대장직장종양에 있어서 Hand-Assisted Laparoscopic Surgery (HALS)의 초기 경험

조호영,최선근,구지회,허윤석,이건영,김세중,조영업,안승익,홍기천,신석환,김경래,우제홍 대한내시경복강경외과학회 2003 대한내시경복강경외과학회지 Vol.6 No.-

췌십이지장절제술 후 결과에 영향을 미치는 인자

정희석,정귀애,장정환,김권천,민영돈,김성환 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1

`Background : Pancreatoduodenectomy is a widely used technique in the treatment of periampullary, duodenal and cephalic pancreatic disease. Although many improvements have been made in operative technique and posmiddleerative care, pancreatoduodenectomy remains a technically difficult procedure attended by relatively high morbidity and mortality rates. Materials and methods : The hospital records of 51 patients who underwent pancreatoduodenectomy at the Chosun University Hospital between 1994 and 2001 were reviewed. Clinical data and the following morbidity and mortality were recorded The risk factors were analyzed by a Chi-square test. Results : Fifth decade was the most prevalent ages (43.1%) The mean age was 59 years (ranging from 29 to 78) and the male to female ratio was 26 to 1. The periampullary cancer was the most reason to operation (86%) and injury due to trauma, adenocarcinoma of stomach, colon cancer, chronic pancreatitis in order Posmiddleerative complications were developed in seventeen patients and anastomotic leakage was the most common complication Death within a month after operation was 3 (5.8%) and the one of the cause of death was leakage in two patients, the other cause was intraadbominal bleeding in one patients. The cardiovascular disease, pulomnary problem, diabetes, level of bilirubin were checked preoperatively and showed no statistical difference in the posmiddleerative morbidity. The other factors such as amount of bleeding, operation time were not influencing posmiddleerative complications. The occurrence of leakage in eight cases of drainage tuve inserted into the pancreaticojejunostomy site was not different from no tuve insertion statistically Conclusion: old age of the patients, diabetes mellitus and massive intraoperative hemorrhage are the risk factors influencing the results after pancreatoduodenectomy. Morbidity and mortality after pancreatoduodenctomy can be devreased if a prudent selection of paients is made and the operation is performed by accomplushed surgeon.

자성선숙어(protogynous fish)의 성전환

이영돈,고환봉,김형배,박인석,이정재 제주대학교 해양연구소 1993 해양자원연구소연구보고 Vol.17 No.-

Studies and reviews have been based on sex reversal diagnosis of histological change and body color change by sexual dimorphism on protogynous hermaphrodite fish, Labridae, Serranidae inhabited at the costal area of Chejudo. Korea Halichorens poecilopterus, Pleragoguw flagellifera and H. teruispinis were summer season, spawing species which mainly spawn in Jun and July, but Pseudolobrus japonicus was autumn season spawing species which mainly spawn in October and November, The standard length range of sex reversal were 13.0-15.0cm H. poecilopterus 9.5-15.0cm P. flagellifer, 11.5-16.0 cm P. japonicus and 10.0-13.0cm (total length) H. teraispinis respectively. Sex reversal mainly appeared before and after spawing season. H. Poecilogterus, H. terusispirus and P. japonicus were composed of monandry and diantry, but P.flagellifera was diandry. By sex reversal, the body colors of H. poecilopterus, P.flagellifera and P. japoricus change from pale red or yellow lines to brilliant green or dark yellow lines. The body colors of H. tenurisspirnis change slight, but containe lateral stripe pattern and blue spot in body center. In P. flagellifera, 1st, 2nd spine process of dosal fin were grown with body colour change. In sex reversal process, histological change of Labridae of inner gonad showed development of various interstitial cells and blood vessel by degeneration of oocyte. Thereafter, spermatogonia and spermatocyte begin to appear at the inner edge regions of the ovarian lamellae and then converted from ovary to functional testis. Epinephelus moara of 30.0~92.3cm in TL, E. Septemfasciatus of 23.4~38.7cm in TL were female with contained oocyte of perinucleolus stage. E akaara of 22.0~33.0cm in TL appeared individuals of ovotestis.

