This Paper p resents an a n a l y s i s o f e x i s t i n g p a c k e t radio systems and equipment (2 Meter AFSK). Both dual and s i n g l e frequency repeater e f f i c i e n c i e s are analyzed. The r e s u l t s d e m o n s t r a t e the r e l a t i v e i n e f f i c i e n c i e s o f t h e e x i s t i n g networks. T h e s e i n e f f i c i e n c i e s r e d u c e the e f f e c t i v e ca...

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 ...

evaluation of changes present in soil and water resources due to operation implement of floodwater spreading is necessary to assess their positive or negative resultant effect. rate of the internal sediment to diversion spreader channels, surface sedimentation and aggregation of the spreading field depth are most important effective attributes on the yield of floodwater spreading systems. these...

to determine the usefulness of the time intervals obtained from the first derivative of apex cardiogram (da/dt) in assessing contraction and relaxation, 20 hemodynamically and angiographical1y investigated patients with coronary artery disease and 29 patients with hypertensive heart disease were studied. as a control group there were used 50 normal subjects. since contraction and relaxation is ...

L a n g u a g e i n t e r a c t i o n (L I ) a s a p a r t o f i n t e r p e r s o n a l c o m m u n i c a t i o n i s c o n s i d e r a b l y i n f l u e n c e d by p s y c h o l o g i c a l a n d s o c i a l r o l e s n f t h e p a r t n e r s a n d t h e i r p r a g m a t i c g o a l s . T h e s e a s p e c t s o f c o m m u n i c a t i o n s h o u l d be a c c o u n t e d f o r w h i l e e ...

water is the most important factor for agriculture development in iran. accordingly the optimal consumptione of water is very important. using pressurized irrigation system is one of the methods to improve agricultural water management. the objecttives of this research were to compare two irrigation methods of furrow and trickle irrigation systems impacts on quantity and quality characters of s...

A computer ized f l ow v i s u a l i z a t i o n techn ique capab le o f q u a n t i f y i n g t h e f l o w f i e l d a u t o m a t i c a l l y has been developed. T h i s techn ique uses a f t e r g l o w i n g e f f e c t o f o p t i c a l l y a c t i v a t e d phosphorescent p a r t i c l e s t o r e t r i e v e v e c t o r i a l i n f o r m a t i o n on each t r a c e . By u s i n g r h i ...

the effect of in ovo injection of olive leaf extract as a growth promoter antibiotic was studied on hatchability, day old chick weight, growth rate, feed conversion ratio, mortality and carcass efficiency. three hundred and twenty eggs were divided into 4 groups, and injected on day 18. treatments consisted of: 1- control (no injection). 2- injection of 1 ml of distilled water in air sac (dw), ...

objective: this study aimed to determine prevalence and predisposing factors of psychiatric disorders among infertile in comparison to fertile women. materials and methods:  by a descriptive- analytic study in vali-e-asr reproductive health research center, 300 women entered the research.   symptom checklist -90 -revised (scl-90-r) test and structured researcher questionnaires were applied for ...

the main objective of this study is to investigate the production factors productivity in large manufacturing sub-sectors. for this purpose, using statistical data for period 1972-2004, we have tried to study and analyze the trend and level of production factors productivity (partial and total productivity) in each sub-sectors classified according to isic two digits code. the average and margin...