Xi-yan Zhang

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The effect of dexamethasone on post-dural puncture headache (PDPH) after spinal anesthesia has not been well elucidated. This randomized, double-blind, placebo-controlled trial was carried out in patients undergoing a cesarean at the Qilu Hospital, Shandong University. The subjects were randomly divided into a placebo and a dexamethasone group. The(More)
There are two main quotation mode in current bidding, which are without base price and compound base price. Bidders should bid accurately and reasonably to win a bid. Based on game theory and the characteristics in bidding, this paper constructed bidding price game model of without base price and bidding price game model of compound base price to provide(More)
OBJECTIVE To evaluate the association between metabolic syndrome and colorectal cancer. METHODS A multicenter case-control study was conducted. A total of 1506 cases of colorectal cancer (936 males and 570 females), whose clinical data were complete and aged from 30 to 75, were collected in the Third, First and Second People's Hospital of Jingdezhen(More)
The project risks can be evaluated by Analytic Hierarchy Process however this method is not flexible. Based on the introduction of Gray System Theory and the improvement of Analytic Hierarchy Process, Gray Analytic Hierarchy Process was proposed in this paper to evaluate project risks effectively. The basic steps of Gray Analytic Hierarchy Process were(More)
OBJECTIVE To conduct long-term follow-ups on the efficacies of surgical approaches for intertrochanteric fractures in elder patients. METHODS The outcomes of intertrochanteric fractures in 402 elder patients undergoing different surgical procedures during 2005 to 2009 were reviewed. The modified classification of Singh index, detailed surgical(More)
Six soil samples including 3 wilt disease-infected samples and 3 disease-free samples were collected from the banana orchards in 3 areas in Lingao County, Hainan Province of South China. The soil physical and chemical properties were determined by conventional methods, and the diversity of soil bacterial community was analyzed by terminal restriction(More)
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