• 제목/요약/키워드: occurrence quantity

검색결과 130건 처리시간 0.022초

하나로에서 기체 방사성 폐기물 발생 현황 분석 (An Analysis on the Gaseous Radioactive Waste Occurrence Present Condition in HANARO)

  • 최호영;황승렬;강태진;이문
    • 한국방사성폐기물학회:학술대회논문집
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    • 한국방사성폐기물학회 2003년도 가을 학술논문집
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    • pp.556-561
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    • 2003
  • 하나로의 출력 운전 이후 1996년부터 2002년까지 하나로에서 발생한 기체 방사성 폐기물의 양을 종류별로 정리하였다. 이 기간 동안 원자로실 및 RCI 굴뚝을 통해 환경으로 방출된 기체 방사성 폐기물은 Ar-41이 6.33E13 Bq, H-3이 5.10E12 Bq, I-131이 3.26E8 Bq 이었다.

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알코올 소비와 음주교통사고 (Alcohol Consumption and Alcohol-involved Traffic Accident)

  • 이원재
    • 보건교육건강증진학회지
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    • 제14권2호
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    • pp.69-94
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    • 1997
  • Recently, occurrence of alcohol-involved traffic accidents is increasing while all the accidents by violation of law except drunk driving. Traffic accidents by drunk driving has a great external cost. In detecting drunk driving, blood alcohol content Many studies reported close correlation between blood alcohol content and traffic accidents by drunk driving. The risk of traffic accidnet increases exponentially as blood alcohol content increases. To control traffic accidents by drunk driving, decide target population. Heavy drinkers are few and responsible for a small part of the loss while casual drinkers are many and responsible for a large part of the loss. Casual drinkers need to be included in the targer population for the control of traffic accident by drunk driving. Stragegies to reduce the quantity of alcohol consumed, change the pattern of drink, such as frequency of drinking, raise of perceived risk of accident need to be sought.

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폐주물사 미분말을 시멘트 대체재료로 사용한 콘크리트의 특성 (Properties of the Concrete using the Waste Foundry Sand Powder by Cement Replacement)

  • 우종권;반주환;류현기
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2006년도 춘계학술논문 발표대회 제6권1호
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    • pp.57-61
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    • 2006
  • Waste foundry sand of industrial waste which is happening by vast quantity according to fast development of industry has much the occurrence amount and processing method is depended on reclamation, and is using by fine aggregate for construction by recycling method among others. In this research Waste foundry sand powder into cement replace fare use possibility availability judge wish to Slump and air content decreased the replacement ratio increases by concrete special quality that do not harden according to experiment result, and unit capacity mass and bleeding increased the replacement ratio increases. Hardening concrete intensity special quality displayed strength improvement to replacement ratio 20%, and tendency that watertightness increases most in replacement ratio loft in watertight property appear. Considering the strength and watertight properties, the adequate usage of waste foundry sand powder is the 10% of replacement ratio.

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부산항 하역장비에서 발생하는 고장형태와 예방대책 (Trouble type and preventive countermeasure of loading facilities in Busan harbor)

  • 한근조;전영환;심재준;한동섭;김병진
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2002년도 춘계학술대회논문집
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    • pp.189-196
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    • 2002
  • As the quantity of transported goods increases, there is a lot of mechanical trouble with loading facilities. So it tremendously produces not only economic loss but also time loss. To reduce the loss from the trouble of leading facilities, it is necessary to analyse the distribution of the problem's occurrence and use the analyzed data to minimize the outbreak of trouble. So the data can be usefully used when designing or manufacturing and it also can be utilized for proper maintenance of operating equipment, frequency of inspection and repair, know-how of checking on equipment and purchasing of spare parts. And it is possible to minimize the loss if the propel maintenance is adapted

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The Effect of Physical Factors Related to Industrial : Accidents on Manufacturing Performance in a Small/Medium-Sized Manufacturing Industry in Korea

  • Park, Hai-chun;Lee, Ann-sub
    • 산업경영시스템학회지
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    • 제24권64호
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    • pp.77-83
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    • 2001
  • In this paper, we investigated the relationship between the variables related to manufacturing environment and industrial accident. Also we wish to analyze how much these variables influence in production result of company: the manufacturing performances such as production quantity, quality, cost and delivery. For this investigation, we collected the real data from 16 small/medium-sized manufacturing companies by performing a questionnaire survey and one-site interview with the workers. Sixteen companies were made up of the following four industries: metal processing, machinery manufacturing, chemical products manufacturing and electronic products manufacturing, The data analysis was made using SPSS PC+. Based on the result of the analysis, we came to the conclusion that most of variables related to manufacturing environment and industrial safety were connecting with industrial accident occurrence and also influenced in manufacturing performance.

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영남권 사업장 폐기물의 발생종류 및 처리방법에 대한 실태조사 (A fact-finding survey for the occurrence sort and a disposal way of industrial wastes in Young-nam area)

  • 박용팔;이지희;홍원화
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2002년도 추계학술발표대회
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    • pp.179-182
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    • 2002
  • Today, augmentation of industrial wastes with industrial development demands diminution and recycling technical development for industrial wastes reduction. A statistical research of industry and constructional wastes as a request of the times can achieve the conservation of resource and the protection of environment. The ultimate object of the study is not only diminution and recycling of industrial wastes but also the degree of self-sufficiency in resource and the attainment of comfortable life environment, which can the accomplish the resource circulation system and make progress into the environmentally advanced country. The object of this investigation is industrial classification, a waste discharge quantity, a waste sort, waste disposal of industrial wastes in Yeung-nam area. The investigation of special quality in industrial wastes can be used to establish a wastes management policy and a disposition method .

