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千章鎬 嶺南大學校 基礎科學硏究所 1993 基礎科學硏究 Vol.13 No.-
In this note we prove that if R is an affine noetherian PI algebra over an algebraically closed field k, then the skew polynomial ring R[χ: α] is catenary where αis an automorphism.
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千章鎬,朴準元 嶺南大學校 基礎科學硏究所 1990 基礎科學硏究 Vol.10 No.-
We obtain equivalent conditions of δ-prime rings. J.Bergen, S.Montgomery and D. S. passman [1] proved that if R contains no nonzero nil δ-ideal, then R is a subdirect product of δ-prime rings with the property that every annihilator ideal is nilpotent.
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Two-step Solvable Lie Superalgebras의 Growth에 대한 소고
千章鎬,李鍾淑 嶺南大學校 基礎科學硏究所 1995 基礎科學硏究 Vol.15 No.-
We show that the growth of the two-step solvable Lie superalgebra is poly-nomially bounded and its enveloping algebra is subexponential.
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千長鎬 光云大學校 1987 論文集 Vol.16 No.-
도핑되지 않은 多結晶 半導 粒子와 電解質界面의 表面準位와 電氣二重層을 極小電氣 泳動 測定方法에 依한 제타電位로써 定性的 解析을 하였다. 懸濁液은 도핑되지 않은 多結晶 실리콘과 砒化갈리움 粒子를 各各 KCI電解質內에 浮遊시켜 準備하였다. 도핑되지 않은 多結晶 실리콘과 砒化갈리움의 제타電位 範圍는 各各 47.8-80.1mV와 -30.1-17.9mV이었다. 도핑되지 않은 多結晶 실리콘의 KC1濃度에 對한 제타電位 變化는 도핑된 多結晶 실리콘과 비슷하였으며, 砒化갈리움은 2個의 제타電位 反轉點이 實驗的으로 觀測되었다. 도핑되지 않은 多結晶 실리콘과 砒化갈리움의 表面準位는 正으로 帶電된 도너 表面準位에 依하여 이러한 表面準位는 半導 酸化膜과 電解質 界面의 吸着된 이온表面準位, 卽 緩行準位에 起因된다. Ⅰ. Introduction Ⅱ. The interfacial charges and zeta potentials Ⅲ. Materials and experimental methods (1) Preparation of suspensions (2) The microelectrophoresis measurements Ⅳ. Experimental results Ⅴ. Discussion and conclusion References
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千長鎬 光云大學校 1988 論文集 Vol.17 No.-
도핑된 실리콘半導體와 有機溶媒(??, CH₃OH, ??)界面의 空間電荷效果와 도핑되지 않은 多結晶 砒化갈리움과 電解質(NaCl, KCl, KI溶液)界面의 제타電位 反轉現象을 電氣泳動測定 方法을 使用하여 定性的 解析을 하였다. 제타電位反轉現像, 空間電荷效果, 電氣二重層은 界面의 表面準位, 電氣 및 特性的 吸着, 吸着된 이온의 크기와 電氣陰性度의 영향을 받았으며 剪斷面의 位置는 Helmholtz外面(OHP)에 거의 一致하였다.
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오길호,장춘서,이기수 金烏工科大學校 産業技術開發硏究院 1999 産業技術開發硏究 Vol.15 No.-
Autonomous objects have capabilities of navigating through the underlying network and performing various tasks at each node. By these powerful capabilities they can be applied to several distributed application areas. Tn this paper, we propose a method for on-line maintenance of distributed software systems by using autonomous objects. In our method, multi-version computation techniques are applied. We think it is very feasible for on-line distributed software maintenance.
