임상 가검물에서 분리된 균(대장균과 황색 포도균)의 약제 내성

김중명,김재식,김경선,김재룡,전동석,최성만,서상철,김인자,김재숭,이건일,김경숙 慶北大學校 醫科大學 1982 慶北醫大誌 Vol.23 No.2

1981년 1월에서 12월말까지 임상 제료에서 분리한 Escherichia coli (E. coli)와 Staphylococcus aureus (S. aureus) 중에서 무작위로 각 50주 씩 선택하여 원판 확산법과 평판 희섭법으로 그 내성주를 조사하여 다음과 같은 성적을 얻었다. 전체적으로 볼 때에 Teteracyclin (TET), Chloramphenicol (CM) 및 Ampicillin (AMP)에 대한 내성주가 가장 많았고, Amikacin (AMK)에 대한 내성주는 가장 적어다. 이것을 균종별로 보면 E. coli에 있어서는 TET, AMP 및 CM는 원판 확산법으로서 74∼76%, 평판 희석법으로서는 78∼94%가 내성주임을 나타내었고, 또 Cephalothin(CEP)은 원판 확산법에서는 8%가 내성주로 나타났으나, 평판 의석법에서는 52%가 내성주로 나타났다. S. aureus에 있어서는 TET는 원판 확산법으로 82%, 평판 희석법으로서는 78%가 내성주로 나왔고 Penicillin (P)은 원판 확산법에서는 56% 평판 희석법으로는 22%의 내성주가 나왔으며, GM과 CM은 원판확산법에서는 18∼44%, 평판 희석법에서는 56∼58%가 내성주로 나왔다. Each 50 strains of Escherichia coli and Staphylococcus aureus were selected at random out of the stock cultures which were isolated from the clinical materials in the bacteriological laboratory of the department of clinical pathology. Kyungpook National University Hospital from the first of January to the end of December in 1982, and their resistance against eight antibiotics were as follows; Escherichia coli and Staphylococcus aureus had the most resistant pattern against tetracyclin, chloramphenicol, and ampicillin, while they had the most sensitive pattern against amikacin in general. Escherichia coli revealed resistant pattern to tetracyclin, ampicillin, and chloramphenicol 74-76% by the disk diffusion method and 78-94% by the plate dilution method, and revealed resistant pattern to cephalothin 8% by the disk diffusion and 52% by the plate dilution. Staphylococcs aureus disclosed resistant pattern to tetracyclin 82% by the disk diffusion and 78% by the plate dilution, and disclosed resistant pattern to penicillin 56% by the disk diffusion and 22% by the plate dilution, and to gentamicin and-chloramphenicol 18-44% by the disk diffusion and 56-58% by the plate dilution.

Housing Investrnent in A Developing Country

Je-H∞n Lee 한국지역개발학회 2002 韓國地域開發學會誌 Vol.14 No.3

The main contribution by this paper is the addition of macroeconomics and political context to empirical analysis and interpretation of housing investment in Korea. First, 1 present a theoretical discussion to explain how investment in housing is determin, then a model of housing investment using time-series analysis. Regression models using time-series data from Korea covering the period of 1953-1993 are estimated to establish the empirical relationships. Results show that housin investment in Korea is statistically explained by levels of income, military spending, election, housing picy, foreign aÍÍ;rs, and global context of finance. These results are made more meaningful by adng intemationa1, domestic, and institutional variables to the context in which housing policy was formulated. The analysis also shows a statistically significant relationship between historical pattems of investment in housing sector and the structure of Koreas tota1 investment.

기판내 홀의 전기도금 전류분포에 관한 이론적 연구

朱宰佰 弘益大學校 科學技術硏究所 2005 科學技術硏究論文集 Vol.16 No.-

A theoretical model was developed for the calculation of current distribution problems. The problem in this study is the electroplating through a hole in circuit board. We assumed that the flow pattern was tubular laminar flow through a hole. With use of commercial partial differential equation solver, The model equations was solved successfully. The results of secondary and tertiary current distribution problems showed that the value of applied potential or current was important to determine the uniformity of current distribution rather than the direction of fluid flow.

10Å Manganite와 δ-MnO_(2)의 부유성에 관한 연구

엄제현,김익수,성일용,김종윤,김진석 三陟大學校 2006 論文集 Vol.39 No.-

For the purpose of researching the floatability of 10Å Manganite and δ-MnO_(2) from Manganese layer, the test was performed by means of the Zeta potential measuring and the floatation experiment for 10Å Manganite, δ-MnOcc. The floatation condition in the floatation experiment were as follow. Sample : δ-MnO_(2), 10Å Manganite from Manganese layer Sample size : 65mesh ~ 200mesh. condition time : 10min. Flotation time : 4 min. Air amount : 20ml/min. Promoter : DACl, NaDS, Kerosene Dpresser : Na_(2)SiO_(2)(Water glass) PH regulator : HCl, CaO From the above test the floatation result were summerized as follow. 1) It was PH 2.3 that the PZC of the 10Å Manganite - rich from Manganese nodule in the ξ - potential measuring. 2) It was PH 3.0 that the PZC of the δ-MnO_(2)- rich from Mangnaese nodule in the ξ - potential measuring. 3) It was 35% using DACl 15mg/l at PH 2.7 that the most difference of floatability of the δ-MnO_(2)- rich and 10Å Manganite - rich.

