• Title/Summary/Keyword: human energy

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A Longitudinal Study on Energy, Protein, Fat and Lactose Intakes of Breast-Fed Infants (모유영양아의 수유기간별 에너지, 단백질, 지질과 유당 섭취량)

  • 김을상;이종숙
    • Journal of Nutrition and Health
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    • v.35 no.7
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    • pp.771-778
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    • 2002
  • The purpose of this study is to investigate the contents of protein, fat, lactose and energy in the human milk and the intake of human milk and those nutrients in breast-fed infants from 16 lactating women in Seoul area during the first 5 months postpartum. Daily human milk intake was determined by test-weighing method and the milk from 16 mothers was analyzed for protein (semimicro Kjeldahl, N $\times$ 6.38), fat (milk checker), lactose (HPLC). Energy was calculated by Atwater and milk factor. The mean intake of human milk to the 5th month of lactation was 668 $\pm$ 186 $m\ell$/day. Mean protein contents of the human milk at 0.5, 12, 3, 4 and 5 months postpartum showed 1.48, 1.35, 1.17, 1.11, 1.15 and 1.10 g/100 $m\ell$ respectively. Lipid and lactose contents of the human milk during the first S months postpartum averaged 3.38 g/100 $m\ell$ and 6.79 g/100 $m\ell$. Energy contents at 0.5, 12, 3, 4 and 5 months postpartum showed 64.2, 66.1, 68.3, 60.1, 58.9 and 61.2 g/100 $m\ell$ respectively. Protein intake of infants from the human milk was 8.22 g/day which was 54.8% of Korean RDA. Lipid and lactose intake of infants were 23.0 and 45.6 g/day. Energy intake of infants was 422.3 kcal/day which was 84.4% of Korean RDA. Total energy content was almost same value regardless of Atwater or milk factor but the energy ratio was some different. Protein and solid contents decreased the course of lactation but lactose content was less changed. These results suggest that more research were required for the RDA.

Development of a Full-Scope Human Machine Simulator for Human Factors Experiments

  • Sim, R.S.;Oh, I.S.;Cheon, S.W.;Park, G.O.;Lee, H.C.;Cha, K.H.;Kim, D.K.;Son, S.W.;Sabri, M.;Paris, H.
    • Proceedings of the Korean Nuclear Society Conference
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    • 1997.05a
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    • pp.219-226
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    • 1997
  • This paper presents the development of an Integrated Test Facility (ITF) that consists of a full-scope Human Machine Simulator (HMS) and some experimental measurement systems. This facility is aimed to experiment with tile design of the control room environment and the human interaction as it relates to the control of advanced nuclear power plants.

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Nursing approach to energy (Qi) flow (에너지 흐름(기(氣))의 간호학적 접근)

  • Kim, Myung-Ja;Lee, Myung-Suk
    • Journal of East-West Nursing Research
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    • v.3 no.1
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    • pp.7-16
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    • 1998
  • This paper reviewed the concept of the energy flow in east and west. The differences in the views of the energy flow between oriental and western thought were compaired according to the ontological point of view. Human body take up energy and material on open system which maintains homeostasis. Human and environment are continuously interacting in a state of co-existence. Human has energy field called "aura" and seven chakra in energy outflow moving came as meridian. Qi is an invisible cosmic energy helping the fundamental human activity and changes. The basic action of Qi is helping the human growth and development, maintain the body temperature and preventing the intrusion of microorganism. In the normal healthy organism, all are maintained in balance and in a continuous circulation of Qi, while illness is the result of the disturbed Qi flow in the aspect of Qi-theory. Although there are differences between oriental and western medicine in approaches to clients, the basic point of view and philosophy have many similarities on fundamental level. An understanding of the basic thought of energy flow and oriental concept of energy flow implies a more comprehensive meaning than the perspective of unitary transformation discussed in modern western thought of energy flow. Now we should avoid narrow view of energy concept and regard energy flow as an integrated concept with Korean culture. Regarding Qi-theory which provides a comprehensive and humanistic and ethical foundation for nursing philisophy through this overview, it is hoped that a contribution will be made to the development of nursing intervention which is suitable to Korean context.

