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      • 運動選手의 課題遂行 結果에 對한 歸因 分析

        張瑞鎭 호남대학교 1990 호남대학교 학술논문집 Vol.11 No.2

        The purpose of this study is to analyze the differences of locus of control athletes according to their Sex and individual or group entris. The major findings of this study are as follows : ㆍWhen they wins 1. The male athletes have inclination of the interval attribution, and especially they think that the winning result from effort. 2. The female athletes have inclination of the interval attribution, but they under estimate the influence of their abilties. 3. The athlete on occations of indivicual entries have inclination of the interval attribution, and they have the strong faile that the winning is result from effort, but ability. 4. The athlete on occation of group entries have inclination of the interval attribution, and they conceive that the winning is influenced by effort. ㆍWhen they less 1. The male athlete have the inclination of interval and attribution, but more interval attribution. 2. The female athlete have the inclination of the interval attribution. 3. The athlete on occation of individual entries have inclination of the interval attribution. 4. The athlete on occations of group entries have inclination of the interval attribution, and they conceive that the loss result from their inabilities and their rirals' strgng power.

      • 배드민턴 運動이 健康에 미치는 影響

        張瑞鎭 호남대학교 1993 호남대학교 학술논문집 Vol.14 No.-

        This Study is to make aneestimation of the effect of Badminton exercises on on the improvement of health of 250 club members hwo are practising exercises regulacly. 1) About the half of the pollee anewered that they had Started to play badminton from the motives of improving their health, which shows that the problem of the lack of exercises is going of bring about the serious health Unbalance in modern society. 2) About 6 or so of pollee answered that they were playing Badminton five or six times a week and 29.2% of than used to play badminton for about an hour, 25.6% about 50minutes and and20.0% about 70minutes which shows that to play badmintion as the club exercises for about an how every day is abequate for improving health. 3) Before their badminton practices, a total of about 90% of pollees felt that they had hard time in their body movements deriving from ailments or bad physical conditions such as mental stress, lumbago, chronic fatigue and circulatory diseases. But The percent dropped to nearly 40% by solving the problem of the lack of exercise through badminton playing. 4) While 12.6% answered that they had been Weak before the badminton exercise, only 1.3% said they are in infirmity after. The fact shows badmintor practice has a great effect on the improvement of physical conditions. 5) On the ailment prevention after starting the practice, 92.4% of pollees said they experienced the effect contrary to 7.6% no experiences and by playing badminton periodically, the conflict among family reduced 92% to 41.6%. 6) On the phenomenon of lack of exercise before the launching of badninton practice, 98% experienced the phenomenon. But 99.6% went through the impact of badminton exercise later. This leads to a conclusion that in fact psychological phenomenon played a great role in influence on working out the lack of exercise.

      • Tenax-GC를 利用한 大豆乳와 醱酵大豆乳의 風味成分 分析

        愼重燁,李瑞九,金顯五,朴啓仁 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

        Soy milk prepared from soy protein isolate and soy milk fermented with Lactobacillus acidophilus were adsorbed and desorbed by using Tenax-GC method and analyzed by Gas Chromatograph. It was found that this techingue was very efficient when the analytical results was expressed by the ratis of the peak area of each volatile to that of a fixed concentration of internal standard. Acetaldehyde, ethyl vinyl ketone, n-hexanal, n-hexanol, and 1 -octen-3-ol existed in soy milk. The content of acetaldehyde and diacetyl was increased while that of n-hexanal was reduced by lactic fermentation.

      • KCI등재

        전분/펙틴/몬모릴로나이트 나노복합 필름의 특성 및 산소 투과도 연구

        서석훈,서길수,유성구,신용섭,정세환,김성철,배광수,이태진,장상희,신부영 한국공업화학회 2003 공업화학 Vol.14 No.8

        Na^(+)-MMT로부터 제조한 생분해성 전분/펙틴/몬모릴로나이트 나노복합재료의 기계적 특성, 열적 특성, 그리고 산소 투과성을 연구하였다. XRD와 TEM의 결과로부터 고분자의 삽입으로 인하여 실리케이트 층간 간격이 증가하였으며, 또한 삽입형 전분/펙틴/몬모릴로나이트 나노복합재료임을 확인하였다. 합성된 전분/펙틴/몬모릴로나이트 나노복합재료의 경우 적은 양의 MMT로부터 기계적 특성과 열적 안정성이 우수함을 보였다. 그리고 전분/펙틴/몬모릴로나이트 나노복합재료의 산소 투과성은 고분자 매트릭스에 분산되어 있는 몬모릴로나이트에 의하여 현저히 저하됨을 보여주었다. Mechanical property. thermal property. and oxygen permeability of biodegradable Pectin/Starch-montmorillonite nanocomposite, prepared with Na-MMT, have been studied X-ray diffraction and TEM experiments on polymer/silicate composite samples demonstrated that the intercalation of polymer chains leads to increase in the spacing between silicate layers. In addition, it were found that the intercalated Starch/Pectin/monotmorillonite nanocomposite were prepared. It was found that the addition of only a small amount of clay was enough to improve the thermal stability- and mechanical property of Starch/Pectin/montmorillonite nanocomposite. Oxygen permeability of Starch/Pectin/montmorillonite composite was generally lower than that of pectin/starch.

