.re.kr;ck0421@kimm.re.kr; | KOREAN JOURNAL OF METALS AND MATERIALS | KOREAN J MET MATER | 1738-8228 | 60 | 6 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING | 2022 | 1.2 | 67.7 | 0 | 2025-06-25 | 0 | 0 | Laser joining; Dual laser beam; Dissimilar plastics; Joining properties; Transmission | Dissimilar plastics; Dual laser beam; Joining properties; Laser joining; Transmission | Elastomers; Joining; Optimization; Transmissions; Dissimilar plastic; Dual laser beam; Joining process; Joining property; Laser joining; Laser power; Process optimisation; Property; Tensile shear forces; Transmission value; Laser beams | English | 2022 | 2022-06 | 10.3365/kjmm.2022.60.6.432 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Through-Thickness Microstructures and Yield Strength Enhancement for AZ31 Mg Sheets Treated by Ultrasonic Nanocrystal Surface Modification | An ultrasonic nanocrystal surface modification (UNSM) technique was applied to a 1-mm thick AZ31 magnesium sheet. UNSM is a relatively new surface modification technique in which a hard, hemispherical tip (2.38 mm in diameter) strikes the surface at an ultrasonic frequency to induce plastically deformed gradient microstructures and deep compressive residual stresses through the thickness. After the UNSM treatment, the through-thickness microstructures were thoroughly investigated using electron microscopy and electron backscatter diffraction analysis. The through-thickness microstructures revealed zones that were severely deformed (down to 200 mu m from the surface) and twin-dominated (200 similar to 300 mu m deep from the surface). The severely deformed zone consisted of shear banding, grain subdivision and reorientation, due to the strong plastic deformation, accompanied by the formation of {1012} tensile twins (despite compressive strikes by the hemispherical tip), {10 (1) over bar1}-{10 (1) over bar2} double twins and {10 (1) over bar1} compression twins. The cause for tensile twinning was examined through a literature survey. In the twin-dominated zone, the twining activity prevailed as the slip activity gradually decayed through the thickness. The UNSM-induced hardness and microstructure enhancement was found to be effective down to about 300 similar to 400 mu m deep from the surface. Finally, the source of the increase in yield strength after the UNSM treatment of the AZ31 sheet was analyzed, and focused on individual cases of microstructural enhancement in the severely deformed zone and the twin zone, and the compressive residual stress. | Kang, Myungsung; Kang, Joo-Hee; Park, Hyeonuk; Kim, Jun-Hyung; Pyoun, Young-Sik; Baek, Minjae; Lee, Dong Jun; Lee, Seung Jin; Park, Sanghu; Kim, Hong Moule; Park, Sung Hyuk; Choi, Yoon Suk | Pusan Natl Univ, Sch Mat Sci & Engn, Busan 46241, South Korea; Korea Inst Mat Sci, Mat Testing & Reliabil Div, Dept Mat Anal, Chang Won 51508, South Korea; LG Energy Solut R&D Campus, Proc Technol Ctr, Daejeon 34122, South Korea; Design Mecha Inc, Design Mecha Technol Ctr, Asan 31460, South Korea; Sun Moon Univ, Sch Mech & ICT Convergence Engn, Asan 31460, South Korea; Korea Inst Mat Sci, Ctr Aerosp Mat, Mat Digital Platform Div, Chang Won 51508, South Korea; Pusan Natl Univ, Sch Mech Engn, Busan 46241, South Korea; DAEGUN TECH Inc, Chang Won 51389, South Korea; HanaAMT Co Ltd, Cheongju 51389, Chungcheongbuk, South Korea; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea | Kang, Joo-Hee/AAB-4723-2020; Pyun, Young/AAM-3310-2020; Park, Sung-Hyuk/AAE-6726-2022; Lee, Jeong Eun/R-8689-2019 | 57540391200; 56413392100; 57205077678; 59864241000; 57539106000; 57539106100; 55812182300; 57540070400; 57218803036; 57539424400; 54786002500; 32367575600 | choiys@pusan.ac.kr; | KOREAN JOURNAL OF METALS AND MATERIALS | KOREAN J MET MATER | 1738-8228 | 60 | 3 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING | 2022 | 1.2 | 67.7 | 0.47 | 2025-06-25 | 4 | 5 | AZ31 Mg; ultrasonic nanocrystal surface modification (UNSM); through-thickness microstructures; effective depth; strength | TRIBOLOGICAL PROPERTIES; DOUBLE TWINS; ALLOY; DEFORMATION; BEHAVIOR; IMPROVEMENT | AZ31 Mg; Effective depth; Strength; Through-thickness microstructures; Ultrasonic nanocrystal surface modification (UNSM) | Magnesium alloys; Magnesium printing plates; Nanocrystals; Residual stresses; Ultrasonic applications; Yield stress; AZ31 Mg; Compressive residual stress; Effective depth; Nanocrystal surface; Strength; Surface modification techniques; Surface-modification; Through-thickness; Through-thickness microstructure; Ultrasonic nanocrystal surface modification; Microstructure | Korean | 2022 | 2022-03 | 10.3365/kjmm.2022.60.3.169 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Integrated current balancing cells based IPOP bidirectional CLLC resonant converter modules for high-power applications | This paper proposes an integrated current balancing (ICB) cells-based input parallel output parallel (IPOP) bidirectional