We use the measures of Li and rotational velocities in F Hyades stars to assess the role of the winddriven meridian circulation and of shear turbulence in the transport of angular momentum in stars of different masses. Our models include both element segregation and rotation-induced mixing, and we treat simultaneously the transport of matter and angular momentum as described by Zahn (1992) and ...

The incommensurate magnetic response of the normal-state cuprate perovskites is interpreted based on Mori’s memory function approach and the t-J model of Cu-O planes. In agreement with experiment the calculated dispersion of the susceptibility maxima has the shape of two parabolas with upward and downward branches which converge at the antiferromagnetic wave vector. The maxima are located at ( ...

in this research, aluminizing packs containing naf and nh4cl activators were used for aluminizing of pure titanium samples at 1100 ºc. the results showed that the layers of tial3, tial2, γ-tial, α2-ti3al, and α-solid solution are formed on titanium samples in both cases. however, the weight gain and the thickness of tial3 layer in treated samples with nh4cl activator are greater than those when...

Hot-dip galvanized steel is widely used for the construction of underground structures, thanks to presence a zinc coating that able protect carbon substrate through formation corrosion products layer. Soil very complex process and hence it difficult predict resistance specific component because many factors can directly influence behavior material immerged in soil. This work focused on effect c...

Considering the effects of hot ions and Lorentz force, a numerical study on the properties of solitary kinetic Alfvén waves ~SKAWs! in the inertial limit region in the magnetosphere is presented. In contrast to the results obtained by Hasegawa and Mima @Phys. Rev. Lett. 37, 690 ~1976!#, Shukla et al. @J. Plasma Phys. 28, 125 ~1982!#, and Wu et al. @Phys. Plasmas 3, 2879 ~1996!#, both hump and d...