The mechanisms wh(eeby, dietary sodium restriction leads to decreased arterial blood pressure is obscure. Previously reported studies of patients with arterial hypertension showed a lessened pressor response to norepinephrine after sodium restriction. In the present investigations, reduction in pressor response to norepinephrine during the low sodium period was observed only occasionally; sodiu...

The performance of MSU-S and its forms modified with phosphotungstic acid (HPW) and nickel (Ni) for the desulfurization and denitrogenation of model diesel fuel were studied. According to the results of the characteristic tests (N2 adsorption-desorption, XRD, SEM, and NH3-TPD), heteropoly acid incorporation causes higher acidity along with a negligible loss of structural a...

abstract: in most industries the cost of raw materials and component parts constitutes almost 60% percent of cost of a product (in some industries up to 80%). in this situation, proper sourcing can play a key role in an organization's efficiency and effectiveness, because it has a direct effect on cost reduction, profitability and flexibility of a company. in this paper, determining the op...

abstract drastic precipitations in unmorally times always are one of the important factors that created abundant damages in different geographical areas. in this research, three precipitations that occurred in summer 2009 in mashhad were investigated. the investigation of variation graphs of meteorological parameters show significant decreasing of air pressure and temperature and increasing of ...

In this paper, a novel approach based on timedomain pitch-synchronous point-to-point (TD-PSPTP) model for speech synthesis is presented. Compared to TD-PSOLA, which is currently one of the most popular concatenation methods, TD-PSPTP model provides a wider range of pitch and time modification. The quality of synthesized speech by TD-PSPTP shows to be high, especially its capability of overcomin...

We study a model for the effect of learning on a population of asexually reproducing individuals . While current models are usually based on simulations of the actual hypothetical organisms, we adopt a classic population genetic approach, which deals directly with gene frequencies. This allows us to investigate the model in great detail, obtaining results which are difficult to obtain using oth...