CLLC modules. The IPOP system based on the CLLC modules inherent all of the good features of a single CLLC module including zero-voltage and zero-current switching (ZVZCS) for the inverter and rectifier stage. Besides, the IPOP configuration is a better approach to utilize low-power rating modules for high-power applications. However, tolerances in the tank circuit parameters cause an acute imbalance in modules currents. Therefore, the equal power distribution among the IPOP CLLC modules is an important issue that needs to be addressed. Different control and passive current sharing techniques have been proposed, but they cause increase in component count, cost, complexity, and magnetic volume of the IPOP converters. This paper integrates the already present resonant inductors of the bidirectional CLLC modules to evenly share the two currents at the input as well as at the output of the converters under the open-loop condition with substantial tolerances of +/- 10%$ \pm \;10\;\% $ in the tank circuit parameters. Moreover, the proposed ICB cells generate sufficient resonant inductances for the respective tank circuits, simultaneously. No additional active or passive components are introduced in the system; thus, it does not increase the cost, complexity, and magnetic volume of the IPOP CLLC modules. Two types of cores (UU- and EE-cores) based ICB cells are analysed with current sharing performance. To verify the effectiveness of the ICB cells, a 4.9-kW laboratory hardware prototype was built and tested. | Ahmad, Ubaid; Cha, Honnyong; Ro, Jong-Suk | Kyungpook Natl Univ, Dept Environm & Energy Engn, Daegu, South Korea; Chung Ang Univ, Sch Elect & Elect Engn, Bldg 310,Room 633, Seoul 06974, South Korea | RO, JONGSUK/AAN-8519-2020; Ahmad, Ubaid/IXM-9731-2023 | 58257165200; 24450248400; 55566324000 | ubaidahmad@knu.ac.kr;jongsukro@gmail.com; | IET POWER ELECTRONICS | IET POWER ELECTRON | 1755-4535 | 1755-4543 | 15 | 15 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 2 | 67.8 | 0.47 | 2025-06-25 | 4 | 6 | DC-DC CONVERTER; DESIGN | Cytology; Electric rectifiers; Fits and tolerances; Power converters; Zero current switching; 'current; Cell-based; Circuit parameter; Current balancing; High power applications; Integrated currents; Magnetic volume; Parallel output; Resonant converters; Tank circuits; Cells | English | 2022 | 2022-11 | 10.1049/pel2.12337 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Effects of a graphene oxide-alginate sheet scaffold on rotator cuff tendon healing in a rat model | Background Natural polymer scaffolds used to promote rotator cuff healing have limitations in terms of their mechanical and biochemical properties. This animal study aimed to investigate the effects of combined graphene oxide (GO) and alginate scaffold and the toxicity of GO on rotator cuff healing in a rat model. Methods First, the mechanical properties of a GO/alginate scaffold and a pure alginate scaffold were compared. The in vitro cytotoxicity of and proliferation of human tenocytes with the GO/alginate scaffold were evaluated by CCK-8 assay. For the in vivo experiment, 20 male rats were randomly divided into two groups (n = 10 each), and supraspinatus repair was performed: group 1 underwent supraspinatus repair alone, and group 2 underwent supraspinatus repair with the GO/alginate scaffold. Biomechanical and histological analyses were performed to evaluate the quality of tendon-to-bone healing 8 weeks after rotator cuff repair. Results The GO/alginate scaffold exhibited an increased maximum load (p = .001) and tensile strength (p = .001). In the cytotoxicity test, the cell survival rate with the GO/alginate scaffold was 102.08%. The proliferation rate of human tenocytes was no significant difference between the GO/alginate and alginate groups for 1, 3, 5, and 7 days. Biomechanically, group 2 exhibited a significantly greater ultimate failure load (p < .001), ultimate stress (p < .001), and stiffness (p < .001) than group 1. The histological analysis revealed that the tendon-to-bone interface in group 2 showed more collagen fibers bridging, tendon-to-bone integration, longitudinally oriented collagen fibers, and fibrocartilage formation than in group 1. Conclusion A small amount of GO added to alginate improved the mechanical properties of the scaffold without evidence of cytotoxicity. At 8 weeks after rotator cuff repair, the GO/alginate scaffold improved tendon-to-bone healing without causing any signs of toxicity in a rat model. | Yoon, Jong Pil; Kim, Dong Hyun; Min, Seung Gi; Kim, Hun-Min; Choi, Jin-Hyun; Lee, Hyun Joo; Park, Kyeong Hyeon; Kim, Seong Soo; Chung, Seok Won; Yoon, Sung Hyuk | Kyungpook Natl Univ, Sch Med, Dept Orthopaed Surg, Daegu, South Korea; Korea Dyeing & Finishing Technol Inst, Daegu, South Korea; Kyungpook Natl Univ, Dept Biofibers & Mat Sci, Daegu, South Korea; Konkuk Univ, Sch Med, Dept Orthopaed Surg, Seoul, South Korea | Kim, Sae/AAR-3907-2020; Kim, Siwon/KHX-9078-2024; Park, KyeongHyeon/KEH-4919-2024 | 36098548400; 57198637188; 57192312745; 57210831160; 36076723600; 58838750100; 56969984400; 57898930300; 37065938600; 56323207000 | yoonsh920@gmail.com; | JOURNAL OF ORTHOPAEDIC SURGERY | J ORTHOP SURG-HONG K | 1022-5536 | 2309-4990 | 30 | 3 | SCIE | ORTHOPEDICS;SURGERY | 2022 | 1.6 | 68.0 | 1.66 | 2025-06-25 | 7 | 8 | graphene oxide; alginate; tendon-to-bone healing; rotator cuff; rat model | MESENCHYMAL STEM-CELLS; SODIUM ALGINATE; AUGMENTATION; REPAIR; COMPOSITE; VIABILITY; HYDROGEL | alginate; graphene oxide; rat model; rotator cuff; tendon-to-bone healing | Alginates; Animals; Biomechanical Phenomena; Collagen; Graphite; Humans; Male; Polymers; Rats; Rotator Cuff; Rotator Cuff Injuries; Sincalide; Tendons; Wound Healing; alginic acid; graphene oxide; graphene oxide alginate sheet scaffold; molecular scaffold; unclassified drug; alginic acid; cholecystokinin octapeptide; collagen; graphene oxide; graphite; polymer; animal experiment; animal model; animal tissue; Article; biomechanics; CCK 8 assay; cell proliferation assay; cell proliferation rate; cell survival rate; chondrogenesis; collagen fiber; controlled study; cytotoxicity; fibrocartilage; healing; histopathology; human; human cell; in vitro study; in vivo study; male; mechanical stress; musculoskeletal stiffness; nonhuman; rat; rat model; rotator cuff injury; rotator cuff repair; supraspinatus muscle; tendon healing; tendon to bone healing; tenocyte; tensile strength; animal; pathology; rotator cuff; tendon; wound healing | English | 2022 | 2022-09 | 10.1177/10225536221125950 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Safety and metabolic advantages of steroid withdrawal after 6 months posttransplant in de novo kidney transplantation: A 1-year prospective cohort study | Introduction: This prospective multicenter study aimed at investigating the safety and metabolic advantages of steroid withdrawal (SW) therapy in kidney transplant recipients with tacrolimus-mycophenolate mofetil-based immunosuppression. Methods: We analyzed 179 recipients who received kidney transplantation from March 2016 and September 2018. In 179 recipients, 114 patients maintained an immunosuppressive regimen including steroids (steroid continuation [SC] group). The remaining 65 patients were determined to withdraw steroid therapy after 6 months posttransplant (SW group). Metabolic parameters and graft functions of the two groups were evaluated. Results: The estimated glomerular filtration rates at 12 months posttransplant were 67.29 +/- 20.29 ml/min/1.73 m(2) in SC group and 73.72 +/- 17.57 ml/min/1.73 m(2) in SW group (p < .001). The acute rejection occurred to four recipients in the SC group (3.5%) and no acute rejection occurred to SW group recipients during the 6-2 months posttransplant period. Oral glucose tolerance tests revealed that recipients in the SW group were more improved in glucose metabolism than the SC group during 6-12 months posttransplant. In addition, cholesterol levels and blood pressure decreased after the withdrawal of steroids in the SW group. Conclusion: In conclusion, a 6-month withdrawal of steroids in recipients with low immunological risk and stable graft function can be safely conducted and result in improvement of metabolic profiles. Stable recipients without biopsy-proven acute rejection and proteinuria can safely withdraw from steroids out of a maintenance immunosuppressive regimen 6-months posttransplant. A long-term follow-up study is needed to verify our results. | Bang, Jun B.; Oh, Chang-Kwon; Kim, Yu S.; Kim, Sung H.; Yu, Hee C.; Kim, Chan-Duck; Ju, Man Ki; So, Byung J.; Lee, Sang Ho; Han, Sang Y.; Jung, Cheol W.; Kim, Joong K.; Ahn, Hyung J.; Lee, Su H.; Jeon, Ja Y. | Ajou Univ, Sch Med, Dept Surg, World Cup Ro 164, Suwon 16499, South Korea; Yonsei Univ, Coll Med, Res Inst Transplantat, Dept Transplantat Surg, Seoul, South Korea; Yonsei Univ, Wonju Coll Med, Wonju Severance Christian Hosp, Dept Surg, Wonju, South Korea; Jeonbuk Natl Univ, Coll Med, Dept Surg, Jeonju, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Internal Med, Daegu, South Korea; Yonsei Univ, Coll Med, Dept Surg, Seoul, South Korea; Wonkwang Univ Hosp, Dept Surg, Iksan, South Korea; Kyung Hee Univ, Dept Internal Med, Seoul, South Korea; Inje Univ, Ilsan Paik Hosp, Dept Internal Med, Goyang, South Korea; Korea Univ, Coll Med, Dept Surg, Seoul, South Korea; Bong Seng Mem Hosp, Dept Internal Med, Busan, South Korea; Kyung Hee Univ, Sch Med, Dept Surg, Seoul, South Korea; Ajou Univ, Sch Med, Dept Endocrinol & Metab, 164 World Cup Ro, Suwon 16499, South Korea | ; Kim, Seung/N-5248-2019; Ju, Man/AAB-8449-2019; Kim, Hyoungnae/JXN-1329-2024; kim, Seok-jun/E-7924-2015 | 56970644500; 7202497469; 27067882600; 57224889949; 7405855968; 8558530700; 15755796200; 36860314000; 55890136000; 57216860543; 7402016375; 56508055400; 56812471300; 57307240100; 55295512300 | dltngudgs@aumc.ac.kr;twinstwins@hanmail.net; | IMMUNITY INFLAMMATION AND DISEASE | IMMUN INFLAMM DIS | 2050-4527 | 10 | 3 | SCIE | IMMUNOLOGY | 2022 | 3.2 | 68.0 | 0.08 | 2025-06-25 | 1 | 1 | cholesterol; glucose tolerance test; kidney transplantation; steroids | RENAL-TRANSPLANTATION; INSULIN-RESISTANCE; GLUCOSE-METABOLISM; LONG-TERM; RECIPIENTS; TACROLIMUS; MULTICENTER; COST; RISK | cholesterol; glucose tolerance test; kidney transplantation; steroids | Graft Rejection; Humans; Kidney Transplantation; Mycophenolic Acid; Prospective Studies; Steroids; basiliximab; corticosteroid; creatinine; insulin; steroid; tacrolimus; mycophenolic acid; steroid; adult; Article; blood pressure; body mass; cardiovascular risk; cholesterol level; cohort analysis; delayed graft function; drug safety; drug withdrawal; estimated glomerular filtration rate; female; follow up; glomerulus filtration rate; glucose blood level; glucose metabolism; glucose tolerance; graft rejection; graft survival; human; hypertension; immunosuppressive treatment; insulin sensitivity; kidney transplantation; liver transplantation; major clinical study; male; metabolic parameters; metabolism; middle aged; multicenter study; oral glucose tolerance test; physical examination; proteinuria; quality of life; adverse event; clinical trial; graft rejection; procedures; prospective study | English | 2022 | 2022-03 | 10.1002/iid3.576 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A Study on Verification of Equivalence and Effectiveness of Non-Pharmacologic Dementia Prevention and Early Detection Contents : Non-Randomly Equivalent Design | Objective : The aim of this study was to verify the equivalence and effectiveness of the tablet-administered Korean Repeatable Battery for the Assessment of Neuropsychological Status (K-RBANS) for the prevention and early detection of dementia. Methods : Data from 88 psychiatry and neurology patient samples were examined to evaluate the equivalence between tablet and paper administrations of the K-RBANS using a non-randomly equivalent group design. We calculated the prediction scores of the tablet-administered K-RBANS based on demographics and covariate-test scores for focal tests using norm samples and tested format effects. In addition, we compared the receiver operating characteristic curves to confirm the effectiveness of the K-RBANS for preventing and detecting dementia. Results : In the analysis of raw scores, line orientation showed a significant difference (t=-2.94, p<0.001), and subtests showed small to large effect sizes (0.04-0.86) between paper-and tablet-administered K-RBANS. To investigate the format effect, we compared the predicted scaled scores of the tablet sample to the scaled scores of the norm sample. Consequently, a small effect size (d <= 0.20) was observed in most of the subtests, except word list and story recall, which showed a medium effect size (d=0.21), while picture naming and subtests of delayed memory showed significant differences in the one-sample t-test. In addition, the area under the curve of the total scale index (TSI) (0.827; 95% confidence interval, 0.738-0.916) was higher than that of the five indices, ranging from 0.688 to 0.820. The sensitivity and specificity of TSI were 80% and 76%, respectively. Conclusion : The overall results of this study suggest that the tablet-administered K-RBANS showed significant equivalence to the norm sample, although some subtests showed format effects, and it may be used as a valid tool for the brief screening of patients with neuropsychological disorders in Korea. | Jeong, Hyun-Seok; Kim, Oh-Lyong; Koo, Bon-Hoon; Kim, Ki-Hyun; Kim, Gi-Hwan; Bai, Dai-Seg; Kim, Ji-Yean; Chang, Mun-Seon; Kim, Hye-Geum | Kyungpook Natl Univ, Coll Social Sci, Dept Psychol, 80 Daehak Ro, Daegu 41566, South Korea; Yeungnam Univ, Coll Med, Dept Neurosurg, Daegu, South Korea; Yeungnam Univ, Coll Med, Dept Psychiat, 170 Hyeonchung Ro, Daegu 42415, South Korea; Corp Res Inst Clupea Inc, Daegu, South Korea | KOO, BON HOON/KOD-4275-2024; Koo, Bon Hoon/KOD-4275-2024 | 57215962796; 7202629363; 35734413300; 57553290700; 57215971280; 23670036500; 57194708036; 54784160000; 57191711119 | psykhg@yu.ac.kr;moonsun@knu.ac.kr; | JOURNAL OF KOREAN NEUROSURGICAL SOCIETY | J KOREAN NEUROSURG S | 2005-3711 | 1598-7876 | 65 | 2 | SCIE | CLINICAL NEUROLOGY;SURGERY | 2022 | 1.6 | 68.3 | 0 | 2025-06-25 | 0 | 0 | Equivalence trial; Neuropsychological test; Research methodology; Korean Repeatable Battery for the Assessment of Neuropsychological Status (K-RBANS); Dementia | VERSION | Dementia; Equivalence trial; Korean Repeatable Battery for the Assessment of Neuropsychological Status (K-RBANS); Neuropsychological test; Research methodology | adult; aged; area under the curve; Article; cognition; cognitive function test; comparative effectiveness; dementia; demographics; diagnostic test accuracy study; effect size; equivalence trial; Expanded Disability