in order to study of the radiation interception and red to far red light ratio variations in sunflower hybrids under drought stress, nine sunflower hybrids in three separate experiments were compared as randomized complete block designs with three replications at the research station of seed and plant improvement institute in karaj in 2006. first experiment (control) was irrigated based on 60 m...

insects with over 30,000 aquatic species are known as very successful arthropods in freshwater habitats. some of them are applied as biological indicators for water quality control, as well as the main food supply for fishes and amphibians. the faunistic studies are the basic step in entomological researches; the current study was carried out emphasizing on the fauna of aquatic insects in karaj...

OBJECTIVE High purity heroin use is a new epidemic health concern among Iranian drug-using women in recent years. However, the nature and initial factors associated with this serious health problem have not been studied yet. METHODS To understand this issue, a cross-sectional study was conducted and sixty treatment and non-treatment seekers who met the Diagnostic and Statistical Manual of Men...

A 5-month old puppy with muco-cutaneous lesions in the chin, around lips and eyes was examined physically and microscopically for leishmaniasis. Muco-cutaneous lesions containing a large number of amastigotes of Leishmania spp. were observed. Amastigotes were also detected in liver and spleen of the puppy. The animal was positive with Dipstick rK39 kit and high level of anti-Leishmania antibodi...

The youth trend factors addiction to drugs was the purpose of this research. In the other words, it is attempted to answer to essential question what factors are caused to the addiction in the youth? To reach to answer the above question, it is used mainly from four theoretical perspectives namely anomaly theory, isolationism theory, labeling theory and Sutherland learning theory. The independe...