a synoptic method based on stream analysis is applied to understand the governing mechanism of summer rainfall occurrence in the south of iran. based on this, the rainfall data of 152 stations of iran were analyzed for a 33-year period (1970-2002). investigating the spatial and temporal distribution of summer rainfall, a typical rainy region is recognized in the south east of iran. it is found ...

abstract: the first period of abbasi dynasty is one of the glorious periods of islamic culture and civilization, which is known as the golden era of islamic culture and civilization. because in this era the power and riches of abbasi dynasty increased so high that led the islamic civilization grow in the various fields of science, literature and art especially music. while pretending as firm re...

bond o f i m p u r i t i e s a t t h e s u r f a c e o f p o l y c r y s t a l l i n e s i 1 i c o n samples g rown on a c a r b o n r i b b o n . B e s i d e s m a i n i m p u r i t i e s ( c a r b o n and o x y g e n ) , a l w a y s p r e s e n t a t c o n c e n t r a t i o n s a r o u n d t h e i r l i m i t o f s o l u b i l i t y i n s i l i c o n , m e t a l i m p u r i t i e s have been ...

drought tolerances of 55 indigenous strains of pseudomonas fluorescens were evaluated. to assess the tolerance rate of the strains to various levels of water deficit, their growth rate in nb medium containing concentrations of 40.587, 438.838 and 548.838 g of polyethylene glycol 6000 per liter of medium were utilized. water potentials of aforesaid levels were estimated as 0, - 10, - 20 and -30 ...

v > V M J n i t ii T r l h l i , p r t i r i f d u il s i u i t u i l p . i p i j • . , r U ' l b tin.' w i u n c i of t i n : ( i r a h a t n l l u k . t r S t m l c i i t x h i p t o r t l i .a c a d e m i c y e a r 1930 -37 , a c c o r d i n g t o a»i a n i m n n c e 1 ' , ! m i n t b y t h e r e g i s t r a r ' s r i f f i c f T h e ; ; ' s tHiiff i if t tsUip i s . a w i m l e d a n n u a ...

introduction todays, the application of new methods for monitoring and online management of agricultural farms is necessary to increase quality and quantity of agricultural products. remote sensing is one of the technologies that can be used to monitor agricultural farms and natural resources. this technology is capable of detection and prediction of farm changes by application of satellite and...

extended abstract   introduction the most important indicator of climate in a region is vegetation community. climate can be different over large areas, because of changes in vegetation community. vegetation influences weather and climate in its surrounding areas mostly by way of evapotranspiration and albedo so they play a role in the earth’s energy balance. these effects on the earth’s energy...

this study was conducted to determine water stress tolerance of two iranian dudaim melons (kerman & birjand) and one iranian muskmelon (samsoury). throughout the experiment, three different levels of irrigation with three irrigation starting points (-50, -65 and -75 cb of matric potential) were employed. results indicated that water stress significantly affected yield, firmness, fruit sugars as...

T e c h n o l o g y d e v e l o p m e n t i s a response o f sc ien t i f i c k n o w l e d g e to the c h a n g i n g needs o f c o n s u m e r s , f a r m e r s , c o m m u n i t y , c o u n t r y , a n d w o r l d t rade . I n the la te 1960s a n d e a r l y 1970s the re w a s a need to increase t o ta l p r o d u c t i o n by i n t e n s i v e a g r i c u l t u r e . H o w e v e r , i n t h...

A p a s s i v e h a e m a g g l u t i n a t i o n tes t ( P H A ) for h u m a n n e u r o c y s t i c e r c o s i s w a s s t a n d a r d i z e d a n d e v a l u a t e d for the de tec t i on of spec i f i c a n t i b o d i e s to C y s t i c e r c u s c e l l u losae i n c e r e b r o s p i n a l f l u id ( C S F ) . F o r the a s s a y , f o r m a l d e h y d e t r e a t e d g r o u p O R h h...