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자연과 실험집단내 Drosophila melanogaster 제2염색체의 유전적 변이성에 대한 비교 연구
손성곤,최영현,이원호 한국환경과학회 1994 한국환경과학회지 Vol.3 No.4
The genetic variabilities of second chromosomes concealed Sasang natural and experimental populations of Drosophila melanogaster have been analyzed. The experimental population was composed of D.melanogaster which had the lethal-free second chromosome collected from Sasang natural population in 1982. The results were as follow; The mean frequencies of deleterious genes were estimated to be 33.33% in Sasang natural population and 31.72% in experimental population. The allelism rates in lethal genes isolated from the natural and experimental populations were calculated to be about 0.95% and 12.28%, respectively. The allelism rates between lethal genes isolated from the natural population and those of the experimental population were calculated to be about 0.01%. The mean values of elimination by frequencies of deleterious genes and allelism rates were 0.0011 in the natural population and 0.0124 in the experimental population. The frequencies of phenotypic sterility of males in the natural and experimental populations were estimated to be 1.49% and 1.36%, respectively. The frequencies of genotypic sterility of females and males were estimated to be 0.90% and 1.80% in the natural population, and that of males was 2.38% in the experimental population.
국가 대표급과 제주도 고교 대표급 수영선수들의 그랩 스타트의 운동학적 분석
김철원,김승곤,오만원,임상용,김성찬,이창준,남사웅,이세형,류재청,신석종,김세민 濟州大學敎 體育科學硏究所 1998 체육과학연구 Vol.4 No.-
The purpose of the study was to undertaken to analysis the Grab starting technique between national representive team(3) and Cheju's representive team(3) with 3D cinematography. The conclusions obtained were as follows: Cheju's showed more elapsed time than national representive team on starting block. and more vertical than horizontal direction of COG position, more concentrated vertical velocity & acceleration than forward direction. Therefore It is necessory for cheju's to train balanced trust force in horizontal and vertical direction in grab starting technique.
김철원,임상용,김승곤,오만원,김성찬,이창준,남사웅,이세형,류재청 濟州大學敎 體育科學硏究所 1996 체육과학연구 Vol.2 No.-
The study was undertaken to analysis, evaluate, and prescribe the annual effect of training of periodically anaerobic and erobic motor ability for Che-Ju representive team of elementary, middle and high school athletes, first the performance can be obtained when it was prescribed proper training after analysis of physical fitness by each events, second individually fitness scientific analysis. prescription. proper management of athlete will be necessary to apply.
제주 우수 육상경기 선수들의 년중 훈련효과 분석 및 처방
김철원,임상용,김승곤,오만원,김성찬,이창준,남사웅,이세형,류재청 濟州大學敎 體育科學硏究所 1996 체육과학연구 Vol.2 No.-
The study was undertaken to analysis, evaluate, and prescribe t h e annual effect of training of periodically anaerobic and aerobic motor ability for Che-Ju representive team of elementary, middle and high school athletes. first. the performance can be obtained when it was prescribed proper training after analysis of physical fitness by each events. second, individually fitness. scientific analysis. prescription. proper management of athlete will be necessary to apply. In addition to physiology aspect, it is essential to consider sport biomechanics. sport psychology when we prescribe specific events and necessary approach in demension coach-athlete-researcher for individual.
Extrusion Limit Diagram of Mg Alloy by Using Finite Element Method
Lee, Sang Kon,Lee, Seong Yun,Lee, In Kyu,Jeong, Myeong Sik,Jo, Yong Jae,Kim, Da Hye,Lee, Jae Wook,Lee, Kyung Hun Trans Tech Publications, Ltd. 2014 Key Engineering Materials Vol.622 No.-
<P>In order to prevent the surface defect in the magnesium alloy extrusion process, it is important to set an appropriate process condition. The extrusion limit diagram is very useful to achieve the maximum extrusion speed without surface defect. In this study, the extrusion limit diagram for the magnesium alloy extrusion is constructed by using extrusion experiment and finite element analysis. For finite element analysis hot compression test is carried out to obtain the effective stress and stain curves according to the various strain rates and temperatures. The effectiveness of the constructed extrusion limit diagram is verified through the porthole extrusion experiment for producing the magnesium alloy bumper beam.</P>
Lee, Seong-Kon,Kim, Kyung-Hwan,Kwon, Moo-Sik,Hwang, Young-Soo 한국응용생명화학회 2001 Journal of Applied Biological Chemistry (J. Appl. Vol.44 No.1
An ${\omega}-3$ fatty acid desaturase gene which is involved in de novo synthesis of -Iinolenate was isolated from cDNA library of Perilla frutescens. A cDNA library was constructed with mRNA extracted from perilla seeds of 12 DAF. The cDNA clone consisting of 1317-bp open reading frame encoding 438 amino acids with a relative MW of 50kDa, was isolated and showed 65-83% similarities to other known genes. This cDNA is deduced to encode a plastidal ${\omega}-3$ fatty acid desaturase based on the fact that it has higher homology to plastidal ones than to microsomal ones and its N-terminal sequence shares several characteristics of transit peptides of chloroplast proteins. Southern blot analysis of genomic DNA indicated that more than one gene or alleles for ${\omega}-3$ fatty acid desaturase are present in the genome of perilla. Northern blot analysis showed that the ${\omega}-3$ fatty acid desaturase gene is mainly revealed in early developing seeds and has different expression patterns depending on tissue types compared to the microsomal ones.
(Seong Kon Lee,(Kyung Hwan Kim,(Moo Sik Kwon,(Young Soo Hwang 한국응용생명화학회 2001 Journal of Applied Biological Chemistry (J. Appl. Vol.44 No.1
An ω-3 fatty acid desaturase gene which is involved in de novo synthesis of -linolenate was isolated from cDNA library of Perilla frutescens. A cDNA library was constructed with mRNA extracted from perilla seeds of 12 DAF. The cDNA clone consisting of 1317