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  • Title/Summary/Keyword: End-products

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A study on the aging characteristics for model III watthour meters (보통전력량계(III 형)의 경년변화 특성연구)

  • Kim, Young-Lae;Hong, Sun-Hak;Park, Ku-Perm;Song, Il-Keun
    • Proceedings of the KIEE Conference
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    • 1993.11a
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    • pp.9-12
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    • 1993
  • This study investigated the propriety and the extension of the term of validity about the using watthour meters at present. The subject of study is 1Cent 2W 220V 30(10)A, 1Cent 3W 110V 30(10)A of model III watthour meters. They are the used metes(products in 1984) and the repaired meters(products in 1977) in the end of the period. The investigation is as follows. o Investigation of external appearance o Driving current test o Creeping test o Noise test o Error test o Durability test. Results of the study have been the number of 13.3% exceeded permitting error and the number of 31.3% failed in endurable test of 500 hours. So, the using meters are not suitable to extend the term of validity without the improvement of several characteristics.

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Geometric Characteristics on Workpiece with Hole in Face Milling (구멍이 있는 공작물의 가공시 형상특성)

  • 이종선;원종진;안운상;홍석주;윤희중
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.11 no.5
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    • pp.1-6
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    • 2002
  • This study is to investigate the characteristics of the surface around a hole on inlet and outlet of product which are manufactured by face mill or end mill cutting with a hole or a pocket in its surface. Furthermore, experiments for optimization of process conditions to minimize the change of characteristics of milling cut surface after a hole cutting operation are implemented. This result is apply to manufacture of mold products and metal products by diecasting.

Need for Reinforcement of Safety Assessment on Genetically Modified Organisms (GMO 안전성평가제도의 고찰)

  • Kim Eun-Jin;Choi Dong-Keun
    • Korean Journal of Organic Agriculture
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    • v.14 no.2
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    • pp.139-157
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    • 2006
  • Biotechnology has reached the level of giving birth to new forms of life and with this is a growing controversy in the conflict between science and ethics. Especially, GMOs are closely linked to the food products we consume and thus, the majority of the public shows a very sensitive reaction to the safety of GMO food products. Many perspectives arose surrounding the issues of safety on the human body and the ecology. This outlines diverse structural mechanisms to be set up to ensure safety such as risk assessment, risk management etc. Despite the precautionary principle guaranteed in many ways, the problem arises whether and how this principle can be taken in the safety assessment. GMOs due to its uniqueness do not end with just the possession of the technology involved but must also be considered with the prerequisite that they could be cultured again. Therefore the reinforcement of safety assessment system is necessary. That is, the reinforcement of risk assessment including field tests, the consideration of socio-economic effects, the coordinated system of relevant authorities, the development of technology for safety assessment.

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Effects of Ethanol Extract of Ligularia fischeri Leaves on Freund's Complete Adjuvant-Induced Model of Chronic Arthritis in Mice

  • Choi, Eun-Mi
    • Food Science and Biotechnology
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    • v.15 no.2
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    • pp.277-282
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    • 2006
  • The aim of this study was to investigate the anti-inflammatory and anti-oxidant activity of Ligularia fischeri leaf extract on adjuvant induced arthritis in experimental mice. The oral administration of the L. fischeri leaf extract (LF), at doses of 100 and 200 mg/kg body weight once a day for 3 weeks, significantly reduced hindpaw swelling and the production of inflammatory cytokines (tumor necrosis factor(TNF)-α, interleukin(IL)-1β, and IL-6). Treatment with LF (100 mg/kg) also decreased the serum levels of triglyceride and low density lipoprotein(LDL)-cholesterol, and increased high density lipoprotein(HDL)-cholesterol contents compared with those of a control group. The induction of arthritis significantly increased oxidized proteins such as protein carbonyl, advanced oxidation protein products, and advanced glycation end-products in the lung, heart, and brain. Treatment with LF for 3 weeks reduced the levels of oxidized proteins. These results suggest that L. fischeri extract might be beneficial in the treatment of chronic inflammatory disorders.

Lipid Peroxidation and Its Toxicological Implications

  • Nam, Tae-Gyu
    • Toxicological Research
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    • v.27 no.1
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    • pp.1-6
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    • 2011
  • Lipid peroxidation is a free radical oxidation of polyunsaturated fatty acids such as linoleic acid or arachidonic acid. This process has been related with various pathologies and disease status mainly because of the oxidation products formed during the process. The oxidation products include reactive aldehydes such as malondialdehyde and 4-hydroxynonenal. These reactive aldehydes can form adducts with DNAs and proteins, leading to the alterations in their functions to cause various diseases. This review will provide a short summary on the implication of lipid peroxidation on cancer, atherosclerosis, and neurodegeneration as well as chemical and biochemical mechanisms by which these adducts affect the pathological conditions. In addition, select examples will be presented where antioxidants were used to counteract oxidative damage caused by lipid peroxidation. At the end, isoprostanes are discussed as a gold standard for the assessment of oxidative damages.

