봄무우와 겨울무우 묘종의 저온처리에 의한 당과 아미노산의 함량 및 단백질유형의 변화

김우전 水原大學校 大學院 1994 국내석사

The purpose of this study was to identify the physiological and biochemical difference between spring radish and winter radish during the cold treatment, ABA treatment and salt treatment. The stressed radishes were eight slightly grown or not grown at al. During the cold treatment, the content of amino acids was slightly higher than the untreated ones, and varied more in cotyledons than in hypocotyl. The content of amino acids in cotyledons and in hypocotyls of spring radishes was increased up to 10 hours, but those of winter radishes were decreased slightly during the cold treatment. The SDS-PAGE analysis shows that the total protein patterns of spring radishes were a little different from those of winter radishes. The 14 kD and 49 kD of protein were induced in response to the cold treatment. The two proteins were soluble and not precipitated after boiling for 1 hour. This results confirmed that the 14 kD and 49 kD protein were boiling stable proteins. The content of reducing sugars was not changed, in contrary, the content of sucrose was increased significantly during the cold treatment. The results of ABA treatment were similar to these of the cold treatment, but the induced proteins of the salt treatment were not the same as those of the cold treatment and ABA treatment. The 21 kD and 23 kD of protein were induced during the salt treatment. This results show the difference from the reports of others, which the cold treatment, ABA treatment and salt treatment were responsible for the induction of the same proteins The conclusion of the research is that the 21 kD and 23 kD of protein were specific for stress and the 14 kD and 49 kD of protein were responsible for the cold treatment and ABA treatment.

인터넷 書店 利用者의 圖書購買 行動 硏究

金祐塡 慶熙大學校 言論情報大學院 2000 국내석사

韓.日.美國에서 發生되는 一部 Viral zoonoses에 관한 醫學統計學的 硏究

김우전 建國大學校 1991 국내석사

The author intended to a comparative medical statistical study and epidemiological pattern on the incidence of epidemic encephalitis(flaviviruses), epidemic hemorrhagic fever and rabies in the viral-zoonoses among the Korea, Japan and United States of America during the period from 1979 to 1988. Following summary could be obtained: 1) The highest incidence rate of epidemic encephalitis in korea from 1979 to 1988 was 3.04 per 100,000 of 1982, that of Japan was 0.06 of 1979 and that of U.S.A. was 0.54 of 1979 2) Chronological observation on highest incidence rate of epidemic hemorrhagic fever in Korea from 1979 to 1988 was 0.19 per 100,000 of 1979. 3) The rabies in man and animals were high incidenced in 1970's than 1980's, but after 1980 tend to be rapidly decreased, as a eradicated status in Korea, and that of U.S.A was trend to be increased of animal cases of rebies. 4) Geographically distribution of incidence of epidemic encephalitis was confirmed to the area of western side of korea, that of epidemic hemorrhagic fever was eastern side and rabies was along the mountain-range in korea. 5) In regard of age distribution, 87.63% of epidemic encephalitis(Japanese) confirmed cases were occurred less the 19 years old groups in korea, that of epidemic hemorrhagic fever was over 30 to under 59 years old groups, respectively.

地方自治時代의 住民參與 活性化方案에 관한 硏究 : 光州直轄市 事例를 中心으로

김우전 全南大學校 1991 국내석사

The term citizen participation has evolved without a general conseus on who the citizens are, and how and with what result they participate. However, many consider citizen envolvement to be a phenomenon of the 1960's, and various types of citizens participation are commonly thought to be antithetical to much of public administration theory and practice. The purpose of this study is to examine the theoretical background of citizens participation in public administration particularly concerning with Korean local administration and to suggest a model for citizens participation that are appropriate to Korean administrative situation. The contents of this thesis would be summarized as follows: Chapter one is the introduction, including the purposes, method and scope of the study. Chapter two is the theoretical examination of citizens participation in public administration, Chapter three and four reviews the present systems of citizens participation in Kwangju city and suggest a model for revitalizing it. Chapter five is the conclusion of the study. To sum up, the role of citizens participation in Korean local administration has been ignored, however in the years ahead, the necessity and significance of citizens participation in local administration will be increased.

