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Cardiovascular diseases (CVD) are recognized as major mortality causes and imposes tremendously heavy socio-economic burden worldwide. A vast variety of risk factors have been introduced in the literature known to enhance the incidence of CVD, such as hyperlipidemia. Therefore in order to make an accurate clinical decision it is essential to have appropriate reference ranges for lipids and lipoprotein particles in a particular population. Healthy female (n = 601) and male (n = 617) cases were randomly selected according to certain exclusion criteria from individuals visiting the major University hospital clinics situated in different part of Ahvaz city, Iran, from June 2010 to December 2010. Fasting blood samples (10 ml) were collected and analyzed for total cholesterol, total triglyceride and HDL-C employing enzymatic assays of CHOD-PAP, GPO-PAP and homogenous methods respectively. The samples were obtained such to include the ethnic populations of Persian, Arab. Lore leaving in this city. The data were analyzed statistically by SPSS-18 software. The obtained results were analyzed then age ethnic-wise and reference ranges (mean ± 1SD) were calculated. Remarkable differences between the obtained results for our population with other nations were seen. Also ethnic difference for HDL-C among our cases was noted. The observed significant differences among different nations and ethnicities emphasizes the need for nation-specific, local reference ranges for lipids and lipoproteins particles, to be established.  相似文献   
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Virtual communities like Second Life (SL) represent an economic factor with increasing potential, but may induce behavior that deviates from real-world experience. This article introduces a new experimental design that is based on the trust game (Berg, Dickhaut, & McCabe, 1995 Berg, J., Dickhaut, J. and McCabe, K. A. 1995. Trust, reciprocity, and social history. Games and Economic Behavior, 10: 290307.  [Google Scholar]), but eliminates the problem of multiple virtual identities. One treatment of the experiment in the virtual world SL was conducted and the results compared to the First Life (FL) control treatment, which was conducted on a university campus. In SL, significantly lower investment levels were found, but significantly higher average returns were found than in the FL treatment or in the literature. It is conjectured that the disparity between trusting and trustworthy behavior is a sign that the social structure in SL is still evolving. It seems plausible that the trustors in a young and developing society cautiously test the extent of trustworthiness, whereas the trustees strategically invest in levels of trustworthiness that are higher than in settled societies to build up a trustworthy environment.  相似文献   
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