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장남은(Nam-Eun Jang),김남국(Nam-Kuk Kim),이윤섭(Youn-Seop Lee),김용태(Youg-Tae Kim),신관우(Kwan-Woo Shin) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
Several universities in Korea are beginning studies related to soft stamping processes but since the studies are done with manual works thus systematic tests can't be performed due to difficulties in producing reproducible and repeatable fine patterns. Therefore, the phenomenon of destruction of the pattern forms of elastic polymers occurred during working because of inconsistent printing pressures and printing time and there have been difficulties in maintaining flatness or producing uniform and fault-free fine structures in printing large areas and also, there have been difficulties in multi-layered processes as patterns were changed by contacts in registering and errors in alignments. The purpose of development of this technology is to improve the process of soft lithography so that contacts between PDMS stamps and metal coated substrates in order to develop a stamp printing device that can n at only shorten but also optimize processes, secure re producibility and repeatability and is advantageous in printing large areas. Also, using this technology, this author is to develop equipment technologies and applie d technologies for nano grade pattern printing processes with new concepts based on fine contact printing processes in order to apply them to diverse nano patterning processes.
장결핵의 조기 진단을 위한 대장 내시경적 검사의 유용성
황기은(Kie Eun Hwang),장남수(Nam Soo Jang),박창영(Chang Young Park),임시영(Si Young Lym),김병익(Byung Ik Kim),전우규(Woo Kyu Jeon),정을순(Eul Soon Jung),이상종(Sang Jong Lee) 대한소화기학회 1997 대한소화기학회지 Vol.29 No.4
N/A Background/Aims: Tuberculosis is a well-known disease as manifested by multi-organ involve- ment. Although the incidence of tuberculosis has reduced recently because of the advance of anti-tuberculosis chemotherapy, improvement of public health, and early diagnosis, it is still higher in developing countries. However, intestinal tuberculosis escapes early diagnosis due to its infrequency, vague manifestation, and difficulty in confirming the disease process. The advent of flexible colonoscopy has provided an opportunity to confirm the diagnosis of intestinal tuberculosis but the biopsy results were frequently false negative. Another difficulty encountered in confirming the diagnosis of intestinal tuberculosis by endoscopy was the frequent failure to Mycobacterium culture from tissue. Therefore, we examined histopathologic feature, acid-fast stain, and Mycobacterium culture with tissue section obtained by co]onoscopy at the same time. Methods: We studied and analyzed 118 cases of intestinal tuberculosis that was suspected by clinica] features and colonoscopic gross findings from January 1, 1991 to December 31,1995. All cases used an acid-fast stain with a tissue section obtained by colonoscopy. Results: We found 37 cases of caseous necrosis or granuloma (42%) and found 58 cases of AFB stain positivity (60%), and 12 cases of Mycobacterium culture positivity (14%) in 93 cases of intestinal tuberculosis. Conclusions: This study suggests that early diagnosis of intestinal tuberculosis will be much improved by histopathologic feature, tissue AFB stain obtained by colonoscopic tissue biopsy. (Korean J Gastroenterol 1997;29:449-456)
신관우(Kwan-Woo Shin),김용태(Yong-Tae Kim),장남은(Nam-Eun Jang),이윤섭(Yoon-Seob Lee) 제어로봇시스템학회 2010 제어로봇시스템학회 각 지부별 자료집 Vol.2010 No.12
There are various ways to improve output efficiency of photovoltaic system such as raising solarcell’s own efficiency, raising efficiency of photovoltaic system by controlling efficiency of electricity conversion system for photovoltaic control system and controlling MPPT(Maximum Power Point Tracking), tracking method by vertical incidence of the Sun to solarcell module. This study proposed the tracking system and algorithm that uses solarcells, instead of sensors, to track solar location. This study used the proposed tracking device to measure the efficiency of photovoltaic system by tracking solar location, and verified its benefits as a result.
