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Biochemical Changes in the Pumpkin Seeds during Germination Part Ⅰ. Studies on the Lipid Methabolism
CHO, Sung-hwan,신기성 慶尙大學校 1984 論文集 Vol.23 No.2
호박종자를 발아시키는 동안, 지질, 구성지질성분 및 지방산의 생화학적인 변화를 조사하였다. 발아중 triglyceride는 감소하고, 유리지방산함량을 증가하였으며 불포화지방산의 함량비가 감소하였다. 발아된 종자에서 추출. 정제한 lipase activity는 5일째 최대값을 보였으며, 지질함량은 발아전기간을 통하여 감소하였다. 아울러, 발아종자로부터 isocitritase 및 malate synthetase의 활성을 확인할 수 있었고, 이 효소들의 작용으로 지질의 일부가 탄수화물로 전환되는 것을 추정할 수 있었다. 한편, amylase activity는 수용성 당분의 증가와 일치해서 발아 5일까지 증가하였다. The compositional and quantitative changes of lipids and fatty acids in the pumpkin seeds during germination were investigated. During germination triglycerides decreased while free fatty acids increased. Lipase activity reached a maximum on the fifth day increased in accordance with lipid loss in the germinated seeds. Storage lipids were converted to sugars with high efficiency. The primary stage in lipid utilization was supposed to be hydrolytic fission under the action of lipase. On the other hand, amylase activity continued to increase through the seed germination up to 5 days and paralleled the increase in solube saccharides.
원전건설의 성공적인 시공을 위한 핵심성공요인(CSFs) 도출
신기성,방성덕,김경석,김형관,Shin, Gisung,Bang, Seongdeok,Kim, Kyeongseok,Kim, Hyoungkwan 한국건설관리학회 2017 한국건설관리학회 논문집 Vol.18 No.1
1971년 우리나라 최초의 원자력발전소인 고리 1호기가 착공되어 2015년 현재 24기가 가동 중에 있으며 4기가 건설 중으로 약 40여 년간의 원자력발전소 건설 역사 동안 원전 건설의 성공적인 시공을 위한 CSFs 도출에 관한 연구는 아주 미흡한 실정이다. 본 연구에서는 시공단계에서 원전 건설의 성공적인 시공을 위한 CSFs를 도출하기 위하여 기존 연구에서 제안된 원전 및 일반 건설의 성공요인과 고찰한 원전 건설의 시공요인을 바탕으로 원전 전문가와 포커스 그룹 인터뷰를 실시하여 원전 건설의 성공적인 시공을 위한 CSFs를 도출하였다. 포커스 그룹 인터뷰 결과의 검증을 위하여 현재 원전 건설 프로젝트에 참여하고 있는6 14명의 실무 전문가들의 설문조사를 통해 도출한 CSFs의 유용성을 검증하였다. 설문 결과 분석을 통해 합리적인 공사비산정기준 수립, 원전 건설경험 인력 관리시스템 구축 및 활용, 경쟁력 있는 우수 협력업체 발굴 및 육성 방안 마련 및 검사 절차 개선 등으로 작업 대기시간의 최소화 방안 등에 대해 우선 검토 및 개선이 이루어져야 함을 도출 하였다. The construction of the first nuclear power plant (Kori #1) in Korea started in 1971, Korea operates 24 nuclear power plants and is constructing 4 in 2015. During about 45 years of construction experience, insufficient studies have been investigated for the identification of critical success factors(CSFs) for nuclear power plant construction. Based on literature reviews and focus group interviews, this study presented a list of CSFs for construction of nuclear power plants. A survey for validating the results of CSFs was conducted with 164 experts. This study indicates that attentions should be placed upon the lowest price-based contract awarding policy, the need for reasonable pricing standard implementation, database development, and deployment for experienced nuclear power plant construction workers, identification and nurturing of competitive subcontractors, and minimization of lag times in construction activities.
趙成桓,辛基成 慶尙大學校 1985 論文集 Vol.24 No.1
Recently increased attention has been given to utilization of agricultural waste products to produce food, feed, fertilizer and as a raw material in home and foreign countries. Such utilization could not only help maximize resources but at the same time minimize waste disposal problems. On this purpos, studies were conducted to investigate the possibility of utilizing of agricultural waste seeds-gourd, cucumber, peach, citron and hardy orange. The results determined could be summarized as follow: 1. The waste seeds contained 16-32% of crude protein, 25-46% of crude fat. Determined food energy values averaged 589kcal/100g. Especially, Peach seed were contained higher content than other waste seeds in crude protein and crude fat. 2. Of the oil charcteristics, iodine value was in the range of 100-154, saponification value was in the range of 124-188 and acid valve was about 1.1. 3. The seeds were found to have valuable amounts of essential minerals. The content of iron in gourd. cucumber and citron seeds were in the range of 48-90ppm and the content of copper. zinc and calcium were plentyful than that of other food resources. 4. The lipid fractions obtained by silic acid column chromatography were mainly composed of over 87% neutral lipid, whereas the content of glycolipid and phospholipid were 1.0-5.3% and 1.5-7.3% respectively. 5. Among the neutral lipid in total lipid, triglyceides were predominant (68.7-78.1%) with smaller amounts of the others. Among the glycolipids, esterifed steryl glycosides (41.2-52.4%), cerebrosies (20.8-28.6%) and steryl glycosides (12.7-24.3%) were the most abundant and others were present as minor components. Of the phospholipids, phosphatidyl ethanolamine, phosphatidyl choline and phosphatidyl serine, and phosphatidyl glycerol were the major components. 6. The major fatty acids in tile total lipids were linoleic(41.6-67.4%), ofeic (14.5-40.7%) and paimitic (7.3-23.3%) acids. The contents of the unsaturated fatty acids were more predominant than saturated fatty acids. 7 .Among the changes of nitrogen compounds, the contents of the soluble protein-N (48.3-65.9%) was the most abundant, whereas insoluble protein-N was slightly higher than soluble protein-N in the hardy orange seed. Peptide protein-N was contained as minor contents (1.8∼4.9%) except citron seed (11.7%). 8. TILe major amino acids of the these seed proteins were glutamic, arginine, aspartic, g1ycine and leucine, and the essential amino acids except tryptophan were detected. 9. It has been identified by SDS-disc electrophoresis that peach seed protein showed 7 bands and the others showed 6 bands. Compared with standard substances, the molfcular weight of the main protein in the gourd, cucumber, peach, citron and hardy orange seeds were estimated to be 44,000, 47, 500, 43,500. 44,500, 46,000 respectively.