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서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
홍관이,이광재,김두경,부기원,노성규,한상준,박기동,오수일,문병용,이철규,박장평,엄기진,박남환 江原大學校附設 體育科學硏究所 1984 江原大學校附設體育科學硏究所論文集 Vol.- No.9
This study is designed to grasp the elements and situations of stage fright in order to propose a part of ways to cope with it. We make 511 top-class high school players, male and female, in the central districts (Seoul, Inchon, Kyungki, Chungbuk, and Kangweon Province) on object of questionnaire, and get the following results. Through players generally have all-round characters they show weakness in the superiority and emotional stability while showing strength in the sonformity. This fact comes to be related to the elements which cause stage fright. Physiological changes also have many effects on the symptom of stage fright. Especially, stage fright increases when players show sensitive reaction to the self-consciousness of final consequence which comes from the tension or uneasiness of sympathetic nerve, Thus, it turns out that players make use of reducing psychological burden by physical exercise or adjusting the level of demanded result in order to release the stage fright.
Total oxy-radical scavenging capacity assay를 이용한 taurine과 hypotaurine의 항산화 활성 측정
오정민,주홍매,김상겸,김봉희 忠南大學校 生命科學硏究院 醫藥品開發硏究所 2006 藥學論文集 Vol.21 No.-
Taurine, a sulfur containing non-amino acid, is one of the most abundant intracellular amino acid in humans, and hypotaurine is a precursor of the synthesis of taurine. While it is widely believed that taurine may play an important role in protecting cells against toxic injury by functioning as an antioxidant, there is a lack of evidence to support this hypothesis. In this study, total oxy-radical scavenging capacity(TOSC) assay was used to evaluate antioxidant activity of taurine and hypotaurine against peroxyl radical, hydroxyl radical and peroxynitrite. The present results show that taurine does not have oxy-radical scavenging activity and hypotaurine is comparable to glutathione, an antioxidant substance, in oxy-radical scavenging activity. The results suggest that protective effects of taurine against oxidative stress may not be associated with its direct oxy-radical scavenging activity. Difference in oxy-radical scavenging capacity between taurine and hypotaurine may be ascribed to their sulfur oxidation state.
천연 Zeolite를 이용한 매립지 침출수의 고농도 암모니아성 질소 제거에 관한 연구
오재일,홍성효,이선구,최영화,안봉규 중앙대학교 기술과학연구소 2002 기술과학연구소 논문집 Vol.32 No.-
천연 제올라이트의 일종인 Clinoptilolite를 이용하여 매립지 침출수내의 암모니아성 질소를 제거하는 실험을 수행하였다. 고정상 칼럼을 이용한 인공 침출수와 실제 침출수 조건의 실험에서 배출농도가 유입농도의 5%인 시점을 파과점으로 상정할 때, 인공 침출수 조건에서의 파괴시간은 53hr, 실제 침출수 조건에서의 파과시간은 32.5hr으로 나타났다. 또한, 허용 파과점 및 소모점에서의 제올라이트 100g(건조중량)당 제거된 암모늄 이온 성분량은 인공 침출수의 경우 각각 79.30meq/100g, 93.34meq/100g이었으며, 실제 침출수의 경우 각각 48.60meq/100g, 57.60meq/100g으로 나타났다. 침출수 조건의 경우 인공 침출수에 비해 약 39% 가량의 제거 효율 저하를 보이고 있으며, 이는 실제 침출수에 존재하고 있는 공존 양이온의 영향으로 사료된다. 실제 침출수 내에서 공존 양이온의 용출 특성을 보면, Na, Ca, Mg의 용출량은 증가하나 K는 용출량이 감소하는 것으로 나타났다. This experiment was conducted to remove the ammonia nitrogen in the landfill leachate by Clinoptilolite which is a sort of the natural zeolite. In fixed-bed column test driven in the artificial and actual condition of the leachate, when the ejection concentration was supposed the point of 5% of the initial concentration as the breakthrough point, the breakthrough time was 53hr in the artificial condition of the leachate and was 32.5hr in the actual condition of the leachate. The ingredient volume of the removed ammonium ion per 100g(based upon the dry weight) of the zeolite in the allowed breakthrough point and exhaustion point were individually 79.30meq/100g, 93.34meq/100g in the artificial leachate and 48.60meq/100g, 57.60meq/100g in the actual leachate. In case of the actual condition of the leachate, the removal efficiency was decreased by 39% than the artificial condition of the leachate, and it seems to be caused by the coexist cation in the actual leachate. The ejection characteristics of the coexist cation in the actual leachate was observed that Na, Ca, Mg was increased and K was decreased.
