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김갑식(Kab Sig Kim),손종현(Jong Hyeoun Son),최광태(Kwang Tae Choi) 한국식물학회 1990 Journal of Plant Biology Vol.33 No.2
In order to characterize the chloroplasts of Korean ginseng as a semi-shade plant and radish as a sun plant, effects of growth light intensity on photosynthetic electron transport (PS) activity in chloroplasts and superoxide (O_2·^-) production in thylakoid membrane by irradiation were investigated. High-light chloroplasts of both plants showed higher PS activities than those grown under low growth light intensity. High PSⅡ and low PSⅠ activities in ginseng chloroplasts (ratio of PSⅡ/PSⅠ:1.1) were observed, but radish chloroplasts showed low PSⅡ and high PSⅠ activities (ratio of PSⅡ/PSⅠ:0.3). PSⅡ activity of both plants was little affected by temperature in ranges of 15-35℃. Activities of whole-chain (PSⅡ+Ⅰ) in ginseng and PSⅠ in radish were increased at high temperature (40℃). Preincubation of chloroplasts at 40℃ during 30 min, as a mild heat stress, caused rapid decrease in PSⅡ and PSⅡ+Ⅰ activities of both plants. However PSⅠ activity was not decreased in ginseng and rather increased in radish. O_2·^- production (NBT reduction) in Mehler reaction in the thylakoid membrane was inhibited by DCMU in both plants. DMBIB inhibited O_2·^- production in ginseng, but radish was insensitive to DMBIB. Electron flow system in ginseng thylakoid membrane was more susceptible to damage of photooxidation than that of radish.
Kim, Kab-Sig,Park, Ui-Sun,Choi, Kwan-Sam,Choi, Kwang-Tae The Korean Society of Ginseng 1995 Journal of Ginseng Research Vol.19 No.2
The complete open reading frame (ORF) of o-subunit of the $F_1$ ATP synthase (atPA) in Korean ginseng mitochondria was identified by the sequence similarity with atPA genes in other plant mitochondria. The sequence alignment showed that the common translation initiation codon, ATG, in plant genes was replaced with GTG valid codon in Korean ginseng. The atPA gene from GTG to TGA termination codon was 1524 nucleotides long, and the sequence homology of nucleotides and deduced amino acids revealed high values of 92~97%. A deletion event of 6 nucleotides was observed at the 1468th nucleotide from the GTG in Korean ginseng, in contrast to that at the 1450th in other plants such as pea, common bean, soybean, sugar beet, and radish. An unidentified open reading frame (on7) was observed upstream of atmA ORF. No other ATG as an initiation codon was detected in the region between off and atmA ORF in Korean ginseng, although a pyrimidine cluster "TTTTCTTTT" was located in this region as in Oenothera and maize genes. It could be supposed that GTG codon in atpA gene of Korean ginseng mitochondria would act as an initiation codon as in microbial genes.ial genes.
장중식(Joong-Sig Jang),안병근(Byung Gen An),최병갑(Byung-Kab Choi),이천희(Cheon Hee Yi) 한국정보과학회 1988 한국정보과학회 학술발표논문집 Vol.15 No.2
현재까지 많은 내부정렬 알고리즘이 제시되었지만 실제구현이 가능하고 효율적으로 처리할 수 있는 병렬 알고리즘은 많지 않으므로 본 논문에서는 새로운 병렬 알고리즘을 제시하며 system의 성능향상을 위해 공유메모리 내에서 고려 되어야할 요소를 개선하였다. [1, 4, 9, 10] 완전이진트리의 병렬 알고리즘과 binary tree 및 matrix와 관계되는 여러 계산을 데이타의 검색 분류 등에 적용할 수 있으며 graph에서 발생되는 시간 복잡도(time complexity)와 공간복잡도(space complexity)문제를 인접 리스트로 나타내어 임의의 마디와 갯수를 double adjacency list로 표현하므로써 이와같은 문제점을 해결하였다.