專門大學 食品加工科 模型敎科課程 修正開發 硏究

馬相朝,趙德鳳,金東弼,崔春淳,李松周 광주보건대학 1988 論文集 Vol.13 No.-

As a result of research on the present condition of the department relating to food at the junior college as of 1987 in our country, the number of the departments are 23 cases and the full-time professors are 132 persons and the number of students are 3,760 persons. This study can see that our country has attached importance to food science education as fourfold in the number of students comparing with that of 1971. The character of the curriculum is different according to its systems, but it has the subject that need to train the major technicians and graduating students advance into each field. Because of great many of students who are trained in a field of food science, it can be said that further the food industry and the development of food science have good prospects. Food science is recognized as important thing to everyone due to a serious problem of food in accordance with the population growth and gradual scientific propulsion of the national dietary life. With the basis of the analytical about the curriculum of the department relating to the food of university and junior college in internal and external and the result that is analyzed students and teachers' replies by the questionaire, this study makes out a model plan of te curriculum in junior college like table 14. Though the curriculum is ideal and perfective, as if it is not governed well nothing can be obtained, the other way also even though the curriculum is not perfect, if the mystery of management is praciced, a good results can be getting. Especially modern creative way of field practice makes students themselves set up purpose to learn and look for its meaning, and as experimenting and confirming their own thought and ability through solution of problem it helps to get developed and made up theirs own self. Therefore constitution of course of the field pratice is established centering around the experence of students to set studying purpose. It is continuously managed to do the ideal studying by change of a time and demand of society, and also should be recognized to build up ability that judge and decide as theorizing a lot of knowledge on the conceptional and theorical basis. In the way that the department of food processing at a junior college should improve, improvement of educational equipment is urgent, then the cost of equipment should be secured and the curriculum should be improved. Finally, thank for every junior college who cooperate with this study and such study for more better fixed curriculum will be continued after this report. So there will be sufficient results.

微生物에 의한 n-alkanes의 資化와 乳化

마상조,김동필,조덕봉,최옥범 광주보건대학 1996 論文集 Vol.21 No.-

A long-chain n-alkane-using microorganism was isolated from a soil sample, and was identified to belong to genus Acinetobactor. This strain Ma-1 grew on n-alkanes ranging in carbon length from C_(13) to C_(44) as a sole carbon source. This strain could grow on the solid hydrocarbons without addition of any detergents. The growth and the hydrocarbon use were enhanced by the addition of a surface active agent, Plysurf A210G. A strain Ma-I culture isolated in our laboratory has been shown to produce an extracellular biopolymer with emulsifying properties when grown on a mixture of linear hydrocarbons. The substrates supporting good growth gave good polymer production. The polymers recovered from the substrates were found to be complex molecules or mixtures with a protein, a lipid, and a carbohydrate moiety.

잇꽃 Carthamin의 초임계 추출 및 농축

이종민,마상동,한태룡,김공환,임상빈,정인식 경희대학교 생명자원과학연구원 1997 遺傳工學論文集 Vol.9 No.-

Supercritical fluids (SCF) are useful substances that are recently used in bioseparation process. Extraction of carthamin from safflower using supercritical carbon dioxide were examined at various conditions of temperature (35∼40℃), pressure (3000∼5000 psi) and CO₂ flow rate (900∼1200 m/hr). SCF was less effective than solvent methods in carthamin extraction from safflower. Concentration of carthamin was 50% more efficent at the use of alginate beads with 35 g cellulose per column loadings compared to the control (15g cellulose per column loadings).

LMTD Method를 이용한 휜-튜브 열교환기의 성능향상에 관한 연구

김명윤,마상동 서강대학 지역발전연구소 1999 지역발전연구 : 서강전문대 Vol.5 No.2

The purpose of this study is to develop the optimum design program of air cooled fin-tube heat exchanger. Logarithmic mean temperature difference(LMTD) method which is generally acceptable is used to design the air cooled fin-tube heat exchanger. In the conventional heat exchanger design by LMTD method, heat transfer, overall heat exchanger coefficient, and heat exchanger area are calculated by using the inlet and outlet temperature of heat exchanger. The design for the two phase flow in the tube of heat exchanger can be applied to the design of considers by LMTD method.

냉각 Cycle Matching을 위한 핀-관 열교환기의 설계 Program 개발

김재열,마상동,최충현 조선대학교 에너지.자원신기술연구소 1997 에너지·자원신기술연구소 논문지 Vol.19 No.2

The purpose of this study is to develop the optimum design program of air cooled fin-tube heat exchanger. Logarithmic mean temperature difference(LMTD) method which is generally acceptable is used to design the air cooled fin-tube heat exchanger. In the coventional heat exchanger design by LMTD method, heat transfer, overall heat exchanger coefficient, and heat exchanger area are calculated by using the inlet and outlet temperature of heat exchanger. The design for the two phase flow in the tube of heat exchanger can be applied to the design of considers by LMTD method. A performance comparison according to the different refrigerants is provided using R-134a and R-12. As the result of this study, total heat transfer rate of heat exchanger using R-134a were found higher than that of using R-12 for the same operating conditions.

