We consider plane wave modes in ultracold, but not quantum degenerate, dipolar Fermi gases the hydrodynamic limit. Longitudinal waves present anisotropies both speed of sound and their damping, experience a small, undulatory effect flow velocity. Two distinct types shear appear, ``familiar" one, another that is accompanied by nontrivial density temperature modulations. propose these as an exper...

The physical adsorption of hydrogen sulfide and carbon dioxide gases on the zigzag (5,0) carbon nanotubes doped with nitrogen was investigated through the application of B3LYP/6-31G* at the level of theory on Gaussian 03 software. A variety of stable and high abundance structures of nitrogen doped carbon nanotubes were considered in order to study the interaction between the mentioned gases in ...

this research was performed to study the effect of murray red gum tree age (4, 6, 8 years) on the chemical components, viscosity and the cellulose degree of polymerization. the eucalyptus trees were cut at the ages of 4, 6, and 8 from hand planted forests. the contents of cellulose, hemicellulose, lignin, extractives and ash for each age were then determined. the results show that with increasi...

increase of environmental pollution and restricted emission legislations have forced companies to produce automobiles with lower air pollutants. in this respect, discharge of blowby gases into the environment has been prohibited and their recirculation into the combustion chamber is proposed as an alternative solution. in addition, using egr technique to control and reduce nitrogen oxides in in...

In this study, the effect off adding SiO2 nanoparticles on the viscosity of base fluid is investigated experimentally. Base fluids are chosen among common heat transfer fluids such as ethylene glycol, transformer oil and water. In addition different volume percentages of ethylene glycol in water are used as ethylene glycol-water solution. In every base fluid different volume fractions of SiO2 n...

We investigated the pressure dependence of gas flow and field ion intensity a coaxial source operating at room temperature over wide range, testing various gases ionisation voltages. Flow conductance measurements taking into account different gases' viscosity molecular mass consistently exhibit generic pattern. Three regimes appear with increasing upstream pressure. Since supplies locally, very...

As industries develop and standards of living increase, people are being exposed to harmful gases in various places. In particular, exposure multiple facilities is more dangerous as it results many casualties. Training officers reduce the damage caused by very important. Although recommended conduct training an environment that closely resembles actual one, not possible train using gases. perfo...