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RISS 인기검색어
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- 저자 : 조경준(Kyeong Joon Cho) (검색결과 4 건)
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이주헌,조경준,김창주,박민재,Lee, Joo Heon,Cho, Kyeong Joon,Kim, Chang Joo,Park, Min Jae 한국수자원학회 2012 한국수자원학회논문집 Vol.45 No.10
본 연구에서는 기상학적 가뭄지수인 SPI(Standardized Precipitation Index)를 이용한 가뭄 빈도해석을 통하여 남한지역에서 발생했던 과거가뭄사상의 시, 공간적 분포 특성을 정량적으로 평가하고자 한다. 가뭄의 심도별, 지역별 발생빈도를 추정하기 위하여 Drought Spell 분석을 실시하였고, 또한 남한지역을 대상으로 심한 가뭄에 대한 가뭄우심지역의 공간적 분포특성을 평가하기 위하여 가뭄의 지속기간별 가뭄빈도해석을 통해 기상관측소별 SDF (severity-duration-frequency) 곡선을 작성하고 이를 이용하여 남한지역을 대상으로 하는 가뭄우심도(Potential Drought Hazard Map)를 작성하였다. 가뭄단계별 과거의 발생빈도를 분석한 결과, 금강, 낙동강, 섬진강 유역에서 심한가뭄과 극한가뭄단계의 발생빈도가 매우 큰 것으로 나타났으며 가뭄빈도해석을 통해 작성된 SDF 곡선에서도 한강유역에 위치한 서울관측소에 비해 금강, 낙동강, 섬진강 유역에 위치한 대전, 대구, 광주 관측소의 재현기간별 가뭄심도가 심하게 나타났다. 가뭄빈도해석을 통해 작성된 가뭄우심도에서는 한강 유역과 낙동강 유역의 상류 지역에 비해 금강, 섬진강, 영산강 유역이 가뭄에 취약했던 지역으로 분석되었으며 가뭄단계별 발생빈도와 유사한 결과를 나타내었다. 계절별 가뭄우심도의 경우 봄철에 가장 자주 가뭄이 발생하였으며 짧은 지속기간의 가뭄이 자주 발생했던 것으로 나타났다. In this study, it was intended to analyze the spatio-temporal distribution of historical drought events occurred in Korea by way of drought frequency analysis using SPI (Standardized Precipitation Index), and Drought spell was executed to estimate drought frequency as per drought severity and regions. Also, SDF (severity-duration-frequency) curves were prepared per each weather stations to estimate spatial distribution characteristics for the severe drought areas of Korea, and Potential Drought Hazard Map was prepared based on the derived SDF curves. Drought frequency analysis per drought stage revealed that severe drought as well as extreme drought frequency were prominently high at Geum River, Nakdong River, and Seomjin River basin as can be seen from SDF curves, and drought severity was found as severer per each drought return period in the data located at Geum River, Nakdong River, and Seomjin River basins as compared with that of Seoul weather station at Han River basin. In the Potential Drought Hazard Map, it showed that Geum River, Seomjin River, and Yeongsan River basins were drought vulnerable areas as compared to upper streams of Nakdong River basin and Han River basin, and showed similar result in drought frequency per drought stage. Drought was occurred frequently during spring seasons with tendency of frequent short drought spell as indicated in Potential Drought Hazard Map of different season.
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만성 (慢性) 무증상 (無症狀) B형 간염 (肝炎) 표면항원 (表面抗原) 보유자에 (保有者) 있어서 조직학적 (組織學的) 연구
조민구(Min Koo Cho),원남희(Nam Hee Won),서승봉(Seung Bong Suh),최종호(Jung Ho Choe),조경준(Kyeong Joon Cho),박병익(Byung Ick Park) 대한소화기학회 1985 대한소화기학회지 Vol.17 No.1
N/A We performed liver needle biopsies on 34 chronic asymptomatic hepatitis B surface antigen (HBsAg) carriers with normal liver function tests. Among them, 12 were found to carry HBeAg and 14 carried anti-HBe. The results were as follows: 1) Of the 34 chronic asymptomatic HBsAg carriers, normal histologies were found in 9, nonspecific reactive changes in 15, chronic persistent hepatitis (CPH) in 9 and chronic active hepatitis (CAH) in l. 2) Of the 12 HBeAg positive carriers, normal histologies were found in 2, nonspecific reactive changes in 6 and CPH in 4 and of the anti-HBe positive carriers, normal histologies were found in 4, nonspecific reactive changes in 6, CPH in 3 and CAH in 1. There was no significant difference between two groups. According to these results, a substantial proportion of chronic asymptomatic HBsAg carriers had histological abnormalities and the status of HBeAg and anti-Hbe did not correlate with liver histology. Qur opinion is liver biopsy is still remains the most useful approach in the evaluation of asymptomatic HBsAg carriers and further long-term clinical studies are needed to understand the prognosis of chronic asymptomatic carrier state.
