공무집행 중 발생한 주한미군범죄와 「한・미 SOFA」에 따른 경합적 형사재판권에 관한 고찰

김성진(Kim, Sung-Jin),최우선(Choi, U-Son) 중앙대학교 법학연구원 2021 法學論文集 Vol.45 No.1

미국은 해외 각국에 군대를 파견하면서 미군의 주둔을 접수하는 국가와 소위 주둔군지위협정(SOFA)을 체결한다. 이러한 주둔군지위협정에는 미군과 그 구성원들의 형사재판권에 관한 내용을 규정으로서 파견국과 접수국 간의 형사재판권에 대한 우선순위를 규정하고 있다. 예를 들어 주한미군지위협정(이하, 한·미 SOFA)에서는 미국 군대의 구성원이 공무집행 중 고의 또는 과실로 저지른 범죄에 대해서는 미군당국에게 1차적 현사재판권을 부여하고 있다. 이에 대한민국은 미군당국에게 공무 중 발생한 미군범죄에 대한 1차적 형사재판권을 양보할 것을 요구하고 있지만 이를 거부하고 있다. 그러나 한·미 SOFA는 대한민국의 사법권을 대체하는 협정이 아니라 대한민국의 사권법 내에 존재하는 것이다. 따라서 범죄혐의를 받고 있는 미군은 대한민국의 형사사법에 따라 수사와 재판을 받는 것이 타당하다. 다만 형사재판권이 경합하는 경우에는 해당 범죄가 공무 중 발생한 경우에 한하여 미군당국이 1차적 재판권을 행사할 수 있도록 하는 것이 바람직하다. 지금까지 미군당국은 대한민국과 형사재판권이 경합되는 미군범죄 사건에 대하여 대한민국 수사기관의 수사협조 요청에 매우 소극적인 태도를 보이고 있다. 하지만 미군당국은 한·미 SOFA 제22조 제6항에 명시되어 있는 대로 미군범죄에 대한 대한민국 수사기관의 수사에 보다 적극적으로 조력하여 할 것이다. 또한 한·미 SOFA에 따라 미군당국이 공무중 발생한 범죄에 대하여 1차적 형사재판권을 부여받고 있더라도, 대한민국 사법부가 해당 범죄를 중대한 범죄라고 판단하는 경우에는 대한민국은 미군당국의 ‘공무증명서’ 발급에 대하여 한·미 SOFA 제22조 제6항에 명시된 이의 제기권을 행사할 필요가 있다. One of the most controversial issues of SOFA that every countries concluded with the U.S. is the question of what constitutes an act or omission done in the performance of official duty. The ROK-U.S SOFA also includes the same provisions and hence, the same controversy: U.S military authorities have primary right to exercise jurisdiction over U.S armed forces members in relation to offenses arising out of any act or omission done in the performances of official duty. The ROK-U.S is based on two types of jurisdiction, exclusive and concurrent. An identical framework is found in the NATO SOFA. Article XXII of the Korea SOFA provides that the U.S. military authorities have the right to exercise exclusive jurisdiction over members of U.S. armed forces with respect of offenses, including offenses relating to its security, punishable by the law of the United States, but not by the law of the Republic of Korea. This exclusive jurisdiction applies to Korea authorities in the same way respect to offenses by the U.S service members that are punishable by Korean law but not by U.S. law. In cases where the right to exercise jurisdiction is concurrent, the authorities of Korea have primary jurisdiction, but an exception exists in relation to offenses committed solely against the property or security of the United States or solely against another U.S. armed forces member, and offenses arising out of any act or omission done in the performance of official duty. Generally, a country with is more interested in offenses committed than the other in an effort to have primary right to exercise. If the offenses committed solely against the property or security of the sending state, receiving state in fact wouldn t be interested in indicting those offenses. On the other hand in line with territorial principle, Korea will have the primary right to exercise the jurisdiction. This article will analyze the official duty that sending state always trying to have the primary right to exercise, causing inevitably friction with host nation in terms of the concurrent jurisdiction para 3, art 22 in ROK-U.S. SOFA rather than the inequality and fairness of SOFAs, which every host nations have concluded with the U.S. It will also recommend the resolution to minimize the friction between ROK and U.S. in satisfying both nations as they exercise the criminal jurisdiction in a way of clarifying the official duty certification and in standard, limit, analysis about an official duty.

