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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 | Effects of laser annealing on polymer sheets using a laser-diode with a wavelength of 408 nm | Transparent polymer sheets (PET, PEN, PI) were treated in a vacuum condition by a laser-diode (wavelength: 408 nm). The polymers were decomposed thermally with an endothermic reaction by the laser heating, and carbonization, due to the evolution of gaseous products including CO and CO2, occurred on the surface. The heating mechanism of the polymers was summarized as the formation of carbonized layer on polymer sheets and the thermal conduction due to the heating of carbonized layer by the laser-diode. Thus, it is concluded that the choice of an appropriate wavelength for the laser-diode can facilitate modification processes for various transparent polymers. | Lee, Sung-Youp; Kim, Hong Tak | Kyungpook Natl Univ, Dept Phys, Daegu, South Korea; Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea | 14830491400; 7410138212 | zam89blue@gmail.com; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 735 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.15 | 2025-06-25 | 1 | 2 | Adsorption; carbonization; decomposition; laser diode; transparent polymer | PYROLYSIS | Adsorption; carbonization; decomposition; laser diode; transparent polymer | Annealing; Carbonization; Diodes; Polyethylene terephthalates; Carbonized layers; Endothermic reactions; Gaseous products; Heating mechanisms; Modification process; Thermal conduction; Transparent polymer; Vacuum condition; Polymers | English | 2022 | 2022-03-04 | 10.1080/15421406.2021.1972222 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Morphological properties of one-dimensional ZnO nanostructures grown by thermal chemical vapor deposition with defferent source materials | One-dimensional (1D) ZnO nanostructures showing various shapes were synthesized on ZnO-deposited Si substrates using a thermal chemical vapor deposition technique and their morphological, crystallographic, and optical properties were investigated. Relative to ZnO nanostructures prepared at 700 degrees C, the nanostructures synthesized at 900 degrees C increased in grain size and were tapered, resulting in the tapering of the 1D ZnO nanostructures. However, the morphologies of two samples fabricated using different source materials are different from each other, which is probably related to the producer gas reactions due to a carbothermal reduction process. All samples showed hexagonal wurtzite structures with a preferred orientation of the (002) plane and revealed photoluminescence spectra with different optical trapping at surface defect states and oxygen vacancies. | Choi, Seok Cheol; Lee, Do Kyung; Sohn, Sang Ho | LG Elect, Dept Proc Dev, Gumi, Gyeongbuk, South Korea; Daegu Catholic Univ, Sch Adv Mat Sci & Chem Engn, Gyongsan 38430, Gyeongbuk, South Korea; Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea | 59102851900; 55941000700; 7101646506 | dokyung@cu.ac.kr;shsohn@knu.ac.kr; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 735 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.08 | 2025-06-25 | 1 | 1 | Growth temperature; seed layer; source materials; ZnO nanostructure | TEMPERATURE; PHOTOLUMINESCENCE; FABRICATION; CONVERSION | Growth temperature; seed layer; source materials; ZnO nanostructure | Carbothermal reduction; Chemical vapor deposition; II-VI semiconductors; Nanostructures; Optical properties; Oxide minerals; Photoluminescence; Surface defects; Zinc sulfide; Hexagonal wurtzite structure; Morphological properties; Photoluminescence spectrum; Preferred orientations; Source material; Surface defect state; Thermal chemical vapor deposition; ZnO nanostructures; Zinc oxide | English | 2022 | 2022-03-04 | 10.1080/15421406.2021.1972236 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Synthesis and characterization of poly(pyrrole-co-aniline) copolymer using atmospheric pressure plasma polymerization | This paper investigates the characteristics of poly(pyrrole-co-aniline) copolymer (PYPAN) films deposited by using an atmospheric pressure plasma (APP) polymerization relative to various concentrations of aniline and pyrrole monomers. The surface morphology and