we aimed to compare the therapeutic effect of avonex (av), betaferon (be) & rebif (re) on the expanded disability status scale (edss) in multiple sclerosis (ms). ninety patients referring to farshchian hospital were entered in this study. the patients were divided into three equal groups: group 1 received av, group 2 received re and group 3 received be, and after 24 months, comparison was done ...

pollutants of various sources and nature, including heavy metals, find their way into the haraz river .cadmium (cd) and lead (pb) concentrations and their fluctuations in the tissues of several fish species in the lower part of the river were investigated. the fish samples were caught by using electroshoker. using f.test and anova indicated different but significant , concentration of,these hea...

the aim of this study was to investigate the possibility of explaining psychological resilience based on self-efficacy in athlete and non-athlete university students. a sample of 403 (198 females and 205 males) athlete and non-athlete university students, who were selected via purposive sampling procedure, completed resilience and self-efficacy scales. regression analysis, one-way anova, and t ...

One of the primary purposes for preparing an environmental assessment (EA) is to determine whether or not a proposed action will have a significant impact on the human environment and therefore require the preparation of an environmental impact statement (EIS). As defined in 40 CFR 1508.13, a finding of no significant impact (FONSI) is a document that briefly presents the reasons why a federal ...

In this work, we investigate how the entry of ride-sharing services influences the rate of alcohol related motor vehicle fatalities. While significant debate has surrounded ride-sharing, limited empirical work has been devoted to uncovering the societal benefits of such services (or the mechanisms which drive these benefits). Using a difference in difference approach to exploit a natural experi...

Riemannian spaces are described by nonorthogonal curvilinear coordinates. We generalize one-way wavefield extrapolation to semiorthogonal Riemannian coordinate systems that include, but are not limited to, ray coordinate systems. We obtain a one-way wavefield extrapolation method that can be used for waves propagating in arbitrary directions, in contrast to downward continuation, which is used ...

Using the framework introduced by Rawley and Colonius [2] we construct a nonreflecting boundary condition for the one-way wave equation spatially discretized with a fourth order centered difference scheme. The boundary condition, which can be extended to arbitrary order accuracy, is shown to be well posed. Numerical simulations have been performed showing promising results.