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남정만,김군학 濟州大學校 海洋硏究所 2004 해양과환경연구소 연구논문집 Vol.28 No.1
Recently, the efficient handling of recycled concrete becomes a problem, as re-development of city centers and apartments are .being activated in Korea. The effort to utilize the concrete aggregate as supplementary base course of road, back filling and refilling materials has been launched since the early 1980s, and the utilization method has been constantly studied and reviewed to commercialize it in various countries including the United States and European countries. The concrete waste matters have the attributes that they need a vast area to reclaim, and their biological degeneration is not conducted with time passage. 70∼80 thus, the concrete waste matter's potential utilization is very high. According to the data studied so far, the CBR value of recycled aggregate was 60.5%, the maximum dry density was 1.98 g/㎤ at 11.5% in optimal function ratio, abrasion was 21.8% and absorption rate was 5.65%. As a result of analyses on the domestic laws and on the quality standards through gathering waste concrete from construction sites within Jeju Island, the recycled waste concrete aggregate may e judgingly used as the material for back filling, refilling, road bed filled ground and supplementary base course of road materials.
HBsAg 양성인 비호즈킨 림프종 환자에서 항암 화학요법 후 간 기능 악화
김창민,이영우,이상원,김봉석,이군희,조진아,정숙향,이진오,한철주,김유철,정문관,강윤구,류백렬,곽진영,홍현주,이군학 대한소화기학회 2000 대한소화기학회지 Vol.35 No.1
Background/Aims: Immunosuppressive therapy such as anti-cancer chemotherapy is often complicated with reactivation of hepatitis B. We tried to investigate the prevalence of hepatitis B virus (HBV) infection in patients with non-Hodgkin's lymphoma (NHL). Furthermore, we evaluated the frequency of hepatic complications, the clinical outcome, and the risk factors associated with the development of hepatic complications in HBsAg-positive patients treated with chemotherapy for NHL. Methods: One hundred eighty-five patients who were diagnosed as NHL and treated with chemotherapy were retrospectively analyzed. Results: The prevalence of HBV infection was 14.1% of the patients. The frequency of hepatic complications in HBsAg-positive patients receiving chemotherapy for NHL was significantly higher than those of HBsAg-negative patients. (50% vs. 10.1%), and the complete response (CR) rate was significantly lower (42.3% vs. 67.9%). We could not find any significant risk factor associated with the development of hepatic complications in HBsAg-positive NHL patients received chemotherapy. Conclusions: For HBsAg-positive NHL patients receiving chemotherapy, special concern and close follow-up is needed because of high frequency of hepatic complication and low CR rate caused by chemotherapy.