structure properties of PYPAN films are observed to strongly depend on the pyrrole concentration (%), which is confirmed by Field emission-scanning electron microscopy (FE-SEM), Fourier transforms-infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time of flight-secondary ion mass spectrometry (ToF-SIMS). In particular, it is observed that the PYPAN film grown at an optimal pyrrole concentration condition (that is, aniline 25% and pyrrole 75%) shows a lower electrical resistance and higher deposition rate. | Jung, Eun Young; Park, Choon-Sang; Jang, Hyo Jun; Bae, Gyu Tae; Shin, Bhum Jae; Tae, Heung-Sik | Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu, South Korea; Kansas State Univ, Dept Elect & Comp Engn, Coll Engn, Manhattan, KS 66506 USA; Sejong Univ, Dept Elect Engn, Seoul, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu 41566, South Korea | ; Shin, BhumJae/AEV-2572-2022 | 57203199724; 16025295400; 57207956623; 57202369078; 7103027782; 7006298844 | hstae@ee.knu.ac.kr; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 733 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.31 | 2025-06-25 | 4 | 4 | Aniline; atmospheric pressure plasma (APP) polymerization; conducting polymer; poly(pyrrole-co-aniline) copolymer; pyrrole | POLYANILINE FILMS; THIN-FILMS; PYRROLE; ANILINE | Aniline; atmospheric pressure plasma (APP) polymerization; conducting polymer; poly(pyrrole-co-aniline) copolymer; pyrrole | Aniline; Atmospheric pressure; Deposition rates; Enamels; Field emission microscopes; Fourier transforms; Infrared spectroscopy; Morphology; Organic polymers; Plasma polymerization; Scanning electron microscopy; Secondary ion mass spectrometry; Surface morphology; X ray photoelectron spectroscopy; Atmospheric pressure plasmas; Electrical resistances; Field emission scanning electron microscopy; Fourier transforms infrared spectroscopies; Morphology and structures; Pyrrole monomers; Synthesis and characterizations; Time of flight secondary ion mass spectrometry; Aromatic compounds | English | 2022 | 2022-06-21 | 10.1080/15421406.2021.1972205 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Synthesis of polyvinylidene fluoride film using novel atmospheric pressure plasma deposition with direct-injection nozzle | This paper proposes a new atmospheric pressure plasma (APP) deposition system with direct-injection nozzle (modified-APPDS) for depositing the polyvinylidene fluoride (PVDF) thin film. In the modified-APPDS, the key parameters such as length of guide-tube, distance of bluff-body, gas composition, and gas flow rates are examined for generating glow-like intense plasma. As a result, the intense glow-like plasma generated broadly by the modified-APPDS can uniformly deposit the PVDF thin film, which is confirmed by field emission-scanning electron microscopy (FE-SEM) and Fourier transforms-infrared spectroscopy (FT-IR). | Bae, Gyu Tae; Park, Choon-Sang; Jung, Eun Young; Kim, Daseulbi; Jang, Hyo Jun; Shin, Bhum Jae; Tae, Heung-Sik | Kyungpook Natl Univ, Coll IT Engn, Sch Elect & Elect Engn, Daegu 41566, South Korea; Kansas State Univ, Coll Engn, Dept Elect & Comp Engn, Manhattan, KS 66506 USA; Sejong Univ, Dept Elect Engn, Seoul 05006, South Korea; Kyungpook Natl Univ, Coll IT Engn, Sch Elect Engn, Daegu 702701, South Korea | Shin, BhumJae/AEV-2572-2022 | 57202369078; 16025295400; 57203199724; 57203012610; 57207956623; 7103027782; 7006298844 | hstae@ee.knu.ac.kr; | MOLECULAR CRYSTALS AND LIQUID CRYSTALS | MOL CRYST LIQ CRYST | 1542-1406 | 1563-5287 | 733 | 1 | SCIE | CHEMISTRY, MULTIDISCIPLINARY;CRYSTALLOGRAPHY;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 0.7 | 90.4 | 0.08 | 2025-06-25 | 2 | 1 | Atmospheric pressure; direct-injection nozzle; flexible optoelectronic device; plasma deposition; PVDF thin film | Atmospheric pressure; direct-injection nozzle; flexible optoelectronic device; plasma deposition; PVDF thin film | Atmospheric pressure; Deposition; Direct injection; Enamels; Extraction; Field emission microscopes; Flow of gases; Fluorine compounds; Fourier transforms; Infrared spectroscopy; Nozzles; Optoelectronic devices; Scanning electron microscopy; Atmospheric pressure plasma deposition; Direct-injection nozzle; Flexible optoelectronic device; Flexible