http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
권종서(Jong Seo Kwon),김량균(Ryang Gyoon Kim),장영준(Young June Chang),전충환(Chung Hwan Jeon),송주헌(Ju Hun Song) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
In this study, the experimental of the ignition of methan-air mixture by a Hot-surface has been carried out. It was introduced to an experimental method of flame visualization and ignition delay by hot-surface. The flame was visualized using schlieren method, and reliable ignition delay time was obtained by synchronizing PDS and thermocouple. Based on the data obtained through schlieren method, it was found that the flame front of the mixed gas’s initial ignition was first formed at the contact point with the hot-surface and then developed to the nozzle. The P.D.S. could measure to the intensity of the flame luminous and the ignition temperature was obtained by a thermocouple. Reliable ignition delay was determined by synchronizing these two methods.
석탄점화온도의 직접적인 측정에 의한 아역청탄 촤산화 반응율에 대한 실험적 연구
권종서(Jong Seo Kwon),김량균(Ryang Gyoon Kim),송주헌(Ju Hun Song),장영준(Young June Chang),전충환(Chung Hwan Jeon) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5
The experiment was designed to study the coal char oxidation kinetics. The kinetics has been estimated using the Semenov's thermal spontaneous ignition theory adapted to coal char particle ignition temperature. The ignition temperature of coal char particle is obtained by a method of direct measurement of the particle temperature. The ignition temperature is detected by means of a thermocouple which is used as both a heating and a measuring element. The ignition temperatures for bituminous coal YAKUTUGOL have been measured at 4 particle sizes in the range of 0.4 - 1 ㎜. The ignition temperature of the particle increases with the raising of the diameter. The results were used to calculate the activation energy and the pre-exponential factor. As a result, the kinetics are in agreement with coal char kinetics from other investigations.
석탄점화온도의 직접적인 측정에 의한 촤산화 반응율에 대한 실험적 연구
권종서(Jong Seo Kwon),김량균(Ryang Gyoon Kim),송주헌(Ju Hun Song),장영준(Young June Chang),전충환(Chung Hwan Jeon) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.5
본 연구의 목적은 한국화력발전소에서 사용되는 석탄의 촤 산화반응율을 연구하는 것이다. 석탄촤 산화반응율은 입자의 점화온도에 근거한 Semenov 의 열착화이론을 활용하여 도출하였다. 이에 필요한 석탄촤 입자의 점화온도는 가열 및 측정이 가능한 열전대를 통해 직접적인 방법으로 측정하였다. 아역 청탄인 WIRA 와 역청탄인 YAKUTUGOL 의 석탄화 점화온도는 입자 직경의 변화에 따라 측정을 했으며, 입자의 직경이 커질수록 석탄화 점화온도는 상승하였다. 입자 직경에 따른 석탄촤 점화온도의 결과를 통해 활성화 에너지 및 빈도인자를 도출하였다. 본 연구를 통해 도출한 석탄촤 산화반응율 값을 기존의 연구 데이터와 비교한 결과 유사함을 확인할 수 있었다. The experiment was designed to study the char oxidation kinetics of pulverized coals commonly utilized in Korean power plants. The kinetics has been estimated using the Semenov’s thermal spontaneous ignition theory adapted to coal char particle ignition temperature. The ignition temperature of coal char particle is obtained by a direct measurement of the particle temperature with photo detector as well as by means of a solid thermocouple which is used as both a heating and a measuring element. The ignition temperatures for subbituminous coal WIRA and bituminous coal YAKUTUGOL have been measured for 4 sizes in the range of 0.4 - 1 ㎜. The ignition temperature of the particle increases with the increasing diameter. The results were used to calculate the activation energy and the pre-exponential factor. As a result, the kinetics is an agreement with ones reported from other investigations.
권종만(Jong-Man Kwon),권철휘(Chul-Hui Kwoun),박성현(Sung-Hyun Park) 한국정보기술학회 2012 한국정보기술학회논문지 Vol.10 No.9
This paper proposes a basic research about development of an automatic observation system for low altitude surface temperature monitoring in coastal areas. The observation equipment is designed to capture the images from infrared thermal camera and measure the surface water temperature in the sky with 100m height using flying a balloon. The captured images at the observation equipment are sent to a server via Wi-Fi communication with the 5.8 GHz protocol and processed to monitor and analyze the surface water temperature by server program. The proposed system is capable of remote monitoring around a fixed place providing an accurate surface water temperature by analysis results. This system reduces the financial damages by a real time monitoring supporting useful information to people such as the management of fishery and cultivation, and a red and green tide effects.
