절제불능 위암의 임상적 고찰

전갑승,장일성 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

This study was a review and clinical analysis of 58 cases with unresectable stomach cancer among 293 cases of stomach cancer who received operation, of 344 patients who were diagnosed to stomach cancer on the Department of Surgery, Chungnam National University Hospital for 3years and 3months from 1st, june, 1986 to 31st, August, 1989. The results were obtained as follows: 1. The most frequent age group of unresectable stomach cancer was the 6th decade and male to female ratio was 4.3:1 and duration of symptom to operation was predominated in the group of less than 3 months with 28 cases (48.2%) and mean symptom duration was 10.9 months. 2. The most common symptoms in order of frequency were epigastric pain & discomfort(98.3%), indigestion (74.1%), nausea and vomiting (65.5%), anorexia (62.1%) and the most common physical findings were epigastic tenderness (91.4%), palpable epigastric mass (31.0%) and cachexia (24.1%), and the patients with the weight loss more than 5.0㎏ were 24 cases (41.4%). 3. The patients with anemia (hemoglobin; loss than 10.0gm%) were 15 cases (25.9%), and with abnormal albumin level than 3.5gm% were 22 cases (37.9%). Serum AFP & CEA were measured on 33 and 42 cases of 58 cases with unresectable stomach cancer, respectively and patients with abnormal high S-AFP and S-CEA range were 6 cases(18.2$) and 18 cases (42.8%), respectively. 4. The most common site on the tumor was pyloroantral region of lesser curvature 31 cases (53.3%), and macroscopic size of the tumor in order of frequency was adult fist size (44.8%), child fist size (41.5%), and in the pathologic findings, all cases were adenocarcinoma, especially moderate differentiated type; 11 cases (40.7%). 5. The operative procedures performed for our cases; exploratory-laparotomy and biopsy 26 cases (44.8%); gastrojejunostomy 24 cases (41.5%); feeding gastrostomy or feeding jejunostomy 5 cases (8.6%); simple closure & gastrojejunostomy 2 cases (3.4%); sigmoid loop colostomy 1 case (1.7%). 6. The most common causes of unresectability of the tumor in order of frequency were due to direct invasion and/or mastastasis to pancreas 26 cases (44.9%), both pancreas and hepatobiliary 18 cases (32.2%), hepatobiliary 10 case (17.1%). So, unresectability ratio related to pancreas and hepatobiliary was 44 cases (76.1%) and 28 cases (48.3%), respectively.

「대학수학능력시험」수리탐구(I)영역에 관한 문제점과 그 개선책에 관한 연구

양승갑,박채리,김병무 명지대학교 자연과학연구소 1998 자연과학논문집 Vol.17 No.-

본 논문은 1994학년도부터 처음으로 시행된 대학 입시제도인 대학수학능력시험에 대한 문제점과 개선책을 알아보는데 목적이 있다. 특히 1996학년도에 시행된 대학수학능력시험에서 수리,탐구(I)영역에 대한 문제를 모두 분석, 조사하여 연구를 수행하였다. The purpose of this study is to find several problems for the mathematical part of the college entrance examination in Korea. In addition, we propose new methods to improve the mathematica part of the exam. The material for the study is highly based on the real entrance exam, given in 1996.

원에서의 위상동형사상의 분해

양승갑;심호진 명지대학교 자연과학연구소 2004 자연과학논문집 Vol.23 No.-

In this paper, we prove that every increasing homeomorphism of a closed and bounded interval can be represented as a composition of two or four decreasing involutions. And we show that every decreasing homeomorphism of a closed bounded interval is either a decreasing involution, or can be represented as a composition of three decreasing involutions. And we investigate factorization of circle homeomorphisms via involutions. 이 논문에서 유계인 폐구간에서의 임의의 증가하는 위상동형사상은 2개 또는 4개의 감소하는 대합(involution)들의 합성으로써 나타낼 수 있음을 증명하였고, 유계인 폐구간에서의 임의의 감소하는 위상동형사상은 하나의 감소하는 대합이든지 또는 3개의 감소하는 대합들의 합성함수로 나타낼 수 있음을 보였다. 그리고 대합을 통해서 원에서의 위상동형사상들의 분해(factorization)를 연구하였다.

불량주택지역의 주거환경 개선방향에 관한 연구

정갑식,하성태,김병호,유길준 東亞大學校 建設技術硏究所 1999 硏究論文集 Vol.23 No.1

This study is purposed that the poor environment of house search for the ways of its improvements. The investigation was done through knowing the evaluation of the users and researching on the actual conditions concerning the influence or effect on dwelling environment due to its facilities, qualitative and quantitative levels. As a result of analyzation we can see the dwellers’ evaluation for the common facility and that for the housing environments are in very close relation, and the residents have strong wishes for improvement of their housing environments.

응급실에 내원한 자살기도 환자에 관한 연구

김승열,송화식,김갑득,이경규 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4

This study was designed to investigate clinical characteristics and outcome of patient with suicidal attempt. A retrospective analysis by chart review of 130 cases of patients with suicidal attempt who visited emergency department of Dankook University Hospital from January 1998 to December 1998. The results were as follows ; 1. The ratio of patients with suicidal attempt to total patients who visited emergency department was 0.7%. The highest suicidal attempt rates were among aged 20-39. The gender ratio is similar. 2. Suicidal attempt were more common in summer, July, Friday, evening. 3. The most common place of suicidal attempt was home. 4. Drug ingestion was the most common method of suicidal attempt. Drug used for suicidal attempt were agricultural drug including organic phosphorus and carbamate, and therapeutic drug. 5. Common motives of suicidal attempt were marriage conflict, family conflict. 6. The intensity of will to die was more strong in old aged male. 7. Suicidal attempt associated with alcohol drinking was 39.2%. 8. Common symptoms or signs of intoxication were neurological and gastrointestinal.

