복강동맥 협착 혹은 폐쇄 환자에서 상장간막동맥으로부터의 측부순환로: 혈관조영술 소견의 분석

송순영,구자홍,정진욱 關東大學校 醫科大學 醫科學硏究所 1999 關東醫大學術誌 Vol.3 No.1

The purpose is to evaluate angiographic finding, various collateral pathways from the superior mesenteric artery(SHA) in patients with celiac stenosis or occlusion. We selected ninety-four patients with angiographic findings of celiac stenosis or occlusion. All patients underwent SMA angiography. Thirteen patients has variations of hepatic artery, which were right hepatic or all of hepatic arteries originating from the SMA. We retrospectively evaluated the types and incidence of dominant collateral routes from the SMA on angiographic finding's. The most common collateral routes from the SMA were via pancreaticoduodenal arcades(PDA) in 59 patients(95%) and dorsal pancreatic arteries(DPA) and their braches in 70 patients(74%). Miscellaneous collaterals other than PDA and DPA were found in 20 patients. All 13 patients with hepatic arterial variation showed miscellaneous collaterals, which were interlobar intrahepatic collaterals(n=11), right-to-left gastric arterial anastomosis(n=2), accessory left gastric artery(n=2) and peribiliary arterial plexus(n=1). Two miscellaneous collaterals in 7 patients with normal hepatic arterial anatomy were the direct aeterial channel between the SMA(n=6) and middle colic artery(n=2). In conclusion, the most common and important collaterals from the SMA are the PDA and DPA in patients with celiac stenosis or occclusion. Presence of hepatic arterial variation is main cause of development of miscellaneous collaterals.

R&D 프로젝트 수행에 대한 기술커뮤니케이션 패턴의 효과분석

홍순욱 永同工科大學校 1995 硏究論叢 Vol.1 No.1

본 연구는 기술커뮤니케이션을 연구원 개인 활동의 시각으로만 보아온 종래의 관점과 달리, 기술커뮤니케이션의 패턴을 연구원들의 집단적 활동과 개별적 활동의 두 기본 형태로 보고 각 형태의 활용도와 효용도에 작용하는 요인과 함께 성과와의 관련성을 분석하려는 것을 목적으로 한다. 이를 위해 연구가설을 설정한 후, 국내 전자산업에 속한 18개 대기업 연구소를 대상으로 설문조사를 실시하고, 다변량 분석기법을 사용하여 수집된 자료를 분석 한다. 그 결과, 집단적 커뮤니케이션과 개별적 커뮤니케이션으로 구성된 기술커뮤니케이션 패턴의 상세하고 유효한 구조가 본 연구에서 밝혀져, R&D관리에 있어서 제원리를 한충 정치화 할 수 있게 되었다. Most studies have basically dealt with technical communication from the viewpoint of individual activities of scientists and engineers. Considering the common practice of collective communication and its actual importance in solving technical problems in the private laboratories, this paper aims to try to investigate the structures of two proposed technical communication patterns(TCP), individual and collective, and its effects on the performance of R&D projects. For the purpose, a research framework is developed and some hypotheses relating to TCP are drawn. The data were gathered through questionnaires from laboratories of 18 large electric and electronic companies. Regression model and factor analysis are employed as principal tools for analysis. The results show that collective communication is more likely to be effective in some cases than individual communication in solving technical problems facing in the middle of on-going R&D projects. This implies the R&D management have to pay more attention than before to the dimension of collectiveness in technical communication.

상백피에서 추출한 단백질 분해효소의 특성

권순경,박상욱,최우영 한국식품영양학회 1998 韓國食品營養學會誌 Vol.11 No.5

상백피에서 추출한 단백질 분해효소의 효소적 성질을 분석하였다. 상백피 추출액으로부터 분리한 단백질 함량은 1.12mg/ml, protease는 비활성도로서 5.14U/mg 수준이었다. 효소의 기질에 대한 특이성은 casein을 100으로 하였을 때 albumin 63, collagen 58, hemoglobin 45, gelatin 36의 비율로 가수분해하여 육류 단백질에 주로 함유된 collagen, hemoglobin을 분해하는 능력이 비교적 큰 것으로 나타났다. 효소의 최적온도는 60℃, 열안정성은 50∼80℃로서 비교적 열에 안정하였다. 효소의 최적 pH는 6.0이었으며 pH 6.0∼7.0에서 안정하였고 pH 9.0 이상에서는 활성이 급격히 저하되었다. 따라서 옛날부터 가정에서 고기를 삶을 때 연회를 위하여 사용하였던 상백피 중에 단백질 분해효소력이 존재함을 확인하였다. Water extract of mulberry tree barks(Morus alba Linne) was studied for its proteolytic activity. Protein content of the extract was 1.12 ㎎/ml and its specific activity was 5.14 U/ml. The enzyme was active on various proteins : the relative acitities were 100 for casein, 63 for albumin, 58 for collagen, 45 for hemoglobin and 36 for gelatin, respectively. These suggested that the ability of the enzyme to hydrolyze meat was relatively high since those are major meat proteins. Optimum pH and temperature for proteolytic activity were : pH 6.0 and 60℃. And the enzyme was stable at the pH range of 6.0 to 7.0 and temperature between 50 and 80℃. Apparent proteolytic activities could support some scientific grounds of traditional application of mulberry tree barks to home cooking for meat tenderization.