부산시 가로수 현황과 토양환경개선에 관한 연구

김석규,박승범,남정칠,김승환,강영조 동아대학교 건설기술연구소 1999 硏究報告 Vol.23 No.2

The purpose of this study is to analyze the correlation between soil hardness, soil acidity, and the vitality of street trees. This data was investigatived in 40 areas on 10 main street routes of Pusan; Chungang-ro, Naktong-ro, Suyeong-ro, Taejong-ro, Konghang-ro, Kudeok-ro, Kumjeong-ro, Mandeok-ro, Kaya-ro, Chungjang-ro. The findings are as follows : 1. The average soil hardness where tree grates have been built was shown to be 22.23㎜. In the absence of tree grates, the average soil hardness was 24.60㎜. These figures do not exceed the accepted parameters for acceptable soil hardness when rearing trees (22∼25㎜). However, soil hardness was measured higher in areas where tree grates were absent. Consequently, tree grates are necessary. 2. Soil acidity was measured as satisfactory(pH 5.5), mediocre(pH 5.5∼5.0), inferior(pH 5.0∼4.5), very inferior(pH 4.5). No areas were measured as satisfactory soil acidity. Four areas were measured as mediocre(10%), 19 areas as inferior(47.5%), and 17 areas as very inferior (42.5%). This indicates a requirement to improve soil acidity as about 90% of the investigatived areas were measured as either inferior or very inferior. 3. The following is an analysis of correlation between soil hardness, soil acidity and the vitality of the Ginkgo biloba ; The Ginkgo biloba was found to have a positive correlation was measured with the diagram (R²). In conclusion, the results of the analysis show a strong influence of soil hardness and soil acidity upon the vitality of Street Tree.

남북상사중재위원회 운영상의 문제점과 활성화방안

최석범,박근식,김태환,김재학,박선영 한국중재학회 2007 중재연구 Vol.17 No.1

The commercial relationship between South and North Korea is defined under the concept of economic relation and cooperation. To resolve any dispute that can arise from the trade and investment relations between South and North Korea, 'Agreement on the Procedures to Resolve Commercial Arbitration of South-North Korea' came into force in August 2003. Commercial Arbitration Committee of South-North Korea will be organized as the member lists of the committee were exchanged in July 2006 between South and North Korea. This committee must become a central system to settle the trade and investment disputes between South and North Korea. North Korea's Foreign Economic Arbitration Act was enacted to provide the foreign investors with the safe measures in their investments such as dispute resolution. But this Act can not dispute the trade and investment disputes between South and North Korea. The purpose of this paper is to contribute to the activation of arbitration between South and North Korea by studying Commercial Arbitration Committee of South-North Korea introduced by Agreement on the Procedures to Resolve Commercial Arbitration of South-North Korea and Agreement on the Construction and Operation of Commercial Arbitration Committee of South-North Korea and finding the problems and solutions of Commercial Arbitration Committee of South-North Korea.

일차 양측성 구순열의 일단계 재건에 대한 증례보고

임석균,이기혁,김영균,김수관,이병준,여환호,서재훈 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Bilateral cleft lip reconstruction can be performed in one-or two-stages. The choice depends on the surgeon's proficiency and experience. However the type and severity of the cleft must be considered. Complete or incomplete symmetric, bilateral clefts in which the premaxilla is within the alveolar arch or slightly protruded can be successfully treated with simultaneous lip reconstruction on both sides. There are some advantages that one-stage lip reconstruction facilitates creation of a symmetric and balanced lip, retraction of protruding premaxilla and the parent's psychologic satisfaction. However, there are some disadvantages such as micrognathia of the upper jaw by severe scar formation and poor adaptation of flap margins by severe tension. The surgeon must be able to judge and exploit the advantages offered by one-stage approach. We present the case report of one-stage reconstruction of primary bilateral cleft lip with literature reviews.

