dust storms are destructive climate phenomenon which damage farm, installations,roads,traffic and etc indemnifiable. this phenomena at dry and pertaining regions of the country as environmental perils, is effected by particular atmospheric condition.if the origin and extention of this phenomenon be recognized the damages can be decreased or counteracted.the studied about dust storm show thirtee...

the 1288 ah famine in khorasan has been the subject of numerous studies having examined the event with special focus on its causes and short-term effects as well as the reaction of the people and the state to it. this approach has led to general statements and unjustified generalization of the results of such research to the whole iran. the present article is a case study of the 1288 ah famine ...

the skull of two lacertid lizards of iran including eremias persica from isfahan province, central iranian plateau and mesalina watsonana from birjand in southern khorasan province, eastern iran, was described and compared based on seven dry skull preparations. prominent differences included: the shape of the premaxilla and its articulation with other skull elements, the shape of the frontal (p...

ObjectivesHuman papillomaviruses (HPV) are the main etiology of invasive cervical cancer. Together HPV and viral hepatitis account for cause 25% cancers in developing countries. To evaluate association between population movements spread HPV, this study looked at prevalence, genotypes, phylogenetic assessment Great Khorasan, a pilgrimage-tourism province northeast Iran.MethodsFrom March 2013 to...

Toxoplasmosis is an important zoonotic disease that can cause abortion in humans and animals. The aim of this study was isolation and subsequent genotyping of Toxoplasma gondii isolates in ovine aborted fetuses. During 2012-2013, 39 ovine aborted fetuses were collected from sheep flocks in Khorasan Razavi Province, Iran. The brain samples were screened for detection of the parasite DNA by neste...

The southern African species of the water beetle genus Hydraena Kugelann, 1794, are revised. Twenty-eight new species are described, and redescriptions and new collection records are given for three previously described species, based on the examination and databasing of 11,534 specimens from 488 localities/events. Male genitalia are illustrated, and high resolution habitus images of the holoty...

Introduction: Nowadays, X-ray radiographic imaging plays an essential role in disease diagnosis and treatment. In addition to benefits, X-rays have harmful effects for both patients and radiographers. Observing radiation protection principles reduces radiation exposure and the probability of radiation risk. Therefore, we sought to assess the knowledge, attitude, and performance of radiographers...

the badamu formation (upper toarcian-middle bajocian) mainly consists of limestone and shale and has is cropped out in east of iran. the badamu formation conformably overlays shemshak formation and is underlaid sharply by hojedk formation in kerman area and is underlaid gradually by baghamshah formation in tabas and southern khorasan areas. the aim of this work is petrographical study of rocks ...

The southern African species of the water beetle genus Limnebius Leach, 1815, are revised. Eleven new species are described, based on the examination and databasing of 6,201 specimens from 96 localities/events. Male genitalia are illustrated, and high resolution habitus images of the holotypes are provided. Distribution maps are provided for the eleven species now known from southern Africa, in...