연구성과로 돌아가기
2022 연구성과 (166 / 280)
※ 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 | Modeling and Optimization of a Micro-Channel Gas Cooler for a Transcritical CO2 Mobile Air-Conditioning System | This study focuses on developing and optimizing of a microchannel gas cooler model for evaluating the performance of a transcritical CO2 mobile air-conditioning system. A simulation model is developed with the aid of MATLAB R2022a. A segment-by-segment modeling approach is utilized by applying the effectiveness-NTU method. State-of-the-art heat transfer and pressure drop correlations are used to obtain air and refrigerant side heat transfer coefficients and friction factors. The developed model is validated through a wide range of available experimental data and is able to predict a gas cooler capacity and pressure drop within an acceptable range of accuracy. The average errors for a gas cooler capacity and pressure drop are 3.79% and 10.24%, respectively. Furthermore, a parametric optimization method is applied to obtain optimal microchannel heat exchanger dimensions, including the number of tubes, microchannel ports, and passes. Different combinations were selected within the practical range to obtain optimal dimensions while keeping the total core volume constant. The simultaneous effect of the number of tubes, the number of ports in each tube, and the number of passes is determined. The objective of the current optimization technique is to minimize the pressure drop for the specific design capacity under different operating conditions without changing the overall volume of the gas cooler. The average pressure drop reduction for the optimal geometry as compared with the baseline geometry under all operating conditions is about 15%. The results from this study can be used to select an optimal geometric design for the required design capacity with a minimal pressure drop without the need for expensive prototype development and testing. | Ullah, Naveed; Ishaque, Shehryar; Kim, Man-Hoe; Choi, Sanghun | Kyungpook Natl Univ, Sch Mech Engn & IEDT, Daegu 41566, South Korea | Choi, Sanghun/AGS-7430-2022; Ullah, Naveed/KHY-0908-2024 | 58032946100; 57212480549; 55686310000; 55847101000 | manhoe.kim@knu.ac.kr; | MACHINES | MACHINES | 2075-1702 | 10 | 12 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;ENGINEERING, MECHANICAL | 2022 | 2.6 | 45.2 | 0.18 | 2025-06-25 | 3 | 3 | microchannel gas cooler; transcritical CO2; mobile air-conditioning system; heat transfer; pressure drop; parametric optimization; thermal performance | THERMAL-HYDRAULIC PERFORMANCE; DESIGN OPTIMIZATION; HEAT; PARAMETERS; FLOW | heat transfer; microchannel gas cooler; mobile air-conditioning system; parametric optimization; pressure drop; thermal performance; transcritical CO<sub>2</sub> | English | 2022 | 2022-12 | 10.3390/machines10121177 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Optimization of Centrifugal Pump Impeller for Pumping Viscous Fluids Using Direct Design Optimization Technique | Pumping viscous fluids using centrifugal pumps in the subsea industry is very common. The pump performance degrades drastically when the viscosity of fluids increases, which ultimately gives rise to the installation and oil production cost. Their design optimization can lead to a significant improvement in their performance. Therefore, this study presented the effect of impeller geometry on pumping fluid viscosity through impeller design optimization. Here, pump operation is simulated numerically by solving the Reynolds-averaged Navier-Stokes (RANS) equations at different flowrates. Experimental testing is also performed using the same oils, for numerical validation. Artificial neural-network-assisted multiobjective optimization was performed with two independent design parameters; wrap angle and splitter blade length of impeller, with head and input power as objective functions. Wrap angle and splitter blade length, both significantly affect pump performance while pumping viscous oils; as the oil viscosity increases, increasing splitter length and decreasing wrap angle improve the head significantly. | Kim, Bubryur; Siddique, Mohammed Hamid; Samad, Abdus; Hu, Gang; Lee, Dong-Eun | Kyungpook Natl Univ, Dept Robot & Smart Syst Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Intelligent Construct Automat Ctr, Daegu 41566, South Korea; Indian Inst Technol Madras, Dept Ocean Engn, Wave Energy & Fluids Engn Lab, Chennai 600036, Tamil Nadu, India; Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China; Kyungpook Natl Univ, Sch Architecture Civil Environm & Energy Engn, Daegu 