서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

일측성 질폐쇄 및 동측 신장 무발생을 동반한 중복자궁 2예

윤일영,여소진,김형문,김정식,김태희,이해혁,남계현,이권해,김준모,김민의 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Uterus didelphys with unilateral obstructed hemivagina and ipsilateral renal agenesis usually presents after menarch with progressive abdominal pain during menses secondary to hematocolpos, and indeed a very rare congenital anomaly due to Mullerian duct malformation. An accurate and prompt diagnosis is of importance to permit treatment and to assure the future fertility of the patient. Pelvic ultrasound, physical examination and pelvic MRI established a diagnosis of hematometracolpos secondary to uterus didelphys with unilateral imperforate hemivagina. An incision in the vaginal septum allowed drainage of the hematocolpos, providing relief of the patients symptoms. We report two case of uterus didelphys with obstructed hemivagina with brief review of the literature.

Cutis Marmorata Telangiectatica Congenita 의 1예

김용대,송준영,이원석,박의수 啓明大學校 醫科大學 1988 계명의대학술지 Vol.7 No.2

Cutis marmorata telangiectatica congenita is a rare congenital vascular anomaly, characterized by congenital cutis maromrata, phlebectasia, opider nevi, ulceration, and in most instances, steady improvement from birth. We report a case of cutis marmorata telangiectatica congenita in 3-month-old boy who has developed localized, dark red reticulated mottling with shiny atrophic scars on the inner side of the left leg. Diagnosis was confirmed by clinical and histopathologic features.

자기 센서를 이용한 자율주행 차량의 경로인식 시스템

김명준,김의선,손석준,오승열,류영재,임영철 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

혈관내피세포-U937세포의 부착에 미치는 Eicosapentaenoic Acid의 효과

김은지,전재은,임현주,차성철,정의룡,조용근,조용근 경북대학교 병원 1998 경북대학교병원의학연구소논문집 Vol.2 No.1

연구배경: 역학적연구에서 어류의 섭취가 많은 집단에서 관상동맥질환의 빈도가 낮은 것이 보고되었고, 이것은 어류에 많이 함유된 불포화지방산(polyunsaturated fatty acid) 특히 eicosapentaenoic acid 때문으로 생각되어지고 있다. 본 연구에서는 동맥경화증 발생의 초기단계로 여겨지는 단핵구와 혈관내피세포 사이의 adhesion에 미치는 다불포화지방산의 영향을 in vitro system에서 관찰하고자 하였다. 방 법: 제대정맥에서 얻은 혈관내피세포를 배양하여 96 well에 옮기고 25, 50, 100, 200 ㎛ 농도의 eicosapentaenoic acid(EPA)를 6시간 동안 처리한 U937세포를 부착시켜 adhesion assay를 시행하였다. 혈관내피세포를 자극하기 위해서는 lipopolysaccharide(LPS)를 well당 100 ng씩을 투여하였다. 음성대조군으로는 LPS로 자극하지 않은 혈관내피세포에 EPA처리를 하지 않은 U937세포로 adhesion assay한 성적을 사용했고, 양성대조군으로는 LPS로 자극한 혈관내피세포에 EPA처리를 하지 않은 U937세포로 adhesion assay한 성적을 사용했다. 그리고 EPA(3.3 mM)을 5㎛ CuSO4 및 300 ㎛ asscorbic acid와 혼합하여 섭씨 37도에서 16시간 두어 산화-EPA를 만들어 같은 실험을 반복하였다. 결 과: U937세포에 25, 50, 100, 200 ㎛의 EPA로 6시간 처리하였을 때 U937세포의 생존율은 99% 이상이었다. 혈관내피세포를 LPS로 자극했을 때 adhesion assay에서 혈관내피세포에 붙는 U937세포의 수는 현저히 증가하였다. 그러나 EPA를 U937세포에 25, 50, 100, 200 ㎛의 농도로 6시간 처리 후에 lipopolysac-charide를 처리한 제대정맥 내피세포에 부착(adhesion)시켰을 때 처리한 EPA의 각 농도에 따른 부착된 U937세포의 수는 통계적으로 유의한 차이를 나타내지 못했다. EPA처리가 부착된 U937세포의 수에 영향을 미치지 못하였다. 결 론: EPA는 U937세포에 영향을 미쳐 혈관내피세포-U937 세포부착을 감소시키지는 못하였다. 따라서 EPA에 의한 혈관내피세포-단핵구 부착 억제 효과는 EPA의 단핵구에 미치는 영향에 의하지는 않는 것으로 생각되나 추후 더 많은 연구가 필요하리라 생각된다. Background : Epidemiological studies have shown correlation between low incidence of coronary heart disease and high consumption of fish products. It has been suggested that this may be due to the high content of polyunsaturated fatty acids of the n-3 fatty acid group in fish oil. In animal studies eicosapentaenoic and (EPA) inhibited attachment of monocytes to the arterial endothlium. Method : Adhesion assay was performed on the endothelial cells of the human umbilical vein with 25, 50, 100, 200 ㎛ EPA-treated U937 cells. The endothelial cells were activated with lipopoysaccharide (LPS). The adhesion assay was repeated with oxidized EPA. EPA was oxidized with CuSO4 and ascorbic acid. Result : Viability of U937 cells were not afected by concentrations up to 200 ㎛ of EPAand oxidized EPA. LPS treatment of endothelium notably increased the number of U937 cells attached to endothelial cells on the adhesion assay. However, treatment of EPA, native or oxidized, to U937 cells did not afect the number of U937 cells attached to LPS activated endothelial cells. Conclusion : EPA treatment, native or oxidized, of U937 cells did not affect U937 cell-endothlial cell adhesion. This suggests that inhibition of monocyte-endothlial cells ◎attachment by EPA is not due to the effects of EPS on monocytes.(Korean Circulatin J 1998;28(4):606-610)