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Empirical estimation of human error probabilities based on the complexity of proceduralized tasks in an analog environment

  • Park, Jinkyun;Kim, Hee Eun;Jang, Inseok
    • Nuclear Engineering and Technology
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    • v.54 no.6
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    • pp.2037-2047
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    • 2022
  • The contribution of degraded human performance (e.g., human errors) is significant for the safety of diverse social-technical systems. Therefore, it is crucial to understand when and why the performance of human operators could be degraded. In this study, the occurrence probability of human errors was empirically estimated based on the complexity of proceduralized tasks. To this end, Logistic regression analysis was conducted to correlate TACOM (Task Complexity) scores with human errors collected from the full-scope training simulator of nuclear power plants equipped with analog devices (analog environment). As a result, it was observed that the occurrence probability of both errors of commission and errors of omission can be soundly estimated by TACOM scores. Since the effect of diverse performance influencing factors on the occurrence probabilities of human errors could be soundly distinguished by TACOM scores, it is also expected that TACOM scores can be used as a tool to explain when and why the performance of human operators starts to be degraded.

Application of Gamma Irradiation for the Reduction of Residual Nitrite and Nitrosamine in Meat Products

  • Ahn, Hyun-Joo;Kim, Jae-Hun;Lee, Ju-Woon;Jo, Cheorun;Byun, Myung-Woo
    • Food Science of Animal Resources
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    • v.24 no.4
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    • pp.367-372
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    • 2004
  • Nitrite, a curing agent of meat products, is precursors of carcinogenic N-nitrosamines during processing of meat products or under human stomach conditions as well as having its own toxicity. Some researches have been conducted to evaluate the effects of ionizing radiation on the reduction of residual nitrite and N-nitrosamines in an aqueous model system and cured meat products with different packaging methods during storage. These results showed that the gamma irradiation was effective in reducing the residual nitrite and N-nitrosamines in an aqueous model system as well as meat products. Especially, irradiation combined with vacuum or modified atmosphere packaging was more effective in nitrite and N-nitrosamines reduction than aerobic packaging during storage. The objective of this review is to introduce the irradiation technology for the application of reducing the residual nitrite and N-nitrosamine contents in meat products.

Human Reliability Analysis in Wolsong 2/3/4 Nuclear Power Plants Probabilistic Safety Assessment

  • Kang, Dae-Il;Yang, Joon-Eon;Hwang, Mee-Jung;Jin, Young-Ho;Kim, Myeong-Ki
    • Proceedings of the Korean Nuclear Society Conference
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    • 1997.05a
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    • pp.611-616
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    • 1997
  • The Level 1 probabilistic safety assessment(PSA) for Wolsong(WS) 2/3/4 nuclear power plant(NPPs) in design stage is performed using the methodologies being equivalent to PWR PSA. Accident sequence evaluation program(ASEP) human reliability analysis(HRA) procedure and technique for human error rate prediction(THERP) are used in HRA of WS 2/3/4 NPPs PSA. The purpose of this paper is to introduce the procedure and methodology of HRA in WS 2/3/4 NPPs PSA. Also, this paper describes the interim results of importance analysis for human actions modeled in WS 2/3/4 PSA and the findings and recommendations of administrative control of secondary control area from the view of human factors.

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A Study on Human Error Countermeasures considering Hazardous Situational Context among Organizational Factors in NPP (원전에서 조직 위험요소의 상황적 맥락을 고려한 인적오류 관리방안 제고)

  • Luo, Meiling;Kim, Sa-Kil;Lee, Yong-Hee
    • Journal of the Korean Society of Safety
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    • v.30 no.1
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    • pp.87-93
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    • 2015
  • Most incidents and accidents involved human during operating NPPs have a tendency to be structured by complicated and various organizational, individual, and environmental factors. The salient feature of the human error in NPP was extremely low frequency, extremely high complicated and extremely serious damage of human life and property. Our research team defined as 'rare human errors'. To prevent the rare human errors, the most researchers and analysts insist invariably that the root causes be made clear. The making them clear, however, is difficult because their root causes are very various and uncertain. However, These tools have limits that they do not adapt all operating situations and circumstances such as design base events. The purpose of this study is to improve the rare human error hazards consider the situational contex. Through this challenging try based on evidences to the human errors could be useful to prevent rare and critical events can occur in the future.