improving the processing and the recycled paper properties is one of permanent concern of papermaking. in this research, the effect of nanochitosan addition on the process and product quality made of writing and printing recycled fiber was investigated. being nano size and so its capability in access to the space between pulp suspension components and also its probable ability to make electrost...

seed rot caused by pythium ultimum is an important disease of safflower in iran and other countries. therefore, finding the genetic sources of resistance and releasing of resistant cultivar is considered as important objective by safflower breeders. this disease will spread when air humidity and the moisture in the soil are sufficiently prepared and this situation occurs exactly in the time of ...

introduction prediction of thunderstorm is one of the most difficult issues in weather forecasting. deep convective clouds develop at small spatial and temporal dimensions about 1-10 km and 1-12 h. various thermodynamic parameters have been discovered over the past 40 years, according to data obtained by radiosounds. the capability of these indices in forecasting instability varies over time an...

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...

to evaluate symbiotic effectiveness and salt tolerance of sinorhizobium meliloti strains, 50 rhizobial strains were isolated from root nodules of medicago sativa cultivated in tehran and zanjan fields. under n-free conditions, the symbiotic effectiveness of different sinorhizobium meliloti strains of bami cultivar were evaluated under greenhouse conditions using 50 sinorhizobium meliloti strain...

T h e o r g a n i z a t i o n o f a p r o g r a m f o r l i n g u i s t i c a n a l y s i s o f g e o m e t r i c a l p a t t e r n s i s d e s c r i b e d . T h e p r o g r a m b e l o n g s t o t h e s y s t e m o f p a t t e r n r e c o g n i t i o n f o r i n d u s t r i a l d r a w i n g s a n d o b j e c t s [ 1 , 2 , 7 ] W e s t a r t e d f r o m t h e f o r m a l i s m s u g g e s t e d...

1 I n t r o d u c t i o n E x p e r i m e n t s e m p l o y i n g o r i e n t a t i o n c o n t r o l l e d b i c r y s t a l s h a v e r e v e a l e d d e f o r m a t i o n a n d f r a c t u r e b e h a v i o r o f m a t e r i a l s w i t h s i n g l e b o u n d a r i e s a n d i t s r e l a t i o n t o t h e b o u n d a r y s t r u c t u r e / l 3 / . H o w e v e r , e f f e c t s o f b o u n...

A C f E R I A L L U C I F E R A S E : B I O L U M I N E S C E N C E E M I S S I O N U S I N G L U M A Z I N E S A S S U B S T R A T E S P e t e r M a c h e r o u x a n d S a n d r o G h i s l a U n i v e r s i t y o f K o n s t a n z , F a c u l t y o f B i o l o g y , P . O . B o x 5 5 6 0 , D 7 8 4 3 4 K o n s t a n z , G e n n a n y J . W o o d l a n d H a s t i n g s H a r v a r d U n i v e...

abstract attention deficit hyperactivity disorder (adhd) is a common mental illness in children, so it is very important to identify effective and permanent treatment. the aim of the present research is to compare the efficacy of individual play therapy and play therapy with family therapy on behavioral problems’ reductionin adhd children. twenty 7-12-year- old school children with adhd were se...

E n e r g y i s t h e p r i m a r y a n d m o s t u n i v e r s a l m e a s u r e o f a l l k i n d s o f w o r k b y h u m a n b e i n g a n d n a t u r e . E v e r y t h i n g t h a t h a p p e n s i n t h e w o r l d i s t h e e x p r e s s i o n o f f l o w o f e n e r g y i n o n e o f i t s f o r m s . I f t h e q u e s t i o n i s a s k e d a s t o w h a t e n e r g y s o u r c e w i l l...