한국에서의 `브레히트 연구` 양상

차제순 독일언어문학연구회 2001 독일언어문학 Vol.16 No.-

유체가 흐르는 원통형 관내의 최적 전기도금을 위한 전류분포의 예측

朱宰伯,鄭在益 弘益大學校 科學技術硏究所 1996 科學技術硏究論文集 Vol.7 No.1

The methmatical model of the tertiary current distribution for the optimum conditions of electroplating inside a cylindrical tube with fluid flows, was stuied. With the assumption of fully developed flow, in the diffusion layer region the steady state equation of laminar convective diffusion was used, in the bulk region the Laplace's equation in cylindrical coordinates was used. The optimum condition of electroplating considered parameters that decide current distribution, was predicted.

코발트 회전전극을 이용한 부식 반응 기구 및 산소의 영향에 관한 고찰

朱宰伯 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.5 No.-

Electrochemical dissolution behavior of cobalt in sulfate solutions was investigated. Tafel kinetic behavior of cobalt dissolution and hydrogen reduction were measured in acid and alkaline solutions containing sulfate ions at several pH values. Rotating disc electrode was used in order to eliminate the mass transport limitations at the electrode surface. The increase of pH resulted the shift of corrosion potential and the decrease of corrosion current. Also the kinetic mechanism of cobalt dissolution in acid solution was examined. The effect of dissolved oxygen in acidic solution on the corrosion and electrodissolution of cobalt and the oxygen reduction on cobalt were studied with rotating disc electrode. The increase of dissolved oxygen concentration enhanced the corrosion current. The number of electrons consumed in the oxygen reduction process was determined as about 2 in hydrochloric acid and about 4 in sulfuric acid. This indicates that the primary product is hydrogen peroxide in chloride solution and water in sulfate solution in the process of oxygen reduction.

노화와 자기수용감각

류제광,김선진 서울대학교 스포츠과학연구소 2009 스포츠과학리뷰 Vol.3 No.1

As the number of individuals over the age of 60 years continues to rise, determining age-related declines in sensorimotor performance is of increasing importance. This review examines the specific contribution of proprioceptive feedback to sensorimotor performance in older adults. First, a global perspective of proprioceptive acuity is provided on proprioceptive function (e.g. sense of position, motion or dynamic position), and frequently-used-assessment-tool was quantified. Second, the consequences of proprioceptive deficits are established with particular emphasis placed on postural control. Lastly, the potential for plastic changes in the aging proprioceptive system is highlighted, including studies which relate physical activity to enhanced proprioceptive abilities in older adults. 60세 이상 인구의 지속적인 증가로 인해, 노화와 관련된 감각-운동 수행의 변화에 관한 관심이 확대되고 있다. 본 논문에서는 자기수용감각을 중심으로 노화에 따른 감각-운동 수행의 변화에 관하여 살펴보았다. 우선 선행연구에서 제시하고 있는 결과들을 중심으로 노화에 따른 자기수용감각 정밀성의 저하현상을 위치 감각, 운동 감각, 동적위치 감각으로 구분하여 살펴보았으며, 대표적으로 사용되고 있는 연구방법을 살펴보았다. 다음으로 이러한 자기수용감각의 저하현상이 노인의 운동수행에 미치는 영향을 살펴보았으며, 이러한 변화가 나타나게 되는 신경생리적 메카니즘을 고찰하였다. 마지막으로 신체활동 참여를 통해 노인의 자기수용감각 능력을 유지 또는 향상시킬 수 있는 가능성을 탐색하였다.

우리 나라의 合理的 地方財政調整制度에 관한 연구

金濟安 조선대학교 경영경제연구소 1999 經營經濟硏究 = Management and economics research Vol.22 No.2

졸겔법에 의해 제조된 결정질 LiMn₂O₄의 전기화학적 반응 특성연구

朱宰伯,曺星美 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

Lithium secondary batteries is expected to be highlighted as the future mobile electric power source since it is more outstanding in energy density and many other properties compared with the existing secondary batteries. Among the cathode materials of lithium secondary battery, LiMn₂O₄ consists of spinel structure and shows the highest level of operative voltage. The citric acid method, one of the moisture present methods, is easy to control the composition rate and gets less amount of inflow impurities and even the grain size is adjustable in microscopic level so that possibly obtains the sample powder with large surface area and evenly distributed grains, subsequently a lot of research proceeded so far. The initial discharge capacity was 110Ah/g which is corresponding to 74.2% of the theoretical capacity of LiMn₂O₄, 148.21mAh/g. After 20 cycle, it showed 92mAh/g and after 30 cycle, it became 75mAh/g that is a large capacity fading of 31.8%.