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Effects of irradiation on superconducting properties of small-grained MgB_(2) thin films

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Chinese Physics B 2023年第12期32卷 534-540页

作者：刘丽 jung Min lee Yoonseok han Jaegu Song Chorong Kim Jaekwon Suk Won Nam Kang 刘杰 Soon-Gil jung Tuson Park Center for Quantum Materials and Superconductivity(CQMS) Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Physics Sungkyunkwan UniversitySuwon 16419Republic of Korea Institute of Modern Physics Chinese Academy of Sciences(CAS)Lanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of Sciences(UCAS)Beijing 100049China Korea Multi-purpose Accelerator Complex Korea Atomic Energy Research InstituteGyeongjuGyeongbuk 38180Republic of Korea Department of Physics Education Sunchon National UniversitySuncheon 57922Republic of Korea

We investigate the effect of ion irradiation on MgB_(2) thin films with small grains of approximately 122 nm and 140 *** flux pinning by grain boundaries is insignificant in the pristine MgB_(2) films due to good inter-grain connectivity,but is significantly improved after 120-keV Mn-ion *** scaling behavior of the flux pinning force density for the ion-irradiated MgB_(2) thin films with nanoscale grains demonstrates the predominance of pinning by grain boundaries,in contrast to the single-crystalline MgB_(2) films where normal point pinning was dominant after low-energy ion *** results suggest that irradiation-induced defects can accumulate near the grain boundaries in metallic MgB_(2) superconductors.

关键词： MgB_(2)films grain boundaries flux pinning low-energy ion irradiation

Effect of Temperature on a Two-Phase Clock-Driven Discrete-Time Chaotic Circuit

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Chinese Physics Letters 2013年第2期30卷 46-48页

作者： ZHOU Ji-Chao SONG han-jung Department of Nano Systems Engineering Inje UniversityGimhae 621-749Korea Center for Nano Manufacturing Inje UniversityGimhae 621-749Korea

The effects of temperature on a two-phase clock-driven discrete-time chaotic circuit are *** circuit for temperature analysis consists of two switches for sample and hold,a source follower,and a nonlinear function for nonlinearity in the *** chaotic dynamics of this circuit,such as time series,state transitions,frequency spectra bifurcation diagrams and Lyapunov exponents are analyzed as functions of the *** is confirmed that the dynamics of the chaotic circuit have a temperature ***,we find that the circuit can generate discrete chaotic signals only within specific temperature regions.

关键词： temperature. chaotic bifurcation

Effect of Roasting Temperature on Production of Functional Wild-Rice Tea and Factors Influencing Purchase Intention Towards Wild-Rice Tea

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Rice science 2022年第3期29卷 197-200页

作者： Hyun Yi jung Kyoung Rim han Geon lee Joong Kyun KIM Department of Biotechnology and Bioengineering Pukyong National UniversityNam-GuBusan 485137Republic of Korea Department of Research&Development Hyundae F&CBusan 604-842Republic of Korea Department of Environmental Engineering Dong-A UniversityBusan 49315Republic of Korea

The properties of raw wild rice were investigated to produce a functional tea,and the value of this tea was *** highest antioxidant activity[80.5%2,2-diphenyl-1-picrylhydrazyl(DPPH)radical scavenging activity]was achi... 详细信息

关键词： Influencing Tea Functional

Sinkihwan-gamibang ameliorates puromycin amino nucleoside-induced nephrotic syndrome

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Chinese Journal of Natural Medicines 2022年第3期20卷 177-184页

作者： lee Hyeon Kyoung Jang Youn Jae Na Se Won Kim Hye Yoom han Bywig Hyuk lee Yun jung lee Ho Sub Yoon jung Joo Kang Dae Gill hanbang Cardio-Renal Syndrome Research Center Wonkwang UniversityJeollabukdo 54538Republic of Korea College of Oriental Medicine and Professional Graduate School of Oriental Medicine Wonkwang UniversityJeollabukdo 54538Republic of Korea

