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연구보문 : 유기화합물 ; 사과와 배에서 Ethoprophos의 확산
박현주 ( Hyeon Ju Park ),이기원 ( Ki Won Lee ),정경환 ( Kyong Hwan Chung ),박병준 ( Byung Jun Park ),서곤 ( Gon Seo ) 한국환경농학회 2007 한국환경농학회지 Vol.26 No.2
Ethoprophos 수용액에 담가 둔 후지사과, 황금배, 신고배내에서 ethoprophos의 확산과 축적 거동을 조사하였다. 25℃에서 용액의 농도 감소로부터 계산한 과일 내 축적량 곡선을 과피와 과육의 연계확산 모형으로 모사하여 ethoprophos의 유효확산계수를 결정하였다. 수분 함량이 높은 과육에서는 과일의 종류에 관계없이 ethoprophos의 유효확산계수가 ~10-10 m2/s로 비슷하였다. 과피에서는 유효확산계수가 ~10-12m2/s 로 작았으며, 후지사과 > 황금배 > 신고배 순으로 작아졌다. Ethoprophos 용액의 농도에 따라 과육에서 유효확산계수는 변하지 않았으나, 과피에서는 용액의 농도가 진해짐에 따라 유효확산계수도 커졌다. 과피에서 물질이동 속도는 과일내 ethoprophos의 축적 속도를 결정하는 중요 인자이었다. Diffusion and accumulation of ethoprophos in fruits such as apple and two types of pears were examined by dipping them into the solution of ethoprophos. The effective diffusivities of ethoprophos at the skin and flesh of apple and pear were determined by simulating their experimental accumulation curves with calculated ones from the model assuming consecutive diffusion of ethoprophos from skin to flesh. Its effective diffusivity at the flesh with higher content of water were higher, ~10-10 m2/s, regardless of the types of fruits, while that at the skin was small, ~10-12 m2/s and increased with the order of ``Niitaka`` pear < ``Whangkeumbae`` pear < ``Fuji`` apple. The variation in the concentration of ethoprophos in its solution did not induce any change in affecting its effective diffusivity at the flesh of ``Whangkeumbae`` pear, but the increase in the concentration caused the increase in its effective diffusivity at the skin. The penetration rate of ethoprophos at the skin was an important factor in determining its accumulation rate in fruits.
금융권 기반의 SBT를 활용한 신원 검증이 가능한 스마트 공증 개발
박현주 ( Hyeon-ju Park ),권유진 ( Yu-jin Kwon ),박준영 ( Jun-young Park ),정다연 ( Da-yeon Jung ),채기웅 ( Gi-ung Chae ),김재현 ( Jaehyun Kim ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
공증이란 공증인에 의한 공적인 증명의 준말로서, 법무부 지방검찰청 소속의 공증인이 특정한 사실 및 법률관계의 존재를 공적으로 증명하는 행위를 말한다. 공증문서 위변조 방지를 위해 NFT 에 거래방지 기능이 추가된 SBT 를 이용하여 블록체인으로 문서를 관리해 무결성과 진본성을 보장하는 스마트 공증 플랫폼을 제안한다.
우리나라 민자역사 및 역세권 효율적 개발 방향에 관한 연구 : 대전역을 중심으로
박흥순(Park Heung Soon),주용준(Ju Yong Jun),박현주(Park Hyeon Ju) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Railroad a field of basic industries in Korea had developed as representative transportation means in the interior. But since the 1970s, its transport requirement decrease had influenced in reduced earning. Thus railroad try to find a various subsidiary earning creations. Among the various subsidiary earning creations, a plan of privately financed station buildings is constructing and using. For the mean time the privately financed station have been constructed by in a narrow sensible development. But now like a Yongsan areas surrounding stations development, comprehensive development think over surrounding stations in a wide sensible development . Dae Jaen Station the traffic center of the south part in Seoul had been constructed by privately financed station of Lotte Shopping Co.
박흥순(Park Heung Soon),주용준(Ju Yong Jun),박현주(Park Hyeon Ju) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
The development of station districts is mainly categorized into 4 types. The first one is the composite development of the railroad station-areas. The second is the re-development of the direct station districts. The third is the rearrangement of the indirect station districts. And the fourth is the development of the new station districts for newly constructed railroad routes. Among these, this study aims to focus on the problems and methods of improvement in the development of the railroad station-areas, since there is not much problem with the implementation of the city development project, housing site development project or city rearrangement project for the direct or indirect station districts.