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흡연이 β-Thromboglobulin, Platelet Factor 4 및 혈소판 응집비에 미치는 영향
신화식,조민구,김소연,이권전,조태봉,조경준,최중호,강남영 대한내과학회 1986 대한내과학회지 Vol.31 No.4
The purpose of this study was to determine whether cigarette smoking acutely increases the plasma beta-thromboglobulin(beta-TG) and platelet factor 4(FF 4) and decreases the platelet aggregate ratio(PAR). Beta-TG, PF4, and PAR were measured before cigarette smoking and 20 minutes after smoking(2 filtered cigarettes) using radioimmunoassay kits, in twenty seven healthy men, aged 21 to 32, abstained from alcohol for 12 hours, from coffee and smoking for at least 8 hours. The results were summarized as follows; 1) In nonsmokers, before smoking plasma beta-TG was 42.9±10.6ng/ml, plasma PF4 7.1±2.7 ng/ml, and PAR 0.98±0.04 and 20 minutes after smoking plasma beta-TG significantly increased to 119. 4±41.6ng/ml, plasma PF 4 to 30.7±9.5ng/ml, and PAR decreased to 0. 86±0.10. 2) In smokers, before smoking plasma beta-TG was 49.3±9.1ng/ml, plasma PF 4 9.47±7.0ng/ ml, and PAR 0. 96+0. 10 and 20 minutes after smoking plasma beta-TG significantly increased to 134.4±43.0ng/ml, plasma PF 4 to 35.1±9.5ng/ml. and PAR decreased to 0.81±0.08. 3) Neither before nor after smoking showed signififcant correlation between nonsmokers and smokers in plasma beta-TG, PF 4, and PAR(p$gt;0.1). However in both groups there were significant difference between plasma beta-TG, PF4, and FAR before and after smoking(p$lt;0.005). In conclusion, there were significant increase in plasma beta-TG and FF 4 and decrease in PAR after smoking. Therefore the effect of cigarette smoking on the platelet activation and number of circulating platelet aggregates were significant.
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간내 공간점유병소 진단에 대한 SPECT 의 임상적 의의
김영중,김재영,이권전,조태봉,고광섭,조경준,최중호,박병익 대한내과학회 1986 대한내과학회지 Vol.31 No.5
The diagnostic capability of Single Photon Emission Computed Tomography(SPECT) for detection of the SQL in liver was examined in 59 patients by comparative study with Liver scan at the internal department of National Police Hospital from the period of June 1985 to Agust 1986. 23 patients had SOL in the liver and others had no SOL. The confirmation of diagnosis was obtained by operation, biopsy, computed tomography, ultrasonography and/or angiography. Both Liver Scan and SPECT with 4~5 mCi of 99 mTc-Tin colloid were performed for each patient. Scintigraphic finding of SOL in Liver was compard between SPECT and Liver Scan. The results obtained were as follows: 1) The diagnostic improvement was established in the 8 cases of the 36 patients without SOL in liver by the SPECT. 2) The diagnostic improvement was established in the 4 cases of the 23 patients with SOL in liver by the SPECT. 3) The diagnostic improvement was established in the 4 cases of the 23 patients with SOL in liver by the SPECT in the diagnosis of the number and location of the SOL in the liver. As the results above mentioned, it was concluded that the SPECT is the new imaging modality in the diagnosis of the SOL in liver, as a combination with Liver Scan used nowadays.
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