http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김찬우,이동건,강승훈,조지현,이수진,조동환,김정기 대한생물치료정신의학회 2003 생물치료정신의학 Vol.9 No.2
Objectives : Risperidone and olanzapine, which are atypical antipsychotics. are widely used in the treatment of schizophrenia as the 1st line drug, proving their effectiveness for both positive and negative symptoms. They also have many advantages even from the side effects. However, they show differences with the chemical structure and pharmacokinetics and they work differently to receptors. Researchers have studied the effect and side effect during the acute phase of schizophrenia as an open prospective study. Methods : Forty subjects with DSM-IV schizophrenia or schizoaffective patients including 1) 1st onset schizophrenia patient, 2) patient who has been treated by the prior antipsychotics and not improved or even worse to be admitted again, were assigned to receive risperidone or olanzapine for 6 weeks. Psychopathology, adverse effect. weight change, fasting serum glucose, and drug cost were compared within and across groups. Results : After 6 weeks later both treatment groups showed the significant decrease in PANSS positive, general psychopathology and total score while they did not show any significant difference between two groups. Risperidone group, however. showed the significant decrease in PANS negative score, which olanzapine group did not. In terms of adverse effect risperidone group showed more extrapyramidal symptom than olanzapine group. Body weight rised significantly after Gweeks, but no significant difference between two treatment groups. There were no significant indrease of fasting serum glucose level. Conclusions : Risperidone and olanzapine are effective drugs which can be used during the acute phase of schizophrenia. Risperidone is expected to shorten the admission day and remission of the symptom of acute phase, mile olarizapine is more advantage in a neurologic side effect than rispendone.
김대수,조통래 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1
Sintered β-FeSi₂has been employed as the thermoelectric devices to change the heat to electric power directiy. β-FeSi₂device was fabricated by sintering the mixture of Fe and Si powder at 1250℃. The thermoelestric properties of sintered FeSi₂with elemental substitution have been studied by the measurment of electric conductivity and Seebeak's coefficient. Substitution of Sb or In in β-FeSi₂did not show appreciable difference on the thermoelestric properties of sintered β-FeSi₂devices.
金大洙,趙統來 충남대학교 공업교육연구소 1986 論文集 Vol.8 No.3
Theoretical model was proposed to predict the rate of dissolution of spherical solid particles, initially non-porous. The model takes into an account mass transfer between the solid surface and the bulk fluid. The relationship between the fractional dissolution and time was determined basen on the kinetics of individual particles. For the uniform particle size, it is found that the fractional dissolution increases as both the particle size and particle density decreases.
천이금속 표면에서의 수소 흡입의 동력학 : 수소흡착, 방출과 확산에 관하여
손기수,박동수,최상돈,김석환,배준규 慶北大學校 物理化學硏究所 1986 硏究論文集 Vol.7 No.-
천이금속(Nb) 표면에 수소의 두 상태는 R.J. Smith에 의해 암시되어 왔다. 우리는 이것을 받아들여 천이금속 표면에 두 개의 상태를 가정하여 몇 개의 경우의 potential barrier에 관해 charging과 degassing 조건하에서 수소원자의 fraction의 시간에 대한 변화율을 얻었다. 그리고 수소의 표면 fraction θ에 대해 온도와 log(θ/1-θ)의 비와 peak amplitude를 구하여 R.J. Smith팀의 실험결과와 비교했으며 그것을 이용해서 온도에 관한 desorption rate를 얻었다. It was known by R.J. Smith that there are two kinds of surface states on transition metal(Nb) surfaces. Furthermore for all metals desorption energy is larger than the solution energy. Here we present a model for hydrogen absorption of metal surfaces and then obtained the time rates of hydrogen charging and degassing on metal surfaces for few limiting cases. We also get log(θ/1-θ) versus the reciprocal temperature and peak amplitude of surface fraction versus the temperature, turned out to be good agreement with experiments. Finally we get the desorption fraction of hydrogen atom.
