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한국 재래피 ( 삼 ) 의 생장 및 양분대사에 관한 연구 2 . 파종 및 예취후 생장 및 질산태질소 함량 변화
전우복,박종만,김동암 ( Woo Bock Chun,Jong Man Park,Dong Am Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.2
This experiment was carried out in order to study the plant growth and change. of nitrate-nitrogen content in the seedlings and ratoon crops of Japanese millet[Echiochloa crusgalli var frumentacea (Roxb.) Wight]. The resultes are as follws. 1. The maximum values of crop growth rate (CGR), relative growth rate (RGR), net assimalation rate (NAR), and leaf area ratio (IAR) occurred earlier than that of leaf area index (LAI) in the plots where seedlings were left to grow without cutting, however, when cuttings were practiced those were observed to appear almost simultaniously with that of leaf area inlet (LAI). 2. The maximum crop growth rate(CGR) of the seedlings appeared at the stage of stem elongation, while that of the ratoon crops occurred in 28 to 35 days after cut. 3. Leaf blade was higher in total nitrogen content but lower in nitrate-nitrogen than leaf sheath and stem. 4. Nitrate-nitrogen content was very high in the early growing stage of seedlings as well as ratoon crops, however, it gradually decreased with aging. Therefore the results of this experiment suggested that these would be a danger of nitrate poisoning to ruminants in case of feeding large amount of Japanese millet in early stage of growth.
파종시 질소시비가 월동전후 오차드그라스의 생장 , 탄수화물 및 조단백질 함량에 미치는 영향
전우복,김동암,박종만 ( Woo Bock Chun,Dong Am Kim,Jong man Park ) 한국축산학회 1986 한국축산학회지 Vol.28 No.3
This experiment was carried out to evaluate the effect of nitrogen fertilization on the rate of growth and the accumulation pattern of total water-soluble carbohydrates and crude proein in orchardgrass cv. potomac before and after winter. Plants were grown in the pots under different levels of nitrogen fertilizer (3㎏, 6㎏ and 10㎏ per 10a) from 21 September, 1979 to 25 April, 1980 at experimental field of Chonnam National University in Kwangju. The resultes obtained were as follows: 1. Plant heights before winter were increased continuously and reached its peak an about December 5 with the average temperature of 5℃ and then decreased. However, plant leaves, tillers and dry matter in the shoots increased until the end of December, below average temperature of 5℃. 2. The total water-soluble carbohydrates (TSC) in the basal tissue before winter accumulated until the end of December, below average temperature of 5℃. The reserved carbohydrates in the basal tissue after winter decreased when new leaf after the start of plant growth emerged and then increased with morphological development. But the content of TSC decreased again after emergence of tiller and then increased. Crude protein content in the basal tissue both before and after winter decreased as plants aged.
이상철,박승우,강진경,안상훈,박인서,문영명,박영년,정재복,전재윤 대한소화기학회 2000 대한소화기학회지 Vol.36 No.4
Spontaneous regression of hepatocellular carcinoma is extremely rare. Up to date, only 17 cases of hepatocellular carcinoma with spontaneous regression were reported in the English literature and there is 1 case of it in Korea. The mechanism of spontaneous regression has been a puzzle. Here, we describes a 70-year-old man with chronic hepatitis in whom spontaneous necrosis of hepatocellular carcinoma occurred and the possibility of spontaneous regression was suggested. He had right upper quadrant pain and computed tomography disclosed a 4 cm-sized hypodense mass at left lobe of the liver. Fine needle aspiration biopsy revealed almost total necrosis with a few scattered naked nuclei showing nuclear hyperchromasia and prominent nucleoli, which was highly suggestive of malignancy. When surgically resected, the specimen showed thick trabecular pattern of tumor with extensive necrotic change, which was a histological appearance of hepatocellular carcinoma. After surgery, the patient has recovered well.
식물 병원성 사상균(絲狀菌)에 결항력(拮抗力)을 갖는 Serratia marcescens CK - 3 의 분리 및 효소적 성질
김광식,김종현,전우복,김영일,이영환,박화성,이재화 한국농화학회 1991 Applied Biological Chemistry (Appl Biol Chem) Vol.34 No.1
Serratia marcescens CK-3, decomposing chitin which is a major component of cell wall in phytopathogenic fungi, was isolated from the continuous cropping rhizosphere of pepper and cucumber and its enzymatic property was examined. S. marcescens CK-3 was found to have antagonistic effects against Fusarium axysporum and Rhizoctania solani and to have complex enzyme systems such as chitinase, laminarinase, and proteinase. The preferable composition of the medium for production of chitinase was found and was as follows : colloidal chitin 1.5%, tryptone 0.5%, glucose 1.0%., peptone 0.2%, MgSO₄·7H₂O 0.1 %, K₂HPO₄ 0.1 %, and NaCl 0.1 % (w/v), pH 6.8. The maximum enzyme production was observed after culture of 72 hours at 30℃ using a medium containing the above chemical composition. The optimal pH and temperature for in vitro activity of chitinase from S. marcescens CK-3 were pH 7.5 and 50℃, respectively. The enzyme activity increased by metal ions such as Ag^+ and Mn^(++).