肝细胞癌（hepatocellular carcinoma，HCC）是世界上最常见的恶性肿瘤之一。流行病学研究显示，多种遗传学因素与环境致病因素均可导致HCC的发生，并有地域的差异性。例如在日本及欧美国家，70%以上的HCC发生与慢性丙型肝炎病毒（hepat...肝细胞癌（hepatocellular carcinoma，HCC）是世界上最常见的恶性肿瘤之一。流行病学研究显示，多种遗传学因素与环境致病因素均可导致HCC的发生，并有地域的差异性。例如在日本及欧美国家，70%以上的HCC发生与慢性丙型肝炎病毒（hepatitis C virus，HCV）感染和高摄入酒精有关；在我国，特别是广西地区，大约80%以上的HCC与该地区慢性乙型肝炎病毒（hepatitis B virus， HBV）的高感染率以及黄曲霉毒素B1（aflatoxin B1，AFB1）的高暴露密切相关。展开更多
A series of perovskite type oxides and supported Ag catalysts were prepared, and characterized by X ray diffraction (XRD) and X ray photoelectron spectroscopy (XPS). The catalytic activities of the catalyst...A series of perovskite type oxides and supported Ag catalysts were prepared, and characterized by X ray diffraction (XRD) and X ray photoelectron spectroscopy (XPS). The catalytic activities of the catalysts as well as influencing factors on catalytic activity have been investigated for the simultaneous removal of NOx and diesel soot particulate. An increase in catalytic activity for the selective reduction of NOx was observed with Ag addition in these perovskite oxides, especially with 5% Ag loading. This catalyst could be a promising candidate of catalytic material for the simultaneous elimination of NOx and diesel soot.展开更多
Characteristics and consequences of amphetamine-type stimulants(ATS) abuse was surveyed in 15 areas in nationwide from February 2001 to January 2002.A structured questionnaire that included the drug history,patterns,r...Characteristics and consequences of amphetamine-type stimulants(ATS) abuse was surveyed in 15 areas in nationwide from February 2001 to January 2002.A structured questionnaire that included the drug history,patterns,reasons and consequences with using ATS was used in this study.A total of 1 404 urine testing positive subjects participated in this study.The results suggested that most ATS users(65.2%) were male,who did not attend college and typically were unemployed or self-employed.Subjects mean age was 28.2±6.3 years.The categories of abused ATS included of MDMA (ecstasy),methamphetamine(ice) and ephedrine.The main reason for initial ATS use was “satisfaction of curiosity” and main reason for continued use was “enjoyment of effects”.“Chasing dragon” and swallowing were most common initial two routes of administration,and injecting route was increasing after initial phase.Main place of ATS use was at recreation setting.The symptoms of irritability,depression,hallucinations,mania,aggression and delusions have found as ATS intoxication among some subjects.展开更多
文摘肝细胞癌（hepatocellular carcinoma，HCC）是世界上最常见的恶性肿瘤之一。流行病学研究显示，多种遗传学因素与环境致病因素均可导致HCC的发生，并有地域的差异性。例如在日本及欧美国家，70%以上的HCC发生与慢性丙型肝炎病毒（hepatitis C virus，HCV）感染和高摄入酒精有关；在我国，特别是广西地区，大约80%以上的HCC与该地区慢性乙型肝炎病毒（hepatitis B virus， HBV）的高感染率以及黄曲霉毒素B1（aflatoxin B1，AFB1）的高暴露密切相关。
文摘A series of perovskite type oxides and supported Ag catalysts were prepared, and characterized by X ray diffraction (XRD) and X ray photoelectron spectroscopy (XPS). The catalytic activities of the catalysts as well as influencing factors on catalytic activity have been investigated for the simultaneous removal of NOx and diesel soot particulate. An increase in catalytic activity for the selective reduction of NOx was observed with Ag addition in these perovskite oxides, especially with 5% Ag loading. This catalyst could be a promising candidate of catalytic material for the simultaneous elimination of NOx and diesel soot.
文摘Characteristics and consequences of amphetamine-type stimulants(ATS) abuse was surveyed in 15 areas in nationwide from February 2001 to January 2002.A structured questionnaire that included the drug history,patterns,reasons and consequences with using ATS was used in this study.A total of 1 404 urine testing positive subjects participated in this study.The results suggested that most ATS users(65.2%) were male,who did not attend college and typically were unemployed or self-employed.Subjects mean age was 28.2±6.3 years.The categories of abused ATS included of MDMA (ecstasy),methamphetamine(ice) and ephedrine.The main reason for initial ATS use was “satisfaction of curiosity” and main reason for continued use was “enjoyment of effects”.“Chasing dragon” and swallowing were most common initial two routes of administration,and injecting route was increasing after initial phase.Main place of ATS use was at recreation setting.The symptoms of irritability,depression,hallucinations,mania,aggression and delusions have found as ATS intoxication among some subjects.
