the aim of the present research was to study the effect of different concentrations of rosemary (rosmarinus officinalis l.) extract, (0, 10, 12.5, 16.6, 25 and 50) mg/l added to semen extender, on sperm qualitative and quantitative parameters after freezing-thawing process of rooster sperm. 10 ross strain rooster were used. semen samples were collected, 2 times a week. after adding the samples ...

introduction precipitation is one of the most important meteorological variables in comparison with other climatic parameters. it varies extremely over time and space. the occurrence of this climate phenomenon requires specific circumstances in environment. its accurate measurement is important to a wide range of decision makers including hydrologists, agriculturalists, industrialists and etc. ...

T i m e d P e t r i n e t s a n d t i m e d a u t o m a t a a r e t w o s t a n d a r d m o d e l s f o r t h e a n a l y s i s o f r e a l g t i m e s y s t e m s . W e s t u d y i n t h i s p a p e r t h e i r r e l a t i o n s h i p , a n d p r o v e i n p a r t i c u l a r t h a t t h e y a r e i n c o m p a r a b l e w . r . t . l a n g u a g e e q u i v a l e n c e . I n f a c t , w e s t...

W e u s u a l l y t h i n k o f p l a n s a s l i n e a r sequences o f a c t i o n s . T h i s i s b e c a u s e p l a n s a r e u s u a l l y e x e c u t e d one s t e p a t a t i m e . Bu t p l a n s t h e m s e l v e s a r e n o t c o n s t r a i n e d b y l i m i t a t i o n s o f l i n e a r i t y . T h i s p a p e r d e s c r i b e s a new i n f o r m a t i o n s t r u c t u r e , c a l ...

in order to evaluate the effects of drought stress and methanol foliar application on some quantitative and qualitative traits of soybean (cv. viliamz), a split plot experiment was conducted based on randomized complete block design at the faculty of moghan research farm in 2011. treatments were three levels of drought stress based on irrigation at depletion of 40, 55 and 70 percent of availabl...

background and objectives: the region of the experiment is located in golestan province, iran, with agriculture subject to various farming conditions (rain-fed and irrigation) and different levels of salinity (more than 38% of golestan’s total land area is salt-affected). the purpose of this study has been to evaluate the stress indices in the selection of tolerant wheat genotypes, not only for...

T h e p r i n c i p l e s u n d e r l y i n g a c o m p u t e r b a s e d t r e a t m e n t m e t h o d f o r l a n g u a g e a c q u i s i t i o n i n n o n s p e a k i n g a u t i s t i c ch i I dren are descr i bed. T h e m a i n p r i n c i p l e i n v o l v e s e n c o u r a g e m e n t o f e x p l o r a t o r y l e a r n i n g w i t h m i n i m u m a d u l t i n t e r f e r e n c e . T h ...

T h e G P G P / T Æ M S d o m a i n i n d e p e n d e n t c o o r d i n a t i o n f r a m e w o r k f o r s m a l l a g e n t g r o u p s w a s f i r s t d e s c r i b e d a l m o s t t e n y e a r s a g o a n d t h e n m o r e f u l l y d e t a i l e d i n a n I C M A S 9 5 p a p e r . I n t h i s p a p e r , w e d i s c u s s t h e e v o l u t i o n o f t h i s f r a m e w o r k o v e r t h e...

introduction there are significant differences in the spatial distribution of the iran annual precipitation. this is resulted from spatial behavior of precipitation in the one hand and variation in the sources of precipitation on the other. the lack of adequate distribution of meteorological stations and the unavailability of long-term statistics of precipitation makes the analysis of precipita...

introduction climate change happens due to abnormal changes of climate within the earth’s atmosphere and their consequences. one of the most significant effects of climate change is the irreversible damage to some floral species and forest ecosystems. tree species reflect the impact of climate changes on their ring width. generally, tree rings vary in size each year depending upon the environme...