비가림 및 망사 시설재배가 참다래의 수체생육 및 과실품질에 미치는 영향

나양기,마경철,임동근,김병삼,임경호,김월수,이상현,박용서 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

This studies were conducted to investigate the effects of rain shelter and netting on the tree growth, fruit set fruit quality of kiwifruit (Actinidia deliciosa). In rain shelter and net house, shoot falling wasn't occurred by strong wind, and fruit set, fruit weight and also fruit malformation, side flowering increased at the same time. In rain shelter house the increment temperature forced blooming date and increased shoot length, leaf number and diameter but in net house these tendencies were not observed. Relative light intensity of rain shelter house was higher than that of net house with standard of field culture (relative light intensity: 100%). Soluble solid content was higher in rain shelter house, and acid content was higher in net house. With the effect of rain sheltering the occurrence of bacterial bloom rot and canker significantly decreased in both rain shelter and net house but insect injury increased. These data showed that rain shelter house is more suitable for kiwi fruit culture.

형상인식을 적용한 용접 결함의 특징변수 추출

김재열,마상동,오성민,송경석,김양중,김창현,곽이구 朝鮮大學校 機械技術硏究所 1999 機械技術硏究 Vol.2 No.2

In this study, the researches classifying the natural flaws in welding parts are performed using the signal pattern classification method. For this purpose 500MHz storage digital oscilloscope including FFT function and enveloped waveform generator are used and the signal pattern recognition procedure is made up the digital signal processing, feature extraction, feature selection and classifier design. Specially it is composed with and discussed using the distance classifier is based in euclidean distance the empirical Bayesian classifier. In feature extracting, it is performed using the class-mean scatter criteria. And the signal Pattern classification method is applied to the signal pattern recognition problems of natural flaw that is porosity inclusion, slag inclusion, lack of penetration, lack of fusion. center crack, side crack, toe crack. root crack as the planar and volumetric flaw classification problem. According to this results, if appropriately learned the neural network classifier is better acquire the recognition rate of 86.31% above through it is different a little according to domain extracting the feature and the classifier

적외선 열화상 카메라를 이용한 머시닝 센터 주축 열변위에 관한 열해석

김재열,윤성운,임노빈,유신,마상동,양동조,송인석 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

Diagnosis or measurements using Infrared thermo-image hasn't been available. A quick diagnosis and thermal analysis can be possible when that kind of system is introduced to the investigation of each part. In this study, Infrared Camera, Thermo-vision 900 was used in order to investigate. Infrared Camera usually detects only Infrared wave from the light in order to illustrate the temperature distribution. Infrared diagnosis system can be applied to various field. Also, it is more effective to analyze temperature distribution on the machining center main-axis process.

태아용 ECMO 시스템 개발

김재열,유신,마상동,김창현 朝鮮大學校 機械技術硏究所 2001 機械技術硏究 Vol.4 No.1

태아를 자궁외에서 인공양수로 충만한 Chamber에 넣고 막형산화기와 체외순환용 회로를 제대동정맥에 연결함으로서 염소태아의 자궁외 생존 모델을 수립하였다. 염소태아의 자궁외 최장 생존시간은 48시간이었으며, 염소태아의 자궁외 생존을 위한 혈류역학적, 혈액화학적 기초자료를 분석하였다. 태아의 자궁외 생존에 필요한 ECMO 순환 혈류량은 223±15.2㎖/min이었으며 태아생존률 및 태아생존시간에 체온, 마취시간, 태아체중 및 수술 숙련도등이 관계가 있었다. 인공양수를 채운 인공자궁 Chamber와 펌프, 막형산화기, 회로등이 연결된 인공 자궁태반의 프로토 타입을 고안 개발함으로서 동물모델에 의한 추가적인 연구를 가능하게 하였고, 합병증의 연구 및 태아영양공급과 발육문제등을 보완연구함으로서 인간에게 인공자궁태반이 실현될 수 있는 기반연구를 수행하였다. The ECMO system using umbilical cord and membrane type oxygenator which was connected with extracorporeal circulation unit was studied for the development of fetus growth model for goat. Maximum survival time of goat fetus was 48hour and its basic data of blood blow dynamics and chemical compositions were analyzed. Average blood rate required for the extracorporeal circulation was 223±15.2 ㎖/min and survival rate and survival time of fetus was deeply related to body temperature, total anesthetized time, fetus weight and skill for the surgery. The newly developed ECMO model for fetus corrected the problem of previously used ECMO that high pressure pump directly delivered to that fetal heart by installing reservoir bag. By applying the result from this new ECMO model. Further reserach will help to apply the system to human.

고주파로 스펏터링한 SiO₂막의 제조 및 특성

김영진,박욱동,김기완,오상광,마대영 경북대학교 센서기술연구소 1991 센서技術學術大會論文集 Vol.2 No.1

Using RF reactive sputtering method, silicon dioxide(SiO_(2)) thin films have been fabricated on p-type(100) Si wafer. The electrical properties of SiO_(2) thin films have been examined by C-V and I-V measurement. The properties of SiO_(2) thin films on RF power, substrate temperature, O_(2)/Ar+O_(2)ratio and working pressure have been shown differently. The maximum dielectric constant of SiO_(2) thin film was about 2.0 at conditions that the RF power, substrate temperature, O_(2)/Ar+O_(2) and working pressure was 160W, 10%, 250°C and 100mTorr, respectively. This SiO_(2) thin film is expected to be used as the, image sensor blocking layer and TFT gate oxide.