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알코올의 섭취가 흰쥐의 혈액과 간의 지질대사에 미치는 영향
이명숙,김영연,김효숙,김매하,전진순,서진숙,송선미,양영재,윤원손,이미라,이효영,정승현 誠信女子大學校 生活文化硏究所 2004 生活文化硏究 Vol.18 No.-
To investigate the effects of ethanol on the lipid metabolism in blood and liver, twenty one male Sprague Dawley rats had orally taken the 25% alcohol and 50% alcohol by 5g per Kg of weight during 3 weeks after the adjusting period. For the energy balance, 85% sucrose and 45% sucrose was added in control group and 25% alcohol group each. The weight was reduced by alcohol treatment according to the levels, otherwise the weight of liver and heart was little increased in alcohol groups rather than in control without significance. Moreover, RBC, WBC, hemoglobin and hematocrit were increased by alcohol treatment according to the levels without significance. Otherwise, adjusted bilirubin levels by 100g of weight was significantly increased by alcohol treatment dose dependently. Alcohol induced RBC degradation and increased circulated bilirubin because of liver damage. For blood lipid profiles, blood cholesterol was increased in 50% of alcohol group compared to that of 25% and control groups, otherwise, blood triglycerides (TG) was increased by 30% in 25% alcohol groups rather than in control but not significantly different. The hepatic lipid composition, cholesterol levels in alcohol treatment groups was lower than those in control. The hepatic TG was not influenced by alcohol treatment. The two reasons of decreasing hepatic lipids were suggested by 85% sucrose of control for energy balance more synthesized cholesterol and TG than those in 25 or 50% alcohol groups, and by cholesterol and TG could not be synthesized because of liver damage from alcohol.
개선된 다출력 동적 CMOS 설계 방식을 이용한 고성능 32 비트 CLA가산기 설계 및 구현
송근호,방만식,서정훈,한석붕,이효상,김강철 慶尙大學校生産技術硏究所 1997 生産技術硏究所論文集 Vol.13 No.-
In this paper, we designed, implemented and evaluated 32-bit CLA adder with the ENMODL(enhanced NORA Multiple Output Domino Logic) logic style which is new dynamic CMOS logic. The circuit is implemented using 0.8㎛ CMOS double-metal process technology. It operates stably and the addition time is less 3.9 ns. The ENMODL logic style can improve the performance in the high-speed computing circuits depending on the degree of recurrence.
김효정,이미정,지윤의,이규석,송호경 忠南大學校 環境問題硏究所 2002 環境硏究 Vol.20 No.-
대전에 위치한 금병산과 적오산의 식생을 분류하기 위하여 연구가 수행되었다. 총 41개의 조사구에서 식물사회학적 방법으로 조사를 하였다. 이 지역 산림식생은 크게 이차림식생과 조림식생으로 구분 되었다. 이차림 식생은 소나무군락, 상수리나무군락, 팽나무군락으로 구분되었다. 조림식생은 아까시나무군락, 리기다소나무군락, 일본잎갈나무군락, 곰솔군락으로 구분되었다. 본 조사지역에서 출현한 종수는 총 145종이었으며, 가중나무, 개망초, 미국자리공 아까시나무, 족제비싸리 등 총 5종의 귀화식물이 출현하였다. This study was carried out to classify forest vegetation community of Geumbyeongsan and Jeokosan in Daejeon. Employing the releve´ method of Dierssen, 41 plots were sampled. Forest community ws classified as second forest vegetation and afforestation vegetation. The second forest vegetation was classified into six communities such as Pinus densiflora community, Quercus acutissima community, Quercus serrata community, Quercus variabilis community, Quercus aliena community, and Celtis sinensis community. Afforestation vegetation was classified again as Robinia pseudoacacia community, Pinus rigida community, Larix leptolepis community, and Pinus thunbergii community. In the present study area, we found a total of 145 taxa. We found a total of five naturalized plants taxa of Ailanthus altissima, Erigeron annuus, Phytolacca americana, Robinia pseudoacacia, and Amorpha fruticosa.
