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- 저자 : 조민호 ( Min Mo Cho ) (검색결과 6 건)
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카본슬러리 연료의 분산안정성 개선 및 scale up 제조 연구
조민호(Min-Ho Cho),양문규(Mun-Kyu Yang),이익모(Ik-Mo Lee),조준현(Joon-Hyun Cho),권태수(Tae-Soo Kwon),정병훈(Byung-Hun Jeong),한정식(Jeong-Sik Han) 한국추진공학회 2009 한국추진공학회지 Vol.13 No.3
For the preparation of carbon-slurry fuel, the effects of process parameters on the carbon dispersion stability in the liquid fuel have been investigated. The dispersion stability of carbon-slurry fuels could be monitored by measurements of particle size and carbon contents in the different positions, and observation of dispersion states after centrifuging. Through the application of various additives, it was found that NB463S84 based on polyolefin succinimde showed the best dispersion and longest stability life of carbon-slurry fuel. Also, PIBSI (polyisobutenyl succimide) with the similar functional groups to NB463S84 was effectively synthesized and same dispersion stability was verified by application to carbon-slurry fuel. Finally, the possibility of practical use of carbon-slurry fuels was confirmed by application of the mixing conditions obtained from g scale to kg scale preparation.
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조민호(Min-Ho Cho),양문규(Mun-Kyu Yang),정병훈(Byung-Hun Jeong),한정식(Jeong-Sik Han),이익모(Ik-Mo Lee) 한국추진공학회 2009 한국추진공학회 학술대회논문집 Vol.2009 No.5
알루미늄슬러리 연료 제조 시 알루미늄의 분산안정성에 미치는 공정변수의 영향을 조사하였다. 알루미늄슬러리연료의 분산안정성은 Laser의 산란 현상을 이용하여 물질의 분산 안정성을 파악하는 Turbiscan을 이용하여 확인하였다. 여러 종류의 첨가제 적용시 시간 경과에 따른 입자 크기 및 농도 변화를 측정한 결과, TPAB (Tetrapropyl ammonium bromide) 사용시 다른 첨가제보다 좋은 결과를 나타내었다. For the preparation of Aluminum-slurry fuel, the effects of process parameters on the aluminum dispersion stability in the liquid fuel have been investigated. The dispersion stability of aluminum-slurry fuels could be monitored by measurements through Turbiscan using the scattering of the Laser. Through the application of various additives, TPAB (Tetrapropyl ammonium bromide) showed more reasonable performance than others.
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카본슬러리 연료의 분산안정성 개선 및 scale up 제조연구
조민호(Jo Min-Ho),양문규(Mun-Kyu Yang),이익모(Ik-Mo Lee),조준현(Joon-Hyun Cho),권태수(Tae-Soo Kwon),정병훈(Byung-Hun Jeong),한정식(Jeong-Sik Han) 한국추진공학회 2008 한국추진공학회 학술대회논문집 Vol.2008 No.11
슬러리 연료 제조 시 카본의 분산안정성에 미치는 공정변수의 영향을 조사하였다. 슬러리연료 저장용기의 세군데(위, 중간, 아래) 위치별로 채취된 시료에서 평균입도와 탄소함량을 분석하여 Jet A-1에서 카본의 분산안정성을 측정하였다. 여러 종류의 첨가제를 적용한 결과, NB463S84 사용 시 분산성과 증가된 중력 가속도하에서 안정성이 가장 우수하였다. 동일 조건에서 카본층 높이 변화와 카본의 평균입도 측정을 통하여 혼합장비의 성능을 비교하였고, 실험실 규모에서 얻은 제조조건을 bench 규모 제조에 적용하여 본 연구의 실용 가능성을 확인하였다. In manufacture of slurry fuel, the effects of process parameters on the carbon dispersion stability have been investigated. The particle size and contents of the carbon slurry taken from 3(top, medium, bottom) positions in fuel reservoir were analyzed to estimate the dispersion of the carbon in Jet A-1. Through the application of various additives, it was found that NB463S84 additive showed the best dispersion and stability of carbon at accelerated gravity condition. The mixer performance was compared by the observation of height change of carbon-containing layer and measurement of particle sizes at the same conditions. Application of the mixing conditions obtained from the lab-scale to bench scale manufacture confirmed the practical feasibility of our research.