41566, Peoples R China | Hu, Gang/P-8189-2018; Siddique, Mohammed Hamid/C-4591-2019; HU, Gang/P-8189-2018; Samad, Abdus/B-1641-2008 | 57198355299; 59283384100; 24465559200; 56735061500; 56605563300 | hamidsiddique3@gmail.com; | MACHINES | MACHINES | 2075-1702 | 10 | 9 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;ENGINEERING, MECHANICAL | 2022 | 2.6 | 45.2 | 1.36 | 2025-06-25 | 11 | 15 | computational fluid dynamics; multiobjective optimization; artificial neural network; hydraulic efficiency; vorticity | SHAPE OPTIMIZATION; SPLITTER BLADES; CRUDE-OIL; PERFORMANCE; FLOW; VISCOSITY; ALGORITHM; ANGLE | artificial neural network; computational fluid dynamics; hydraulic efficiency; multiobjective optimization; vorticity | English | 2022 | 2022-09 | 10.3390/machines10090774 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | BlackEye: automatic IP blacklisting using machine learning from security logs | Blacklisting of malicious IP address is a primary technique commonly used for safeguarding mission-critical IT systems. The decision to blacklist an IP address requires careful examination of various aspects of packet traffic data as well as the behavioral history. Most of the current security monitoring for IP blacklisting heavily relies on the domain expertise from experienced specialists. Although there are efforts to apply machine-learning (ML) techniques to this problem, we are yet to see the mature solution. To mitigate these challenges and to gain better understanding of the problem, we have designed the BlackEye framework in which we can apply various ML techniques and produce models for accurate blacklisting. From our analysis results, we learn that multi-staged method that combines the data cleansing and the classification via logistic regression or random forest produces the best results. Our evaluation on the real-world data shows that it can reduce the the incorrect blacklisting by nearly 90% when compared to the performance of experts. More over, our proposed model performed well in terms of the time-to-blacklist by curtailing the period of malicious IP address in activity by 27 days on average. | Jeon, Dooyong; Tak, Byungchul | Kyungpook Natl Univ, 80 Daehakro, Daegu 41566, South Korea | 57212151096; 6506911621 | nunokotzen@gmail.com;bctak@knu.ac.kr; | WIRELESS NETWORKS | WIREL NETW | 1022-0038 | 1572-8196 | 28 | 2 | SCIE | COMPUTER SCIENCE, INFORMATION SYSTEMS;ENGINEERING, ELECTRICAL & ELECTRONIC;TELECOMMUNICATIONS | 2022 | 3 | 45.3 | 0.57 | 2025-06-25 | 8 | 7 | Blacklisting; Security logs; Machine learning; Linear regression | Blacklisting; Linear regression; Machine learning; Security logs | Decision trees; Learning systems; Linear regression; Logistic regression; Blacklisting; Data cleansing; Domain expertise; IP addresss; Mission critical; Packet traffic; Security logs; Security monitoring; Machine learning | English | 2022 | 2022-02 | 10.1007/s11276-019-02201-5 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Low Spurious, Broadband Reflection Frequency Modulation Using an Active Metasurface | By employing varactor diodes in a metasurface, the resonance frequency of a high-impedance surface (HIS) can be changed by a bias voltage. To modulate the frequency of the reflected wave from such surfaces, a phase variation of more than 360 degrees is required. To overcome the phase variation limitation (<360 degrees) in a conventional active metasurface, we fabricated a metasurface with two resonances and manipulated both poles simultaneously to achieve a phase variation exceeding 360 degrees for smooth modulation of the reflection frequency. Because of this wide variation in the reflection phase, it is possible to modulate a broad range of frequencies between 2.75 and 3.25 GHz with up to 1-MHz variation in the modulation frequency. The best spurious-free dynamic range (SFDR) for this frequency range is 20.7 dBc at 3.25 GHz. | Han, Heeje; Park, Soonwoo; Park, Hongwoo; Kim, Hongjoon | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Agcy Def Dev, Daejeon 34060, South Korea | 57191519438; 56843830300; 55573887600; 27169635900 | hongjoon@knu.ac.kr; | IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | IEEE MICROW WIREL CO | 1531-1309 | 1558-1764 | 32 | 4 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2022 | 3 | 45.3 | 0.62 | 2025-06-25 | 4 | 7 | Frequency modulation; Metasurfaces; Resonant frequency; Surface impedance; Varactors; Impedance; Frequency measurement; Doppler shift; frequency modulation; metasurface; tunable surface impedance | Doppler shift; frequency modulation; metasurface; tunable surface impedance | Frequency