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Molinate의 물벼룩에 대한 급성 및 만성독성 연구
신진섭(Jin-Sup Shin),김병석(Byung-Seok Kim),박연기(Yeon-Ki park),박경훈(Kyung-Hoon park),이제봉(Je-Bong Lee),경기성(Kee Sung Kyung),안용준(Young-Joon Ahn) 한국농약과학회 2008 농약과학회지 Vol.12 No.3
To assess the impact of molinate on freshwater aquatic organisms, acute and chronic toxicity studies for waterfleas were conducted. In acute toxicity studies for Daphnia magna, and Moina macrocopa, the 48-h EC?? values were 11.4 and 8.3 ㎎/ℓ respectively. And in reproduction toxicity studies for the same species, the NOEC’s were 2.5 and 2.0 ㎎/ℓ respectively. These results suggest that waterfleas have simillar sensitivity to molinate. On the other hand, the NOEC for 3-generation toxicity of moina macrocopa, 0.16 ㎎/ℓ, was much lower than those of acute values. This studies concludes that molinate has minimal risk to waterfleas in river.
신진섭(Jin-Sup Shin),강대성(Dae-Seong Kang) 한국정보기술학회 2012 Proceedings of KIIT Conference Vol.2012 No.11
본 논문에서는 마커를 이용한 거리측정 방법을 제안한다. 마커와 카메라간의 거리를 측정하기 위해서는 여러 단계를 거쳐야 한다. 먼저 거리에 대한 마커 크기 값을 미리 저장시켜 놓는다. 그리고 에르미트 보간법(monotone cubic hermite interpolation)을 사용하여 거리에 대한 마커 크기 값을 추정한다. 사각형의 꼭지점과 삼각형의 꼭지점을 검색한 뒤 이 꼭지점과 CCW(CounterClockWise)알고리즘을 이용하여 마커를 검출하게 된다. 마커 크기를 에르미트 보간법에 의해 추정된 값과 비교해 가장 가까운 값을 선택해 거리를 측정하게 된다. 본 논문에서 제안한 거리측정 방법이 정확도면에서 우수함을 증명했다. This paper is to study range-finding using maker. This method goes several phases for range-finding between maker and camera. First, maker size values about distance must be saved. Values of maker size about distance are estimated by MCHI(monotone cubic hermite interpolation). After searching vertices of quadrangle and triangle, maker is detected by these and CCW(CounterClockWise) algorithm. After comparing value of maker size and calculated value, the nearest value is selected for range-finding. The experimental results show that proposing method is effective at accuracy
Depth정보와 SURF 알고리즘을 이용한 실시간 객체 추적 알고리즘 연구
신진섭(Jin-Sup Shin),강대성(Dae-Seong Kang) 한국정보기술학회 2012 Proceedings of KIIT Conference Vol.2012 No.5
본 논문에서는 키넥트에서 출력하는 Depth정보와 SURF 알고리즘을 이용하여 실시간으로 객체를 추적하는 방법을 제안한다. Meanshift와 Camshift의 약점인 조명이나 잡음을 극복하기 위해 키넥트의 Depth정보를 이용했고 실시간으로 처리를 위해 속도가 느린 SIFT 알고리즘 보다는 SURF 알고리즘을 사용했다. 본 논문은 배경 모델링된 Depth 정보에서 SURF 알고리즘을 이용하여 특징점을 생성한 뒤 특징점을 가지고 탐색 윈도우를 생성하고 이를 Camshift로 추적하는 방법을 제안하였다. 실험 결과 본 논문에서 제안한 Depth 정보와 SURF 알고리즘을 이용한 방법이 기존의 방법보다 처리시간과 정확도가 효과적임을 증명하였다. This paper is a study on real-time object tracking algorithm using depth information of the kinect and fast speeded up robust feature(SURF) algorithm. Depth information of the kinect is used to overcome the disadvantage which Camshift and Meanshift have of illumination and noise. because process time of SURF algorithm is faster than process time of scale invariant feature transform(SIFT), SURF algorithm is used for real-time processing. In this paper, depth information using background modeling and SURF algorithm generates interest point detection, interest point detection can create search window and we present object tracking method using Camshift and interest point detection.The experimental results show that this proposed methods using depth information and SURF algorithm is more effective than conventional methods at process time and accuracy.
