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○ | ○ | Article | Green synthesis of novel CuCo2O4 nanocomposite for stable hybrid supercapacitors by deep eutectic solvents | Currently, many transition metal oxides (TMOs) have been demonstrated as attractive nanomaterials for application in supercapacitors for energy storage/conversion systems. Among TMOs, CuCo2O4 has presented excellent electrochemical properties, including higher electrical behavior. Also, they are readily accessible in earth, ecofriendly and cost effective compared to other nanocompunds. In this research, we have for the first time synthesized CuCo2O4 (CCO) nanomaterials using a deep eutectic solvents (DES) method for supercapacitor (SC) applications. We systematically studied the effect of annealing temperature of CCO on its structural, morphological, and electrical properties. The CCO was annealed at different temperature of 150, 200, 250, and 300 degrees C for 3 h. CCO annealed at 250 degrees C exhibited the superior performance compared to other as-synthesized and annealed samples. The optimized CCO electrode shows outstanding supercapacitive properties with specific capacity 421 mAh g(-1) at 10 mV s(-1), excellent GCD capability, and super cycling stability. This indicates that the DES-prepared CCO shows better electrochemical performance due to highly porous nanostructure providing more active sites for easy transformation of the ions. (C) 2021 Elsevier B.V. All rights reserved. | Shinde, Surendra K.; Karade, Swapnil S.; Maile, Nagesh C.; Yadav, Hemraj M.; Ghodake, Gajanan S.; Jagadale, Ajay D.; Kim, Dae-Young | Dongguk Univ, Coll Life Sci & Biotechnol, Dept Biol & Environm Sci, Biomed Campus,32 Dongguk Ro, Goyang Si 10326, Gyeonggi Do, South Korea; Yonsei Univ, Dept Chem & Biomol Engn, Electrochem Energy Lab, Seoul, South Korea; Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; SASTRA Deemed Univ, Ctr Energy Storage & Convers, Sch Elect & Elect Engn, Thanjavur 613401, Tamil Nadu, India | Shinde, Santaji/LFT-9528-2024; Maile, Nagesh/AFD-8838-2022; Karade, Swapnil/AAA-8285-2020; Jagadale, Ajay/O-5253-2014 | 55776351000; 56674484600; 57193804539; 55389590800; 22979024500; 44161199800; 55742887400 | sbpkim@dongguk.edu; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 334 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 1.48 | 2025-07-30 | 19 | 22 | CuCo2O4; Thin films; Deep eutectic solvents; Nanograin; Specific capacity; Hybrid supercapacitor | NI FOAM; ADVANCED ELECTRODES; OPTICAL-PROPERTIES; COBALT OXIDE; CONTROLLABLE SYNTHESIS; ANNEALING TEMPERATURE; POSITIVE ELECTRODE; PERFORMANCE; NANOSHEETS; ARRAYS | CuCo<sub>2</sub>O<sub>4</sub>; Deep eutectic solvents; Hybrid supercapacitor; Nanograin; Specific capacity; Thin films | Annealing; Cobalt compounds; Copper compounds; Cost effectiveness; Eutectics; Nanostructured materials; Solvents; Supercapacitor; Transition metal oxides; Transition metals; Deep eutectic solvents; Energy; Green synthesis; Hybrid supercapacitors; Nano grains; Property; Specific capacities; Synthesised; Thin-films; Transition-metal oxides; Thin films | English | 2021 | 2021-07-15 | 10.1016/j.molliq.2021.116390 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Hierarchical CoTiO3 microrods on Ti3C2Tx MXene heterostructure as an efficient sonocatalyst for bisphenol A degradation | One-dimensional CoTiO3 microrods decorated on two-dimensional layered MXene nanosheets (CoT@MX) were synthesized via a facile liquid self-assembly method for use in bisphenol A (BPA) degradation. Different characterization techniques were adopted to investigate their structure, chemical state, morphology, and optical properties. The results revealed that the CoT@MX heterostructure was successfully fabricated with strong interface contact and an intimate interaction between CoTiO3 and MXene, which significantly boosted the sonocatalytic activity compared to that of sole CoTiO3 and MXene. In particular, the CoT@MX (1:0.5) nanocomposite displayed an excellent sonocatalytic performance, and its removal efficiency for BPA was 96.9% within 90 min. The influence of various reaction factors, including the catalyst dosage, initial concentration of BPA, operational pH, ultrasonic power, water matrix, and effects of coexisting ions, during BPA degradation was investigated systemically. The MXene nanosheets could provide new surface-active sites, which were conducive to the interaction between the catalyst and BPA pollutant molecules. Furthermore, the quenching tests and electron spin resonance analysis revealed that (OH)-O-center dot and O2(center dot) jointly contributed to BPA degradation. Finally, the feasible sonocatalytic reaction mechanism of CoT@MX was elucidated. (C) 2021 Elsevier B.V. All rights reserved. | Saravanakumar, Karunamoorthy; Fayyaz, Aqsa; Park, Soyoung; Yoon, Yeomin; Kim, Young Mo; Park, Chang Min | Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea; Univ South Carolina, Dept Civil & Environm Engn, 300 Main St, Columbia, SC 29208 USA; Hanyang Univ, Dept Civil & Environm Engn, Seoul 04763, South Korea | Karunamoorthy, Saravanakumar/Q-2005-2016; Kim, Young Mo/HKF-1374-2023; Park, Chang Min/CAA-8506-2022; Yoon, Yeomin/KDP-2253-2024 | 57223020778; 57217157699; 58180532500; 7402126688; 57202258703; 57209588953 | soyng7818@naver.com;yoony@cec.sc.edu;youngmo@hanyang.ac.kr;cmpark@knu.ac.kr; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 344 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 2.79 | 2025-07-30 | 39 | 40 | CoTiO3@MXene; Sonocatalyst; Ultrasonic vibration; Bisphenol A degradation | SONOPHOTOCATALYTIC DEGRADATION; HETEROJUNCTION; NANOCOMPOSITE; PARTICLES; DYE; NANOPARTICLES; PERFORMANCE; COMPOSITE | Bisphenol A degradation; CoTiO<sub>3</sub>@MXene; Sonocatalyst; Ultrasonic vibration | Catalyst activity; Magnetic moments; Morphology; Nanosheets; Optical properties; Phenols; Ultrasonic waves; Bisphenol A; Bisphenol A degradation; Bisphenols-A; CoTiO3@mxene; Microrods; One-dimensional; Sonocatalyst; Sonocatalytic; Ultrasonic-vibration; ]+ catalyst; Titanium compounds | English | 2021 | 2021-12-15 | 10.1016/j.molliq.2021.117740 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Numerical