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Case report of a pancreatic squamoid cyst
Dae-Gwang Yoo,Shin Hwang,Dae-Wook Hwang,Ki-Hun Kim,Chul-Soo Ahn,Tae-Yong Ha,Gi-Won Song,Dong-Hwan Jung,Gil-Chun Park,Sung-Gyu Lee 한국간담췌외과학회 2013 한국간담췌외과학회지 Vol.17 No.4
Squamoid cyst of the pancreas is a very rare disease and it has been proposed only recently as a distinct pathologic lesion. We herein present a case of pancreatic squamoid cyst in a patient who underwent laparoscopic resection. A 60-year-old woman had an abdominal computed tomography (CT) scan for a routine check-up, and a multi-cystic lesion of 1.8-cm in size was incidentally found in the tail of the pancreas. Biochemical laboratory tests were within normal limits. At first, we presumed that the most likely diagnosis of the cystic lesion was an intraductal papillary mucinous neoplasm. To treat this lesion, we performed laparoscopic spleen-saving distal pancreatectomy. The patient showed the usual routine postoperative course and she was discharged 10 days after surgery. On examination of the resected specimen, a well-defined, oligolocular cystic mass was found in the pancreatic tail, without a solid portion. Histologic examination revealed that the cysts had linings ranging from flat squamoid cells to transitional cells with non-keratinization. After immunohistochemical staining, the final diagnosis was confirmed to be squamoid cyst of the pancreas. This lesion appears to be regarded as a benign entity, thus an extended operation should be avoided and resection of the lesion can be performed minimally.
차광종(Gwang Jong Cha),송진욱(Jin Wook Song),조홍찬(Hong Chan Jo),김용휘(Yong Hwi Kim),유대열(Dae Yeol Yoo),이중복(Joong Bok Lee),이종기(Jong Gee Lee),유제현(Je Hyun Yoo),Taniguchi Koki 대한바이러스학회 1999 Journal of Bacteriology and Virology Vol.29 No.2
Rotaviruses belong to Reoviridae causes diarrhea in human beings as well as domestic animals. This study was conducted to see what type of human rotaviruses are distributed in Seoul and Kyung-gi province. Twenty two of 81 patients showed rotavirus positive with diagnostic kit and RNA electropherosis. We isolated all of rotaviruses from the patients. Electropherotypes of 22 isolates showed 4:2:3:2 pattern whereas those migration patterns were long type. All of those isolates belonged to group A. Twenty out of 22 isolates reacted with monoclonal antibodies specific to G1, P1A and subgroup II, whereas rest of them, A-29 and K-30 reacted with subgroup I specific monoclonal antibody. The nucleotide sequence of an isolate K-21 showed 98-100% and 90-96% homologies with those of Wa and KU strain, respectively.
Laboratory/In situ Sound Velocities of Shelf Sediments in the South Sea of Korea
Kim, Dae-Choul,Kim, Gil-Young,Jung, Ja-Hun,Seo, Young-Kyo,Wilkens, Roy H.,Yoo, Dong-Geun,Lee, Gwang-Hoon,Kim, Jeong-Chang,Yi, Hi-Il,Cifci, Gunay The Korean Society of Fisheries and Aquatic Scienc 2008 Fisheries and Aquatic Sciences Vol.11 No.2
Compressional sound velocities of shelf sediments in the South Sea of Korea, were measured in situ and in the laboratory for six cores. In situ sound velocity was measured using the Acoustic Lance (frequency of 7.5-15 kHz), while laboratory velocity was measured by the pulse transmission technique (frequency of 1MHz). Physical properties were relatively uniform with sediment depth, suggesting little effect of sediment compaction and/or consolidation. Average in situ velocity at each core site ranged from 1,457 to 1,488 m/s, which was less than the laboratory velocity of 1,503 and 1,604m/s. In muddy sediments the laboratory velocity was 39-47 m/s higher than in situ velocity. In sandy sediments, the difference was greater by an average of 116 m/s. Although the velocity data were corrected by the velocity ratio method based on bottom water temperature, the laboratory velocity was still higher than the in situ velocity (11-21 m/s in muddy sediments and 91 m/s in sandy sediments). This discrepancy may be caused by sediment disturbance during core collection and/or by the pressure of Acoustic Lance insertion, but it was most likely due to the frequency difference between in situ and laboratory measurement systems. Thus, when correcting laboratory velocity to in situ velocity, it is important to consider both temperature and frequency.
