남부지방 서식식물의 유용물질 탐색 Ⅲ : 페놀화합물 Phenol compounds

김학진,임준택,현규환 順天大學校 1997 論文集 Vol.16 No.1

남부지방에 자생하는 식물체 8종을 대상으로 페놀화합물을 용배분획, TSC등으로 분리정제하고 HPLC로 분석한 결과를 요약하면 다음과 같다. 1) 실험대상 식물체 8종 중에서 total phenols 및 축합형 tannin의 함량은 달맞이에서 가장 높았다. 2) 페놀화합물을 유리페놀산 획분, 페놀산ester 획분, 불용성결합형페놀산 획분으로 분리하여 각각의 획분에 대하여 HPLC를 실시한 결과, 식물체 8종에서 유리페놀산 획분의 경우, 주로 발견되는 페놀산은 coumalic acid, catechin, caffeic acid 그리고 cinnamic acid였으며, 페놀산ester획분과 불용성결합형페놀산 획분의 경우는 coumalic acid와 catechin이 주로 발견되는 페놀산이었다. This research was conducted to determine contents of phenol compounds for plants distributed in the sourthern region of Korea. The extracts from each plants were purified by solvent fractionation, TLC and analyzed HPLC. As a result, contents total phenols and condensed tannin were the most highest in Oenothera odorata among the all plants examined. Most of the phenolic acids in free phenolic acid fractions was coumalic acid, catechin, caffeic acid and cinnamic acid, and those in soluble phenolic acid ester fractions and insoluble-bound phenolic acid fractions were coumalic acid and catechin.

품질관리 분임조 활동 영향요인의 중요도

송학진,김상길 동의공업대학 1998 論文集 Vol.24 No.1

This paper is concerned with the importance of effective factor in Quality Control Circle Activity. The Quality Control Circle Activity is very important factor for a successful Total Quality Management(TQM). We inquired into D company in Pusan, and analyzed it's data through the AHP method. The result of analysis shows that the concern of top manager is very important factor for Quality Circle Activity. And also, circle members' voluntary participation and cooperation are very important factors.

MO이론에 의한 Diels-Alder 반응의 배향성과 반응성의 결정(Ⅰ)

丁學鎭,金一斗,朴聖珪 조선대학교 기초과학연구소 1985 自然科學硏究 Vol.8 No.1

This paper aims to predict the reactivity and the regioselectivity of Diels-Alder reactions of unsymmetical dienes and dienophiles. Frontier orbital theory has been applied to thermal Diels-Alder reaction by means of CNDO/2 and EHT-spd methods. The above reactions are normal electoron demand reaction and the major regioisomer is the para-substituents that is identical with experiments. Four-frontier orbitals and two-frontier orbitals' methods are identical with experimental major regioisomers. Sulfur is a much more polarizing substituent for the dienes than chlorine and cyanoradical. When sulfur is in diene, it shall dominate the regioselectivity. The coefficient polarization of substituted dienes and dienophiles is the same direction. We can predict the major regioisormer as para-substituents.

정신과 문제로 병사용 진단서를 발급받은 환자들의 임상적 특징

장혁진,김학렬,박상학,김상훈,조용래,표경식 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Background and Objectives : Most Korean young men should take a military physical examination. This study attempted to search the social, economical and psychological features of Korean youths who have psychiatric problems in taking the military physical examination. So this study was intended to help decide whether the youths enter the military service or not. Materials and Methods : This study analyzed diagnostic features that were grouped by 7 categories (antisocial and borderline personality disorder group, the other personality disorders group, psychosis group, organic mental disorder group, neurosis group, pervasive developmental disorders group, the other groups). The study was conducted from 1994 to May 1999 at Chosun University hospital with about 143 patients who were issued the psychiatric certificate for military affairs. Results : According to the results of the psychiatric examination, the antisocial and borderline personality disorder group had increased more year by year than the other groups. Classified by the residential distribution, the residents of agricultural areas belonged to the psychosis group more than others. Classified by the job distribution, the antisocial and borderline personality disorder group had more gangsters than the other groups. Also the pervasive developmental disorders group included those Who were without an occupation. Classified by visiting companion, those who were included in the antisocial and borderline personality disorder group and pervasive developmental disorders group used to come alone as compared with the other groups. In the case of those who have experienced psychiatric treatment in the past and who have been treated psychiatrically after being given the psychiatric certificate, the psychosis group comprised more than 50% statistically. In the case of the existence of a tattoo and self-injured scars, the antisocial and borderline personality disorder group has more than the others statistically. According to psychological examination, by measure of validity scale of MMPI, the antisocial and borderline personality disorder group appeared as the inverted V shape that L, K value was low and F value was high. And the antisocial and borderline personality disorder group measured by the Pd, Pa measure. Pd, Pa measure value got higher points than the organic mental disorder group statistically. Conclusion : The number of the antisocial and borderline personality disorder patients’ visits increased at the psychiatric hospital year by year and there were many gangsters or persons without regular occupation in that kind of patients’group. And there were many visitors who came by themselves to the hospital. Also they tended to have a tattoo or self-injured scars. And most of patients didn’t do commuting psychiatric care after receiving the psychiatric certificate. In the aspect of the psychological examination, they were likely to exaggerate their symptoms or disguise having psychiatric trouble intentionally.

