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.

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.

Fracture-mechanical Modeling of Tool Wear by Finite Element Analysis

Sur, Ukhwan,Lee, Yeongseop 한국안전학회 2004 한국안전학회지 Vol.19 No.4

마모구조는 대략적으로 기계, 화학 빛 열적 마모 등으로 구분되어 진다. 평면변형 유한요소법이 지속적인 칩 형성을 갖는 대각선 가공을 시물레이션하기 위하여 새로운 재료의 응력 및 온도 필드와 같이 사용되었다. 작업소재의 변형은 등방성 변형 경화를 갖는 탄성-점소성으로 취급되며, 수치해석의 해는 소성 변형과 온포 필드의 결합을 설명하며, 온도 종속적인 재료 물성치로 취급된다. 이 논문에서 개발된 모델에서는 전단영역 주위의 변형률, 응력 및 온도 분포에 대한 추성모델의 불확실성의 영향들을 보여주며 예측된 전단영역의 응력, 변형률 및 온도의 평균값들은 기존의 실험 치와 비교해서 잘맞는 것으로 사료된다. Wear mechanisms may be briefly classified by mechanical, chemical and thermal wear. A plane strain finite element method is used with a new material stress and temperature fields to simulate orthogonal machining with continuous chip formation. Deformation of the workpiece material is treated as elastic-viscoplastic with isotropic strain hardening, and the numerical solution accounts for coupling between plastic deformation and the temperature field, including treatment of temperature-dependent material properties. Effects of the uncertainty in the constitutive model on the distributions of strain, stress and temperature around the shear zone are presented, and the model is validated by comparing average values of the predicted stress, strain, and temperature at the shear zone with experimental results.

Surface-enhanced Raman scattering (SERS) spectroscopy: a versatile spectroscopic and analytical technique used in nanoscience and nanotechnology

Sur, Ujjal Kumar Techno-Press 2013 Advances in nano research Vol.1 No.2

Surface-enhanced Raman scattering (SERS) effect deals with the enhancement of the Raman scattering intensity by molecules in the presence of a nanostructured metallic surface. The first observation of surface-enhanced Raman spectra was in 1974, when Fleischmann and his group at the University of Southampton, reported the first high-quality Raman spectra of monolayer-adsorbed pyridine on an electrochemically roughened Ag electrode surface. Over the last thirty years, it has developed into a versatile spectroscopic and analytical technique due to the rapid and explosive progress of nanoscience and nanotechnology. This review article describes the recent development in field of surface-enhanced Raman scattering research, especially fabrication of various SERS active substrates, mechanism of SERS effect and its various applications in both surface sciences and analytical sciences.

Clay를 함유한 펙틴/전분 나노복합체의 기계적 물성 및 가스 투과도

서석훈,홍경민,신용섭,김성보,서길수,신부영 한국공업화학회 2002 응용화학 Vol.6 No.2

Mechanical properties and gas permeability of biodegradable Pectin/Starchmontmorillonite clay (filler) have been studied. Tensile strength and modulus was increased as the increasing content of montmorillonite. X-ray diffraction was used to assess the periodic distance of the clay layers and transmission electron microscopy was used to to observe the composite morphology. The periodic distance of the stacks was 21.76∼26.12 Å for the processed composites. Thus suggests that the layers of the clay particles have been intercalated. Oxygen permeability of pectin/starch-clay composites was generally lower than that of plastic films.

Effects of grape seed proanthocyanidin extract on side effects of high-dose methylprednisolone administration in male rats

Sur Aslihan,Iflazoglu Mutlu Seda,Tatli Seven Pinar,Seven Ismail,Aslan Abdullah,Kizil Meltem,Kulaksiz Recai,Yaranoglu Mustafa Hilmi,Esen Selim 한국독성학회 2023 Toxicological Research Vol.39 No.4

In this study, we investigated the effects of grape seed proanthocyanidin extract (GSPE) against the side effects of highdose administration of methylprednisolone (MP) in male rats. A total of 32 adult Wistar male albino rats were divided into four groups: (1) control (CON), received standard food only; (2) MP, received standard food + intraperitoneal injection of 60 mg/kg MP on day 7; (3) GSPE, received standard food + 200 mg/kg/day GSPE; and (4) MP + GSPE, received standard food + 200 mg/kg/day of GSPE + intraperitoneal injection of 60 mg/kg MP on day 7. All animals in the GSPE and GSPE + MP groups were treated once a day by oral gavage for 14 consecutive days. The feed intake of rats in the MP and MP + GSPE groups decreased significantly by 24.14% and 13.52%, respectively (p < 0.05). Administration of MP resulted in significant increases in serum concentrations of blood urea nitrogen (p < 0.001), glucose (p < 0.01), alkaline phosphatase, and adrenocorticotropic hormone (p < 0.05). High-dose MP administration significantly reduced catalase (p < 0.001) and glutathione peroxidase (p < 0.05) concentrations in the liver and kidney tissues of rats, while glutathione concentrations were only reduced in liver tissue (p < 0.05). The expression levels of Bcl-2 and TNF-α in liver, kidney, and testicular tissue were significantly increased, while the expression levels of caspase-3 were reduced (p < 0.001). Furthermore, sperm concentration was significantly affected by GSPE in rats induced by high-dose MP, and sperm loss was significantly reduced in MP + GSPE (p < 0.05). These findings suggest that GSPE could be useful as a supplement to alleviate MP-induced toxicity in rats.

Biological green synthesis of gold and silver nanoparticles

Sur, Ujjal Kumar Techno-Press 2014 Advances in nano research Vol.2 No.3

Nanomaterials synthesized by natural bioresources such as microorganisms, animals and plants in nature can also be synthesized in laboratories even on large scale. This is considered as an attractive prospect for eco-friendly or so-called green synthesis. Development of eco-friendly synthesis of biocompatible nanoparticles and their potential biomedical applications introduces the concept of nanobiotechnology. The lower cost and lesser side effects as compare to chemical methods of synthesis are the main advantages of biosynthesis. This review article demonstrates the role of various biological resources e.g. bacteria, fungi, actinomycetes, plant leaves, fruits and honey as well as animal tissues for the synthesis of nanoparticles mainly gold and silver with an overview of their potential applications.

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.