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Jong Hyeok Oh,Doo Seong Hwang,Kue-Il Lee,Yun Dong Choi,Sung Tae Hwang,Jin Ho Park,So-Jin Park 한국방사성폐기물학회 2005 방사성폐기물학회지 Vol.3 No.3
우라늄 변환시설의 라군 슬러지에 함유된 질산염의 안정적 처리를 위해 물 첨가 용해를 실시한 뒤, 여과 케이크의 안정화 특성에 대하여 알아보았다. 물 용해에 의해 대부분의 질산염은 고농도 질산염 용액으로 제거되었으므로, 여과 케이크의 열분해는 에서 하나의 단계로 수행하였다. Muffle furnace를 이용하여 에서 5시간동안 여과 케이크의 열분해를 실시한 결과 라군 1 슬러지에 포함된 U은 의 열분해와 함께 의 형태로 안정화 되었다. 라군 2 열분해 잔류물의 경우에는 열분해 시 생성된 CaO가 냉각과정에서 수분과 반응하여 로 전환되는 것을 TG/DTA 분석과 XRD 분석을 통해 확인할 수 있었지만, 처분장에서 대기중 노출이나 지하수의 침출 등에는 안정한 화합물로 알려져 있으므로, 특별한 첨가제의 첨가 없이 단순 열분해 후 처분이 가능할 것으로 판단된다. Thermal decomposition and stabilization characteristics of the solid cake after the dissolution of nitrate of the lagoon sludge was investigated. Most of the nitrates were dissolved in the water and removed to the filtrate, but small amount of nitrates, calcium carbonate and uranium were remained in the solid cake. The solid cake was thermally decomposed in the muffle furnace at for 5 hours. Uranium, which is in the lagoon 1, was stabilized with decomposition to form. For the lagoon 2, it is confirmed that CaO, which was created by thermal decomposition of the and , was transferred to in the air with water. Because it is known that is stable material, further additives did not need to the stabilization of the thermal decomposition of the lagoons.
황진혁 ( Jin Hyeok Hwang ),정지봉 ( Ji Bong Jeong ),김용태 ( Yong Tae Kim ),윤용범 ( Yong Bum Yoon ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-
〈목적〉 Trypsinogen의 선방 세포 내에서의 활성화가 cerulein 유발 급성 췌장염의 발병에 있어 가장 주요한 요소로 알려져 있다. 그러나 trypsinogen 활성화에 관여하는 세포내 전달체계에 대해서는 그리 밝혀진 바가 많지 않다, 본 연구는 trypsinogen 활성화에 필요한 세포내 신호전달체계로서 MAPKs(ERK & p38)와 PI3-K의 역할에 대해 알아보고자 했다. 〈방법〉 Wister rats에서 췌장을 얻고 PD98059로
위장관 ; 2007년도 3차기관에서 진단된 소화성궤양 환자의 임상상
김진주 ( Jin Joo Kim ),김나영 ( Nayoung Kim ),박현경 ( Hyun Kyung Park ),조현진 ( Hyun Jin Jo ),신철민 ( Cheol Min Shin ),이상협 ( Sang Hyup Lee ),박영수 ( Young Soo Park ),황진혁 ( Jin Hyeok Hwang ),김진욱 ( Jin Wook Kim ),정숙향 대한소화기학회 2012 대한소화기학회지 Vol.59 No.5
Background/Aims: In spite of the improvement of medical treatment for the peptic ulcer disease (PUD), PUD is still one of the common upper gastrointestinal diseases. The purpose of this study was to evaluate the risk factors and general characteristics of Korean patients diagnosed as PUD at a single third referral center. Methods: A total of 310 patients, diagnosed as PUD through endoscopy during one year of 2007 at Seoul National University Bundang Hospital were, retrospectively, evaluated regarding age, gender, Helicobacter pylori (H. pylori) positivity, clinical manifestations, comorbidities and medications. In addition, PUD was analyzed in the aspect of ulcer location, type of visit, gastrointestinal bleeding, and age. Results: The mean age was 61.5 years old (48.1% over 65) and 208 (66.7%) patients were men. The rate of H. pylori infection was 47.8%, and any ulcerogenic medication history such as antiplatelet agents and NSAIDs was found to be 21.0% (65 patients). The rate of idiopathic peptic ulcer without evidence of H. pylori and NSAIDs was found to be 40.6% (126 patients). Among 310 PUD patients, bleeding symptoms such as melena, hematemesis and hematochezia occurred in 110 patients (35.5%). Conclusions: PUD was more prevalent in the elderly patients and frequently associated with bleeding. Substantial proportion of PUD patients had neither H. pylori infection nor history of ulcerogenic medications, suggesting of increasing prevalence of idiopathic PUD. (Korean J Gastroenterol 2012;59:338-346)