modeling for steady-state nanofluid free convection involving radiation through a wavy cavity with Lorentz forces | In this research, steady-state magnetized nanofluid flow under radiative wavy cavity is demonstarted. The porosity term is modeled by employing the non-Darcy's theory of porosity. The working nanofluid is based on water-Al2O3 type nano-powder with the concnetration of 4%. The numerical modeling is estimated via control volume finite element (CVFE) technique. The results against the distinct emerging constraints namely magnetic force, Rayleigh number, porosity factor, shape factors, and shape of nanoparticles values on flow streamlines, average Nusselt number (Nu(avg)) and isotherms are sketched and reported indetail. The sequence of radition on nanoraticles is discussed by considering distinct nanoparticles forms. The results show that the fluid advection decays with the enhancing trend of the media porosity and the phenomenon of conduction dominates over the process of convection. The nanoparticle shape insignificantly influences the Nu(avg) for incrementing trend of magnetic and buoyancy forces. (C) 2021 Elsevier B.V. All rights reserved. | Nong, Honghe; Fatah, Abdulnasser Mahmood; Shehzad, S. A.; Ambreen, T.; Selim, Mahmoud M.; Albadarin, Ahmad B. | Guangxi Univ, Coll Civil Engn & Architecture, 100 Univ Rd, Nanning 530004, Guangxi, Peoples R China; Knowledge Univ, Coll Engn, Dept Petr Engn, Erbil, Kurdistan Regio, Iraq; COMSATS Univ Islamabad, Dept Math, Sahiwal 57000, Pakistan; Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea; Prince Sattam Bin Abdulaziz Univ, Al Aflaj Coll Sci & Humanities Studies, Dept Math, Al Aflaj 71011912, Saudi Arabia; Suez Univ, Suez Fac Sci, Dept Math, Suez, Egypt; Ton Duc Thang Univ, Lab Theoret & Computat Biophys, Ho Chi Minh City, Vietnam; Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City, Vietnam | Fatah, Abdul Nasser/AAB-8942-2022; Selim, Mahmoud/AHE-4865-2022; Shehzad, Sabir/J-3885-2014 | 57215545281; 57223321272; 42262831200; 57195420431; 56697933400; 36679849200 | ahmad.albadarin@tdtu.edu.vn; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 336 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 1.31 | 2025-07-30 | 19 | 19 | Convective flow; Radiation; Nanoparticle; CVFEM; non-Darcy; Hartmann number | CU-WATER NANOFLUID; QUANTITY LUBRICATION; NATURAL-CONVECTION; AL2O3-WATER NANOFLUID; THERMAL-CONDUCTIVITY; ENTROPY GENERATION; HEAT-TRANSFER; POROUS-MEDIUM; MHD; FLOW | Convective flow; CVFEM; Hartmann number; Nanoparticle; non-Darcy; Radiation | Alumina; Aluminum oxide; Flow of fluids; Heat convection; Heat radiation; Nanomagnetics; Nanoparticles; Numerical models; Porosity; Convective flow; CVFEM; Hartmann numbers; Lorentz; Magnetic force; Nanofluid flow; Nanofluids; Non-Darcy; Steady state; Wavy cavity; Nanofluidics | English | 2021 | 2021-08-15 | 10.1016/j.molliq.2021.116324 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Numerical study based on CVFEM for nanofluid radiation and magnetized natural convected heat transportation | In this manuscript, steady naturally convected nanofluid flow involving thermal radiation has been simulated by involving the inclined magnetic field. Aluminum-oxide nanoparticles are submerged into ordinary electrically conducting H2O. Radiative phenomenon along with distinct nanoparticles shapes is executed. The problem is formulated with the help of basic principles of fluid mechanics and the code is designed for achieving problem solutions. The nature of radiated constraint, Rayleigh number, nanoparticles' shape and magnetic field on nanofluid is labeled and discussed for distinct important quantities. Results revealed that the conduction process is significant mode of heat transportation for higher Darcy factor. The magnetic field utilization obstructs the flow circulation stimulated by the temperature gradient induced buoyancy force. (C) 2021 Elsevier B.V. All rights reserved. | Rana, Puneet; Shehzad, S. A.; Ambreen, T.; Selim, Mahmoud M. | Wenzhou Kean Univ, Coll Sci & Technol, Sch Math Sci, Wenzhou 325060, Peoples R China; COMSATS Univ Islamabad, Dept Math, Sahiwal 57000, Pakistan; Kyungpook Natl Univ, Sch Mech Engn, Daegu 41566, South Korea; Prince Sattam bin Abdulaziz Univ, Al Aflaj Coll Sci & Humanities Studies, Dept Math, Al Aflaj 71011912, Saudi Arabia; Suez Univ, Suez Fac Sci, Dept Math, Suez, Suez Governorat, Egypt | ; Rana, Puneet/AAW-1502-2020; Shehzad, Sabir/J-3885-2014; Selim, Mahmoud/AHE-4865-2022 | 37102681500; 42262831200; 57195420431; 56697933400 | prana@kean.edu; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 334 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 1.64 | 2025-07-30 | 23 | 22 | Nanoparticle; Heat transfer; Radiation; Porous cavity; Hartmann number | QUANTITY LUBRICATION; ENTROPY GENERATION; WATER; FERROFLUIDS; PERFORMANCE; MECHANISM; ENERGY; CAVITY; FLOW | Hartmann number; Heat transfer; Nanoparticle; Porous cavity; Radiation | Alumina; Aluminum oxide; Fluid mechanics; Heat radiation; Magnetic fields; Nanofluidics; Aluminum oxide nanoparticles; Hartmann numbers; Heat transportation; Inclined magnetic fields; Magnetic-field; Nanofluid flow; Nanofluids; Nanoparticle shape; Porous cavities; Thermal; Nanoparticles | English | 2021 | 2021-07-15 | 10.1016/j.molliq.2021.116102 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Potential use of ground brown rice for weanling pigs | The purpose of the current study was to assess the effects of substituting corn with ground brown rice on growth performance, immune status, and gut microbiota in weanling pigs. Seventy-two weanling pigs (28 d old with 6.78 +/- 0.94 kg body weight [BW]) were randomly allotted to two dietary treatments with six pens and six pigs (three barrows and gilts) per pen within a randomized complete block design. The control pigs were fed a typical diet for weanling pigs based on corn and soybean meal diet (control diet: CON), and the other pigs were fed a formulated diet with 100% replacement of corn with ground brown rice for 35d (treatment diet: GBR). Growth performance, immune status, and gut microbiota of weanling pigs were measured. The substitution of corn