자라 Amyda maackii BRAUT의 췌장 내분비세포에 관한 세포화학적 연구

李學仁,金鎭澤 동국대학교 경주대학 1986 論文集 Vol.5 No.-

Cellular composition of the pancreatic islets in the freshwater turtle Amyda maackii BRAUT were studied under cytochemical technique. The results obtained are as follow ; 1. Lots of blood vessels are distributed in the pancreas of the freshwater turtle and the pancreatic endocrine cells constitute the islet at the periphery of the blood vessel. 2. The pancreatic islets are not surrounded with connective tissue capsule. 3. The pancreatic endocrine cells consist of B, A_1 and A, cells and then for the most part of the pancreatic islet are composed of only B cells or A cells. 4. B cells have the AF positive secretory granule in apical portion and A_1 cells have the cytoplasmic process for various direction. 5. A lot of endocrine cells are observed in the pancreatic exocrine tissue.

전방 도달법과 수장부 T자형 금속판 고정을 통한 원위 요골 골절의 치료

최우성,김원유,최동원,신윤학,김진영 대한골절학회 2003 대한골절학회지 Vol.16 No.2

목적 : 원위 요골 골절에 대해 전방 도달법을 이용한 관혈적 정복 및 수장부 T자형 금속판 내고정술의 방사선학적 및 임상적 결과를 분석하여 문헌 고찰과 함께 보고하고자 한다. 대상 및 방법 : 도수 정복이 되지 않았거나, 심한 분쇄 골절로 인해 도수 정복 상태가 유지되지 못했거나, 부적절한 관절면의 정복 등의 이유로 원위 전완부 전방 도달법을 이용한 관혈적 정복 및 수장부 T자형 금속판을 이용한 내고정술을 시행 후 최소 1년 이상 추시 관찰이 가능하였던 19예를 대상으로, 수술 전 후의 방사선학적인 평가와 최종 추시시의 기능적 평가를 Green과 O'Brein의 방법을 이용하여 평가하였다. 결과 : 수술 직후 모든 예에서 관절면의 해부학적 정복을 얻을 수 있었다. 방사선학적 결과에서 요골 관절면의 요골 길이는 수술 전 평균 8.8 ㎜ (±4.8 ㎜)에서 수술 후11 ㎜ (±3 ㎜)로, 요골 경사각은 평균 15˚ (±5.7˚)에서 20˚ (±5˚)로, 전방 경사는 평균 -11˚ (±13˚)에서 7˚ (±4˚)로, 척골 양성 변이는 평균 4 ㎜ (±3 ㎜)에서 0 ㎜ (±1 ㎜)로 향상되었으며, 기능적 결과에 있어서는 우수 9예, 양호 7예, 보통 2예, 불량 1예 이었다. 추시 중 초기 수상이 심하였던 1 예에서는 정복의 소실과 함께 장 무지 굴건의 파열이 초래하였다. 결론 : 원위 요골 골절의 수술적 치료에서 일부 제한된 범위에서만 적응증이 되었던 수장부 금속판 내고정술로 방사선학적 측면과 기능적인 측면에서도 만족할 만한 결과를 얻었으며, 초기 분쇄 골절이 심할 경우에는 정복의 소실을 예방하기 위하여 외고정기를 부수적으로 장착하는 것이 좋을 것으로 생각된다. Purpose : To analyze the radiologic and clinical results of open reduction and volar plating through anterior approach for distal radius fracture. Materials and Methods : We retrospectively analysed that 19 distal radius fracture, which would not be reduced by closed reduction or too comminuted to maintain reduction or articular surface incongruency, were treated by open reduction and volar plating through anterior approach. The results were evaluated by preoperative and immediate postoperative radiographics and clinical results were analysed using Green and O'Brien scoring system at final follow up. Results : All cases achieved anatomical articular surface reduction postoperatively. In terms of radiologic analysis, mean radial length (8.8 ㎜±4.8 ㎜ vs. 11 ㎜±3 ㎜), radial inclination (15˚±5.7˚ vs. 20˚±5˚), volar tilt (-11˚±13˚ vs. 7˚±4˚) and ulnar plus variant (4 ㎜±3 ㎜ vs. 0 ㎜±1 ㎜) were improved. The clinical evaluation revealed 9 excellent cases, 7 good cases, 2 fair cases and I poor case. The reduction loss and flexor pollicis longus rupture was occurred in one patient, who had severely displaced comminute fracture in initial injury. Conclusion : Using volar plating, authors gain good radiologic and clinical results. But, additional external fixation is recommended to prevent further collapse in severly comminuted fractures.