optoelectronics; Injection nozzles; Optoelectronics devices; Polyvinylidene fluoride films; Polyvinylidene fluoride thin film; Polyvinylidene fluorides; Thin-films; Thin films | English | 2022 | 2022-06-21 | 10.1080/15421406.2021.1972207 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Characteristics and anti-inflammatory effects of the enzymatically extracted polysaccharides of Sargassum fulvellum using crude enzyme from Shewanella oneidensis PKA 1008 | Alginic acid is a polysaccharide obtained from brown algae, and its oligosaccharide has various functions such as antiviral, antitumor, immunoregulation, and antioxidant. However, because of its high viscosity, numerous studies have degraded the alginic acid by enzymes to improve its utilisation. In the present work, we characterised Sargassum fulvellum enzymatic extract (SFEE) using polysaccharide-degrading enzyme obtained from Shewanella oneidensis PKA 1008, and investigated its anti-inflammatory potential. S. fulvellum powder and crude enzyme were mixed at a ratio of 1:1 (v/v), and reacted at 30 degrees C for 0 - 48 h to obtain the optimum degrading time. The changes in pH, colour, reducing sugar, and viscosity of SFEE were determined. The anti-inflammatory activity of SFEE was confirmed by measuring the expression level of nitric oxide (NO) and pro-inflammatory cytokines (IL-6, TNF-alpha, and L-1 beta) in RAW 264.7 macrophage cell line. The reducing sugar content was found to increase 2.75-fold at 24 h as compared to that at the initial reaction point, but pH and viscosity decreased significantly with increasing reaction time. SFEE showed a high inhibitory effect on the levels of NO and pro-inflammatory cytokines. SFEE thus has great potential for development as a functional food and therapeutic material owing to its anti-inflammatory effect. (c) All Rights Reserved | Xu, X. T.; Jeong, S. M.; Lee, J. E.; Kang, W. S.; Ryu, S. H.; Kim, K.; Byun, E. H.; Cho, Y. J.; Ahn, D. H. | Pukyong Natl Univ, Dept Food Sci & Technol, Busan 48513, South Korea; Pukyong Natl Univ, Inst Fisheries Sci, Busan 46041, South Korea; Kongju Natl Univ, Dept Food Sci & Technol, Chungnam 32439, South Korea; Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu 41566, South Korea | 57201398269; 57209240560; 57225029881; 57220543072; 57220657489; 24289349800; 57214715272; 55265396300; 35482984600 | dhahn@pknu.ac.kr; | INTERNATIONAL FOOD RESEARCH JOURNAL | INT FOOD RES J | 1985-4668 | 2231-7546 | 29 | 6 | SCIE | FOOD SCIENCE & TECHNOLOGY | 2022 | 0.8 | 90.5 | 0 | 2025-06-25 | 0 | 0 | anti-inflammatory effect; degradation; Sargassum fulvellum enzymatic extract; Shewanella oneidensis PKA 1008 | ALGINATE; SEAWEED | Anti-inflammatory effect; Degradation; Sargassum fulvellum enzymatic extract; Shewanella oneidensis pka 1008 | English | 2022 | 2022-12 | 10.47836/ifrj.29.6.04 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Suppressive activity of RGX-365 on HMGB1-mediated septic responses | RGX-365 is the main fraction of black ginseng conmprising protopanaxatriol (PPT)-type rare ginsenosides (ginsenosides Rg4, Rg6, Rh4, Rh1, and Rg2). No studies on the antiseptic activity of RGX-365 have been reported. High mobility group box 1 (HMGB1) is recognized as a late mediator of sepsis, and the inhibition of HMGB1 release and recovery of vascular barrier integrity have emerged as attractive therapeutic strategies for the management of sepsis. In this study, we examined the effects of RGX-365 on HMGB1-mediated septic responses and survival rate in a mouse sepsis model. RGX-365 was administered to the mice after HMGB1 challenge. The antiseptic activity of RGX-365 was assessed based on the production of HMGB1, measurement of permeability, and septic mouse mortality using a cecal ligation and puncture (CLP)-induced sepsis mouse model and HMGBI-activated human umbilical vein endothelial cells (HUVECs). We found that RGX-365 significantly reduced HMGB1 release from LPS-activated HUVECs and CLP-induced release of HMGB1 in mice. RGX-365 also restored HMGBI-mediated vascular disruption and inhibited hyperpermeability in the mice. In addition, treatment with RGX-365 reduced sepsis-related mortality in vivo. Our results suggest that RGX-365 reduces HMGB1 release and septic mortality in vivo, indicating that