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박장숙,전진호,김성준,손혜숙,이종태 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4
Objective : The unprivileged children without lunch(UCWL) has been being markedly increased and becoming one of the social problem in Korea. This study was performed to assist the development of efficient support program through the investigation of the status and characteristics of the UCWL. Methods and Material : Subjects were 104 students sho were receiving the meal aid from the six social welfare facilities and 110 ordinary students of an elementary school in Pusan area. Questionnaire survey was conducted from February to March, 2001. Data was analyzed using SPSS program(ver 10.0). Results : There was no difference in gender and school years' distribution. The phenomenon of family deficient, instability of parents' job, unsatisfaction to the home's atmosphere, ill adaptation to their school life, and be alienated from their colleague were more frequent in UCWL(p<0.05). Impulse of runaway from home and suicide showed no difference, however, the present worries, preference of way for assist showed differences(p<0.05), The majority(88%) of UCWL has been giving the meal and less than on year. The most common way was food stuff(76%) and financial support for school meal program(73%), while the most preferred way was financial support for everyday life(43%). Conclusion : UCWL satisfied and gave thankful mind to the present supports, however, showed negative aspects - like emotional unstability and difficulties in their school life. Therefore, it thought to be needed the touch on the emotional aspects, not only on the formal and economic aids.
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번계전탕액 投與가 생쥐의 腫瘍致死細胞 및 抗炎症細胞의 活性度에 미치는 影響
李長泉,辛民敎,宋昊埈 圓光大學校 韓醫學硏究所 1991 원광한의학 Vol.1 No.1
This study carried out to know the effects of Tetragonia on tumor immunities and the inflammatory responses. The tumor immunities were measured by checking the antibody dependent on cellular cytotoxicity(ADCC) and natural killer(NK) cell activity. The effects of Tetragonia on inflammatory responses were measured by evaluating the amount of reactive oxygen intermediate(ROI) in the neutrophils and macrophages. The innate immunity was evaluated by measuring the phagocytic activity of macrophages. The results obtained were as follows : 1. Tetragonia increased the antigen specific ADCC without affecting antigen non specific NK cell activity in tumor immunities. 2. Tetragonia severely decreased such ROI as O^-_2 and H_2O_2 in both neutrophils and macrophages. 3. Tetragonia increased the phagocytic activity of macrophages. The results of this study suggest that tetragonia might be effective on tumor immunity and such inflammatory diseases as rheumatoid arthritis and allergic diseases.
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자외선에 의하여 유발되는 염색체 이상과 자매 염색 분체 교환에 미치는 calmodulin의 영향
이천복,김장호 慶星大學校 1993 論文集 Vol.14 No.4
The present study was performed to elucidate not only the effects of clamodulin (calcuim receptor) on the damages and their recovery processes at the chromosomal level, but also the possible relationship between chromsome aberration and sister chromatid exchange(SCE). To obtain a clear understanding of them ,the experiment were undertaken to the effects of trifluoperazine (Tfp; calmodulin inhibitor) on chromosome aberrations and sister chromatid exchchanges induced by ultraviolet light(UV). The results obtained were as follows: 1)Both the chromosome aberrations and sister chromatid exchanges were not induced by the treatment of various concentration and hours of Tfp. 2) Tfp inhibited chromosome aberrations induced by UV-light regardless of the concentration and hours of treatment. 3) In the groups treated with 5μM Tfp for 1 hour after exposure to UV-light, sister chromatid exchanges induced by UV-light were little effected. However, in the groups treated with 10μM or 20μM Tfp, sister chromatid exchanges induced by UV-light increased with Tfp unlike chromosome aberrations. 4) Treatment of Tfp for 36 hours after exposure to UV-light increased the sister chromatid exchanges UV-light. The aspects of increase were proportional to the concentration of Tfp. These data indicate that Tfp itself dose not induce chromosome aberrations and sister chromatid exchanges, but is concerned in chromosome aberrations and sister chromatid exchanges induced by UV-light; that is, it has the ability to decrease chromosomal aberrations but to increase sister chromatid exchanges. In conclusion, calmodulin has an effect on the damages and their recovery at the chromosome level, the induction pathways of chromosome aberrations and sister chromatid exchanges seems to be controlled by the different mechanisms.
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