• 한국미생물생명공학회:학술대회논문집
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• 한국미생물생명공학회 2002년도 학술발표대회
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• pp.104-104
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• 2002

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.66.2-67
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• 2000

No Abstract, See Full Text

• Environmental Analysis Health and Toxicology
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• 제14권4호
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• pp.165-174
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• 1999

This study was conducted to analyze the priority of environmental problems in Korea by investigating the environmental professionals' perception. The delphi technique was applied to identify their risk perception towards some specific items related with pollution. A standardized questionnaire on environmental problems and their priorities was used to 74 subjects. In the questionnaire, the environmental problems were divided into the general ones,9 items, and the specific ones,30 items. Also, the perception was associated with two points of view which were the risk on general human health or ecosystem, and on the present situation in Korea. The priority of risk from general environmental problems on human health or ecosystem was analyzed in the order of 'water pollution', 'air pollution', 'soil contamination', 'waste', 'toxic chemical pollutants', 'food contamination', 'ocean contamination', 'odor pollution', and 'noise pollution'. The priority of risk on the present situation in Korea was analyzed in the order of 'water pollution','air pollution','waste','toxic chemical pollutants','food contamination','soil contamination','ocean contamination','odor pollution', and 'noise pollution'. And these priorities were significantly related with the characteristics of respondents such as sex, age, and major concerned area. However, for the first five priorities of risk from the specific environmental problems on human health or ecosystem, the environmental professionals agreed with 'automotive vehicle exhaust', 'domestic and industrial source pollutants to surface water', '$CO_2$nd g1oba1 warming effect','toxic air pollutant' and 'industrial source air pollution'. The priorities of risk on the present situation in Korea were similar to these results.

• 한국멀티미디어학회논문지
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• 제6권6호
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• pp.1062-1070
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• 2003

본 논문에서는 자동 추적 시스템을 이용하여 반자연적인 조건에서 화학 약물의 아치사량 투석에 반응하는 수중 생물중 하나인 물고기(송사리)의 행동을 관찰하였다. 결과의 분석을 위하여, 약물 투여 전의 대표적인 행동을 패턴 A로 정의하였으며, 약물 투여 후의 대표적인 행동을 패턴 B로 정의하였다. 실험 결과, 패턴 B가 약물 투여 후에 빈번하게 관찰되는 반면, 패턴 A는 약물 투여 전에 많이 관찰되었다. 또한, 물고기의 움직임 패턴을 자동으로 탐지하기 위하여 대표 패턴들을 인공신경망의 학습을 위하여 추출하였다. 독성 물질(다이아지논) 투여 후 패턴 B에 대한 평균 탐지율은 크게 증가하였으나, 패턴 A에 대한 탐지율은 크게 감소함을 볼 수 있었다 본 논문에서는 지표종의 행동 모니터링을 통하여 환경에서 독성 물질의 존재를 탐지하는 방법으로 인공 신경망의 적용을 보여주고 있다.

• 한국가스학회지
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• 제21권1호
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• pp.52-58
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• 2017

2015 국민안전처 통계에 따르면, 화재 피해 중 연소생성물에 의한 피해가 가장 많은 사상자를 내는 것으로 나타났다. 이러한 이유로 최근 연소생성물에 관한 연구는 국내외에서 활발하게 이루어지고 있다. 국내에서는 연소 생성물이 사람에게 미치는 영향과, 화염의 전파속도에 미치는 영향이라는 관점에서 연구가 진행되고 있고, 해외에서는 연소생성물이 사람에게 미치는 독성 뿐만 아니라 offshore 대피소에 미치는 영향까지 연구되고 있다. 연소생성물은 독성을 가지고 있고, 시야를 가려 탈출을 방해하기 때문에 많은 연구에서 실험과 CFD시뮬레이션을 이용하여 연소 생성물 제거 설비의 최적화에 관한 연구를 진행하고 있다. 본 연구에서는 연소를 통한 독성가스 발생 모델과, 그 가스의 제거 시설에 대한 연구 동향을 분석하여, 추후 연소생성물 연구의 기준이 될 것으로 판단된다.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 1994년도 교수 연수회(환경)
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• pp.412-415
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• 1994

