we have developed a three level implicit method for solution of the helmholtz equation. using the cubic spline in space and nite dierence in time directions. the approach has been modi ed to drive numerov type nite dierence method. the method yield the tri- diagonal linear system of algebraic equations which can be solved by using a tri-diagonal solver. stability and error estimation of the...

the effect of phenylen di-isothiocyanate (jonit) in the mass treatment of various intestinal helminthiases was evaluated among the inhabitants of a village in dezful, southwest iran. stool samples collected and examined from 17 persons showed infection rates of 80% for ancylostoma duodenale, 57.3% for ascaris, 46.7% for trichostronylus spp. and 22.8% for h. nana.seventy- one persons (41 childre...

In the current work, a framework is presented for amine solvent selection in gas treating process. Since the appropriate decision making in this field affects the capital and operational costs, multi attribute decision making (MADM) techniques were used to rank alternatives. The determination of criteria and alternatives is the most important aspect in the MADM. Criteria were divided into two c...

Henrich and Boyd (2002) were the first to propose a formal model of the role of attraction in cultural evolution. They came to the surprising conclusion that, when both attaction and selection are at work, final outcomes are determined by selection alone. This result is based on a determistic view of cultural attraction, different from the probabilistic view introduced in Sperber (1996). We def...

Diffusion-MRI provides a unique window on brain anatomy and insights into aspects of brain structure in living humans that could not be studied previously. There is a major effort in this rapidly evolving field of research to develop algorithms that provide detailed information on the white matter fibre architecture and disorders in the brain. High angular resolution diffusion imaging (HARDI) p...

Introduction Neospora caninum is an apicomplexan protozoon causing abortion in cattle worldwide. Infected cows represent economic losses due to fetal abortion, stillbirth, clinical and subclinical disease, impaired milk production, neonatal deaths, reduced fertility and reduced value of infected cows. The abortion caused by neosporosis occurs at 5-6 months gestation. Serological techniques are ...