락토페린이 국내분리 유아 로타바이러스의 MA 104세포 감염에 미치는 영향
차광종(Gwang Jong Cha),유대열(Dae Yeol Yoo),이종기(Jong Gee Lee),유제현(Je Hyun Yoo) 대한바이러스학회 1999 Journal of Bacteriology and Virology Vol.29 No.2
It has long been known that lactoferrin prevents human beings from infection of virus. To prove this activity of lactoferrin, we evaluated the activities of different lactoferrins to an isolate human rotavirus K-21. Bovine lactoferrin inhibited infection of K-21 to MA-104 cell at the concentration of 25.9 ㎛ whereas bovine hydrolysed lactoferrin prevented rotavirus infection at 103.8 ㎛. However human lactoferrin prevented infection of K-21 at the concentration of 217.5 ㎛. These data suggested that lactoferrin activity may be unaffected by the intestinal digestive enzymes and bovine lactoferrin is more active than human lactoferrin with respect to prevention of rotavirus infection.
한국형 달 궤도선 LUTI 영상의 검보정 현황과 향후 계획
신광수(Shin, Gwang Soo),박대순(Park, Dae Soon),서유경(Seo, Yoo Kyung),서두천(Seo, Doo Chun),임조령(Yim, Jo Ryeong),강금실(Kang, Gm Sil) 한국측량학회 2021 한국측량학회 학술대회자료집 Vol.2021 No.11
한국형 시험용 달 궤도선(KPLO, Korea Pathfinder Lunar Orbiter)은 한국항공우주연구원에서 개발하고 있는 우리나라 최초의 달 탐사 위성이며, 국내외 6개의 과학 탑재체를 장착하게 된다. 특히 국내 탑재체 LUTI(LUnar Terrain Imager)는 단일 채널의 고해상도 카메라이며, 달의 지표면 관측과 주요 관심 지역에 대한 정보 수집 등의 임무를 수행하여 과학적인 분석에 기초 자료로 활용할 계획이다. 이를 위해 위성과 카메라 센서의 특성을 파악하고 위성 영상의 품질과 관련된 파라미터를 식별하고 분석하는 것은 검보정의 주요 작업 중 하나에 해당하며, 이러한 일련의 작업들은 크게 위성 발사 전과 후에 따라 Radiometric, Spatial, Geometric 그룹으로 구분할 수 있다. 본 연구에서는 한국형 시험용 달 궤도선 발사 전, 우주 환경과 유사하게 설계된 실험실 LUTI 영상 자료를 이용하여 보정 파라미터의 초기값을 계산하였다. 또한 한국형 달 궤도선 발사 전과 후에 따른 LUTI 영상에 대한 검보정 작업 현황과 향후 계획에 대해 논의하고자 한다.
Associated Factors for Asthma Severity in Korean Children: A Korean Childhood Asthma Study
Eun Lee,Dae Jin Song,Woo Kyung Kim,Dong In Suh,백혜성,Meeyong Shin,Young Yoo,Jin Tack Kim,Ji-Won Kwon,Gwang Cheon Jang,Dae Hyun Lim,Hyeon-Jong Yang,Hwan Soo Kim,Ju-Hee Seo,Sung-Il Woo,Hyung Young Kim,You 대한천식알레르기학회 2020 Allergy, Asthma & Immunology Research Vol.12 No.1
Purpose: Childhood asthma has a considerable social impact and economic burden, especially in severe asthma. This study aimed to identify the proportion of childhood asthma severity and to evaluate associated factors for greater asthma severity. Methods: This study was performed on 667 children aged 5–15 years with asthma from the nationwide 19 hospitals in the Korean childhood Asthma Study (KAS). Asthma was classified as mild intermittent, mild persistent, and moderate/severe persistent groups according to the National Asthma Education and Prevention Program recommendations. Multinomial logistic regression models were used to identify the associated factors for greater asthma severity. Results: Mild persistent asthma was most prevalent (39.0%), followed by mild intermittent (37.6%), moderate persistent (22.8%), and severe persistent asthma (0.6%). Onset later than 6 years of age (adjusted odds ratio [aOR], 1.69 for mild persistent asthma; aOR, 1.92 for moderate/severe persistent asthma) tended to increase asthma severity. Exposure to environmental tobacco smoke (aOR, 1.53 for mild persistent asthma; aOR, 1.85 for moderate/severe persistent asthma), and current dog ownership with sensitization to dog dander (aOR, 5.86 for mild persistent asthma; aOR, 6.90 for moderate/severe persistent asthma) showed increasing trends with greater asthma severity. Lower maternal education levels (aOR, 2.32) and no usage of an air purifier in exposure to high levels of outdoor air pollution (aOR, 1.76) were associated with moderate/severe persistent asthma. Conclusions: Modification of identified environmental factors associated with greater asthma severity might help better control childhood asthma, thereby reducing the disease burden due to childhood asthma.