流通環境變化에 따른 去來構造 決定要因에 관한 硏究

李承郁,金學鎭 단국대학교 산업연구소 2002 산업연구 Vol.23 No.-

Rapidly changing managerial environment at home and abroad is exerting very big influences for enterprise activities, In order to cope with overseas markets which are changing like this, first lf all a survey of the markets and consumers regarding the sought for should go first and how faster they meet the satisfaction factors than competitors can be regarded as the key for a successful enterprise activities. The main purpose of this study is to present a strategic plan that export enterprises can determine the distribution transaction structure more effectively by finding the factors which influence the integration level of distribution transaction structure for the export enterprises related to electronics in our country. Though in this research the explanatory power has been strengthened by reducing and abridging the diverse variables related to the integration of distribution transaction structure to several variables, as a result of over simplification of these variables the strategical aspect which is one of the important goals of this research has been treated negligently, there by disclosing he limits of the research. Paying attention to such point export enterprises in the light of securing competitive power in the markets, they may achieve t도 growth as on going concern only if they put there hearts and soul into developing their corporations unique distribution transaction structure here in after.

主觀的인 評價에 의한 靑少年의 肥滿傾向 分析

權善鈺,金基學,李東洙,鄭鎭國 慶北大學校 師範大學 體育學硏究會 1992 體育學會誌 Vol.20 No.-

This study was conducted to analyze the tendency of obesity by subjective evaluation method in measuring the skinfold thickness in adolescents. The validity norms were height, weight, the sum of skinfold thickness, Db1, %Fat1, %Fat2, and BMI. The subjects surveyed were 2,442 boy and girl students of middle and high school in medium and small city and big city. The results are summarized as follows; 1. Weight of adolescents evaluated as obesity was over 76㎏ in boy's middle, over 67㎏ in gril's middle school, over 79㎏ in boy's high school, and over 68㎏ in girl's high school, the sum of skinfold thickness was over 40㎜, over 39㎜, over 54㎜, and over 41㎜ respectively. 2. Except the case of height in girl's middle, boy's high and girl's high school, in height in boy's middle, weight, the skinfold thickness, Db1, %Fat1, %Fat2, and BMI, difference among the degree of obesity evaluated subjectively was significant(p<.05). 3. Except heigh in girl's middle, boy's and girl's high school, correlation between the degree of obesity evaluated subjectively and height in girl's middle school, weight, the sum of skinfold thickness, Db1, %Fat1, %Fat2, BMI respectively was high and significant(p<.01 or p<.001) Therefore, on the basis of above results, I think we can evaluate the tendency of obesity in adolescents validly by subjective evaluation method as well.

Poly-(acrylic acid-co-methylacrylate)합성조건에 따른 시멘트계 재료의 물성

조헌영,서정목,이효진,이기환,김진만,맹학영 공주대학교 생산기술연구소 2000 論文集 Vol.8 No.-

The water soluble polymers based on polycarboxlates are come into the spot-light in the detergent fields of CaCO_3, Al(OH)_3 and leather industries. In this research, we synthesized molecular weights(Mn) by changing the concentrations of monomer(acrylic acid-methylacrylate mixture), chain transfer agent(butanethiol) and initiator(ammoniumpersulfate). We investigated the influences on the fluidities(the flow & the mini slump) and the setting times of cement material admixtured with the copolymers by the statistical method. The optimum synthesis formulation of the poly-(AA-co-MA) for cement materials is at the concentrations of monomer 50 M%, chain transfer agent 6.0 M% and initiator 2.0 M%. The number-average molecular weight of that was decided on 7,600 by the viscosity method.

Inductively Coupled Plasma Etching of AZO and ZnO in CI2/CH4/H2/Ar and BCI₃/CH4/H2/Ar Chemistries

Hack Joo Lee,Bong Soo Kwon,Young Rok Park,Joung Ho Ahn,Jin Sung Kim,Sun Il Kim,Hyun Woo Kim,Nae Eung Lee 한국표면공학회 2008 한국표면공학회 학술발표회 초록집 Vol.2008 No.-