Auto Line에서 공작기계 열변형에 따른 위치오차 억제에 관한 연구
홍성오,조규재 朝鮮大學校 機械技術硏究所 1999 機械技術硏究 Vol.2 No.1
Development of high speed feed drive system has been a major issue for the past few decades in machine tool industries. The reduction of the tool change time as well as rapid travel time can enhance the productivity. However, the high speed feed drive system generates more heat in nature, which leads thermal expansion that has adverse effects on the accuracy of machined parts. The detail of the model proposed is described in the paper together with the experimental methodologies using a proposed compact measurement system to examine the validity of the proposed approach. The results showed the machining accuracy could be maintained to better than ±5㎛ while using this sensor.
CNC 선반에서 볼 나사 열변형에 따른 위치결정 정도 개선에 관한 연구
홍성오,조규재,김재열 한국공작기계학회 1999 한국생산제조학회지 Vol.8 No.1
Thermal expansion of the ball screw can directly affect the accuracy of positioning along the ravel axis in the semi-closed loop type CNC Lathe. In this paper, use of MACRO variables can make the thermal displacement of the ball screw estimated. Also, the estimated displacements of the ball screw are controlled by calculation the interval of pitch error rate in the Numerical Control(NC). Under the constant operating conditions, the thermal expansion of the ball screw was measured to confirm the effectiveness of the compensation method in the CMC Lathe. By using this method the results show that the thermal displacement of the ball screw could be reduced to 20% compared with ordinary method.
베어링 조합방법이 이송축 열변위에 주는 영향에 관한 연구
홍성오,김선진,조규재 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-
One of the important technical issues is how to decrease thermal expansion of ball screw in proportion to the increase of machining speed. when measuring force of stretch of ball screw, since not only actual expansion and the value of bending have to be considered, it's impossible to definite the exact value of expansion. In addition, support bearings of ball screw gain considerable force in axial direction. It also generates thermal expansion on the ball screw, and deteriorates the bearings. In conclusion, it's impossible to give the pretension enough to absorb the all elongation due to thermal expansion generated during machine running. If gave, bed, column and saddle are all bent to change machine accuracy, and the support bearings of ball screw are damaged. The purpose of this paper is to study the pretension of support bearing of ball screw in machine tool.
Acetonitrile-Methyl alcohol 혼합용매중에서 β-phenylethyl ρ-chlorobenzenesulfonate와 Aniline과의 반응속도 연구
홍성완,오해범,한광래 又石大學校 1985 論文集 Vol.7 No.-
The reactions of β-phenylethyl p-chlorobenzene sulfonate with aniline have been studied in acetonitrile-methyl alcohol by conductometric method. The temperature of reaction were 45℃, 50℃, 55℃ and the activation thermodynamic parameters were evaluated. In results, the rates of reaction were increased with MeOH content. The isokinetic relationship was shown ΔH^≠ and ΔS^≠ its temperature was 293.1°K It was also found that the specific solvent effects were more important than the bulky solvent effect in the rate of reaction.
사회적지지 요법이 고혈압 환자 역할 행위 이행에 미친 효과의 지속에 관한 연구Ⅱ
홍미순,박오장,장금성 성인간호학회 2000 성인간호학회지 Vol.12 No.4
The purpose of this study was to identify the effect of social support revealed in the time duration of sick role behavior compliance on the Patients with hypertension using Quasi-experimental research design. Data collection was made through the interview surrey technique from the hypertensive patients who received social support intervention(experimental group, n=41) and from those who were not exposed to the intervention(control group, n= 34) The subjects were registered in the cardiovascular outpatient clinic at the Chonnam National University Hospital from June 3. 1996 to Novembel 30. 1977. X2-test or t-test. Repeated measures ANOVA were utilized in the data analysis. The results were as follows: 1.The effect of social support intervention on sick role behavior compliance was significant in 1 month(F=69.17. p=.000). 6 months (F=11.51, p=.001), and 12 months(F=.07, p=.789) and between two groups(1 month: F=153.70. p=.000. 6 months; F=13.94, p=.000, 12 months; F=6.72, p=.011). 2.The effect of social support intervention on blood pressure was not significant through alt the periods of time (F=1.21. p=.274) between the two groups(F= 12. p=.732). In conclusion, it was showed that social support had an effect on sick role behavior compliance and the effect of social support continued for twelve months(F=10.03. p=.002). However, the score of compliance tends to decrease after 6 months of intervention. Therefore, this study indicated that social support re-intervention would be needed between six and twelve months.