Trehalase 에 관한 연구 (I) Sarcoma 180 복수암에 걸린 Mouse Trehalase에 관하여
권종만,이희성,이근배,Kwon, Jong-Man,Lee, Hi-Sung,Lee, Keun-Bai 생화학분자생물학회 1980 한국생화학회지 Vol.13 No.2
Mouse에 이식한 Sarcoma 180 복수암세포 및 복수에서 trehalase ($\alpha$, $\alpha-$ trehalose 1-D-glucohydrolase, EC 3. 2. 1. 28)의 분포를 관찰하였으며 이 효소를 부분 정제하였다. Trehalase의 활성도는 Lapp and Mason 법으로 측정하였으며 효소의 정제는 ammonium sulfate에 의한 침전 DEAE-cellulose column chromatography 및 Sephadex G-200 chromatography 등을 행하여 다음과 같은 결혼을 얻었다. 1. Sarcoma 180 복수암세포는 trehalase가 함유되어 있지 않다. 2. 7일만에 채취한 복수에서 이 효소의 활성도는 938.54 unit/ml이었다. 3. 복수의 이 효소의 활성도는 곤충, 기생충 및 미생물에 비하여 매우 낮았다. 4. 복수의 이 효소를 약 58배 정제하였으며 비활성도는 414.5이었다. 5. 이 효소의 반응 최적온도는 $60^{\circ}C$이며 반응최적 pH는 5.4 이다. 6. 이 효소는 glucose를 함유한 disaccharide의 기질중 trehalose에만 반응성이 있다. 7. 반응 생성물이 glucose임을 paper chromatography로 확인할 수 있었다. 8. 이상과 같은 결과로 보아 Sarcoma 180 복수암세포를 함유한 마우스의 복수에 trehalase가 존재함을 알 수 있었다. The activity of trehalase ($\alpha$, $\alpha-$ trehalose 1-D-glucohydrolase, ED 3. 2. 1. 28) in Sarcoma 180 ascites tumor cells and ascitic fluid which harvested at 7 days after transplantation has been studied. The activity of trehalase was measured by the method of Lapp and Mason. The results obtained were as follows; 1. The activity of trehalase could not be found in the Sarcoma 180 ascites tumor cells. 2. The activity of trehalase in ascitic fluid was 938.54 unit/ml. 3. In the ascitic fluid, the trehalase activity is relatively low compared with those in insect. microorganism, Ascaris suum and mouse kidney. 4. Trehalase from ascitic fluid has been purified about 58 fold by ammonium sulfate precipitation, DEAE-cellulose column chromatography and Sephadex G-200 gel filtration. 5. The optimal pH for enzymatic activity was 5.4, and optimal temperature was $60^{\circ}C$. 6. The enzyme was specific for trehalose as substrate. 7. The product of the reaction was identified as glucose by paper chromatographic method.
Trehalase 에 관한 연구 ( 1 ) Sarcoma 180 복수암에 걸린 Mouse Trehalase 에 관하여
권종만,이희성,이근배 ( Jong Man Kwon,Hi Sung Lee,Keun Bai Lee ) 생화학분자생물학회 1980 BMB Reports Vol.13 No.2
The activity of trehalase (α, α-trehalose 1-D-glucohydrolase, ED 3. 2. 1. 28) in Sarcoma 180 ascites tumor cells and ascitic fluid which harvested at 7 days after transplantation has been studied. The activity of trehalase was measured by the method of Lapp and Mason. The results obtained were as follows; 1. The activity of trehalase could not be found in the Sarcoma 180 ascites tumor cells. 2. The activity of trehalase in ascitic fluid was 938.54 units/㎖. 3. In the ascitic fluid, the trehalase activity is relatively low compared with those in insect, microorganism, Ascaris suum and mouse kidney. 4. Trehalase from ascitic fluid has been purified about 58 fold by ammonium sulfate precipitation, DEAE-cellulose column chromatography and Sephadex G-200 gel filtration. 5. The optimal pH for enzymatic activity was 5.4, and optimal temperature was 60℃. 6. The enzyme was specific for trehalose as substrate. 7. The product of the reaction was identified as glucose by paper chromatographic method.