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      • SCOPUSKCI등재

        악관절조영술이 악관절 조직에 미치는 영향에 대한 병리조직학적 연구

        나경수,조봉혜 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.1

        The study was performed to observe the effects of arthrography on the tissues of temporomandibular joint histopathologically. Among 17 rabbits(34 joints), 2(4 joints) were used as normal control group, others (30 joints) were experimentally arthrographed using 0.03 ml diatrizoate meglumine (Hypaque meglumine 60, Wintrop, U.S.A). The rabbits were sacrificed at 2-hour, 1-, 2-, 4- and 7-day after experiment and the tissues of temporomandibular joint were prepared according to the usual method for light microscopic examination. The results were as follows: 1. There were no changes of the fibrous connective tissues of the condylar fossa, the fibrous connective tissues and hyaline cartilages of the condyle, and the articular disk. 2. In 2-hour experimental group, the proliferation of the surface synovial membrane cells, the congestion and hemorrage of the vessels were observed. 3. In 1 and 2-day experimental group, minimal lymphocytes infiltration was observed with the proliferation of the surface synovial membrane cells, the congestion and hemorrage of the vessels. 4. In 4-day experimental group, the diminution of the proliferation of the surface synovial membrane cells was seen, but there was no vascular changes. 5. In 7-day experimental group, the tissues showed similar appearance to the normal control group.

      • 식물플라크톤의 세포외배출유기물을 고려한 소양호의 1차생산과 유기물 부하

        남궁현,김범철,황길순,최광순,김철구 江原大學校 附設 環境硏究所 2001 環境硏究 Vol.18 No.-

        The autochthonous and allochthonous organic carbon loading were measured in Lake Soyang, to estimate the amount of carbon loading into the lake and the contribution of their sources to the lake's carbon loading. Autochthonous carbon loading was estimated from phytoplankton primary production with the extracellular organic carbon(EOC). Allochthonous loding was determined by measuring dissolved organic carbon(DOC) and particulate organic carbon(POC) concentration in the main inflowing Soyang River. Both autochthonous and allochthonous organic carbon loading were high during the summer, from July to September, and accounted for 43.2% and 71.7% of the annual loading, respectively. Primary productivity was elevated up to 1,000 mgCm^(-2)d^(-1)during summer and lowest in winter. EOC production from phytoplankton was also large in summer, resulting in a high DOC concentration in the lake water. Primary production of phytoplankton and allochthonous organic matter loading from the watershed contributed to 53.6% and 46.4% of total loading, respectively. The EOC production accounted for 4.4~21.2% of POC primary production, implying that EOC production of phytolankton must be considered in estimation of primary production.

      • 老人들의 公園訪問 滿足度와 生活滿足度 影響要因 分析

        김경철,김교준 龍仁大學校 1997 용인대학교 논문집 Vol.13 No.-

        The study aimed to investigate how the selected factors affected to park visit satisfaction and life satisfaction of senior citizens dwelling in metropolitan area. The sample size was 554 male and female seniors aged 60 and over, and the data were collected at three city parks during the month of October 1995. And the data were analyzed by Chi-square test and Logistic regression. The results were varied in each survey area, however, it indicated that the higher aged led to the more frequent park visit, and the higher park visit satisfaction(〈Table 5, 7〉). Analysis also showed that the selected determinants influenced park visit satisfaction and life satisfaction in varied degrees, however, park visit satisfaction was affected proportionately, by acquainting with new people, visit motivations, freqencies of visit, park activities, and duration of stay in park(〈Table 12〉) , and life satisfaction was influenced by park visit satisfaction, visit motivations, duration of stay in park, and acquainting with new people proportionately(〈Table 16〉).

      • Nickel 觸媒에 의한 일산화탄소의 轉化反應에 관한 硏究

        姜京熙 단국대학교 1988 論文集 Vol.22 No.-

        The Conversion of Carbon monoxide to Carbon dioxde on Nickel Catalyst was investigated by Continuous reaction technique Nickel Catalyst were Prepared by the sream distillation pure Nickel hydroxide under Vacuum(Ca, 10^-2 Torr) at 290℃ for three hours and Characterized by means of X-ray diffraction and BET studies. The Nickel Catalyst is investigated by residual gas analysis for differential partial pressure of carbon monoxide and oxygen and temperature from 220℃ to 290℃. The Kinetic analysis of conversion data indicates the occurrence of first order, also molratio of p_O2/P_CO is 1.3. The activation energy of Nickel catalyst was 12.5Kcal/mole, also, equation of reaction Velocity is rate V=Ae^(-2.29×104/Rt) P^0.99_CO P^9.50_Po2