Nephrotic syndrome(NS)is a kidney disease characterized by hypertriglyceridemia,massive proteinuria,hypo-albuminemia and peripheral ***-gamibang(SKHGMB)was recorded in a traditional Chinese medical book named“Bangyakhappyeon(方藥合編)”and its three prescriptions Sinkihwan,Geumgwe-sinkihwan,and Jesaeng-sinkihwan belong to *** study confirmed the effect of SKHGMB on renal dysfunction in an NS model induced by puromycin aminonucleoside(PAN).The experimental NS model was induced in male Sprague Dawley(SD)rats through injection of PAN(50 mg·kg^(-1))via the femoral *** not only reduced the size of the kidneys increased due to PAN-induced NS,but also decreased proteinuria and *** addition,SKHGMB significantly ameliorated creatinine clearance,creatinine,and blood urea *** relieved glomeruli dilation and tubules fibrosis in the glomeruli of the NS *** inhibited the protein and mRNA levels of the NLRP3 inflammasome including NLRP3,ASC,and pro-caspase-1 in NS *** reduced the protein and mRNA levels of fibrosis regulators in NS *** results indicated that SKHGMB exerts protective effects against renal dysfunction by inhibiting of renal inflammation and fibrosis in NS rats.

关键词： Sinkihwan-gamibang Puromycin aminonucleoside Nephrotic syndrome Renal dysfunction NLRP3 inflammasome Fibrosis

RELOCATABLE MODULAR BUILDINGS FOR A SHORT-TERM INTERNATIONAL EVENT:THE PYEONG-ChanG WINTER OLYMPIC GAMES

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Journal of Green Building 2020年第3期15卷 3-35页

作者： Shin Hyun Kyu lee Joo Sung jung Chan Woo Ahn Yong han Ph.D.Student Architectural EngineeringHanyang Univ.ERICAAnsan15588Republic of Korea Research Professor Innovative Durable Building and Infrastructure Research CenterAnsan15588Republic of Korea Ph.D.&Group Leader POSCO Architectures&ConstructionsIncheon21998Republic of Korea Associate professor School of Architecture and Architectural EngineeringHanyang Univ.ERICAAnsan15588Republic of Korea

Modular methods based on the use of prefabricated structures are increasingly popular for construction projects as they contribute to sustainability by reducing waste and maintenance costs as well as improving time *** short-term international events,the use of relocatable modular buildings is a potential solution to the problem of“White Elephant”structures built specially for the events that serve no useful purpose once the event is *** paper focuses on a representative relocatable modular project created for the 2018 Winter Olympic Games in South Korea using a single case study approach to develop an in-depth understanding of the advantages and disadvantages of relocatable modular construction from a practitioner’s perspective and examine how this approach supports sustainability and the Olympic *** considerations are identified for each of the five main stages:1)planning,2)design and engineering,3)manufacturing,4)construction and 5)disassembly and *** findings show how the use of relocatable modular facilities can be a useful approach for international events.

关键词： Relocatable Building Modular Construction Prefabrication Sustainability International Event Case Study

Development of hyaluronic acid-based edible film for alleviating dry mouth

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Food Science and Human Wellness 2023年第2期12卷 371-377页

作者： Dong-Keon Kweon jung-Ah han Jinwoo Bio Co. Ltd.Yongin 17111Korea Department of Food and Nutrition Sangmyung UniversitySeoul 03016Korea

For alleviating dry mouth symptoms,edible films based on hyaluronic acid(HA)with 3 different m(800,1200 and 2300 kDa)were prepared(800 F,1200 F and 2300 F,respectively),and the properties as well as effectiveness were *** concentration of each HA dispersion for film forming was set as 3.0%,1.5%or 1.0%,for the m800,1200 and 2300 kDa,respectively,based on the *** 800 F showed the highest thickness,tensile strength,and water vapor transparency,whereas obtained the lowest transparency and elongation at break among *** of the HA films showed safety against microorganism during 28 storage day at 40℃with 60%*** optimum site for film attachment in mouth was the palate,and800 F was the most effective for stimulating saliva secretion,eliciting a 38%increase compared to control(without film),tested by the elderly over 65 years *** the sensory test,800 F was also the most *** on above results,the edible films effectively stimulating saliva secretion could be produced with HA,and the physical,sensory characteristics as well as disintegration times of the film could be controlled by mand the dissolution concentration of HA.

关键词： Edible film Hyaluronic acid Saliva stimulating Tensile strength Thickness

Bifurcation Analysis of the Voltage Controlled Photosensitive Chaotic Oscillator

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Chinese Physics Letters 2013年第6期30卷 42-45页

作者： Van Ha Nguyen han jung Song Department of Nano Systems Engineering Inje UniversityGimhae 621-749Korea Center for Nano Manufacturing Inje UniversityGimhae 621-749Korea

A photosensitive chaotic oscillator which can be controlled with light illumination under various control voltage levels is *** oscillator consists of a photodiode for the light input,clock switches and capacitors for the sample and hold function,a nonlinear function that creates an adjustable chaos map,and a voltage shifter that adjusts the output voltage for *** optimizing the photodiode sub-circuit by using an available photodiode model in PC-based simulation program with integrated circuit emphasis to obtain a suitable output,the full chaotic circuit is verified with standard 0.6-μm complementary metal oxide semiconductor *** dynamics are analyzed as a function of the light intensity under different control voltage *** time series,frequency spectra,transitions in state spaces,bifurcation diagrams and the largest Lyapunov exponent are improved.

