胸腹部癒合重複畸型兒의 1例

李起煥,柳友國,權善鎬,盧興泰 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.1

Conjoined twins are known to be very rare. A case of thoracoventropagus, aborted on the 20^th weeks gestation, is reported with brief review of the related literatures

철근 콘크리트 연속 유공 깊은 보의 전단내력에 관한 해석적 연구

박우진,이종권,이리형 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

The purpose of this report is investigation of shear behaviors of the deep beam through non-lineal Finite Element Method based on experimental results of continuous deep with opening. Optimum condition for analysis was selected by means of adopting various material property as variables, and additional models including different position of opening selected as variables was simulated. Also experimental result was calibrated by two formula suggested by AIJ and CIRIA, considering effect of opening in the continuous deep beams. As a result of calibration, it is possibly estimated that shear strength formula suggested by AIJ(the Architectural Institute of Japan) can be also adopted as formula for continuous beam. It is expected that results of this research which evaluated shear behavior of the continuous deep beam through non-lineal Finite Element Method can be applied data for reinforcement in the vicinity of opening in the continuous deep beams.

卵巢未分化胚細胞腫 1例

柳友國,李起煥,權善鎬,盧興泰 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.1

Ovarian Dysgerminoma is a tumor purely of germ cells without any attempt to form teratomatous elements and is believed to arise from the primordial germ cells of the indifferent stage of gonadogenesis. We have had a Dysgerminoma of right ovary in 28 years old multigravida and report the case with review of literatures briefly.

달맞이꽃(Oenothera odorata Jacquin) 뿌리에서 추출한 항균성분의 특성

신성진,권순경,이권행,성낙도,최우영 충남대학교 농업과학연구소 1994 농업과학연구 Vol.21 No.1

An antibacterial component was isolated from the roots of evening primrose (Oenothera odorata Jacquin). The component was purified by repeated preparative TLC of the chloroform-extract with solvent system of toluene(7): ethyl acetate(4) : formic acid(O.8). NMR spectrum indicated that it is a steroid compound containing radical(-C=C-C=0) and aromatic structures. Its antibacterial activity against strains of the genus Streptococcus was relatively high, the MIC value was 50 according to the Hoechst Manual-345, as compared with the other genera such as Staphylococcus and Escherichia.

부고환염의 초음파 소견 : 결핵성과 비결핵성의 감별진단

이현경,이성우,김순,오연희,이원재,이경섭,강승완,권삼 東國大學校醫學硏究所 1994 東國醫學 Vol.2 No.-

초음파 검사상 부고환의 팽대와 균질성 저에코를 볼 수 있는 부고환염의 진단은 용이하지만 결핵성 고환염 및 부고 환염의 초음파상 진단은 어려움이 따른다. 그렇지만 결핵성 부고환염과 비결핵성 부고환염의 감별진단은 고환의 기능 유지 및 치료 방침에 있어서 중요하다. 저자들은 초음파 검사 및 핵의학검사 소견으로 부고환염을 진단하였고 임상소견 및 병리소견상 결핵성 5례, 비결핵성 18례로 확진한 23례의 부고환염 환자를 대상으로 하였으며, 후향적으로 초음파 소견을 비교 분석하여 결핵성과 비결핵성 부고환염을 감별 진단하고자 하였다. 결핵성 부고환염의 초음파소견은 첫째, 비균질성 제에코 소견이 5례중 4례를 나타내었고 둘째, 부위는 꼬리부분이 5례 중 4례를 차지하였다. 셋째, 합병증은 음낭 수종, 격막성 음낭 수종, 국소적인 석회화 등을 볼 수 있었다. 반면에 비결핵성 부고환염은 첫째, 균질성이 저에코가 15례, 고에코성이 3례의 소견을 볼 수 있었고 둘째, 부위는 모체부위가 14례로 가장 많이 차지하였다. 셋째, 합병증은 음낭수종, 격막성 음낭수종, tunica albuginia의 막비후등 다양하였다. 결론적으로 부호관의 꼬리 부분에서 병변을 많이 볼 수 있으며, 비균질성 제에코의 소견과 국소적인 석회화등이 보이는 경우는 결핵성 부고환염을 생각하고 폐결핵 혹은 복부결핵, 신장결핵의 과거력과 고름이 계속 형성되며 외부와 누를 형성하는 등 임상소견과 병행하면 진단이 가능할 것으로 사료된다. Although sonographic findings of epididymitis have been generally described as enlargement of the epididymitis with decreased echogenecity, sonographic characteristics of tuberculosis epididymitis and tuberculosis epididymo-orchitis have been reported in only a few cases. Differentiation of tuberculosis epididymitis from non-tuberculosis epididymitis is important with regard to the management of patient. We have 23 cases of the epididymitis on sonography and scrotal scintigraphy. Based on clinical, laboratory and pathologic findings, 5 cases are tuberculosis epididymitis and 18 cases are non-tuberculosis epididymitis. We compared analysis of tuberculosis epididymitis with non-tuberculosis epididymitis in sonographic findings retrospectively. As a results, in 5 cases tuberculosis epididymitis, conographic findings are inhomogeneous hypoechogenecity of 4 cases and tail predominance of 4 cases. In 18 cases non-tuberculosis epididymitis, there are homogeneous hypoechogenecity of 15 cases and hyperechogenecity of 3 cases and body predominance of 14 cases. The complications show variable such as hydrocele, septated hydrocele, thickened trnica albuginia and also noted calcification of 1 tuberculosis case. In conclusion, if sonography shows inhomogeneous hypoechogenecity and tail predominance and also noted calcification, with clinical findings as pus and sinus formation and history of systemic tuberculosis, it is possible to differentiate tuberculosis epididymitis from non-tuberculosis epididymitis.

