deficiency of water resources is one of the major challenges at the global scale and also in iran. the existence water resources of oceans and seas such as the caspian sea and persian gulf in the north and southern parts of iran respectively, can be considered as the alternative to dominate the future problem. this study is processed absorption of nacl based-on natural zeolite and perlite. in o...

summary based on the results of the analysis of site effects, mostly those with shear wave velocity and the fundamental period chosen as the basis for classification. in revision of earthquake resistant design regulations for buildings, classification of lands should be subject to the field conditions, geological, geotechnical, geophysical, and laboratory tests.in this context, the average shea...

due to the use of secale montanum for different rangelands reclamation across the country, management of these ecosystems need to be aware of its ability to environmental stresses. this research investigated the effect of pollutant element of cu and pb on seed germination and growth of this species in laboratory. therefore, the effect of five treatments (control, 50, 100, 150, 200ppm) of pb (no...

soil reduces the hazardous effects of compounds on the components of ecosystem because of self –purification property and the ability for their fixation. playing such a role in soils under redox conditions is performed by pedogenic fe-mn concentrations. in order to investigate cobalt, copper and lead accumulation in iron and manganese concentrations, at first the concentrations were precisely s...

bitter asafetida (ferula asa-fetidae l.) is a wild plant of the family umbelliferae. the present study was carried out to determine the type of dormancy of the plant’s seed, and find out the most suitable treatment needed for quick germination of seeds. twelve treatments including ga3 (500, 1000, 1500 ppm), kno3 (0.1, 0.2 0.3 molar), rinsing (24, 48, 72 hour),elimination of seed coat (one year-...

drought as a climatic phenomenon affected many different environmental issues and generally is associated with the decreasing in average precipitation. evaluation and monitoring of the drought is a fundamental step in proper programming of water resources management. regarding the recent conditions water scarcity in the urmia lake basin, assessment of the drought index in this region is inevita...

d e v e l o p m e n t p r o c e s s . A n u n d e r l y i n g a s p e c t i s t h e e f f e c t i v e n e s s o f f i x e s : i f a f a i r n u m b e r o f f i x e d b u g s a r e r e o p e n e d , i t c o u l d i n d i c a t e i n s t a b i l i t y i n t h e s o f t w a r e s y s t e m . T o t h e b e s t o f o u r k n o w l e d g e t h e r e h a s b e e n o n l i t t l e p r i o r w o r k o n...

I n d i v i d u a l s w h o m a s t e r s o m e t h i n g t h a t t h e y p e r c e i v e a s d i f f i c u l t ( e x e r c i s i n g r e g u l a r l y ) m a y e x p e r i e n c e a p o s i t i v e c h a n g e i n t h e i r p s y c h o l o g i c a l h e a l t h m a n i f e s t e d b y i n c r e a s e d s e l f c o n f i d e n c e , i m p r o v e d s e l f e f f i c a c y ( a n “ I c a n d o i t...

The p r o b l e m s t u d i e d i s t h a t o f l e a r n i n g p r o b l e m s o l v i n g h e u r i s t i c s b y d o i n g . The pu rpose i s t o e x p l o r e t h e l e a r n i n g b e h a v i o r o f a h i g h l y c o n s t r a i n e d mechan ism. The c o n s t r a i n t s a r e choosen o n t h e b a s i s o f D s y c h o l o g i c a l c o n s i d e r a t i o n s . Computer r u n s show t ...

1 C o r r e c t a n s w e r : b . T h e r i s k c a n n o t b e a b o l i s h e d b y a h e a l t h y l i f e s t y l e , b u t i t c a n b e g r e a t l y r e d u c e d . D i a b e t e s k i l l s m o r e p e o p l e t h a n T B , m a l a r i a , a n d H I V p u t t o g e t h e r . I f d i a b e t i c r e t i n o p a t h y i s d i a g n o s e d a n d t r e a...