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 ...

plant growth-promoting rhizobacteria (pgpr) is an alternative to chemical pesticides against harmful microorganisms especially soil-borne diseases. rhizoctonia solani is one of the most important soil-borne fungal pathogens that causes serious damages to important crops. in this study, to screen successful pseudomonas bacterial isolates, the inhibition of pathogen growth was evaluated in-vitro....

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 ...

mechanisms of drought stress tolerance of gf677 rootstock, peach and almond hybrid, (prunus persica × prunus amygdalus) were studied under in vitro conditions. plantlets of gf677 rootstock were subcultured into the murashige and skoog (ms) solid proliferation medium containing 1 mg/l ba (6-benzyladenine) and 0.1 mg/l naa (naphthaline acetic acid) in four drought stress levels 0 (control), 10, 2...

the aim of this research was to survey of using soy protein isolates and tragacanth gum as egg substitutes in mayonnaise formulation. the mayonnaise prepared with difierent compositions of soy protein isolate, egg, and tragacanth by applying the optimal mixture design method and effect of this substitution on its stability, heat stability, viscosity, texture, physicochemical and sensory charact...

A t heo rem p r o v i n g sys tem has been programmed f o r a u t o m a t i n g m i l d l y complex p r o o f s b y s t r u c t u r ­ a l i n d u c t i o n . One pu rpose was t o p r o v e p r o p e r ­ t i e s o f s i m p l e f u n c t i o n a l p rograms w i t h o u t l o o p s o r a s s i g n m e n t s . One can see t h e f o r m a l sys tem as a g e n e r a l i z a t i o n o f number t h e ...

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...

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 ...

in order to investigate the effects of municipal waste compost and benefit fungi of trichoderma species on seedling emergence parameters, growth and some micronutrients uptake of garden cress a pot experiment was carried out in factorial arrangement based on randomized complete block design with 3 replications. treatments consisted of three levels of municipal waste compost (15, 30, 45 mg ha-1 ...

the district of miyān kūh in the ardal town,chahār mahāl bakhtiari province, because of its high mountains, deep valleys and the fields among small mounts, being placed in the path of the was dering tribes has been the focus of the attention. the rigion has two different viewpoint. one part featuring the mounts chēhēl cheshme and gereh with the altitude of more than 3500 m., has cold winter and...