영남대학교 의과대학 부속병원에서의 이차성 고혈압의 유병율

이형우,이현우,윤경우,권준영,심봉섭,김영조,신동구,최교원 영남대학교 의과대학 1994 Yeungnam University Journal of Medicine Vol.11 No.1

이차성 고혈압은 일차성 고혈압에 비해 빈도가 매우 적지만 그 원인 인자를 교정했을때 정상 혈압으로 완치가 되거나 증상의 완화를 보일 수 있기 때문에 이차성 고혈압을 시사하는 소견들이 있을 때에는 원인을 조사하여 그에 맞는 적절한 치료를 하는 것이 매우 중요하다. We studied the incidence and results of treatment of secondary hypertension in Yeungnam University Hospital. Nineteen hundred fifty patients with hypertension were included from march 1990 to march 1994. We analysed the prevalence of secondary hypertension and results of treatment. The incidence of secondary hypertension in Yeungnam University Hospital was six percent. The most common underlying causes of secondary hypertension was renal parenchymal disease. Patients with three forms of potentially reversible secondary hypertension, namely, renovascular hypertension, endocrine disease, exogenous hormone, were assed to determine whether surgery or withdrawal of the exogenous hormane had led to an improvement in blood pressure control. The incidence of secondary hypertension in Yeungnam University Hospital was low(6%), but some of these are curable. Thus it is very inportant that evaluate the secondary hypertension.

In vivo effects of panax ginseng extracts on the cytochrome p450-dependent monooxygenase system in the liver of 2,3,7,8-tetrachlorodibenzo-p-dioxin-exposed guinea pig

Lee,Hyung Chul,Hwang,Sang Gu,Lee,Young Gu,Sohn,Hyung Ok,Lee,Dong Wook,Kwak,Yi Swong,Wee,Jae Joon,Joo,Woo Hong,Cho,Yong Kweon,Moon,Ja Young 한국생명과학회 2001 한국생명과학회 학술발표회 Vol.33 No.-

The effects of the subchronic administration of panax ginseng extracts were examined on the hepatic cytochrome P450-dependent monooxygenase system of guinea pigs preexposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Panax ginseng extracts were intraperitoneally administered to guinea pigs at 100 ㎎/㎏/day for 14 days from 1 week after a single intraperitoneal injection of 1μg of TCDD/㎏ of body weight. TCDD treatment increased the total cytochrome P450 content 2.86-fold, and this was remarkably inhibited by the administration of panax ginseng extracts. Treatment with ginseng extract alone also decreased the contents of cytochrome P450 by 33%, but both TCDD and ginseng extracts had no effect on cytochrome b5 content. The administration of TCDD resulted in a 1.73-fold increase in microsomal NADPH-cytochrome P450 reductase activity in the guinea pig liver, and this was significantly inhibited by ginseng extracts, but treatment with ginseng extracts alone had no effect on its activity, and no statistical changes in the activity of NADPH-cytochrome b_5 reductase were observed in guinea pig liver due to TODD and/or ginseng extract administration. Compared to the control, ECOD activity remarkably (1.76-fold) increased after TCDD administration, but this increase was completely inhibited by treatment with ginseng extract. Treatment with ginseng extract alone resulted in a 50% reduction of ECOD activity. TCDD administration remarkably induced benzphetamine demethylation (BPDM) activity, while ginseng extract also slightly increased the enzymes activity, but the induction attributed to ginseng extracts was not statistically significant. Even though administration of ginseng extracts slightly inhibited TCDD-induced BPDM activity, the inhibition was not statistically significant. These results indicate that ginseng extract exerts different effect on the induction of P450 isozymes. From these results, we suggest that panax ginseng extracts may act as an inhibitor of CYP1A rather than that of CYP2B.