it is useful in the treatment of sepsis. | Lee, Wonhwa; Kim, Ji-Eun; Yang, Sumin; Lee, Bong-Seon; Cho, Soo-Hyun; Lee, Jee-Hyun; Choi, Ga-Eun; Park, Eui Kyun; Song, Gyu-Yong; Bae, Jong-Sup | Korea Res Inst Biosci & Biotechnol KRIBB, Aging Res Ctr, Daejeon 34141, South Korea; Chungnam Natl Univ, Coll Pharm, 99 Daehak Ro, Daejon 34134, South Korea; Kyungpook Natl Univ, Coll Pharm, CMRI, Res Inst Pharmaceut Sci,BK21 Plus KNU Multiom Bas, Daegu 41566, South Korea; AREZ Co Ltd, 197 Songam Ro, Sejong 30066, South Korea; Kyungpook Natl Univ, Dept Pathol & Regenerat Med, Sch Dent, Daegu 41940, South Korea | ; Lee, Wonhwa/GLQ-6506-2022; Bae, Jong-Sup/AAU-9724-2020; Cho, Ik-Hyun/A-9348-2014 | 50161632800; 55812501900; 57204186412; 57204178543; 56585060900; 59098097700; 57207762472; 37071072400; 7402253074; 16021543200 | gysong@cnu.ac.kr;baejs@knu.ac.kr; | BRAZILIAN JOURNAL OF PHARMACEUTICAL SCIENCES | BRAZ J PHARM SCI | 1984-8250 | 2175-9790 | 58 | SCIE | PHARMACOLOGY & PHARMACY | 2022 | 1.3 | 90.5 | 0 | 2025-06-25 | 0 | 0 | RGX-365; Permeability; HMGB1; Sepsis | SEPSIS; GINSENOSIDES; GINSENG; LIPOPOLYSACCHARIDE; MEDIATOR; RECEPTOR; HMG-1; RG1 | HMGB1; Permeability; RGX-365; Sepsis | ginseng extract; ginsenoside Re; ginsenoside Rg 2; ginsenoside Rh 2; high mobility group B1 protein; lipopolysaccharide; mercaptoethanol; mitogen activated protein kinase; penicillin G; streptomycin; animal cell; animal model; animal tissue; Article; cell viability assay; cytokine production; gene expression; high performance liquid chromatography; in vitro study; in vivo study; male; mouse; MTT assay; nonhuman; permeability; protein expression; sepsis; umbilical vein endothelial cell | English | 2022 | 2022 | 10.1590/s2175-97902022e19473 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Clinical, electrophysiological, and genetic characteristics of cerebrotendinous xanthomatosis in South Korea | Cerebrotendinous xanthomatosis (CTX) is an autosomal recessive lipid storage disorder caused by 27-hydroxylase deficiency. We report the clinical characteristics of six Korean CTX patients. The median age of onset was 22.5 years, the median age at diagnosis was 42 years, and the diagnostic delay was 18.1 years. The most common clinical symptoms were tendon xanthoma and spastic paraplegia. Four of five patients exhibited latent central conduction dysfunction. All patients carried the same mutation in CYP27A1 (c.1214 G>A [p.R405Q]). CTX is a treatable neurodegenerative disorder; however, our results revealed that patients with CTX in Korea might receive the diagnosis after a prolonged delay. | Kim, Sunyoung; Park, Jin-Sung; Lee, Jae-Hyeok; Shin, Ha-Young; Yang, Hui-Jun; Shin, Jin-Hong | Univ Ulsan, Ulsan Univ Hosp, Dept Neurol, Coll Med, Ulsan, South Korea; Kyungpook Natl Univ, Chilgok Hosp, Sch Med, Dept Neurol, Daegu, South Korea; Pusan Natl Univ, Yangsan Hosp, Dept Neurol, Yangsan, South Korea; Yonsei Univ, Dept Neurol, Coll Med, Seoul, South Korea; Pusan Natl Univ, Yangsan Hosp, Dept Neurol, 20 Geumo Ro, Yangsan 50612, South Korea | Lee, Jae-Hyeok/ISV-2976-2023; Shin, Jin-Hong/AAZ-8809-2020; YANG, June/AHC-4229-2022 | 57196226825; 44061744500; 57226781339; 7404012350; 40662011700; 36538204000 | shinzh@gmail.com; | NEUROCASE | NEUROCASE | 1355-4794 | 1465-3656 | 28 | 6 | SCIE | CLINICAL NEUROLOGY;PSYCHIATRY;PSYCHOLOGY | 2022 | 0.8 | 90.7 | 0.28 | 2025-06-25 | 2 | 2 | Cerebrotendinous xanthomatosis; neurodegenerative disorder; spastic paraplegia; xanthoma; cholestanol | PARKINSONISM; DIAGNOSIS; SPECTRUM | Cerebrotendinous xanthomatosis; neurodegenerative disorder; spastic paraplegia; xanthoma, cholestanol | Adult; Cholestanetriol 26-Monooxygenase; Delayed Diagnosis; Humans; Mutation; Republic of Korea; Xanthomatosis, Cerebrotendinous; Young Adult; 18F n (3 fluoropropyl) 2 beta carboxymethoxy 3 beta (4 iodophenyl) nortropane; cholestanetriol 26 monooxygenase; cholestanol; cholesterol; dopamine transporter; fluorodeoxyglucose f 18; high density lipoprotein cholesterol; low density lipoprotein cholesterol; unclassified drug; cholestanetriol 26 monooxygenase; Achilles tendon; adult; Article; axonal neuropathy; cataract; central conduction dysfunction; cerebellar ataxia; cerebrotendinous xanthomatosis; child; clinical article; clinical