난소 및 난소 종양 염전의 초음파 소견

오연희,이현경,이원재,이성우,박수성,윤혜원,임문환,심재철,김용탁,김성숙,김정란 동국대학교 경주대학 1993 東國論集 Vol.12 No.-

Acute torsion of the ovary and ovarian mass is a recognized surgical emergency, but rarely has the diagnosis been made preoperatively on the basis of imaging studies. The sonographic findings in 14 cases of surgically proven torsion of the ovary and ovarian mass are described. Mostly cystic ovarian mass, engorged vessel, dilated uterine tube, beak-like echo(torsion site), smooth mass wall thickening an free-fluid collection in cul-de-sac are described. More significant in terms of specificity were the demonstration in 6 cases(42.9%) of the smooth mass wall thickening and in 8 cases(57.1%) of a free fluid in the cul-de-sac. We report the sonographic findings of ovary and ovarian mass torsion that may suggest the preoperative diagnosis of this condition.

인터넷 쇼핑몰 서비스품질이 고객만족도와 행동의도에 미치는 영향 : 대학생을 중심으로 Focusing on the University Student

방환복,오세용,김창은 한국인터넷비즈니스학회 2003 인터넷비지니스연구 Vol.4 No.2

최근 전자상거래의 급격한 발달과 함께 인터넷이란 가상공간을 통하여 각종 서비스 및 상품을 판매하는 인터넷쇼핑몰이 등장하면서 고객은 자신이 원하는 시간에 다양한 서비스와 상품을 구입할 수 있게 되었고, 기업은 인적, 물리적 공간 자원의 감축으로 효율적 경영, 무한한 제품 전시공간, 전세계로 소비자 확대용이, 중간물류 및 유통단계 생략, 효율적 마케팅, 고객의 소비성향 파악이 보다 쉽게 되는 등의 장점은 오프라인의 한계를 극복하게 해주었다. 하지만 급격한 발달로 인해 인터넷 쇼핑몰의 이론적 장점과 이로 인한 외형적 성장과 달리 몇몇 업체를 제외하고 그리 발전적이지 구조를 지니지 못하고 있다. 이에 대한 원인은 여러 가지가 있겠지만, 인터넷 쇼핑몰의 직접적인 대상인 소비자 분석과 소비자가 판단하는 기업에 대한 서비스 품질, 고객만족 등을 정확하게 파악하지 못하는 것에도 원인이 있다고 본다. 따라서 본 연구는 선행연구와는 다르게 인터넷 쇼핑몰 이용도가 높은 20대, 대학생들만을 대상으로 자신이 주로 이용하는 인터넷 쇼핑몰의 고객만족, 서비스품질, 행동의도 등을 조사하고 서비스품질이 고객만족에, 고객만족이 행동의도에 어떻게 영향을 미치는지를 분석한 결과 서비스품질 하위 요인인 유형성, 신뢰성, 공감성은 고객만족에 영향을 미치고 있었으며, 고객만족은 구매행동(재구매 의도, 구전 의도)에 영향을 미치는 것으로 나타났다. 따라서 본 연구는 인터넷쇼핑몰 운영의 혁신적인 마케팅 기법을 창출하고 소비자의 만족도 제고를 위한 각종 교육 및 정책프로그램을 마련하는 이론적 자료를 제시하고자 하였다. With the rapid development of e-commerce and application of cyber space, many kinds of services and goods start to be supplied in internet. The consumer can get the services and goods he wants at any time. At the same time, the efficiency of management is higher by deduction of manpower, space resources, and infinite exhibition stage attracts the people all over the world, also supply chain is shorter, circulation stage is dismissed, the deduction of buying tendency is easier to find andoffline limitation is overcame. However, for most companies the rapid development leads to the internal development of structure can not support the external expansion except few corporations. There are so many reasons about it, but without doing consumer analysis, service quality, and consumer satisfaction which consumer used to evaluate the producer is the reason included. Different from previous study, this paper focuses on the research of university student in their twenties about their internet shopping consumer satisfaction, service quality, performance intention etc., analyzes the effect of service quality and consumer satisfaction performance intention by doing analysis of quality factor about reliability, empathy, satisfactory purchase performance(latent-purchase intention, before-purchase intention). This study develops innovative marketing method to help you manage of internet shopping and some kinds of education and policy training program supplied to help improve customer satisfactory standards.