In vivo effects of Panax ginseng extracts on the cytochtome P450-dependent monooxygenase system in the liver of 2,3,7,8-tetrachlorodibenzo-P-dioxin-exposed guinea pig

Lee, Hyung-Chul,Hwang, Sang-Gu,Lee, Young-Gu,Sohn, Hyung-Ok,Lee, Dong-Wook,Hwang, Seok-Youn,Kwak, Yi-Swong,Wee, Jae-Joon,Joo, Woo-Hong,Cho, Yong-Kweon,Moon, Ja-Young Institute of Genetic Engineering Changwon National 2002 Gene and Protein Vol.6 No.-

The effects of the subchronic administration of Panax ginseng extracts were examined on the hepatic cytochrome P450-dependent monooxygenase system of guinea pigs pre-exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Panax ginseng extracts were intraperitioneally administered to guinea pigs at 100 ㎎/㎏/day for 14 days from 1 week after a single intraperitoneal injection of 1 ㎍ of TCDD/㎏ of body weight. TCDD treatment increased the total cytochrome P450 content 2.86-fold, and this was remarkably inhibited by the administration of Panax ginseng extracts. Treatment with ginseng extract alone also decreased the contents of cytochrome P450 by 33%, but both TCDD and ginseng extracts had no effect on cytochrome b_5 content. The administration of TCDD resulted in a 1.73-fold increase in microsomal NADPH-cytochrome P450 reductase activity in the guinea pig liver, and this was significantly inhibited by ginseng extracts, but treatment with ginseng extracts alone had no effect on its activity, and no statistical changes in the activity of NADPH-cytochrome b_5 reductase were observed in guinea pig liver due to TCDD and/or ginseng extract administration. Compared to the control, ECOD activity remarkably (1.76-fold) increased after TCDD administration, but this increase was completely inhibited by treatment with ginseng extract. Treatment with ginseng extract alone resulted in a 50% reduction of ECOD activity. TCDD administration remarkably induced benzphetamine demethylation (BPDM) activity, while ginseng extract also slightly increased the enzyme's activity, but the induction attributed to ginseng extracts was not statistically significant. Even though administration of ginseng extracts slightly inhibited TCDD-induced BPDM activity, the inhibition was not statistically significant. These results indicate that ginseng extract exerts different effect on the induction of P450 isozymes. From these results, we suggest that panax ginseng extracts may act as an inhibitor of CYPIA rather than that of CYP2B. ⓒ 2002 Elsevier Science Inc. All right reserved.

Impact of coronary lumen reconstruction on the estimation of endothelial shear stress: in vivo comparison of three-dimensional quantitative coronary angiography and three-dimensional fusion combining optical coherent tomography

Kweon, Jihoon,Kang, Soo-Jin,Kim, Young-Hak,Lee, June-Goo,Han, Seungbong,Ha, Hojin,Yang, Dong Hyun,Kang, Joon-Won,Lim, Tae-Hwan,Kwon, Osung,Ahn, Jung-Min,Lee, Pil Hyung,Park, Duk-Woo,Lee, Seung-Whan,Le Oxford University Press 2018 European heart journal cardiovascular Imaging Vol.19 No.10

A Novel Control of Three-Phase PWM Rectifier Using Single Current Sensor

Woo-Cheol Lee,Taeg-Joon Kweon,Dong-Seok Hyun,Taeck-Kie Lee 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-

This paper proposes a control method for three-phase PWM rectifier using only single current sensor in DC link A PWM modulation strategy for reconstructing three phase currents from the DC link current is given. The states of the rectifier switch are modified so that all phase currents can be reconstructed in a switching period although one of active vectors is applied only for a short time Therefore, a novel current control using an adjustment scheme of the modulation signal for a three-phase PWM rectifier will be discussed, and verified with the experimental results.<br/>