The penetration rates of 10 hydrophobic solvents through the excised abdominal rat skin were quantitatively determined by using the in vitro method reported previously. The hydrophobic solvents studied were benzene, toluene, ethylbenzene, o-xylene, styrene, n-pentane, 2-methylpentane, n-hexane, n-heptane and n-octane. There was a great diversity in the ability of the hydrophobic solvents to pen...

Solution is developed for the build!up\ steady and post!arrest dissipative pore ~uid pressure _elds that develop around a conical penetrometer advanced in a poroelastic medium[ The analog with cone penetrometer testing is direct\ and is used to enable continuous distributions of permeability and di}usivity to be determined\ with depth[ Solution for a point normal dislocation migrating in a poro...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract A series of Large Eddy Simulations (LES) are performed to investigate the penetration of starting buoyant ...

This paper thoroughly discusses the essential issues remaining in mobile phone technologies which impede the realization of mobile phone based traffic state estimation systems (M-TESs). Concretely, the inherent issues in mobile phone based applications, namely low and uncertain penetration rate issues, which affect the M-TES’s effectiveness, are resolved. A unique GA-based velocity-density esti...

a r t i c l e i n f o In many mining, civil, and petroleum engineering applications diamond bit drilling is widely used due to high penetration rate, core recovery and its ability to drill with less deviation. Recently, many research have been conducted to estimate the penetration rate of diamond drilling which can be considered as one of the most important parameters in project planning and co...

The rate of penetration (ROP) is one of the vital parameters which directly affects the drilling time and costs. There are various parameters that influence the drilling rate; they include weight on bit, rotational speed, mud weight, bit type, formation type, and bit hydraulic. Several approaches, including mathematical models and artificial intelligence have been proposed to predict the rate o...