친환경 방염액의 연구

이순홍,김병량,문명욱,이대정,정영호 안양대학교 산업기술연구소 2004 自然科學硏究 Vol.11 No.1

대구 지하철 참사 이후 사회 전반적으로 방염에 대한 관심이 증대되어 방염제에 대한 연구가 활발하게 진행되고 있는 실정이다. 기존의 할로겐화 방염제는 방염제 자체의 독성으로 인해 인간의 건강과 환경에 유해성이 확인됨에 따라 이를 대체할 친환경 방염제의 연구가 부각되고 있는 시점이다. 본 연구에서는 친환경 대체 방염제의 일환으로 인계와 무기계 방염제를 혼합 사용하여 우수한 방염성능 및 연소시 유독가스가 발생되지 않는 친환경 방염제의 조성을 설계하고자 하였다. 인계 방염제로서 제1인산암모늄, 제2인산암모늄을 사용하였으며, 무기계 방염제로서 붕산과 붕사를 사용하여 각 조성 배합비의 함량 변화 실험을 통한 방염 특성 평가를 수행하였다. 이와 더불어 방염제의 부착률에 따라서 방염효과가 달라지는데, 최적의 조성으로 부착률을 달리하여 경제성과 법적인 측면을 고려하여 가장 효율적인 부착률을 알아보았다. The purpose of this research is to make a non toxic flame retardants as a substitute material for toxic halogen type, and to evaluate burning area, adhesion rate and flammability of non toxic flame retardants. The non toxic flame retardants were prepared by mixing processes of ammonium phosphate monobasic, ammonium phosphate dibasic, boric acid and borax under the various preparation conditions. Flammability of polyester fabrics treated with these mixed flame retardants was investigated through measurement of burning area and adhesion rate. The burning area values were decreased with increase of the Ammonium phosphate monobasic and ammonium phosphate dibasic content of flame retardants. For economic and legal reasons, the optimum adhesion rate of flame retardants on the polyester fabrics was 50%.

방사선 조사를 받은 두경부 병소의 재건을 위한 유리피판술

채수욱,고경석,김주봉,박상훈,한상훈,이택종,남순열,김상윤 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

Radiation therapy is an effective cancer treatment modality as a primary treatment in early cancer and as an adjuvant treatment in advanced cancer, especially in head and neck lesions, but it also causes irreversible chronic damages to overlying normal tissues that may lead to wound complications. As well, at the microscopic level, radiation injury causes both stasis and occlusion of small vessels. Therefore, surgical reconstruction of previously-irradiated lesions in the head and neck poses a great problem. Fifth-six patients with head and neck lesions underwent 57 microsurgical reconstructions between 1990-1998. Thirteen patients were irradiated before surgery. The previous radiation dose was 30∼75.6 Gy. The free tissue transfer was successful in 52 of the 57 microsurgical reconstructions(91.2%). The success rate was 92.3%(12/13) in previously-irradiated patients and 90.9%(40/44) in nonirradiated patients. Postoperative complications, such as flap loss, fistula, and infection, developed in 4 irradiated patients and 8 nonirradiated patients. Overall complication rate was 30.8%(4/13) in previously-irradiated patients and 18.2%(8/44) in nonirradiated patients. Although the failure rate of previously-irradiated patients was higher than that of nonirradiated patients, there was no statistically significant difference between them. Thus, free tissue transfers in patients with previously-irradiated head and neck lesions are suitable for one-stage reconstruction.

Chrysanthemun frutescens L. 의 開花에 關한 硏究

洪淳聲,許洪旭 釜山大學校 師範大學 1979 교사교육연구 Vol.6 No.2

This study was carried out to examine the effects of day length on the flowering in Chrysanthemum frutescens L. The results obtained were as follows; 1) The elongation of stem was accelerated in the long day group and represented extreme inferiority in the short day group. 2) In the long day group, it is shown that a long interenode of stem and a deep lobation of leaf were affected as the morphological change. 3) The differentiation of flower bud was accelerated in the long day group.