with GBR did not affect growth performance or diarrhea frequency. Additionally, there were no differences in white blood cell number, hematocrit, cortisol, C-reactive protein, and serum tumor necrosis factor-alpha levels between pigs fed CON or GBR for the first 2 wk after weaning. However, weanling pigs fed GBR had lower (P < 0.05) serum transforming growth factor-beta 1 level than those fed CON. Furthermore, weanling pigs fed GBR had increased (P < 0.05) relative abundance of phylum Firmicutes and genus Lactobacillus and Streptococcus and decreased (P < 0.05) relative abundance of phylum Bacteroidetes and genus Clostridium and Prevotella in the gut microbiota compared with those fed CON. In conclusion, there was no significant difference in growth performance when corn was replaced with ground brown rice in diets for weanling pigs. Furthermore, the substitution of corn with ground brown rice in weaning diet modulated immune status and gut microbiota of pigs by increasing beneficial microbial communities and reducing harmful microbial communities. Overall, ground brown rice-based diet is a potential alternative to corn-based diet without negative effects on growth performance, immune status, and gut microbiota changes of weanling pigs. | Lee, Jeong Jae; Kim, Sheena; Cho, Jin Ho; Kyoung, Hyunjin; Lee, Seonmin; Choe, Jeehwan; Liu, Yanhong; Ji, Peng; Xiong, Xia; Kim, Younghoon; Kim, Hyeun Bum; Song, Minho | Kyungpook Natl Univ, Inst Agr Sci & Technol, Daegu 41566, South Korea; Dankook Univ, Dept Anim Resources Sci, Cheonan 31116, South Korea; Chungbuk Natl Univ, Div Food & Anim Sci, Cheongju 28644, South Korea; Chungnam Natl Univ, Div Anim & Dairy Sci, Daejeon 34134, South Korea; Korea Natl Coll Agr & Fisheries, Dept Beef Sci, Jeonju 54874, South Korea; Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA; Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA; Chinese Acad Sci, Hunan Prov Engn Res Ctr Hlth Livestock, Inst Subtrop Agr,Minist Agr,Sci Observing & Expt, Key Lab Agroecol Proc Subtrop Reg,Lab Anim Nutr P, Changsha 410125, Hunan, Peoples R China; Seoul Natl Univ, Dept Agr Biotechnol, Seoul 08826, South Korea; Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul 08826, South Korea | Kim, Hansu/F-5909-2013 | 55915465100; 56692184400; 35228467000; 57213620137; 57211440357; 26631522600; 7410214744; 55426308800; 55448285900; 57861979600; 55784908300; 57200569587 | mhsong@cnu.ac.kr; | JOURNAL OF ANIMAL SCIENCE | J ANIM SCI | 0021-8812 | 1525-3163 | 99 | 10 | SCIE | AGRICULTURE, DAIRY & ANIMAL SCIENCE | 2021 | 3.338 | 15.3 | 0.48 | 2025-07-30 | 6 | 7 | ground brown rice; growth performance; gut microbiota; immune status; weanling pigs | IMPROVES GROWTH-PERFORMANCE; NUTRIENT DIGESTIBILITY; DIETARY PROTEASE; PRODUCTIVE PERFORMANCE; IMMUNE-RESPONSES; SUPPLEMENTATION; EXTRACTION; INCLUSION; STARCH; MAIZE | ground brown rice; growth performance; gut microbiota; immune status; weanling pigs | Animal Feed; Animal Nutritional Physiological Phenomena; Animals; Diet; Oryza; Random Allocation; Soybeans; Sus scrofa; Swine; Weaning; animal; animal food; diet; Oryza; pig; randomization; soybean; veterinary medicine; weaning | English | 2021 | 2021-10 | 10.1093/jas/skab267 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
○ | ○ | Article | Protective Role of Limitrin in Experimental Autoimmune Optic Neuritis | PURPOSE. This study investigated the role of limitrin in the pathogenesis of demyelinating optic neuritis using an experimental autoimmune optic neuritis (EAON) model. METHODS. EAON was induced in mice via subcutaneous injection with myelin oligodendrocyte glycoprotein peptide. Limitrin protein and mRNA expression were examined in the optic nerve before and after EAON induction. Proinflammatory cytokine expression profiles and degree of glial activation were compared between wild-type (WT) and limitrin knockout mice by real-time PCR and histologic analysis, respectively, after EAON induction. Plasma limitrin levels in patients with optic neuritis and healthy controls were measured by ELISA. RESULTS. Limitrin expression, observed in astrocytes in the optic nerve of WT mice, was lower in EAON-induced than in naive WT mice. A comparative analysis of WT and limitrin knockout mice revealed that limitrin deficiency induced more severe neuroinflammation and glial hyperactivation in the optic nerve after EAON induction. Limitrin-deficient astrocytes were more chemotactically responsive to neuroinflammatory stimulation than WT astrocytes. Patients with optic neuritis demonstrated higher plasma limitrin levels than healthy controls (P = 0.0001), which was negatively correlated with visual acuity at the nadir of the optic neuritis attack (r = 0.46, P = 0.036). CONCLUSIONS. Limitrin deficiency induced severe neuroinflammation and reactive gliosis in the optic nerve after EAON induction. Our results imply that astrocyte-derived limitrin may protect against neuroinflammation by decreasing immune cell infiltration into the optic nerve. The plasma limitrin level may reflect the extent of blood-brain barrier disruption and provide a valuable biomarker reflecting the severity of optic neuritis. | Chun, Bo Young; Kim, Jong-Heon; Jung, Youn-Kwan; Choi, Yoon Seok; Kim, Gunwoo; Yonezawa, Tomoko; Suk, Kyoungho | Kyungpook Natl Univ, Sch Med, Dept Ophthalmol, Daegu, South Korea; Kyungpook Natl Univ, Brain Sci & Engn Inst, Sch Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pharmacol, Daegu, South Korea; Gyeongsang Natl Univ Hosp, Biomed Res Inst, Jinju, South Korea; Fatima Hosp, Fatima Res Inst, Daegu, South Korea; Okayama Univ, Gradulate Sch Med Dent & Pharmaceut Sci, Okayama, Japan | 25644902100; 57203324811; 9636963300; 57226079827; 59040047100; 7202126124; 7005114595 | byjun424@hotmail.com; | INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE | INVEST OPHTH VIS SCI | 0146-0404 | 1552-5783 | 62 | 9 | SCIE | OPHTHALMOLOGY | 2021 | 4.925 | 15.3 | 0.35 | 2025-07-30 | 3 | 4 | astrocytes; blood-brain barrier; demyelinating optic neuritis; limitrin; neuroinflammation | BLOOD-BRAIN-BARRIER; MULTIPLE-SCLEROSIS; AXONAL-INJURY; DISRUPTION; PROLIFERATION; DEMYELINATION; PERMEABILITY; RECRUITMENT; INVOLVEMENT; ACTIVATION | Astrocytes; Blood-brain barrier; Demyelinating optic neuritis; Limitrin; Neuroinflammation | Adult; Animals; Animals, Newborn; Disease Models, Animal; Enzyme-Linked Immunosorbent Assay; Female; Gene Expression Regulation; Humans; Immunoglobulins; Male; Membrane Proteins; Mice; Mice, Inbred C57BL; Mice, Knockout; Neuritis, Autoimmune, Experimental; Optic Nerve; Optic Neuritis; Retrospective Studies; RNA; biological marker; cytokine; dimethyl sulfoxide; eosin; ether; formazan; Freund adjuvant; hematoxylin; interleukin 1beta; limitrin; myelin oligodendrocyte glycoprotein; nitric oxide; octamer transcription factor; paraformaldehyde; penicillin derivative; pertussis toxin; phosphate buffered saline; protein; streptomycin; tumor necrosis factor; unclassified drug; immunoglobulin; membrane protein; Mxra8 protein, mouse; RNA; afferent pupillary defect; animal cell; animal experiment; animal model; animal tissue; Article; astrocyte; autoimmune disease; blood brain barrier; blood sampling; cell activation; cell culture; cell infiltration; cell viability; cell viability assay; comparative study; controlled study; demyelination; disease severity; drug blood level; drug deficiency; enzyme linked immunosorbent assay; experimental autoimmune neuritis; female; fluorescence intensity; gene expression; glia cell; gliosis; histology; image analysis; immunization; immunocompetent cell; immunocytochemistry; immunofluorescence; immunohistochemistry; inguinal lymph node; knockout mouse; light dark cycle; male; microglia; mouse; mRNA expression level; MTT assay; Mycobacterium tuberculosis; myelooptic neuropathy; nervous system inflammation; nervous tissue; nonhuman; optic nerve; optic neuritis; paralysis; pathogenesis; protein blood level; protein expression; real time polymerase chain reaction; RNA extraction; visual acuity; visual field defect; adult; animal; biosynthesis; C57BL mouse; disease model; gene expression regulation; genetics; human; metabolism; newborn; optic neuritis; pathology; retrospective study | English | 2021 | 2021-07 | 10.1167/iovs.62.9.8 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Role of L-arginine on the formation and breakdown of passive film onto the steel rebars surface in chloride contaminated concrete pore solution | In the present study, different amounts of L-arginine (LA) i.e. Zwitterion have been used as an ecofriendly corrosion inhibitor to study its effect on the mitigation of the steel rebars corrosion in 0.17 M NaCl added simulated concrete pore (SP) solution. Potentiodynamic polarization, open circuit potential (OCP), and electrochemical impedance spectroscopy (EIS) have been used to understand the corrosion kinetics and mechanism for the formation of passive film at steel rebar/solution interface with exposure periods. The characterization of passive films after 144 h of exposures were performed by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Cl- ions help in the formation of Zwitterion-(Cl)-Fe complex in the presence of LA containing solution which led to stabilize the passive film resulting improvement in polarization resistance (R-p). The steel rebar exposed to 0.115 M LA containing SP + 0.17 M NaCl solution exhibited around 96% inhibition efficiency after 144 h of exposure. Raman spectroscopy of passive film reveals adsorption of LA and formation of goethite and maghemite. A schematic has been proposed to derive the adsorption mechanism of LA in the presence of Cl- ions and form Zwitterion-(Cl)-Fe complex, therefore, enhanced corrosion resistance was observed. (C) 2021 Elsevier B.V. All rights reserved. | Singh, Jitendra Kumar; Yang, Hyun-Min; Lee, Han-Seung; Mandal, Soumen; Aslam, Fahid; Alyousef, Rayed | Hanyang Univ, Innovat Durable Bldg & Infrastruct Res Ctr, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea; Hanyang Univ, Dept Architectural Engn, 55 Hanyangdaehak Ro, Ansan 15588, Gyeonggi Do, South Korea; Kyungpook Natl Univ, Intelligent Construct Automat Ctr, 80 Daehak Ro, Daegu 41566, South Korea; Prince Sattam Bin Abdul Aziz Univ, Coll Engn, Civil Engn Dept, Al Kharaj 11942, Saudi Arabia | Aslam, Fahid/AAG-4938-2020; Mandal, Soumen/AAB-3917-2021; Singh, Jitendra/AAU-6579-2021; Alyousef, Rayed/AAD-5876-2020; Lee, Han-Seung/E-9087-2013 | 57197846307; 56097115000; 57956643400; 57214752240; 55629788200; 56554240700 | ercleehs@hanyang.ac.kr;sou.chm@gmail.com; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 337 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 1.31 | 2025-07-30 | 17 | 18 | Steel rebar; Concrete pore solution; Passive film; Corrosion; Electrochemical impedance spectroscopy; Raman spectroscopy | CU-NI ALLOYS; SATURATED CA(OH)(2) SOLUTION; CORROSION-INHIBITOR; CARBON-STEEL; SIMULATED CONCRETE; REINFORCED-CONCRETE; CALCIUM NITRITE; AMINO-ACIDS; MILD-STEEL; ELECTROCHEMICAL-BEHAVIOR | Concrete pore solution; Corrosion; Electrochemical impedance spectroscopy; Passive film; Raman spectroscopy; Steel rebar | Arginine; Concretes; Corrosion resistance; Electrochemical corrosion; Electrochemical impedance spectroscopy; Iron compounds; Polarization; Positive ions; Scanning electron microscopy; Sodium chloride; Steel corrosion; X ray photoelectron spectroscopy; Chloride-contaminated concretes; Cl- ions; Concrete pore solutions; Eco-friendly; Electrochemical-impedance spectroscopies; Fe complexes; L-Arginine; Passive films; Rebar corrosion; Steel rebars; Raman spectroscopy | English | 2021 | 2021-09-01 | 10.1016/j.molliq.2021.116454 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Transparent UV-blocking photonic film based on reflection of cholesteric liquid crystals | An optically transparent bilayer cholesteric liquid crystal (CLC) solid film capable of almost completely rejecting ultraviolet (UV)-A light was fabricated with a bilayer CLC film comprising double handed CLC layers using UV-curing reactive mesogen mixtures (RMMs) doped with LC756 and S811. The concentrations of S811 and LC756 in RMMs and the film thickness were optimized to achieve more than 98% UV blocking (in the UV-A region) and more than 95% transparency (in the visible region). The proposed approach provides a simple and reliable fabrication process