assessment; controlled study; cortical atrophy; degenerative disease; electronic medical record; electrophysiology; female; gene mutation; genetic screening; human; lipid analysis; male; mental deficiency; middle aged; motor nerve conduction study; nuclear magnetic resonance imaging; parkinsonism; periventricular white matter change; peroneal motor action potential; polyneuropathy; positron emission tomography; retrospective study; Sanger sequencing; school child; sensory evoked potential; spastic paraplegia; subcutaneous tuberous xanthoma; sural nerve action potential; T2 weighted imaging; tendon xanthoma; triacylglycerol blood level; voiding difficulty; xanthoma; young adult; delayed diagnosis; genetics; mutation; South Korea | English | 2022 | 2022-11-02 | 10.1080/13554794.2023.2176777 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | A study of the beam quality correction factor in clinical proton beam conditions using Monte Carlo simulations | When measuring the absorbed dose from a proton beam, the beam quality correction factor provided by IAEA TRS-398 has been used. However, that factor calculates the absorbed dose by applying the same value to clinical dosimetry without considering the initial energy of the radiation particle or the energy spectrum at the measurement position. In this study, the beam quality correction factors for the PTW 30013 farmer chamber and the PTW Advanced Markus chamber are calculated by using the TOPAS Monte Carlo simulation program to implement various clinical proton beam conditions of the National Cancer Center. In both chamber simulations, the quality correction factor measured at the Spread-Out Bragg Peak (SOBP) region shows a good agreement with the quality correction factors suggested by TRS-398. However, the quality correction factor increases at a single Bragg Peak region by 2.4% for the PTW Advanced Markus chamber and 7.1% for the PTW 30013 farmer chamber in the clinical dosimetry scenarios. The precise measurement of beam quality correction factors for mono-energy proton beams using the Monte Carlo technique is required in future studies. | Kwon, Yong-Cheol; Pak, Sang-Il; Jo, Hyon-Suk; Jeong, Seonghoon; Lee, Se Byeong; Kim, In Jung; Yi, Chul-Young; Shin, Wook-Geun | Kyungpook Natl Univ, Dept Phys, Deagu 41566, South Korea; Proton Therapy Ctr, Natl Canc Ctr, Goyang 10408, South Korea; Korea Res Inst Stand & Sci, Ionizing Radiat Metrol Grp, Daejeon, South Korea; Seoul Natl Univ Hosp, Dept Radiat Oncol, Seoul 03080, South Korea | ; kim, nayoung/IWV-4038-2023; Shin, Wook-Geun/ITT-7020-2023; Lee, Si/ABH-1408-2020; Jo, Hyon-Suk/HGC-7070-2022 | 57353824300; 57193386696; 35227429400; 56421049500; 15026501100; 55477753800; 55084176700; 56575915800 | hyonsuk@knu.ac.kr;sblee@ncc.re.kr; | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | J KOREAN PHYS SOC | 0374-4884 | 1976-8524 | 81 | 11 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0 | 2025-06-25 | 0 | 0 | Radiation dosimetry; Proton therapy; Beam quality correction factors; Monte Carlo simulation | Beam quality correction factors; Monte Carlo simulation; Proton therapy; Radiation dosimetry | English | 2022 | 2022-12 | 10.1007/s40042-022-00573-0 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Characteristics and improved method of vacuum plug brazing for RFQ fabrication | At the Korea Multi-purpose Accelerator Complex (KOMAC), a radiofrequency quadrupole (RFQ)-based compact accelerator with 1 MeV/n output energy is under development, mainly for the test stand for developing accelerator technology and studying beam physics as well as for ion beam applications including semiconductor irradiation and neutron generation. The manufacturing procedure of an RFQ is complex, including two stages of brazing; one for plugging the cooling channel and the other is part assembling. The first brazing step plays the role of annealing process as well to relieve the stress generated during machining. Securing vacuum tightness after brazing is crucial, however, we experienced several failures in the plug brazing during the fabrication of the RFQ. Therefore, we investigated the characteristics of the plug brazing by conducting specimen tests and improved the brazing method based on the test results. This paper explains