체적판매에 대비한 LPG GAS REGULATOR 개발 연구

고순옥 경남대학교 경남지역문제연구원 1999 연구원 논집 Vol.5 No.-

공해가 없고 사용이 편리하고 GAS는 현재 전체인구의 97 2%에 해당하는 1,415만 가구가 사용하고 있으며 GAS소비 또한 매년 19%이상의 높은 신장을 보이고 있다 그러나 전량수입하는 GAS는 한편으로 편리한 반면 그 관리나 사용상에 있어서 잘못관리 하여 많은 안전사고와 재산상의 손실을 초래할 수 있는 양면성을 지니게 되었다 그리하여 정부는 98년말부터 가스의 원활한 공급과 불필요한 낭비 및 안전사고 예방을위해 오는 2000년 말까지 LP GAS의 체적 판매제도를 시행하고자 한다 하지만 국내의 현실은 시장변화에 대하여 능동적 대처하지 못하고 체적판매에 필요한 10kg GAS REGULATOR의 개발이 전무한 관제로 전량 외국에서 수입대체할 환경에 처하는 안타까운 현실에 직면하기 때문에 본 연구개발의 목적은 GAS REGULATOR의 기능적 기술 문제는 우선 국내의 기술로도 해결 되었기 때문에 디자인적 측면에서 고려 되어야 할 사항인 심미적 조형성, 기능성에 접근하여 빠른 시일내에 국내에서 제품의 시장성우위확보를 할 수 있도록 하고자 한다. Gas is an environment-firendly, easy-to use energy source currently used by 97 2% of the population or 14 15 million households and its demand is increasing annually at a rate of over 19% however, while it is easy to use, gas is 100% imported and misuse can lead to various hazards and loss of poperty The government is planning to introduce a " Gas Sale by Volume System"rom the end of 1998 until the end of 2000, to pormote its efficient supply and prevent unnecessary waste and safety hazards However Korea has not been able to successfully adjust to market changes and there is no research in progress aimed at developing a 10kg Gas Regulator which is necessary for a sale by-volume system Hence, Korea has no choice but to depend on imports There fore, after the rechnical problems are solved the object of our study is to design a shape which is aesthetically pleasing while possessing special features there by creating a design that will cominate the domestic market

高砂百合의 鱗片繁殖에 있어서 IAA, NAA, GA處理의 影響

洪淳馨,許洪旭 釜山大學校 師範大學 1977 교사교육연구 Vol.4 No.2

This study was carried out in order to observe the reproduction of the scale in phillippinense var. formosanum, treated with NAA, IAA, GA group on each developmental stage of the scale. The results obtained were as follows; 1) It was accelerated the ratio of new bulb formation in NAA treatment group on the scale, and inhibited it in GA treatment group. But it was not definited that treated with IAA treatment group. 2) It represented the high rate of juvenile bud in NAA treatment group on the scale and initial cells, and remarkably accelerated the developmental stage of new bulb which proceeding in some degree with GA treatment group. 3) It represented the high rate of leaf number in NAA treatment group and inhibited it treated after the developmental stage which proceeding in some degree. It accelerated the increase of leaf number that treated with GA treatment group, but remarkably inhibited in IAA treatment group. 4) It represented the high rate of flower bud formation in NAA treatment group on the scale, and inhibited it on the latter period. But in GA treatment group, especially GA7 treatment group, it represented the high rate of flower bud formation and also remarkably accelerated it treated after the developmental stage which proceeding in some degree.

계층적 평가요인 구조에서 요인 가중치 산정과 척도변환 방법에 관한 연구

홍순욱 永同大學校 1998 硏究論叢 Vol.4 No.1

평가요인에 대한 가중치 산정방법과 평가척도의 구성은 불확실성이 큰 대규모 프로젝트의 평가에 있어서 중요한 문제이다. 평가과정은 통상적으로 평가요인의 계층적 구조를 갖고 시작된다. 본 연구의 목적은 무차별곡선에 근거한 가중치 부여방법과 순위척도를 비율척도로 변환하는 척도변환 방법을 개발하는 것이다. 이를 위하여 중요도, 부족도, 그리고 프로젝트의 효과를 벡터공간에서 고려하는 세 가지의 새로운 개념을 도입한다. 이를 사용하여 본 연구에서 새로운 가중치 부여의 설정구조를 제안한다. 또한 변수변환법을 사용하여 어떻게 순위척도가 비율척도로 변환될 수 있는가를 보인다. 본 연구의 결과를 응용한다면, 프로젝트 평가에 있어서 가중치 부여와 척도화의 문제를 적은 비용으로, 보다 간단하고 실용적으로 취급될 수 있을 것이다. How to weigh factors and how to construct scales are of importance in evaluating large-scaled projects that involve high uncertainty. An evaluation process usually begins with a hierarchical structure of evaluation factors. The purposes of this study are to develop a weighting method based on indifference curves, and to propose a scale transformation method that converts ordinal scales into ration scales. Theoretically, we introduce three new concepts: The degree of importance, the degree of insufficiency, and a vector space for the effect of a project. Based on these concepts, a new weighting method is proposed. We also employ a mathematical technique to illustrate how ordinal scales can be transformed into ratio scales. In short, this paper implies that we can deal with the two major problems of weighting and scaling in project evaluation more simply and practically at the lower cost in industrial circumstances.

안면부 화상이 동반된 광범위 화상환자에게서 MEBO(Most Exposed Burn Ointment) 드레싱의 역할에 대한 연구

노순예,김애심,신현선,김도헌,허준,전욱 대한화상학회 2003 대한화상학회지 Vol.6 No.2