Abstract In order to enable a robot do the omni-directional mobility for inspection in pipeline of Gas Insulation Switchgear, negative pressure adsorption is designed. Firstly, mechanical structure was designed based on adsorption. The internal surface motion model built, and variable control method proposed by analysis. Simulations experiments showed that could steadily adsorb any position pip...

Production of gases from gas-condensate reservoirs are known to bear certain challenges largely due to the formation of retrograde condensates that hinder gas flow. The drop out of this liquid creates flow regions that are characterized by the liquid saturation as it affects the mobility of the two phase flow, thereby preventing the effective modeling of well productivity. In this study, a pred...

in this study, the effectiveness of kiwi shell was investigated to reduce the mobility of lead and cadmium in clay soil in different intervals. for this purpose a clay soil sample was contaminated with lead and cadmium in distinct dishes with 10 and 600 ppm concentrations respectively and mixed with 5% kiwi shell. samples were placed in incubator, and then sampling of soil in incubator was perf...

The challenge to provide seamless mobility in the near future emerges as a key topic in various standardization bodies. This includes first of all the support of seamless handover between homogeneous networks. Distinct technologies — such as IEEE 802.11WLANs (Wi-Fi) and IEEE 802.16 MANs (WiMAX)—have recently augmented such support to existing standards to enable seamless homogeneous handover. C...

catalysts with the formula of laco(1+x)o(3+δ), where 0 ≤ x ≤ 1, were studied for oxidation of co and c2h6 in a synthetic exhaust gas, comprising 6.0 % co and 0.2 % c2h6 in ar. ethane was selected as a model for hydrocarbons in the exhaust gas. the performance of catalysts is correlated to their properties, particularly their redox in oxidizing and reducing atmospheres. xrd patterns show perovsk...

When oil fields fall during their lifetime below the bubble point gas comes out of solution. The key questions are at which saturation becomes mobile (“critical saturation”) and what mobility is, because reduces production significantly. traditional view is that phase once bubbles grow or expand to a size where they connect form percolating path. For typical 3D porous media corresponding this p...

We calculate the electron mobility for a quantum Lorentz model, which provides a realistic description of electrons in Helium gas, to second order in the gas density. We show that this provides sufficient theoretical information to allow for an experimental observation of the famous logarithmic term in the density expansion. Detailed predictions, and a discussion of a suitable parameter range, ...