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Polycyclic aromatic hydrocarbons (PAH) are believed to be among the principal causative agents for lung cancer in smokers, but no epidemiologic studies have evaluated the relationship of PAH uptake and metabolism to lung cancer. In this study, we quantified prediagnostic urinary levels of r-1,t-2,3,c-4-tetrahydroxy-1,2,3,4-tetrahydrophenanthrene (PheT), a(More)
This work presents a distributed time slot assignment algorithm which adopts TDMA as Medium Access Control, specially suited to support applications with strict delay, jitter and throughput requirements characterized by convergecast traffic patterns in sensor networks. (E.g. wireless video surveillance sensor networks). Our algorithm has three(More)
BACKGROUND Although puerarin is generally considered as a protective agent for cardio-cerebrovascular diseases, the exact effect on reducing myocardial infarction reperfusion injury (MIRI) is not well understood. This study aimed to pool previous randomized controlled studies based on rat models to evaluate the effects of puerarin on MIRI. MATERIAL AND(More)
BACKGROUND Platelet-leukocyte aggregations (PLA) play key roles in acute ischemic stroke (AIS) process and they are formed by the combination of P-selectin (SELP) expressed on the surface of the platelet membranes with P-selectin glycoprotein ligand-1(PSGL-1) expressed on the surface of the leukocytes. There are genetic polymorphisms in SELP and PSGL-1. We(More)
In order to evaluate the overall scheme of mechanical product and choose the best scheme reliably and scientifically. Briefly discussed the priority-degree evaluation method of mechanical product's overall scheme, used the AHP method to determining the weight of index, and established the evaluation model by the priority-degree evaluation method. Then gave(More)
Effective management of health insurance funds is the key to the safe operation of health care system. This paper takes Xi'an as an example, analysis the factors of health insurance fund and the relationship of causal and feedback between the variables. Through the use of system dynamics equations to describe these causal and feedback relationships, build(More)
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