Zigzag strip bundles and crystals

Kim, J.A.,Shin, D.U. Academic Press 2013 Journal of combinatorial theory. Series A Vol.120 No.5

We introduce new combinatorial models, called zigzag strip bundles, over quantum affine algebras U<SUB>q</SUB>(B<SUB>n</SUB><SUP>(1)</SUP>), U<SUB>q</SUB>(D<SUB>n</SUB><SUP>(1)</SUP>) and U<SUB>q</SUB>(D<SUB>n+1</SUB><SUP>(2)</SUP>), and show that the sets of all zigzag strip bundles for U<SUB>q</SUB>(B<SUB>n</SUB><SUP>(1)</SUP>), U<SUB>q</SUB>(D<SUB>n</SUB><SUP>(1)</SUP>) and U<SUB>q</SUB>(D<SUB>n+1</SUB><SUP>(2)</SUP>) realize the crystal bases B(~) of U<SUB>q</SUB><SUP>-</SUP>(B<SUB>n</SUB><SUP>(1)</SUP>), U<SUB>q</SUB><SUP>-</SUP>(D<SUB>n</SUB><SUP>(1)</SUP>) and U<SUB>q</SUB><SUP>-</SUP>(D<SUB>n+1</SUB><SUP>(2)</SUP>), respectively. Further, we discuss the connection between zigzag strip bundle realization, Nakajima monomial realization, and polyhedral realization of the crystal B(~).

위장관계 악성종양에서 CA 125 측정의 의미

장우익 ( Jang U Ig ),안강현 ( An Gang Hyeon ),이종인 ( Lee Jong In ),김현수 ( Kim Hyeon Su ),김효열 ( Kim Hyo Yeol ),김수경 ( Kim Su Gyeong ),이동기 ( Lee Dong Gi ),배선우 ( Bae Seon U ),심영학 ( Sim Yeong Hag ),강명서 ( Kang Myeo 대한내과학회 1993 대한내과학회지 Vol.44 No.4