that can be employed in practical applications such as smart windows, eyeglasses, and lenses. (C) 2021 Elsevier B.V. All rights reserved. | Hong, Hyo-Jin; Nasrollahi, Aboozar; Park, Soo-Young | Kyungpook Natl Univ, Sch Appl Chem Engn, Polymer Nanomat Lab, Daegu 41566, South Korea | park, soo-young/N-3170-2017 | 57287032600; 56133137000; 57194041850 | psy@knu.ac.kr; | JOURNAL OF MOLECULAR LIQUIDS | J MOL LIQ | 0167-7322 | 1873-3166 | 344 | SCIE | CHEMISTRY, PHYSICAL;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2021 | 6.633 | 15.3 | 0.74 | 2025-07-30 | 11 | 10 | Cholesteric liquid crystal; UV-blocking; Bilayer film; Hyper reflection; UV blocking; Photonic crystal; Reactive mesogen | PHASE RETARDATION; BRAGG REFLECTION; WAVELENGTH; PROTECTION; CHIRALITY | Bilayer film; Cholesteric liquid crystal; Hyper reflection; Photonic crystal; Reactive mesogen; UV blocking; UV-blocking | Curing; Optical Kerr effect; Photonic crystals; Bi-layer; Bi-layer films; Blockings; Cholesteric liquid-crystal; Hyper reflection; Photonic films; Reactive mesogens; Ultraviolet blocking; Ultraviolet-blocking; Cholesteric liquid crystals | English | 2021 | 2021-12-15 | 10.1016/j.molliq.2021.117739 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Planetary Boundary-Layer Structure at an Inland Urban Site under Sea Breeze Penetration | We evaluated the performance of the Weather Research and Forecasting Model in simulating the boundary-layer structure at an urban site in Seoul on two clear summer days against observations made using a ceilometer, a Doppler wind lidar, and a microwave radiometer. The planetary boundary-layer height (PBLH) was estimated from two different methods using observations: the ceilometer-based method (CBM) and bulk Richardson number method (BRM). The maximum PBLH was well captured by the model but PBLH was underestimated in the late afternoon and evening. To examine the cause for underestimation of PBLH in the evening, we compared the wind and virtual potential temperature structure between the simulation and observations. The model captured the timing of the sea breeze well, but it considerably overestimated the intensity of the simulated sea breeze, resulting in an overestimated cold advection by a sea breeze. The effect of the overestimated cold advection on evening PBLH was greater when the sea breeze arrived in the late afternoon and hence the vertical extent of the sea breeze was shallow. This study underscores the importance of accurately simulating the sea breeze for PBLH prediction in the evening, over the inland urban areas under sea breeze penetration. | Lee, Young-Hee; Park, Moon-Soo; Choi, Yuna | Kyungpook Natl Univ, Dept Astron & Atmospher Sci, 80 Daehakro, Daegu 41566, South Korea; Sejong Univ, Dept Climate & Environm, Seoul, South Korea | 56812706200; 55730437500; 57221762910 | young@knu.ac.kr; | ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES | ASIA-PAC J ATMOS SCI | 1976-7633 | 1976-7951 | 57 | 4 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2021 | 6.623 | 15.4 | 0.3 | 2025-07-30 | 6 | 6 | Ceilometer; Microwave radiometer; Sea breeze; Urban boundary layer; Weather research and forecasting model | SEOUL METROPOLITAN-AREA; MICROWAVE RADIOMETER; ATMOSPHERIC CONTROLS; MIXING HEIGHT; LIDAR; TEMPERATURE; MODEL; RETRIEVALS; PROFILES; DYNAMICS | Ceilometer; Microwave radiometer; Sea breeze; Urban boundary layer; Weather research and forecasting model | English | 2021 | 2021-11 | 10.1007/s13143-020-00222-1 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
○ | ○ | Article | Spatial Interpolation of Gauge Measured Rainfall Using Compressed Sensing | In this work, we suggest new spatial precipitation interpolation schemes using compressed sensing (CS), which is a new framework for signal acquisition and smart sensor design. Using CS, the precipitation maps are recovered in high resolution by obtaining sparse coefficients of radial basis functions(RBFs). Two types of methods are designed according to the construction methods of CS matrix. In the first type, the CS matrix is derived as the product of an m x n (n >> m) weights matrix of inverse distance weighting (IDW) and an n x n radial basis function (RBF) matrix. The second type of CS matrix consists of an m x n RBF matrix that depends on a few observation vectors and a number of n unknown vectors. The advantage of the proposed CS methods is that it can be represented at a high resolution because it is interpolated based on a large number of bases (or degrees of freedom). This prevents the variance value from being much smaller than the actual value due to interpolation using a few observation scales. To test our CS interpolation schemes, interpolation results were compared with IDW, Ordinary Kriging (OK) and RBF interpolation methods for analytic test function and some actual rainfall data. In the case of an analytic test function, when the proposed method is compared at high resolution, the error from the true value is the smallest. In real rainfall data, comparison with real values is not possible at high resolutions, but the error with the observed data is the smallest in terms of 'spatial variogram'. In addition, the proposed CS method generates hight resolution data from rainfall cases, showing promising results when identifying peaks. | Ryu, Soorok; Song, Joon Jin; Kim, Yongku; Jung, Sung-Hwa; Do, Younghae; Lee, GyuWon | Kyungpook Natl Univ, Ctr Atmospher REmote Sensing CARE, Daegu 41566, South Korea; Baylor Univ, Dept Stat Sci, Waco, TX 76798 USA; Kyungpook Natl Univ, Dept Stat, Daegu 41566, South Korea; Korea Meteorol Adm, Weather Radar Ctr, Seoul, South Korea; Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea; Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Daegu 41566, South Korea | Do, Younghae/G-3522-2011 | 35759778300; 14062434200; 47962102500; 55837204300; 7103101109; 7404852271 | gyuwon@knu.ac.kr; | ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES | ASIA-PAC J ATMOS SCI | 1976-7633 | 1976-7951 | 57 | 2 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2021 | 6.623 | 15.4 | 1.5 | 2025-07-30 | 21 | 21 | Compressed sensing; Inverse distance weights; Ordinary Kriging; Precipitation