Benzimidazole계 살균제의 농작업자 위해성평가
이제봉(Je Bong Lee),신진섭(Jin Sup Shin),정미혜(Mi-Hye Jeong),박연기(Yeon-Ki Park),임건재(Geon-Jae Im),강규영(Kyu Young Kang) 한국농약과학회 2005 농약과학회지 Vol.9 No.4
Pesticide risk assessment for pesticide operators as well as for consumers has become one of the pesticide regulatory tools to reduce any unreasonable adverse health effects from pesticide use. The risk for pesticide operators can be quantified by comparing the acceptable operator exposure level(AOEL) with exposure level during pesticide application. This study is to evaluate the risk of benzimidazole fungicides application worker. The exposure level of pesticide applicators were calculated using Japanese operator exposure study tested with EPN 45% EC. The AOELs for pesticides were obtained dividing relevant lowest no observed abuse effect levels(NOAELs) for the exposure scenario into uncertainty factor, 100. For the non-cancer and cancer occupational risk assessment, Q₁<SUP>*</SUP> produced by US/EPA and life time average daily dose(LADD) calculated from average daily dose(ADD), treatment days per year, worked years for life time were used. Operator exposure for benzimidazole fungicides application were benomyl 0.2, carbendazim 0.36 and thiophanate-methyl 0.42 ㎎/㎏/day. Short-term AOELs for benomyl, carbendazim and thiophanate-methyl were 0.3, 0.1, and 0.2 ㎎/㎏/day, and long-term AOEL were 0.025, 0.025, 0.08 ㎎/㎏/day, respectively. LADDs were benomyl 0.0038, carbendazim 0.0067, thiophanate-methyl 0.0081 ㎎/㎏/day. The ratios of exposure to AOEL were 0.28~1.5 for short-term and 3.73~9.88 for long-term. Cancer risk for operator were 9.12×10?? for benomyl, 1.61×10?? for carbendazim and 1.13×10?⁴ for thiophanate-methyl by the standard application scenario. The result showed 3 fungicides exceed the risk criteria, 1.0×10??. The above risk assessments were based upon conservative assumptions and therefore are believed to be protective of the applicator. To refine the risk at the more actual conditions, further risk assessment with more realistic data would be needed.
살균제 carbendazim이 랫드 간 해독체계에 미치는 영향
이제봉(Je Bong Lee),신진섭(Jin Sup Shin),정미혜(Mi-Hye Jeong),박연기(Yeon-Ki Park),강규영(Kyu Young Kang) 한국농약과학회 2005 농약과학회지 Vol.9 No.4
Serum alanine aminotransferase(ALT), aspartate aminotransferase (AST), hepatic glutathione, glutathione S-transferase(GST), cytochrome P450 and cytochrome P450 reductase activity were measured to investigate the effects of hepatic detoxication system and metabolic activities of carbendazim in Sprague Dawley(S.D.) male rat at dose levels of 375, 750 or 1,500 ㎎/㎏ body weight. Serum alanine aminotransferase(ALT) and aspartate aminotransferase(AST) activities were slightly increased in all test groups after 120 minutes of administration. Glutathione was increased about 20% at high and medium dose level within 120 minutes after administration, while activity of glutathione S-transferase was decreased 36~50%. However, the enzyme activity was recovered from all test groups after 240 minutes of administration. Cytochrome P450 and activity of cytochrome P450 reductase were decreased 25~50% until 120 minutes after administration, but recovered after 240 minutes.
농약원제 및 제품 간의 자극성 및 감작성 상관성 평가 연구
이제봉(Je Bong Lee),신진섭(Jin Sup Shin),박연기(Yeon-Ki Park),정미혜(Mi-Hye Jeong),홍순성(Soonsung Hong),임건재(Gun-Jae Im),강규영(Kyu Young Kang) 한국농약과학회 2010 농약과학회지 Vol.14 No.2
This study was investigated to review the potentials of irritation and skin sensitization of active ingredients and end-use products of pesticides for pesticide registration, prediction of irritation and sensitization, and data requirements for other purposes. Pesticide irritation and sensitization referred to the Pesticide Manual(14th edition), while toxicity was evaluated based on the data submitted by the pesticide registrant. Totally 148 active ingredients and 149 end-use products were analyzed to compare the positive response, formulation type, and correlation between active ingredients and products. Among active ingredients, ratio of positive response to skin irritation, eye irritation, and skin sensitization were 18.8, 47.0 and 20.6% respectively. While, positive response to skin irritation, eye irritation, and skin sensitization of the products were 14.9, 38.9 and 23.6%, respectively. Emulsifiable concentrate showed the highest positive response among formulation types showing skin irritation 31.3%, eye irritation 81.3%, and skin sensitization 31.3%. On the other hand granule type showed the lowest response with skin 4.8, eye 14.3 and sensitization 14.8%. There was no correlation by active ingredient content on irritation and sensitization of products. However, both active ingredients and products showed same positive response were skin 73.1%, skin sensitization 66.2%, and eye irritation 44.7%. By the these results, correlation between technical grade of active ingredients and end-use products would be use for pesticide management at the screening stage, especially skin irritation and skin sensitization.