in this study, biocontrol effect of some strains pseudomonas fluorescent surveyagainst pythium aphanidermatum the causal agent of cucumber root rot disease. first biocontrol ability of bacteria against the fungal pathogen evaluated by cross-culture method. results showed that inhibition zone of strain t17-4 (7.5 mm) was more than others. seven strains including t17-4, cha0, cha89, vupf52, vupf5...

this study was conducted to evaluate the responses of two greenhouse tomato cultivars to nutrient solutions' electrical conductivity (ec). two cluster type greenhouse tomato cultivars (razan and ergon) were grown in perlite in a glasshouse hydroponic system. the grown plants were daily fed with either constant ec nutrient solutions (ecs 2, 3 ds m-1) or nutrient solutions of alternatively c...

curly top disease is one of the important diseases of sugar beet. spatial pattern and population variation of leafhoppers circulifer haematoceps, and c. tenellus, vectors of sugar beet curly top virus, were studied in hamadan province, iran for three years (2007- 2009). sampling was carried out at the early stage of the plant growth, in accordance with planting date for 9 weeks, in 7- 10 day in...

drought is the most common environmental stresses that affects plant growth. to study the combined effects of arbuscular mycorrhizal fungi (glomus intratadices) and jasmonic acid on growth and ecophysiologycal characteristics of pistachio seedlings cv. qazvini under drought stress, a greenhouse experiment was conducted in a completely randomized design with three replications. experimental fact...

A r e f u t a t i o n a l sys tem o f l o g i c f o r a l a n g u a g e o f o r d e r w i a p r e s e n t e d . T h i s langage i s a s l i g h t m o d i f i c a t i o n o f C h u r c h ' s \ c a l c u l u s w i t h t y p e s . The sys tem i s c o m p l e t e , i n the sense t h a t a r e f u t a t i o n o f a s e t o f sen tences e x i s t s i f and o n l y i f t h i s s e t does n o t possess...

b i n a t i o n a l s w i t c h i n g n e t w o r k s which c o n t a i n s u f f i c i e n t r e d u n d a n c y s o t h a t t h e p r e s e n c e o f any s i n g l e f a u l t can b e d e t e c t e d. I t i s w e l l known t h a t (w i t h i n b r o a d l i m i t s) any i s o l a t e d f a u l t i n a s i n g l e-o u t p u t n e t w o r k may b e d e t e c t e d w i t h a b o u t 2 : 1 r e d ...

P h y t o p l a n k t o n c o m p o s i t i o n a n d t h e r a n g e o f s e a s o n a l p a t t e r n s o f a b u n d a n c e a r e p r e s e n t e d f o r t h e t i d a l f r e s h w a t e r r e g i o n s i n t w o V i r g i n i a r i v e r s b a s e d o n d a t a a c c u m u l a t e d m o n t h l y f r o m 1 9 8 6 t h r o u g h 1 9 9 9 . D i a t o m s d o m i n a t e d t h e f l o r a d u r...

T h i s paper i s concerned w i t h a p l a n n i n g system f o r a r o b o t w i t h a hand and an eye w h i c h can m a n i p u l a t e b l o c k s . Two d i f f e r e n t k i n d s o f p r o b l e m s o l v e r s a r e used . One i s m a i n l y composed of a theorem p r o v e r based on t h e r e s o l u t i o n p r i n c i p l e , and the o t h e r c o n s i s t s o f a theorem p r o v e ...

in order to investigate the effect of different levels of cycosel and naphthalene acetic acid on some vegetative traits and on essential oil yield from rose-scented geranium (pelargonium graveolens heritier), an experiment was conducted in 2008 in the research greenhouse of horticulture department of zanjan university. the study was arranged as a factorial experiment, based upon a randomized co...

a . t r u e . b . F a l s e . P e o p l e w i t h i m p a i r m e n t s d o n o t l i k e t o b e p i t i e d . I t i s b e t t e r t o t r e a t t h e m w i t h t h e s a m e r e s p e c t a n d d i g n i t y y o u w o u l d s h o w t o p e o p l e w i t h o u t i m p a i r m e n t s . c . F a l s e . I m p a i r m e n t s r e f e r t o t h e p h y s i c a...