췌장의 가성낭종 파열에 의한 하부 위장관 출혈 1예

장성종,김병수,부귀범,김동규,박찬국,김만우,김정용,박상헌 조선대학교 부설 의학연구소 2000 The Medical Journal of Chosun University Vol.25 No.1

Pancreatic pseudocysts usually develop as a complication of acute pancreatitis or repeated attacks of chronic pancreatitis. Pseudocysts may also develop as a result of traumatic injuries or neoplasms. An uncommon complication is massive hemorrhage inside the pancreatic pseudocyst. The exact mechanism of hemorrhage is unknown. Enzymatic digestion, pressure erosion from the cyst mass or a combination of these processes may play an important role. Gastrointestinal hemorrhage associated with a pancreatic pseudocyst can occur in 10 percent of cases. When hemorrhage occurs because of erosion into a blood vessel involved in the pseudocyst, surgery is indicated since the episodes of hemorrhage are often severe and may even be fatal. When there is colonic involvement, various complications may occur. The most dangerous one is spontaneous rupture into the colon, which requires immediate surgical treatment because of high incidence of fulminating sepsis or massive hemorrhage. We examined a sixty eight-year-old man complaining of hematochezia and dizziness, and reported that it was a case of massive lower gastrointestinal hemorrhage caused by pseudocyst of the pancreas ruptured into the colon associated with chronic pancreatitis. On operative findings, the peripancreatic fatty tissue had severe adhesions to transverse colon and tail portion of pancreas, where the pseudocyst had formed. A distal pancreatectomy, splenectomy and resection of transverse colon were performed. By microscopic examination, hemorrhagic necrosis and inflammatory change were observed in the pancreas specimen. The tail portion of pancreas had a 6×6 cm sized cystic mass and was proven to be a pseudocyst with no epithelial lining.

랜덤한 수명주기를 갖는 소프트웨어의 NHPP모형에 기초한 최적방출정책

김상부,김진욱 國立 昌原大學校 産業技術硏究所 1989 産技硏論文集 Vol.3 No.-

새로운 소프트웨어 시스템이 개발되었을 때 개발된 소프트웨어의 오류를 제거하기 위해 미리 정해진 시간까지 시험을 하게된다. 본 논문은 소프트웨어가 랜덤한 수명주기를 갖는 경우 Goel-Okumoto NHPP모형에 기초한 최적 소프트웨어 방출시간을 정하는 문제를 다루었다. 최적화 기준은 전체 기대 이익을 최대화 하는 것이며, 이때 구한 최적방출시간 T가 유한하며 유일함을 보였다.

위장관 출혈을 일으킨 공장의 형활근종 1예

김병수,장성종,부귀범,조운택,박찬국,김만우,변주남,김정용,전호종 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

Small bowel leiomyoma is a rare tumor which may occur wherever smooth muscle is present. The small bowel is the most common site and it makes up 20~30% of all benign small intestinal neoplasms. A spectrum of symptoms are common ranging from nausea, vomiting, abdominal pain, to massive intestinal bleeding. Bleeding is the most common symptom and is usually gross and recurrent. Occasionally it may be life threatening. But, the most serious problem is both the absence of specific clinical symptoms, and the difficulties shown in radiological diagnostics of the small bowel. If conventional diagnostic methods fail to reveal any positive findings for gastrointestinal bleeding, the diagnosis of intestinal leiomyoma should be suspected and an SMA angiography shoud be performed. The angiographic criteria of small bowel leiomyoma is very characteristic. We present a case of leiomyoma with considerable and prolonged gastrointestinal bleeding, which was diagnosed by angiography. A 61-year old woman was admitted with a history of melena over the last 10 days. An SMA angiography showed a hypervascular mass with a diameter of 3×3cm. A segmental resection was performed under the impression of the gastrointestinal bleeding due to leiomyoma of the small bowel. Microscopic examination of the lesion shows interlacing or whorl bundles of spindle shaped ces and no mitosis.

풍력 발전 시스템의 회전익 토오크 모델링

부성환,임종환,허종철,김건훈 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2

급성 지주막하 출혈에 동반된 관상동맥 연축에 의한 심근경색증 1예

부귀범,박근호,양종태,이동민,장성종,김건영,장경식 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

In many cases, acute cerebrovascular disease is accompanied by abnormal electocardiograms. Also, though rather uncommon, acute myocardial infraction is also seen. The mechanism of its occurance is uncertain but it is thought to be related to coronary artery spasms, an abnormal autonomic nervous system, and a catecholamine increase. A female patient of 34 years of age came to the hospital because of sudden headache accompanied by substernal chest pain. A subarachnoid hemorrhage due to a cerebral aneurysm rupture had occured, and there was ST segment elevation in lead II, III, and aVF of the electrocardiogram. A cardiac enzyme test, an echocardiography, and a coronary angiography were performed, and she was diagnosed to have acute myocardial infarction due to coronary artery spasm. Clipping of the aneurysm was performed. With the use of nitrate and an angiotension converting enzyme inhibitor, the condition of the patient improved.