An ERP Customizing Methodology Based on Process Model

  • Park, Ji-Hyun;Shon, Joo-Chan;Baik, Jong-Myoung
    • Proceedings of the CALSEC Conference
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    • 2001.08a
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    • pp.467-475
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    • 2001
  • As a result of the policy for enforcing the information technology led by government and the effort of companies to get over economic crisis through the reformation of business process, the ERP market is being active. However, because imported ERP products that are supplied currently are designed for standard and rationality, they have a limit to support custom processes of domestic companies in South Korea. On the contrary, ERP products by domestic companies in South Korea are unable to support a consistent methodology of constructing ERP system. This is main reason why much time and costs are consumed than that of an original plan. To succeed in ERP construction, the purpose of ERP setup must be defined. To accomplish this end, it is required to analysis business process completely and to make a plan in detail. For ERP providers, they must support a characterized ERP construction methodology and lower the construction cost by improving an ERP package easy to customize[5].

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Disassembly Scheduling for Products with Assembly Structure

  • Lee Dong-Ho
    • Management Science and Financial Engineering
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    • v.11 no.1
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    • pp.63-78
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    • 2005
  • Disassembly scheduling is the problem of determining the ordering and disassembly schedules of used or end-of-life products while satisfying the demand of their parts or components over a certain planning horizon. This paper considers the case of the assembly product structure for the cost-based objective of minimizing the sum of purchase, setup, inventory holding, and disassembly operation costs. To represent and solve the problem optimally, this paper presents an integer programming model, which is a reversed form of the multi-level lot sizing formulation. Computational experiments on an example derived from the literature and a number of randomly generated test problems are done and the results are reported.

Development of Wooden Artifacts with Laminated Lumber (집성재를 이용한 목공예품의 개발)

  • 김사익;김동귀
    • Journal of the Korea Furniture Society
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    • v.13 no.1
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    • pp.9-17
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    • 2002
  • Laminated lumber is an engineered wood products using stress rated, seasoned and selected lumber. Each piece of lumber is graded, and then end jointed to produce the required length. This study was carried out to investigate the possibility of wooden artifacts with laminated lumber. It is expected through this research that wooden artifacts, which have originality and local character, can be developed by making design of wooden artifacts through the use of plentiful resources around the local area. A development of new design products, an improvement of distributive structure and the achievement of international competitiveness will contribute to develop the industrial artifacts art in Korea. And, it is necessary to develop a corporation system between industrial craft companies and universities.

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Review of the Studies on the Qualities in Peanut (땅콩의 품질평가 현황과 전망)

  • 박장환;박희운
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.47
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    • pp.163-174
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    • 2002
  • Peanut is one of the principal oil seeds in the world as a rich source of edible oil and protein. Peanut quality arises as a result of a complex interaction of genetic, physiological and biochemistry processes that produce the chemical composition of the peanut seed. The major factors influencing seed quality are degree of maturity and digging and drying, curing and storage as a series of harvesting. The end products, peanut butter, salted seed, confections, roasting stock and by-products are favored in world-wide because of their unique roasted peanut flavor, Literatures are reviewed mainly focusing on the physiological properties and nutritional quality of oil, protein and flavor in peanut. Chemical properties of protein and oil, and volatile flavor component in peanut seeds are studied. The objectives of this paper were to review and summarize the results obtained from the improving quality breeding program and evaluation of the chemical composition in peanut up to now.

Estimation of Demand on Bulk-Type Dryer for Agricultural Products in Korea (농산물(農産物) 건조기(乾燥機)(벌크형)의 수요추정(需要推定)에 관(關)한 조사(調査) 연구(硏究) -고추 및 엽연초(葉煙草)를 대상(對象)으로)

  • Koh, H.K.;Noh, S.H.;Cho, Y.J.
    • Journal of Biosystems Engineering
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    • v.13 no.2
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    • pp.51-62
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    • 1988
  • Bulk-type dryers which are widely used for drying special agricultural products such as tobaco leaf, red pepper, mushroom, ginseng, medicinal herb, etc, began to be distributed on a full scale since 1980 and the total number of dryers introduced to farms reached to about 36,600 units as of the end of 1986. In this study a survery was carried on the farmers cultivating special crops, dryer manufacturers and related administrative institutes and associations by means of on-the-spot investigation, mail or interview to collect data on scales and patterns of farming, utilization of bulk-type dryers, production and price streams of the special crops etc. Based on the analysis of the data surveyed predictions were made for the total demand on the bulk-type dryers and for annual demand over five-year span.

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