modulation; Varactors; Broadband reflection; Frequency measurements; Impedance; Metasurface; Phase variation; Surface impedances; Tunable surface impedance.; Tunables; Natural frequencies | English | 2022 | 2022-04 | 10.1109/lmwc.2021.3127316 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | The importance of reconstruction nailing for diaphyseal atypical femoral fractures: a comparative study with standard nailing | Introduction Subtrochanteric atypical femoral fractures (AFFs) usually require long cephalomedullary or reconstruction nailing to achieve satisfactory healing. Recently, this type of nailing has also been recommended to fix diaphyseal AFFs and prevent fragility fractures around the proximal femur, although standard antegrade nailing seems sufficient from a biomechanical perspective. This study aimed to compare treatment outcomes and complications between reconstruction and standard nailing for diaphyseal AFFs. Materials and methods A retrospective comparative study of 48 female patients with diaphyseal AFFs who underwent surgical treatment with either reconstruction or standard nailing was conducted. The reconstruction nailing group comprised 23 patients with a mean age of 74.4 years and included 16 complete and 7 incomplete AFFs. The mean follow-up period was 30 months. The standard nailing group comprised 25 patients with a mean age of 71.1 years and included 16 complete and 9 incomplete AFFs. The mean follow-up period was 57.8 months. The healing rate, time to union, and complications were analyzed and compared between the two groups. Results Bony union was achieved in all 23 cases (100%) of the reconstruction nailing group by a mean of 19.3 weeks postoperative. In the standard nailing group, 23 of 25 cases healed (92%) by a mean of 16 weeks postoperative. The standard nailing group included two delayed fragility fractures of the femoral neck (5 and 10 years after the initial surgery), four cases of newly developed subtrochanteric AFFs at the distal screw of the proximal interlocking screws of the nail (one complete and three incomplete fractures), and two cases of nonunion. Complications only occurred in the standard nailing group (p = 0.01, Fisher's exact test). Conclusions In diaphyseal AFFs, reconstruction nailing may achieve a satisfactory outcome and can also decrease delayed peri-implant fragility fractures of the hip, newly developed subtrochanteric AFFs, and nonunion. | Oh, Chang-Wug; Kim, Joon-Woo; Park, Kyeong-Hyeon; Oh, Jong-Keon; Yoon, Yong-Cheol; Chung, Seung-Ho | Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Sch Med, Dept Orthopaed Surg, 130 Dongduk Ro, Daegu 41944, South Korea; Korea Univ, Dept Orthopaed Surg, Guro Hosp, 148 Gurodong Ro, Seoul 08308, South Korea; Gachon Univ, Coll Med, Orthoped Trauma Div, Trauma Ctr, 21 Namdong Daero 774 Beon Gil, Incheon 21565, South Korea | Yong-Cheol, Yoon/HPD-8077-2023; Park, KyeongHyeon/KEH-4919-2024; Oh, Chang-Wug/AAO-4602-2021 | 22135834200; 22951329000; 56969984400; 7402155046; 37082544400; 57221219695 | joonwoo@knu.ac.kr; | ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY | ARCH ORTHOP TRAUM SU | 0936-8051 | 1434-3916 | 142 | 10 | SCIE | ORTHOPEDICS;SURGERY | 2022 | 2.3 | 45.3 | 0.55 | 2025-06-25 | 4 | 3 | Diaphyseal atypical femoral fracture; Reconstruction nailing; Standard nailing; Complication | FEMUR FRACTURES; SHAFT | Complication; Diaphyseal atypical femoral fracture; Reconstruction nailing; Standard nailing | Aged; Bone Nails; Diaphyses; Female; Femoral Fractures; Fracture Fixation, Intramedullary; Hip Fractures; Humans; Retrospective Studies; Treatment Outcome; adult; age; aged; Article; clinical article; cohort analysis; comparative study; controlled study; disease classification; disease severity; female; femoral neck fracture; femur subtrochanteric fracture; follow up; fracture healing rate; fracture nonunion; fracture treatment; fragility fracture; gender; hip fracture; human; intramedullary nailing; male; peri-implant fracture; postoperative complication; reconstruction nailing; treatment outcome; bone nail; diaphysis; femur fracture; hip fracture; retrospective study; treatment outcome | English | 2022 | 2022-10 | 10.1007/s00402-021-04057-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | The Results of Interfacetal Fusion Using Local Bone Combined With an Atlantoaxial Instrumentation | BACKGROUND: Many studies have described different C1-2 fusion techniques that have evolved over time. We introduced an easy and effective C1-2 fusion technique using local bone chips combined with atlantoaxial instrumentation. OBJECTIVE: To identify the efficacy