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BACKGROUND Schistosomiasis remains a major public health problem in China. The major endemic foci are the lake and marshland regions of southern China, particularly the regions along the middle and lower reach of the Yangtze River in four provinces (Hubei, Hunan, Jiangxi, and Anhui). The purpose of our study is to assess the effect of a new integrated(More)
OBJECTIVE To investigate the influence of cigarette smoking on human sperm DNA integrity. METHODS Totally, 784 cases of male infertility were selected from our case database and grouped according to whether they were smokers or nonsmokers, how much they smoked (< or = 10, 11-19 and > or = 20 cigarettes/d) and how long they smoked (< or = 5, 6-9 and > or =(More)
BACKGROUND Schistosomiasis remains a major public health problem in China. The major endemic areas are located in the lake and marshland regions of southern China, particularly in areas along the middle and low reach of the Yangtze River. Spatial analytical techniques are often used in epidemiology to identify spatial clusters in disease regions. This study(More)
OBJECTIVE To understand the risk factors of schistosomiasis transmission in the Three Gorges Reservoir Area (TGRA) and to provide evidence for the development of control strategy. METHODS Approaches including epidemiology, immunology and field survey were applied to investigate the potential risk factors which would involve the importation of infectious(More)
OBJECTIVE To evaluate the molluscicidal effect of suspension concentrate of 26% metaldehyde and niclosamide (MNSC) in laboratory and field. METHODS The experiment of MNSC against Oncomelania snails were performed by immersion and spray methods with different time in laboratory and field, and the wettable powder of 50% niclosamide ethanolamine salt (WPN)(More)
OBJECTIVE To understand the dynamic schistosomiasis situation in Hubei Province so as to provide the evidence for formulating the effective control strategy. METHODS According to the Scheme of Schistosomiasis Surveillance in Hubei Province (the 2009 edition) , 207 endemic villages were selected and investigated for the schistosome infections of residents(More)
Construction project bidding is a kind of transaction way of construction project the most widely used ,the bidding is a closed price auction, the game among the bidders and the tenders belongs to a kind of non-cooperation and incomplete static game and so does it among the tenders. According to the special rules of bidding, the game theory is put into(More)
OBJECTIVE To understand the change of hydrological regime in the Yangtze River and schistosomiasis endemic situation after the implementation of Three Gorges Project in Hubei Province. METHODS The data of hydrological regime of the Yangtze River, schistosomiasis epidemic situation, and Oncomelania hupensis snail status were collected and analyzed in Hubei(More)
Construction enterprises win the project by construction project bidding .In present system of biding ,the threshold bidding cost directly impacts on bidding for quotation price of winning the tender, so it is very critical to design reasonable cost threshold in completive-bidding .There are many factors that influence the construction cost, which make(More)
A polyphenol oxidase was purified and characterised from leaves of the common spiderflower. Purification sequentially with ammonium sulphate, dialysis, DEAE-Sepharose ion-exchange chromatography and Sephadex G-75 gel filtration chromatography resulted in 37.8-fold enrichment in the specific activity and 44.3% recovery of the total activity. Purified PPO is(More)