녹두 발아중 분획한 단백질의 전기영동 패턴의 변화

조성환,표광호 한국농화학회 1989 Applied Biological Chemistry (Appl Biol Chem) Vol.32 No.3

Changes of protein contents and amino acid composition and SDS-PAGE pattern of protein of mung bean which were germinated in dark at 25℃ for 6 day. The total protein contents gradually decreased during germination and the contents of each fractionative soluble proteins were increased shortly after the soaking of mung bean and gradually decreased during the germination afterwards. SDS-PAGE of albumin fraction showed 18 bands, and during the germination the most of bands were diminished or disappeared. But protein bands at 24,000, 40,000, 45,000, 70,000 dalton position remained until 6th day of germination. SDS-PAGE of globulin fraction showed 6 discrete bands, and during the germination the protein band at 45,000 dalton position disappeard. But the protein bands at 14,000∼25,000 dalton position did not change during the period. SDS-PAGE of globulin fraction showed 10 discrete hands, and during the germination the bands of 45,000∼70,000 dalton become diminished or disappeared. But the bands of 30,000, 60,000 dalton did not change throughout the germination period.

Effect of Partial Replacement of Fish Meal with Squid Liver Meal™ in the Diet on Growth and Body Composition of Juvenile Olive Flounder (Paralichthys olivaceus) during Winter Season

조성환,이상민,최철영,민병희,허성범,조재윤,이상목,박범희,박인석 한국수산과학회 2005 Fisheries and Aquatic Sciences Vol.8 No.2

We evaluated the effects of the partial dietary replacement of fish meal with squid liver mealTM on the growth and body composition of juvenile olive flounder Paralichthys olivaceus during the winter season. Twenty-five fish with an initial body weight of 23 g per tank were distributed among 12,250 L flow-through tanks. The experimental diets, which were designated SLM5, SLM10, and SLM15 diets, were prepared in triplicate along with control diet by replacing 5, 10, and 15% of mackerel fish meal with squid liver mealTM, respectively. The weight gain and specific growth rate of flounder that were fed the control and SLM5 diets did not differ from those of the fish fed the SLM10 diet, but they were significantly (P<0.05) higher than those of the fish fed the SLM15 diet. The feed efficiency ratios for the flounder that were fed the control, SLM5 and SLM10 diets were significantly (P<0.05) higher than for the fish that were fed the SLM15 diet. However, the protein efficiency ratio for the flounder was not significantly affected by the experimental diets. The crude protein, crude lipid and ash content, and blood chemistry of the flounder were not significantly affected by the experimental diets. Therefore, the replacement of up to 10% of dietary fish meal with squid liver mealTM can be made without a reduction in growth or a deterioration of the feed efficiency of juvenile olive flounder during the winter season.

Effects of Alternate-Week Feeding Strategies on Growth and Feed Efficiency Ratio of Juvenile Nile Tilapia Oreochromis niloticus in a Recirculating System

조성환 한국수산과학회 2005 Fisheries and Aquatic Sciences Vol.8 No.3

The effects of alternate-week feeding strategies on growth and feed efficiency ratio of juvenile Nile tilapia were investigated in a recirculating aquaculture system. Twenty fish initially weighing 25.5 g were randomly distributed into each of 18 tanks to conduct three replicates for each of six different feeding strategies. Weight gain of fish in the control that were fed daily for 6-week feeding trial was significantly higher than those of fish subjected to various alternate-week feeding regimes. Weight gain of fish that were starved for 3 weeks and then fed daily for 3 weeks (3WS+3WF) was not significantly different from that of fish, starved and fed daily for alternate 1-week period during the trial (1WS+1WF), but was significantly higher than those of fish starved for 2 weeks, and fed for 2 weeks (2WS+2WF); fish starved for 4 weeks and fed for 2 weeks (4WS+2WF); and fish fed for 5 weeks and fed for 1 week (5WS+1WF.) The amount of feed supplied to fish in the groups of 1WS+1WF and 3WS+3WF was significantly lower than that fed to fish in the control group, but significantly higher than the amount feed supplied to fish in the other three groups. Feed efficiency ratio for fish in the control group did not differ from that for fish in the groups of 1WS+1WF, 2WS+2WF and 3WS+3WF, but was significantly higher than that for fish in the groups of 4WS+2WF and 5WS+1WF. In conclusion, juvenile Nile tilapia that were subject to starvation for 1 to 5 weeks did not exhibit compensatory growth sufficient to attain the same weight as fish fed daily for 6 weeks. In addition, fish subjected to starvation exhibited low feed efficiency ratio compared to fish fed daily, which were probably attributable to poor weight gain.