Methylosinus trichosporium OB3b에서 세포내 메탄자화효소의 활성 측정
송효학,김경태,박성훈,강정미 釜山大學校生産技術硏究所 1996 生産技術硏究所論文集 Vol.50 No.-
메탄자화균을 이용한 지방족 염소화합물의 분해를 위해 메탄자화균의 일종인 Metlylosirus trichosporium OB3b를 배양하고 메탄자화효소의 활성을 5ml vial을 이용하여 여러조건에서 측정하였다. 기절로 propene을 사용하고 생성물인 propene oxide를 가스크로마토그래프(GC)로 분석하였다. 환원력 공급제로 formate가 첨가될 경우 그렇지 않은 경우에 비해 MMO의 활성이 4-5배 가량 높았고, 최적 pH와 온도는 각각 pH 7.0-7.5, 30℃였다. 기질에 대한 포화상수 Km의 값은 ?????mol/L였고 고농도 propene oxide는 활성을 저해하였다. 균체량이 너무 적으면 GC에서의 분석감도에 문제가 있었고 너무 많으면 산소전달이 제한되므로 MMO 활성 측정값이 저하되었다. 분석에 적합한 최적 균체량은 MMO 활성에 따라 달라지지만 대략 0.3∼0.8㎎/ml 정도였다. In order to determine the optimal assay conditions, the activity of the whole-cell methane monooxygenase(MMO) in Methylosinus trichosporium OB3b was measured under various conditions using gas chromatograph(GC). The enzymatic reaction monitored was propene oxidation to propene oxide and the reaction container was 5ml vial with a PTFE-faced rubber septum. When fermate was added as reducing agent, MMO activity was consistently 4-5 times higher compared to the case that fermate was missing. The optimal pH and temperature were 7.0-7.5 and 30℃, respectively. The dependence of enzymatic activity on propene concentration followed Michaelis-Menten kinetic model and the saturation constant(Km) was observed to be ?????mol/L The enzymatic activity was reduced with increasing incubation time or by high concentration of propene oxide. Considering the sensitivity of GC measurement and mass transfer resistance of gas substrates, proper cell density in the present assay system was estimated to be 0.3-0.8㎎/ml.
한천, Sodium Alginate 및 Carrageenan첨가가 유과(부수게)바탕의 품질에 미치는 영향
김중만,전예정,박효숙,송영애,백승화,김명곤 한국식생활문화학회 2005 韓國食生活文化學會誌 Vol.20 No.1
This study was to evaluate effects of agar, sodium alginate and carrageenan on quality of Yugwa(Busuge) base. In the base preparation agar, sodium alginate and carrageenan were added 0.0, 0.1, 0.5, 1.0 and 3.0%(w/w), respectively. Volume, shape, hardness. color(L, a and b value), crude lipid content and sensory evaluation(taste and crispness) of the Yugwa base was measured. Volume of the base was higher than control in case of 0.1~0.5%(w/w) agar, sodium alginate and carrageenan, of which sodium alginate was the highest. Shapes were similar to control. Hardness and crude lipid content was decreased proportional to amount of addition of the three seesweed polysaccharides. the whiteness(L-value) was increased but the yellowness(a-value) and the redness(bvalue) decreased. Taste and crispness were increased in the case of 0.1~1.0%(w/w) of sodium alginate, but agar and carrageenan decreased.
Myopic Bounds for the Random Yield and Nonstationary Stochastic Leadtime Demand Problem
Kim, Keun-Chong,Song, Young-Hyo The Institute of Management Hong-ik University 2001 Hongik business review Vol.4 No.-
The purpose of the current paper is to combine the results of Morton and Pentico^3) Anupindi et al.^4) for the nonstationary stochastic leadtime inventory problem with recent works of Kim^12,13) which considered the production capacity, random yields, and nonstationary demand, and a production planning model under JIT delivery contracts. We can obtain myopic, and near-myopic heuristic upper and lower bounds for the case of nonstationary stochastic leadtime demands with random yields due to the variable production capacity.
ECT (European Compression Technic) System 을 사용한 下顎骨 骨折의 治驗例
金晤煥,申曉根,宋采炫,崔秉河,權泰鎬 全北大學校 齒醫學硏究所 1983 전북치대논문집 Vol.1 No.1
The authors in the Dept. of Oral & Maxillo-facial Surgery.J.N.U Hospital could have the following results after treatment of eight mandibular fractures patients with the E.C.T.(European Compression Technic)System. 1. Accurate reduction of the fractured bone. 2. Minimization of the soft tissue injury during operations. 3. No post-operative intermaxillary fixation was necessary. 4. Good recovery of the occlusion.
쑥갓(Chrysanthemum coronarium L.)으로부터 배당체의 분리
송명종,김세영,송효남,백남인 경희대학교 생명자원과학연구원 2004 硏究論文集 Vol.23 No.-
쑥갓의 지상부를 MeOH로 추출하고, 추출물을 EtOAc, n-BuOH 및 물로 분배, 추출하였다. n-BuOH분획으로부터 silica gel 및 ODS column chromatography를 반복하여 배당체를 분리하였다. 화합물의 화학구조는, MNR 및 MS 등의 스펙트럼을 해석하여 1-o-β-D-glucopyranosyl-3-hexenol으로 동정하였다. The aerial parts of Garland (Chrysanthemum coronarium L.) were extracted in MeOH and solvent fractionated with EtOAc, n-BuOH and water, successively. n-BuOH fraction gave a glycoside compound through application of silica gel column chromatographies including ODS. The chemical structure of the glycoside was determined by the interpretation of several spectral data, including NMR and MS as O-β-D-glucopyranosyl-3-hexenol (1).