LPE법에 의한 InGaAsP/InP 양자우물 구조 성장

김의훈,오차환,문승준,김채옥 漢陽大學校 自然科學硏究所 1997 自然科學論文集 Vol.16 No.-

InGaAsP /InP 양자우물 구조를 액상 에피탁시법으로 성장하여, 그 구조적 특성을 secondary ion mass spectroscopy(SIMS), scanning emission microscopy(SEM), transmission electron microscopy(TEM)을 이용하여 조사하였다. SIMS 결과로 부터 well과 barrier의 interface에서 P와 As의 성분이 매우 급준한 변화를 보이고 있는 것으로 보아 LPE로 성장된 시료의 계면구조도 비교적 잘 control이 되었다고 판단된다. SEM과 TEM단면 사진으로 부터 well과 barrier의 계면 상태가 양호하고 well size가 270Å이고 barrier size가 1200Å임을 알 수 있었다. InGaAsP /InP quantum well structures have been grown by liquid phase epitaxy(LPE) and its structural properties have been studied by SIMS, SEM and TEM. In SIMS measurement, the P - and As-components were varied abruptly between wells and barriers, which means that interfacial structures of sample grown by LPE were controlled very well. From the analysis of cross sectional images by SEM and TEM, we know that the interfaces between wells and barriers are very abrupt and that the thickness of well layers and barrier layers are 270Å and 1200Å, respectively .

청소년의 무도수련이 개인과 가족가치관에 미치는 영향

김의영,김교준,오세용 龍仁大學校 武道硏究所 2001 武道硏究所誌 Vol.12 No.1

The purpose of this study was to investigate the effects of Martial Arts training on building the juvenile personal value system, nation value system, and colleague value system. For the design of this study, the hypothetical model of study method was used and the questionnaire was distributed around the area of Seoul and Kyunggido. Total of 1,200 subjects answered on the survey asking about the participation on the training of Martial Arts, the kinds of Martial Arts, the period and its duration of training, the frequency of participation, and the companion. The results of this study were as follows: First, the juveniles who participated on the Martial Arts training showed the positive and active attitudes toward their success as well as their birth. Second, the juveniles who participated on the Martial Arts training showed the progressive trend toward the filial piety, traditional ethics, social ethics, and sexual ethics.