자간전증 환자에서 증가된 산화적 스트레스가 신생아의 체중에 미치는 영향
김영주 ( Kim Yeong Ju ),박혜숙 ( Park Hye Sug ),박미혜 ( Park Mi Hye ),김우경 ( Kim U Gyeong ),박은애 ( Park Eun Ae ),하은희 ( Ha Eun Hui ),홍윤철 ( Hong Yun Cheol ),장남수 ( Jang Nam Su ),박명걸 ( Park Myeong Geol ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.4
Objective: To assess the maternal circulating levels of homocysteine, the thiobarbituric acid reactive substances (TBARS) and the glutathione peroxidase (GPX) activities, and to determine whether or not these markers have any effect on the neonatal birth
直接螢光抗體法에 依한 고양이의 Toxoplasma 感染 樣相에 關한 調査 硏究
張南植,羅榮彦,李英河,辛大煥 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.1
A study on the direct fluorescent antibody test using the several organ tissues and stamp smear of domestic cats which are the final and favorate host of Toxoplasma gondii, was performed. The organ tissue used was prepared in 6-8μm thickness by frozen section at -20℃ and stamp smear sample was prepared by smear wet mounting. Fluorescein isothiocyanate(FITC) conjugates was diluted by 4 fold, 1:4, 1:16, 1:256 in phosphate buffer saline (PBS, pH 7.2). A total of 35 domestic cats which is being commerced in Jungang domestic animal market, Taejeon, was examined. The results obtained were summarized as follows; 1. Fluorescent zone of Toxoplasma was mainly part of below microtubuel and cell membrane. 2. Fluorescent reaction was no-fluorescent and non-specific reaction in under the titer 1:4, and in over the titer it was reacted in 16 samples of the tissue organ, 4 sample s of smear. 3. Positive rate of tissue specimen was 8.6% in liver, 5.8% in spleen, lung heart respectively, 2.9% in lymph node. 4. Positive rate of stamp smear specimen was 2.9% in liver, spleen lung, respectively. 5. Among 35 domestic cats, infected domestic cats were indentified to 5 domestic cats, corresponding to 14.3%.
김경수,박창영,박정로,김향,이상종,정을순,유종현,황기은,장남수,편유장,전우규 대한소화기학회 1998 대한소화기학회지 Vol.31 No.1
Ischemic colitis is a well-known disease entity. It is caused by inadequate tissue perfusion secondary to either occlusive or nonocclusive conditions which result in relative hypoxia of the colon. Mostly the cl.inical course is transient and self-limiting, but less commonly it may show fulminant transmural necrosis necessitating surgical manipulation. Recently, we have experienced three patients who complained of acute cramping abdominal pain and bloody diarrhea. On colonoscopy, the descending, sigmoid, and rectosigmiod colon showed hyperemic mucosae with petechiae alternating with pale area, the margins of which were sharply demarcated. Well-defined superficial ulceration was also present. Microscopically, the colonic mucosae of three patients revealed congestion, hemorrhage, hemosiderin-laden macrophages, coagulation necrosis, and fibrinous thrombus in the lamina propria, which were compatable with ischemic colitis of acute and/or healing phase. After conservative treatment with antibiotics and electrolyte correction for two weeks each, the colonic mucosae were nearly completely healed on follow-up examination. Above clinical, colonoscopic and histopathologic features were well compatible with transient ischemic colitis in all patients. We report three cases of transient ischemic colitis those were successfully treated with conservative management.
박창영,이상종,김병익,정을순,김기택,성기철,전경홍,황기은,장남수,편유장 대한소화기학회 1998 대한소화기학회지 Vol.30 No.2
Background/Aims: The term, carcinoid, is derived from $quot;Karznoid$quot; coined by Oherndorfer in 1907, which means carcinoma like lesion with no malignant potential. However, it is now generally accepted that these innocuous neoplasms potentially can produce widespread metastasis. Although the carcinoid tumor is relatieve]y rare, it continue to be of special clinical interest because of the endocrine potential, the malignant potential and the recent appearance of the composite carcinoma-carcinoid tumor. Methods: We reviewed the recorded clinical rnanifestations of twenty-two patients with carcinoid tumor, which had been treated from the Kang Book Samsung Hospital for 17 years frorn August 1979 to Septernher 1996. Results: The peak incidence was in the 5th decade occup- ying 9 cases(42%) and male predominence with a ratio of 2.1:1. The common site of the tumors was the rectum(8 cases) and appendix(5 cases). The incidence ot' carcinoid tumors according to the embryologic origin were foregut 6 cases(27%), midgut 7 cases(32%), hindgut 9 cases(41%). The hepatic metatasis was presented in 3 cases. There was no case with classic carcinoid syndrome. Thirty-two percent cases had carcinoma with carcinoid tumor, and nine percent cases had malignant carcinoid tumor. Conclusions: Comparing the age and tumor location, some difference was observed between 22 cases carcinoid tumor experienced at our hospital and those of foreign studies, but other difference was not observed.