연구배경 : 종양표지자는 암외 진단, 임상적 병기구분 및 치료효과 판정에 유용하며, 위장관암에서 alphafetoprotein, carcinoembryonic antigen, CA 19-9, 및 CA 72-4 등이 중요한 지표로 사용되고 있으나 위암의 경우, 현재까지 만족할 만한 유용성을 가진 종양표지자는 없는 실정이다. 저자등은 위암에 대한 새로운 종양표지자로 CA 125의 역할을 규명하고자 위암을 비롯한 각종 위장관암에서 CA 125와 기존의 종양표지자와의 유용성을 검토하였다. 방법 : 대상은 위장관 악성종양 181예, 위장관 양성질환자 55예를 대상으로 하였으며 CA 72-4는 CIS ELSA CA 72-4 RIA kit, CA 19-9는 Abbott CA 19-9 RIA kit, CEA는 Abbott CEA kit, CA 125는 Centocor CA 125 RIA kit를 사용하여 측정하였으며, 각각의 정상치 한계는 4 U/ml, 37 U/ml, 5ng/ml그리고 35 U/ml로 하였다. 결과 : 1) CA 125는 양성 소화기 질환에서 93%의 높은 특이도를 보였으나 복수가 있는 간경변증의 경우 거의 전예에서 혈중 CA 125값이 증가하여 악성종양군과 감별이 어려웠다. 2) CA 125는 위암에서 민감도가 36%로 CA 72-4와 차이가 없었다. 3) CA 125는 췌담도암에 대한 민감도가 55%로 CA 19-9의 85%에 비해 낮았으며 두 종양표지자를 병합하여 사용한 경우 민감도의 증가(95%)를 볼 수 있었다. 4) 23예의 조기위암 환자에서 CA 125의 민감도는 9%로 낮았다. 5) Conventional image study 상으로 인지되지 않은 복강내 암종증 환자에 대한 CA 125의 민감도는 36%였다. 결론 : CA 125는 위암에서 기존의 종양표지자인 CA 72-4와 유용성의 차이를 보이지 않았으며 전이성 위암에서 높은 민감도를 나타내었다. 혈중 CA 125의 증가는 위장관의 악성 및 양성질환에 관계없이 복수의 유무와 밀접한 연관관계를 가지는 것으로 사료되며 통상적인 영상 진단법상으로 인지되지 않은 복강내 암종중의 예견에 있어서는 유용하지 않을 것으로 생각된다. Background: Detection of tumor markers could offer an accessible method for screening risk groups in order to achieve an early diagnosis of cansers, to contribute to and adequate staging, and to help evaluate effects of therapy. CA 125 is an antigenic determinant defined by murine monoclonal antibody OC 125, and synthesized by coelomic epithelial derivatives such as Mullerian epithelium and mesothelial tissues. CA 125 is regarded as useful tumor marker for non-musinous epithelial ovarian tumors. So we investigated whether CA 125 is reliable tumor marker for gastrointestinal malignancies and especially for detection of intraperitoneal carcinomatosis unrecognized by conventional imaging studies. And we compared CA 125 with other conventional tumor markers in the serodiagnosis of gastrointestinal malignancies. Methods: Serum CA 72-4, CA 19-9, CA 125 and CEA were determined radioimmunologically with monoclonal antibodies. A cut-off value of 4 U/ml, 37 U/ml, 35 U/ml and 5 mg/ml were used respectively. Results: The results are summarized as follows. 1) CA 125 had high specificity (93%) for benign gastrointestinal disease but was not useful to differetiate malignant ascites and benign ascites. 2) In gastric carcinoma, the sensitivity of CA 125 (36%) was not so different to that of CA 72-4(36%). 3) In pancreatobiliary carcinoma, the sensitivity of CA 125(55%) was inferior than that of CA 19-9 (85%), but combined use of these two tumor markers increases sensitivitu(95%) for the diagnosis. 4) The sensitivities of CA 125 for 23 early gastric cancer was 9%. 5) The sensitivities of CA 125 for the intraperitoneal carcinomatosis that was not recognized by conventional imaging studies was 36%. Conclustion: Our data indicates that CA 125 is not better in the serodiagnosis of gastrointestinal malignancies than other conventional tumor markers, and CA 125 has a little predictive value in the diagnosis of intraperitoneal carcinomatosis unrecognized by the conventional imaging studies. Serum CA 125 elevation in benign or malignant diseases closely correlated with the presence of ascites.

Ce$O_2$첨가 및 분말처리가 U$O_2$ 분말의 소결에 미치는 영향

김형수,이영우,최창범,양명승,전풍일,Kim, Hyeong-Su,Lee, Yeong-U,Choe, Chang-Beom,Yang, Myeong-Seung,Jeon, Pung-Il 한국재료학회 1993 한국재료학회지 Vol.3 No.3

순수 $UO_2$에 첨가량 변화 및 ball-milling 시간에 따른 (U, Ce)$O_2$ 분말의 특성과 각 조건별로 제조된 분말을 압분 및 소결하여 (U, Ce)$O_2$ 분말 특성에 따른 소결성을 비교 조사하였다. 실험 결과로 부터 ball-milling시간이 길어짐에 따라 입자들은 미세화되고, Ce$O_2$ 함량이 증가할수록 압분, 소결밀도는 저하 하였으며, $CeO_2$는 소결성을 저하시키는 산화물임을 확인하였다. 10wt%,$CeO_2$ 가 첨가된 (U, Ce)$O_2$ 분말의 경우, ball-milling 4시간 수행한 분말의 소결체가 기공의 수도 적고, 구형에 가까왔으며, 소결밀도가 가장 높았다. 이는 4시간 ball-milling한 (U, Ce)$O_2$분말이 비표면적이 크로 그의 packing ratio가 적절하였기 때문이다. We investigated the changes of (U, Ce)$O_2$ powder characteristics with $CeO_2$ contents and ball-milling time and then studied on the sintering properties with those (U, Ce)$O_2$ powder characteristics. From the results of this study, it was concluded that the longer ball-milling time of (U, Ce)$O_2$ powder was, the finer its particle size was. Green and sintered densities were decreased with $CeO_2$ contensts increase. And also $CeO_2$ was recongized deteriorating oxide on the $UO_2$ sintering. In case of the lOwt. % $CeO_2$ contents, (U, Ce)$O_2$ sintered pellet which was made of ball-milled powder for 4 hours had few pores and its pores got near to the sphere. And its sintered density had the highest. Because its powder had higher surface area and its packing ratio was appropriated much better than others.

