نتایج جستجو برای: average frequency of frost days

تعداد نتایج: 21199407  

Journal: :تحقیقات جغرافیایی 0
بهلول علیجانی دانشگاه خوارزمی محمود خسروی دانشگاه سیستان و بلوچستان سید ابوالفضل مسعودیان گروه جغرافیای طبیعی دانشگاه اصفهان سید ابوالفضل مسعودیان گروه جغرافیای طبیعی دانشگاه اصفهان محمود خسروی دانشگاه سیستان و بلوچستان بهلول علیجانی دانشگاه خوارزمی پیمان محمودی

in order to provide climatology atlas of frosts statistical properties of iran and to attain spatial and temporal pattern of it, daily data of minimum temperature of 62 synoptic weather stations for a 15 year-period (1991-2007) from october to may, were adopted from iran meteorological organization. by choosing may 1st as basis day, five statistical properties and their spatial and temporal dis...

Journal: :جغرافیا و توسعه ناحیه ای 0
فرج زاده فرج زاده حسینی حسینی

in this paper the minimum temperatures of 54 weather stations collected for a 31-year period were analyzed for zoning the frost regions in iran. the results of this study show that the average of the number of frost days per year was 62, and the average temperature was 3 degrees of centigrade below zero. dey the tenth month in the iranian calendar, december 22-january 20 with an average of 28, ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1393

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم بهزیستی و توانبخشی - دانشکده توانبخشی 1393

abstract objectives gradual increase length and complexity of utterance (gilcu) therapy method is a form of operant conditioning. this type of treatment is very precise and controlled that is done in 54 steps in 3 speech situations consisted of monologue, reading and conversation. this study aimed to examine the effects of gilcu treatment method on reduction of speech dysfluency of school-age...

Abastract Introduction Road accidents is the outcome of driver behavior, road condition, vehicle status, and environmental factors. Therefore, identification and assessment of effective parameters on road accidents can be considered as an appropriate way to reduce the accident events, driving violations and increase the road safety. Determining the effects of meteorological factors on the ro...

Journal: :محیط شناسی 0
محمود مولی نژاد استادیار پژوهشکدۀ مطالعات فناوری های نوین، سازمان پژوهش های علمی و صنعتی ایران (irost)

introduction frost is one of the most hazardous natural phenomena which it is at times accompanied by abundant damages in the life and properties. freezing and frost are very important for agricultural products in different stages of the growth. this is because, in case of happening, it results in the reduction of the products. frost is the stage of water freezing. in such condition, when the a...

ژورنال: یافته 2013
غلامرضایی, سارا , لشنی زند, مهران ,

Background : Asthma is one of the commonest chronic childhood diseases and one of the main factors of hospital admission at these ages. The main causes of increasing death due to asthma are inability in the diagnosis and piddling the severity of the diseases, delay in the recourse and inappropriate treatment. Therefore the early diagnosis of children at risk for urgent admission in special care...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

Journal: :trauma monthly 0
maryam dastoorpoor neurology research center, department of biostatistics and epidemiology, school of public health, kerman university of medical sciences, kerman, ir iran esmaeil idani department of internal medicine, faculty of medicine, ahvaz jundishapur university of medical sciences, ahvaz, ir iran narges khanjani environmental health engineering research center, kerman university of medical sciences, kerman, ir iran; department of epidemiology and biostatistics, faculty of public health, kerman university of medical sciences, kerman, ir iran. tel: +98-03431325102 gholamreza goudarzi air pollution and respiratory diseases research center, environmental technologies research center (etrc), ahvaz jundishapur university of medical sciences, ahvaz, ir iran abbas bahrampour modeling in health research center, institute for futures studies in health, department of biostatistics and epidemiology, faculty of health kerman univesity of medical sciences kerman, ir iran

results there was a significant positive correlation between increase in the monthly average temperature, the number of rainy days, and the number of frost days with the number of rta (p < 0.05). increased monthly average relative humidity, evaporation, and number of sunny days were negatively correlated with the frequency of rta (p < 0.05). we also observed an inverse significant correlation b...

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