نظریہ فوقیت یا نسلی برتری: مذاہب عالم اور اسلامی تعلیمات کی روشنی میں ایک جائزہ

Race represents a specific caste, creed and a generation of a common ancestor. It has been a source of identification among different tribes and group of people, since humankind started life on this earth. With the passage of time different races have started using their racial backgrounds as negative sentiments which created superiority and inferiority complexes among people. Concepts of chosen people aroused in different races which created great gap, differences and hate in the society. The current research work is based upon the concept of superiority in Hinduism and Judaism, which will be further reviewed in the light of Islamic teachings.

Steady Flow of Fluids With Variable Viscosity

Nanofluids have wide range applications in processes involving heat transfer due to their proficient thermal conductivity. Such fluids exhibit substantial viscosity variation with temperature. This dissertation presents oblique stagnation point flow of variable viscosity nanofluid over a stretching surface. Porous medium, magnetic field, heat generation, thermal radiation and homogeneous-heterogeneous effects along with partial slip, thermal slip and convective surface are considered. Micro-rotation phenomenon is also fused with nanofluid flow comprising micropolar nanofluid. Nanofluid thermal conductivity is estimated by Maxwell-Garnett model, Hamilton Crosser thermal conductivity model is also employed when shape effects of nanoparticles are considered. Flow problems are first modeled and afterwards converted to non-linear system of ODEs via appropriate similarity transformations. Numerical solutions are obtained via stable and efficient Runge-Kutta-Fehlberg scheme with shooting quadrature and Keller-Box scheme. The impact of key emerging dimensionless parameters on non-dimensional normal, tangential velocity constituents, temperature, shear stress (at wall), heat flux along with streamlines distribution is visualized by graphs.