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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
Article Virtual Planning and Rapid 3D Prototyping Surgical Guide for Anterior Crown Lengthening Surgery: A Clinical Case Report Progress with additive 3D printing is revolutionizing biomaterial manufacturing, including clinical dentistry and prosthodontics. Among the several 3D additive printing technologies, stereolithography is very popular as it utilizes light-activated resin for precise resolution. A simplified digital technique was used to fabricate two designs of a surgical guide for crown lengthening. Two cases are presented that utilized digital imaging and communications in medicine (DICOM) files obtained with computed tomography (CT) imaging and processed using four CAD software (Blue Sky Plan, Exocad, Meshmixer and 3D Slicer). The final models were converted to standard tessellation (STL) files and the guides were 3D printed with an additive stereolithography (SLA) printer. The first case was fabricated with a bone model from cone beam computed tomography (CBCT) data, and the second case was generated with intraoral and wax-up scans alone. Both methods appear to be equally effective compared to using a conventional method of guide frabication. However, proximal bone reduction was a concern with both designs. Digitally fabricated 3D printed surgical guide for crown lengthening has merit and a practical design is needed for future clinical validation. Kim, Jaewon; Lin, Yu-Chun; Danielak, Michael; Van, Minh; Lee, Du-Hyeong; Kim, Hyeongil; Arany, Praveen R. Univ Buffalo, Sch Dent Med, Dept Oral Biol, Buffalo, NY USA; Univ Buffalo, Sch Dent Med, Dept Prosthodont, Buffalo, NY USA; Kyungpook Natl Univ, Dept Prosthodont, Sch Dent, Daegu, South Korea; Univ Buffalo, Sch Dent Med, Dept Periodont & Endodont, Buffalo, NY USA; Univ Buffalo, Sch Med, Dept Surg, Buffalo, NY USA; Univ Buffalo, Sch Med, Dept Biomed Engn, Buffalo, NY USA; Univ Buffalo, Sch Engn & Appl Sci, Dept Surg, Buffalo, NY USA; Univ Buffalo, Sch Engn & Appl Sci, Dept Biomed Engn, Buffalo, NY USA ; Arany, Praveen/S-5329-2019 57207915082; 57397972600; 57397602800; 57398352400; 35770948000; 21734572900; 23003393200 prarany@buffalo.edu; JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY J PROSTHODONT 1059-941X 1532-849X 31 4 SCIE DENTISTRY, ORAL SURGERY & MEDICINE 2022 4 18.1 1.12 2025-06-25 7 7 3D Printing; digital crown lengthening; stereolithography; surgical guide DIGITAL WORKFLOW; PROSTHODONTICS; ACCURACY 3D Printing; digital crown lengthening; stereolithography; surgical guide Computer-Aided Design; Crown Lengthening; Dental Implants; Humans; Printing, Three-Dimensional; Stereolithography; case report; computer aided design; crown lengthening; human; stereolithography; three dimensional printing; tooth implant English 2022 2022-04 10.1111/jopr.13471 바로가기 바로가기 바로가기 바로가기
Article Oxidation-Resistant Amorphous Zinc Tin Nitride Films with Tunable Optical and Electrical Properties Zinc tin nitride (ZTN) compounds exhibit excellent optical and defect-tolerance properties desirable for optoelectronic applications. However, the synthesis of high-phase-purity ZTN is limited by oxidation. We report the synthesis of amorphous ZTN films with excellent oxidation resistance for a wide range of compositions (from pure Zn3N2 to ZTN with Sn/(Sn + Zn) up to 66.9%). We employ modified pulsed plasma-enhanced chemical vapor deposition with alternating pulses of zinc and tin precursors. We observe a correlation between oxidation resistance and pulse duration of the Zn precursor. Furthermore, extensive structural, chemical, electrical, and optical characterizations are discussed for amorphous ZTN with varying Sn/Zn. Electron microscopy reveals a mixture of nanoscale domains with Zn-rich and Sn-rich phases in the synthesized films. Interestingly, the trends of the electrical and optical properties vs the Sn content of amorphous ZTN are similar to reported crystalline ZTN. Notably, amorphous ZTN of Sn/(Zn + Sn) similar to 0.3 exhibited a carrier concentration of 5.3 x 1013 cm(-3), the lowest among those reported for ZTN of any composition, making it very promising for photovoltaic applications. Our study presents a new class of compounds with materials properties that are unaccessible by the conventional crystalline nitrides, which will be useful for future optoelectronic applications. Choi, Ji Woon; Kim, Jekyung; Pae, Seong Ryul; Kim, Joonyun; Kim, Chang Gyun; Lee, Hojin; Ji, Seunghwan; Nam, Sung-Wook; Lee, Young Kuk; Shin, Byungha Korea Res Inst Chem Technol, Div Adv Mat, Daejeon 305-600, South Korea; Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon 34141, South Korea; Kyungpook Natl Univ, Sch Med, Daegu 41405, South Korea Nam, Sung-Wook/V-5519-2019; Kim, Joonyun/MXL-9022-2025; Shin, Byungha/E-8602-2014 57210450611; 57193218380; 57191192653; 57208390545; 57855518400; 57192500386; 57225183272; 16167127700; 36067081700; 8910734900 leeyoung@krict.re.kr;byungha@kaist.ac.kr; CHEMISTRY OF MATERIALS CHEM MATER 0897-4756 1520-5002 34 15 SCIE CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY 2022 8.6 18.2 0.23 2025-06-25 4 3 ZNSNN2; SEMICONDUCTORS Carrier concentration; Nitrides; Oxidation resistance; Plasma CVD; Plasma enhanced chemical vapor deposition; Tin compounds; Zinc compounds; Defect tolerance; High phase purity; Optical and electrical properties; Optical tolerances; Optoelectronic applications; Oxidation resistant; Property; Tin nitride; Tin nitride films; Tunables; Optical properties English 2022 2022-08-09 10.1021/acs.chemmater.2c00940 바로가기 바로가기 바로가기 바로가기
Article User-demand fast-curable ocular glues enforced by multilength tunable networks Achieving fast and secure wound closure without ocular foreign body sensation is highly desired in ophthalmologic surgery. Sutureless approaches using tissue adhesives are gaining popularity, but their practical use is limited by the difficulty in controlling adhesion time and satisfying safety standards without compromising adhesive performance. Herein, we report user-demand hydrogel-forming ocular glues based on multilength photo-crosslinkable hyaluronic acid (HA), achieving firm tissue adhesion under wet and dynamic conditions and possessing cornea-like optical transparency. The HA-based photocurable glue (HA photoglue) quickly seals wounds upon nontoxic low-energy light exposure (320-500 nm, < 5 s, < 1 J cm(-2)), and its mechanical and adhesive properties are improved by introducing short and long crosslinkable moieties into HA through one-step synthesis, forming multilength networks. Furthermore, the HA photoglue provides stable sealing in wet environments like ocular mucous surface, a clear vision with a light transmittance of more than 95% over the entire visible range, and a lubricating surface with minimal ocular sensation (generating less than 10% frictional force than suture groups). In a rabbit corneal incision model, the HA photoglue showed improved wound healing efficacy based on histological evaluation compared to control groups. Lee, Hyeseon; Chandrasekharan, Ajeesh; Seong, Keum-Yong; Jo, Yeon Ji; Park, Samdae; An, Seonyeong; Lee, Seungsoo; Kim, Hyeji; Ahn, Hyungju; Seo, Sungbaek; Lee, Jong Soo; Yang, Seung Yun Pusan Natl Univ, Life & Ind Convergence Inst, BK21 Program 4, Dept Biomat Sci, Miryang 50463, South Korea; Pusan Natl Univ, Coll Med, Dept Ophthalmol, Busan 49241, South Korea; Pusan Natl Univ Hosp, Med Res Inst, Busan 49241, South Korea; Pusan Natl Univ, SNvia Co Ltd, Hyowon Ind Cooperat Bldg, Busan, South Korea; Kyungpook Natl Univ, Dept Polymer Sci & Engn, Daegu, South Korea; POSTECH, Pohang Accelerator Lab, Ind Technol Convergence Ctr, Pohang, South Korea ; Chandrasekharan, Ajeesh/AAX-7946-2021; Yang, Seung/B-5974-2016 57211576277; 57205031602; 56473397700; 57212574529; 57209174606; 57302777600; 57475731600; 57214326896; 56452216500; 55189636300; 57219085131; 57571328800 jongsool@pusan.ac.kr;syang@pusan.ac.kr; BIOENGINEERING & TRANSLATIONAL MEDICINE BIOENG TRANSL MED 2380-6761 7 3 SCIE ENGINEERING, BIOMEDICAL 2022 7.4 18.2 0.45 2025-06-25 6 5 hyaluronic acid; hydrogel; ocular glue; photo-crosslinking; tissue adhesive HYALURONIC-ACID; WOUND CLOSURE; MECHANICAL-PROPERTIES; ADHESIVES; CHEMISTRY; HYDROGELS; POLYMER hyaluronic acid; hydrogel; ocular glue; photo-crosslinking; tissue adhesive Adhesion; Gluing; Hyaluronic acid; Hydrogels; Organic acids; Tissue; fluorescein; glue; hyaluronic acid; hydrogel; ocular glue; unclassified drug; Cross-linkable; Ocular foreign bodies; Ocular glue; Photo-cross-linkings; Practical use; Safety standard; Tissue adhesives; Tunables; User demands; Wound closure; animal experiment; animal tissue; Article; blood rheology; cell viability; cell viability assay; controlled study; cross linking; cytotoxicity; histology; histopathology; inflammation; inflammatory cell; macrophage; nonhuman; photo crosslinking; polymorphonuclear cell; proton nuclear magnetic resonance; refraction index; scanning electron microscopy; tissue adhesion; viscosity; visual acuity; wound closure; wound healing; X ray crystallography; Glues English 2022 2022-09 10.1002/btm2.10323 바로가기 바로가기 바로가기 바로가기
Meeting Abstract Hypoxia-inducible factor 2α is a negative regulator of chondrocyte maturation Che, Xiangguo; Park, Na-Rae; Jin, Xian; Lee, Dong-Kyo; Choi, Poo-Reum; Kim, Hyun-Ju; Park, Clara; Kim, Seong-Gon; Chun, Jang-Soo; Lian, Jane B.; Stein, Janet L.; Stein, Gary S.; Choi, Je-Yong Kyungpook Natl Univ, Cell & Matrix Res Inst, Korea Mouse Phenotyping Ctr, Dept Biochem & Cell Biol,Sch Med, Daegu, South Korea; Chonnam Natl Univ, Gwangju, South Korea; Gwangju Inst Sci & Technol, Sch Life Sci, Cell Dynam Res Ctr, Gwangju, South Korea; Univ Vermont, Coll Med, Dept Biochem, Burlington, VT 05405 USA; Univ Vermont, Canc Ctr, Burlington, VT 05405 USA Kim, Sung-Soo/ABD-3771-2021; Choi, Je-Yong/AAR-7334-2021 JOURNAL OF BONE AND MINERAL RESEARCH J BONE MINER RES 0884-0431 1523-4681 37 SCIE ENDOCRINOLOGY & METABOLISM 2022 6.2 18.3 0 English 2022 2022-02 바로가기 바로가기
Article Myeloid-Specific PTP1B Deficiency Attenuates Inflammation-Induced and Ovariectomy-Induced Bone Loss in Mice by Inhibiting Osteoclastogenesis The differentiation and activity of bone-resorbing osteoclasts are tightly regulated to maintain the homeostasis of healthy bones. In this study, the role of protein tyrosine phosphatase 1B (PTP1B) during osteoclastogenesis was studied in myeloid-specific Ptpn1-deficient (conditional knockout [cKO]) mice. The mRNA and protein expression of PTP1B increased during the formation of mature osteoclasts from mouse bone macrophages on stimulation with macrophage-colony stimulating factor (M-CSF) and receptor activator of nuclear factor kappa B ligand (RANKL). The Ptpn1 cKO mice exhibited increased femoral trabecular bone volume with a decreased number and activity of osteoclasts compared with control mice. The in vitro culture of osteoclast precursors corroborated the inhibition of osteoclastogenesis in cKO cells compared with control, with concomitantly decreased RANKL-dependent proliferation, lower osteoclast marker gene expression, reduced nuclear expression of nuclear factor of activated T cells cytoplasmic 1 (NFATc1), diminished intracellular Ca2+ oscillations, and increased phosphorylation of proto-oncogene tyrosine-protein kinase Src on inhibitory tyrosine residue. In a ligature-induced periodontitis model, Ptpn1 cKO mice exhibited attenuated osteoclastogenesis and alveolar bone loss following the induction of inflammation. The Ptpn1-deficient mice were similarly protected from ovariectomy-induced bone loss compared with control mice. These results provide a novel regulatory role of PTP1B in osteoclastogenesis and suggest a potential as a therapeutic target for bone-lytic diseases. (c) 2021 American Society for Bone and Mineral Research (ASBMR). Kim, Hyo Jeong; Ryu, Ka-Young; Kim, Yong-Gun; Kim, Myoung Ok; Lee, Ji Hye; Song, Min-Kyoung; Youn, Young-Jin; Pohkrel, Nitin Kumar; Kim, Sung-Hyun; Kim, Jae-Young; Jung, Hye-Jin; Kim, Woo-Shin; Hong, Chang-Won; Kim, Hong-Hee; Lee, Youngkyun Kyungpook Natl Univ, Sch Dent, Dept Biochem, Daegu, South Korea; Kyungpook Natl Univ, Sch Dent, Inst Hard Tissue & Bone Regenerat, Daegu, South Korea; Kyungpook Natl Univ, Sch Dent, Dept Periodontol, Daegu, South Korea; Kyungpook Natl Univ, Coll Ecol & Environm Sci, Dept Anim Biotechnol, Sangju, South Korea; Pusan Natl Univ, Sch Dent, Dept Oral Pathol, Yangsan, South Korea; Seoul Natl Univ, Sch Dent, Dept Cell & Dev Biol, Seoul, South Korea; Seoul Natl Univ, Dent Res Inst, Dept Cell & Dev Biol, Seoul, South Korea; Kyungpook Natl Univ, Sch Med, Dept Physiol, Daegu, South Korea; Korea Polytech Coll, Dept Biomed Anal, Chungnam, South Korea Youn, Young Jin/KQU-0973-2024; Kim, Jae-hyung/J-8504-2012; Kim, Ji-Youn/A-5779-2017 57203629899; 57394631700; 55622694400; 8934745900; 55689992200; 57190391360; 57195676656; 57193827745; 59103241900; 56812734700; 57394721600; 55272203700; 55567018400; 55766537400; 36062942200 hhbkim@snu.ac.kr;ylee@knu.ac.kr; JOURNAL OF BONE AND MINERAL RESEARCH J BONE MINER RES 0884-0431 1523-4681 37 3 SCIE ENDOCRINOLOGY & METABOLISM 2022 6.2 18.3 0.53 2025-06-25 4 4 OSTEOCLAST; PTP1B; DIFFERENTIATION; BONE RESORPTION; PERIODONTITIS; OVARIECTOMY PROTEIN-TYROSINE-PHOSPHATASE; 1B; MECHANISMS; DIFFERENTIATION; IDENTIFICATION; EXPRESSION; OBESITY; LACKING; TARGET; SRC BONE RESORPTION; DIFFERENTIATION; OSTEOCLAST; OVARIECTOMY; PERIODONTITIS; PTP1B Animals; Bone Resorption; Cell Differentiation; Female; Humans; Inflammation; Mice; Mice, Inbred C57BL; NFATC Transcription Factors; Osteoclasts; Osteogenesis; Ovariectomy; Phosphoric Monoester Hydrolases; RANK Ligand; Tyrosine; colony stimulating factor 1; messenger RNA; osteoclast differentiation factor; protein kinase p60; protein tyrosine phosphatase; protein tyrosine phosphatase 1B; transcription factor NFAT; osteoclast differentiation factor; phosphatase; transcription factor NFAT; tyrosine; alveolar bone loss; animal cell; animal experiment; animal model; Article; bone volume; calcium homeostasis; cell proliferation; computer assisted tomography; controlled study; gene expression; in vitro study; in vivo study; macrophage; male; marker gene; mouse; mRNA expression level; nonhuman; osteoclast; osteoclastogenesis; ovariectomy-induced osteoporosis; protein expression; protein phosphorylation; trabecular bone; animal; bone development; C57BL mouse; cell differentiation; female; human; inflammation; metabolism; osteolysis; ovariectomy English 2022 2022-03 10.1002/jbmr.4478 바로가기 바로가기 바로가기 바로가기
Article Predictive modeling of microhole profile drilled using a focused electron beam with backing materials This study establishes a simple and rapid predictive model for a microhole profile drilled using a focused electron beam based on the finite difference method. Vertical irradiation and full penetration using a focused beam with a Gaussian distribution were reflected onto the three-dimensional mesh of metallic substrates. The predictive hole profiles on the substrate were estimated by analyzing the phase transition using predictive temperature distributions. To validate the predictive accuracy of model, experimental drilling processes on AISI 304 stainless steel substrates were conducted, and the experimental hole qualities were measured using microcomputed tomography. Comparisons between predictive and experimental results represented high predictive accuracy in three criteria: hole diameters, straightness, and geometrical hole shape. Applying the fractional energy absorptance dependent on the substrate depth significantly improved the prediction accuracy of model. The predictive results demonstrated that the thermal analysis with temperature distributions could predict the drilled hole qualities rapidly and accurately, avoiding the high computational loads from considerations for velocity fields or pressure distributions around the substrate. Park, Hyunmin; Kang, Joon Goo; Kim, Jin Seok; Kang, Eun Goo; Choi, Seung-Kyum; Kim, Jisoo; Park, Hyung Wook Ulsan Natl Inst Sci & Technol, Dept Mech Engn, 50 UNIST Gil, Ulsan 44919, South Korea; Korea Inst Ind Technol, Digital Transformat R&D Dept, 143 Hanggaulro, Ansan 15588, Gyeonggi Do, South Korea; Georgia Inst Technol, George W Woodruff Sch Mech Engn, North Ave, Atlanta, GA 30332 USA; Kyungpook Natl Univ, Dept Precis Mech Engn, 2559 Gyeongsang Daero, Sangju 37224, Gyeongsangbuk D, South Korea; Kyungpook Natl Univ, Dept Adv Sci & Technol Convergence, 2559 Gyeongsang Daero, Sangju 37224, Gyeongsangbuk D, South Korea Choi, Seung-Kyum/A-5914-2010; KIM, JI/U-1902-2018; Park, Hyung Wook/E-9102-2010 57491790600; 57222521734; 55545861453; 56271081500; 24074141400; 57192647685; 55537550000 js.kim@knu.ac.kr;hwpark@unist.ac.kr; INTERNATIONAL JOURNAL OF THERMAL SCIENCES INT J THERM SCI 1290-0729 1778-4166 177 SCIE ENGINEERING, MECHANICAL;THERMODYNAMICS 2022 4.5 18.3 0.2 2025-06-25 2 2 Electron beam drilling; High aspect ratio; Predictive model; Finite difference method; Depth-dependent electron beam absorptance EVAPORATED METAL-FILMS; MULTIPLE-SCATTERING; HOLE QUALITY; OPTIMIZATION; IRRADIATION Depth-dependent electron beam absorptance; Electron beam drilling; Finite difference method; High aspect ratio; Predictive model Aspect ratio; Electrons; Finite difference method; Gaussian beams; Infill drilling; Substrates; Temperature distribution; Thermoanalysis; Velocity; Absorptance; Depth dependents; Depth-dependent electron beam absorptance; Electron beam drilling; Electron-beam; Finite-difference methods; High aspect ratio; Micro holes; Predictive models; Electron beams English 2022 2022-07 10.1016/j.ijthermalsci.2022.107584 바로가기 바로가기 바로가기 바로가기
Article Time splitting ratio in the ?8-Bathe time integration method for higher-order accuracy in structural dynamics and heat transfer Our objective in this paper is to investigate the use of the splitting ratio, y, in the p(infinity)-Bathe method to reach a higher-order accuracy in the finite element solutions of structural dynamics and heat transfer problems. We study the order of accuracy of the method for both types of analyses, and identify a p ( )real-valued y(p) resulting into third-order accuracy with p(infinity) = (-1, 1 -root 3] and a complex-valued y(i )with p(infinity) is an element of [0,11 providing at least third-order accuracy but y(i )with p(infinity )= 1 gives fourth-order accuracy. In both types of analyses, structural and heat transfer solutions, the y values result into the same orders of convergence. To illustrate our theoretical findings, we give the results of some example solutions of structural dynamics and heat flow problems. These solutions show that more accurate response predictions can be obtained when using the more effective y values. (C) 2022 Elsevier Ltd. All rights reserved. Choi, Bokyu; Bathe, Klaus-Jurgen; Noh, Gunwoo Kyungpook Natl Univ, Daegu 41566, South Korea; MIT, Cambridge, MA 02139 USA; Korea Univ, Seoul 02841, South Korea 57753064300; 7006653504; 55010264000 gunwoonoh@korea.ac.kr; COMPUTERS & STRUCTURES COMPUT STRUCT 0045-7949 1879-2243 270 SCIE COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS;ENGINEERING, CIVIL 2022 4.7 18.3 1.78 2025-06-25 21 21 Direct time integrations; Implicit schemes; Bathe method; Order of accuracy; Structural dynamics; Heat transfer IMPROVED NUMERICAL DISSIPATION; NONLINEAR DYNAMICS; ALGORITHMS; SCHEME; ENERGY Bathe method; Direct time integrations; Heat transfer; Implicit schemes; Order of accuracy; Structural dynamics Dynamics; Structural dynamics; Bathe methods; Direct time integration; Finite element solution; Higher order accuracy; Implicit schemes; Order of accuracy; Splitting ratio; Third order accuracy; Time integration methods; Time splitting; Heat transfer English 2022 2022-10-01 10.1016/j.compstruc.2022.106814 바로가기 바로가기 바로가기 바로가기
Article Thermomechanical stability of Bi2Te3-based thermoelectric modules employing variant diffusion barriers An electroless nickel (EN) layer and EN, along with electroless palladium (EP), and immersion gold (IG) (ENEPIG) multilayers were two variant diffusion barriers employed for Bi2Te3-based thermoelectric materials. After the electroless plating process, coated Bi2Te3-based species were bonded with Cu electrodes using a soldering method with Sn-based alloy as a solder. Heat treatment was conducted at 200 degrees C for 200, 500, and 1000 h to investigate the thermomechanical stability of the Bi2Te3/solder interface adopting different coatings. First, the Bi2Te3/solder interface characteristics were analyzed by compositional identification and morphology observation. Intermetallic compounds (IMCs) were generated below the plating area in both EN and ENEPIG. The phase composition of these IMCs was identified by qualitative analysis. Additionally, the thickness of IMCs with ENEPIG was larger than those with EN regardless of annealing duration. The IMC morphology without and with 200 h of heating showed columnar grains, while those with heating over 500 h exhibited equiaxed grains. The ENEPIG coating generally yielded a higher bonding strength for the Bi2Te3/solder interface than the EN layer. Meanwhile, the bonding strength for EN and ENEPIG was constant after 200 h of heating, followed by a significant drop at 500 h, and it finally leveled off after heating for 1000 h. Furthermore, the fracture caused by the shear test was characterized by the brittle fracture mode. Ultimately, the IMC morphology was found to influence the bonding strength along with the increase in annealing duration rather than IMC thickness and composition. Nguyen, Yen Ngoc; Son, Injoon Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea Nguyen, Yen/CAJ-4943-2022 57197767959; 9942975800 ijson@knu.ac.kr; INTERMETALLICS INTERMETALLICS 0966-9795 1879-0216 140 SCIE CHEMISTRY, PHYSICAL;MATERIALS SCIENCE, MULTIDISCIPLINARY;METALLURGY & METALLURGICAL ENGINEERING 2022 4.4 18.4 0.91 2025-06-25 9 11 Intermetallics; Thermal stability; Surface finishing; Deposition; Interfaces; Thermoelectric power generation OPTIMAL NI(P) THICKNESS; INTERFACIAL REACTIONS; PROPERTIES EVOLUTION; GROWTH-BEHAVIOR; SAC305 SOLDER; SN; CU; NI; COMPOUND; STRENGTH Deposition; Interfaces; Intermetallics; Surface finishing; Thermal stability; Thermoelectric power generation Bismuth alloys; Bismuth compounds; Diffusion bonding; Diffusion coatings; Electroless plating; Heating; Morphology; Textures; Tin alloys; Bonding strength; Electroless; Electroless nickel; Electroless nickel layer; Intermetallics compounds; Solder interfaces; Surface finishing; Thermo-Electric materials; Thermo-electric modules; Thermomechanical stability; Intermetallics English 2022 2022-01 10.1016/j.intermet.2021.107404 바로가기 바로가기 바로가기 바로가기
Article Electrocatalytic determination of hydrazine concentrations with polyelectrolyte supported AuCo nanoparticles on carbon electrodes Gold-cobalt alloy nanoparticles (AuCo NPs) deposited on a screen-printed carbon electrode (SPCE) surface modified with a combination of polystyrene sulfonate (PSS) and poly-3,4-ethylenedioxythiophene (PEDOT) is demonstrated for monitoring the direct oxidation of hydrazine. The surface morphology and properties of PSS: PEDOT supported AuCo NPs modified carbon electrodes were characterized using field-emission scanning electron microscopy, X-ray diffraction, and energy dispersive spectroscopic analysis. The current change with respect to the electrocatalytic oxidation of hydrazine on AuCo NPs/PSS:PEDOT/SPCE was used for the quanti-tative analysis in conjunction with cyclic, linear sweep, and differential pulse voltammetries alongside chro-noamperometry (CA). The voltammetric response for the oxidation of hydrazine using AuCo NPs/PSS:PEDOT/ SPCE was also compared with those of bare SPCE and PSS:PEDOT/SPCE. Under optimum conditions using CA, the modified electrode offered a linear range from 0.5 to 1000 mu M, a sensitivity of 1.64 mu A mu M-1 and a limit of detection of 0.17 mu M. The stability, reproducibility, sensitivity, and selectivity were also investigated. Finally, the AuCo NPs/PSS:PEDOT/SPCE platform was employed to determine native hydrazine concentrations in local river water samples. Nde, Dieudonne Tanue; Jhung, Sung Hwa; Lee, Hye Jin Kyungpook Natl Univ, Dept Chem, 80 Daehakro, Daegu City 41566, South Korea; Kyungpook Natl Univ, Green Nano Mat Res Ctr, 80 Daehakro, Daegu City 41566, South Korea LEE, HYEJIN/W-1345-2018; Jhung, Sung/AAO-6683-2021 57240825500; 6701659467; 56569175200 hyejinlee@knu.ac.kr; CATALYSIS TODAY CATAL TODAY 0920-5861 1873-4308 403 SCIE CHEMISTRY, APPLIED;CHEMISTRY, PHYSICAL;ENGINEERING, CHEMICAL 2022 5.3 18.5 0.33 2025-06-25 6 6 Hydrazine; Electrocatalytic analysis; Amperometry; AuCo nanoparticles; Polyelectrolytes; River water analysis ELECTROCHEMICAL SENSORS; OXIDATION; NANOCOMPOSITE; POLYANILINE; PEDOT; NI; FABRICATION; CATALYSTS; DOPAMINE; OXIDE Amperometry; AuCo nanoparticles; Electrocatalytic analysis; Hydrazine; Polyelectrolytes; River water analysis Carbon; Chronoamperometry; Electrocatalysis; Electrodes; Field emission microscopes; Gold alloys; Gold deposits; Hydrazine; Morphology; Nanoparticles; Oxidation; Polyelectrolytes; Scanning electron microscopy; Spectroscopic analysis; Surface morphology; Amperometry; Auco nanoparticle; Carbon electrode; Electrocatalytic; Electrocatalytic analyse; Ethylenedioxythiophenes; Hydrazine concentration; Poly(styrene sulfonate); River water analysis; Screen-printed carbon electrodes; Binary alloys English 2022 2022-11-01 10.1016/j.cattod.2022.03.016 바로가기 바로가기 바로가기 바로가기
Article Selective hydrogenation of cinnamaldehyde to cinnamyl alcohol over palladium/zirconia in microwave protocol Hydrogenation of aldehydes (RHO) is one of the frequently used reactions in organic synthesis and pharmaceuticals industries. In this contribution, we have synthesized control shaped and nano-sized tetragonal zirconia (t-ZrO2), palladium supported on zirconia (Pd/t-ZrO2) and nickel promoted palladium supported on zirconia (NiPd/t-ZrO2) though modified microwave irradiation method. All the prepared samples were characterized by Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffractometry (XRD), Thermal Gravimetric Analysis (TGA), Brunauer-Emmett-Teller (BET) surface area and pore size analysis, and Fourier Transform Infrared Spectroscopy (FT-IR). Theoretical calculation (DFT) revealed high interaction of Pd with t-ZrO2(101) surface. Furthermore, adsorption energy, support relaxation and charge transfer studies confirmed the stability of Pd on t-ZrO2(101) surface. The catalytic activity of catalysts was tested for cinnamaldehyde (CAL) hydrogenation in a modified microwave reactor. The comparative study of microwave irradiated (MW) and conventional heating (C-Heating) systems show supremacy of MW over C-Heating by a factor of 46% under optimal reaction parameters for Pd/t-ZrO2 catalyst. The stability, life span, conversion and selectivity of Pd/t-ZrO2 under MW system suggest the applicability of the catalysts for a variety of organic hydrogenation reactions. Iqbal, Zaffar; Sadiq, Muhammad; Sadiq, Saima; Saeed, Khalid Bacha Khan Univ, Dept Chem, Charsadda 24420, Pakistan; Univ Malakand, Dept Chem, Chakdara 18800, Pakistan; Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea ; Saeed, Khalid/MVZ-2063-2025; Sadiq, Saima/JAN-6421-2023; Sadiq, Muhammad/ABG-5017-2020 57212328466; 14627798100; 59029170800; 56875271500 sadiq@uom.edu.pk; CATALYSIS TODAY CATAL TODAY 0920-5861 1873-4308 397 SCIE CHEMISTRY, APPLIED;CHEMISTRY, PHYSICAL;ENGINEERING, CHEMICAL 2022 5.3 18.5 0.44 2025-06-25 11 8 Microwave; DFT; Hydrogenation; Cinnamaldehyde CATALYSTS; PD; NANOPARTICLES; OXIDATION; SITES; GREEN; OXIDE; ZRO2 Cinnamaldehyde; DFT; Hydrogenation; Microwave Catalyst activity; Catalyst selectivity; Charge transfer; Energy dispersive spectroscopy; Fourier transform infrared spectroscopy; High resolution transmission electron microscopy; Microwave irradiation; Palladium; Pore size; Scanning electron microscopy; Thermogravimetric analysis; X ray diffraction analysis; Zirconia; Cinnamaldehyde; Cinnamyl alcohols; Conventional heating; DFT; Organic synthesis; Pharmaceutical industry; Selective hydrogenation; Synthesised; ZrO$-2$; ]+ catalyst; Hydrogenation English 2022 2022-08-01 10.1016/j.cattod.2021.08.010 바로가기 바로가기 바로가기 바로가기
Article A numerical simulation of a strong windstorm event in the Taebaek Mountain Region in Korea during the ICE-POP 2018 During the International Collaborative Experiments for the Pyeongchang 2018 Olympic and Paralympic winter games (ICE-POP 2018), a strong windstorm occurred on the lee side of the Taebaek Mountains on 14 February 2018, when a low-pressure system passed through the northern part of the Korean Peninsula. At that time, a prevailing westerly wind with warm advection and an inversion layer at the top of the mountains provided favorable conditions for the downslope windstorm, resulting in structural damage at the Olympic Park. This led to the delay and cancellation of the ski jump and biathlon games. To investigate the generation mechanism responsible for the downslope windstorm during the ICE-POP 2018, we performed a numerical simulation using the Weather and Research Forecast model with the finest horizontal grid spacing of 333 m. The model effectively reproduced the multi-scale flows, such as the synoptic-scale low-pressure system, upstream sounding, and downslope winds, with slightly overestimated surface winds at some local sites on the lee side. Analysis of vertical cross-sections across the mountains showed a steep descent of potential temperature on the lee slope and a rapid recovery on the leeward side, showing the evidence of hydraulic jump with a Froude number of 0.9. During the windstorm event, mountain waves were generated with horizontal wavelengths that varied with time due to the change in background wind and stability along with movement of the low-pressure system. Using the dispersion relationship for internal gravity waves, the Scorer parameter for quasi-stationary mountain waves showed that the waves with horizontal wavelengths smaller than 10 km were trapped below the altitudes of 6-9 km. There were no signals of mountain wave breaking and wind reversal with height (wave-induced critical level), implying that the downslope windstorm event was generated by the mechanisms of hydraulic jump and partial reflection. Strengthened jet streams in the upstream and inversion layers at the top and gap winds in the valleys of the mountains also facilitated the downslope winds on the lee side. Park, Ja-Rin; Kim, Jung-Hoon; Shin, Yewon; Kim, Soo-Hyun; Chun, Hye-Yeong; Jang, Wook; Tsai, Chia-Lun; Lee, Gyuwon Korea Inst Atmospher Predict Syst, Seoul, South Korea; Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea; Yonsei Univ, Dept Atmospher Sci, Seoul, South Korea; Korea Meteorol Inst, Seoul, South Korea; Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Ctr Atmospher REmote Sensing CARE, Daegu, South Korea Tsai, Chia-Lun/AHI-4361-2022; Kim, Jung-Hoon/AEK-6080-2022; Chun, Hye-Yeong/AAA-6249-2019; Kim, Soo-Hyun/D-1577-2019 59873506500; 56813053700; 57553928300; 57555816200; 7202216319; 59777565400; 55474132500; 7404852271 jhkim99@snu.ac.kr; ATMOSPHERIC RESEARCH ATMOS RES 0169-8095 1873-2895 272 SCIE METEOROLOGY & ATMOSPHERIC SCIENCES 2022 5.5 18.6 0.68 2025-06-25 4 7 Downslope windstorm; Inversion layer; Hydraulic jump; Mountain wave; WRF model SEVERE DOWNSLOPE WINDSTORMS; COMPLEX TOPOGRAPHY; GAP FLOW; WRF-ARW; PART I; WIND; TURBULENCE; MODEL; PARAMETERIZATION; DYNAMICS Downslope windstorm; Hydraulic jump; Inversion layer; Mountain wave; WRF model North Kyongsang; South Korea; Taebaeksan; Hydraulic jump; Ice; Numerical models; Weather forecasting; Wind; Downslope winds; Downslope windstorm; Favorable conditions; Low pressure systems; Mountain regions; Mountain wave; Olympics; Warm advection; Westerly winds; WRF Model; hydraulics; inversion layer; lee wave; numerical model; Olympic Games; storm; wind; Landforms English 2022 2022-07 10.1016/j.atmosres.2022.106158 바로가기 바로가기 바로가기 바로가기
Article Comparing 3DVAR and hybrid radar data assimilation methods for heavy rain forecast Radar data are assimilated into numerical prediction models to improve precipitation forecasts using three-dimensional (3D) variational (VAR) and hybrid data assimilation (DA) methods. The effect of radar DA (RDA) and prediction accuracy according to DA methods are evaluated by conducting experiments of three heavy rainfall events and analyzing the spatial pattern of accumulated precipitation, profiles of hydrometeors, and cloud microphysical processes. Increments of the initial analysis revealed that the hybrid method simulated the convective band, wind convergence in front of the cold front and a higher amount of water vapor mixing ratio compared to 3DVAR. Based on numerical experiments, the root mean square error of the total cumulative precipitation in 3DVAR was 9.68 mm lower than that of the no-RDA experiment (CTRL), whereas that of the Hybrid was 11.12 mm lower than that of CTRL. RDA improved precipitation forecasts, and Hybrid showed better precipitation forecast accuracy than 3DVAR. Although RDA indirectly changed the water vapor, rain, snow, and graupel mixing ratios, the change in the water vapor amount was the major factor affecting microphysical processes. The increase (decrease) in the water vapor mixing ratio had the greatest impact on precipitation formation (dissipation), whereas the effect of snow, rain, and graupel mixing ratios was relatively small. The results indicate that it is critical to create an environment in which water vapor can transform into precipitating hydrometeors and the hydrometeors can grow through cloud microphysical processes. The accuracy of heavy rain forecast can be improved by hybrid DA method, which can consider the model error in real time, making it more adaptable to the day-to-day changing weather conditions. Lee, Ji-Won; Min, Ki-Hong; Lim, Kyo-Sun Sunny Kyungpook Natl Univ, Dept Atmospher Sci, Daegu, South Korea; Kyungpook Natl Univ, Ctr Atmospher Remote Sensing, Daegu, South Korea Lim, Kyo-Sun/I-3811-2012; Lee, Joo/C-3851-2013 55780416700; 37089364100; 57211926026 kmin@knu.ac.kr; ATMOSPHERIC RESEARCH ATMOS RES 0169-8095 1873-2895 270 SCIE METEOROLOGY & ATMOSPHERIC SCIENCES 2022 5.5 18.6 0.68 2025-06-25 9 7 Radar data assimilation; Three-dimensional variational data assimilation; Hybrid data assimilation; Cloud microphysics process CONVECTIVE-SCALE; WEATHER RESEARCH; SYSTEM; WRF; SCHEME; MODEL; IMPLEMENTATION; PRECIPITATION; REFLECTIVITY; PREDICTION Cloud microphysics process; Hybrid data assimilation; Radar data assimilation; Three-dimensional variational data assimilation Clouds; Mean square error; Mixing; Numerical methods; Radar; Rain; Snow; Water vapor; Cloud microphysic process; Cloud microphysics; Data assimilation; Data assimilation methods; Hybrid data assimilation; Hybrid datum; Precipitation forecast; Radar data assimilation; Three-dimensional variational data-assimilation; Water vapour; cloud microphysics; comparative study; data acquisition; hydrometeorology; precipitation intensity; radar; spatial analysis; three-dimensional modeling; variance analysis; water vapor; weather forecasting; Weather forecasting English 2022 2022-06-01 10.1016/j.atmosres.2022.106062 바로가기 바로가기 바로가기 바로가기
Article Examining Trajectories of Early Adolescents' Life Satisfaction in South Korea Using a Growth Mixture Model Various aspects of early adolescence can have a key impact on adult life satisfaction. This study applied a growth mixture model to examine the trajectories of early adolescents' life satisfaction and test the effects of individual (sex, subjective achievement, and self-esteem) and social factors (school adjustment and peer attachment) thereon. For this purpose, a growth mixture model was used on the fifth- (grade five), sixth- (grade six), and seventh- (grade seven) year panel data of 1917 grade one students from the Korean Children and Youth Panel Survey (2010-2016, National Youth Policy Institute), excluding missing samples. Participants were 990 boys (51.6%) and 927 girls (48.4%). The results indicated that the trajectories of life satisfaction could be categorized into three groups: "High Level-decreasing" (57.19%), "Moderate Level-stable" (37.62%), and "Low Level-increasing" (5.19%). Predictors for each class exhibited that female students and individuals with higher levels of self-esteem and school adjustment were more likely to be in the "Low Level-increasing" and "Moderate Level-stable" groups compared to male students and those reporting lower levels of self-esteem and school adjustment. Moreover, students with higher peer attachment were more likely to be in the "Low Level-increasing" group compared to the "High Level-decreasing" group. Educational implications to achieve positive life satisfaction by determining the influence of the predictors for each trajectory are outlined. Park, Sanghyun Kyungpook Natl Univ, Dept Educ, 80 Daehak Ro, Daegu 41566, South Korea 57219724490 sangsang22@naver.com; APPLIED RESEARCH IN QUALITY OF LIFE APPL RES QUAL LIFE 1871-2584 1871-2576 17 1 SSCI SOCIAL SCIENCES, INTERDISCIPLINARY 2022 3.4 18.6 0.47 2025-06-25 4 4 Life satisfaction; Subjective achievement; Self-esteem; School adjustment; Peer attachment; Growth mixture model CHINESE ADOLESCENTS; PROBLEM BEHAVIOR; PEER ATTACHMENT; SEX-DIFFERENCES; SCHOOL; QUALITY; EVENTS; GENDER; PARENT; SCALE Growth mixture model; Life satisfaction; Peer attachment; School adjustment; Self-esteem; Subjective achievement English 2022 2022-02 10.1007/s11482-020-09884-5 바로가기 바로가기 바로가기 바로가기
Article Spatial-temporal variability of climate indices in Chungcheong provinces of Korea: Application of graphical innovative methods for trend analysis Climate change causes unprecedented damage in form of climate extreme events such as floods and drought, especially in the agricultural sector. Understanding the variations and trends of climate characteristics is a step toward mitigating climate-related disasters. This study investigates the annual and seasonal spatial-temporal variability of UNEP and De Martonne climate indices from 10 synoptic stations distributed homogeneously over the Chungcheong Provinces in Korea from 1974 to 2019. The spatial assessment of the variability of climate indices was conducted using the inverse distance weighting (IDW) interpolation method. The annual and sea-sonal trends were assessed using innovative trend analysis (ITA), while a further trend assessment on a seasonal scale was conducted using innovative polygon trend analysis (IPTA) to reveal periodic features and trend transitions. The results of the ITA were compared to the classical Mann-Kendall (MK) and Modified Mann -Kendall (MMK) trend methods. The findings revealed that the Chungcheong Provinces is a wet climate domi-nance on an annual scale, with a high occurrence frequency of humid to extreme humid climates. However, there are variations in the climatic classes of UNEP and De Martonne indices on the seasonal timescale and across the stations. The spatial assessment indicated the dominance of moderate climatic conditions, while the heavy cli-matic condition is consistent at the far-end northeast. The ITA shows significant (95% confidence level) upward trends on an annual scale at 50 and 60% of the stations in UNEP and De Martonne indices, respectively. Moreover, an increasingly significant trend dominated the summer and autumn, while spring and winter seasons exhibited significant decreasing trends. The IPTA shows a dominant transition from the increasing area in autumn to decreasing area in winter, while summer consistently transited in the increasing region at almost all the stations. Both climate indices demonstrate homogeneous and isotropic behaviors and nearly stable condi-tions. Furthermore, ITA and MK trend statistics indicate a good positive correlation (r > 0.50). The findings of this study are important for the ongoing climate-change-related policy in the agricultural sector in Korea. Adelodun, Bashir; Odey, Golden; Cho, Hyungon; Lee, Seulgi; Adeyemi, Khalid Adeola; Choi, Kyung Sook Kyungpook Natl Univ, Dept Agr Civil Engn, Daegu 41566, South Korea; Univ Ilorin, Dept Agr & Biosyst Engn, PMB 1515, Ilorin 240003, Nigeria; Natl Univ, Inst Agr Sci & Technol, Daegu 41566, South Korea ; Adelodun, Bashir/O-2941-2018; Odey, Golden/MVV-6310-2025 57193774482; 57211444984; 57871732100; 57191698515; 57487234500; 54392662900 adelodun.b@unilorin.edu.ng;ks.choi@knu.ac.kr; ATMOSPHERIC RESEARCH ATMOS RES 0169-8095 1873-2895 280 SCIE METEOROLOGY & ATMOSPHERIC SCIENCES 2022 5.5 18.6 2.03 2025-06-25 18 21 Climate variability; Trend analysis; UNEP climate index; De Martonne climate index; Graphical trend methods; Climate trends PRECIPITATION; EXTREMES; RAINFALL; TEMPERATURE; HOMOGENEITY; REGION; TERM Climate trends; Climate variability; De Martonne climate index; Graphical trend methods; Trend analysis; UNEP climate index Korea; Agriculture; Inverse problems; Climate index; Climate trends; Climate variability; De marton climate index; Graphical trend method; Innovative trends; Spatial temporals; Trend analysis; UNEP climate index; climate change; graphical method; interpolation; spatial variation; temporal variation; trend analysis; Climate change English 2022 2022-12-15 10.1016/j.atmosres.2022.106420 바로가기 바로가기 바로가기 바로가기
Article Alternative method for measuring characteristic lengths in absorbing phase transitions We applied an alternative method for measuring characteristic lengths reported recently by one of us [J. M. Kim, J. Stat. Mech. (2021) 03321310.1088/1742-5468/abe599] to the models in the Manna universality class, i.e., the stochastic Manna sandpile and conserved lattice gas models in various dimensions. The universality of the Manna model has been under long debate particularly in one dimension since the work of M. Basu et al. [Phys. Rev. Lett. 109, 015702 (2012)10.1103/PhysRevLett.109.015702], who claimed that the Manna model belongs to the directed percolation (DP) universality class and that the independent Manna universality class does not exist. We carried out Monte Carlo simulations for the stochastic Manna sandpile model in one, two, and three dimensions and the conserved lattice gas model in three dimensions, using both the natural initial states (NISs) and uniform initial states (UISs). In two and three dimensions, the results for R(t), defined by R(t)=L[(ρa2)/(ρa)2-1]1/d, L and ρa being, respectively, the system size and activity density, yielded consistent results for the two initial states. R(t) is proportional to the correlation length following R(t)∼t1/z at the critical point. In one dimension, the data of R(t) for the Manna model using NISs yielded anomalous behavior, suggesting that NISs require much longer prerun time steps to homogenize the distribution of particles and larger systems to eliminate the finite-size effect than those employed in the literature. On the other hand, data from UISs yielded a power-law behavior, and the estimated critical exponents differed from the values in the DP class. © 2022 American Physical Society. Kim, Jin Min; Lee, Sang Bub Department of Physics and OMEG Institute, Soongsil University, Seoul, 06978, South Korea; Department of Physics and OMEG Institute, Soongsil University, Seoul, 06978, South Korea, Professor Emeritus, Kyungpook National University, Daegu, 41566, South Korea 57191681790; 57196249242 Physical Review E PHYS REV E 2470-0045 2470-0053 105 2 SCIE PHYSICS, FLUIDS & PLASMAS;PHYSICS, MATHEMATICAL 2022 2.4 18.7 0.28 2025-06-25 2 Crystal lattices; Intelligent systems; Monte Carlo methods; Solvents; Stochastic models; Absorbing phase transitions; Characteristic length; Conserved lattice gas models; Directed percolation; Initial state; One dimension; Stochastics; Three dimensions; Two-dimensions; Universality class; article; Monte Carlo method; phase transition; stochastic model; Stochastic systems English Final 2022 10.1103/physreve.105.025307 바로가기 바로가기 바로가기
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