Status Scale; female; hospitalization; human; human experiment; Korea; language ability; male; memory; Mini Mental State Examination; Montreal cognitive assessment; neurology; neuropsychological test; phonetics; prediction; receiver operating characteristic; sensitivity and specificity; validation process | English | 2022 | 2022-03 | 10.3340/jkns.2021.0153 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | Article | Infundibular Widening of Angiographically Invisible Duplicate Anterior Choroidal Artery Mimicking Typical Anterior Choroidal Artery Aneurysm | A diagnosis of an intracranial aneurysm depends on the angiographic configuration and should be cautiously differentiated from aneurysm mimics. In cases of duplicate anterior choroidal arteries (AChAs), infundibular widening of the distal minor AChA can be an aneurysm mimic. If the minor AChA with a smaller diameter is obscured angiographically due to poor contrast filling, an associated infundibular widening beside the proximal large AChA can misinterpreted as a typical AChA aneurysm in angiograms. The authors report on two such cases of duplicate AChAs with infundibular widening presenting like a typical AChA aneurysm in angiograms. Surgical exploration revealed a perforating artery emitting from the dome of the saccular lesion, confirming infundibular widening of a duplicate AChA. No reparative procedure was applied to the infundibular widening in a 48-year-old man, while two vascular outpouchings from the infundibular widening were clipped preserving the duplicate AChA in a 55-year-old woman. © 2023 The Korean Neurosurgical Society. | Park, Jaechan; Kim, Jong-Soo | Department of Neurosurgery, Kyungpook National University, Daegu, South Korea; Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea | 44661451000; 57211616209 | jparkmd@hotmail.com; | Journal of Korean Neurosurgical Society | J KOREAN NEUROSURG S | 2005-3711 | 1598-7876 | 66 | 1 | SCIE | CLINICAL NEUROLOGY;SURGERY | 2022 | 1.6 | 68.3 | 0.15 | 2025-06-25 | 1 | Angiogram; Craniotomy; Intracranial aneurysm | adult; aneurysm; aneurysm clipping; anterior choroidal artery; anterior choroidal artery aneurysm; artery dilatation; artery perforation; Article; carotid arteriography; case report; clinical article; craniotomy; digital subtraction angiography; female; human; infundibular widening; internal carotid artery; intracranial aneurysm; male; middle aged; motor evoked potential; saccular aneurysm | English | Final | 2022 | 10.3340/jkns.2022.0046 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Article | Institutional case volume and mortality after aortic and mitral valve replacement: a nationwide study in two Korean cohorts | Background There are only a handful of published studies regarding the volume-outcome relationship in heart valve surgery. We evaluated the association between institutional case volume and mortality after aortic valve replacement (AVR) and mitral valve replacement (MVR). Methods Two separate cohorts of all adults who underwent AVR or MVR, respectively, between 2009 and 2016 were analyzed using a Korean healthcare insurance database. Hospitals performing AVRs were divided into three groups according to the average annual case volume: the low- ( 70 cases/year). Hospitals performing MVRs were also grouped as the low- ( 40 cases/year). In-hospital mortality after AVR or MVR were compared among the groups. Results In total, 7875 AVR and 5084 MVR cases were analyzed. In-hospital mortality after AVR was 8.3% (192/2318), 4.0% (84/2102), and 2.6% (90/3455) in the low-, medium-, and high-volume centers, respectively. The adjusted risk was higher in the low- (OR 2.31, 95% CI 1.73-3.09) and medium-volume centers (OR 1.53, 95% CI 1.09-2.15) compared to the high-volume centers. In-hospital mortality after MVR was 9.3% (155/1663), 6.3% (94/1501), and 2.9% (56/1920) in the low-, medium-, and high-volume centers, respectively. Compared to the high-volume centers, the medium- (OR 1.97, 95% CI 1.35-2.88) and low-volume centers (OR 2.29, 95% CI 1.60-3.27) showed higher adjusted risk of in-hospital mortality. Conclusions Lower case volume is associated with increased in-hospital mortality after AVR and MVR. The results warrant a comprehensive discussion regarding regionalization/centralization of cardiac valve replacements to optimize patient outcomes. | Nam, Karam; Jang, Eun Jin; Jo, Jun Woo; You, Jiwon; Park, Jung-Bin; Ryu, Ho Geol | Seoul Natl Univ, Seoul Natl Univ Hosp, Dept Anesthesiol & Pain Med, Coll Med, 101 Daehak Ro, Seoul 03080, South Korea; Andong Natl Univ, Dept Informat Stat, Andong, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Dept Stat, Daegu, South Korea | ; Ryu, Ho/J-5463-2012 | 55750745300; 37861741600; 57210425017; 57867338400; 57964894000; 7202277246 | hogeol@gmail.com; | JOURNAL OF CARDIOTHORACIC SURGERY | J CARDIOTHORAC SURG | 1749-8090 | 17 | 1 | SCIE | CARDIAC & CARDIOVASCULAR SYSTEMS;SURGERY | 2022 | 1.6 | 