유한요소법에 의한 헬리컬기어의 맞물림 강도특성에 관한 연구

박성환,유용석,김병석,최명진,오택열 慶熙大學校 大學院 1993 高凰論集 Vol.12 No.-

In this study, the mesh stiffness characteristics of helical gears are evaluated by applying the finite element method. The bending and shear deflections on the contact line are obtained by the finite element method, and the contact deflections are obtained using the equation of Weber and Banaschek. Finally, using the influence method, contact ratio and load sharing ratio, the mesh stiffness characteristics of helical gears are evaluated. The results obtained could be summarized as follows: 1) By increasing the facewidth and helix angle of helical gears, a more constant mesh stiffness and transmission errors are obtained. 2) m_p+m_f〈2.0 The characteristics of this class helical gear pair are similar to that of spur gear. 3) m_p+ 1.0m_f≥2.0 This class helical gear pair gives a good performance as expected from helical gears.

응급실을 통한 정신과 입원환자에 대한 임상적 고찰

소용섭,정영조,오석환 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.2

Hospital records of 127 neuropsychiatric patients admitted to Seoul Paik Hospital via the E.R. from January 1, 1984 to December 31, 1986 were reviewed, and the following results were obtained. 1) Patients admitted via the E.R. comprised 22.8% of total neuropsychiatric admissions. 2) The readmission rate of patients via E.R. was 36.2%, that of the patients admitted via the O.P.D. was 22.7% 3) The average duration of hospitalization of neuropsychiatric pateints admitted via the E.R. was 36 days that of the patients admitted via the O.P.D. was 48.3 days. 4) 32.3% of the E.R. admission patients were in their twenties ; 55.9% of them were in their twenties or thirties. Male for female ratio was 1.15 : 1 5) 22.8% of the E.R. patients were diagnosed as schizophrenic disorder ; which was the most frequent diagnosis in all patients. 6) 34.6% of the E.R. patients were discharged within 2 weeks, and 60.6%, within 1 month. 7) Presenting problems, in the order of frequency, were paralysis of numbness of extremities, somatic sysmptoms, hallucination of paranoid delusion, and anxiety or panic state. More than half of the patients presented one or more of these symptoms. 8) 36.2% of the E.R. patients were discharged against medical advice. This was higher than A.M.A. discharge rate of 26.7% of the patients admitted via the O.P.D.

다발성 골수종으로 이행한 단일형질세포종 1예

정재용,모성환,기장도,문철호,김창욱,전용준,박유환,정춘해,오윤경 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

