prevalence and diversity of non government organizations (ngos) is indicative of social and political maturity in any given society. nowadays, an important concern of ngos is their efforts in how to attract people’s participation in conserving the environment. to promote the participation of these organizations in the environmental conservation, need arises as to determine the factors influen...

paracobitis vignai is a nemacheilid loach endemic to the sistan basin. it occurs in helmand river and its related reservoirs in sistan-va-baluchistan province in southeastern iran and probably in afghanistan. this species is currently endangered due to habitat loss or degradation, damming and droughts. therefore, this paper reviews the available data on taxonomy and distribution of p. vignai , ...

the reptile and mammals fauna of north-east of iran were investigated and the contraction and fragmentation of some species due to climatic changes and human activities were analyzed. the sampling was carried out in selected stations throughout the great khorsan. the results showed that there are approximately 71 reptiles (including 39 species of lizards, 32 snakes and one turtle) and 83 specie...

breast conservation surgery combined with radiation therapy is now an accepted option for the treatment of early breast cancer. so we decided to evaluate the results of such treatment in our first group of patients treated by this method. from 1992 to 1996 , one hundred patients with stage i and ii breast cancer treated with breast conservative surgery (lumpectomy or quadrantectomy). were irrad...

alburnus chalcoides , caspian shemaya, is found in the river systems of the aral, black and caspian sea basins and is an economically valuable cyprinid from the southern caspian sea. this species has been reported as near threatened species in this basin due to damming, over and illegal fishing, destruction of its spawning grounds and water pollution. the caspian shemaya is an important species...

introduction several methods have been developed to aid in selecting a network of biodiversity protected areas. one of these methods is artificial intelligence which includes a number of different computer algorithms that use an objective function to find the best solution. an algorithm is a mathematical process or a set of rules used for problem solving. recently, site selection algorithms hav...

This paper describes the effort of designing an unconventional exhaust manifold for a marine gas turbine engine, with integrated passive ventilation port cooling engine housing. The study is part larger program to substitute propulsion turbines T22R defense frigate and make proper aerodynamic adaptations. system in question unique, sense that it uses momentum entrain outside air ventilate enclo...