interpolation; Radial basis function | ELEVATION; PRECIPITATION; EVERGLADES | Compressed sensing; Inverse distance weights; Ordinary Kriging; Precipitation interpolation; Radial basis function | English | 2021 | 2021-05 | 10.1007/s13143-020-00200-7 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Status Of Dysphagia After Ischemic Stroke: A Korean Nationwide Study | Objective: To identify the incidence of dysphagia after ischemic stroke and determine factors affecting the presence of dysphagia. Design: Retrospective case-control study. This was an interim analysis of a prospective multicenter Korean stroke cohort. Setting: Acute care university hospitals. Participants: Patients (N=6000) with first-ever acute ischemic stroke. Patients were divided into 2 groups according to the presence or absence of dysphagia confirmed at 7 days after onset using the American Speech-Language-Hearing Association National Outcomes Measurement System (ASHA-NOMS) scale, which was determined after conducting screening or standardized tests. Interventions: Not applicable. Main Outcome Measures: Age at stroke onset, body mass index (BMI), premorbid modified Rankin Scale (mRS), brainstem lesions, National Institutes of Health Stroke Scale (NIHSS), poststroke mRS, and ASHA-NOMS swallowing level at poststroke day 7 were evaluated. Results: Among patients with ischemic stroke, 32.3% (n=1940) had dysphagia at 7 days after stroke onset. At discharge, 80.5% (n=1561) still had dysphagia. The prediction model for the presence of dysphagia identified age at onset, underweight (BMI <18.5 kg/m(2)), premorbid mRS, brain- stem lesions, and NIHSS as independent predictors. The odds ratio (OR) for the presence of dysphagia significantly increased with underweight (OR, 1.6684; 95% confidence interval [CI], 1.27-2.20), increased age at onset (OR, 1.0318; 95% CI, 1.03-1.04), premorbid mRS (OR, 1.1832; 95% CI, 1.13-1.24), brainstem lesions (OR, 1.6494; 95% CI, 1.39-1.96), and NIHSS (OR, 1.2073; 95% CI, 1.19-1.23). Conclusions: The incidence of dysphagia after ischemic stroke was 32.3%. The prediction model for the presence of dysphagia identified age, low BMI, premorbid disabilities, brainstem lesions, and NIHSS as predictive factors. (C) 2021 The American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved. | Ko, Nayeon; Lee, Hyun Haeng; Sohn, Min Kyun; Kim, Deog Young; Shin, Yong-Il; Oh, Gyung-Jae; Lee, Yang-Soo; Joo, Min Cheol; Lee, So Young; Song, Min-Keun; Han, Junhee; Ahn, Jeonghoon; Lee, Young-Hoon; Chang, Won Hyuk; Choi, Soo Mi; Lee, Seon Kui; Lee, Jongmin; Kim, Yun-Hee | Konkuk Univ, Dept Rehabil Med, Sch Med, 120-1 Neungdong Ro, Seoul 05030, South Korea; Chungnam Natl Univ, Sch Med, Dept Rehabil Med, Daejeon, South Korea; Yonsei Univ, Dept & Res Inst Rehabil Med, Coll Med, Seoul, South Korea; Pusan Natl Univ, Sch Med, Dept Rehabil Med, Yangsan Hosp, Yangsan, South Korea; Wonkwang Univ, Sch Med, Dept Prevent Med, Iksan, South Korea; Kyungpook Natl Univ, Kyungpook Natl Univ Hosp, Dept Rehabil Med, Sch Med, Daegu, South Korea; Wonkwang Univ, Dept Rehabil Med, Sch Med, Iksan, South Korea; Jeju Natl Univ, Jeju Natl Univ Hosp, Dept Rehabil Med, Sch Med, Jeju, South Korea; Chonnam Natl Univ, Dept Phys & Rehabil Med, Med Sch, Gwangju, South Korea; Hallym Univ, Dept Stat, Chunchon, South Korea; Ewha Womans Univ, Dept Hlth Convergence, Seoul, South Korea; Sungkyunkwan Univ, Samsung Med Ctr, Sch Med, Dept Phys & Rehabil Med,Heart Vasc Stroke Inst,Ct, Seoul, South Korea; Korea Ctr Dis Control & Prevent, Ctr Dis, Div Chron Dis Prevent, Cheongju, South Korea; Sungkyunkwan Univ, Dept Med Device Management & Res, Dept Digital Healthcare, Dept Hlth Sci & Technol,SAIHST, Seoul, South Korea | ; Ahn, Jeonghoon/CAA-1956-2022; kim, deog young/Q-8498-2019; Kim, Yun-Hee/GVS-6426-2022; Lee, Jongmin/Q-4909-2019 | 57226689941; 57221571161; 7101840459; 55375583000; 55890990500; 7007056685; 57202952463; 56982599700; 57202327370; 55375416600; 57192890252; 8855402200; 55716155400; 35301717900; 57253230100; 57216396953; 57202882113; 57020121600 | leej@kuh.ac.kr;yun1225.kim@samsung.com; | ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION | ARCH PHYS MED REHAB | 0003-9993 | 1532-821X | 102 | 12 | SCIE | REHABILITATION;SPORT SCIENCES | 2021 | 4.06 | 15.4 | 2.54 | 2025-07-30 | 26 | 24 | Deglutition disorders; Rehabilitation; Stroke | BODY-MASS INDEX; MALNUTRITION; SARCOPENIA; SCALE; RELIABILITY; PREVALENCE; GUIDELINES; ASPIRATION; PREDICTOR; PNEUMONIA | Deglutition disorders; Rehabilitation; Stroke | Aged; Cohort Studies; Deglutition Disorders; Disability Evaluation; Female; Humans; Incidence; Ischemic Stroke; Male; Middle Aged; Prospective Studies; Recovery of Function; Republic of Korea; Retrospective Studies; Risk Factors; Surveys and Questionnaires; acute ischemic stroke; adult; Article; body mass; brain stem; case control study; Charlson Comorbidity Index; cohort analysis; computer language; controlled study; dysphagia; female; human; major clinical study; male; medical society; Mini Mental State Examination; National Institutes of Health Stroke Scale; nose feeding; onset age; practice guideline; prospective study; Rankin scale; retrospective study; underweight; World Health Organization; aged; brain ischemia; clinical trial; complication; convalescence; disability; dysphagia; incidence; middle aged; multicenter study; questionnaire; risk factor; South Korea | English | 2021 | 2021-12 | 10.1016/j.apmr.2021.07.788 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
