화학동력학의 이론적 연구(Ⅱ) : 액체상에서 고분자의 분자론적 거동 Molecular Behavior of Polymer in Liquid

이재원 嶺南大學校 工業技術硏究所 1985 연구보고 Vol.13 No.2

The end to end distances, <r²>?? were calculated by our given equation for polymer chain. And the travelled distances, d, were obtainted by applying our derived equation at low shear rate and at high shear rate. Polymer liquids in this study are listed as follows: HDPE melt, LDPE melt, polypropyrene melt, 2.5wt% polystyrene solution, 4 wt% polystyrene solution, 5wt% polystyrene solution and 2wt% polyisobutylene solution. As polymer chain is slowly relaxed in low shear rate, the ratio, d/<r²>??, is nearly equality in high viscous and at high temperature. The encounter rate equation of polymer molecules is derived from the diffustion coefficient because the molecular reacion in liquid is diffustion controlled. When shear rate increase, the reaction proceed rapidly.

다동온실내 복합환경 제어용 하드웨어 시스템의 개발

이대원,김채웅,김재민 성균관대학교 생명과학자원연구소 1997 生命資源科學硏究 Vol.4 No.2

Growth of plants in greenhouses is increasing in popularity across Korea. Automatic hybrid environmental hardware system, including main module, display module, sensor module, input module, output module with one chip CPU controller, EPROM, SRAM, multi task interrupt controller, operating equipment and many sensors, appears to be an attractive alternative to the use of manual labor for accomplishing this task. Each module was made to slots, which are very convenient to mount and take off. Also, it is managed easily to repair, add, remove, and change their function and expansion. This research developed the hardware system for automatic hybrid environmental control. Separate programs for control of the hardware and for optimal analysis of the software, written Visual Basic, Turbo-C and Assembler, were developed to make the automatic hybrid environmental control system operated. The objective of this research designed and constructed a hybrid environmental hardware system for the optimal growth of plants within a greenhouse environment.

전신장기의 호산구 침윤을 동반한 급성 심내막염과 심근염 : An Autopsy Case 부검증례

이상한,이숙희,임재원,곽정식,채종민 大韓法醫學會 1996 대한법의학회지 Vol.20 No.1

We experienced an autopsy case of acute endocarditis and myocarditis with systemic organic eosinophilic infiltration probably due to Clonorchis sinensis infection. Localized hypersensitivity reaction due to parasitic infection is common. Systemic eosinophilic infiltration is generally noted in idiopathic hypereosinophilic syndrome, drug induced reaction and parasitic infection.

거대세포형의 간세포암종을 지닌 의사 : An autopsy case 1 예 보고

이병육,곽정식,이상한,임재원 大韓法醫學會 1996 대한법의학회지 Vol.20 No.1

Giant cell variant of hepatocellular carcinoma is well recognized?. However, it is sufficiently rare to warrant reporting, especially when this malignant tumor invade and metastasize extensively. According to Peters?, about 14% of hepatocellular carcinoma contain giant cells, but one composed mostly of giant cells must designated as giant cell variant. We experienced an autopsy case of giant cell variant of hepatocellular carcinoma composed mostly of pleomorphic malignant giant cells, with diffuse invasion of abdominal organs and metastasis to the mesentery and transverse colon.

활성화에 의한 표면현상

이재원 嶺南大學校 工業技術硏究所 1979 연구보고 Vol.7 No.1

In this study, it may be consider the behavior of the molecule adsorbed at activation. Since the nitrogen adsorbed take place in the multilayer adsorption, such as physical adsorption, there was measured the surface area in accordance with the activation temperature and time by using the BET equation. When the activation temperature increases and the activation time is longer, there is increased the specific surface area. And the amount of hydrogen adsorbed is not related with the activation before the nitrogen adsorbed, but is related with the activation before the hydrogen adsorbed. The amount of hydrogen adsorbed is only related with the activation temperature, but is not related with the activation time. Also there is ocourred the activation above specific temperature. When the nitrogen is adsorbed, the heat of adsorption is calculated in accordance with various activation temperature and time, the result is made sure that the value of heat of adsorption is approximately constant for a nitrogen gas regardless of the chemical nature of the adsorbent. For nitrogen the heat of adsorption is uniformly 2,210±90 cal. The adsorption time of the nitrogen molecules on the surface is longer several hundred times than the vibration time of the nitrogen gas. The average time of stay of the nitrogen on the surface is of the order of 10 sec. Since the surface concentration is not directly measured, there is proposed the theoretical equation which is calculated the surface concentration. The adsorption is affected from the relation between the surface tension and the heat of adsorption. Since the bond energy of the surface and the adsorbed molecule is not directly obtained, there is proposed the theretical equation which was derived from the partition function and the equilibrium pressure of the gas on the surface.

