비파열성 뇌동맥류의 수술과 연관된 합병증

구희상,강성돈 원광대학교 의과학연구소 2009 圓光醫科學 Vol.24 No.1

비파열성 뇌내 동맥류의 크기, 위치, 환자의 나이에 따라 치료결정에 대한 논란이 많으나 적극적인 치료가 증가 추세이다. 문헌상 파열성 뇌내 동맥류보다 수술 합병증의 빈도는 덜하지만, 새로운 뇌경색이나 수술 부위와 떨어진 소뇌의 출혈과 같은 예기치 못한 합병증이 보고되고 있다. 비파열성 뇌내 동맥류는 수술 전에 증상이 없거나 심각하지 않으므로 수술이 더 용이하다고 해서 쉽게 생각하는 것은 절대 금물이고, 보호자에서 충분한 사전 설명과 함께 위험성과 효율과의 비율을 정확히 고려해야 할 것이다. Background: With advances in neuroimaging, unruptured cerebral aneurysms are being diagnosed more frequently. Surgery is warranted if surgical risk are less than the risk of natural history. In this study, we investigated the surgery related complications and its prognosis after clipping of unruptured cerebral aneurysms. Methods: The study consists of a retrospective review of 100 patients who underwent surgery performed by one surgeon for 110 unruptured aneurysms between January, 1990 and December, 2006. One hundred and two aneurysms(92.7%) were successfully clipped, and 8(6.4%) were either wapped or trapped. The clinical outcomes were evaluated in each patient by the Glasgow Outcome Scale at discharge. Results: Thirty(30%) of the patients were asymptomatic, while the remainder(70%) had various symptoms. Regarding the aneurysmal size, 4(3.6%) were giant aneurysms, and 88(80%) were small aneurysms less than 10mm in diameter. The location of the aneurysms were internal carotid artery, middle cerebral artery, anterior cerebral artery in order of frequency. Ninety eight patients recovered without any neurological deficits. A procedure-related surgical complication was diagnosed in 2 cases(2%). Complications included hemiparesis(moderately disabled) following cerebral infarction. Conclusion: The morbidity rate associated with treating unruptured aneurysms is not negligible with increasing trend of active management decision in patients with unruptured aneurysms. Treatment requires accurate assessment of the risk/benefit ratio considering natural history of the disease, and unpredictable complication ratio should be closely monitored.

p-아미노 벤조산과 포름알데히드 종합체에 관한 연구

강성구 영남이공대학 산업기술연구소 2000 産業技術硏究 Vol.12 No.-

To synthesis p-aminobenzoic acid and formaldehyde, p-nitrotoluene(0.1 mole) and formaline(0.1mole) were condensed in water bath at 65℃ and cured at 165℃. The polymer was treated with 10% KMnO₄ aquos solution and Zn-HC1. The polymer was very viuscous, dark amber and the yied was more than 65%.

Sodium oxalate와 p-aminobenzenesulfoneamide dihydrochloride에 의한 축합중합체에 관한 연구

姜聖求 영남이공대학 산업기술연구소 1990 産業技術硏究 Vol.4 No.-

Sodium' oxalate and p-aminobenzenesulfoneamide dihydrochloride were condensed in dimethyl'sulfoxide. The yield of polymer from polymerization was more than 60% and the melting poing was 438℃. The polymer was very stable at high temperture.

두부외상에 의한 기질성 정신장애환자의 단축형 K-WAIS

강종구,오상우 圓光大學校 醫科學硏究所 1996 圓光醫科學 Vol.12 No.1

The purpose of this study was to make an short form of K-WAIS for patients with organic mental disorder due to head trauma. The patients were 215 brain damage patients with organic mental disorder whose sex were composed of 160 male and 55 female. The new form consisted of comprehension, vocabulary, picture completion, and picture arrangement. Multiple correlation coefficient(R=.81) with Full IQ was higher than that of the existing short-form and could explain 66%. This result suggested that K-WAIS short-form was enable to estimate IQ for patients with organic mental disorder due to head trauma.

돼지설사 원인균 E. coli의 생육저해에 대한 유산균의 효과

姜國熙,成文喜,方泰瑛,龍球淵,林讚洙 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

E. coli A_2 diarrhea causing bacteria of pigs was anaerobically inoculated with 10^5/ml into prereduced YS medium (10% reconstituted skim milk+0.1% yeast extract), and then lactic acid bacteria were inoculated with 10^5/ml and 10^7ml into previous inoculated samples of E. coli A_2. Inoculated samples cultured at 37℃, were tested to determine changes in viable numbers of organisms and pH. The experimental results are summerized as follows: 1. In the mixed culture medium of 10^5/ml E. coli A_2 and L. casei YIT9018, E. coli A_2 decreased after 36 hours from incubation. 2. In the mixed culture medium of 10^5/ml E. coli A_2 and L. acidophilus, E. coli A_2 drastically decreased after 24 hours from incubation and was almost disappeared after 72 hours from incubation. 3. In the mixed culture medium of 10^5/ml E. coli A_2 and L. bulgaricus, E. coif A_2 drastically decreased after 24 hours from incubation and was almost disappeared after 72 hours from incubation. 4. In the mixed culture medium of 10^5/ml E. coli A_2 and Str. thermophilus, E. coli A_2 decreased after 12 hours from incubation. 5. When the pH value of the mixed culture, was, 4. 5 below, E. coli A_2 decreased.