일제강점기 김옥균의 초상

김현우(Kim, Hyeon-u) 한국양명학회 2018 陽明學 Vol.0 No.49

김옥균은 한국 근대기 비극적 삶을 산 개혁가이다. 그 후 사람들은 김옥균을 자신의 입장에서 묘사하기 시작했다. 신채호는 김옥균의 개화사상을 한국 전통의 대표적인 개혁가인 박규수·박지원과 연결시켰다. 신채호는 한국이 주체적으로 문명을 수입해서 독립할 수 있다는 것을 강조했기 때문이다. 한편, 일본에서는 김옥균을 일본의 메이지유신의 모델로 보고 갑신정변의 당위성을 설파했다. 즉 대륙침략 이론인 대동아공영을 확산시키기 위해 김옥균을 제국주의 일본의 가치관 속에서 해석했던 것이다. 친일파들도 이와 유사하게 김옥균을 일본과 연결시켰다. 그들은 일본의 한국 지배를 정당화하는데 김옥균을 동원했던 것이다. 반면 민족주의자 안재홍은 김옥균의 스승인 유홍기를 불교 신자가 아닌 천주교 신자로 묘사했다. 그는 김옥균 개혁론의 근원을 전통도, 일본도 아닌 보편적 세계사의 관점에서 보았기 때문이다. 이처럼 김옥균의 비극적 삶은 사후 여러 편의 신화로 가공되었다. 그 속에는 식민지 한국에서 진행되는 일본식 문명관에 대한 강한 비판도 있었다. 현대 우리사회는 새로운 문명 즉 “4차 산업”으로 들어가고 있다. 4차 산업혁명시대도 이전 산업혁명과 마찬가지로 인간과 문명 간의 새로운 관계가 정립되어야 할 것이다. 그런 점에서 일제 강점기 문명에 대한 수용과 비판의 산물인 김옥균의 초상들은, 인공지능·초연결사회·사물인터넷·로봇공학 등을 통해 점차 확장되는 4차 산업시대에 있어서, 인간과 문명에 대한 깊은 시사점을 줄 것이다. Kim Ok Gyun is a reformist to have lived a short and tragic life in Korea modern times. And then people began portraying him from a few versions. Shin Chae Ho, who is a representative fighter for Korea independence, matched him to Park Gyu Su and his grandfather, Park Ji Won, were all Korea traditional reformers. Because he intended to conform that Korea could be independent by himself. Japan portrayed that he led Gapsin Coup modeling the Meiji Restoration in Japan. Japan need someone foreign to propagandize and spread out her policy of Greater East Asia Co-Prosperity Sphere. Kim was almost the only foreigner. Pro-Japanese group in Korea, matched him to Japan. Because they tried to justify Japan’s Ruling. But An Jae Hong of a nationalist described that he was influenced by just Catholic of the western not Japan to write his teacher of Yu Hong Gi a Catholic. Kim’s tragic life was treated in myths. They included criticism of civilization to progress in Korea in Japanese Ruling Era. Those were all philosophical considerations on civilization. Meanwhile, we now face a kind of civilization, the Fourth Industry. We need to define the new relation between human and civilization in this time. So, it is still valid for philosophical considerations on civilization which appeared in Korea modern times.

과아밀라제혈증을 동반한 갈색세포종

김소양 ( Kim So Yang ),김지훈 ( Kim Ji Hun ),김창환 ( Kim Chang Hwan ),남순우 ( Nam Sun U ),김윤정 ( Kim Yun Jeong ),김진일 ( Kim Jin Il ),박수헌 ( Park Su Heon ),한준열 ( Han Jun Yeol ),김재광 ( Kim Jae Gwang ),정규원 ( Jeong Gyu 대한소화기학회 2003 대한소화기학회지 Vol.42 No.2

