http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
백성환(Baek, Sunghwan),김태진(Kim, Taejin),김진구(Kim, Jingu),이요한(Lee, Yohan) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
고분자연료전지(PEMFC)에서 기체확산층(GDL)은 다공성의 카본 종이/천 위에 마이크로한 다공층을 가치는 구조로 촉매층을 지지하고 촉매층과 분리판 사이의 전류전도체 역할을 한다. 또한 촉매층에 연료와 공기 확산 및 생성된 물의 통로 역할을 하며 소수성인 전기전도성 물질로 이루어져 있다. 현재 연료전지에 쓰이는 가스확산층은 대부분 국외 회사에서 제조 수입 사용하는 현황이고 국내에서는 협진 I&C가 연구하고 있으나 상용화는 아직 이루어지지 않고 있다. 본 연구는 탄소섬유의 전도성을 개선하고자 탄소섬유 표면에 금속코팅 시 최적의 접촉계면유지를 위한 표면처리 방법 및 공정을 조사 분석 후 최적 개선방법(농도/온도/압력/시간)을 설정하고자 하였다. 또한 선정된 공정인자별 수준별 시험 후 샘플링 된 시료를 토대로 금속물질이 탄소섬유 표면에 코팅(도금)된 금속-탄소섬유를 대하여 평가하여 최적화시키고자 탄소섬유로부터 carbon paper GDL의 모재를 개발할 계획이다. 앞에서 설명한 바와 같이 탄소섬유를 이용하여 paper making, resin impregnation, molding, carbonization/graphitization의 제조공정을 거쳐 paper형태의 GDL을 생산 및 평가하고자 하였다.
송명엽,SungHwan Baek,박혜령,홍성현 한국공업화학회 2010 Journal of Industrial and Engineering Chemistry Vol.16 No.5
The activated 76.5 wt%Mg–23.5 wt%Ni (Mg–Ni) has a lower hydriding rate, compared with Mg–23.5 wt%Ni heat-treated after melt spinning, due to the nonhomogeneous distribution of Ni particles in the mixture and the larger sizes of the particles. Among 76.5 wt%Mg–23.5 wt%Ni (Mg–Ni), 71.5 wt%Mg–23.5 wt%Ni–5 wt%Fe2O3 (Mg–Ni–O), and 71.5 wt%Mg–23.5 wt%Ni–5 wt% Fe2O3(spray conversion) (Mg–Ni–Osc) samples, Mg–Ni–Osc has the highest hydriding and dehydriding rates. The reactive mechanical grinding of Mg with Ni, purchased Fe2O3 or Fe2O3(spray conversion) is considered to facilitate nucleation and shorten diffusion distances of hydrogen atoms. After hydriding–dehydriding cycling, all the samples contain Mg2Ni phase. The samples with Fe2O3 and Fe2O3(spray conversion) as starting materials contain Mg(OH)2 phase after hydriding–dehydriding cycling as well as after reactive mechanical grinding. 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Kwon, SungNam,Baek, SungHwan,Mumm, Daniel R.,Hong, Seong-Hyeon,Song, MyoungYoup Elsevier 2008 International journal of hydrogen energy Vol.33 No.17
<P><B>Abstract</B></P><P>Mg-10wt%Ni-5wt%Fe-5wt%Ti powder was prepared by reactive mechanical grinding using a planetary ball mill. The Mg-10wt%Ni-5wt%Fe-5wt%Ti powder exhibited high hydriding and dehydriding rates even at the first cycle, and its activation was completed after two hydriding–dehydriding cycles. After the reactive mechanical grinding, the particle size of the powder was reduced, as compared with those of the starting materials. The hydrogen storage properties were measured at temperatures of 473K, 573K and 623K. The activated Mg-10wt%Ni-5wt%Fe-5wt%Ti powder absorbed 5.31 wt% and 5.51 wt% of hydrogen for 5min and 1h, respectively, at 573K under 12bar H<SUB>2</SUB>. It desorbed 5.18 wt% of hydrogen at 573K under 1.0bar H<SUB>2</SUB> for 1h. The initial hydrogen absorption rate increased when passing from 473K to 573K, but decreased at 623K. The hydrogen desorption rate increased rapidly with increasing temperature from 473K to 623K. The hydrogen storage capacity was about 6.72 wt% at 573K.</P>
우주방사선측정용 조직등가비례계수관의 교정과 의료분야에서의 응용
김성환(Kim Sunghwan),남욱원(Nam Uk-Won),이재진(Lee Jaejin),표정현(Pyo Jeonghyun),박원기(Park Won-Kee),문봉곤(Moon Bong-Kon),김현수(Yeonsu Kim),백금문(Geum Mun Baek) 한국방사선학회 2014 한국방사선학회 학술대회 논문집 Vol.2014 No.추계