○ | ○ | Article | The Influence of Atmospheric Composition on Polarization in the GEMS Spectral Region | Sunlight is unpolarized when it enters the Earth's atmosphere, and becomes polarized when interacting with atmospheric constituents. In the present study, the polarization state of ultraviolet-visible light in the spectral region (300-500 nm) of the Geostationary Environmental Monitoring Spectrometer (GEMS) is analyzed using the Vector Linearized Discrete Ordinate Radiative-Transfer (VLIDORT) model. The results indicate that the polarization characteristics of scattered solar light emerging from the atmosphere and observed in space vary with the amount of absorbing gases and aerosols, and with the presence or absence of clouds in the atmosphere. The degree of linear polarization (DOLP), which is related to the scattering angle of the light, is highly affected by the viewing geometry of the sun and satellite. Aerosols and clouds curtail the degree of polarization that is caused by Rayleigh scattering. The results of the model simulation for actual atmospheric conditions are assessed by comparing the Stokes fraction, i.e. the ratio of the linearly-polarized component to the total intensity, as observed from the polarization-measurement device (PMD) of the Global Ozone Monitoring Experiment-2 (GOME-2). The simulated Stokes fractions are found to be in very good agreement with the PMD observations for clear-sky regions, although some discrepancies are observed for regions with optically thin clouds. | Choi, Haklim; Lee, Kwang-Mog; Seo, Jongjin; Bae, Juyeon | Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Daegu, South Korea; Univ Wisconsin, Dept Atmospher & Ocean Sci, Madison, WI USA; Univ Bremen, Inst Environm Phys, Bremen, Germany | 57215186877; 35412373800; 57218563229; 57218562663 | kmlee@knu.ac.kr; | ASIA-PACIFIC JOURNAL OF ATMOSPHERIC SCIENCES | ASIA-PAC J ATMOS SCI | 1976-7633 | 1976-7951 | 57 | 3 | SCIE | METEOROLOGY & ATMOSPHERIC SCIENCES | 2021 | 6.623 | 15.4 | 0.53 | 2025-07-30 | 10 | 7 | Polarization of light; GEMS; Linear polarization; Vector radiative transfer model; Rayleigh scattering | RADIATIVE-TRANSFER MODEL; ABSORPTION CROSS-SECTIONS; OZONE UV SPECTROSCOPY; MULTIPLE-SCATTERING; RAYLEIGH-SCATTERING; TRANSFER CODE; SURFACE; RETRIEVAL; LIGHT; REFLECTIVITY | GEMS; Linear polarization; Polarization of light; Rayleigh scattering; Vector radiative transfer model | English | 2021 | 2021-08 | 10.1007/s13143-020-00218-x | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
○ | ○ | Article | Transcriptomic, Protein-DNA Interaction, and Metabolomic Studies of VosA, VelB, and WetA in Aspergillus nidulans Asexual Spores | In filamentous fungi, asexual development involves cellular differentiation and metabolic remodeling leading to the formation of intact asexual spores. The development of asexual spores (conidia) in Aspergillus is precisely coordinated by multiple transcription factors (TFs), including VosA, VelB, and WetA. Notably, these three TFs are essential for the structural and metabolic integrity, i.e., proper maturation, of conidia in the model fungus Aspergillus nidulans. To gain mechanistic insight into the complex regulatory and interdependent roles of these TFs in asexual sporogenesis, we carried out multi-omics studies on the transcriptome, protein-DNA interactions, and primary and secondary metabolism employing A. nidulans conidia. RNA sequencing and chromatin immunoprecipitation sequencing analyses have revealed that the three TFs directly or indirectly regulate the expression of genes associated with heterotrimeric G-protein signal transduction, mitogen-activated protein (MAP) kinases, spore wall formation and structural integrity, asexual development, and primary/secondary metabolism. In addition, metabolomics analyses of wild-type and individual mutant conidia indicate that these three TFs regulate a diverse array of primary metabolites, including those in the tricarboxylic acid (TCA) cycle, certain amino acids, and trehalose, and secondary metabolites such as sterigmatocystin, emericellamide, austinol, and dehydroaustinol. In summary, WetA, VosA, and VelB play interdependent, overlapping, and distinct roles in governing morphological development and primary/secondary metabolic remodeling in Aspergillus conidia, leading to the production of vital conidia suitable for fungal proliferation and dissemination. IMPORTANCE Filamentous fungi produce a vast number of asexual spores that act as efficient propagules. Due to their infectious and/or allergenic nature, fungal spores affect our daily life. Aspergillus species produce asexual spores called conidia; their formation involves morphological development and metabolic changes, and the associated regulatory systems are coordinated by multiple transcription factors (TFs). To understand the underlying global regulatory programs and cellular outcomes associated with conidium formation, genomic and metabolomic analyses were performed in the model fungus Aspergillus nidulans. Our results show that the fungus-specific WetA/VosA/VelB TFs govern the coordination of morphological and chemical developments during sporogenesis. The results of this study provide insights into the interdependent, overlapping, or distinct genetic regulatory networks necessary to produce intact asexual spores. The findings are relevant for other Aspergillus species such as the major human pathogen Aspergillus fumigatus and the aflatoxin producer Aspergillus flavus. | Wu, Ming-Yueh; Mead, Matthew E.; Lee, Mi-Kyung; Neuhaus, George F.; Adpressa, Donovon A.; Martien, Julia, I; Son, Ye-Eun; Moon, Heungyun; Amador-Noguez, Daniel; Han, Kap-Hoon; Rokas, Antonis; Loesgen, Sandra; Yu, Jae-Hyuk; Park, Hee-Soo | Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA; Vanderbilt Univ, Dept Biol Sci, 221 Kirkland Hall, Nashville, TN 37235 USA; Korea Res Inst Biosci & Biotechnol KRIBB, Biol Resource Ctr BRC, Jeongeup Si, South Korea; Oregon State Univ, Dept Chem, Gilbert Hall 153, Corvallis, OR 97331 USA; Univ Florida, Whitney Lab Marine Biosci, Gainesville, FL USA; Kyungpook Natl Univ, Sch Food Sci & Biotechnol, Daegu, South Korea; Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI USA; Woosuk Univ, Dept Pharmaceut Engn, Wonju, South Korea; Konkuk Univ, Dept Syst Biotechnol, Seoul, South Korea; Ginkgo Bioworks Inc, Boston, MA USA | Rokas, Antonis/A-9775-2008; Wu, Ming-Yueh/J-7199-2019; Yu, Jae-Hyuk/A-2343-2008; Park, Hee-Soo/AAC-6422-2019 | 57194687816; 56533501900; 57221217721; 57209657587; 57131033700; 57192008187; 57200513491; 57204464970; 8576588500; 22947495900; 6701584095; 49361888700; 7405531243; 15751448400 | phsoo97@knu.ac.kr; | MBIO | MBIO | 2150-7511 | 12 | 1 | SCIE | MICROBIOLOGY | 2021 | 7.786 | 15.7 | 2.52 | 2025-07-30 | 35 | 38 | sporulation; asexual development; velvet; WetA; secondary metabolites; Aspergillus; transcription