In this paper, we study obliquely propagating of small amplitude ion acoustic waves (IAWs) in non-relativistic cold plasma in which the ions are viscous fluid, electrons distribution is Maxwellian and external magnetic field varies in space. Using the reductive perturbation method, a nonlinear equation which complies with Korteweg–de Vries–Burgers (KdVB) equation is derived for this […]
An atmospheric pressure plasma microjet device with a tapered ground electrode and dielectric barrier is developed. The effects of the powered electrode geometry and input power on the specifications of the launched RF plasma jets are investigated. Needle-powered electrodes with different types, shapes, lengths, and diameters, such as perforated and un-perforated hollow cylindrical tubes with […]
The use of clay-based nanocomposites as bioadsorbents was considered in this research due to their high mechanical and chemical stable properties, cheapness, compatibility, and abundance in nature. Thermal solution method was used to produce montmorilonite-alginate-zein (MMTALgZ) nanocomposites to remove tartazine dye. Zein and alginate polymers were used to modify the surface of clay. The samples […]
In this research, we investigate the bending of photon light and/or time-like geodesics within the context of four-dimensional space-time geometry, specifically in the presence of topological defects. These topological defects manifest as cosmic string space-time configurations, encompassing screw dislocation, spiral dislocation, and spacelike dislocation. Our primary objective is to determine the extent of deflection experienced […]
The resonance effect happens in very number of natural oscillators and very important in a lot of phenomena. In the surface of a hydride metal, the resonance effect causes the kinetic energy of electrons is increased until they can cooperate inverse-β interaction. This reaction can be done in the electrolysis of palladium and platinum in […]
In this research, titanium dioxide (TiO2) nanopowder, TiO2-Ag (TA) and TiO2-Ag-CH (TACH) nanocomposite were produced by the hydrothermal method. After the synthesis of nanoparticles and nanocomposites, the skull titanium mesh implant pieces were immersed in solutions containing nanopowders of TiO2, TA, and TACH and coated using the dip coating method. Structural, chemical, and antibacterial properties […]
Tungsten with its superior features such as high melting point and relatively high thermal conductivity is significant for many high temperature applications. The materials, including tungsten, which have important mechanical properties should also be investigated by their radiation attenuating abilities. The goal of the study is to contribute to the carried out studies from a […]
In this work atmospheric pressure plasma has been used for the synthesis of silver (Ag) nanoparticles immersed in liquid. we study the effects of various parameters such as the electrolyte, the process time, and the applied electric current on the synthesis of Ag nanoparticles. The products are analyzed by transmission electron microscopy (TEM), X-ray diffraction […]
A modified Rayleigh-Taylor (RT) instability equation is derived using a three-fluid Hall thruster plasma model by including multi-ionized ions to study the growth rate of the RT instability. For a simplified plasma density and electron drift velocity axial profile, the growth rate for an unstable wave and the condition leading to this instability are discussed. […]
The article discusses some aspects of modeling the dynamics of high-gradient pulse processes accompanying technologies using electrical discharges in a liquid medium. Due to the presence of high pressure, these technologies are successfully used for the destruction and crushing of solid materials, the processing of mineral environments, the intensification of heat exchange processes, etc. The […]