조직등가비례계수기는 우주에서의 복잡한 방사선 환경에서 방사선의 선에너지전이 스펙트럼을 측정하여 등가선량을 측정할 수 있는 검출기이다. 본 연구에서는 국제우주정거장에서 방사선량 모니터링에 활용할 수 있은 조직등가비례계수기를 개발하고 그 특성을 평가하였다. 소형 디지털화된 조직등가비례계수기는 미소선량측정을 위하여 직경 2 μm 크기의 선량을 모사하도록 설계 제작하였다. 개발된 검출기는 한국표준연구원의 252Cf 중성자 표준선원으로 교정하였으며, 채널- 선에너지전이 교정계수는 0.2 keV/μm-CH 이었다 Tissue equivalent proportional counter (TEPC) can measure the LET spectrum and calculate the equivalent dose for the complicated radiation field in space. In this paper, we developed and characterized a TEPC for radiation monitoring in International Space Station (ISS). The compact digital type TEPC which can simulate a 2 μm of the site diameter for micro-dosimetry has been tested with 252Cf neutron standard source in KRISS. The determined calibration factor of channel-LET was about 0.2 keV/μm-CH.
Park, Tamina,Kang, Myung-gyun,Nah, Jinju,Ryoo, Soyoon,Wee, Sunghwan,Baek, Seung-hwa,Ku, Bokkyung,Oh, Yeonsu,Cho, Ho-seong,Park, Daeui The Korean Society of Veterinary Service 2019 韓國家畜衛生學會誌 Vol.42 No.2
Foot-and-Mouth Disease (FMD) is a highly contagious trans-boundary viral disease caused by FMD virus, which causes huge economic losses. FMDV infects cloven hoofed (two-toed) mammals such as cattle, sheep, goats, pigs and various wildlife species. To control the FMDV, it is necessary to understand the life cycle and the pathogenesis of FMDV in host. Especially, the protein-protein interaction between FMDV and host will help to understand the survival cycle of viruses in host cell and establish new therapeutic strategies. However, the computational approach for protein-protein interaction between FMDV and pig hosts have not been applied to studies of the onset mechanism of FMDV. In the present work, we have performed the prediction of the pig's proteins which interact with FMDV based on RNA-Seq data, protein sequence, and structure information. After identifying the virus-host interaction, we looked for meaningful pathways and anticipated changes in the host caused by infection with FMDV. A total of 78 proteins of pig were predicted as interacting with FMDV. The 156 interactions include 94 interactions predicted by sequence-based method and the 62 interactions predicted by structure-based method using domain information. The protein interaction network contained integrin as well as STYK1, VTCN1, IDO1, CDH3, SLA-DQB1, FER, and FGFR2 which were related to the up-regulation of inflammation and the down-regulation of cell adhesion and host defense systems such as macrophage and leukocytes. These results provide clues to the knowledge and mechanism of how FMDV affects the host cell.
퀀텀닷 소재의 파장변환 특성을 이용한 낮은 유인반응을 갖는 해충방지용 조명
신정철(Jung Chul Shin),민경미(Kyung-Mi Min),배성환(Sunghwan Bae),조성윤(Sung-yoon Joe),백수복(Soo Bok Baek),김용득(Yongduk Kim) 한국조명·전기설비학회 2021 한국조명·전기설비학회 학술대회논문집 Vol.2021 No.11
This paper shows the development of light for outdoor pest-preventing through the application of quantum dot material. Up to now quantum dot material has been applied only display field although its high quantum efficiency and competitive price potential. So we intend to present the commercialization potential of quantum dot material as we try to apply them in various fields white improving stability through the powderization process of quantum dot.