the successful and reliable approach for the plug brazing of a large structure. | Kim, Kyung Hyun; Kim, Han Sung; Kwon, Hyeok Jung; Yoon, Sang Pil; Jeong, Hae Seong; Kim, Seong Gu; Jung, Won Hyeok; Hong, Jung Goo | Korea Atom Energy Res Inst, Korea Multipurpose Accelerator Complex, Gyeongju 38180, South Korea; Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea | Kim, Seong/J-5215-2019 | 57204432703; 57191717940; 7401837990; 55479237400; 58380753100; 57193625550; 57222019810; 24576652200 | jghong70@knu.ac.kr; | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | J KOREAN PHYS SOC | 0374-4884 | 1976-8524 | 81 | 12 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0.16 | 2025-06-25 | 2 | 2 | RFQ; Vacuum brazing; KOMAC; Plug; Capillary | Capillary; KOMAC; Plug; RFQ; Vacuum brazing | English | 2022 | 2022-12 | 10.1007/s40042-022-00658-w | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Development of cryogenic thermoluminescence measurement system and performance test on Na2W2O7 single crystal | In this study, we developed a cryogenic thermoluminescence (TL) measurement system and evaluated its performance. A graphical user interface-based data acquisition software is programmed to control the whole system, which includes the thermostat, photomultiplier tube, and counter. To test the measurement system, we use Na2W2O7 (NWO) crystal. The NWO crystal was grown with a conventional Czochralski system. At room temperature (300 K), a broadband emission spectra of the crystal was obtained in the range of 340-790 nm under the excitation of a 280 nm light emitting diode (LED) source. The glow curves of NWO crystals were measured from 9 to 300 K with the cryogenic TL measurement system developed in this study. Six glow peaks at 23, 35, 110, 143, 178, and 231 K were observed from 9 to 300 K. The measured glow curves were analyzed by computerized glow curve deconvolution technique. The activation energy, order of kinetics, frequency factor, and figure of merit (FOM) for each peak were obtained. The calculated FOMs for all glow peaks were found to be less than 4%, which confirmed that the developed cryogenic TL measurement system works well. | Cheon, Jong-kyu; Kim, Seonghwan; Pandey, Indra; Kim, Hongjoo | Sorabol Univ, Dept Radiat, 516 Taejong Ro, Gyeongju Si 38063, Gyeongbuk, South Korea; Cheongju Univ, Dept Radiol Sci, 298 Daesung Ro, Cheongju 28503, South Korea; Kyungpook Natl Univ, Dept Phys, 80 Daehak Ro, Daegu Si 41566, South Korea | Kim, Hong Joo/AAE-1178-2022 | 7004902067; 57855235700; 57188976474; 59051568100 | jkcheon@sorabol.ac.kr; | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | J KOREAN PHYS SOC | 0374-4884 | 1976-8524 | 81 | 8 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0.08 | 2025-06-25 | 1 | 1 | Cryogenic thermoluminescence measurement system; Conventional Czochralski technique; Deconvolution technique | SCINTILLATORS; GROWTH | Conventional Czochralski technique; Cryogenic thermoluminescence measurement system; Deconvolution technique; Na2W2O7 crystal | English | 2022 | 2022-10 | 10.1007/s40042-022-00583-y | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Electronically Excited States in Model Complexes of Noble Metal Clusters with Carbon Nanodots | Theoretical calculations of excited states in the complexes of gold and silver three-atom nanoclusters with carbon quantum nanodots are performed using the M062X functional and the def2SVP {H}/def2TZVP/def2TZVPP{Ag, Au} hybrid basis set. A subsequent calculation of the excited states is performed in an approximation of the time-dependent density functional theory implemented in Gaussian09. The chromophore centers of the nanodots are modeled by heterocyclic molecules of isoquino-diazaanthracene and benzopyrano-diazanaphthalene. The clusters are attached to the nanodots using ethyl mercaptan and methoxyethane bridges of various lengths. The energy transfer channels are considered depending on the mutual arrangement of energy levels of clusters and heterocycles. | Pomogaev, V. A.; Lee, H. J.; Goh, E.; Tchaikovskaya, O. N.; Kononov, A., I; Avramov, P., V | Natl Res Tomsk State Univ, Tomsk, Russia; Kyungpook Natl Univ, Daegu, South Korea; St Petersburg State Univ, St Petersburg, Russia | Kononov, Alexei/JDC-8986-2023; Tchaikovskaya, Olga/O-6715-2014; Pomogaev, Vladimir/E-5049-2014; Kononov, Alexei/J-4745-2012 | 6603016010; 56569175200; 57194014885; 6602638099; 7006804718; 7004322420 | vapom@mail.tsu.ru;hyejinlee@knu.ac.kr;tchon@phys.tsu.ru;paul.veniaminovich@knu.ac.kr; | RUSSIAN PHYSICS JOURNAL | RUSS PHYS J+ | 1064-8887 | 1573-9228 | 64 | 11 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0.16 | 2025-06-25 | 2 | 2 | excitation energy transfer; metal clusters; carbon nanodots; photophysical processes | FLUORESCENT SILVER CLUSTERS; GRAPHENE QUANTUM DOTS; LIGHT | carbon nanodots; excitation energy transfer; metal clusters; photophysical processes | English | 2022 | 2022-03 | 10.1007/s11182-022-02558-9 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Experimental and Theoretical Study of Spectroscopy of Binuclear Difluoroborate Dipyrromethene Complexes | The spectroscopic characteristics of mono and binuclear difluoroborate complexes of dipyrromethenes in various solvents and solid-state polymer media (films) are investigated depending on the wavelength and intensity of the exciting radiation. Along with experimental studies, quantum-chemical calculations of the electronic structure and geometry of electronically excited molecules were carried out, an interpretation of the experimental data (absorption and emission bands) was given, and a connection between the absorption spectra and the structure of bis(dipyrromethenes) and their conformations was established. The analysis of the obtained results is carried out in comparison with the modern literature data. The possibilities of practical application of the studied compounds in the development of liquid and solid-state lasers and optical solvent polarity sensors are discussed. | Aksenova, Iu, V; Pomogaev, V. A.; Kuznetsova, R. T.; Antina, L. A.; Berezin, M. B. | Natl Res Tomsk State Univ, Tomsk, Russia; Kyungpook Natl Univ, Daegu, South Korea; Russian Acad Sci, GA Krestov Inst Solut Chem, Ivanovo, Russia | Pomogaev, Vladimir/E-5049-2014; Aksenova, Iuliia/E-5167-2014; Antina, Lubov/U-2080-2019; Kuznetsova, Rimma/E-5291-2014; Berezin, Mikhail/N-7584-2016 | 55242207200; 6603016010; 7006908731; 36348162800; 7006172207 | juliya1711@rambler.ru;vapom@mail.tsu.ru;kuznetrt@phys.tsu.ru;lyubov.antina@mail.ru;mbb@isc-ras.ru; | RUSSIAN PHYSICS JOURNAL | RUSS PHYS J+ | 1064-8887 | 1573-9228 | 64 | 11 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0 | 2025-06-25 | 0 | 0 | dipyrromethenes; binuclear complexes; bis(BODIPY); spectroscopy; quantum chemical calculations | BODIPY DYES; SELECTIVE DETECTION; FLUORESCENT SENSOR; OPTICAL-PROPERTIES; SINGLET OXYGEN; DERIVATIVES; EFFICIENT; STATE; DESIGN; LIQUID | binuclear complexes; bis(BODIPY); dipyrromethenes; quantum chemical calculations; spectroscopy | English | 2022 | 2022-03 | 10.1007/s11182-022-02556-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Feedforward compensation for hysteresis and dynamic behaviors of a high-speed atomic force microscope scanner | Piezoelectric actuators (PEAs) suffer from inherent creep, hysteresis, and mechanical resonances, and these phenomena have different characteristics. Creep is a low-speed phenomenon. Mechanical resonances are felt at high speeds while hysteresis is present for all speeds of operation. Some type of compensation for the weaknesses of PEAs is required to improve the tracking accuracy using PEA-based nano-positioning scanners. This work presents a feedforward compensation method for a high-speed atomic force microscope (HS-AFM) XY-scanner to mitigate the combined effects of hysteresis and scanner dynamics. Hysteresis is compensated for using an inverse Bouc-Wen (BW) model while the system dynamics are compensated for using the inverse models of the frequency response of the scanner. Cross-coupling effects at high frequencies are compensated for using low-pass filters (LPFs) to attenuate the high-frequency components of the drive signals. The compensated scanner is then used to acquire images of data tracks of a Blu-ray disk to demonstrate the efficacy of the adopted approach. The bandwidth of the scanner is limited by the choice of the LPF and the first occurrence of the scanner's mechanical resonance. | Otieno, Luke Oduor; Thi Thu Nguyen; Park, Sang Joon; Lee, Yong