68.3 | 0.58 | 2025-06-25 | 3 | 4 | Aortic valve replacement; Case volume; Mitral valve replacement; Surgical prognosis; Volume-outcome relationship | BYPASS GRAFT-SURGERY; HOSPITAL VOLUME; PROCEDURAL VOLUME; OPERATIVE MORTALITY; SURGICAL VOLUME; OUTCOMES; REGIONALIZATION | Aortic valve replacement; Case volume; Mitral valve replacement; Surgical prognosis; Volume-outcome relationship | Adult; Aortic Valve; Cardiac Surgical Procedures; Heart Valve Prosthesis; Humans; Mitral Valve; Republic of Korea; adult; aortic valve replacement; article; centralization; cohort analysis; controlled study; female; health insurance; human; in-hospital mortality; major clinical study; male; mitral valve replacement; mortality; multicenter study; outcome assessment; prognosis; regionalization; aortic valve; epidemiology; heart surgery; heart valve prosthesis; mitral valve; South Korea; surgery | English | 2022 | 2022-08-20 | 10.1186/s13019-022-01945-0 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | True Posterior Communicating Artery Aneurysms with High Risk of Rupture despite Very Small Diameter | Objective : This retrospective study investigated the clinical and angiographic characteristics of ruptured true posterior communicating artery (PCoA) aneurysms in comparison with junctional PCoA aneurysms presenting with a subarachnoid hemorrhage. Methods : The medical records and radiological data of 93 consecutive patients who underwent three-dimensional rotational angiography and surgical or endovascular treatment for a ruptured junctional or true PCoA aneurysm over an 8-year period were examined. Results : The maximum diameter of the ruptured true PCoA aneurysm (n=13, 14.0%) was significantly smaller than that of the ruptured junctional PCoA aneurysms (n=80, 4.45 +/- 1.44 vs. 7.68 +/- 3.36 mm, p=0.001). In particular, the incidence of very small aneurysms <4 mm was 46.2% (six of 13 patients) in the ruptured true PCoA aneurysm group, yet only 2.5% (two of 80 patients) in the ruptured junctional PCoA aneurysm group. Meanwhile, the diameter of the PCoA was significantly larger in the true PCoA aneurysm group than that in the junctional PCoA aneurysm group (1.90 +/- 0.57 vs. 1.15 +/- 0.49 mm, p<0.001). In addition, the ipsilateral PCoA/P1 ratio was significantly larger in the true PCoA aneurysm group than that in the group of a junctional PCoA aneurysm (mean PCoA/P1 ratio +/- standard deviation, 2.67 +/- 1.22 vs. 1.14 +/- 0.88; p<0.001). No between-group difference was identified for the modified Fisher grade, clinical grade at admission, and 3-month modified Rankin Scale score. Conclusion : A true PCoA aneurysm was found to be associated with a larger PCoA and ruptured at a smaller diameter than a junctional PCoA aneurysm. In particular, the incidence of a ruptured aneurysm with a very small diameter <4 mm was significantly higher among the patients with a true PCoA aneurysm. | Shin, Dong Gyu; Park, Jaechan; Kim, Myungsoo; Kim, Byoung-Joon; Shin, Im Hee | Kyungpook Natl Univ, Sch Med, Dept Neurosurg, Daegu, South Korea; Daegu Catholic Univ, Sch Med, Dept Med Stat, Daegu, South Korea | shin, i/JCE-1227-2023 | 57552352200; 44661451000; 57210943611; 57201448189; 16403335700 | jparkmd@hotmail.com; | JOURNAL OF KOREAN NEUROSURGICAL SOCIETY | J KOREAN NEUROSURG S | 2005-3711 | 1598-7876 | 65 | 2 | SCIE | CLINICAL NEUROLOGY;SURGERY | 2022 | 1.6 | 68.3 | 0.15 | 2025-06-25 | 2 | 1 | Internal carotid artery; Intracranial aneurysm; Subarachnoid hemorrhage | UNRUPTURED INTRACRANIAL ANEURYSMS; SUBARACHNOID HEMORRHAGE; CEREBRAL ANEURYSMS; ASPECT RATIO; PATIENT; GUIDELINES; MANAGEMENT | Internal carotid artery; Intracranial aneurysm; Subarachnoid hemorrhage | adult; aneurysm; aneurysm rupture; angiography; Article; coil embolization; digital subtraction angiography; female; human; major clinical study; male; ophthalmoplegia; posterior communicating artery aneurysm; Rankin scale; retrospective study; rupture; subarachnoid hemorrhage | English | 2022 | 2022-03 | 10.3340/jkns.2021.0070 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | A new species of the genus Hypocharassus Mik (Diptera, Dolichopodidae) from Korea | Background The genus Hypocharassus Mik, 1879 has only been recorded in the Nearctic and Oriental regions and, to date, it contains four known species. New information Hypocharassus cavitarsus sp. n. is described from Korea. This is the first record of this genus in the Palearctic Region. A description of the new species and a key to the Hypocharassus species are presented herein. | Kim, Young-Kun; Suh, Sang Jae | Kyungpook Natl Univ, Daegu, South Korea | 57222033782; 15754843200 | sjsuh@knu.ac.kr; | BIODIVERSITY DATA JOURNAL | BIODIVERS DATA J | 1314-2836 | 1314-2828 | 10 | SCIE | BIODIVERSITY CONSERVATION | 2022 | 1.3 | 68.5 | 0 | 2025-06-25 | 0 | 0 | new species; Korea; Dolichopodidae; Hydrophorinae; Hypocharassini; Hypocharassus | Dolichopodidae; Hydrophorinae; Hypocharassini; Hypocharassus; Korea; New