      • Centering to the boys' high school team : 남자 고등부를 중심으로 Centering to the boy's high school team

        남궁옥,원충희 公州大學校스포츠科學硏究所 1995 스포츠科學硏究所論文集 Vol.- No.9

        29 Boy's High school Hockey teams took part in the 36th National Assortment Hockey Championship Series, the 74th national Athletic Meeting and '94 Springtime National man and women Hockey competition which were held in 1993. Investgating the number of shooting and success rate in 43 games, I came to conclusion as follows : 1) In whole shooting, the number of shots in the area D was 48.89%, in the area B was 27.91%, in the area C was 19.07%, in order of shootings (p<.10). Success rate of shooting was about 26% in each A, B and C area, and it was comparatively high. 2) In angle shooting, the area Ⅲ marked 62.78% which was the highest success rate.(P<.10). The area Ⅳ marked 20.37%, and the area Ⅱ 13.19%. The success rate of shooting in the area was Ⅱ, Ⅲ, Ⅳ 23.73%, 23.60%, 20.91% which suggests the balanced distribution. Especially the success rate of shooting in the area I was 50%. and it says that boldness in shooting is very necessary. 3) In many kinds of shootings, penalty corner shooting was 39.44%, assist by pass was 23.89%, loose ball was 14.63%(P< .50). The score of penalty corner shootings was 35.78% which marked the highest goals. In assist by pass, solo dribble, free hit and penalty corner except penalty stroke, the success rate of shooting was 23.75% on the average. 4) At the position of stick used in shooting, fore position was the highest frequeney in use. It was 91.1%(P< .01). One touch action shooting was 59.63% which marked the highest frequency in shooting(P< .05). The rate of score was 51.22%, but in the success rate of shooting, direct action shooting is higher 32.18% than that. 5) Hit and push shooting was 84.07% of the whole shootings. Push shooting was the best in the rate of score(P< .05). In the success rate of shooting, flick shooting(51.35%), was higher than push shooting (27.27%).

      • 四七論爭에서의「四端」解釋

        宋兢燮 慶北大學校 文理科大學 1974 文理學叢 Vol.2 No.-

        This essay treats the theoretical disputes over '4 Dan-7 Jong' theory in 'Ri-ki' philosophy between Lee Toigye (1501∼1570) and Ki Ko-bong (1527∼1572) The controversy begun in 1559 and continued for 7 years, can be devided into 3 periods in its development in content, the first of which, the theoretical developments of the two philosophers, has been treated here in their mutual comparisive aspects. Ki Ko-bong refuted Toigye's theory, and Toigye on his side refuted Kobong's refutation supporting his own theory. I here support Toigye on this point on several grounds. I go on thereafter to present the following problems of importance. (1) the Being, defined as 'Thin' in general, is devided into real and ideal Beings. (2) Everything is derived from, and explained by 'Thing', to which is applied Ri-ki logic, the logic which is plane-level logic, unlike the one which goes through contradiction to unification. (3) The method of philosophy is regarded as the way to the progressive realization of Goodness through introspection; the way includes nothing of the conversion from quantity to quality, but only the quantative development. (4) The principle on which to define good and bad is, here, 'Ju-Ri' (Ri as the main role), or 'Ju-Ki' (Ki as the main role), the theory of mutual appearance of Ri and Ki. (5) The problem of the systemic order of values (goodness). The five problems above are very important in establishing Toigye philosophy on a newer and richer ground.

      • 선형 시스템의 모델 축약에 관한 연구

        金慶哲,崔炯範 홍익대학교 산업기술연구소 1998 産業技術 Vol.8 No.-

        The modelling of complex dynamic system is one of the most important subjects in engineering. A model is often too complicated to be used in real problems so approximation procedures are often used to achieve simpler models than the original one. The concepts of impulse energy approximation is introduced. The reduced model in obtained from the most significant pairs of alpha and beta parameters. There exists errors because from the most significant pairs of alpha and beta parameters. There exists errors because of the truncation. To overcome this problem an improved impulse energy technique is presented in the paper by appropriately selection alpha and beta parameters. There exists error because of the truncation. To overcome this problem an improved impulse energy technique is presented in paper by appropriately selecting alpha and beta parameters to retain more impulse response of the original system. This algorithm is programed using MATLAB language. A reduced-order model for the excitation system of power plants as an example study is considered This technique seems to be easy to perform and shows a good simulation results.

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