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- 저자 : 신용우 ( Young Woo Shin ) (검색결과 6 건)
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UVB에 의한 한국 청년층의 최소홍반량과 최소색소량에 관한 연구
고우석(Woo Seok Koh),정진호(Jin Ho Chung),윤재일(Jai Il Youn),신용우(Young Woo Shin) 대한피부과학회 1994 대한피부과학회지 Vol.32 No.2
Background : The erythemal response and delayed tanning of the skin to UV radiations which are used as diagnostic phototest and guideline of phototherapy are different according to the races and light sources. Objective : The MED and MMD induced by UVB radiation were measured in 130 normal young adult Koreans. Methods : In this study, a high pressure mercury are lamp(Burdick UV-800) and a sunlight fluorescent lamp(Waldmann UV 800) were used as UVB light sources. Multiple sites of the lower baek or buttock skin were irradiated with an increasing dose by a constant, anount. The minimal doses of erythema response and delayed tanning of the skin were assessed visaually at 24 hours and 7 days after irradiation, respectively. Results : MED and MMD of Burdick UV-800 are 18.0+9.8mJ/cm(mean+S.D.), 29.7+12.5mJ/cm, respectively. MED and MMD of Waldmann UV 800 are 70.8+28.5mJ/cm and 91.2+33.1mJ/cm, respecively. The most frequent MED by Burdick UV-800 is 10mJ/cm and those by Waldmann UV 800 are 50m J/cm and 60m J/cm. Conclusion : In this study MED and MMD of young adult Koreans by two kinds of UVB light sources were assessed. The results : how that MED is less than MMD and the levels of MED under which the photosensitivity is suggested are 5.6mJ/cm by Burdick UV-800 anr 32.4mJ/cm by Waldmann UV 800. (Kor J Dermatol 1994; 32(2): 253-257)
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무선랜 AP를 기반으로 한 실시간 위치추적시스템에 관한 연구
최재현(Jae Hyun Choi),박제원(Jae Won Park),신용우(Young Woo Shin),이남용(Nam Yong Lee) 한국IT서비스학회 2010 한국IT서비스학회지 Vol.9 No.3
Recently, identifying user locations is becoming important as the society evolves into an ubiquitous society with the innovation of information technology. Particularly, many researches on identifying user locations are headed in direction to identify locations of users in the indoors, because a GPS that is widely used to identify the locations of users in the outdoors is inapplicable in the indoors. However, those researches are mostly not useful to general indoor environment because they are performed in a specific environment with specialized or customized devices such as UWB, RFID. Therefore, in this paper we propose a effective method to identify user locations in general indoor environments with wireless local network access points. Our approach enables to identify user location efficiently by measuring signal power of access points around the user and using the FRIIS formula which is used to calculate the distance among the things.
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LC-MS/MS를 이용한 한국에서 유통되는 농산물의 잔류 농약 평가
이화미(Hwa-Mi Lee),허수정(Soo Jung Hu),이현숙(Hyun-Sook Lee),박승영(Seung Young Park),김남선(Nam-Sun Kim),신용우(Yong Woo Shin),최근화(Keun Hwa Choi),김성일(Sung Il Kim),남슬이(Seul Yi Nam),조대현(Dae Hyun Cho) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.4
본 연구에서 한국 유통 농산물 17품목(쌀, 사과, 배, 오렌지, 복숭아, 딸기, 바나나, 파인애플, 포도, 키위, 수박, 토마토, 오이, 호박, 참외, 깻잎, 상추 등)을 대상으로 다성분 분석농약 60종을 분석하기 위하여 대상농산물의 대분류별로 곡류에서는 현미, 두류는 메주콩, 과실류에서는 감귤, 채소류는 고추, 서류에서는 감자,버섯류에서는 느타리버섯을 선정하여 회수율 실험을 수행하였다. 60% 이상의 낮은 회수율을 나타내는 성분 중 fluquinconazole, methomyl은 4가지 이상의 농산물에서 공통적으로 낮은 회수율을 나타내었다. fluquinconazole은 식품에 적용하는 식품공전 4.1.3.22의 개별 시험법을 이용한 전처리 과정을 통해 과일류, 과채류, 콩류에서 개선된 회수율 결과를 얻을 수 있을 것으로 예상되며 methomyl 은 고추, 대두, 버섯 등 식품에 적용하는 식품공전 4.1.3.15의 개별 시험법을 통해 개선된 회수율 결과를 얻을 수 있을 것으로 예상된다. 버섯, 고추에서 공통적으로 60% 미만의 낮은 회수율을 나타내었던 butocarboxim은 현재 식품공전상 개별 시험법이 존재하지 않는 항목이므로 이에 대한 개별시험법을 개발하여 다종농약다성분 시험법을 보완할 필요가 있다고 사료된다. 한국 유통 농산물 17품목(쌀, 사과, 배, 오렌지, 복숭아, 딸기, 바나나, 파인애플, 포도, 키위, 수박, 토마토, 오이, 호박, 깻잎, 상추)을 대상으로 다성분 분석농약 60종을 분석하여 농약 잔류실태를 조사하였다. 조사대상 농산물 358건 중 대부분의 농산물인 291건(81.3%)의 농산물은 농약이 검출되지 않았으며, 67건(18.7%)의 농산물에서 농약이 검출되었으나, 잔류허용기준 미만으로 검출되었다. 쌀 등 17품목에의 다소비 농산물의 농약 잔류실태를 조사한 결과 농약의 잔류량은 잔류허용기준 미만으로 ADI 대비 EDI는 0.000009%에서 0.0861%로 위해도가 아주 낮은 것으로 조사되었으며 비교적 안전한 수준으로 농산물에 대한 농약관리가 이루어지는 것으로 판단되었다. Pesticide residues in agricultural products in Korea were evaluated to create a data base to inform food policy. Pesticide residues were investigated in 17 commodities collected from 9 provinces in 2012. Our analytical method of multiresidue analysis, involved the analysis of individual recovery, linearity, limit of detection, and limit of quantitation of 60 pesticides in six matrices. The pesticides, including acetamiprid and forchlorofenuron, were evaluated in 358 agricultural samples by liquid chromatography/tandem mass spectrometry. Twenty three pesticides were detected from 67 samples. The results showed that the ratio of estimated daily intake to acceptable daily intake was 0.00009-0.0861% by the intake assessment, which means that residual pesticides in agricultural products in Korea are properly controlled.
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李一球,李浩俊,李龍熙,申容雨 건국대학교 1971 學術誌 Vol.12 No.1
According to research on the vegetation of several bald hills in the Seoul suburbs and Ichun area, almost the same types of interior dry plants were present, indicating their desirability for planting on such sites. On this basis we researched the vegetation and analyzed the soil at 23 bald hill localities distributed through all the provinces. The bald hill soils were divided into two groups : granite base soils and clay soils. Analysis established that in each case the pH was the same as the mature forest soil of the control groups and that organic content differed only slightly, but that moisture content and field capacity were so low that such sites were undesirable for the planting of most tree species. Though the climatic condition vary due to the long distance from north and south, the vegetation is much the same, including : Pinus densiflora, sorbus alnifolia var. typical, Lespedeza cyrtobatrya, Quercus serata, Indigofera kirilowi, Roinia pseudo-Acacia, Arundinella hirta var. ciliata, Miscanthus sinensis, Zoysia japonica, Themeda japonica, Cassia nomame, etc. We therefore assume that these kind? of resistant dry interior plants are suitable ones for the planting of bald hills.
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