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장성운 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-
All the world war of the energy. Energy is the resources of national. All the national try to secure of energy. Fossil fuels is drained gradually in the world. But, the world population use energy for comfortable life. The style of energy use is heating, electric generation, vehicle etc. The theoretical efficiency of heat engine is about 45%, and actual efficiency is about 26%. The energy loss of 55% give off to the air and the rest is mechanical energy loss. The heat energy give off to the air is the chief criminal of earth warm. In the steam power plant, The heat energy give off to the air is using for heating warm water. Warm water is supply to home. But heat engine of car, The heat energy give off to the air can not use. The reason, heat engine of car is moving In this study, For electric generating use thermo-electric element. Thermo-electric element is generating the electric from the heat energy give off to the air in car engine. The results are as follows. 1. using thermo-electric element, electric generating is possible from the heat energy give off to the air in car engine exhaust gas. 2. In the experimental equipment, A piece of thermo-electric element is generating of electric 0.2W-3.2W to the temperature range 50℃-290℃. 3. 200 pieces thermo-electric element can apply to the car exhaust gas muffler and can generating of electric 160W-300W. 4. Recharge the generating electric to the battery of car, The generator power of car is decrease about 1/3 and increase car engine power.
Sang‑Wook Kim,Hyeon‑Woo Son,Taek‑Kyun Jung,Young‑Bum Chun,Yi‑Hyun Park,Ji‑Woon Lee,Soong‑Keun Hyun 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.4
The hot deformation behavior of advanced reduced-activation alloy (ARAA) was investigated using hot torsion tests. Thefl ow stress decreased as deformation temperature increased and as strain rate decreased. The fl ow behavior demonstratedthe typical dynamic recrystallization (DRX). Based on the constitutive analysis of peak stress, the activation energy for hotdeformation was found to be 330.3 kJ mol −1 . Peak stress was analyzed as a function of the Zener–Hollomon parameter, andcalculated and experimental values were in good agreement. A DRX kinetic model for ARAA was derived with deformationconditions based on the Avrami-type model. It was confi rmed that the volume fraction of dynamically recrystallized grainsincreased as deformation temperature increased and as strain rate decreased. The necklace structure and grain boundarybulging were observed in the deformed microstructure of ARAA. The suggested DRX mechanism for ARAA during hotworking is discontinuous DRX.
吸入 空氣의 濕度가 Diesel cycle의 性能에 미치는 影響에 關한 理論的 考察
장성운 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-
For calculating theoretical thermal efficiency of Diesel cycle in internal combustion engine, Theoretical thermal efficiency is decided by compression ratio. Compression ratio of internal combustion engine is calculated by stroke volume and clearance volume. The air of stroke volume is constant to the engine mechanism. Air temperature of clearance volume increases adiabatic compression. The moisture in intake air is evaporating by the temperature of adiabatic compression. Moisture evaporating is increased volume in the clearance volume after adiabatic compression. Clearance volume is the intake air and the steam of moisture evaporating. The result, compression rate is increased and thermal efficiency is changed. For calculating, Absolute humidity of intake air increase 0, 5, 10, 15, 20, 25, 30.% The result were as follows. 1, Increase the absolute humidity of intake air in Diesel cycle, moisture is changed to super heated steam by evaporating and increased the volume in the clearance volume and changed compressing rate after adiabatic compression. 2, Pressure increase after adiabatic compression improves the power of engine. 3, The high compressing rate increases thermal efficiency in Diesel cycle. 4, If the moisture increasing mechanism is applied to the intake air, engine power and thermal efficiency is increased and engine is effected a little big size.
배양된 쥐 인슐린종 세포에서 성장인자들에 대한 인슐린 유전자의 발현
김성운,양인명,김진우,김영설,김광원,최영길 경희대학교 유전공학연구소 1989 遺傳工學論文集 Vol.1 No.-
인슐린 유전자 발현의 실험실적 모델로서 쥐 인슐린종 세포(RINm5F cell;rat insulinorraceil)를 이용하여 몇 개의 성장인자에 대한 반응을 조사하고 인슐린 유전자의 활성에 관여하는 상황을 이해하고자 인슐린 유전자의 mRNA를 조사하였다. RINm5F 세포는 glucose 와 EGF 등의 성장인자에 대해 세포분화 및 성장에 자극을 받으며 인슐린, IGF-Ⅰ IGF-Ⅱ등에는 영향을 받지 않았다. 따라서 RINm5F TPVHSMS 생체내 췌도 베타세포의 기능을 대변하기는 어려웠으나 각종 성장인자의 세포내 활성양상을 간접적으로 알 수 있었다. Insulin secretion of RINm5F cells can be stimulated by some of the growth factors, however, not in the same manner compared to pancreatic islet beta cells. We observed that insulin superfamily (insulin IGF-Ⅰ, IGF-Ⅱ) were not affected to insulin mRNA of RINm5F cells, but EGF (50ng/㎖) increased insulin mRNA levels, and dexamethasone (300ng/㎖) decreased insulin mRNA levels in RIAm5F cells. So some of growth factors regulated insulin gene at transcription level in RINm5F cells line.
복수내 Fibronectin, Adenosine Deaminase, Sialic Acid 및 지질의 감별진단적 의의
여승엽,박낭운,조준승 慶北大學校 醫科大學 1990 慶北醫大誌 Vol.31 No.3
복수를 일으키는 질환의 감별진단에 사용하기 위하여, 복수액에서 몇가지 생화학적 지표를 측정하고, 각 지표들의 감별진단적 의의를 검정하여 보았다. 총 39명의 환자로부터 복수액을 채취하였는데, 그 중 16명이 악성종양, 5명이 결핵 그리고 18명이 간경변증 환자였다. Fibronectin과 sialic acid치는, 악성종양성 및 결핵성복수에서 간경변성복수에 비해 각각 유의한(p<0.01) 차이를 나타내었으나, 악성종양과 결핵 사이에서는 유의한 차이를 보이지 않았다. Adenosine deaminase치는 악성종양성, 결핵성 및 간경변성복수 모두에서 서로간에 유의한(p<0.01) 차이를 나타내었다. 또한 복수내 백혈구수, 단백질농도, 포도당농도, lactate dehydrogenase, 지질농도등 기존 생화학적 지표들이 측정치의 분포에 있어 이들 세군 사이에 상당한 중복을 나타낸 반면에 fibronectin, sialic acid, 그리고 adenosine deaminase측정치의 분포는 각각 세군 사이에 명확한 차이를 보여주었다. 이상의 결과로 미루어보아 복수액에서 fibronectin, sialic acid 및 adenosine deaminase를 측정함으로써 원인질환의 감별진단이 더욱 용이하고 정확하게 되리라 사료된다. Trying to find accurate markers to differentiate ascites, several biochemical parameters were measured in ascitic fluids. Ascitic fluid samples from 16 patients with maligancy, 5 patients with tuberculosis and 18 patients with liver cirrhosis were investigated. The levels of fibronectin and sialic acid were significantly higher in malignant and tuberculous ascites than cirrhotic ascites(p<0.01) but showed no significant difference between malignant and tuberculous ascites. The activities of adenosine deaminase in malignant, tuberculous and cirrhotic ascites were significantly different from one another(p<0.01). Fibronectin, sialic acid and adenosine deaminase did not show the significant overlaps among 3 groups while several other parameters-leukocyte, protein, glucose, LDH and lipids analyzed simultaneously in theses samples showed the considerable overlaps. These results suggest that determinations of fibronectin, sialic acid and adenosine deaminase in ascites may improve the accuracy of differential diagnosis of ascites.