한국의 소집단 활동 진흥 방안에 관한 실증적 연구

구일섭,김태성,이강인 남서울대학교 2005 남서울대학교 논문집 Vol.11 No.2

The purpose of this research is to suggest the policy making for the effective promotion of Quality Small-Group activity. Since 1975, variety of organizations in Korea have widely the implemented Quality Small-Group activities for their management systems. Today, Companies are facing the harsh realities of a competitive environment. This is no time for revolutionary change. Instead, Companies are instituting revolutionary change meant to have impact within a very short time frame. Bold steps are required to lead the industry into a future of improved efficiency and significant productivity gains. The Worker's Quality Small-Group activity is, essentially, a trouble shooting oriented voluntary small group within their working place to improve the surroundings creatively. The industries have enthusiastically used Quality Small-Group activities and were influenced from them. The Quality Small-Group activities can be regarded as a kind of Knowledge Management where new knowledge is created and knowledge is shared in the economy. However, the academics were less interested in this subject, as a result, there were no systematic guidances for Quality Circle activities. Also, the government was less interested in these activities, as a result, there were no systematic policy making for Quality Small-Group activities. Thus, in this research, the effective policy making for Quality Small-Group activities were suggested which were based on the results of survey Questionnaires. As a results of this research, to maximize the effect of TQM in the nationwide, Quality Small-Group activity as a bottom-up management should be more expanded and revitalized.

관상동맥질환 환자에서 스텐트 시술 후 재협착에 관한 연구

강진환,권영주,박상호,한대희,이상철,김명구,변정득,최병조,심규혁,온영근,현민수,김성구 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2

Background and aims : In the coronary artery disease, a rate of restenosis was much decreased by placement of coronary stent than when percutaneous transluminal coronary angioplasty has been applied, but there are still important clinical problems of restenosis. There has been many progressive studies about various factors contributed to this restenosis. So, we studied a relation between restenosis after placement of coronary stent in the coronary artery disease and many clinical factors, characteristics of stenotic lesion and procedural factors, and also assessed the restenosis rate of various coronary stents. Methods : Total 58 lesions(46 cases of patients ; man 30, woman 16) were evaluated, which has been performed a follow-up coronary angiography after 6 months (mean 188 days) since coronary stent had been placed. Various stents were implanted and assessed a relation between restenosis and many factors. Results : Of 58 lesions were target stenotic studies, there were 22 of restenotic lesions(37.9%), and the restenosis rate wes statistically significant difference in the relation with diabetes mellitus(p<0.05), group of acute myocardial infarction(p<0.05) among clinical diagnosis of ischemic heart disease(stable angina, unstable angina and acute myocardial infarction) in clinical factors and with high dilation pressure of stent(p<0.05) in procedural factors. When the rate of restenosis was evaluated among implanted stents, it was lowest in the Multilink^(®) stent and highest in the Nir Royal^(®) stent(60%). Conclusion : In this study of restenosis and various factors after placement of stents in the coronary artety disease, factors such as diabetes mellitus, group of acute myocardial infarction and a dilation pressure of stent were significant related with restenosis and the restenosis rate of Multilink^(®) stent was lowest and the highest restenosis rate was of Nir Royal^(®) stent.

철강산업의 국제경쟁력에 관한 연구

구종순,조성원,강신원 충남대학교 경상대학부설 경영경제연구소 1998 경영논집 Vol.14 No.1

고성장산업인 철강산업은 그 발전의 정도에 의해 국가경쟁력의 우위를 판가름하는 하나의 기준이 될 것이다. 본고는 우리나라 철강산업의 국제경쟁력을 무역특화지수, RCA지수, 총요소생산성등 세가지를 사용하여 경쟁력을 파악하고 동산업에 대한 경쟁력 제고방안을 살펴보았다. 분석결과 철강산업의 경쟁력은 1992-3년을 기준으로 급속히 악화되고 있는 것으로 분석되었다. 따라서 경쟁력 제고를 위해서는 첫째, 수요변화와 고부가가치상품을 생산하기 위한 기술개발 및 경쟁력을 확보해야 한다. 둘째, 효율적 생산확대 및 수출진흥정책을 통하여 철강산업의 성장 및 경쟁력제고를 유도해야 한다. 셋째, 철강기업을은 자원의 재활용 비중을 높여 생산비용 절감 및 국제환경기준에 대비하여 앞으로의 경쟁력을 확보하여야 할 것이다. 넷째, 급변하는 국내외적 경영환경에 능동적으로 대처할 수 있도록 건실한 재무구조를 구축하여야 한다.

한강수계의 주요 오염원별 부하량 비교분석

구본수,강성환,임재명 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-

The purposes of this research were constructed the database, based on graphing the present water pollution in Han-river due to livestock wastewater(LSW). The LSW was below 1% in respect to quantity but about 7% in respect to pollutions loading in overall Han-river. The ratio of untreated LSW is 18% to 28%, which was higher compared to the municipal and industrial wastewater. In other words, LSW was about 0.05 times of municipal wastewater in respects to quantity but 2 times in respect to the ratio of untreated wastewater. So, it was necessary for treating LSW. The pollutions loading due to livestock wastewater of the South Han-river. North Han-river and main stream were 19.7%, 19.4% and 4.0%, respectively. This was about 7% in overall Han-river. We separated the Han-river into upper, mid and down stream. As a result, we found that the livestock wastewater is the main water pollution source of upper Han-river.

p-Aminobenzenesulfonamide와 formaldehyde의 중합체에 관한 연구(Ⅰ)

강성구 영남이공대학 산업기술연구소 1996 産業技術硏究 Vol.9 No.-

p-Aminobenzenesulfonamide and formaldehyde were condensed in aquous solution. It melt near 100℃ partially soluble in polar wolvent and the yield of polymer was more than 80%.