항공기용 가스터어빈 엔진의 재료선정을 위한 DATA BASE 개발

金學奉,林慶鎬,金光培,夫俊洪,柳常新 한국항공대학교 1991 論文集 Vol.29 No.-

본 논문의 목적은 항공기용 가스터어빈 엔진의 재료선정을 위한 데이타 베이스를 구축하는 것이다. 한 엔진설계자가 어떤 엔진요소에 사용 할 재료를 선택한다는 것은 매우 어려운 작업이다. 따라서 수 많은 재료에 대한 정보를 관리 할 수 있는 데이타 베이스가 절실히 요구되고 있으나, 국내에서는 아직 이 방면의 기초연구가 이루어져 있지 않은 실정이다. 온도, 압력, 회전수등 각 부분에서의 작동조건은 다른분야에 의해 제공될 것이다. 본 연구에서는 재료공학적 관점에서 재료의 대표적성질로서 고온강도, 내식성, 내산화성, 항복강도, 열팽창계수, 융점등을 고려해서 후보재료를 선정할 수 있도록 하였다. 이외에도 성형성이나 제조단가등도 고려해야할 변수가 된다. 본연구의 결과 사용자의 편의를 고려한 전산프로그램이 개발되었으며, 이를 이용하여 새로운 재료정보의 입력, 요구 재료선정 및 선정결과의 출력등이 가능하다. 끝으로, 선정된재료에 대한 재료공학적 검토도 실시하였다. The purpose of this study is to develop a data base for material selection of gas turbine engines. Since it is very diffcult task for a design engineer to select materials of adequate properties for specific engine components, a good data base is strongly desired to manage informations on various kinds of materials. However, no basic research is reported in this area so far in our country. The operating conditions such as temperature, pressure, rpm of spools are assumed to be provided by other mechanical studies. Creep rupture strength, corrosion resistance, yield strength, thermal expansion, melting point, etc., are considered as typical properties in this study to search a group of candidate materials. Formability, manufacturing or purchase cost can also be important variables to be considered. As a result of this study, a user-fiendly computer program has been developed for input of new material information, interactive material selection, and output of selection results. Finally, discussion is presented from the viewpoint of materials engineering.

방사선이 마우스 위장관에 미치는 glucagon의 면역조직화학적 영향

김부순,조광호,박상옥 한국위생과학회 2002 한국위생과학회지 Vol.8 No.1

방사선 조사가 위장관 각 부위(위저부, 유문뷰, 십이지장, 공장, 회장, 맹장, 결장 및 직장)에 미치는 영향을 관찰하기 위하여 비교적 방사선에 민감한 strain으로 알려진 C57BL/6 마우스의 위장관 부위에 국소적으로 2 또는 4 Gy의 gamma 선을 조사하여, 8시간 후 위장관의 변화를 관찰하였다. 위장관에 존재하는 내분비세초의 혈 중 glucagon의 수치와 호르몬을 생산하는 내분비세포의 수적 및 분포의 변화를 각각의 항혈청을 이용한 면역조직화적 방법으로 위장관 각 부위에서 관찰하였던 바 다음과 같은 결과를 얻었다. Glucagon 면역반응세포는 정상군을 포함한 모든 실험군에서 위저부에 국한되어 관찰되었으며, 수적 변동은 관찰되지 않았으나, 방사선 조사선량에 비례하여 탈과립을 보이는 세포들의 수적 증가가 인정되었다. 한편 혈중 glucagon함량은 상층 조사군에서만 증가되었으며, 중간층 및 하층 조사군에서는 정상군과 유사한 수치를 나타내었다. 이상에서 방사선 조사 후 내분비세포의 감소는 면역조직화학적으로 염색되는 내분비세포의 과립이 혈 중에 유리된 결과로 생각되며, 다른 인자에 의한 탈과립의 자극보다는 방사선이 직접 면역반응세포에 작용할 것으로 생각되었다. To demonstrate the effect of local gamma irradiation on the gastrointestinal tract of the radiation sensitive C57BL/6 mice strain, the histological profiles of the 8 portions of gastrointestinal tract(fundus, pylorus, duodenum, jejunum, ileum, cecum, colon and rectum) were observed 8 hours after irradiation(subdivided into 3 parts, upper, middle and lower irradiated group). Gastrointestinal endocrine cells were determined by immunohistochemical methods using specific antisera against glucagon with their serum levels by radioimmynoassay(RIA). Glucagon-immunoreactive cells were restricted in the fundus of all tested groups including non-irradiated normal group, similar number of these immunoreactive cells were demonstrated in all tested groups. While increasing of cell numbers showing degranulation were found found dependent with amount of irradiated gamma ray. However, serum glucagon levels increased with amount of irradiated gamma ray in the case of upper irradiated group. In lower and middle irradiated group, no changes of serum glucagon levels were demonstrated in this study. In conclusion, Hormone in blood increased, well corresponding to those of decrease of immunoreactive hormone- producing cells in gastrointestinal tract.