The fundamental assumption that thresholds exist for noncarcinogenic toxic effects of chemicals is reviewed; this assumption forms the basis for the no-observed-effect level/ safety-factor (NOEL/SF) approach to risk assessment for such effects. The origin and evolution of the NOEL/SF approach are traced, and its limitations are discussed. The recently proposed use of dose-response modeling to estimate a benchmark dose as a replacement for the NOEL is explained. The possibility of expanding dose-response modeling of non carcinogenic effects to include the estimation of assumed thresholds is discussed. A new method for conversion of quantitative toxic responses to a probability scale for risk assessment via dose-response modeling is outlined.

• Bulletin of the Korean Chemical Society
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• 제33권11호
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• pp.3559-3564
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• 2012

An efficient one-pot synthesis of ${\beta}$-acetamido ketones was accomplished by AgOTf-catalyzed multicomponent reactions of substituted acetophenones with aromatic aldehydes and acid chloride in acetonitrile in high yields. The methods offer several significant advantages of easy handling, mild reaction conditions, and use of effective and non-toxic catalyst.

• 한국군사과학기술학회지
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• 제18권5호
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• pp.612-620
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• 2015

Short-range detection of chemical agents deposited on ground surface using a standoff Raman system employing a pulsed laser at 248 nm is described. Mounted in a vehicle such as an NBC reconnaissance vehicle, the system is protected against toxic chemicals. As most chemicals including chemical warfare agents have unique Raman spectra, the spectra can be used for detecting toxic chemicals contaminated on the ground. This article describes the design of the Raman spectroscopic system and its performance on several chemicals contaminated on asphalt, concrete, sand, etc.

• Environmental Engineering Research
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• 제22권4호
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• pp.401-406
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• 2017

Ammonia, $NH_3$, is a key chemical widely used in chemical industries and a toxic pollutant that impacts human health. Thus, there is a need for the development of effective adsorbents with high uptake capacities to adsorb $NH_3$. An adsorbent with a high surface area and a small pore size is generally preferred in order to have a high capacity for the removal of $NH_3$. The use inorganic nanoporous materials as gas adsorbents has increased substantially and emerged as an alternative to zeolite and activated carbon. Herein, mesoporous alumina (MA) was prepared and used as an $NH_3$ adsorbent. MA showed good pore properties such as a uniform pore size and interlinked pore system, when compared to commercial adsorbents (activated carbon, zeolite, and silica powder). MA has free hydroxyl groups, serving as useful adsorption sites for $NH_3$. In an adsorption isotherm test, MA exhibited 4.7-6.5 times higher uptake capacities for $NH_3$ than commercial adsorbents. Although the larger surface areas of adsorbents are important features of ideal adsorbents, a regular and interlinked adsorbent pore system was found to be a more crucial factor to adsorb $NH_3$.

• Environmental Analysis Health and Toxicology
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• 제20권2호
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• pp.109-121
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• 2005

A chemical ranking and scoring (CRS-Korea) system was developed and proposed to use as the first step to prioritize the toxic chemicals for the purpose of monitoring and detailed risk assessment that might follow as necessary. The CRS-Korea system takes a basic concept of risk assessment (both human health risk and ecological risk) in that risk score is determined by the product of toxicity score and exposure score. Included in the toxicity category are acute toxicity, chronic/sub -chronic toxicity, carcinogenicity, and other toxicity. The exposure category consists of quantity released to the environment, bioconcentration, and persistence. A consistent scheme and a comprehensive chemical data base are offered in the CRS-Korea system to calculate a score for the each component in the two categories by using specific physicochemical, fate, and toxic properties and the quantity of the chemical used. The toxicity score is obtained by adding up all the individual scores for the components in the toxicity category. The exposure score is determined by multiplication of the score of the quantity released with the sum of persistent score and bioconcentration score. Equal weight is given to the toxicity score and the exposure score. As the CRS-Korea system was applied to identify 50 national priority chemicals, it was found that significant data gap exists on toxicity and fate properties and that the uncertainty associated with estimating the quantify released to the environment is notably high. The proposed CRS system is only a screening tool in the first step toward the priority setting and should be used with expert judgement and other considerations necessary.