عباس نیکنام

Today with significant increase in production of polymeric products and advances in polymer science and technology, the importance of efficient management of polymeric waste has gain an even more significance. From efficient and practical solutions proposed in this field, recycling these wastes in order to produce gaseous and liquid fuels can be named as a valid and feasible solution. In addition to protecting the environment, this solution is a good replacement for natural fuels. Therefore, this research aims to increase the fuel efficiency and quality of plastic waste products via catalytic pyrolysis process. In this research, an expanded mathematical model is presented, and by using two methods of response surface and genetic algorithm, the proposed model and its parameters (reactor’s temperature and catalyst weight), for finding the optimal conditions shall be investigated. According to evaluation of base variance algorithm, the scale of deviation based on the expanded model, for liquid and gaseous fuel efficiencies is calculated to be 0.9641 and 0.9655 respectively.

The health workforce has a dynamically changing nature and the regular documentation of its distribution is a persistent policy concern. This study aimed to measure the distribution of general physicians in primary health care in Bushehr, Iran.
This was a descriptive study including all general physicians working in primary health care in Bushehr Province, Iran (2010-2013). We investigated the degree of inequality of distribution of general physicians by calculating the Gini Index and plotting Lorenz curve by DAD 4/6 & Robin Hood index by Excel software, both before and after adjusting for crud mortality and consultation rates.
The highest value of the degree of inequality was based on the number of consultations which was at the beginning and end of the study period 0.321 & 0.196 (with reduction equivalent to %39), based on crude mortality rate of 0.157 & 0.125 (with reduction equivalent to 20%) and at population level of 0.117 & 0.86 (with reduction equivalent to %26). The number of physicians available for distribution based on the number of consultation relative to the population was twice, approximately. The amount of redistribution of general physician increased from 15 people based on the population to 31 based on the number of consultations and from 10 to 20 in 2010 & 2013, respectively.
It seems that the distribution of general physicians was not proportional to the population & health needs between districts. Based on Gini & Robin Hood Indices, more efforts are needed to tackle health inequality.