      • Stereospecific Polymerization of Methyl Methacrylate by Lithium Diorganocuprate Catalysts

        Sur, Gil Soo 嶺南大學校 工業技術硏究所 1982 연구보고 Vol.10 No.1

        세가지 새로운 Lithium diorganocuprate 촉매를 이용하여 Methyl Methacrylate의 중합을 시도하였다. 촉매의 활성 및 얻어진 고분자의 입체구조는 촉매내의 유기 관능기에 따라 달라졌다. lithium dimethylcuprate 나 lithium di-n-butylcuprate 나 lithium copper hydride 등와 같은 aliphatic group 을 갖고있는 lithium diorganocuprate 화합물은 methyl methacrylate 의 isotactic 중합에 유용한 촉매임이 확인 되었다. 중합은 온도와 용매와 같은 중합조건에 영향을 받았다. 중합 온도가 낮으면 낮을수록, 고분자의 isotacticity 는 높아졌으며, tetrahydrofuran 이 isotactic 중합에 가장 좋은 용매였다. 중합 형식을 설명할 수 있는 적절한 중합 메카니즘을 제안하였다.

      • SCIESCOPUSKCI등재

        A TEST VERIFIED MODEL DEVELOPMENT STUDY FOR A NUCLEAR WATER CHILLER USING THE SEISMIC QUALIFICATION ANALYSIS AND TEST

        Sur, Uk-Hwan Korean Nuclear Society 2011 Nuclear Engineering and Technology Vol.43 No.4

        This paper is a study on a nuclear water chiller. It presents a test-verified finite element model of a water chiller to be used at a Nuclear Power Plant. The test-verified model predicts natural frequencies within 5% for all major modes below 50 Hz. This model accurately represents the dynamic characteristics of the actual hardware and is qualified for its use in the final stress analysis for seismic verification.

      • SCISCIESCOPUS
      • Extract of <i>Polygala tenuifolia</i> Alleviates Stress-Exacerbated Atopy-Like Skin Dermatitis through the Modulation of Protein Kinase A and p38 Mitogen-Activated Protein Kinase Signaling Pathway

        Sur, Bongjun,Lee, Bombi,Yoon, Ye Seul,Lim, Pooreum,Hong, Riwon,Yeom, Mijung,Lee, Hyang Sook,Park, Hijoon,Shim, Insop,Lee, Hyejung,Jang, Young Pyo,Hahm, Dae-Hyun MDPI AG 2017 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.18 No.1

        <P>Atopic dermatitis (AD) and stress create a vicious cycle: stress exacerbates atopic symptoms, and atopic disease elicits stress and anxiety. Targeting multiple pathways including stress and allergic inflammation is, therefore, important for treating AD. In this study, we investigated the remedial value of <I>Polygala tenuifolia</I> Willd. (PTW) for treating immobilization (IMO) stress-exacerbated atopy-like skin dermatitis and its underlying mechanism. Trimellitic anhydride (TMA) was applied to dorsal skin for sensitization and subsequently both ears for eliciting T-cell-dependent contact hypersensitivity in mice, which underwent 2 h-IMO stress and PTW administration for the latter 6 and 9 days in the ear exposure period of TMA, respectively. To elicit in vitro degranulation of human mast cell line-1 (HMC-1), 10 µM substance P (SP) and 200 nM corticotrophin-releasing factor (CRF) were sequentially added with 48 h-interval. PTW extract (500 µg/mL) was added 30 min before CRF treatment. IMO stress exacerbated TMA-induced scratching behavior by 252%, and increased their blood corticosterone levels by two-fold. Treatment with 250 mg/kg PTW significantly restored IMO stress-exacerbated scratching behavior and other indicators such as skin inflammation and water content, lymph node weights, and serum histamine and immunoglobulin E (lgE) levels. Furthermore, it also reversed TMA-stimulated expression of tumor necrosis factor (TNF)-α and interleukin (IL)-4 mRNAs in ear tissues. PTW significantly inhibited SP/CRF-stimulated degranulation of HMC-1 cells, subsequent tryptase secretion, and protein kinase A (PKA) activity. PTW also selectively inhibited p38 mitogen-activated protein kinase (MAPK) phosphorylation in SP/CRF-treated HMC-1 cells. PTW significantly inhibited HMC-1 cell degranulation and alleviated IMO stress-exacerbated atopic dermatitis symptoms by modulating the PKA/p38 MAPK signaling pathway.</P>

      • SCIESCOPUSKCI등재

        Development of a Numerical Methodology for Analysis and Design of Weldments

        Sur, Ukhwan The Korean Society of Mechanical Engineers 2001 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.15 No.4

        There are many analysis formulas for determining the resultant shear force in welds. However, there is no general procedure which is applicable to a joint with all six possible loadings exerted simultaneously. A numerical methodology and computer program for such a problem were developed, and they are capable of analyzing a weld of any shape composed of straight or circular line segments. The computer program developed in this study can also display the design procedures and results using computer graphics. The development of such a design procedure and an interactive computer program for weldments analysis will lead to lower cost.

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