Pheochromocytoma, a catecholamine-producing tumor of the chromaffin tissue, may present with various features. Herein, we report case of 66-year-old woman with pheochromocytoma accompanying hyperamylasemia and acute abdomen. She was admitted to another hospital due to myocardial infarction 5 months ago. At that time, pheochromocytoma was suggested on the basis of hormonal studies, but she refused surgical resection. When she came to our hospital, serum amylase level was 703 U/L. Subsequent studies revealed pancreatic type isoenzyme, and elevated lipase level. After normalization of serum amylase level, she undertook laparoscopic adrenalectomy. On pathologic examination, pheochromocytoma was confirmed. There are several cases of pheochromocytoma with hyperamylasemia. In general, the source of hyperamylasemia was thought to be pulmonary endothelial cells under ischemic damage caused by potent vasoconstrictive action of circulating catecholamines. In our case, analysis of isoenzymes and serum lipase level suggest that hyperamylasemia can originate from the pancreas. Thus, pancreatitis also should be considered when serum amylase level is elevated in pheochromocytoma. (Korean J Gastroenterol 2003;42:172-175)

위장관암 환자에서 혈청 CA 72-4, CA 19-9 및 CEA의 진단적 의의

장우익 ( Jang U Ig ),김철한 ( Kim Cheol Han ),김현수 ( Kim Hyeon Su ),이종인 ( Lee Jong In ),이동기 ( Lee Dong Gi ),권상옥 ( Kwon Sang Og ),심영학 ( Sim Yeong Hag ),김대성 ( Kim Dae Seong ),윤갑준 ( Yun Gab Jun ),장세진 ( Jang Se 대한내과학회 1992 대한내과학회지 Vol.42 No.6