분말야금법으로 제조된 2124AI 합금의 빠른변형률속도 초소성 거동

金祐塡,張勝彦,南勝義,金亨駿 弘益大學校 科學基術硏究所 1999 科學技術硏究論文集 Vol.10 No.2

Ceramic whisker or particulate reinforced aluminum based metal matrix composites show high room temperature strength, but their low formability makes it difficult to form into desired shapes. By superplastic deformation, their formability can be improved and it is possible to produce complex parts for automotive aerospace simultaneously instead of many near-net-shape forming operations. This study has been carried out to investigate the high temperature mechanical and superplastic properties in 2124Al alloy. SRC(Strain Rate Change) tests show that the value of n(stress exponent) is around 3 at high strain rate and above 5 at low strain rate. It was turned out that 212Al matrix alloy exhibited reasonably high tensile elongation above 250% with the broad range of temperature and strain rate. Especially, at 550℃, both materials showed very high elongation failure up to 700% for 2124Al alloy. The strength comparison is lower strength then 2124Al composites were obtained that the composite is lower strength than 2124Al alloy at superplastic region.

InGaAsP/InP 양자우물 구조의 물성연구

김채옥,오차환,문승준,김의훈 漢陽大學校 自然科學硏究所 1997 自然科學論文集 Vol.16 No.-

Liquid phase epitaxy(LPE)법에 의해 InGaAsP quantum well(QW)구조를 성장하여 특성을 photoluminescence(PL)와 double crystal rocking curve(DCRC)를 이용하여 조사하였다. PL 측정결과, 상온 PL의 경우 well특성의 피크 에너지는 0.97eV이 FWHM은 80.41meV이며, 저온PL결과 well특성의 피크 에너지는 1.025eV이고 FWHM은 33meV이었다. 여기광의 세기를 증가시킴에 따라 PL 세기가 비교적 선형적으로 급준한 증가를 보이고 있어 well발광 특성임을 관찰할 수 있었다. DCRC결과, 격자부정합도가 0.32이고 한 쌍의 주기는 600Å이며 전형적인 Quantum Well특성의 위성피크를 관찰할 수 있다. In this work, We have grown the InGaAsP/InP quantum well by liquid phase epitaxy(LPE) and its some physical properties have been studied by photoluminescence(PL) and double crystal x-ray rocking curve(DCRC). In low temperature PL, the characteristic emission peak of well is observed at 1.025eV with a full-with-half-maximum of 33meV. As we increase the excitation intensities the emission intensities are drastically increased. From the DCRC analysis, we know that lattice mismatch between epitaxial layer and substrate is very low with a value of 0.32.

B2C 전자상거래 사이트의 구매의도 결정요인에 관한 실증적 연구 : 광산구 광산인터넷마트를 중심으로

전의천,김석민 조선대학교 지역사회발전연구원 2003 地域發展硏究 Vol.8 No.1

This study focused on the trust in the gwang-san district office's internet shopping mall(http://www.gwangsanmart.com). And so, this paper analyzed the relations between the influence factors and the buying behavior which influence on the trust. This study set up the casual model and hypothesis based on the preceding research and the research findings through a controlled simulation involving 128 college students. Collected materials were analyzed by SPSS Win program and the model were shown as correct and the following major results were revealed. 1) the factors which significant influenced on the trust was perceived scale. But perceived quality did not significance influence on the trust. 2) trust, consumer attitude and perceived risks all significant influenced the buying behavior. Findings of this study suggest a realistic as well as substantial approach to understanding the driving force behind trust in internet shopping mall by identifying the antecedents and consequences of trust. Also the study findings can provides the internet marketers with the theoretical as well as practitional foundation upon which to establish effective marketing strategy.