species | Korea; geographical distribution; insect; morphology; Nearctic Region; new record; new species | English | 2022 | 2022-06-08 | 10.3897/bdj.10.e82851 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Crystallization and mechanical properties of carbon nanotube/continuous carbon fiber/metallocene polypropylene composites | In this work, a high fluidity polypropylene prepared with the metallocene catalyst (mPP) was used as matrix, carbon nanotube (CNT) and continuous carbon fiber (CCF) were added to prepare composites, and their mechanical properties, melting and crystallization behavior were investigated. In the mechanical properties, the effects of tension force in the preparation process and compatibilizer maleic anhydride grafted polypropylene (MAPP) on the tensile strength of the composites were researched. The results show that the tensile strength of the composites increases first and then decreases with the increase of tractive force. In addition, the melting and crystallization behaviors and dynamic mechanical behaviors of mPP, CNT/mPP and CNT/CCF/mPP composites were characterized and studied by a differential scanning calorimetry (DSC) and dynamic mechanical analyzer (DMA). The results show that the melting point (T (m)), crystallization temperature (T (c)) and storage modulus (E ') of CNT/mPP are all increased by adding 1 wt% CNT, especially the T (c) is increased by 8.8 degrees C. It shows that after CNT was added to mPP as inorganic carbon material, it plays a prominent role in heterogeneous nucleation. After CCF was composited with CNT/mPP, the composites with CCF content of 30 and 42 wt% were prepared, and their T (m), T (c), crystallinity (X (c)) and E ' were all improved, especially E ' was greatly improved, such as the initial E ' was increased by 5.64 and 11.74 times. Even at the end of the curve, the E ' of the composites with CF is still significantly higher than that of mPP and CNT/mPP. It indicates that adding CCF will greatly improved the deformation resistance and load deformation temperature of mPP. | Tan, Hongsheng; Guo, Xiuxue; Tan, Hao; Zhang, Qinglu; Liu, Changheng; Shen, Penghui; Qiao, Liang; Yan, Xu; Jing, Liyue | Shandong Qinghe Chem Technol Co Ltd, Zibo 255000, Peoples R China; Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255049, Peoples R China; Kyungpook Natl Univ, Sch Appl Chem Engn, Polymer Nano Mat Lab, Daegu 41566, South Korea | Zhang, Qing xia/JFH-8246-2023 | 22936036100; 57421126700; 56895457900; 57421556100; 57208653932; 57421448900; 57223314126; 57223314122; 57420908100 | hstan@sdut.edu.cn; | MATERIALS RESEARCH EXPRESS | MATER RES EXPRESS | 2053-1591 | 9 | 1 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 2.3 | 68.5 | 0.65 | 2025-06-25 | 8 | 8 | mPP; carbon nanotube; continuous carbon fiber reinforced; crystallization behavior; dynamic mechanical analysis | MOLECULAR-WEIGHT; RHEOLOGICAL PROPERTIES; FRACTURE-BEHAVIOR; FLAME-RETARDANT; FIBER; IMPREGNATION; NANOTUBE; IMPACT; MATRIX | carbon nanotube; continuous carbon fiber reinforced; crystallization behavior; dynamic mechanical analysis; mPP | Carbon nanotubes; Catalysts; Crystallinity; Deformation; Differential scanning calorimetry; Dynamics; Mapping; Nucleation; Organometallics; Polypropylenes; Reinforced plastics; Tensile strength; Carbon fiber reinforced; Continuous carbon fiber reinforced; Crystallization behavior; Matrix carbon; Melting and crystallization; Melting behavior; Metallocene catalyst; Metallocene polypropylene; MPP; Polypropylene composite; Crystallization | English | 2022 | 2022-01-01 | 10.1088/2053-1591/ac46e6 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of slitting of carbon fiber-reinforced plastic strip on flexural properties of reinforced concrete | In this study, reinforced concrete was manufactured by attaching a carbon fiber reinforced plastic (CFRP) strips to the surface of the concrete. Strips with the same total area were slitted into one, two, three, four, and six pieces and attached to the upper, lower, and side parts of the concrete. The flexural strength and fracture toughness of the reinforced concrete were investigated. As the number of slits in the strip increased, for the upper reinforcement, the flexural strength gradually increased from 7.88 MPa to 11.21 MPa; for the lower reinforcement, the flexural strength increased significantly from 7.88 MPa to 26.48 MPa and then gradually increased to 33.90 MPa; and for the side reinforcement, the flexural strength increased from 7.12 MPa to 13.96 MPa and then gradually decreased. In the adhesive fracture toughness test, the fracture toughness energy significantly increased from 142.38 J m(-2) to 516.63 J m(-2) as the contact area between the adhesive and the strip increased. Therefore, in reinforcing concrete using a CFRP strip, it was confirmed that the reinforcement effect was enhanced when the strip was slit and then attached. | Kwon, Ji