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조현석,김대희,송근호 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2011 動物醫科學硏究誌 Vol.18 No.1
A 8-year-old male castrated yorkshire terrier dog with a infectious tracheobronchitis was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. Infectious tracheobronchitis was diagnosed by the history, clinical signs, polymerase chain reaction, laboratory examinations (complete blood count, serum chemistry) and the diagnostic imaging. The clinical signs were improved after antibiotics treatment. Doxycycline is effective for Bordetella bronchiseptica as infectious tracheobonchitis in a dog.
抗癌劑가 家兎 赤血球膜의 Na-K-ATPase 活性度에 미치는 影響
金光鎭,張石鍾,朴海根 충남대학교 의과대학 지역사회의학연구소 1983 충남의대잡지 Vol.10 No.2
The object of this study was to investigate the action of the anticancer drugs (5-Fluorouracil and Mitomycin C) on the Na-K-ATPase activity and the effect of gingseng extract on the action of drugs. The blood was obtained from the cannulated carotid artery of rabbit, and the red cell ghosts were purified by the method of Rosenberg and Guidotti, and the amounts of the isolated inorganic phosphorus as a index of Na-K-ATPase activity was determined by the method of Fiske and Subbarow. And it was compared the difference between the effects in the presence or absence of ginseng extract at the maximal concentration to be inhibited Na-K-ATPase activity by drugs. The results were summarized as follow: 1. 5-Fluorouracil was significantly inhibited the activities of Na-K-ATPase activity and Mg-ATPase at the maximal dose(150 ㎎). 2. Mitomycin C was significantly inhibited the activity of Na-K-ATPase alone at the maximal concentration(1.0 ㎎/ml). 3. The ginseng extract was significantly decreased the degree of the inhibited Na-K-ATPase activity. From the above results, it was suggested that one of the causes of side-effects was the result of the inhibited material transport across the cell membrane by the drugs, and ginseng extract may be reduced the degree of inhibited Na-K-ATPase activity by any mechanisms.
김세훈,장석종,박해근 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2
It has been well known that respiratory status has affected the intracranial pressure by' changing the brain blood flow, and also ethanol has affected the respiratory system by inhibiting the respiratory center and has affected cardiovascular system by inhibiting the cardiac performance and decreasing the total peripheral resistance. However, effect of ethanol on intracranial pressure has not been studied satisfactorily. Thus, following experiment was performed to examine the change of the intracranial pressure after ethanol administration in the cats. Ethanol was infused intravenously by lg ethanol per kg body weight for 15 minutes. Intracranial pressure was measured through balloon inserted between epidura and skull. Arterial blood pH, Po_2, Pco_2, ethanol concentration were measured. The results obtained are surnmerized as follows. Blood ethanol concentration increased by linear and peaked at 15 minutes(blood ethanol concentration was 409±31 mg%). Po_2, Pco_2. and pH at 15 minutes were 80. 3±5. lmmHg, 49.2±3.3mmHg and 7.24 =0.015 respectively. Blood pressure began to decrease and arterial pulse pressure began to increase at 10 minutes and more and more at 15 minutes respectively. Intracranial pressure began to increase at 10 minutes (blood ethanol concentration was 316±33 mg%) and peaked as 168.7±11.4% contrast to control at 15 minutes and also amplitude of intracranial pulse wave was increased. From the above results, it was suggested that intracranial presssure and amplitude of intracranial pulse wave were increased significantly by inhibiting respiratory center and thereby dilatating cerebral blood vessels with intravenous ethanol administration.
이건미,김석일,배진희 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.5
The purpose of this study was to investigate causal attributions of "excitement" experiences in athletes. The questionnaire was consisted of competitive events and levels, level of "excitement", causal attributions of "excitement", public self-consciousness and social anxiety. Out of a total 370 athletes, 356 athletes(288 male students and 68 female students) filled out the questionnaire completely and were included in subsequent analysis. The main findings are summarized as follows. 1) A factor analysis of their responses (causal attributions of "excitement") revealed six factors: "worry about failure", "pressure of responsibility", "unfamiliarity of game situations", "personality traits", "insufficiency" and "other awareness". 2) The relationship between competitive events and 6 factors of causal attributions were not found significantly in this study. But only in performance type event(gymnastics and rhythmic sportive gymnastics), the factor of "other awareness" scored higher than those of other competitive events. 3) In 4 factors of causal attributions: "unfamiliarity of game situations", "personality traits", "insufficiency" and "other awareness", the athletes of national level scored lower than those of district level, and municipal level. However, in "pressure of responsibility" the athletes of national level scored higher than others. 4) Between athletic years(over 10 years and under 10 years), the athletes for over 10 years showed significantly lower scores than those of under 10 years in all of factors. 5) The higher the athlete's levels of "excitement" was, the higher his or her public self-consciousness and social anxiety were.
산소 혼합비에 따른 Ba_(0.7)Sr_(0.3)TiO₃박막의 유전체 특성
홍석민,임성민,김호건,김옥경 한양대학교 이학기술연구소 1999 이학기술연구지 Vol.1 No.-
Ba과 Sr의 화학당량비를 조절하여 Ba_(0.7)Sr_(0.3)TiO₃분말 시료를 제조하여 각각 1,200℃와 1,300℃에서 calcining과 sintering을 실시한 후 3 inch 성형틀로 Ba_(0.7)Sr_(0.3)TiO₃인 sputtering target를 제작하였다. MIM구조의 capacitor를 위하여 하부전극을 Pt(1500Å)/TiN(2000Å)/SiO₂/Si로 하고, 제작한 target를 이용하여 RF sputtering방법으로 BST박막을 증착하였다. 제작한 박막의 결정구조를 X-선 회절계(XRD)로 분석한 후 Al을 상부전극으로 증착하여 축전기구조로 C-V와 I-V의 전기적 특성을 얻었다. 제작된 박막의 결정구조를 XRD 측정으로 확인한 결과 550℃ 이상의 기판온도에서 결정성장이 양호함을 보였다. 유전상수와 유전손실이 기판온도와 sputtering 가스의 산소 혼합비에 영향을 받는 것으로 확인되고 I-V를 통한 전기적 특성에서 전도기구가 Schottky 장벽에 의한 것과 높은 인가전압에서 space charge limited (SCL) 전도 특성을 보였고, 누설전류의 값은 표면구조의 영향으로 산소가스의 증가에 따라 감소하였다. Ba_(0.7)Sr_(0.3)TiO₃powders were prepared by changing stoichiometry of Pb and Ba. After they were calcined and sintered at 1200℃ and 1300℃ respectively, BST sputtering targets were made in 3 inch mould. For MIM structure capacitors, Pt(1500Å)/TiN(2000Å)/SiO₂/Si were used for bottom electrodes and the BST thin films were sputtered on bottom electrodes. After we analysed their structures by XRD, Al was evaporated on the BST films for MIM capacitor and we investiaged the electrical properties by measuring of C-V and I-V. We found that the structures of the films showed good crystalllinity above 550℃ from the results of XRD measurements. We supposed that the dielectric constant and dielectric loss of films were affected with substrate temperature and oxygen ratio of sputtering gas. In I-V behavior, we supposed that the conduction mechanism was Schottky conduction and space charge limited(SCL) conduction in high voltage range.