نتایج جستجو برای: north khorasan province

تعداد نتایج: 229093  

Journal: :پژوهش های زراعی ایران 0

northern khorasan province is located in north-east iran. according to demarton coefficient, it is a semiarid region. arid and semi-arid or subhumid zones are characterized by temperature variations, low and erratic rainfall, periodic droughts and different associations of vegetative cover and soils. this article looks at current dry lands and general guidelines for finding the best area for dr...

Journal: :Journal of Applied Sciences and Environmental Management 2016

Journal: :Journal of the South African Veterinary Association 2002
N R Bryson G A Tice I G Horak C G Stewart B J A du Plessis

Ixodid ticks were collected during the period September 1991 to August 1993 from cattle belonging to small-scale farmers utilising 4 communal grazing areas. Three of these were in North West Province and 1 in Mpumalanga province, South Africa. Ten tick species were collected in North West Province and 7 in Mpumalanga. The adults of Amblyomma hebraeum, Rhipicephalus appendiculatus and Rhipicepha...

Journal: :Egyptian Academic Journal of Biological Sciences. A, Entomology 2015

Journal: :Journal of Applied Sciences and Environmental Management 2017

2015
Ali Ahmadi Hamid Soori Yadollah Mehrabi Koorosh Etemad

BACKGROUND Myocardial infarction (MI) is a leading cause of mortality and morbidity in Iran. No spatial analysis of MI has been conducted to date. The present study was conducted to determine the pattern of MI incidence and to identify the associated factors in Iran by province. MATERIALS AND METHODS This study has two parts. One part is prospective and hospital-based, and the other part is a...

2013
M. Ghorbani

The purpose of this study is that, whether inputs and insurance protection policy can effect on income inequality or not? The data which was needed for this study was gained by stratified simple random sampling from 573 wheat insured and uninsured farmers in North, Razavi and South Khorasan provinces in 1383. Result of this study showed that wheat farmer’s income tends to inequality as among th...

Journal: :زیست شناسی جانوری تجربی 0
الهه شجاعی حصاری کارشناسی ارشد بیوسیستماتیک جانوری، دانشگاه شهید بهشتی، دانشکده علوم زیستی، گروه بیوسیستماتیک جانوری شاهرخ پاشایی راد دکترای حشره شناسی، دانشیار دانشکده علوم زیستی، دانشگاه شهید بهشتی، گروه بیوسیستماتیک جانوری مرتضی سیف اله زاده زوارم کارشناسی ارشد بیوسیستماتیک جانوری، دانشگاه شهید بهشتی، دانشکده علوم زیستی، گروه بیوسیستماتیک جانوری

abstract the syrphidae family (known as hover flies or flower flies) is one of the largest families of diptera with almost 6000 species. adult flies feed on nectar and pollen of flowers and they are crucial agent in pollinating process. the larvae of many species of syrphidae are predators of aphids and play an important role in biological control of pests. in the following faunestic investigat...

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