쿨롱 유체의 열역학적 성질 및 구조 인자

李再源 嶺南大學校 工業技術硏究所 1990 연구보고 Vol.18 No.1

The equilibrium properties of the Coulomb fluid were predicted using perturbation theory for OCP (One Component Plasma). Thermodynamic properties of OCP depend only on the Coulomb coupling constant. The thermodynamic quantities such as excess specific heat at constant volume, reduces bulk modulus, reduces thermal expansion coefficient, and excess specific heat at corstant pressure are calculated from analytic expression as a function of Coulomb coupling constant for excess internal energy. Comparisons of the radial distribution functions and structure factors for the hard sphere reference and OCP system show that the theory gives good thermodynamic results for Coulomb fluid.

中國經濟發展에 對한 分析 : 毛澤東時期의 經濟 The economy the Mao's time

李元福,徐在日 대구대학교 경제경영연구소 2002 경제경영연구 Vol.1 No.2

毛澤東을 中心으로 수도인 北京에서 49년 10월 1일 中華人民共和國은 탄생함과 동시에 共産黨指導部는 국가체제를 정비하고 경제발전을 위하여 大躍進運動을 비롯한 計劃經濟開發을 단행하였다. 이시기 計劃經濟모델은 東獨과 蘇聯이었고, 蘇聯의 지원을 받아 1∼2차 經濟開發은 성공리에 끝났지만 文化大革命이라는 10년 정체기를 통하여 集團體制經濟는 落後의 길을 걷는다. 이러한 毛澤東時期의 經濟는 현 시기의 중국경제학자들에도 批評을 받는 부분이다. 비록 左派的인 路線에서 입각한 경제활동이었지만, 이 시기의 경제활동은 中國의 工業을 現代化시키기에 충분한 노력을 하였고, 이에 따른 成果와 이어지는 등소평시기의 경제적인 기초를 확립하였기 때문에 毛澤東時期의 經濟는 재조명해 보아도 충분한 價値가 있다고 할 것이다.

