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RISS 인기검색어
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- 저자 : 김재하(Kim, Jaeha Kim) (검색결과 157 건)
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측추력을 이용한 초기방향전환 및 고고도 고기동 유도탄 설계
김재하,한상설,이동주,송경록,Kim, Jai-Ha,Han, Sang-Sul,Lee, Dong-Ju,Song, Kyoug-Rok 한국군사과학기술학회 2013 한국군사과학기술학회지 Vol.16 No.2
This paper considers the many kinds of attitude control systems including launcher. JVC(Jet vane control), Jet tap, Jetvator and Movable nozzles are used to control the initial attitude of a missile only. Recently side jet thruster and it's applications to control initial turn and to maneuver at high altitude have been increased. How to design and develop the missile for an initial turn and a high maneuver at high altitude using side jet thrust were described in this paper.
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김재하,Kim, Jae-Ha 대한약리학회 1994 대한약리학잡지 Vol.30 No.2
In rat atrium the characteristics of purinergic receptors were investigated by observing the effects of some purinergic receptor agonists and antagonists on action potential and contractile force. The statistically significant effects of $ATP(10^{-6}{\sim}10^{-3}M)$ and adenosine $(10^{-6}{\sim}10^{-3}M)$ on normal action potential characteristics were a dose-dependent shortening of action potential duration $(APD_{90})$ by both agents and hyperpolarization by $ATP(10^{-4},10^{-3}M)$. $CAP(10^{-8}{\sim}10^{-4}M)$, an $A_1$ adenosine receptor agonist, shortened $(APD_{90})$ markedly in a dose-dependent manner and these effects were almost abolished by $DPCPX\;(10^{-6}\;M), an $A_1$, adenosine receptor antagonist, but not affected by $DMPX(2{\times}10^{-6}\;M)$, an $A_2$ adenosine receptor agonist. On the other hand, CGS $21680(10^{-7}{\sim}10^{-4}M)$, an $A_2$ adenosine receptor agonist, elicited a slight shortening of $(APD_{90})$ and these effects were inhibited by DPCPX but persisted in the presence of DPMX. Adenosine $(10^{-6}{\sim}10{\-4}\;M)$ decreased the basal contraction of atrial muscle in a dose-dependent manner and these effects were not inhibited by DMPX but by DPCPX. These results suggests that purinergic receptor agonists depress the cardiac activity by a short ening of action potential duration and this effect is mostly mediated by $A_1$ adenosine receptors in rat atrium.
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김재하,황동기,최대근,Kim, Jai-Ha,Whang, Dong-Kee,Choe, Dae-Geun 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.4
This paper considers the mechanical properties test results of the ceramic fiber reinforced plastic using hyper temperature. These materials were developed to make antenna cover which should not only protect antenna from high temperature and high pressure but also transmit and receive radio frequency for hypersonic missile. So the bending strength tests under the room temperature and the hyper temperature for new materials were done to evaluate of their performances. Also, the conductivity, specific heat, diffusivity and density were tested.
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정상성인 및 신장질환례에 있어서의 혈청 Protein , Glycoprotein 및 Lipoprotein 분획상과 면역전기영동상의 비교
김정용 ( Chung Yong Kim ),최동엽 ( Dong Yup Choi ),김재하 ( Jae Ha Kim ),김노경 ( Noe Kyeong Kim ),김관엽 ( Kwan Yop Kim ) 대한내과학회 1968 대한내과학회지 Vol.11 No.11
The authors investigated the changes of electrophoretic patterns of serum protein, glycoprotein and lipoprotein in the patients with glomerulolnephritis and nephrotic syndrome by the method of agar-gel microelectrophoresis, These `patterns were compared to
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증례 : βM - Component 를 정시한 IgA Myeloma 3 예보고
김상인 ( Sang In Kim ),한심석 ( Shim Suk Hahn ),김정용 ( Chung Yong Kim ),최동엽 ( Dong Yup Choi ),김재하 ( Jae Ha Kim ),김노경 ( Noe Kyeong Kim ) 대한내과학회 1968 대한내과학회지 Vol.11 No.10
3 cases of IgA myeloma showing βM-component confirmed by hematologic and immunoelectrophoretic method is presented. The common chief complaints were headache, bone pain and those associated with the symptoms of anemia. Marked anemia with leukopenia and ele
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김재하 ( Jai Ha Kim ) 한국축산학회 1978 한국축산학회지 Vol.20 No.5
It was reviewed what food-borne diseases are, how significant it is, how they are spread, what is the present Canadian situation in this aspect, and what Canadian governments are doing and what endeaver and suggestions are made in an effort to minimize the outbreak of this disease. Recently, recognition of the diseases from microbiological contamination of foods has led to national and international attention in which public health problems have been brought sharply into focus. Some of these are: 1. Despite renewed interest in microbial contamination of foods which endangers public health, current efforts are inadequate to cope with problems associated with rapid changes and new developments in the food supply. 2. The reports of food-borne diseases which submitted to the federal health protection branch by each provinces are only a small part of actual incidences occurred in Canada. Therefore, more thorough investigation and more consistent reporting of these illnesses are needed for the guidance by industry and government in their efforts to protect the public health. 3. Improved methods in microbiological test and rapid methods for isolation of microbes are needed for the establishment of more advanced standard procedures. 4. Continuing evaluation of food protection programs and practices is necessary to keep them abreast of the technological changes. 5. Wide national and international research and educational programs are necessary to promote new knowledge, technology and public understanding for the prevention of food-borne diseases. To solve above problems, following cooperative activities could be proposed as a national program of food protection. 1. Improvement in the investigation and reporting of food-borne disease by: a. Generating more active participation on the part of practicing physicians, through special education and encouragement by medical organization as well as public health agencies. b. Developing greater interest and teamwork among health department personnel by improve leadership, education, and support from the Public Health Service. c. Devising better techniques for the epidemiological study of disease outbreaks. d. More detailed analysis of reported illnesses and publication of findings in a form that will encourage prevention and control by industry. e. Centralization of responsibility in one component of the Public Health Services environmental health structure. 2. Continuous surveys of potentially hazardous foods for objectionable microbial contaminants. 3. Modernization of food protection programs and practices. 4. Major expansion of research and education in food microbiology as well as all other fields concerned with the relation of food to health. It is further recommended that special study be given the evaluation of microbiological hazards associated with new food products and technologies. This study should particularly include microbiological study in the early phases of process development and of distribution and marketing of new products. Finally, before general microbiological specifications, limits, or standards are formulated, it is recommended that surveys of the various branches of industry be made to determine attainable levels of microbiological contamination of foods under conditions of good commercial practice.
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