연구배경 : 종양표지자는 암의 조기진단, 임상적 병기 구분 및 치료효과 판정에 사용될 수 있다. 위장관암에서 alpha-fetoprotein, carcinoembryonic antigen 및 CA 19-9가 중요한 종양표지자로 사용되고 있으나 위암에 대한 적당한 종양표지자가 없는 실정이다. 이에 저자등은 위암에 대한 새로운 종양표지자로 CA 72-4의 역할을 규명하고자 위암을 비롯한 각종 위장관암에서 CA 19-9 및 CEA를 동시 측정하여 비교하였다. 방법 : 대상은 위장관 악성종양환자 273예, 위장관 양성질환자 215예 및 정상대조군 93명이었으며, CA 72-4는 CIS ELSA CA 72-4 RIA kit, CA 19-9는 Abbott CA 19-9 RIA kit 그리고 CEA는 Abbott CEA RIA kit를 이용하여 측정하였으며, 각각의 정상 상한치는 4 U/ml, 37U/ml 그리고 5ng/ml로 하였고 다음과 같은 결과를 얻었다. 결과 : 1) CA 72-4, CA 19-9 및 CEA의 평균치는 악성종양군에서 정상대조군이나 양성질환군보다 높았다(p<0.05). 2) CA 72-4는 장기별 양성질환에서 95~100%의 높은 특이도를 보였으나 CA 19-9는 담도질환에서 54%, CEA는 간장질환에서 63%로 CA 72-4에 비해 낮은 특이도를 보였다. (p<0.05). 3) CA 72-4는 위암에서 민감도가 49%로 CEA(31%) 및 CA 19-9(31%)보다 높았다(p<0.05). 4) CA 72-4는 췌장암 및 담도암에서 민감도가 각각 43%, 44%로서 CA 19-9(각각 79%, 87%)보다 낮았으며 (p<0.05), 대장암에서도 35%로 CEA(74%)보다 매우 낮았다(p<0.05). 5) 8예의 조기위암환자 전예에서 CA 72-4를 비롯한 CA 19-9 및 CEA가 모두 음성이었다. 6) 위암에서 림프절 전이 유무에 따른 CA 72-4의 차이는 없었으나, 원격 전이가 없는 환자군(10%)에 비해 원격전이군(77%)에서 현저하게 높은 양성률을 보였다(p<0.05). 7) 위암의 병기별 CA 72-4의 분포는 4병기에서 83%로 1병기(7%), 2병기(8%) 및 3병기(13%)보다 현저히 높았다(P<0.05). 8) 근치적 위절제술을 시행한 5예의 위암환자에서 수술후 CA 72-4치가 정상 상한치 이하로 감소하였고 항암 약물요법에 반응을 보였던 4예의 진행성 위암환자에서도 약물치료후 현저한 감소가 있었다. 9) CA 72-4는 전이성 대장암 및 췌장암에서 국소 및 국소진행성 대장암 및 췌장암에 비해 현저히 높은 양성률을 보였다. 10) 위암환자에서 CA 72-4와 CA 19-9 또는 CA 72-4와 CEA사이의 상관관계는 없었다. 결론 : 이상과 같이 CA 72-4는 위암에서 CA 19-9 및 CEA 보다 높은 민감도를 보였으며 특히 4병기 위암에서 현저히 높은 민감도를 보이는바 CA 72-4가 양성인 경우 치료방침을 결정하는데 신중한 고려가 필요할 것으로 생각된다. 또한 CA 72-4는 위암에서 수술 혹은 항암 약물 요법의 치료 monitoring에 적절히 사용될 수 있는 종양 표지자로 생각된다. 또한 각종 위장관 질환에서 CA 72-4는 기존의 종양표지자에 비해 높은 특이도를 보이는바 CA 72-4가 양성인 경우 항상 악성종양의 가능성을 고려하여야 한다. Background: Detection of tumor markers could offer an accessible method for screening risk groups in order to achieve an early diagnosis of cancers, to contribute to an adequate staging, and to help evaluate effects of therapy. Alpha-fetoprotein, carcinoembryonic antigen and CA 19-9 are regarded as valuable tumor markers for gastrointestinal cancers. But in spite of the high incidence of gastric cancer in Korea, ideal tumor markers for gastric ancer have proved unrelible. So we investigated whether new tumor marker CA 72-4 is a reliable tumor marker for gastric cancer. And we compared CA 72-4 with CA 19-9 and CEA in the serodiagnosis of gastrointestinal cancers. Methods: Serum CA 72-4, CA 19-9 and CEA were determined radioimmunologically with monoclonal antibodies. A cut-off value of 4 U/ml, 37 U/ml and 5 ng/ml were used, respectively. Results: The results are summarized as follows. 1) The mean value of 72-4, CA 19-9 and CEA in malignant diseases were significantly higher than those of the benign digestive diseases (p<0.05). 2) CA 72-4 had high specificity ranged from 95%-100% in benign digestive disease groups but CA 19-9 (54%) had lower specificity in cholelithiasis(p<0.05) and CEA (63%) in benign liver diseases (p < 0.05). 3) In gastric carcinoma, the sensitivity of CA 72-4 (49%) was higher than that of CA 19-9 (31%, p<0.05) and CEA (31%, p<0.05). 4) The sensitivities of CA 72-4 was inferior to CA 19 -9 in pancreatic cancer (43% versus 79%, p<0.05) and in bile duct cancer (44% versus 87%, p<0.05) and to CEA in colon cancer (35% versus 749& p<0.05). 5) Eight of 45 resected gastric carcinoma patients had TI lesion (early gastric cancer), and CA 72-4, CA 19-9 and CEA were demonstrated all negative results for early gastric cancer. 6) In gastric carcinoma, there was no correlation between CA 72-4 positivity and occurrence of lymph node metastasis but significant difference of CA 72-4 positivity was observed between those with distant metastasis and those without metastasis(p<0.05). 7) The positive ratings in stages Ⅰ, Ⅱ, Ⅲ, and Ⅳ gastric carcinoma were 7% (1 of 14 patients), 8% (1 of 12 patients), 13% (2 of 16 patients), and 83% (24 of 29 patients) respectively and significant higher CA 12-4 positivity was observed in stage IV gastric carcinoma (p<0.05). 8) Elevated levels of serum CA 72-4 decreased to below the cut-off value after radical gastric resection in five patients with resectable gastric carcinoma and decreased also after chemotherapy in four patients with chemo-responsive metastatic gastric carcinoma. 9) Comparing with local or locally advanced colon cancer and pancreatic cancer, high positivity of CA 72-4 was observed in metastatic colon cancer and pancreatic cancer. 10) No significant correlation was observed between CA 72-4 and CA 19-9 or between CA 72-4 and CEA in gastric carcinoma. Conclusion: In conclusion, our data indicates that CA 72-4 is a reliable new tumor marker of disease stages and activity in gastric carcinoma. And CA 72-4 had a very high specificity in benign digestive diseases, so that elevated serum levels of CA 72-4 should always be taken seriously.