Joong; Alunda, Bernard Ouma | Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea; Taita Taveta Univ, Sch Mines & Engn, POB 635-80300, Voi, South Korea | Otieno, Luke/KHW-8698-2024 | 57205578290; 58811314600; 56819450700; 57183248500; 55354745500 | yjlee76@knu.ac.kr; | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | J KOREAN PHYS SOC | 0374-4884 | 1976-8524 | 80 | 4 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0.49 | 2025-06-25 | 7 | 6 | Atomic force microscope; High-speed atomic force microscope; Feedforward compensation | VIBRATION COMPENSATION; PIEZOACTUATORS; IDENTIFICATION; STAGE; CREEP | Atomic force microscope; Feedforward compensation; High-speed atomic force microscope | English | 2022 | 2022-02 | 10.1007/s40042-021-00376-9 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | LOCALIZED d-ELECTRON EFFECT ON SPIN POLARIZATION OF VERTICAL HETEROSTRUCTURES OF NANOPOROUS BILAYER GRAPHENE | The paper presents a novel composite material based on nanoporous AB-stacked bilayer graphene. The influence of the dopant atom on the electronic properties of the heterostructure and its position in the pore is investigated herein. The proposed effect is considered on composite materials doped with calcium and manganese atoms in order to correctly evaluate the influence of the valence shell filling type without the local field effect caused by the structural properties of an AB-stacked bilayer graphene. | Melchakova, Yu. A.; Avramov, P. V. | Natl Res Tomsk State Univ, Tomsk, Russia; Kyungpook Natl Univ, Daegu, South Korea | Melchakova, Iuliia/KGM-5967-2024 | 57206720228; 7004322420 | iuliia.melchakova@gmail.com;paul@iph.krasn.ru; | RUSSIAN PHYSICS JOURNAL | RUSS PHYS J+ | 1064-8887 | 1573-9228 | 65 | 7 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0 | 2025-06-25 | 0 | 0 | bilayer graphene; density functional theory; adsorption; transition metal; spin polarization | INITIO MOLECULAR-DYNAMICS | adsorption; bilayer graphene; density functional theory; spin polarization; transition metal | English | 2022 | 2022-12-22 | 10.1007/s11182-022-02742-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Stability and electronic properties of layered NaMnO2 using the SCAN( plus U) | Considering electron correlation appropriately is important to predict the properties of layered transition metal oxides, which have drawn a lot of attention as cathode materials for sodium-ion batteries. Here, we explore the phonon and electronic properties of layered NaMnO2 using the recently developed strongly constrained and appropriately normed (SCAN) functional. We also introduce the Coulomb interaction U to find an accurate description of Mn 3d orbitals. The phonon dispersion curves show the structural stability with the SCAN, which is consistent with prior experimental stability at high Na concentrations. On the other hand, imaginary phonon frequencies were observed by applying U, which indicates structural instability. Namely, SCAN properly describes the phonon properties of layered NaMnO2, whereas SCAN + U does not. We further explore the Jahn-Teller (J-T) stability and magnitude of J-T distortion depending on U and find that SCAN results are consistent with Perdew-Burke-Ernzerhof functional, PBE + U results. Our results suggest that SCAN itself properly describes the physical properties of NaMnO2 without adding U explicitly. | Jung, Haeyoon; Kim, Jiyeon; Kim, Sooran | Kyungpook Natl Univ, Dept Phys Educ, Daegu 41566, South Korea; Kyungpook Natl Univ, Ctr High Energy Phys, Daegu 41566, South Korea | 57456735900; 57456694400; 55146733200 | mygromit@gmail.com;sooran@knu.ac.kr; | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | J KOREAN PHYS SOC | 0374-4884 | 1976-8524 | 81 | 10 | SCIE | PHYSICS, MULTIDISCIPLINARY | 2022 | 0.6 | 91.2 | 0 | 2025-06-25 | 0 | 0 | Sodium-ion battery; NaMnO2; SCAN functional; Jahn-Teller distortion; Phonon; First-principles calculations | TOTAL-ENERGY CALCULATIONS; SODIUM-ION; CHALLENGES; CATHODES; OXIDE; MN; NI | First-principles calculations; Jahn–Teller distortion; NaMnO<sub>2</sub>; Phonon; SCAN functional; Sodium-ion battery | English | 2022 | 2022-11 | 10.1007/s40042-022-00617-5 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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