사람폐암세포주 (PC-14)에서 Cyclosporin A에 의한 Adriamycin 내성의 극복

김영환,홍원선,송재관,강윤구,이진오,강태웅,김건열,한용철 대한내과학회 1990 대한내과학회지 Vol.38 No.3

Cyclosporin A and verapamil were tested using MTT assay to evalute the modification effect on the resistance to adriamycin in a human lung cancer cell line(PC-14) and its resistant subline(PC-14/A). PC-14/A was derived by the continuous exposure of PC-14 to incremental concentrations of adriamycin. PC-14/A was 2.5 times more resistant to adriamycin in terms of ICso than PC-14. Cyclosporin A alone, at a concentration of 2.5㎍/㎖, inhibited the growth of PC-14 to 68.3%. 2.5㎍/ ㎖ and 5.0㎍/㎖ of cyclosporin A showed an increase in the cytotoxicity of adriamycin (p<0.01) with 5.0㎍/㎖ being greater than 2.5㎍/㎖(p<0.01). Excluding the direct cytotoxic effect, however, cyclosporin A did not increase in the sensitivity of PC-14 to adriamycin but only showed an additional cytotoxic effect with adriamycin. Verapamil (up to 6.0㎍/㎖) did not inhibit the growth of PC-14. 3.0㎍/㎖ of verapamil did not increase the cytotoxic effect of adriamycin. The combination of cyclosporin A and verapamil with adriamycin enhanced the cytotoxicity of adriamycin, but the result was similar to that of cyclosporin A with adriamycin. 5.0㎍/㎖ of cyclosporin A modified the adriamycin resistance of PC-14/A(SR, 3.2). However, 3.0㎍/㎖ of verapamil did not significantly reverse the adriamycin resistance of PC-14/A. The modified effect of the combination of 5.0㎍/㎖ of cyclosporin A and 3.0㎍/㎖ of verapamil was similar to that of 5.0㎍/㎖ of cyclosporin A alone in PC-14/A. These results demonstrate that cyclosporin A has an additional cytotoxic effect with adriamycin in PC-14 and PC-14/A and has overcome the acquired resistance to adriamycin in PC-14/A. They also suggest that cyclospoin A may have the therapeutic potential in the treatment of human lung cancer.

니트섬유강화 복합재료의 기계적 성질에 관한 연구

한길영,이동기,최병기,오환교,신용욱,전수영 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2

Using conventional textile techniques such as weaving, braiding, knitting and stitching it is possible to produce a wide range two and three dimensional fiber preforms. However, so far only a limited attention has been given to knitted fabrics in composite industry. This is mainly due to the opinion that knitted fabric reinforced composites posses low mechanical properties owing to their looped fiber architecture. But it is possible to obtain desired mechanical properties by selecting proper knitted fabric structure. In this paper, tensile failure load and displacement of one yarn, four yarns and knitted fabrics of ten yarns of kevlar fiber were determined experimentally in the unidirection. Mechanical properties of plain weft knitted fabrics reinforced composite intrusion beam for car side door application were investigated experimentally, which compared with desire value of American Fedral Motor vehicles Safety Standard (FMVSS) and presented the results.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive 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 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

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.

위장질환에 따른 H.pylori 감염빈도와 검사방법의 비교분석

김대현,조재현,금민수,최성곤,이창형,탁원형,권영오,김성국,최용환,정준모 慶北大學校 醫科大學 1997 慶北醫大誌 Vol.38 No.2

목적 : H. pylori가 위장관 질환의 병인에 깊은 관련이 있어 이의 적절한 진단 및 치료가 중요하게 대두되고 있다. 이에 저자들은 소화기 증상을 주소로 내원한 환자들을 대상으로 내시경 검사를 실시하여 H. pylori검출을 위한 CLO검사, IgG 항체검사 및 H&E 염색 등을 시행하여 각 질환별로 H. pylori 감염의 양성율을 알아보고 검사법에 따른 민감도 및 특이도를 그 유용성에 대하여 조사하였다. 대상 및 방법 : 1996 4월에서 8월까지 경북대학교병원에 소화기증상을 주소로 내원한 총 313명의 환자를 대상으로 내시경 검사를 실시하여 H. pylori 검출을 위한 CLO 검사, IgG 항체검사, 조직염색 검사를 실시하였다. 결과 : 전체 대상 환자수는 313명이었고 연령별 분포는 16세부터 80세 까지 다양하였으며 그중40대, 50대, 60대가 각각 69예(22%), 73예(23.3%), 65예(20.8%)로 전체 환자중 66%를 차지하였다. 남녀비는 2.07 대 1로 남자가 많았다. 대상환자의 평균나이는 52±15세였고, 전체 대상환자에서 H. pylori 양성군과 음성군의 평균나이는 각각 50±15세, 54±15세 였고, 궤양환자군에서 H. pylori 양성군과 음성군사이의 평균나이는 각각 49±14.8세, 55±13.8세로 나타났다. 각 질환별분포는 위염이 72명(23%), 십이지장 궤양이 85명(27.2%), 위궤양이 80명(25.6%), 위암이 20명(6.4%), 비궤양성 소화불량이 13명(4.2%), 기타가 43명(13.7%)이었으며, H. pylori 감염 양성율은 위염이 71%, 십이지장 궤양이 86.8%, 위궤양이 58.3%, 위암이 75%, 비궤양성 소화불량이 75%였으며 특히 유문륜 궤양에서는 100%의 양성율을 보였다. 소화성 궤양군과 비궤양군에서의 H. pylori 양성율을 비교해 본 결과 궤양군에서는 73.1%, 비궤양군에서는 72%로 통계학적으로 차이는 없었다(P=0.91). 소화성 궤양환자에서 출혈이 동반된 군과 동반되지 않은 군에서의 H. pylori 양성율을 비교해 본 결과 출혈이 동반된 군에서의 양성율은 54.5%였고, 출혈이 동반되지 않은 군에서는 77.5%의 양성율을 보여 출혈이동반되지 않은 군에서 통계학적으로 유의하게 높았다(P=0.014). 나이에 따른 양성율을 알아본 결과 50세 이하에서는 78.5%였고, 50세 이상에서는 67.5%로서 양성율이 낮았으나 통계학적으로 유의성은 없었다(P=0.052). 각 검사법에 따른 민감도 및 특이도는 전체 환자중에서는 CLO검사가 88.9%, 96.1%, IgG항체검사 90.8%, 58.5%, H&E 염색검사 86.9%, 79.2%로서 민감도는 비슷하게 나왔으나 CLO검사는 상대적으로 특이도가 다른 검사법에 비해 높았다. 궤양군에서의 CLO검사의 민감도와 특이도는 92.0%, 95.6%였고, 비궤양군에서의 민감도와 특이도는 84.3%, 96.8%로서 비궤양군에서는 CLO검사의 민감도는 약간 낮았다. 나이에 따른 CLO 검사의 민감도 및 특이도는 50세 이하에서는 91.5%, 93.1% 였고, 50세 이상에서는 86.3%, 97.9%로서 50세 이상에서는 상대적으로 CLO검사의 민감도가 낮았다. 결론 : 본 연구에서는 위장질환에 따른 H. pylori 양성율을 알아보았는데, 다른 보고에서 처럼 높게 나왔으며, 진단 방법으로 사용한 CLO검사, IgG항체 검사, 조직염색검사 등은 모두 비교적 높은 예민도를 나타냈고, 그중 CLO검사가 간편하고 경제적이라는 면에서 임상적으로 유용한 검사로 여겨지나 상대적으로 CLO검사의 민감도가 낮은 비궤양성 질환과 50세 이상의 환자군에서는 CLO검사 외에 다른 검사방법을 병행함으로써 H. pylori의 진단율을 높일 수 있을 것으로 사료된다. Background: Gastric colonization by Helicobacter. pylori is common among patients with peptic ulcer and gastritis. And various diagnostic tests are available in confirming H. pylori infection. The aim of this paper is to estimate the prevalence of H. pylori infection in Gastroduodenal disorders and compare the sensitivity and specificity of the most widely available tests. Methods: A total of 313 patients were tested for H. pylori infection by IgG Ab, CLO test and H&E stains. Results: The prevalence of H. pylori infection was significantly higher in duodenal ulcer(86.8%) than in gastric cancer(75%), gastritis(71%) and gastric ulcer(58.3%)(P=0.009). The sensitivity and specificity of each test was as follows: CLO test(88.9%, 96.1%), IgG Ab test(90.8%, 58.5%), H&E stain(86.9%, 79.2%). Sensitivity of CLO test in peptic group was 92.0%, whereas in non-peptic group, it was 86.3%. Sensitivity of CLO test in age under 50 was 91.5%, that over 50 it was 86.3%. Conculsions: There is a strong association between H. pylori and gastrointestinal disorders. CLO tests have relatively high sensitivity and specificity, especially in peptic group and younger age(below 50 yr)group. But in those patients in which CLO tests are less sensitive (age>50 or non-peptic group), more than one test may be necessary to diagnose the presence of the organism.