of interfacetal fusion using local bone combined with atlantoaxial instrumentation by assessment of clinical outcomes and fusion rate. METHODS: We retrospectively reviewed the data from 25 patients who underwent atlantoaxial stabilization surgery using C1-2 pedicle screws and interfacetal bone fusion by a single surgeon between March 2012 and December 2019. RESULTS: The demographics were 15 men and 10 women with a mean age of 57.6 years (range, 27-85 years) at the time of surgery. Three patients underwent surgery for myelopathy due to os odontoideum, 9 for C1-2 instability, 9 for trauma, 3 for rheumatoid arthritis, and 1 for bony spur, C1-2. At 3 months postsurgery, 3 and 21 patients showed 2-point and 1-point improvements in the Nurick grade, respectively. There was no difference in the Nurick score in 1 patient. Seven patients had a computed tomography scan at 1 year after surgery, which revealed a bridging trabecular bone. No movement was observed in the x-ray flexion/extension view at 1 year after surgery in all patients. In addition, no patients complained of postoperative occipital neuralgia. CONCLUSION: This study showed that interfacetal fusion with C1-2 pedicle screws using the free-hand technique was efficient and simple. | Oh, Younggyu; Lee, Byung-Jou; Lee, Subum; Jeon, Sang Ryong; Roh, Sung Woo; Park, Jin Hoon | Univ Ulsan, Asan Med Ctr, Dept Neurol Surg, Coll Med, 88 Olymp Ro 43 Gil, Seoul 05505, South Korea; Inje Univ, Ilsan Paik Hosp, Coll Med, Neurosci & Radiosurg Hybrid Res Ctr,Dept Neurol S, Goyang, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Neurol Surg, Sch Med, Daegu, South Korea | Lee, Subum/AFQ-2764-2022 | 57210737442; 57203372544; 57193631061; 57203521670; 7004951729; 36898773700 | jhpark@amc.seoul.kr; | OPERATIVE NEUROSURGERY | OPER NEUROSURG | 2332-4252 | 2332-4260 | 22 | 5 | SCIE | CLINICAL NEUROLOGY;SURGERY | 2022 | 2.3 | 45.3 | 0.16 | 2025-06-25 | 1 | 1 | Case series; C1-2 fusion; C1-2 pedicle screw; Interfacetal fusion | LATERAL MASS SCREWS; C2 NERVE ROOT; DONOR SITE MORBIDITY; C1 PEDICLE SCREWS; PULLOUT STRENGTHS; FIXATION; GRAFT; TRANSECTION; EXPERIENCE; INSERTION | C1–2 fusion; C1–2 pedicle screw; Case series; Interfacetal fusion | Atlanto-Axial Joint; Axis, Cervical Vertebra; Female; Humans; Male; Middle Aged; Pedicle Screws; Retrospective Studies; Spinal Fusion; adult; aged; anterior posterior axis; Article; atlantoaxial joint; clinical article; clinical outcome; computer assisted tomography; curettage; facetectomy; female; first cervical vertebra; follow up; general anesthesia; human; joint cavity; male; medical record review; middle aged; nerve root; Nurick (grade); odontoid process; osteophyte; postoperative period; prone position; retrospective study; rheumatoid arthritis; second cervical vertebra; sensory evoked potential; skin incision; spinal cord disease; spine fusion; spine injury; spine instability; spine stabilization; spinous process; surgical technique; trabecular bone; vertebral artery; very elderly; X ray analysis; x-ray computed tomography; diagnostic imaging; pedicle screw; procedures; surgery | English | 2022 | 2022-05 | 10.1227/ons.0000000000000124 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | A new species of Neotoxoscelus Fisher, 1921 (Coleoptera, Buprestidae) from South Korea, with an updated checklist | Neotoxoscelus petilus sp. nov. is described from South Korea. Neotoxoscelus Fisher, 1921 is also a new generic record for South Korea. A key to the Neotoxoscelus species and an updated checklist are provided. | Kim, Donguk; Suh, Sang Jae | Kyungpook Natl Univ, Coll Agr & Life Sci, Sch Appl Biosci, Daegu 41566, South Korea; Kyungpook Natl Univ, Inst Plant Med, Daegu 41566, South Korea | Kim, Donguk/AIE-1445-2022 | 57218602310; 15754843200 | sjsuh@knu.ac.kr; | ZOOKEYS | ZOOKEYS | 1313-2989 | 1313-2970 | 1114 | SCIE | ZOOLOGY | 2022 | 1.3 | 45.5 | 0 | 2025-06-25 | 0 | 0 | Buprestidae; jewel beetle; Neotoxoscelus; new species; South Korea; taxonomy | Buprestidae; jewel beetle; Neotoxoscelus; new species; South Korea; taxonomy | English | 2022 | 2022-07-20 | 10.3897/zookeys.1114.81696 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | Meeting Abstract | Comparative Bioactivity of Abamectin Formulations Against the Pine Wood Nematode, Bursaphelenchus Xylophilus | Lee, Jong Won; Okki, M. Abraham; Choi, J. H.; Lee, H.; Lee, D. W. | Kyungpook Natl Univ, Dept Entomol, Sangju, South Korea | JOURNAL OF NEMATOLOGY | J NEMATOL | 0022-300X | 2640-396X | 54 | 1 | SCIE | ZOOLOGY | 2022 | 1.3 | 45.5 | 0 | English | 2022 | 2022-12-10 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | ○ | Article | Dual Fluorescence of Octatetraene Hints at a Novel Type of Singlet-to-Singlet Thermally Activated Delayed Fluorescence Process | A novel type of singlet-to-singlet thermally activated delayed fluorescence (STS-TADF) from the optically bright 1(1)B(u)(+) and dark 2(1)A(g)(-) states of octatetraene is proposed based on state-of-the-art ab initio simulations. The new phenomenon bears similarity with TADF, the key difference being that in the normal TADF the emissive state is repopulated from a nearby triplet, whereas in STS-TADF it occurs from a nearby dark singlet state (2(1)A(g)(-)). The nonadiabatic populations of the bright and dark singlet excited states are dynamically redistributed through a conical intersection mediated by an ultrafast skeleton C-C stretching vibration, establishing a steady state for a sufficiently long time to undergo radiative decay. The steady state manifests itself in the experimentally observed dual fluorescence. It is expected that the STS-TADF can be observed in other it-conjugated chromophores as well. | Park, Woojin; Shen, Jun; Lee, Seunghoon; Piecuch, Piotr; Joo, Taiha; Filatov(Gulak), Michael; Choi, Cheol Ho | Kyungpook Natl Univ, Dept Chem, Daegu 702701, South Korea; Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA; CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA; Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA; Pohang Univ Sci & Technol POSTECH, Dept Chem, Pohang 37673, South Korea | Choi, Cheol Ho/AAA-4705-2020; Piecuch, Piotr/C-4435-2011; Lee, Seunghoon/AAB-4846-2021; Shen, Jun/B-6977-2017; Joo, Taiha/C-4495-2008 | 57223952329; 55726252100; 57194591254; 7003467631; 7004035449; 57771160500; 7402958948 | piecuch@chemistry.msu.edu;thjoo@postech.ac.kr;mike.filatov@gmail.com;cchoi@knu.ac.kr; | JOURNAL OF PHYSICAL CHEMISTRY C | J PHYS CHEM C | 1932-7447 | 1932-7455 | 126 | 35 | SCIE | CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;NANOSCIENCE & NANOTECHNOLOGY | 2022 | 3.7 | 45.5 | 1.14 | 2025-06-25 | 15 | 14 | COUPLED-CLUSTER METHODS; ELECTRONIC-ENERGY LEVELS; LIGHT-EMITTING-DIODES; EXCITED-STATES; CONICAL INTERSECTIONS; INTERNAL-CONVERSION; EXCITATION-ENERGIES; LONG POLYENES; BASIS-SETS; TRANSITION | Excited states; Fluorescence; Stretching; Ab initio simulations; Dual fluorescence; Emissive state; Fluorescence process; Non-adiabatic; On state; Singlet state; State of the art; Steady state; Thermally activated delayed fluorescences; Chromophores | English | 2022 | 2022-08-29 | 10.1021/acs.jpcc.2c04105 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | Meeting Abstract | Morphological Variation in the Rice Root Nematode, Hirschmanniella Oryzae (Van Breda De Haan, 1902) Luc & Goodey, 1964 from Korea, with Inferences from its Ribosomal and Mitochondrial DNA | Mwamula; Lim, T. H.; Kim, Y.; Lee, H.; Kim, Y. H.; Lee, D. W. | Kyungpook Natl Univ, Dept Entomol, Sangju, South Korea; Kyungpook Natl Univ, Dept Ecol Sci, Sangju, South Korea; Nousbo Co Ltd, Suwon, South Korea | JOURNAL OF NEMATOLOGY | J NEMATOL | 0022-300X | 2640-396X | 54 | 1 | SCIE | ZOOLOGY | 2022 | 1.3 | 45.5 | 0 | English | 2022 | 2022-12-10 | 바로가기 | 바로가기 | ||||||||||||||||
| ○ | ○ | Article | Seamless holographic image generation for a multi-vision system | This paper investigates the optical seamlessness of a holographic multi-vision display. The purpose of the multi-vision approach is to scale up the resolution of a holographic display without requiring a single extremely high-resolution spatial light modulator. Optical experiments reveal that a holographic multi-vision system with 16M pixel resolution successfully generates a seamless virtual reference plane with the essential optical characteristics of a holographic display, such as the accommodation effect and binocular parallax. It is realized from a matrix of eight (4x 2) high-resolution transmission-type liquid crystal displays. Theoretical analysis and numerical simulations are presented for the proposed seamless holographic multi-vision system. | Moon, Woonchan; Jeon, Hosung; Park, Sungjae; Kim, Soobin; Kim, Hwi; Hahn, Joonku | Kyungpook Natl Univ, Sch Elect & Elect Engn, 80 Daehak Ro, Daegu 41566, South Korea; Korea Univ, Coll Sci & Technol, Dept Elect & Informat Engn, Sejong Campus,Sejong Ro 2511, Sejong 339700, South Korea | 56340460500; 56663784700; 57193380068; 57193391934; 8933596300; 10142501600 | hwikim@korea.ac.kr;jhahn@knu.ac.kr; | JOURNAL OF INFORMATION DISPLAY | J INFORM DISPLAY | 1598-0316 | 2158-1606 | 23 | 4 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 3.7 | 45.5 | 0.37 | 2025-06-25 | 5 | 5 | Seamless image generation; multi-vision