전열관의 굽힘 및 확관접합 잔류응력

장진성,배강국,김우곤,김선재,국일현,김성청,Jang, Jin-Seong,Bae, Gang-Guk,Kim, U-Gon,Kim, Seon-Jae,Guk, Il-Hyeon,Kim, Seong-Cheong 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.2

Residual stress induced in U-bending and tube-to-tubesheet joint processes of PWR's row-1 heat exchanger tube was measured by X-ray method and Hole-Drilling Method(HDM). Compressive residual stresses(-) at the extrados surface were induced in U-bending, and its maximum value reached -319 MPa in axial direction at the position of $\psi$ = $0^{\circ}$. Tensile residual stresses(+) of $\sigma_{zz}$ = 45 MPa and $\sigma_{\theta\theta}$ = 25 MPa were introduced in the intrados surface at the position of $\psi$ = $0^{\circ}$. Maximum tensile residual stress of 170 MPa was measured at the flank side at the position of $\psi$ = $90^{\circ}$, i.e., at apex region. It was observed that higher stress gradient was generated at the irregular transition regions (ITR). The trend of residual stress induced by U bending process of the tubes was found to be related with the change of ovality. The residual stress induced by the explosive joint method was found to be lower than that by the mechanical roll method. The gradient of residual stress along the expanded tube was highest at the transition region (TR), and the residual stress in circumferential direction was found to be higher than the residual stress in axial direction.

실험계획법을 이용한 선박용 벨로우즈의 형상최적화에 관한 연구

김종필(J. P. Kim),김형준(H. J. Kim),김현수(H. S. Kim),조우석(U. S. Cho),제승봉(S. B. Jeo) 한국정밀공학회 2005 한국정밀공학회 학술발표대회 논문집 Vol.2005 No.10월

The mechanical properties of bellows, such as the extensibility and the strength can be changed depending on the shape. For the shipbuilding material, it is favorable that the fatigue life is long due to the elastic property and the reduction of thermal stress in piping system. Nowadays, the domestic production and design of bellows are based on the E.J.M.A Code. Therefore, the design standard is in need because of much errors and lack of detailed analysis. In this study, it is attempted to find out the optimal shape of U-type ship"s bellows that is applied to design of experiment using the finite element method. The effective factors, mountain height, length, thickness, and number of mountains and the length of joint are considered and the proper values are chosen for the simulation. The number of mountains are increased, the volume increases above the standard volume and the stress obviously increases. In addition, the effect of the thickness of bellows on the stress is very large. Both of the volume and stress are decreasing at a certain lower value region.

Downregulation of GFAP, TSP-1, and p53 in human glioblastoma cell line, U373MG, by IE1 protein from human cytomegalovirus

Lee, Karim,Jeon, Kipyoung,Kim, Jong-Mook,Kim, Vic Narry,Choi, Dong Hee,Kim, Seung U.,Kim, Sunyoung John Wiley & Sons, Inc. 2005 Glia Vol.51 No.1

<P>Human cytomegalovirus (HCMV) is a member of the β-herpesvirus family, which has tropism for glial cells. It was recently reported that HCMV might play important roles in the pathogenesis of malignant glioma. In this study, we investigated the effects of the HCMV IE1 protein on the gene expression profile in the human glioblastoma cell line, U373MG by employing cDNA microarray technology. Using DNA chips containing approximately 1,000 human cDNAs, RNA samples from U373MG cells stably expressing IE1 were compared with those from the control cells lacking IE1 cDNA. Fluorescence intensities of 13 genes were significantly decreased in IE1-expressing cells, while one gene was found to be upregulated. Among these 14 genes, we chose to work further on glial fibrillary acidic protein (GFAP), thrombospondin-1 (TSP-1), and p53, because of their previously known involvement in tumorigenesis. The mRNA levels of all these genes were found to be decreased in IE1-expressing glioblastoma cells by real-time quantitative reverse transcription-polymerase chain reaction (RT-PCR) as well as Northern blot analysis. The decreased expression of these genes was also observed at protein levels as measured by immunocytochemistry or fluorescence-activated cell sorting (FACS) analysis. Our data strongly suggested that HCMV IE1 could modulate the expression of cellular genes that might play important roles in the pathogenesis of glial tumors. © 2005 Wiley-Liss, Inc.</P>