정신분열병의 경과 중 발생하는 우울증

곽경환,박두병,최태영,민경준,이영식,기백석,나철 大韓神經精神醫學會 2002 신경정신의학 Vol.41 No.3

연구목적 : 정신분열병을 음성증상군과 양성증상군으로 나누어 두 군 사이에 우울증이 차이가 있는지를 조사하고 정신분열별의 증상과 우울증과의 연관과 정신분열병의 경과 중 보이는 우울증사의 특징에 대해서 알아보고자 하였다. 방 법 : 중앙대학병원에 입원한 총 31명(남자 13명, 여자 18명)의 정신분열병 환자를 대상으로 PANSS, BDI, HDRS와 Simpson Angus Scale을 시행하였다. 결 과 : 1) BDI 21점 이상을 기준으로 했을 때, 정신분열병의 경과 중 우울증이 발생한 환자는 총 18%였으며, 양성증상군과 음성증상군 간에 차이는 없었다. 2) 양성증상군과 음성증상군 간에 BDI, HDRS 그리고 PANSS-D 등의 점수의 차이는 없었다. 3) 주관척도인 BDI와 객관척도인 HDRS와 PANSS-D 사이의 연관은 없었다. 결 론 : 정신분열병의 우울증은 양성증상이나 음성증상의 한 부분으로 생각하기보다는 또 다른 영역으로 받아들여야 할 것으로 보인다. 임상적으로 정신분열병에서 우울증은 발생되는 비율의 정도를 고려할 대 다른 증상과 더불어 집중적인 관심이 필요하며 이와 함께 우울증으로 인한 결과와 예후의 심각성을 고려할 때 우울증에 대한 인식 및 진단과 치료에 더 많은 진전이 있어야 한다. Objective : The heterogeneity of symptomatology within the group of schizophrenias is still a major obstacle for defining clinically useful subgroups of these disorders. One of these symptoms is depression. Recently there is a growing evidence suggesting that depressive symptoms and related mood disturbances are important in treating schizophrenia. This so because of the improvement of such side effects as extraphramidal symptoms with increasing use of atypical antipsychotics. Althought depression is known to be a serious problems of many schizophrenic patients, the nature and course of depression in schizophrenia remain unknown. Methods : The author examined the depressive features in 31 patients with schizophrenia. Rating on the PANSS, BDI and HDRS were obtained. Eighteen percent of the total patients had BDI score above 21, considered depressed. Results : There were no difference in BDI, hDRS and PANSS-D between positive symptoms group and negative synptom group. There was also no correlation between subject scale(BDI) and objective scales(HDRS, PANSS-D). Conclusions : Depression in schizophrenia needs intensive studies. It is also considered as another hereogeneous domain beside negative or positive symptom domain. Out of respect for the high prevalence and serious outcome of depression in schizophrenia, a more differentiated assessment, analysis, and treatment of depressive symptom is recommended.

剔出된 蟲樣突起 150例의 寄生蟲學的 調査成績

朴永燮,宋台錫,金鍾煥 醫藥係社 1964 綜合 醫學 Vol.9 No.2

Aluminum-Alloy 용접재의 피로균열성장 거동 추정법에 관한 연구

이환우,정영석 慶南大學校 附設 工業技術硏究所 1988 硏究論文集 Vol.6 No.-

본 연구에서는, Aluminum Alloy용접재의 피로균열성장거동에 대한 용접잔류응력의 영향을 고찰하였으며, 피로시험에 사용된 시편은 모재와 용접재의 두 종류의 시편으로 하였다. 하중 축방향의 용접잔류응력의 측정에는 Strain Gage Sectioning Method로 측정하였으며, 피로시험은 일정진폭 하중하에서 응력비(R)를 각각 0.1, 0.3, 0.5로 하여 수행하였다. 피로균열성장거동의 추정을 위한 이론적인 해석에는 Toyosada's Eq.을 이용하였으며, 그리고 R=0.5일때는 Toyosada's Eq.을 수정, 추정하였다. 피로균열성장거동의 이론적인 추정결과들은 중첩법을 이용하여 구한 유효응력비(R???)와 유효응력확대계수변동범위(△K???)를 사용할 때 더욱 실제적이었다. 따라서 본 연구는 일정진폭하중하에 모재의 피로시험으로부터 구한 C, m값과 용접재에 대한 잔류응력분포를 이용하여, Al-Alloy 5052-H38용접재의 피로균열성장거동에 대한 이론해석과 실험해석을 병행하였다. In this research, the effect of welding residual stress on fatigue crack growth in Aluminum Alloy weldments was discussed. Fatigue tests were performed with unwelded(parent metal) and butt Welded SEN specimens. Welding residual stress parallel to the loading direction were measured by using strain gage sectioning technique. All specimens were tested under constant amplitude load with stress ratio R=0.1, 0.3, and 0.5 respectively. Toyosada's equation was used for theoretical analysis of the estimation of fatigue crack growth behavior under constant amplitude load, and modified Toyosada's equation was used when stress ratio R was 0.5. The theoretical results were more realistic as used effective stress ratio R??? effective stress intensity factor range DK??? which calculated from superposition method. This paper present both experimental results and a theoretical estimation of fatigue crack growth behavior in AluminumAlloy 5052-H38 weldments on the basis of material constant i.e. m values obtained from parent metal specimens tested under constand amplitude load and also considering welding residual stress distribution of weld metal specimen.

적응-강인 제어기법을 이용한 유압 굴삭기의 궤적 제어

최종환,김용석,김승수,양순용 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

This paper proposes a combined controller frame of the adaptive robust control(ARC) and the sliding mode control(SMC) for the trajectory tracking control of the excavator to preserve the advantages of the both methods while overcoming their drawbacks, namely, asymptotic stability of adaptive system for parametric uncertainties and guaranteed transient performance of sliding mode control for both parametric uncertainties and external disturbance. The suggested control technique is applied for the tracking of a straight-line motion of end-effector of manipulators, and through computer simulations, its trajectory tracking performances and the robustness to payload variation and uncertainties are illustrated.