this study was carried out by using two hundred ewes (2-4 years old) as  pure breeding (zel × zel) and crossbreeding (chal × zel). in each treatment, 30 male and 30 female lambs were fattened in a feedlot experiment for three periods; 75, 100 and 125 days. at the end of each period, 10 lambs of each treatment were slaughter and carcasses analysis was down. the lean meat percentage and bone perc...

The expected decline of health indicators with economic recessions and improvement with economic growth in the nineteenth century Sweden was reversed in the twentieth century, giving the counterintuitive pattern of higher mortality and lower life expectancy in economic expansions and improvement of these indices in recessions. The change or "tipping point" occurred at the end of the nineteenth ...

BACKGROUND The frequent outbreak of environmental threats in China has resulted in increased criticism regarding the health effects of China's urbanization. Urbanization is a double-edged sword with regard to health in China. Although great efforts have been made to investigate the mechanisms through which urbanization influences health, the effect of both economic development and urbanization ...

Declining production from conventional oil resources has initiated a global transition to unconventional oil, such as tar sands. Unconventional oil is generally harder to extract than conventional oil and is expected to have a (much) lower energy return on (energy) investment (EROI). Recently, there has been a surge in publications estimating the EROI of a number of different sources of oil, an...

The significance of non-renewable resources in economic development is an on-going debate between optimists and pessimists, but what insights does it provide for contemporary societies who need to choose between alternative growth paths? This paper aims to explain the depletion of non-renewable resources within the concept of externalities in order to determine the range of externalities for fu...

| December 2015 | 1218 In spite of an emphasis on high quality and quantity of Iranian publications in this article,[2] it should be noted that the complete cycle of science is not summarized in the first chain (science-production). Indeed, the production of technology and the achievement of economic development should be put in the context of scientific and research activities. Scientific prog...

China’s state-guided economic miracle has revitalized a long-standing and unsettled debate about the role of government in transformative economic development. In a firm-level study of corporate governance we examine whether direct state involvement actually makes a positive contribution to the economic performance of newly incorporated firms in China’s urban economy. We show that direct interv...