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Red Pepper Cultivation Using a Native Legume Cover Crop in Korea

  • Cho, J.L.;Choi, H.S.;Lee, Y.;Lee, M.H.;Kim, C.S.
    • 한국유기농업학회지
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    • 제19권spc호
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    • pp.247-250
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    • 2011
  • Four seed vetch (Vicia tetrasperma), a biennial native leguminous plant, was used for a cover crop with different quantity of sowed seeds. Weed suppression and yield were evaluated for the red pepper cultivation in the following year of the vetch seeding. Seeding of 1.0, 2.0, 3.0, 4.5, and 6.0 kg 10 $a^{-1}$ suppressed weed occurrences until late in the growing season of the red pepper. Consequently, red pepper in the cover cropping system with seeding of 3.0, 4.5, and 6.0 kg 10 $a^{-1}$ had a similar yield to the conventional red pepper. The ideal seed rate in four seed vetch was 3.0 and 4.5 kg 10 $a^{-1}$ in terms of reducing weed occurrence as well as increasing growth and yield in red pepper.

Optimizing Artificial Neural Network-Based Models to Predict Rice Blast Epidemics in Korea

  • Lee, Kyung-Tae;Han, Juhyeong;Kim, Kwang-Hyung
    • The Plant Pathology Journal
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    • 제38권4호
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    • pp.395-402
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    • 2022
  • To predict rice blast, many machine learning methods have been proposed. As the quality and quantity of input data are essential for machine learning techniques, this study develops three artificial neural network (ANN)-based rice blast prediction models by combining two ANN models, the feed-forward neural network (FFNN) and long short-term memory, with diverse input datasets, and compares their performance. The Blast_Weathe long short-term memory r_FFNN model had the highest recall score (66.3%) for rice blast prediction. This model requires two types of input data: blast occurrence data for the last 3 years and weather data (daily maximum temperature, relative humidity, and precipitation) between January and July of the prediction year. This study showed that the performance of an ANN-based disease prediction model was improved by applying suitable machine learning techniques together with the optimization of hyperparameter tuning involving input data. Moreover, we highlight the importance of the systematic collection of long-term disease data.

수확후 채소류에 발생하는 진균독소의 탐색과 방제 (II) 이병된 양념 채소류(양파, 마늘, 고추)에서 주요 진균독소 검출 (Survey and Control of The Occurrence of Mycotoxins from Postharvest Vegetables in Korea (II) Detection of Major Mycotoxins from Diseased Spice Vegetables (Onions, Garlics and Peppers))

  • 정일민;주호종;심성철;백수봉;유승헌
    • 분석과학
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    • 제11권3호
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    • pp.206-212
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    • 1998
  • 수확후 Alternaria, Penicillium 및 Fusarium에 이병된 고추, 양파, 마늘을 HPLC로 주요독소들을 검정한 결과 고추에서 Alternaria 독소의 AOH(alternariol)는 소량~$400{\mu}g/g$, ALT(alternuene)는 소량~$103{\mu}g/g$, TeA(tenuagonic acid)는 $249{\sim}342{\mu}g/g$ 및 AME(alternariol monomethyl ether)는 $206{\sim}294{\mu}g/g$이 검출되었고 양파, 마늘에서 Penicillium 독소의 citrinin이 $2.8{\sim}18.4{\mu}g/g$, penicillin-G는 $0{\sim}439.0{\mu}g/g$, penicillic acid는 $0{\sim}10.2{\mu}g/g$ 및 patulin은 $0{\sim}7.0{\mu}g/g$ 검출되었다. 그리고 양파, 마늘에서 Fusarium 독소로는 fusaric acid가 $0{\sim}553.6{\mu}g/g$ 검출되었을 뿐 deoxynivalenol과 nivalenol은 검출되지 않았다.

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Apple Scar Skin viroid 발생상황 및 Real-time RT-PCR을 이용한 상대정량 분석 (Occurrence of Apple Scar Skin viroid and Relative Quantity Analysis Using Real-time RT-PCR)

  • 김대현;김현란;허성;김세희;김민아;신일섭;김정희;조강희;황정환
    • 식물병연구
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    • 제16권3호
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    • pp.247-253
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    • 2010
  • 우리나라 사과 및 배 주산단지 12개 지역을 대상으로 ASSVd에 대한 진단 결과, 사과 및 배나무 전체 1,193주에서 20주가 바이로이드가 검출되어 1.7%의 이병율을 나타내었다. 품종별 감염상황을 살펴본 결과, 사과는 '홍로' 품종이 이병율이 3.6%로 타 품종에 비해 많이 감염되어 있음을 알 수 있었다. 국내에서 확인된 후지 등 주요 품종에서의 ASSVd 병징은 주로 과피 얼룩반점 증상이었으나, 후지품종 과피에 발생한 코르크(corking) 반점증상이 ASSVd 감염과 연관된 것으로 새롭게 확인하였다. 본 증상은 앞으로 유관으로 바이로이드 감염여부를 판단하는 중요한 지표가 될 것으로 판단된다. ASSVd에 감염된 사과를 대상으로 real time RT-PCR을 이용하여 ASSVd을 진단하고 시료간 상대 정량값을 분석하였다. real time RTPCR은 기존 RT-PCR에 비하여 전기영동이 필요없이 신속하고 간편하게 해석할 수 있으며, 오염의 위험성이 적었다. 특히 시료 간에 상대적인 정량값을 알 수 있기 때문에 시료를 비교 분석하는데 유효하다.