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子宮摘出이 家兎 卵巢의 機能에 미치는 影響에 關한 實驗的 硏究
金善行,羅重烈,李壽鍾 고려대학교 의과대학 1983 고려대 의대 잡지 Vol.20 No.3
To understand effects of hysterectomy on the retained ovarian function in the rabbits, pseudopregnancy was induced in seven rabbits, control group, by injection of 50㎍ of ethinyl estradiol and 100 IU of hCG subcutaneously. And a week after hysterectomy of another seven rabbits, hysterectomized group, pseudopregnancy was induced with 50㎍ of ethinyl estradiol and 100 IU of hCG. The serum levels of progesterone and estrogen were determined every 3 day by radioimmunoassay and microscopic examination of the ovaries was performed in each group. Both findings in each group was compared and obtained following results. 1. Luteal phase in hysterectomized group was prolonged about 6 days compared to control group. 2. Histologic examination of ovaries revealed functional corpora lutea in hysterectomized group up to 30 days of experiment. 3. Serum estradiol level and histological picture of the ovarian follicles showed no significant differences between two groups during experiment. 4. These findings show that experimental hysterectomy has inhibitory effect on regressive change of the corpora lutea but has no effect on ovarian follicle. These results suggest that PG is the luteolytic hormone in the rabbit. But, it was presumely concluded that the result in estrogen showed which PGF₂α or some other substances in the uterus might be related to the mechanism of folliculogenesis in ovary according to references.
Cr(Ⅲ)과 Ρ-Dimethylaminoazobenzene과의 착물형성에 관한 연구
김은수,유수창,이국행 群山大學校基礎科學硏究所 1996 基礎科學硏究 Vol.11 No.-
아세토니트릴, 메탄올 그리고 아세토니트릴-메탄올 혼합용매에서 Cr(Ⅲ)과 p-Dimethylaminoazobenzene(DMAB)을 반응시켜 착물을 얻었다. 15-35℃의 온도범위에 걸쳐 UV-Vis 분광기를 이용하여 다양한 열역학적 성질들을 얻었다. 분광학적 결과들은 반응성과 반응속도가 △H와 △S에 의해 조절된다는 것을 보여주었다. 이온종들의 거동은 전기전도도법으로 연구하였으며, 착물 대 리간드의 비는 1:1과 1:2를 이루는 것으로 나타났다. 착물의 구조는 특징적인 라만밴드들의 변화를 관찰함으로써 예상하였다. The complex of Cr(Ⅲ) with p-Dimethylaminoazobenzene(DMAB) was studied in acetonitrile, methanol and acetonitrile-methanol mixture solvents. Various thermodynamic properties were obtained using UV-Vis spectroscopy at temperature range 15-35℃. The spectroscopic results showed that the reactivity and the reaction rate were controlled by △H, △S. The behavior of the ionic species was studied by a conductometric method, and the ratio of the metal to ligand was found to be 1:1 and 1:2. The structure of the complex was predicted observing the changes in characterisitic Raman bands.
신행봉,김종수,김홍래,한성현 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
In this paper, it is presented a new technique to the design and real-time implementation of fuzzy control system based-on digital signal processors in order to improve the precision and robustness for system of industrial robot. Fuzzy control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the real of industrial processes. In this thesis, a self-organizing fuzzy controller for the industrial robot manipulator with a actuator located at the base is studied. A fuzzy logic composed of linguistic conditional statements is employed by defining the relations of input-output variable of the controller, In the synthesis of a FLC, one of the most difficult problems is the determination of linguistic control rules from the human operators. To overcome this difficult, SOFC is proposed for a hierarchical control structure consisting of basic level and high level that modify control rules. The proposed SOFC scheme is simple in structure, fast in computation, and suitable for implementation of real-time control. Performance of the SOFC is illustrated by simulation and experimental results for robot with eight joints.
교정치료를 받은 성인 정상 교합자의 연조직 측모 변이에 관한 연구
이수행,김상철 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.2
The purpose of this study was to evaluate the variation of soft tissue profile with respect to sex and skeletal patterns in adults with treated normal occlusion. Post-treatment lateral cephalometric head films of 134 cases(55 males, 79 females) were traced and measured. The ANB angle was employed to classify samples into horizontal patterns(skeletal class Ⅰ, Ⅱ, Ⅲ groups) and sella-nasion to gonion-menton angle was employed to classify samples into vertical patterns(normal and vertical groups). Various measurements were evaluated and compared by sex and skeletal patterns. The results were as follows; 1. Soft tissues of the upper lip, the lower lip, and the chin of male group were significantly thicker than those of female group. 2. No significant differences were found in the soft tissue thickness and lip length between normal and vertical group. 3. Sn extension of skeletal class Ⅲ group was significantly longer than that of skeletal class Ⅱ group, and Ils extension of skeletal class Ⅱ group was significantly longer than that of skeletal class Ⅲ group.
GIS의 활용을 위한 가로수 DB 모형 개발의 개념적 설계방안
곽행구,조영환,김용수 木浦大學校 沿岸環境硏究所 1998 沿岸環境硏究 Vol.15 No.1
Various idea of conceptional design of GIS database of street tree of Gum Nam Ro in Kwangju emphasizing location information which is significant for tree manager were compared and analyzed for efficient open space management. The results obtained were as follows. First, the information of location is essential for tree manager based on the findings of the comparative analysis of 3 conceptional design of street tree database. Second, elements of street database except tree location were path, landmark, node, direction, block, district and building. Tree managers differently recognized these elements according to the direction and interrelation of location. Third, ranking of these elements were based on the comparative analysis of 3 conceptional designs. The distance between a targeted tree, a street node and perpendicular line of streets were very important for finding out the location of a targeted tree. Thus, the database which can discover effectively the direction, distance and location of street trees can help to improve the efficiency of timely tree management.