폐 슬러지를 이용한 Rhodamine B의 생체흡착시 반응특성에 관한 연구

이창한,안갑환,송승구 한국환경과학회 2004 한국환경과학회지 Vol.13 No.7

The properties of biosorption of dve(Rhodmine B) was investigated to figure out the effects of temperature as a function of dye concentration and sludge concentration by the Langmuir and Lagergen adsorption model. It was found that the uptake capacity of biosorption was increased at low temperature. The Langmuir adsorption model was found suitable for describing the biosorption of the dye. The experimental results indicated that the dye uptake process followed the pseudo-first-order kinetics.

역유동층 반응기와 삼상유동층 반응기를 이용한 유기물 제거에 관한 연구

박영식,안갑환,추석열,서근학,송승구 부산대학교 1995 生産技術硏究所論文集 Vol.48 No.-

구형의 섬유상 플라스틱을 media로 사용하여 3상 유동층 생물막 반응기와 역유동층 생물막 반응기로 유기물 제거효율을 비교 실험하였다. 유입수의 SCOD가 1800㎎/L였을 때 역유동층 생물막 반응기와 3상 유동층 생물막 반응기의 제거효율은 각각 94%, 92.5%였다. 유기물 부하율이 2㎏COD/㎥.day였을 때 역유동층 생물막 반응기의 미생물 농도는 2810㎎/L, 3상 유동층 생물막 반응기의 경우는 2300㎎/L 였다. 반응기 부피, 공기유량, media 형태 및 폐수성상이 모두 같은 조건에서는 두 반응기 모두 유기물 제거효율과 미생물 농도 등에서 거의 비슷한 거동을 나타내었다. A number of experiments were conducted to examine the COD removal efficency and the biomass concentration of the three phase fluidized bed biofilm reactor(TFR) and inverse fluidized bed biofilm reactor(IFR) using fibrous plastic ball and synthetic wastewater. When the influent SCOD was 1800㎎/L, SCOD removal efficiency of IFR and TFR were 94% and 92.5%, respectively. When organic loading rate was 2㎏COD/㎥.day, the biomass concentrations of the IFR and the TFR were 2810㎎/L and 2300㎎/L, respectively. When operated at the same conditions on reactor volume, air flow rate, media type and wastewater characteristic, two reactors showed a very similar performance.

二次 函數 Qc(χ) = χ²+ c의 混沌

한정훈,양승갑,조성훈 명지대학교 자연과학연구소 1995 자연과학논문집 Vol.12 No.-

본 논문의 목적은 이차함수 Qc(χ)=χ²+c 에 관한 주기점들의 주기적 성질을 연구하는데 있다.특히 c<-2일때 주기검의 형태를 연구하였고, 실제로 혼돈역학계를 설명하여 이차함수 Qc(χ)=χ²+c의 주기점들의 움직임이 혼돈역학계를 이루고 있음을 보였다. The purpose of this paper is to study of the periodic properties of the periodic points of the quadratic function Qc(χ)=χ²+c. In particular, we investigate the forms of the periodic points whenever c<-2.Actually, we describe the chaotic dynamical systems and show that the behavior of the periodic points of the quadratic function Qc(χ)=χ²+c(c<-2)is the chaotic dynamic systems.

Jahn의 Turnen이 現代 器械體操에 미친 影響

정삼현,배정하,서승유,김규환,이동갑,하정호 東亞大學校 附設 스포츠科學硏究所 1997 스포츠科學硏究論文集 Vol.15 No.-

Among the school gymnastics facilities, perhaps the most common ones are gymnastics apparatus. That's why a historic study in the event of havy gymnastics is required. The researchers here have examined the origin of gymnastics with apparatus centered on Jahn's "turen" exercise. The results are as follows : 1. Heavy gymnastics originally contained a lot of elements from field and track events. It had aims of obtaining natural physical movement and enhancing work efficiency. 2. An outdoor event turnen was banned and changed into an inddor event. The fact that apparatus gymnastics is nowadays held indoors reveals the decisive influnece of Jahn's turnen exercise. 3. Jahn's balance beam exercise was at first played for the purpose of blancing oneself and merely for fun. It has developed into the present from through wide distribution and elaboration. 4. Jahn first used the term of parallel bars and the present women's event of parallel bars resembles Jahn's. 5. Jahn's horizontal bars have also had a great effect on today's event of horizontal bars.

이족로봇의 경사면 균형 유지와 보행에 관한 연구

오성남,윤동우,손영익,김갑일,임승철,강환일 명지대학교 산업기술연구소 2007 産業技術硏究所論文集 Vol.26 No.-

This paper aims to provide a way to improve dynamic stability of biped robots against undesirable disturbances and in a slope. By using an angular velocity sensor and an acceleration sensor on its waist, we can make a medium-sized biped robot walk stably in a slope against impulsive disturbances. In addition, it is possible for the robot to walk stably in an unknown slope. The measured signals from the sensor are used for compensating the reference angles of ankle, knee, and pelvis joints. Some experiments show that the stability of the robot is much enhanced by using cheap sensors and a simple algorithm. This work helps biped robots walk more stably in real environments.