With the rapid economic growth and development, the problem of environmental pollution in China’s cities is becoming increasingly serious, and environmental pollution takes on a regional difference. There is, however, little comprehensive evaluation on the environmental performance and the regional difference of strictly-environmental-monitored cities in China. In this paper, the environmental ...

abstract one of the major aspects of water resources management in the arid and semi-arid regions is the use of unconventional water sources such as effluents from wastewater treatment plants. as a result, assessment of water supply potential as well as fertilizer values of these unconventional water sources is an important issue in any comprehensive resource management program. in this study, ...

background: galactosemia is a congenital metabolic disorder that can damage the health of a newborn. screening is an important step to prevent and treat this condition. due to increasing health care costs and limited financial resources of health systems, the most suitable economic analysis tool should be applied. the aim of this study was to analyze the cost-utility of neonatal screening progr...

background during the last three decades, the total fertility rate (tfr) in iran has fallen considerably; from 6.5 per woman in 1983 to 1.89 in 2010. this paper analyzes the extent to which economic determinants at the micro and macro levels are associated with the number of children in iranian households.   methods household data from the 2010 household expenditure and income survey (heis) is ...

A mong the theories explaining the relationship between creativity criteria in cities and economic growth, “Human Capital Theory” by Glaeser and “Creative Class theory” by Florida can be mentioned. Accordingly, present paper aimed at analysis of the creativity effect on regional economic growth and is presented in two theoretical and experimental parts. Considering the results of the curre...

A successful cogeneration system design project needs an estimation of the economical parameters of the project, including capital investment, costs of fuel, expenses in maintenance and operating, and the proper cost for the products. This study describes the economic consideration of the benchmark cogeneration systems, called CGAM system located in the United States. To evaluate the profitabil...

this experiment was conducted to determine the effect of using l-threonine and reducing dietary levels of crude protein (cp) on egg production criteria in layers. three hundred of hy-line w36 laying hens were used in this experiment. this experiment consisted of three experimental treatments with five replications in each. experimental treatments included 3 diets with different levels of cp whi...