銅-텅스텐과 銅의 摩擦熔接시 中心部 加工에 따른 熔接特性에 관한 硏究

金佑典 忠南大學校 2000 국내석사

The study deals with the strength of weld zone, properties of fracture and the organization of weld zone which is derived from the variation of diameter and upset pressure when Cu-W and Cu with the each center hole of diameter 2mm, 4mm, 6mm, 8mm and depth 8mm is welded under the fixed welding conditions of revolution 2000rpm, friction pressure 45MPa, upset time 5.0sec, pressure time 0.6sec. The experiment was made upon the variations of upset pressure 100MPa and 150MPa. The result are summarized as below: 1. As the result of tensile test, the maximum tensile strength in the drilling registers 314MPa when the upset pressure is 150MPa and also the hole diameter 2mm. It exceeds 310MPa in base metal(Cu) tensile strength. 2. As the result of shear test, when the upset pressure is 150MPa and the diameter 2mm, the maximum tensil strength register 314MPa and it corresponds to about 95% of base metal(Cu) shear strength (196MPa). 3. According to the SEM analysis of weld zone, the minute W grain. are mixed mechanically in the inside of Cu near the weld zone. Especially when the diameter of hole with the highest strength is 2mm, the even minuter and more grains are found to be mixed irregularly.

抛物線船形의 造波抵抗

김우전 서울大學校 大學院 1985 국내석사

AN EXPERIMENTAL AND COMPUTATIONAL STUDY OF LONGITUDINAL VORTICES IN TURBULENT BOUNDARY LAYERS

김우전 University of Iowa 1991 해외박사

The experimental and computational study of longitudinal vortices in turbulent boundary layers are reported. Three types of flow were considered. In the first, flow in a curved duct with a 90 degree bend was measured and calculated to investigate a naturally occurring longitudinal vortex near the corner of the convex (inside) wall. In the second, contra-rotating (common-up and common-down) pairs of vortices artificially introduced in a zero-pressure gradient boundary layer were calculated and compared with experiments to see the behavior of longitudinal vortices and their modification of otherwise two-dimensional turbulent boundary layer. Finally, the same configuration of vortices were introduced on either the convex or the concave wall of the 90 degree bend duct to investigate the joint effects of the pressure gradient and streamwise curvature on the longitudinal vortices in turbulent boundary layers along curved surfaces. In the experimental study, a five-hole pressure probe and a Preston tube were employed to measure three mean-flow velocities and wall shear stresses. All Reynolds stresses but one (vw) were documented using a two-sensor hotwire probe. In the computational study, a numerical method was applied to solve Reynolds-averaged Navier-Stokes equation. The conservation equations of the fluid motion were obtained by transforming the dependent variables, namely, coordinates as well as the dependent variables, the velocity components. The velocity components are aligned with algebraically generated non-staggered (collocated) regular grids. The governing equations were discretized using the so-called 'finite-analytic' method and then solved using PISO-like velocity-pressure decoupling technique. For turbulence closure, the two-layer turbulence model was employed. A semi-empirical, analytic vortex model is proposed for the computational study and is confirmed to be very useful. Extensive comparisons are made between calculations and experimental data for a naturally occurring longitudinal vortex near the convex wall of a curved duct and artificially introduced vortices in the flat or curved turbulent boundary layers. The present study clarifies most salient features of flows in which the curvature effect plays an important role in the development and decay of longitudinal vortices. Furthermore, the numerical method employed here describes most of the main features of the flow.

"오픈 소스" 사회현상에 대한 마케팅적인 고찰

김우진 고려대학교 경영대학원 2008 국내석사