in this article, the second quantization method has been used to investigate some thermodynamic properties of spin-polarized metallic nanowire in the presence of magnetic field at zero temperature. we have been observed that in different magnetic field, the equilibrium energy of system increases as the density increases. the spin-polarization parameter corresponding to the equilibrium state of ...

Macrophages are key components of the innate immune system. The variability macrophage’s participation in tumor progression, determined by their functional polarization, opens up a wide prospect for modulating profile, primarily direction increasing antitumor activity. purpose study was to provide up-to-date data on process macrophage mechanisms its regulation, polarization markers and inductio...

In this paper, a millimeter-wave printed quadrupole antenna is proposed. It consists of two symmetric dipoles that make the radiating power omnidirectionally. Such an arrangement eliminates influence ground as reflector. Simulation results show exhibits broad impedance bandwidth and enhanced gain compared to conventional dipoles. More interestingly, configuration includes integrated feed networ...

The high-frequency performance of the reflector antennas is mainly limited by the surface. It has been shown that distortions on different regions of the reflector surface can have different effects on the radiation performance. In other words, degradation of the radiation pattern due to the presence of surface distortions is sensitive to the location and behavior of the surface distortion prof...

PSR B0818−41 is one of the few pulsars which show multiple drift regions having well defined phase relationship. In this paper we report new results from the multifrequency observations of this pulsar with the Giant Metrewave Radio Telescope (GMRT). We determine the mean flux of the pulsar at multiple frequencies and find evidence for a low frequency turnover in its spectrum. Significant linear...

The Fourier modal method (FMM) is certainly one of the most popular and general methods for modeling diffraction gratings. However, non-lamellar gratings it associated with a staircase approximation profile, leading to poor convergence rate metallic in TM polarization. One way overcome this weakness FMM use fast factorization (FFF) first derived differential method. That approach relies on defi...

The density and polarization profiles of the dipolar hard ellipsoids confined between hard walls are studied using the density functional theory (DFT). The Hyper-Netted Chain (HNC) approximation is used to write excess grand potential of the system with respect to the bulk value. The number density is expanded up to zero and first order in polarization to find the results. For the zero order in...