Out of fifty-two Iranian nonaflatoxigenic strains of Aspergillus flavus,collected from various substrates (soil and kernel) and sources (peanut, corn and pistachio), fifteen representatives were selected according to their different geographical origins (six provinces: Guilan and Golestan, Ardebil, Fars, Kerman and Semnan) and vegetative compatibility groups (VCGs, IR1 to IR15) for microsatelli...

BACKGROUND Great gerbils, Rhombomys opimus, are the main reservoir host of zoonootic cutaneous leishmaniasis (ZCL) in Iran and neighboring countries. Based on morphological traits two subspecies R. opimus sodalis and R. opimus sargadensis have reported in the country. However, variation in infection rate and signs to Leishmania parasites, phenotype, size, and sexual polymorphisms demand more de...

THE RELATIONSHIP BETWEEN INTERNET ADDICTION AND SUICIDAL IDEATION, ATTITUDES TOWARD A PREMARITAL WITH OPPOSITE SEX, BASED ON GENDER SEPARATION (CASE STUDY: YOUTH OF GOLESTAN PROVINCE)

background: tuberculosis (tb) is currently one of the greatest problems in public health. mycobacterium tuberculosis infects about one third of the world's population, of whom more than 80% are living in developing countries. the incidence and prevalence of tb are very different in various parts of iran and also throughout the world. golestan province is one of the areas in the country where th...

Brown spot caused by Bipolaris oryzae is an important rice disease in Southern coast of Caspian Sea, the major rice growing region in Iran. A total of 45 Trichoderma isolates were obtained from rice paddy fields in Golestan and Mazandaran provinces which belonged to Trichoderma harzianum, T. virens and T. atroviride species. Initially, they were screened against B. oryzae by antagonism tests in...

background little is known about hev seroprevalence and its determinants in iran. considering the fact that iran is among the countries in which hev infection is endemic, a large-scale population-based study in this regard is justified. methods this survey was conducted in 2006 in tehran and golestan provinces, iran. stored sera of subjects were tested for serological markers of anti-hev. the b...

every year a large number of migratory wintering water birds, rest in the wetlands situated in the northern provinces of iran. the wetlands are very important ecosystems for these creatures. due to ecological importance of water birds, the results of this study (the birds’ populations and their changes) are helpful to monitor them and are especially important to manage the wetlands. in this stu...

Southern margin of the Caspian Sea due to keeping of domestic animals and abundance of surface water reservoirs is prone to infection with Leptospira sp.. This study was performed to determine anti-Leptospira antibody frequency in Golestan province, southeast of the Caspian Sea in the north of Iran. This study was performed on 1028 people in Golestan province. Sampling was stratified. Leptospir...

In this study, concentration of 17 elements, including As, Ba, Cd, Co, Cu, Hg, Mn, Ni, Pb, Zn, Ca,Fe, Mg, Na, P, S, Si, as well as methylmercury in 31 surface sediments were assessed. The sampling stations were Gulf of Golestan, Miankale Island, Babolsar, Nowshahr and Anzali, which represented the most important harbors in the Golestan, Mazandaran and Gilan provinces in the southern parts of th...