신바람 나는 십대-지금 고백해

조성환 우리신학연구소 2002 갈라진 시대의 기쁜소식 Vol.- No.566

The Effects of Different Feeding Strategies on the Growth of Young Nile tilapia, Oreochromis niloticus L., in a Freshwater Recirculating System during Summer

조성환,조재윤 한국수산과학회 2005 Fisheries and Aquatic Sciences Vol.8 No.1

We evaluated the effects of different feeding strategies on the growth of young Nile tilapia, Oreochromis niloticus L., in a freshwater recirculating system during summer. Each of twenty fish (Mean body weight±SD; 37.7±0.10g) were randomly distributed into each of 24 tanks. Eight treatments were prepared in triplicate. Control fish were hand-fed commercial feed twice daily without starvation. The other seven treatments employed different feeding and starvation strategies ranging from 1 day starved and 1 day fed (1DS+1DF) to 7 days starved to 7 days fed (7DS+7DF). All fish survived to the end of the 44-day feeding trial. The amount of food supplied was highest for the control fish in the control. Food supplied to fish in the 3DS+3DF and 4DS+4DF treatments was significantly lower than that of fish in the 1DS+1DF and 2DS+2DF treatments, but significantly higher than that of fish in the 5DS+5DF, 6DS+6DF and 7DS+7DF treatments. The weight gain of control fish was significantly higher than that of fish in other treatments. Feed efficiency ratio (FER) for fish in the 7DS+7DF treatment was significantly higher than that of fish in the control group, but it did not differ from that of fish in the 1DS+1DF and 2DS+2DF treatments. We concluded that young Nile tilapia raised with different starvation and feeding regimes during the summer in a freshwater recirculating system did not catch up in growth to fish fed daily. However, the enhanced FER of Nile tilapia in the 7DS+7DF, 2DS+2DF, and 1DS+1DF treatments partly explains the compensatory growth of the fish, although their weight gain was relatively low.

원통형 용기의 비정상온도해석

조성환,전운학,이흥주 대한기계학회 1979 대한기계학회논문집 Vol.3 No.4

Temperature distriburion in a hollow chlinder has been analyzed mathematically. Unsteady condition considered assumed a constant heat flux input from the inside. The results are compared with experimental results of surface temperature rise of a gun barrel during continuous firing. Their agreements are acceptable. Effects of various dimensionless parameters on the surface temperature rise are discussed. For small Biot numbers, the external survface temperature approaches more rapidly to the steady temperature. Temperature difference between internal and external surfaces becomes greater for small Biot number. Steady solution assumed that the gas temperature inside the cylinder varies periodically. Relative amplitude and phase angles between the gas temperature and the internal or external surface temperature are obtained. Phase angles become smaller for large radiancy of gas temperature variation, small external Biot number, or large internal biot number. Relative amplitudes become samller as radiancy of gas temperature variation and internal Biot number become smaller. or external Biot number becomes larger. The solution obtained in this paper can be applied to gun barrels, heat pipes used in heat excangers, and reciprocation engines.

신바람 나는 십대-그분이 오시는 이유

조성환 우리신학연구소 2002 갈라진 시대의 기쁜소식 Vol.- No.562

Ethylene Glycol 중독

조성환 대한수의사회 1986 대한수의사회지 Vol.22 No.11

시야 결손을 초래한 접형골동 점액류종 : 증례 보고 A Case Report

조성환,조경근,이길송,지철,박춘근,이상원,최창락 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.10

A very rare case of shpenoid sinus mucocele is presented. A 17-year-old girl who complained of sudden loss of vision was diagnosed to have a sphenoid sinus mucocele by computerized tomogram(CT) and magnetic resonance imaging(MRI). MRI revealed high signal intensity in the shenoid sinus either on T₁-weighted image(T₁WI) and on T₂-weighted image(T₂WI). The mucocele of sphenoid sinus was removed by transsphenoidal approach.

Analysis of Ground Heat Loss in Ondol Heating Systems

조성환,김관호,Cho, Sung-Hwan,Kim, Kwan-Ho 대한설비공학회 1978 설비저널 Vol.7 No.3

온돌 난방계통에서 지면을 통한 열손실을 수학적으로 등각사상과 변수변환방법을 사용하여 해석하였다. 2차원 및 3차원 해석 결과를 얻었다. 난방되는 주택은 직사각형이라고 가정하였다. 그림 2를 사용하여 평균 지면 열손실을 구할 수 있다. 열 특성치가 열 손실에 미치는 효과에 대하여 설명되었다. 열손실을 구하는 수치적 보기를 주었다. Heat loss to the ground in ondol heating system is analyzed mathematically using conformal mapping and variable transformations, Both two-and three-dimensional systems are analyzed. Heated house is assumed to be rectangular shape. Mean value of heat loss to the ground can be obtained using Figure 2. Effects of thermal parameters to heat loss are discussed. Numerical examples are also given.