• Title/Summary/Keyword: 단기간

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ESCO탐방-LIG엔설팅

  • Park, Eun-Ju
    • The Magazine for Energy Service Companies
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    • s.48
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    • pp.30-33
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    • 2007
  • 2002년도에 ESCO사업을 시작한 LIG엔설팅(전 티알씨코리아, 대표 최승기)은 발주자지만 에너지관리공단 진단용역을 통한 전문성 강화와 유능한 인재로 단기간 ESCO시장의 선두권에 진입하고 있다. 특히 이번에는 LIG엔설팅으로 사명을 바꾸고 본격적인 시장 공략에 나서고 있다.

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Sensitivity Analysis of Input Parameters for a Dynamic Food-Chain Model DYNACON (동적섭식경로모델 DYNACON에 대한 입력변수의 민감도분석)

  • Hwang, Won-Tae;Lee, Geun-Chang;Han, Moon-Hee;Cho, Gyu-Seong
    • Journal of Radiation Protection and Research
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    • v.25 no.1
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    • pp.11-19
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    • 2000
  • The sensitivity analysis of input parameters for a dynamic food chain model DYNACON was conducted as a function of deposition date for the long-lived radionuclides $(^{137}Cs,\;^{90}Sr)$. Also, the influence of input parameters for the short and long-terms contamination of selected foodstuffs (cereals, leafy vegetables, milk) was investigated. The input parameters were sampled using the LHS technique, and their sensitivity indices represented as PRCC. The sensitivity index was strongly dependent on contamination period as well as deposition date. In case of deposition during the growing stages of plants, the input parameters associated with contamination by foliar absorption were relatively important in long-term contamination as well as short-term contamination. They were also important in short-term contamination in case of deposition during the non-growing stages. In long-term contamination, the influence of input parameters associated with foliar absorption decreased, while the influence of input parameters associated with root uptake increased. These phenomena were more remarkable in case of the deposition of non-growing stages than growing stages, and in case of $^{90}Sr$ deposition than $^{137}Cs$ deposition. In case of deposition during growing stages of pasture, the input parameters associated with the characteristics of cattle such as feed-milk transfer factor and daily intake rate of cattle were relatively important in contamination of milk.

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우유의 혈중 저칼슘증

  • 임광택
    • 월간낙농육우
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    • v.20 no.7 s.219
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    • pp.111-114
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    • 2000
  • 우유에 있어서 전환기란 분만 전후 각각$3\sim4$주간으로 이 기간의 관리가 다음 비유기간의 산유수준 및 번식성적과 직결되어 있다. 전환기의 우유는 다음과 같이 극복해야 할 많은 과제를 안고 있다. 단기간인 $50\sim60$ 일간에 걸쳐 비유 $\rightarrow$ 건유 $\rightarrow$ 분만 $\rightarrow$ 비유로 이어지는 격심한 생

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