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RISS 인기검색어
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- 저자 : 신정현 ( Jung Hyeon Shin ) (검색결과 2 건)
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소윤환 ( Yoon Hwan So ),강동환 ( Dong Hwan Kang ),김일규 ( Il Kyu Kim ),김병우 ( Byung Woo Kim ),윤환진 ( Hwan Jin Yoon ),김시현 ( Si Hyeon Kim ),손용석 ( Yong Seok Son ),신정현 ( Jung Hyeon Shin ),안정우 ( Jeong Woo Ahn ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.2
This study investigated the characteristics of variations in carbon dioxide concentration and air temperature with the vertical change of surface in a grassplot. Field observations were carried out at a grassplot in Gyeongnam Science High School, over four days in August and November, 2015. Continuous observation equipment (GMP343, VAISALA) was installed at the LP (0.1 m from the surface) and UP (1.1 m from the surface) points, and the carbon dioxide concentration and air temperature were measured simultaneously at 1-min intervals. To summarize the results of the observation, August had higher than average concentrations of carbon dioxide, while November showed average air temperatures. Moreover, the concentration of carbon dioxide was higher at the UP point, while the air temperature was higher at the LP point. The correlation coefficient of carbon dioxide concentration between the UP and LP points was 0.80 in August across all the four days, while it was higher in November at 0.58 0.95. The results of the regression analysis of carbon dioxide concentration with air temperature changes for both August and November showed a distinct change at the LP point (R2=0.36 0.76), as compared to the UP point (R2=0.1 0.57). Between the UP and LP points, the carbon dioxide concentration and air temperature regression analysis results indicated that an active exchange was taking place between the two points.
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이정희,이은영,김명환,정성희,이성구,서동완,김홍자,민영일,이경노,최재원,김연석,명승재,신정현 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.5
Background and Study Aims: Multiple biliary papillomatosis (MBP) is an uncommon disease. This study was undertaken to review cases with respect to describing clinical features and characteristical cholangiographic findings, and to define the role of cholangioscopy in the diagnosis and treatment of this disorder. Patients and Methods: from 1990 to 1997, nine patients (mean age; 57.3 years, 6 men and 3 women) were diagnosed as having MBP arnong 5,361 cases of endoscopic retrograde cholangiography (ERC) conducted at our center. A retrospective analyses of the cholangiographic and cholangioscopic findings as well as clinieal features were performed. Results: Small, multiple round to ovoid filling defects in the bile duct and ductal wall rregularity were revealed using ERC. seven patients underwent cholangioscopic examination. Additional small papillary lesions in the intrahepatic bile duct were detected through a cholangioscopic examination in four patients whose ERC findings revealed only the extrahepatic lesions. In two of theses four patients, the surgical plan was changed from Whipple's operation to a hepatica-pancreatico-duodenectamy, due to the detection of unaklticipated lesions in the intrahepatic bile duct under a cholangioscopic examination, and therefore, curative resection was possible. Conclusion: This cases are composed of series of reports on the characteristic ERC findings of MBP. When MBP is suspected wing conventional radiologic imaging modalities including ERC, preoperative percutaneous transhepatic cholangioscopic examination is strongly recommended. Cholangioscopic examination may be useful to precisely determine the ductal extension of the disease and to decide whether of not hepatic resection is needed, as well as to confirm the histology.
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