system; binocular holographic display; computer generated hologram | DISPLAY SYSTEM | binocular holographic display; computer generated hologram; multi-vision system; Seamless image generation | Binoculars; Computer generated holography; Electron holography; Geometrical optics; Holograms; Holographic displays; Liquid crystal displays; Binocular holographic display; Computergenerated holograms (CGH); High resolution; Holographic images; Image generations; Multi visions; Multi-vision system; Optical-; Seamless image generation; Vision systems; Light modulators | English | 2022 | 2022-10-02 | 10.1080/15980316.2022.2112313 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | A comparison of determination methods for uranium radioactivity in environmental soil samples using a gamma spectrometer | Comparisons of statistical analysis results between five methods using gamma spectrometry and a control group for measuring the radioactivity of uranium were performed to suggest the optimal method. In the statistical tests including linear regression, and Pearson's correlation all gamma spectrometry methods correlated with the control group method though they had each disadvantage. The Student's t-test results for a novel method 5 including a Th-230 contribution, were 0.986 (U-235) and 1.821 (U-238), respectively. It had the advantage of being more accurate when evaluating the activity of U-235 and U-238 simultaneously. The novel method 5 can thus be recommended over others. | Maeng, Seongjin; Lee, HaeYoung; Park, Seong Jin; Lee, Sang Hoon | Kyungpook Natl Univ, Sch Energy Engn, Daehak ro 80, Daegu 41566, South Korea; Kyungpook Natl Univ, Radiat Sci Res Inst, Daehak ro 80, Daegu 41566, South Korea; Korea Fdn Nucl Safety, Daewangpangyo ro 644beon gil 49, Seongnamsi 13493, South Korea | Maeng, Seongjin/JXW-7080-2024; Lee, Sang Hoon/A-4950-2017 | 56783843400; 57215610100; 57748031800; 56812964000 | lee@knu.ac.kr; | JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | J RADIOANAL NUCL CH | 0236-5731 | 1588-2780 | 331 | 7 | SCIE | CHEMISTRY, ANALYTICAL;CHEMISTRY, INORGANIC & NUCLEAR;NUCLEAR SCIENCE & TECHNOLOGY | 2022 | 1.6 | 45.6 | 0.2 | 2025-06-25 | 2 | 2 | Uranium determination; Soil sample; Gamma spectrometry; Alpha spectrometry | RAY SPECTROMETRY; ICP-MS; U-238; RA-226; PLUTONIUM; FRACTIONATION; TH-232; RATIOS; FIELDS; ENERGY | Alpha spectrometry; Gamma spectrometry; Soil sample; Uranium determination | thorium 230; uranium 235; uranium 238; alpha spectrometry; Article; controlled study; correlation coefficient; environmental monitoring; environmental radioactivity; gamma spectrometry; intermethod comparison; measurement accuracy; radiation monitoring; soil analysis; South Korea; Student t test | English | 2022 | 2022-07 | 10.1007/s10967-022-08379-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Development of Monoclonal Antibody to Specifically Recognize VP0 but Not VP4 and VP2 of Foot-and-Mouth Disease Virus | Foot-and-mouth disease (FMD) is a highly contagious vesicular disease that affects cloven-hoofed animals and often causes enormous economic loss in the livestock industry. The capsid of FMD virus (FMDV) consists of four structural proteins. Initially, one copy each of the proteins VP0, VP3, and VP1 are folded together into a protomer, and five copies of the protomer compose a pentamer. Finally, 12 pentamers are assembled into an icosahedral capsid. At the maturation stage during RNA encapsidation, VP0 is cleaved into VP4 and VP2. The mechanism underlying VP0 maturation remains unclear. While monoclonal antibodies (mAbs) against VP2 have been developed in previous studies, a mAb specific to VP0 has not yet been reported. In this study, we generated VP0-specific mAbs by immunizing mice with peptides spanning the C-terminal amino acids of VP4 and N-terminal amino acids of VP2. We verified that these mAbs displayed specificity to VP0 with no reactivity to VP4 or VP2. Therefore, these mAbs could prove useful in identifying the role of VP0 in FMDV replication and elucidating the mechanism underlying VP0 cleavage into VP4 and VP2. | Park, Sun Young; Jin, Jong Sook; Kim, Dohyun; Kim, Jae Young; Park, Sang Hyun; Park, Jong-Hyeon; Park, Choi-Kyu; Ko, Young-Joon | Anim & Plant Quarantine Agcy, Ctr FMD Vaccine Res, 177 Hyeoksin 8 ro, Gimcheon 39660, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Kyungpook Natl Univ, Anim Dis Intervent Ctr, Daegu 41566, South Korea | ; Park, Sun-Young/B-4634-2014; Kim, Song-Yi/JAC-5358-2023 | 55616559900; 22950662200; 58029271500; 57361996500; 57219557904; 55717103700; 24768064900; 35068343300 | parkck@knu.ac.kr;koyoungjoon@korea.kr; | PATHOGENS | PATHOGENS | 2076-0817 | 11 | 12 | SCIE | MICROBIOLOGY | 2022 | 3.7 | 45.6 | 0.1 | 2025-06-25 | 0 | 1 | foot-and-mouth disease virus; VP0; VP2; VP4; monoclonal antibody | INDEPENDENT DETECTION | foot-and-mouth disease virus; monoclonal antibody; VP0; VP2; VP4 | capsid protein; monoclonal antibody; protein VP0; protein VP1; protein VP2; protein VP3; protein VP4; unclassified drug; amino acid sequence; amino terminal sequence; animal cell; animal experiment; animal model; Article; carboxy terminal sequence; controlled study; cytotoxicity; enzyme linked immunosorbent assay; Escherichia coli; foot and mouth disease; Foot and mouth disease virus; high performance liquid chromatography; immunization; immunohistochemistry; mouse; nonhuman; polyacrylamide gel electrophoresis; sequence analysis; site directed mutagenesis; virus capsid; virus replication; Western blotting | English | 2022 | 2022-12 | 10.3390/pathogens11121493 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Estimation of SARS-CoV-2 Neutralizing Activity and Protective Immunity in Different Vaccine Types Using Three Surrogate Virus Neutralization Test Assays and Two Semiquantitative Binding Assays Targeting the Receptor-Binding Domain | Estimating neutralizing activity in vaccinees is crucial for predicting the protective effect against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). As the plaque reduction neutralization test (PRNT) requires a biosafety level 3 facility, it would be advantageous if surrogate virus neutralization test (sVNT) assays and binding assays could predict neutralizing activity. Here, five different assays were evaluated with respect to the PRNT in vaccinees: three sVNT assays from GenScript, Boditech Med, and SD Biosensor and two semiquantitative binding assays from Roche and Abbott. The vaccinees were subjected to three vaccination protocols: homologous ChAdOx1, homologous BNT162b2, and heterologous administration. The ability to predict a 50% neutralizing dose (ND50) of $20 largely varied among the assays, with the binding assays showing substantial agreement (kappa,;0.90) and the sVNT assays showing relatively poor performance, especially in the ChAdOx1 group (kappa, 0.33 to 0.97). The ability to predict an ND50 value of $118.25, indicating a protective effect, was comparable among different assays. Applying optimal cutoffs based on Youden's index, the kappa agreements were greater than 0.60 for all assays in the total group. Overall, relatively poor performance was demonstrated in the ChAdOx1 group, owing to low antibody titers. Although there were intra-assay differences related to the vaccination protocols, as well as interassay differences, all assays demonstrated fair performance in predicting the protective effect using the new cutoffs. This study demonstrates the need for a different cutoff for each assay to appropriately determine a higher neutralizing titer and suggests the clinical feasibility of using various assays for estimation of the protective effect. IMPORTANCE The coronavirus disease 2019 (COVID-19) pandemic continues to last, despite high COVID-19 vaccination rates. As many people experience breakthrough infection after prior infection and/or vaccination, estimating the neutralization activity and predicting the protective effect are major issues of concern. However, since standard neutralization tests are not available in most clinical laboratories, it would be beneficial if commercial assays could predict these aspects. In this study, we evaluated the performance of three sVNT assays and two semiquantitative binding assays targeting the receptor-binding domain with respect to the PRNT. Our results suggest that these assays could be used for predicting the protective effect by adjusting the cutoffs. | Lee, Beomki; Ko, Jae-Hoon; Lee, Kyoung Hwa; Kim, Yong Chan; Song, Young Goo; Park, Yoon Soo; Baek, Yae Jee; Ahn, Jin Young; Choi, Jun Yong; Song, Kyoung-Ho; Kim, Eu Suk; Bae, Seongman; Kim, Sung-Han; Jeong, Hye Won; Kim, Shin-Woo; Kwon, Ki Tae; Kim, Su-Hwan; Jeong, Hyeonji; Kim, Byoungguk; Kim, Sung Soon; Choi, Won Suk; Peck, Kyong Ran; Kang, Eun-Suk | Sungkyunkwan Univ, Samsung Med Ctr, Dept Lab Med & Genet, Sch Med, Seoul, South Korea; Sungkyunkwan Univ, Samsung Med Ctr, Dept Med, Div Infect Dis,Sch Med, Seoul, South Korea; Yonsei Univ, Gangnam Severance Hosp, Dept Internal Med, Div Infect Dis,Coll Med, Seoul, South Korea; Yonsei Univ, Yongin Severance Hosp, Dept Internal Med, Div Infect Dis,Coll Med, Yongin, South Korea; Yonsei Univ, Severance Hosp, Dept Internal Med, Coll Med, Seoul, South Korea; Seoul Natl