수용성 및 가식성 콩 단백질/�틴 블렌드 필름 제조 및 물성 연구

김성철,신용섭,정세환,유성구,박인식,김봉식,신부영 한국공업화학회 2003 응용화학 Vol.7 No.2

The manufacture of edible/biodegradable films or coatings can potentially add value to soy protein, Such films can find using as edible or nonedible food packaging materials. The effect of soy protein film-forming solutions on film formation, tensile properties of soy protein/pectin blend films were changed significantly by the amount of glycerol and the ratio of soy protein/pectin. Moreover mechanical properties of soy protein/pectin-montmorillonite clay have been studied. Tensile strength and modulus decreases as the relative humidity increased while with increasing relative humidity elongation at break increased.

최대 암에르고미터 운동 시 경험 유·무에 따른 척수 장애인의 환기역치 비교

김태수,김성수,윤성진,황부근,이동희,이강우 한국특수체육학회 2004 한국특수체육학회지 Vol.12 No.3

The purpose of this study was to determine the effect of state for training at the VT using other relative physical factors as like a VT-Sec, VT-VO2peak, VT/VO2peak%, VO2peak, VT-HRpeak, VT/HRpeak%, HRpeak, with individuals with spinal cord injuries. The participants were composed of 7 spinal cord injured wheelchair basketball athletes who are involved with regular activity, 5 spinal cord injured sedentaries who are not involved any regular activity. The statistical procedures used to the analysis were unpaired T-test. The results were as follows; First, the significant differences in VT-Sec, VO2peak were observed between 2 groups. Second, the validity of 44-72VT/V O2peak% and 56.78VT/HRpeak% is suggested as an alternative exercise intensity by individuals with all spinal cord injuries.

체육고등학교 지도자 리더십 유형에 대한 선수들의 인지도와 선호도

김진성,부기원 江原大學校附設體育科學硏究所 2002 江原大學校附設體育科學硏究所論文集 Vol.- No.25

The purpose of this study was to find a teaching medel for each sports and to develop efficient management skill of sports organization, based upon results of the analysis of leadership style and preference according to event, sex, level, school grade. This subject consisted of 455 athletic high school students. For this purpose, the survey was conducted focusing on the leadership scale for sports. The analysis of leadership style was condeucted t-test by event, sex, level and analysis of variance(ANOVA) by school grade. Based upon the results of the study, It was found that 1. The difference of leadership style recognition according to event, athletic in competitive game show a wider difference than athletic in personal game. in addition, it was found that there are a significant difference in training and instruction behavior(p.<.05), democratic behavior(p<.01), social support behavior(p<.001), positive feedback behavior(p<.001). 2.The difference of leadership style recognition according to sex, male athletic show a wider difference than female athletic. In detail, democratic behavior(p<.001), social support behavior(p<.01), positive feedback behavior(p<.05). 3.The difference of leadership style recognition according to level, superior athletic show a wider difference than inferior athletic in all leadership styles. In detail, democratic behavior(p<.05), autocratic behavior(p<.05).4. The difference of leadership style recognition according to school grade, 1st grade students show the widest difference in training and instruction behavior, 3rd grade students show the widest difference in social support behavior. but there is no significant difference. 5. The difference of leadership style preference according to event, athletics in competitive game show a preference in training and instruction behavior, autocratic behavior, social supports behavior and positive feedback behavior. Among them, there are significant differences in autocratic behavior(p<.011), social supports behavior(p<.05).6. The difference of leadership style preference according to sex, male athletic show a wider difference than female athletic in all leadership styles. In detail, there are significant differences in training and instruction behavior(p<.05), autocratic behavior(p<.01), social supports behavior(p<.001), positive feedback behavior(p<.001). 7. The difference of leadership style preference according to level, superior athletic show a wider difference than inferior athletic in all leadership styles. In detail, there are significant difference in democratic behavior(p<.01), positive feedback behavior(p<.05). 8. The difference of leadership style preference according to school grade, 1st grade students show the widest difference in training and instruction behavior, democratic behavior and social supports behavior. 3rd grade students show the widest difference in autocratic behavior and positive feedback behavior. but there is no significant difference. The leadership style recognized by all subjects are training and instruction behavior the first, positive feedback behavior the second, democratic behavior the third and autocratic behavior the last. The leadership styles preferred by all subjects are training and instruction behavior the first, democratic behavior the second, and social supports behavior the third and autocratic behavior the last.