Important features of the topology of the pore space of rocks can be usefully quantiied by analyzing digitized images of rock cross sections. One approach computes statistical correlation functions using modern image processing techniques. These correlation functions contain information about porosity, speciic surface area, tortuosity, formation factor, and elastic constants, as well as the uid...

In this paper, we present a semi-analytical model for determining the magnetic and electromagnetic characteristics of spoke-type permanent magnet (STPM) machine considering magnet segmentation and finite soft-material relative permeability. The proposed model is based on the resolution of the Laplace’s and Poisson’s equations in a Cartesian pseudo-coordinate system with respect to the relative ...

Among the many parameters affecting the design of hydraulic structures on fissured rocks are orientation of principal permeability axes and degree of anisotropy of fissured rocks. Geological explorations rarely provide this type of information. If at all the information is available, methods employed are computationally cumbersome and inefficient. A new concept of simple equations and geometric...

Permeability is the ability of porous rock to transmit fluids and one of the most important properties of reservoir rock because oil production depends on the permeability of reservoirs. Permeability is determined using a variety of methods which are usually expensive and time consuming. Reservoir rock properties with image analysis and intelligent systems has been used to reduce time and money...

the permeability is a main property of oil reservoirs that shows the ability of rocks in the conduct of fluids such as oil, water and gas through the pore spaces of reservoir. the determination of the permeability is a crucial task in reserve estimation, production and development of oil reservoirs. due to this, an accurate estimate of such important reservoir rock parameter should not be made ...

may give an indication of the wide appeal which this book should have. These headings are: Significance of Permeability Studies; Methods of Studying Membrane Permeability; Equilibrium Conditions of Cells; Some Equations used in Permeability Studies; The Nature of the Process of Diffusion; The Structure of the Plasma Membrane; The Interpretation of Permeability Measurements; Permeability to Non-...

may give an indication of the wide appeal which this book should have. These headings are: Significance of Permeability Studies; Methods of Studying Membrane Permeability; Equilibrium Conditions of Cells; Some Equations used in Permeability Studies; The Nature of the Process of Diffusion; The Structure of the Plasma Membrane; The Interpretation of Permeability Measurements; Permeability to Non-...

objective (s) porin is a mitochondrial outer membrane channel, which usually functions as the pathway for the movement of various substances in and out of the mitochondria and is considered to be a component of the permeability transition (pt) pore complex that plays a role in the pt. we addressed the hypothesis that porin interacts with other mitochondrial proteins after ischemic injury. mater...