Univ, Coll Med, Dept Internal Med, Bundang Hosp, Seongnam, South Korea; Univ Ulsan, Asan Med Ctr, Dept Infect Dis, Coll Med, Seoul, South Korea; Chungbuk Natl Univ, Dept Internal Med, Coll Med, Cheongju, South Korea; Kyungpook Natl Univ, Sch Med, Dept Internal Med, Daegu, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Internal Med,Div Infect Dis, Daegu, South Korea; Korea Dis Control & Prevent Agcy, Chungcheongbuk, South Korea; Korea Univ, Ansan Hosp, Dept Internal Med, Div Infect Dis,Coll Med, Ansan, South Korea | Kim, Eu/J-5424-2012; Choi, Jah/AAA-4835-2022; Jeong, Hye/AET-1982-2022; Lee, Kyoung-Hwa/AAJ-5213-2021; Peck, Kyong Ran/AGV-5205-2022; Kim, Sun/G-3451-2013; Choi, Won/V-2730-2017; Hwang, Soyoon/HHM-5762-2022; Choi, Won Suk/V-2730-2017; Park, Yoon/C-6472-2015 | 57224582420; 55804188300; 56955948100; 36486497700; 55675198500; 7405373036; 57216363310; 57225850337; 57791298700; 23398486700; 22938086900; 57189690904; 55133790400; 13103042700; 8710731500; 9733850500; 57222585718; 57814456600; 57792610600; 57218856689; 56718971800; 55664295200; 20234715300 | cmcws@korea.ac.kr;krpeck@skku.edu;eskang@skku.edu; | MICROBIOLOGY SPECTRUM | MICROBIOL SPECTR | 2165-0497 | 10 | 6 | SCIE | MICROBIOLOGY | 2022 | 3.7 | 45.6 | 1.13 | 2025-06-25 | 11 | 11 | SARS-CoV-2; COVID-19; neutralization tests; sVNT; ChAdOx1; BNT162b2; binding assays | binding assays; BNT162b2; ChAdOx1; COVID-19; neutralization tests; SARS-CoV-2; sVNT | reactive oxygen metabolite; tozinameran; area under the curve; Article; coronavirus disease 2019; human; immunity; plaque reduction neutralization test; quantitative assay; receptor binding; Severe acute respiratory syndrome coronavirus 2; virus neutralization; virus neutralization test | English | 2022 | 2022-12-21 | 10.1128/spectrum.02669-22 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Separation and purification of Sr-90 nuclide from a waste mixture | Sr-90 is utilized as a raw material in various fields such as nuclear batteries, medical applications, and industrial use as a beta particle source. Therefore, high-purity Sr-90 is required to increase the thermal efficiency of nuclear battery operation or to prevent side effects on the human body during its use in medical therapy. Sr-90 is present in spent nuclear fuel and can be separated via reactive distillation through a pyrochemical process developed at the Korea Atomic Energy Research Institute, where Ba is obtained simultaneously via co-precipitation owing to its chemical similarity. In addition, Sr-90 decays into Zr-90 during the storage period after separation. Therefore, Ba and Zr-90 should be separated to obtain high-purity Sr-90 nuclides. In the present study, a separation and purification process is developed for the recovery of Sr-90 from a waste mixture containing Sr-90, Ba, and Zr-90. To separate Ba and Zr-90, the chromate precipitation reaction is modified via pH control, which can enhance the precipitation efficiency of Ba and prevent the co-precipitation of Sr owing to the excess amount of precipitants. A systematic study is conducted to optimize Sr-90 separation and purification processes, where a high yield of 84.3% is obtained, and a high purity exceeding 99.9% is maintained. | Lee, Byeonggwan; Choi, Jung-Hoon; Lee, Ki Rak; Kang, Hyun Woo; Eom, Hyeon Jin; Shin, Kyuchul; Park, Hwan-Seo | Korea Atom Energy Res Inst, Radioact Waste Treatment Res Team, 111 Daedeok Daero 989, Daejeon 34057, South Korea; Kyungpook Natl Univ, Dept Hydrogen & Renewable Energy, 80 Daehak Ro, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Appl Chem, 80 Daehak Ro, Daegu 41566, South Korea | Lee, Byeonggwan/HPD-2363-2023 | 57201269846; 56227488100; 14420116600; 55128039500; 57222569272; 14030501800; 56175751900 | mrchoijh@kaeri.re.kr; | JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | J RADIOANAL NUCL CH | 0236-5731 | 1588-2780 | 331 | 1 | SCIE | CHEMISTRY, ANALYTICAL;CHEMISTRY, INORGANIC & NUCLEAR;NUCLEAR SCIENCE & TECHNOLOGY | 2022 | 1.6 | 45.6 | 0.29 | 2025-06-25 | 2 | 3 | Strontium-90; Nuclide separation; Purification; Precipitation; Spent nuclear fuel recycling; Heat source | PYROCHEMICAL PROCESS; EXCHANGE-RESIN; STRONTIUM | Heat source; Nuclide separation; Precipitation; Purification; Spent nuclear fuel recycling; Strontium-90 | barium; strontium 90; unclassified drug; zirconium; zirconium 90; Article; chemical composition; inductively coupled plasma atomic emission spectrometry; precipitation; purification; reaction optimization; X ray diffraction | English | 2022 | 2022-01 | 10.1007/s10967-021-08082-3 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
페이지 이동: