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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 Converting crystalline thermosetting urea-formaldehyde resins to amorphous polymer using modified nanoclay Thermosetting urea-formaldehyde (UF) resins as the most common adhesives for wood-based composites emit formaldehyde, which forces producers to lower formaldehyde/urea (F/U) molar ratio for the UF resins synthesis. However, low-molar-ratio (below 1.0) UF resins have low formaldehyde emission at the expense of poor adhesion, which is responsible for the formation of crystalline domains as a result of hydrogen bonds between linear molecules. For the first time, this study reports the conversion of crystalline UF resins to amorphous polymers by blocking the hydrogen bonds, using transition metal ion-modified bentonite (TMI-BNT) nanoclay through in situ intercalation. The modified UF resins with 5% TMI-BNT showed an almost amorphous structure, faster curing and higher cross-linking density compared with those of neat resins, and resulted in 56.4% increase in the adhesion strength and 48.3% reduction in the formaldehyde emission. Thus, blocking hydrogen bonds in low F/U molar ratio UF resins with TMI-BNT converted crystalline UF resins to almost amorphous ones, resulting in a significant improvement in their adhesion with a low crystallinity. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Wibowo, Eko Setio; Lubis, Muhammad Adly Rahandi; Park, Byung-Dae; Kim, Jong Sik; Causin, Valerio Kyungpook Natl Univ, Dept Wood & Paper Sci, Daegu 41566, South Korea; Chonnam Natl Univ, Dept Wood Sci & Engn, Gwangju 61186, South Korea; Univ Padua, Dipartimento Sci Chim, Via Marzolo 1, I-35131 Padua, Italy; Indonesian Inst Sci LIPI, Res Ctr Biomaterial, Jl Raya Bogor Km 46, Bogor 16911, Indonesia Park, Byung-Dae/ABB-1934-2020; Kim, Jong Sik/AAI-4265-2021; Causin, Valerio/ABB-2444-2021; Lubis, Muhammad/K-2440-2019; Wibowo, Eko/AAL-5888-2021 57214910272; 57192278476; 7402834820; 55995782100; 6602309019 byungdae@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 87 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 3.29 2025-06-25 62 70 Urea-formaldehyde resins; Linear molecules; Hydrogen bonds; Crystalline; Modified nanoclay; Adhesion THERMAL CURING BEHAVIOR; MOLE RATIO; NMR-SPECTROSCOPY; SOLID-STATE; ADHESIVES; EMISSION; WOOD; UF; CELLULOSE; ACID Adhesion; Crystalline; Hydrogen bonds; Linear molecules; Modified nanoclay; Urea–formaldehyde resins Adhesion; Adhesives; Crystallinity; Formaldehyde; Hydrogen Bonds; Metabolism; Adhesion; Adhesives; Crystalline materials; Crystallinity; Formaldehyde; Hydrogen bonds; Metabolism; Metal ions; Molar ratio; Molecules; Nanocomposites; Synthetic resins; Transition metal compounds; Transition metals; Urea; Amorphous polymers; Amorphous structures; Cross-linking density; Crystalline domains; Formaldehyde emission; Linear molecules; Modified bentonites; Nano clays; Urea formaldehyde resins English 2020 2020-07-25 10.1016/j.jiec.2020.03.014 바로가기 바로가기 바로가기 바로가기
Article Effects of the annealing temperature on the properties of sulfur-graded Cu2ZnSn(S,Se)4 thin films grown by a modified two-step process In this study, we investigated the electrical and structural properties of sulfur-graded Cu2ZnSn(S,Se)(4) (CZTSSe) thin films grown using a modified two-step process according to the annealing temperature. The sulfur content of the CZTSSe thin film was increased with annealing temperature and a Zn(S, Se) secondary phase was observed at temperatures higher than 500 degrees C. The Raman spectrum of the CZTSSe thin film shifted continuously toward the high frequency direction with increasing S content and the Cu2SnSe3 (CTSe) secondary phase was present below 440 degrees C. From the results of dimpling Raman spectroscopy and scanning transmission electron microscopy (STEM) line scanning, we confirmed that the S content increased gradually from the Mo back contact to the surface of the CZTSSe thin film. Finally, a sulfur-graded CZTSSe thin film with a photovoltaic efficiency of 7.03% was fabricated by optimizing the annealing temperature. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Ko, Byoung-Soo; Kim, Dae-Hwan; Hwang, Dae-Kue; Lee, Seoung-Jun; Kim, Jong Su Kyungpook Natl Univ, Dept Radiat Oncol, Chilgok Hosp, Daegu, South Korea; Yeungnam Univ, Dept Phys, Gyongsan 38541, South Korea; Daegu Gyeongbuk Inst Sci & Technol, Daegu 711873, South Korea; Kyungpook Natl Univ Hosp, Dept Radiat Oncol, Daegu, South Korea Hwang, Dae-Kue/ABG-2664-2020; Kim, Jihyun/F-6940-2013; Hwang, Dae-Kue/A-4929-2009 55969338100; 57778048600; 7401880233; 57204661287; 55863440700 dkhwang@dgist.ac.kr;jongsukim@ynu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 82 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.34 2025-06-25 7 7 CZTSSe; Co-evaporation; H2S gas; Rapid thermal process; Sulfur-graded; Zn(S,Se) SOLAR-CELLS; SOLID-SOLUTIONS; CU2ZNSNSE4; SELENIZATION; DEPOSITION Co-evaporation; CZTSSe; H<sub>2</sub>S gas; Rapid thermal process; Se); Sulfur-graded; Zn(S Annealing; Copper compounds; High resolution transmission electron microscopy; Rapid thermal processing; Scanning electron microscopy; Selenium compounds; Sulfur; Tin compounds; Annealing temperatures; Co-evaporations; CZTSSe; Electrical and structural properties; High frequency HF; Photo-voltaic efficiency; Scanning transmission electron microscopy; Two-step process; Thin films English 2020 2020-02-25 10.1016/j.jiec.2019.11.004 바로가기 바로가기 바로가기 바로가기
Article High-performance hepatobiliary dysprosium contrast agent for ultra-high-field magnetic resonance imaging Ultra-high-field (UHF) magnetic resonance imaging (MRI) can open up new avenues in clinical diagnostic imaging. Its sensitivity can be further improved using contrast agents (CAs). Therefore, developing lowmolecular-weight MR CAs that are efficient under UHF is crucial to ensure taking full advantage of MR imaging at UHF. Moreover, designing highly stable UHF liver-specific CA has been challenging. Here, using dysprosium (Dy3+), which relaxes water protons via a Curie relaxation that increases T-2 relaxation substantially with the magnetic field strength, we report a new macrocyclic liver specific Dy3+ complex (Dy[DO3A-EOB]). We observed a 7.06 times higher r(2)/r(1) ratio of Dy[DO3A-EOB] at 9.4 T than that of 1.5 T, which suggests a superior negative-enhancing MR CA at UHF. In vivo MR imaging results further demonstrated that Dy[DO3A-EOB] showed a much strong negative enhancement at UHF (9.4T) than under a low field (1.5 T). It was also found that, in addition to the ligand structure, the metal itself plays an important role in determining the liver uptake pattern of the CA. Therefore, we successfully demonstrated the first example of a small-molecular-weight liver-specific Dy3+ complex acting as a T-2 CA with high sensitivity at UHF for diagnosis of liver diseases. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Baek, Ahrum; Kim, Hee-kyung; Yang, Ji-ung; Choi, Garam; Kim, Minsup; Cho, Art E.; Kim, Yeoun-hee; Kim, Soyeon; Sung, Bokyung; Yang, Byeong Woo; Seo, Heejin; Lee, Gang-Ho; Ryeom, Hun-Kyu; Jung, Hoesu; Lee, Taekwan; Chang, Yongmin Kyungpook Natl Univ, Dept Med & Biol Engn, Daegu 41944, South Korea; Kyungpook Natl Univ, Inst Biomed Engn Res, Daegu 41944, South Korea; Korea Univ, Inst New Drug Res, Sejong Campus,2511 Sejong Ro, Sejong City 30019, South Korea; Myungmoon Bio Co, Dept R&D Ctr, Hwaseong 18622, Gyeonggi Do, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Chem, Daegu 41944, South Korea; Kyungpook Natl Univ, Sch Med, Dept Radiol, Daegu 41944, South Korea; Daegu Gyeongbuk Med Innovat Fdn, Lab Anim Ctr, Daegu 41061, South Korea; Kyungpook Natl Univ, Sch Med, Dept Mol Med, Daegu 41944, South Korea; Kyungpook Natl Univ Hosp, Dept Radiol, Daegu 41944, South Korea ; Choi, Garam/NHP-2919-2025; Yang, Byeong Woo/HII-8624-2022 57194601711; 56014729400; 57212217968; 56013903700; 56122945800; 8586262300; 35311040700; 57203773250; 58929528400; 57215216131; 57215214275; 7404851841; 6505864513; 58728242200; 55501335000; 7501840633 taekwanlee@dgmif.re.kr;ychang@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 85 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.41 2025-06-25 8 8 Dysprosium; T-2 contrast agent; Ultra-high field MRI; Liver TO-NOISE RATIO; RELAXATION AGENTS; PROTON RELAXATION; MRI; GADOLINIUM; EXCHANGE; RELAXIVITY; EXPRESSION; COMPLEXES; TRANSPORT Dysprosium; Liver; T<sub>2</sub> contrast agent; Ultra-high field MRI Diagnosis; Dysprosium; Dysprosium compounds; Liver; Magnetism; Molecular weight; Clinical diagnostic imaging; High sensitivity; Low molecular weight; Magnetic field strengths; T2 contrast; Ultra high field magnetic resonance imaging; Ultra-high field mris; Ultra-high fields; Magnetic resonance imaging English 2020 2020-05-25 10.1016/j.jiec.2020.02.015 바로가기 바로가기 바로가기 바로가기
Article Hydrogen halide-free synthesis of organohalides for organometal trihalide perovskite solar cells We report an environmentally benign and economical approach for the large-scale production of methylammonium halides (MAX, X= I or Br) and formamidinium halides (FAX, X= I or Br) as core materials in perovskite solar cells (PSCs), which have emerged as the most promising sustainable energy source. In contrast to conventional processes that use highly toxic HI and HBr, ion exchange between sodium halide (NaX) and methlyammonium chloride (MACI) or formamidinium chloride (FACI) was found to be highly suitable for mass production. The average reaction yields of the ion-exchange process were comparable to that of the HX synthesis route: 98.8% for MAI, 98.7% for MABr, 98.0% for FAI, and 98.9% for FABr. The purity of the prepared samples was analyzed by various spectroscopic methods. Finally, a perovskite solar cell was fabricated with MAI prepared by ion-exchange reaction. The power conversion efficiency, which was measured to support the industrial feasibility of the method, was found to be similar to that of a device fabricated with commercial MAI. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Min, Gyeonguk; Yun, Yeonghun; Choi, Heung-Jin; Lee, Sangwook; Joo, Jin Kyungpook Natl Univ, Dept Appl Chem, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea Lee, Sangwook/O-9166-2015; Yun, Yeonghun/KRP-9208-2024 57217874626; 57202548363; 7404339413; 57203597324; 57189617034 wook2@knu.ac.kr;joojin@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 89 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.34 2025-06-25 7 5 Perovskite solar cells; Hydrogen halide-free; Methylammonium iodide; Methylammonium bromide; Formamidinium iodide; Formamidinium bromide CHARGE-CARRIER MOBILITIES; METAL HALIDE; BASE ADDUCT; EFFICIENT; IODIDE; PERFORMANCE; QUANTIFICATION; LIFETIMES; DIFFUSION; CATION Formamidinium bromide; Formamidinium iodide; Hydrogen halide-free; Methylammonium bromide; Methylammonium iodide; Perovskite solar cells Bromine compounds; Chlorine compounds; Coremaking; Ion exchange; Ions; Perovskite; Sodium compounds; Solar power generation; Spectroscopic analysis; Environmentally benign; Hydrogen halides; Ion exchange process; Ion exchange reactions; Large scale productions; Power conversion efficiencies; Sustainable energy sources; Various spectroscopic methods; Perovskite solar cells English 2020 2020-09-25 10.1016/j.jiec.2020.06.006 바로가기 바로가기 바로가기 바로가기
Article Multifunctional aminoethylpiperazine-modified graphene oxide with high dispersion stability in polar solvents for mercury ion adsorption Graphene-derived materials including graphene oxide (GO) have infinite potential, but proper dispersibility must be ensured for the utilization of functionalities. To strengthen the compatibility of functionality and dispersibility, a new method by simply functionalizing GO with aminoethylpiperazine (AEP) is provided. Characterization of the synthesized AEP-GO was comprehensively carried out by several spectroscopic methods. Also, as intended, AEP-GO possessed good dispersibility in common organic solvents owing to the characteristics of the polytrophic amines in AEP. In particular, we investigated the possibility of its use as adsorbent for mercury ion as a representative of heavy metals. The solution with AEP-GO of 0.1 wt% achieved Hg2+ removal efficiency of 97.7% at low Hg2+ concentration of 50 ppm. Also, among the various adsorbent concentration, maximum adsorption capacity and removal efficiency were 107.2 mg/g and 98.4%, respectively. In this regard, our findings contribute to the discovery of new approaches to preparing graphene materials. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Jin, Jeong-Un; Yeo, Hyeonuk; Hahn, Jae Ryang; Yu, Jaesang; Ku, Bon-Cheol; You, Nam-Ho Korea Inst Sci & Technol KIST, Inst Adv Composite Mat, Carbon Composite Mat Res Ctr, Wonju 55324, Jeonbuk, South Korea; Jeonbuk Natl Univ, Dept Chem, Jeonju 54896, South Korea; Kyungpook Natl Univ, Dept Chem Educ, Daegu 41566, South Korea yeo, hyeonuk/G-7890-2017; Yeo, Hyeonuk/AHE-0397-2022; Ku, Bon-Cheol/I-7493-2019 57203890712; 55324816500; 7202494378; 36669801400; 37077515100; 55204428300 polymer@kist.re.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 90 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.48 2025-06-25 10 9 Graphene oxide; Functionalization; Dispersibility; Mercury; Adsorption HEAVY-METAL IONS; EFFICIENT REMOVAL; GAS BARRIER; WASTE-WATER; NANOCOMPOSITES; NANOSHEETS; COMPOSITE; POLYMER; HG(II) Adsorption; Dispersibility; Functionalization; Graphene oxide; Mercury Amines; Efficiency; Heavy metals; Mercury (metal); Spectroscopic analysis; Adsorbent concentration; Adsorption capacities; Derived materials; Dispersibilities; High dispersion stabilities; New approaches; Removal efficiencies; Spectroscopic method; Graphene English 2020 2020-10-25 10.1016/j.jiec.2020.07.015 바로가기 바로가기 바로가기 바로가기
Article Multifunctional imaging of amyloid-beta peptides with a new gadolinium-based contrast agent in Alzheimer's disease Multifunctional imaging of the deposition of amyloid-beta (A beta) aggregates in the brain is of great importance in diagnosing Alzheimer's disease. Herein, we report a multifunctional A beta-targeting small-molecular-weight gadolinium (Gd)-based contrast agent (CA), Gd-DO3A-Chal (a new Gd-chelate conjugated with chalcone), that showed 8 times higher binding affinity to A beta aggregates than a previously reported Gd-chelate conjugated with Pittsburgh compound B. Gd-DO3A-Chat showed multimodal imaging capability. As a new fluorescence imaging probe, Gd-DO3A-Chal showed a good match with immunostained images using 6E10 monoclonal antibodies for the detection of A beta aggregates in 5XFAD transgenic mouse brain sections. For in vivo magnetic resonance (MR) imaging without blood-brain barrier disruption, longitudinal relaxation time (T-1)-weighted MR images after intravenous administration of Gd-DO3A-Chal showed signal enhancement of the A beta distribution in living 5XFAD transgenic mouse brain. Therefore, in vivo MR images for A beta detection in addition to fluorescent optical images of A beta aggregates with high specificity and sensitivity using this new multifunctional A beta-targeting CA were successfully demonstrated. (C) 2019 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. Choi, Garam; Kim, Hee-Kyung; Baek, Ah Rum; Kim, Soyeon; Kim, Min Jung; Kim, Minsup; Cho, Art E.; Lee, Gang-Ho; Jung, Hoesu; Yang, Ji-ung; Lee, Taekwan; Chang, Yongmin Kyungpook Natl Univ, Dept Med & Biol Engn, Daegu 41944, South Korea; Myungmoon Bio Co, Dept R&D Ctr, Hwaseong 18622, Gyeonggi Do, South Korea; Kyungpook Natl Univ, Inst Biomed Engn Res, Daegu 41944, South Korea; Korea Univ, Dept Bioinformat, Sejong Campus, Sejong 30019, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Chem, Daegu 41944, South Korea; Daegu Gyeongbuk Med Innovat Fdn, Lab Anim Ctr, Daegu 41061, South Korea; Kyungpook Natl Univ, Sch Med, Dept Mol Med, Daegu 41944, South Korea; Kyungpook Natl Univ Hosp, Dept Radiol, Daegu 41944, South Korea Choi, Garam/NHP-2919-2025 56013903700; 56014729400; 57194601711; 57203773250; 57212216785; 56122945800; 8586262300; 7404851841; 58728242200; 57212217968; 55501335000; 7501840633 taekwanlee@dgmif.re.kr;ychang@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 83 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.62 2025-06-25 14 13 Gadolinium complex; Magnetic resonance contrast agent; Chalcone; Derivative; Multifunctional imaging; Amyloid imaging PLAQUES; PROBES; BINDING; COMPLEXES; INSIGHTS; DESIGN Amyloid imaging; Chalcone; Derivative; Gadolinium complex; Magnetic resonance contrast agent; Multifunctional imaging Aggregates; Binding energy; Chelation; Chemical detection; Derivatives; Diagnosis; Fluorescence imaging; Geometrical optics; Glycoproteins; Image enhancement; Magnetic resonance; Magnetic resonance imaging; Monoclonal antibodies; Neurodegenerative diseases; Alzheimer's disease; Amyloid-beta peptides; Chalcones; Gadolinium complexes; Intravenous administration; Longitudinal relaxation time; Magnetic resonance contrast agents; Multi-modal imaging; Gadolinium compounds English 2020 2020-03-25 10.1016/j.jiec.2019.11.031 바로가기 바로가기 바로가기 바로가기
Article NIR dye-loaded mesoporous silica nanoparticles for a multifunctional theranostic platform: Visualization of tumor and ischemic lesions, and performance of photothermal therapy We report the fabrication of multifunctional theranositic biomaterials via non-covalent, rapid, and effective encapsulation of 1,1'dioctadecyl-3,3,3',3'-tetrametylindotrucarbocyanine iodide (DIR) onto mesoporous silica nanoparticles by coating the surface of polyethylene glycol (PEG-DIR@MSN). PEG-DIR@MSNs exhibited great stability with excellent biocompatibility and photothermal conversion properties. PEG-DIR@MSN allowed for not only the detection of various types of tumor and ischemic lesions but also photothermal therapy against breast cancer in living mice, suggesting that PEGDIR@MSN is a valuable multifunctional theranostic platform. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Lee, Sang Bong; Lee, Ho Won; Darmawan, Bobby Aditya; Lee, In-Kyu; Cho, Sung Jin; Chin, Jungwook; Kim, Sang Kyoon; Park, Jong-Oh; Kim, Kil Soo; Lee, Sang-Woo; Lee, Jaetae; Jeon, Yong Hyun Korea Inst Med Microrobot KIMIRo, Gwangju 61011, South Korea; Kyungpook Natl Univ Hosp, Dept Nucl Med, Daegu 702210, South Korea; Kyungpook Natl Univ Hosp, Leading Edge Res Ctr Drug Discovery & Dev Diabet, Daegu 702210, South Korea; Daegu Gyeongbuk Med Innovat Fdn, New Drug Dev Ctr, Daegu, South Korea; Daegu Gyeongbuk Med Innovat Fdn, Lab Anim Ctr, Daegu 3604, South Korea; Kyungpook Natl Univ, Coll Vet Med, Daegu 41566, South Korea; Chonnam Natl Univ, Sch Mech Engn, 77 Yongbong Ro, Gwangju 61186, South Korea Lee, Sang/I-8954-2014; Chin, Jungwook/E-7611-2013; Jeon, Yong/N-6910-2019; Darmawan, Bobby Aditya/IXD-1354-2023; Lee, Jaetae/ABF-3980-2020; Kim, Seung/N-5248-2019; Kim, Sun/C-2026-2011; lee, sangwoo/KUD-1906-2024 57190304501; 35337240700; 57190072630; 36071537600; 58735369700; 36554007700; 55862436000; 35107801500; 35272034300; 57196249819; 7601451907; 16042453400 jeon9014@gmail.com; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 88 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.41 2025-06-25 9 10 Near infrared fluorescent dyes; Mesoporous silica nanoparticles; Theranostic biomaterials; Tumor detection; Ischemia; Photothermal therapy LUMINESCENT; SYSTEM; CELLS Ischemia; Mesoporous silica nanoparticles; Near infrared fluorescent dyes; Photothermal therapy; Theranostic biomaterials; Tumor detection Biocompatibility; Mammals; Nanoparticles; Silica; Theranostics; Tumors; Breast Cancer; Mesoporous silica nanoparticles; Non-covalent; Photo-thermal conversions; Photothermal therapy; Silica nanoparticles English 2020 2020-08-25 10.1016/j.jiec.2020.03.027 바로가기 바로가기 바로가기 바로가기
Article Polymer particles with controllable and complex structures for high immobilization of noble-metal nanoparticles This work demonstrates the fabrication of cationic polymer particles with controllable and complex structures for the high immobilization of noble-metal nanoparticles (NPs). The fabrication involves the use of a cationic extra monomer to synthesize polystyrene (PS) solid spheres with cationic character, followed by their transformation into complex-structured particles via the phase separation route in a seeded dispersion polymerization. Control of the phase separation enables the formation of PS particles with cage- and bowl-like shapes as well as hollow structures. The large surface areas of the complex-structured particles, as theoretically calculated using simple models, and the electrostatic attraction between them and the negatively charged noble-metal NPs, as experimentally observed, allow the high immobilization of noble-metal NPs onto their surfaces. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Kim, Da In; Park, Ju Hyang; Seo, Hojun; Hong, Sang Gi; Kim, Hye Ji; Ahn, Hyungju; Kim, Jongbok; Moon, Geon Dae; Hyun, Dong Choon Kyungpook Natl Univ, Dept Polymer Sci & Engn, Daegu 41566, South Korea; Korea Inst Ind Technol, Dongnam Reg Div, Busan 46938, South Korea; POSTECH, Pohang Accelerator Lab, Pohang 37673, Gyeongbuk, South Korea; Kumoh Natl Inst Technol, Dept Mat Sci & Engn, Gumi 39177, Gyeongbuk, South Korea kim, hye/AAF-8671-2019; Ahn, Hyungju/AAT-6251-2021 57204061726; 57189227357; 57199231315; 57205726022; 57214326896; 56452216500; 15762365000; 23489708500; 15834575400 dong.hyun@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 82 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.34 2025-06-25 6 5 Polymer particle; Complex-structured colloid; Phase separation; Noble-metal nanoparticle; Large surface area GOLD NANOPARTICLES; POLYSTYRENE MICROSPHERES; COMPOSITE-PARTICLES; HYDROGEN PHOSPHIDE; CORE-SHELL; FABRICATION; SILVER; PALLADIUM; MECHANISM; THPC Complex-structured colloid; Large surface area; Noble-metal nanoparticle; Phase separation; Polymer particle Cationic polymerization; Phase separation; Precious metals; Sols; Cationic polymers; Complex structure; Electrostatic attractions; Large surface area; Negatively charged; Polymer particles; Seeded dispersion polymerization; Structured particles; Metal nanoparticles English 2020 2020-02-25 10.1016/j.jiec.2019.11.008 바로가기 바로가기 바로가기 바로가기
Article Repeated geometrical T-junction breakup microfluidic filter device by injection of premixed emulsion for microdroplet production In this study, we propose a repeated geometrical T-junction breakup microfluidic filter device for fabricating microspheres from premixed emulsions. The proposed microfluidic filter device is composed of multiple repeated T shapes in the microchannel for droplet splitting. Microdroplets are guided along the microchannel and divided symmetrically at the T-junction in the microchannel. The results obtained herein show that as the number of filters was increased, the droplet diameter decreased and the droplet size distribution improved significantly. The behaviors of the microdroplets in the microchannel were inspected as a function of the viscosity of the premixed emulsion solution. The microdroplet diameter increased significantly as the emulsion viscosity increased. Furthermore, the microfluidic filter device was tested by using it to prepare chitosan microspheres. Chitosan microspheres of a narrow size distribution with coefficient value of 6.2% were prepared successfully. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved. Kim, Chul Min; Choi, Hye Jin; Park, Eun Ju; Kim, Gyu Man Kyungpook Natl Univ, Sch Mech Engn, 1370 Sankyuk Dong, Daegu 702701, South Korea; Dankook Univ, Inst Tissue Regenerat Engn ITREN, Cheonan, South Korea; Pukyong Natl Univ, Dept Display Engn, Busan, South Korea Kim, Chul-Min/ABI-6131-2020 59316640400; 57203969417; 57194826074; 55664733000 gyuman.kim@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 81 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.48 2025-06-25 10 11 Microdroplets; Microparticles; Single emulsion; Microfluidics; Droplet splitting; High throughput MICROSPHERES; MONODISPERSE; GENERATION; FLOW Droplet splitting; High throughput; Microdroplets; Microfluidics; Microparticles; Single emulsion Chitosan; Drops; Emulsification; Microchannels; Microfluidics; Microspheres; Size distribution; Viscosity; Chitosan microspheres; Droplet size distributions; High throughput; Micro droplets; Micro-particles; Microfluidic filters; Narrow size distributions; Single emulsions; Passive filters English 2020 2020-01-25 10.1016/j.jiec.2019.08.055 바로가기 바로가기 바로가기 바로가기
Article Studies on the effect of acetate ions on the optical properties of InP/ZnSeS core/shell quantum dots The effect of residual acetate ions in indium oleate (In(OA)(3)) precursor on the photoluminescence quantum yield (PL QY) and size distribution of InP-based core/shell quantum dots (QDs) was studied. For comparison, the synthesis conditions of In(OA)(3) were varied to control the amount of acetate ions that remained in the In(OA)(3) precursor. The acetate ions resulted in smaller crystallites in single QD and in surfaces with a greater defect concentration, yielding low PL QYs and broader size distributions. For a complete exchange of acetate ligand in indium acetate (In(Ac)(3)) with oleate, In(Ac)(3) was reacted with excess oleic acid. Pure In(OA)(3) precursor led to bright InP/ZnSeS core/shell QDs with a uniform size after a shell was formed on the InP core QDs. (C) 2019 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry. Min, Chan-Hong; Joo, Jin Kyungpook Natl Univ, Dept Appl Chem, Daegu 41566, South Korea 57211962838; 57189617034 joojin@knu.ac.kr; JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY J IND ENG CHEM 1226-086X 1876-794X 82 SCIE CHEMISTRY, MULTIDISCIPLINARY;ENGINEERING, CHEMICAL 2020 6.064 15.7 0.34 2025-06-25 6 7 Quantum dots; Indium oleate; Indium acetate; Indium phosphide; Core/shell; Photoluminescence quantum yields LARGE-SCALE SYNTHESIS; INP NANOCRYSTALS; SEMICONDUCTOR NANOCRYSTALS; HIGHLY LUMINESCENT; GROWTH; HETEROSTRUCTURES; PHOSPHIDE Core/shell; Indium acetate; Indium oleate; Indium phosphide; Photoluminescence quantum yields; Quantum dots Crystallites; III-V semiconductors; Ions; Nanocrystals; Optical properties; Organometallics; Photoluminescence; Quantum yield; Semiconducting indium phosphide; Semiconductor quantum dots; Size distribution; Acetate ligands; Complete exchange; Core/shell; Core/shell quantum dots; Defect concentrations; Indium acetate; Photoluminescence quantum yields; Synthesis conditions; Indium phosphide English 2020 2020-02-25 10.1016/j.jiec.2019.10.021 바로가기 바로가기 바로가기 바로가기
Article Progesterone modulates theta oscillations in the frontal-parietal network The neuroactive metabolites of the steroid hormones progesterone (P4) and testosterone (T) are GABAergic modulators that influence cognition, yet, the specific effect of P4 and T on brain network activity remains poorly understood. Here, we investigated if a fundamental oscillatory network activity pattern, often related to cognitive control, frontal midline theta (FMT) oscillations, are modulated by steroids hormones, P4 and T. We measured the concentration of P4 and T using salivary enzyme immunoassay and FMT oscillations using high-density electroencephalography (EEG) during eyes-open resting-state in 55 healthy women and men. Electrical brain activity was analyzed using Fourier analysis, aperiodic signal fitting, and beamformer source localization. Steroid hormone concentrations and biological sex were used as predictors for scalp and source-estimated amplitude of theta oscillations. Elevated concentrations of P4 predicted increased amplitude of FMT oscillations across both sexes, and no relationship was found with T. The positive correlation with P4 was specific to the frontal midline electrodes and survived correction for the background aperiodic signal of the brain. Using source localization, FMT oscillations were localized to the frontal-parietal network (FPN). Additionally, theta amplitude within the FPN, but not the default mode network, positively correlated with P4 concentration. Our results suggest that P4 concentration modulates brain activity via upregulation of theta oscillations in the FPN. Riddle, Justin; Ahn, Sangtae; McPherson, Trevor; Girdler, Susan; Frohlich, Flavio Univ N Carolina, Dept Psychiat, Chapel Hill, NC 27599 USA; Univ N Carolina, Carolina Ctr Neurostimulat, Chapel Hill, NC 27515 USA; Univ N Carolina, Ctr Womens Mood Disorders, Chapel Hill, NC 27515 USA; Kyungpook Natl Univ, Sch Elect Engn, Daegu, South Korea; Univ N Carolina, Dept Neurol, Chapel Hill, NC 27515 USA; Univ N Carolina, Dept Cell Biol & Physiol, Chapel Hill, NC 27515 USA; Univ N Carolina, Dept Biomed Engn, Chapel Hill, NC 27515 USA; Univ N Carolina, Neurosci Ctr, Chapel Hill, NC 27515 USA Frohlich, Flavio/P-6429-2017; Ahn, Sangtae/AFQ-7342-2022; Riddle, Justin/JYP-5341-2024 56967781500; 55468016100; 57203320016; 7004087063; 57204276548 flavio_frohlich@med.unc.edu; PSYCHOPHYSIOLOGY PSYCHOPHYSIOLOGY 0048-5772 1469-8986 57 10 SCIE;SSCI NEUROSCIENCES;PHYSIOLOGY;PSYCHOLOGY, BIOLOGICAL;PSYCHOLOGY, EXPERIMENTAL;PSYCHOLOGY 2020 4.016 15.9 0.65 2025-06-25 10 10 aperiodic signal correction; EEG; frontal midline theta; frontal-parietal network; progesterone; source localization; steroid hormones; theta oscillations PREMENSTRUAL DYSPHORIC DISORDER; ANTERIOR CINGULATE CORTEX; MENSTRUAL-CYCLE; FUNCTIONAL CONNECTIVITY; POSTPARTUM DEPRESSION; AMYGDALA REACTIVITY; ALLOPREGNANOLONE; TESTOSTERONE; BRAIN; STRIATUM aperiodic signal correction; EEG; frontal midline theta; frontal-parietal network; progesterone; source localization; steroid hormones; theta oscillations English 2020 2020-10 10.1111/psyp.13632 바로가기 바로가기 바로가기 바로가기
Article The zeros of a sine-type function and the peak value problem The problem of finding an upper bound for the infinity norm of signals from their sample values is called the peak value problem. The peak value problem is a significant problem related to orthogonal frequency division multiplexing (OFDM) which has applications in wireless networks, audio broadcasting, and mobile communications. In this article, we will first answer the question of whether the zeros of a pi-sine-type function form a stable sampling set for B-beta pi(infinity), 0 < beta < 1. Then, we will address a related question of bounding the infinity norm of a given signal. The sampling set we use only requires a bound on the maximum distance between two consecutive sampling points. Our result for estimating the bound works for a nonuniform sampling set. (C) 2019 Elsevier B.V. All rights reserved. Al-Hammali, Hussain; Faridani, Adel Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea; Oregon State Univ, Dept Math, Corvallis, OR 97331 USA 57211075123; 6602323523 hussain@knu.ac.kr;faridani@oregonstate.edu; SIGNAL PROCESSING SIGNAL PROCESS 0165-1684 1872-7557 167 SCIE ENGINEERING, ELECTRICAL & ELECTRONIC 2020 4.662 15.9 0.2 2025-06-25 3 3 pi-sine-type function; Stable sampling; Bernstein space BAND-LIMITED SIGNALS; POWER RATIO; REDUCTION; TRANSMISSION Bernstein space; Stable sampling; π-sine-type function Electrical engineering; Signal processing; Bernstein space; Infinity norm; Maximum distance; Mobile communications; Nonuniform sampling; Peak values; Sampling points; Upper Bound; Orthogonal frequency division multiplexing English 2020 2020-02 10.1016/j.sigpro.2019.107274 바로가기 바로가기 바로가기 바로가기
Article Effects of Co-culture on Improved Productivity and Bioresource for Microalgal Biomass Using the Floc-Forming Bacteria Melaminivora Jejuensis Bacterial and algal floc formation was induced by inoculating three species of wastewater-derived bacteria (Melaminivora jejuensis, Comamonas flocculans, and Escherichia coli) into algal cultures (Chlorella sorokiniana). Bacterial and algal flocs formed in algal cultures inoculated with M. jejuensis and C. flocculans, and these flocs showed higher sedimentation rates than pure algal culture. The floc formed by M. jejuensis (4988.46 +/- 2589.81 mu m) was 10-fold larger than the floc formed by C. flocculans (488.60 +/- 226.22 mu m), with a three-fold higher sedimentation rate (M. jejuensis, 91.08 +/- 2.32% and C. flocculans, 32.55 +/- 6.33%). Biomass and lipid productivity were improved with M. jejuensis inoculation [biomass, 102.25 +/- 0.35 mg/(L center dot day) and 57.80 +/- 0.20 mg/(L center dot day)] compared with the productivity obtained under pure algal culture conditions [biomass, 78.00 +/- 3.89 mg/(L center dot day) and lipids, 42.26 +/- 2.11 mg/(L center dot day)]. Furthermore, the fatty acid composition of the biomass produced under pure algal culture conditions was mainly composed of C-16:0 (43.67%) and C-18:2 (45.99%), whereas the fatty acid composition of the biomass produced by M. jejuensis was mainly C-16:0 (31.80%), C-16:1 (24.45%), C-18:1 (20.23%), and C-18:2 (16.11%). These results suggest the possibility of developing an efficient method for harvesting microalgae using M. jejuensis and provide information on how to improve biomass productivity using floc-forming bacteria. Kim, Dong-Hyun; Yun, Hyun-Sik; Kim, Young-Saeng; Kim, Jong-Guk Kyungpook Natl Univ, Sch Appl Biosci, Daegu, South Korea; Kyungpook Natl Univ, Coll Nat Sci, Dept Biol, Daegu, South Korea; Kyungpook Natl Univ, Res Inst Ulleung Do & Dok Do, Daegu, South Korea; Kyungpook Natl Univ, Plus KNU Creat BioRes Grp BK21, Sch Life Sci & Biotechnol, Daegu, South Korea Kim, Dong Hyun/LDT-2672-2024 59971802600; 57215320824; 35798433500; 35277198800 kyslhh1228@hanmail.net;kimjg@knu.ac.kr; FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY FRONT BIOENG BIOTECH 2296-4185 8 SCIE MULTIDISCIPLINARY SCIENCES 2020 5.89 16.0 0.82 2025-06-25 18 19 Chlorella sorokiniana; flocculation; Melaminivora jejuensis; sedimentation; biomass harvesting ESCHERICHIA-COLI; NUTRIENT REMOVAL; ALGAL BIOMASS; WASTE-WATER; FLOCCULATION; SEDIMENT; CULTIVATION; LIMITATION; STRATEGIES; GROWTH biomass harvesting; Chlorella sorokiniana; flocculation; Melaminivora jejuensis; sedimentation Biomass; Escherichia coli; Productivity; Biomass productivity; Chlorella sorokiniana; Fatty acid composition; Floc formation; Floc-forming bacteria; Lipid productivities; Microalgal biomass; Sedimentation rates; Fatty acids English 2020 2020-12-18 10.3389/fbioe.2020.588210 바로가기 바로가기 바로가기 바로가기
Review Mitochondrial Dynamics and Bioenergetic Alteration During Inflammatory Activation of Astrocytes Mitochondria are essential cellular organelles that act as metabolic centers and signaling platforms and have been identified as an important subcellular target in a broad range of neuropathologies. Studies on the role of mitochondria in neurological disorders have primarily focused on neurons. However, dysfunctional mitochondria in glial cells, particularly astrocytes, have recently gained research attention due to their close involvement in neuroinflammation and metabolic and neurodegenerative disorders. Furthermore, alterations in mitochondrial energy metabolism in astrocytes have been reported to modulate cellular morphology and activity and induce the release of diverse proinflammatory mediators. Moreover, emerging evidence suggests that dysregulation of mitochondrial dynamics characterized by aberrant fission and fusion events in glial cells is closely associated with the inflammatory activation of glia. In this mini-review, we cover the recent advances in the molecular aspects of astrocytic mitochondrial dynamics and their metabolic changes under the pathological conditions of the central nervous system (CNS). Rahman, Md Habibur; Suk, Kyoungho Kyungpook Natl Univ, Sch Med, Dept Pharmacol, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Biomed Sci, BK21 Plus KNU Biomed Convergence Program, Daegu, South Korea; Kyungpook Natl Univ, Brain Sci & Engn Inst, Daegu, South Korea Rahman, Md Habibur/HMD-4572-2023 59607139800; 7005114595 ksuk@knu.ac.kr; FRONTIERS IN AGING NEUROSCIENCE FRONT AGING NEUROSCI 1663-4365 12 SCIE GERIATRICS & GERONTOLOGY;NEUROSCIENCES 2020 5.75 16.0 0.36 2025-06-25 17 15 glia; astrocyte; mitochondria; fission; fusion; metabolism; neuroinflammation MOLECULAR-MECHANISMS; REACTIVE ASTROCYTES; NEURONS; PROTEIN; DRP1; NEUROPROTECTION; TRAFFICKING; GLYCOLYSIS; METABOLISM; MORPHOLOGY astrocyte; fission; fusion; glia; metabolism; mitochondria; neuroinflammation alpha synuclein; cyclin dependent kinase 5; dynamin; dynamin related protein 1; glial fibrillary acidic protein; interleukin 1beta; mitofusin 1; mitofusin 2; nitric oxide; pyruvate dehydrogenase kinase 2; reactive nitrogen species; reactive oxygen metabolite; tumor necrosis factor; unclassified drug; Alzheimer disease; amyotrophic lateral sclerosis; astrocyte; bioenergy; cerebrovascular accident; enzyme activation; enzyme inhibition; glia cell; human; Huntington chorea; in vitro study; mitochondrial dynamics; nonhuman; Parkinson disease; phenotype; protein expression; protein misfolding; protein phosphorylation; Review; traumatic brain injury English 2020 2020-12-10 10.3389/fnagi.2020.614410 바로가기 바로가기 바로가기 바로가기
Article A study on mixing performance of dean flows through spiral micro-channel under various effects This paper reports a parametric study on mixing performance of dean flows in spiral micro-channels using the finite element method. Many important parameters such as the Reynolds number (Re), Peclet number (Pe), flow rate ratio between two species flows (alpha), and ratio of diffusion coefficient (beta) were examined for enhancing mixing efficiency (eta(mix)). The numerical results matched well with those predicted by the theoretical model. In addition, mixing efficiency of dean flows in the spiral micro-channel generally increased with increasing Re, particularly at low Pe. This is in contrast to results obtained for straight micro-channels with the same channel length. Mixing efficiency (eta(mix)) was affected significantly by the Pe number ranging from 10(3) to 4 x 10(4), and it increases with a decrease in Pe. In addition, eta(mix) varied remarkably with a, and the worst point, at which the eta(mix) decreases by 50%, occurs when a is around 2.0. Otherwise, eta(mix) is shown to be influenced slightly by beta. Furthermore, a new generalized correlation was proposed for predicting the pressure drop throughout a spiral micro-channel effectively. These results provide good suggestions for optimizing mixing efficiency of dean flows in spiral micro-channels, which can be used for further biological and chemical analyses. Ngo, I. L.; Lai, T. K.; Choi, H. J.; Le, H. T. T.; Kim, G. M.; Dang, T. D. Hanoi Univ Sci & Technol, Sch Transportat Engn, 01 Dai Co Viet, Hanoi, Vietnam; Kyungpook Natl Univ, Sch Mech Engn, 80 Daehakro, Daegu 41566, South Korea; Hanoi Univ Sci & Technol, Sch Chem Engn, 01 Dai Co Viet, Hanoi, Vietnam ; Le, Hang/W-1846-2019 56465015200; 57214911693; 57203969417; 56346196000; 55664733000; 42461268600 gyuman.kim@knu.ac.kr;dung.dangtrung@hust.edu.vn; PHYSICS OF FLUIDS PHYS FLUIDS 1070-6631 1089-7666 32 2 SCIE MECHANICS;PHYSICS, FLUIDS & PLASMAS 2020 3.521 16.2 1.22 2025-06-25 21 21 Chemical analysis; Efficiency; Mixing; Reynolds number; Channel length; Flowrate ratio; Generalized correlation; Mixing efficiency; Mixing performance; Numerical results; Parametric study; Theoretical modeling; Peclet number English 2020 2020-02-01 10.1063/1.5142884 바로가기 바로가기 바로가기 바로가기
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