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조민호 ( Cho Min-ho ),안건상 ( Ahn Kun-sang ),손정모 ( Son Jeong-mo ) 한국도서(섬)학회 2017 韓國島嶼硏究 Vol.29 No.2
Columnar joints are shown in various forms throughout the country. In particular, areas where columnar joints are distributed have excellent land scape, academic value and educational value. Among them, the relatively well-preserved landscape is located in the national parks(Mudeungsan National Park, Juwangsan National Park, and Byunsanbando National Park). Among the columnar joints distributed in Korea, most of the well known ones are developed in the Cenozoic basaltic rocks. However, columnar joints are developed in the acidic volcanic rocks of southern Korea, and there are unknown columnar joints that need investigation. This study focused on the formation of such columnar joints, which have not yet been studied extensively. The purpose of this study is to investigate the morphology and formation process of columnar joints in acidic volcanic rocks. According to previous studies, columnar joints developed in acidic volcanic rocks are distributed in Jeokbeokgang of Buan, Jido, Jeungdo of Shinan, and some area of anjaedo, Goheung, Yeosu, Sacheon-Goseong, and the Juwangsan National Parks. Among them, the study is about the columnar joints distributed within Byeonsanbando National Park of Buan. The park is divided into two sides. The columnar joints in the Jeokbeokgang area sited in the coastal parts have been developed in three forms. First one has developed in the vertical side, which shows a form diminished in length of polygon side, from upside to downside. It also has observed peperrite. The second one has a entablature and has developed a lotus-shaped vertical side columnar joints. Third one is the columnar joints developed into different shapes of upper Gomso Rhyolite and the lower Gomso Rhyolite. The columnar joints distributed in some area of Jeokbeokgang take up high rate of square and pentagon. Length of polygon sideis is within 20cm, but the thing of less than 10cm is the most. The columnar joints distributed in some area of Jiksopokpo are mostly vertical side. Most columnar joints has distributed in the ground of mountain trails, on a small scale, but the thing of Jiksopokpo has been developed up to 7m. The rocks constituting columnar joints are rhyolite and rhyolitic tuff. The fragments of rocks in the Jeokbyeokgang area are several millimeters. The phenocryst minerals of about 1mm in size are mostly feldspar and show albite twin. The rocks in the Jiksopokpo area consist of feldspar phenocryst, quartz and glassy minerals of 2~3 cm in size, and the rate of SiO<sub>2</sub> is 69.30wt%~76.69wt%. The columnar joints of the Jeokbyeokgang and jiksopokpo areas are rhyolite and rhyolitic tuff with similar chemical composition but different morphological characteristics. The reason for such results is considered to be due to the difference in cooling rate rather than the difference in chemical composition. The columnar joints of the Jeokbyeokgang area are characterized by various cooling surface morphologies and cooling rates due to lower unconsolidated layer, runoff of water, and other rhyolite intrusion. Columnar joints on byeonsan tuff in jiksopokpo area have characteristic columnar joints developed from acidic rocks because there are few factors that change the cooling rate.
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Papanicolaou stain의 시간단축 및 시약절약을 위한 세포질염색시약의 연구
김순재 ( Soon Jae Kim ),이문정 ( Moon Jung Lee ),조민호 ( Min Mo Cho ),박노진 ( Noh Jin Park ),마상철 ( Sang Chul Ma ),한명기 ( Myung Ki Han ) 대한임상검사과학회 2000 대한임상검사과학회지(KJCLS) Vol.32 No.3
Currently, Orange-G and EA50 are being used in Papanicolaou stain. The simplification of this two reagents is studied in this research. According to the result, the most favorable arrangement condition is like the following. 1) It is proved that the most satisfactoη stain property is made when Orange-G is 2.5ml, Light green is 4.5ml and Eosin-Y is 7.0ml in the aspect of density. 2) The best qulified stain property is made up when the pH is 5.0-5.5 in the aspect of pH in mixed reagent. Therefore, for the optimum mixture of reagents, you should mix Orange-G 2.5ml, Light geen 4.5ml and Eosin-Y 7.아nl together, and then, add alcohol whose alcoholicity is 95 percent to it whεn it comes to the amount of 1α)()ml. And you shou1d add phosphotungstic acid 2g, saturated solution of lithium carbonate O.5ml and glacial acetic acid to it in a row lUltil it comes to pH5.0-5.5.
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