Fe 중에 Nd확산에 관한 연구(R-D반응의 기초연구)
조통래,송창빈,김대수 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1
The growth of intermetallic compounds of rare earth-transition metal has been investigated by the reduction process. Nd was diffused into Fe block and made intermetallic compounds, only the Nd₂Fe17 diffusion layer was obtained for the Nd-Fe system. It was shown that the growth rate of intermetallic compounes was controlled by diffusion. Apprarent activation energy for the diffusion of Nd was 28.5Kcal/mol through arrhenius plots.
Auger 電子分光에 의한 Ni-Cu, Cu-Ag 表面의 附着硏究
朴東秀,金裕榮,李元植 慶北大學校 産業開發硏究所 1980 硏究報告 Vol.8 No.-
Adhesion for various metals Ni-Cu-Ag after friction was measured in high vacuum chamber. Surfaces were examined with Auger-Electron-Spectroscopy in∼10_-10 torr before and after contact to determine nature of surface changes resulting from adhesive contact. Surfaces were cleaned by standard process and electrical heating for friction and AES studies. Thus, from the experimental results, it should be possible to predict which of two surfaces in contact will undergo attrition. We can see that adhesion depends on elastic moduli, surface energy, heat of sublimation, melting point and cohesive strength.
Preionization-Stabilized Multiple Transmission Lines TE N_2-Laser
朴東秀,金裕榮,金庚燦 慶北大學校 1980 論文集 Vol.29 No.-
Achieving high output power in N_2 laser, we used fast electric discharge (~10 nsec), large volume (~0.2 liter) and homogenized discharge. In order to perform the fast discharge, we have designed a lasing cavity driven by TE-type transmission lines and low inductance spark gap, and utilized multiple transmission lines to provide increased lasing volume. Multiple lines should effect on reducing the line impedance. We have derived the good homogeneity of laser discharge from the uniform spatial distribution of the initiating electrons provided by the preionizer. Present work enabled the stability of the main glow discharge relatively insensitive to the surface quality of the main electrodes.
천이금속 표면에서의 수소의 동력학 : 수소의 화학 흡착, 방출, 확산에 관하여
손기수,박동수,최상돈,김석환,김영주 慶北大學校 物理化學硏究所 1986 硏究論文集 Vol.7 No.-
S.M. Ko, L.D. Schmidt 등에 의하여 제시된 표면의 bulk내의 원자, 진공 근처 표면에서의 분자의 존재, 그리고 T. Engel, U. Kuipers 등에 의해서 제시된 진공과 bulk 사이에서의 분자와 원자간의 상호 변환 가설을 합쳐 진공과 접한 표면의 단 원자층에 화학흡수층을 설정하여 새로운 model을 만들었고, 이 model에 의하여 표면과 bulk 및 진공 사이에 일어나는 모든 과정 즉 표면과 bulk 사이의 difussion과 adsorption, 화학 흡수층에서 분자가 dissociation 과정을 거쳐 표면에 adsorption 되거나, recombination 과정을 거쳐 분자로 desorption 하는 과정등을 모두 설명할 수 있는 결과를 얻었다. 나아가서 평형 상태하의 표면 fraction과 화학 흡수층내의 분자의 시간분포, desorption하는 분자들의 시간 분포함수를 얻었다. 온도에 대해 peak amplitude와 log(θ/1-θ)의 값을 얻어서 실험치와 비교했으며, 수소원자의 desorption fraction을 얻었다. Proposing a new model which includes two states model and chemisorption layer right above the surface atomic layer which interrelates the atoms in bulk and the molecules in vacuum, the diffusion from the surface to bulk, adsorption on surface from chemisorption layer and desorption from chemisorption layer are explained. We also get the distribution of molecules versus time at the chemisorption layer, log(θ/1-θ), and atomic peak amplitude on surface versus the reciprocal temperature on equilibrium condition. These results are turned out to be good results. Furthermore by the use of above results, we derive the desorbing fraction as a linear function of inverse temperature.