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CAF2D/FEMFLOW V1.0을 이용한 유동의 수치해석에 관한 연구
채은미,사종엽,시은보,장근식 한국전산유체공학회 1997 한국전산유체공학회 학술대회논문집 Vol.1997 No.-
CAF2D/FEMFLOW, which includes preprocessor, automatic mesh-generator, solver and postprocessor on GUl(Graphic User Interface), has been developed for the analysis of incompressible viscous flaw. It solves flow problems by using FEM which is adapted from PlSO(Pressure Implicit with Splitting of Operatores). This study presents the outline of CAF2D/FEMFLOW as well as samples of computaional results.
돼지감자 분말을 이용한 Kluyveromyces marxianus의 알코올 발효
채은미,최언호 한국산업미생물학회 1991 한국미생물·생명공학회지 Vol.19 No.3
돼지감자 분말로부터 대체에너지용 알코올을 생산하기 위하여 우수 inulin 자화 균주로 알려진 Kluyveromyces marxianus UCD(FST)55-82로 알코올 발효 최적 배양조건을 조사한 바 배양 최적 온도 30℃, 최적 pH 5.44(돼지감자 자체의 pH), 교반속도 100rpm, 배지의 양 1,000㎖(2.5l jar fermenter), 통기하지 않은 상태에서 알코올 생성률이 가장 높았으며 효모의 접종량은 배지량의 2.5%로 충분하였다. 또한, 0.01% antifoam A concentrate(silicon polymer)와 0.1% urea의 첨가는 알코올 농도를 효과적으로 증가시키고 발효기간을 단축시켰다. 이와 같은 최적 조건에서 총당질은 배양 하루만에 89.62%가 분해되어 알코올 생성 수율이 91.91%, 알코올 productivity가 2.71g ethanol/l/h이었고 배양 4일 후에는 0.71g ethanol/l/h으로 발효액의 알코올 농도는 6.8%가 되었다. In order to produce alcohol for the alternative energy from dried powder of Jerusalem artichoke was investigated with Kluyveromyces marxianus UCD(FST)55-82, which was reported to assimilate inulin. The optimal condition for the production of ethanol by K. marxianus was elucidated to be incubation temperature of 30℃, initial pH 5.44, agitation of 100rpm, 1,000㎖ of medium in a 2.5l-vessel, anaerobic state, and inoculation of 2.5%(v/v). Addition of antifoam A concentrate(silicon polymer) of 0.01% and urea of 0.1% increased the concentration of ethanol effectively. The optimized condition showed ethanol concentration of 6.8%(v/v) in Jerusalem artichoke liquid medium, production yield of 91.91% and productivity of 2.71 g/l/hr during the first day and 0.71g ethanol/l/hr during four days of incubation.
채은미 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.9
A recent progress on laser cooling of molecules is summarized. Since the development during the 1980s for atomic species, laser cooling has been the very beginning step to cool and trap atoms for frontier research on quantum simulations, quantum sensing and precision measurements. Despite the complex internal structures of molecules, laser cooling of molecules have been realized with the deepened understanding of molecular structures and interaction between light and molecules. The development of laser technology over the last decades has also been a great aid for the laser cooling of molecules because many lasers are necessary to successfully cool the molecules. A detailed principle and development of laser cooling of molecules as well as the current status of the feld are reviewed to give an introduction to the growing feld of ultracold molecular physics.
채은미,사종엽 대한설비공학회 1999 설비공학 논문집 Vol.11 No.3
A computer code based on a node equation method has been developed for the analysis of pipe network. Both data structure and object-oriented programming technique are used for pipe and node modelling, in which simplification process is applied to complicated and large pipe network. The semi-direct solver, ILU-CGS, improves greatly both the accuracy and the rate of convergence. The computational result of high-pressure pipe network of city gas in Taegu shows the good agreement with the real data.
채은미(Chae, Eun-mi),김승욱(Kim, Seung-woog) 한국조형디자인학회 2012 조형디자인연구 Vol.15 No.4
빛은 물리적 요소로서 사물의 지각뿐 아니라 심리요소로서 많은 영향을 끼치며 인간의 이성과 감성을 이어주는 역할을 한다. 빛이 공간과 형태에 미치는 영향은 이에 대한 인간의 지각과 밀접한 연관성을 가지며, 빛의 연출과 공간적 효과가 극적으로 주어진 형태와 공간에 새로운 생명력과 역동성을 불어 넣어 줌으로써 이것이 공간조형성과 결부되어 조형예술의 중요한 근원적 요소로 인식되고 있다. 현대의 유리조형은 빛과 자연요소의 유입을 통한 새로운 형태의 공간감과 표현확장을 가능하게 하며, 유리표면은 빛과 시야의 선택기능에 의해 다양하고 흥미로운 시각적 환경과 공간에서의 구성표현을 극대화 시키게 된다. 본 연구는 빛의 공간과의 관계성에 의한 유리조형의 표현과 그에 부합하는 사례분석 등을 통하여 새로운 조형예술의 표현 가능성을 제시하는데 주안점을 두었다. Light cause a lot of effects and join human's different nature and sensitivity as mind element as well as perception of things as physical element. Effect that light gets in space and form has close relation with human's rejection on this, and this is linked with space design characteristics by inspiring production and that spatial effect is given dramatically form and life force which is new to space and dynamism of light and is realized on important original element of plastic art. Contemporary glass work enables expression extension, and is various by selection function of light and visual field if it is glass surface with space matter of light and new form through inflow of natural factor and maximize express of composition in interesting visual environment division space. This study put essential point to project expression possibility of new plastic art in representation and case test coinciding to him of glass work by relation with space of light.