中國經濟發展에 對한 分析 : 鄧小平時期의 經濟 The economy time the Deng's time

李元福,徐在日 대구대학교 경제경영연구소 2003 경제경영연구 Vol.2 No.1

"文革"기간동안 四人幇에 의해 강소성의 한 공장에서 노동을 하다가 1973년 복직한 鄧小平은 1978년부터 중국 공산당의 주요 정책 결정요인이 되면서, 그는 전당 제정과 새로운 발전 시기의 노선, 방침, 정책 실시를 이끌어 나갔다. 그는 解放思想, 實事求是, 앞을 내다보는 방침으로 단결 일치하여 "사회주의 노선, 인민민주주의전권, 공산당지도자들, 마르크스 레닌주의, 毛澤東 사상의 4가지 기본원칙의 견지"할 것을 주장하고, 兩岸間의 통일대업에 만은 관심을 기울여, "하나의 국가, 두개의 제도"라는 방안을 제시하였다. 중국은 1978년 제11기 3중전회 직후 개최된 경제학회에서 "市場經濟"의 문제가 제기하였고, 1984년 중국공산당 제 12기 3中全會에서 "경제개혁에 관한 결정"을 통과시켰다. 이 경제개혁에 관한 결정에서는 사회주의경제를 '생산요소의 사회주의 공유제에 기초한 계획적인 상품경제 라고 정의했으며, 당시 저명한 경제학자들은 사회주의 상품경제는 곧 사회주의 시장경제라고 칭할 수 있다'라는 의견을 제기하였다. 중국 개혁·개방의 경과 및 성과를 살펴보면 1978년 12월 중국은 대외개방을 천명한 11기 3中全會 이후 시장기능을 적극 도입함으로써 "중국특색의 사회주의 시장경제 건설"을 통한 경제발전을 이루기 위해 노력해 왔다. 그 결과 중국은 최근 몇 년간에 12~13%의 높은 경제성장을 이룩하였고, 중국의 수출액은 94년 1,210억 달러로 세계 9위를 기록하고 있다. 또 중국의 수입액도 94년 1,157억 달러로 9위를 기록하고 있으며 대외무역관계의 계속적인 확대로 현재 180여 개 이상의 국가와 교역관계를 맺고 있는 것으로 보인다. 특히 선진국에 대한 수출입 비중이 점차 높아지고 있는 등 고도성장을 계속하고 있다. 鄧小平정권의 과감한 개혁과 개방을 추진한 결과, "사회주의 시장경제"로 전환하면서 비약적인 경제발전을 성취함으로써 세계의 주목을 받는 경제대국으로 등장하였다. Deng Xiaoping who resumed office in 1973 after having been expelled by 四人幇 and doing manual labor during the Cultural Revolution rose as a decision maker of major policies of Chinese Communist Party and led the new plan and policy line of the party. He established such perspective policies as liberation idea and the idea of doing the practical and leading the right, and asserted that the party adhere to the line of socialism, the right of people s democracy, the leaders of the Communist Party, Marxism .-Leninism and the four basic principles of Mao Zedong s idea. And also he was much interested in unification between China and Taiwan and presented the policy of "one country, two systems". The problem of market economy was carried into an economic conference shortly after the 3rd national convention of Chinese Communist Party was held in 1978. And the national convention of the party passed "the decision on economic revolution" in 1884 Socialism economy was defined as merchandise economy which was based on the system of socialism public-ownership of production factors. Distinguished economists who attended the convention raised an opinion that the socialism merchandise economy could be called socialism market economy. China has tried to achieve economic growth through construction of socialism market economy which was characteristic in China by adopting the function of market actively since it announced foreign open in the national convention of the party on December. 1978. As a result, China has achieved high economic growth by 12-13% for past several years. Its exports was 121,000,000,000 dollars in 1994, becoming 9th exporting country in world trade. And its imports 115,700,000,000 dollars, becoming 9th importing country in world trade in 1994. It has traded with more than 180 countries. thanks to continuous extension of international trade. Especially, it has achieved high economic growth by increasing exports and imports with advanced countries. Deng Xiaoping s determined revolution and open policy changed China's economy socialism into market economy, and China rose as an economic power by achieving great economic development.

화학동력학의 이론적 연구(Ⅲ) : -점탄성액체의 정유상태 Compliance의 분자론적 고찰- 점탄성액체의 정류상태 Compliance의 분자론적 고찰

이재원 嶺南大學校附設 基礎科學硏究所 1985 基礎科學硏究 Vol.5 No.-

The steady state compliances, ??, were calculated by our given equation for viscoelastic liquid, which was derived from Ree-Eyring theory of viscosity and our derived normal stress coeffcient. Viscoelastic liquids in this study are listed as follows: 7% aluminium soap solution, 2.5% wt % polystyrene solution, 4 wt % polystyrene solution; 2 wt % polyisobutylene solution; 0.75 wt % polyacrylamide solution 1.5 wt % polyacrylamide solution, HDPE melt ;LDPE melt and phenoxy-A melt. The steady state compliances in solution are larger than those in melt because the steady state complance is very decreased with increase of temperature. As the molecular weight of macromolecule which is large degrees of freedom increase, the steady state compliance is large value due to long relaxation time. And The steady state compliance is decreased with increase of density in liquid.

화학동력학의 이론적 연구(I) : Non-Newtonian Flow of Viscoelastic Solution 점탄성용액의 비뉴톤성 흐름

이재원 영남대학교 공업기술연구소 1984 연구보고 Vol.12 No.1

The theorectical normal stress coefficient is derived from the Non-Newtonian flow of viscoelastic solutions. Parameters, β?? and Χ????/α?? (i=1 and 2) were obtained by applying Ree-Eyring equation to experimental values of viscosity. By using the parameteric values, the normal stress coefficient,?? were calculated from our derived equation by means of numerical method. Viscoelastic solution investigated in this study are listed as follows: 7% Aluminium soap solution, Lubricant, Phenoxy -A melt, 5 wt% Polystyrene solution, 1.5wt% Polyacryl amide solution. For viscoelastic solution investigated in this study, the agreement of the theory with experiment was satistacory. As the relaxation time ratio, β₂/β₁,is higher, the theory is fairly well consistent with experiment. The molecular reaction in liquid is diffusion controlled. When shear rate increase, the reaction proceed rapidly.