background: pregnancies with early onset fetal growth restriction have poor perinatal outcome. sildenafil citrate (pde -5 inhibitor) as a vasodilator increases uteroplacental blood flow and potentiates fetal growth. case presentation: in this study, a case was examined and sildenafil was administered for her. it was found that sildenafil improved the uterine blood flow with a favorable fetal ou...

The paper is devoted to the generalized wall functions of Robin–type and their application to near–wall turbulent flows. The wall functions are based on the transfer of a boundary condition from a wall to some intermediate boundary near the wall. The boundary conditions on the intermediate boundary are of Robin–type and represented in a differential form. The wall functions are formulated in an...

We investigate advection dominated accretion flows of matter in the vicinity of black holes, using the fully relativistic description in the frame of disk approximation. We also include some effects of the quasi-sphericity of the flow. We are interested in the spectra emitted by such flows and specifically, in the relativistic effects accompanying propagation of light. Using the ray shooting me...

mhd boundary layer flow of two phase model nanofluid over a vertical plate is investigated both analytically and numerically. a system of governing nonlinear partial differential equations is converted into a set of nonlinear ordinary differential equations by suitable similarity transformations and then solved analytically using homotopy analysis method and numerically by the fourth order rung...

The important step in the turbine aerodynamic design is generation of blade element profiles to achieve the required flow deflection and smooth flow acceleration with minimum losses. During profile generation, in addition to aerodynamic performance, additional constraints of thermal, structural and castability requirements need to be considered. Thus profile generation is a trade-off between co...

Environmentally friendly nature and the direct impact of gabion weirs on the quality parameters of rivers as well as simple design and construction of such structures, has putted them under consideration in the recent years. In this research, Hydraulic parameters of gabion crump weirs including water surface profile, discharge coefficient and through flow discharge are investigated numerically ...