关键词： oscillator chaotic function

CoolVox:Advanced 3D convolutional neural network models for predicting solar radiation on building facades

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Building Simulation 2022年第5期15卷 755-768页

作者： jung Min han Eun Seuk Choi Ali Malkawi Harvard University Graduate School of Design CambridgeUSA Harvard Center for Green Buildings and Cities CambridgeUSA Harvard John A.Paulson School of Engineering and Applied Sciences CambridgeUSA

Data-driven models have become increasingly prominent in the building,architecture,and construction *** area ideally suited to exploit this powerful new technology is building performance ***-based models have traditionally been used to estimate the energy flow,air movement,and heat balance of ***,physics-based models require many assumptions,significant computational power,and a considerable amount of time to output *** neural networks(ANNs)with prefabricated or simulated data are likely to be a more feasible option for environmental analysis conducted by designers during the early design *** ANNs require fewer inputs and shorter computation times and offer superior performance and potential for data augmentation,they have received increased attention for predicting the surface solar radiation on ***,ANNs can provide innovative and quick design solutions,enabling designers to receive instantaneous feedback on the effects of a proposed change to a building's *** research introduces deep learning methods as a means of simulating the annual radiation intensities and exposure level of buildings without the need for physics-based *** propose the CoolVox model to demonstrate the feasibility of using 3D convolutional neural networks to predict the surface radiation on building *** CoolVox model accurately predicted the radiation intensities of building facades under different boundary conditions and performed better than ARINet(with average mean square errors of 0.01 and 0.036,respectively)in predicting the radiation intensity both with(validation error=0.0165)and without(validation error=0.0066)the presence of boundary buildings.

关键词： artificial neural networks 3D convolutional neural networks solar radiation simulation building performance simulation

Supramolecular Polymer Intertwined Free-Standing Bifunctional Membrane Catalysts for All-Temperature Flexible Zn-Air Batteries

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Nano-Micro Letters 2022年第11期14卷 341-360页

作者： Nayantara K.Wagh Sambhaji S.Shinde Chi Ho lee Sung-Hae Kim Dong-Hyung Kim han-Don Um Sang Uck lee jung-Ho lee Department of Materials Science and Chemical Engineering Hanyang UniversityAnsanRepublic of Korea Department of Applied Chemistry Center for Bionano Intelligence Education and ResearchHanyang UniversityAnsanRepublic of Korea Department of Chemical Engineering Kangwon National UniversityChuncheonGangwon 24341Republic of Korea

Rational construction of flexible free-standing electrocatalysts featuring long-lasting durability,high efficiency,and wide temperature tolerance under harsh practical operations are fundamentally significant for commercial zinc-air ***,3D flexible free-standing bifunctional membrane electrocatalysts composed of covalently cross-linked supramolecular polymer networks with nitrogen-deficient carbon nitride nanotubes are fabricated(referred to as PEMAC@NDCN)by a facile self-templated ***@NDCN demonstrates the lowest reversible oxygen bifunctional activity of 0.61 V with exceptional long-lasting durability,which outperforms those of commercial Pt/C and RuO_(2).Theoretical calculations and control experi-ments reveal the boosted electron transfer,electrolyte mass/ion transports,and abundant active surface site ***,the constructed alkaline Zn-air battery with PEMAC@NDCN air-cathode reveals superb power density,capacity,and discharge-charge cycling stability(over 2160 cycles)compared to the reference Pt/C+RuO_(2).Solid-state Zn-air batteries enable a high power density of 211 mW cm^(−2),energy density of 1056 Wh kg^(−1),stable charge-discharge cycling of 2580 cycles for 50 mA cm^(−2),and wide temperature tolerance from−40 to 70℃with retention of 86%capacity compared to room-temperature counterparts,illustrating prospects over harsh operations.

关键词： Flexible free-standing membrane electrocatalysts Supramolecular polymer Alkaline and flexible solid-state Zn-air batteries All-temperature operations High capacity and energy density