Eun; Chae, See Hyeon; Kwon, Sun Min; Jeong, Ye Dam; Jeong, Euigyung; Kim, Jongwon | Yeungnam Univ, Dept Fiber Syst Engn, Gyongsan 38541, South Korea; Kyungpook Natl Univ, Dept Text Syst Engn, Daegu 41566, South Korea | 57672208500; 57670693300; 57671908100; 57671589100; 35885596300; 56263936700 | wolfpack@knu.ac.kr;kjwfiber@ynu.ac.kr; | MATERIALS RESEARCH EXPRESS | MATER RES EXPRESS | 2053-1591 | 9 | 4 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 2.3 | 68.5 | 0 | 2025-06-25 | 0 | 0 | reinforced concrete; carbon fiber-reinforced plastic strip; effective adhesive area; flexural strength; fracture toughness | POLYMER; BEAMS; DESIGN | carbon fiber-reinforced plastic strip; effective adhesive area; flexural strength; fracture toughness; reinforced concrete | Bending strength; Carbon fiber reinforced plastics; Fracture toughness; Reinforced concrete; A-carbon; Adhesive fracture toughness; Carbon fiber-reinforced plastic strip; Carbon-fibre reinforced plastics; Contact areas; Effective adhesive area; Energy; Fiber reinforced plastic strips; Flexural properties; Fracture toughness tests; Adhesives | English | 2022 | 2022-04-01 | 10.1088/2053-1591/ac6a4a | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | First record of the soldier fly genus Beris Latreille (Diptera, Stratiomyidae) from Korea, with designation of two new synonyms | Background The soldier fly subfamily Beridinae in the family Stratiomyidae contains approximately 280 known species, these being distributed across nearly all biogeographical regions with the exception of the polar regions. On the Korean Peninsula, the species diversity of this subfamily has been poorly examined to date, as is reflected in the National species list of Korea by the National Institute of Biological Resources.New information In this paper, the soldier fly genus Beris Latreille is reported for the first time from Korea, based on observations of the following three species: B. fuscipes Meigen, 1820, B. hildebrandtae Pleske, 1930 and B. hirotui Ouchi, 1943. Additionally, the authors propose two nomenclatural acts: 1) B. angustifacies Nagatomi and Tanaka, 1972 syn. nov. = B. hildebrandtae Pleske, 1930; 2) B. liaoningana Cui, Li and Yang, 2010 syn. nov. = B. hildebrandtae Pleske, 1930. The authors also provide an identification key, descriptions, photographs and distributional notes on these Korean species. | Lee, Junho; Suh, Sang Jae | Kyungpook Natl Univ, Sch Appl Biosci, Daegu, South Korea; Kyungpook Natl Univ, Inst Plant Med, Daegu, South Korea; Kyungpook Natl Univ, Dept Plant Protect & Quarantine, Daegu, South Korea | 57219032336; 15754843200 | sjsuh@knu.ac.kr; | BIODIVERSITY DATA JOURNAL | BIODIVERS DATA J | 1314-2836 | 1314-2828 | 10 | SCIE | BIODIVERSITY CONSERVATION | 2022 | 1.3 | 68.5 | 0.16 | 2025-06-25 | 2 | 1 | Beridinae; Beris; Korea; new synonyms; Stratiomyidae; taxonomy | BERIDINAE DIPTERA; CHINA DIPTERA | Beridinae; Beris; Korea; New synonyms; Stratiomyidae; Taxonomy | Korea; biogeography; fly; geographical distribution; identification key; new genus; new record; new species; nomenclature; species diversity; syntaxonomy | English | 2022 | 2022-08-01 | 10.3897/bdj.10.e80487 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Quantum illumination with definite photon-number entangled states | Quantum illumination employs entangled states to detect aweakly reflecting target in a thermal bath. The performance of a given entangled state is evaluated from the minimum error probability in the asymptotic limit, which is compared against the optimal coherent state scheme. Using a relationship between the minimum error probability and quantum Fisher information, we compare the optimal performance of definite photon-number entangled states against that of coherent states under local repetitive strategies. When optimized under the constraint of a fixed total energy, we find that a coherent state outperforms the definite photon-number entangled states with the same signal energy. (C) 2022 Optica Publishing Group | Noh, Changsuk; Lee, Changhyoup; Lee, Su-Yong | Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea; Korea Inst Adv Study, Quantum Universe Ctr, Seoul 02455, South Korea; Korea Res Inst Stand & Sci, Daejeon 34113, South Korea; Agcy Def Dev, Daejeon 34186, South Korea | ; Lee, Changhyoup/J-8766-2012 | 23991025500; 36542879700; 7601405384 | cnoh@knu.ac.kr; | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | J OPT SOC AM B | 0740-3224 | 1520-8540 | 39 | 5 | SCIE | OPTICS | 2022 | 1.9 | 68.5 | 1.06 | 2025-06-25 | 8 | 9 | Photons; Quantum entanglement; Asymptotic limits; Coherent state; Entangled state; Fisher information; Minimum error probability; Performance; Photon numbers; Quantum illuminations; Reflecting targets; Thermal bath; Fisher information matrix | English | 2022 | 2022-05-01 | 10.1364/josab.455994 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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