factor; genetic regulatory network | SECONDARY METABOLISM; SEXUAL DEVELOPMENT; GENE ENCODES; ABAA; BRLA; DIFFERENTIATION; GERMINATION; SPORULATION; EXPRESSION; FUMIGATUS | Asexual development; Aspergillus; Genetic regulatory network; Secondary metabolites; Sporulation; Transcription factor; Velvet; WetA | Aspergillus nidulans; Gene Deletion; Gene Expression Profiling; Gene Expression Regulation, Fungal; Gene Regulatory Networks; Genes, Fungal; Metabolomics; Proteomics; Reproduction, Asexual; Spores, Fungal; Transcriptome; amino acid; guanine nucleotide binding protein; mitogen activated protein kinase; protein VelB; protein VosA; protein WetA; sterigmatocystin; transcription factor; transcriptome; trehalose; unclassified drug; transcriptome; Article; asexual spore; Aspergillus nidulans; citric acid cycle; conidium; controlled study; fungal gene; fungal metabolism; fungal structures; fungus spore; gene expression regulation; metabolomics; mutant; nonhuman; protein DNA interaction; secondary metabolism; signal transduction; sporogenesis; transcriptomics; wild type; asexual reproduction; Aspergillus nidulans; fungal gene; fungus spore; gene deletion; gene expression profiling; gene regulatory network; genetics; growth, development and aging; metabolism; metabolomics; proteomics | English | 2021 | 2021 (JAN-FEB) | 10.1128/mbio.03128-20 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
○ | ○ | Article | Asymmetrical PWM Series-Capacitor High-Conversion-Ratio DC-DC Converter | In this letter, an asymmetrical pulsewidth modulated (PWM) scheme is proposed to solve the inductor current unbalance and nonlinear voltage gain issues of the series-capacitor (SC) high-conversion-ratio (HCR) converter when D > 0.5. With the proposed scheme, the converter can achieve both current balancing and high step-down conversion even for D > 0.5. As a result, combined with the conventional PWM scheme, the duty cycle limitation of the SC-HCR converter is completely eliminated. A 2-kW prototype SC-HCR converter was fabricated and tested to validate the performance of the proposed PWM scheme. | Bui, Dai-Van; Cha, Honnyong; Nguyen, Viet-Chan | Kyungpook Natl Univ, Sch Energy Engn, Daegu 41566, South Korea | BUI, VAN-DAI/AAE-6202-2022; Bui, Van-Dai/AAE-6202-2022 | 57221961296; 24450248400; 57210827612 | buidai68@gmail.com;chahonny@knu.ac.kr;ncviet93@gmail.com; | IEEE TRANSACTIONS ON POWER ELECTRONICS | IEEE T POWER ELECTR | 0885-8993 | 1941-0107 | 36 | 8 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2021 | 5.967 | 15.8 | 2.04 | 2025-07-30 | 23 | 33 | Asymmetrical pulsewidth modulated (PWM); buck converter; high conversion ratio (HCR); interleaved; seriescapacitor (SC) | BUCK CONVERTER | Asymmetrical pulsewidth modulated (PWM); buck converter; high conversion ratio (HCR); interleaved; series-capacitor (SC) | Pulse width modulation; Asymmetrical PWM; Current balancing; Duty-cycle; High conversions; Inductor currents; Non linear; Series capacitors; Step-down conversion; DC-DC converters | English | 2021 | 2021-08 | 10.1109/tpel.2021.3056659 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
○ | ○ | Article | Bridgeless Hybrid-Mode Zeta-Based Inverter: Dynamic Modeling and Control | In this article, we present a bridgeless hybrid-mode Zeta inverter for distributed energy systems. We integrate the secondary diode of the conventional unfolding-type Zeta inverter into one of diagonal pairs of the secondary-side switches in a bridgeless Zeta inverter. This structure decreases the number of active power components and provides naturally well distributed loss at the body diodes of the secondary-side switches over one cycle of grid voltage, and as a result, increases both output power transfer and reliability. To attain medium-high power capacity with appropriate size of magnetic components, the bridgeless Zeta inverter operates in both discontinuous conduction mode (DCM) and continuous conduction mode (CCM). However, control of the proposed inverter is difficult because of the distinct system dynamics caused by the operations in DCM and CCM. To deal with this control problem, we first identify the mode boundaries and, corresponding to each mode, develop a dynamic model to design a controller. Then, we propose to use a feedback controller plus a feedforward controller supplemented with a repetitive controller that uses a phase-lead compensator. Experimental results using a 300-W prototype demonstrate the feasibility and effectiveness of the proposed modeling and control approach. | Han, Byeongcheol; Jo, Seung-Won; Kim, Nam-Gyeong; Lai, Jih-Sheng; Kim, Minsung | Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea; Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Dongguk Univ, Div Elect & Elect Engn, Seoul 04620, South Korea; Virginia Polytech Inst & State Univ, Future Energy Elect Ctr, Blacksburg, VA 24061 USA | ; Kim, Minsung/AAT-7092-2021; Lai, Jih-Sheng/I-1762-2016; Han, Byeongcheol/W-7608-2019 | 57188622752; 57217022071; 57220177838; 56493805300; 57201445330 | hbychol@knu.ac.kr;vsw3127@naver.com;wgx010@naver.com;laijs@vt.edu;mkim@dgu.ac.kr; | IEEE TRANSACTIONS ON POWER ELECTRONICS | IEEE T POWER ELECTR | 0885-8993 | 1941-0107 | 36 | 6 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC | 2021 | 5.967 | 15.8 | 0.63 | 2025-07-30 | 10 | 11 | Inverters; Topology; Switches; Microwave integrated circuits; Inductors; Heat sinks; Capacitors; Bridgeless inverter; continuous conduction mode (CCM); discontinuous conduction mode (DCM); phase-lead compensator; repetitive control; Zeta topology | PHASE-LEAD COMPENSATION; MICROINVERTER; DESIGN | Bridgeless inverter; continuous conduction mode (CCM); discontinuous conduction mode (DCM); phase-lead compensator; repetitive control; Zeta topology | Electric inverters; Energy transfer; Continuous conduction mode; Discontinuous conduction mode; Distributed energy systems; Feed-forward controllers; Feedback controller; Modeling and control; Phase-lead compensators; Repetitive controller; Controllers | English | 2021 | 2021-06 | 10.1109/tpel.2020.3040113 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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