Insights, Trends and Challenges Associated with Measuring Coal Relative Permeability

Permeability and Relative Permeability in Rocks

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...

Chronic Endometritis: Old Problem, Novel Insights and Future Challenges

Background/Aims: Chronic endometritis (CE) is a poorly investigated pathology that has been related to adverse reproductive outcomes, such as implantation failure and recurrent miscarriage. In this paper we aim to provide an overview about diagnosis, etiology, pathophysiology and treatment of CE, its impact on endometrial microenvironment and how it may be associated with infertility. Methods: ...

Gas-liquid Relative Permeability Estimation in 2D Porous Media by Lattice Boltzmann Method: Low Viscosity Ratio 2D LBM Relative Permeability

This work is a primary achievement in studying the CO2 and N2–oil systems. To predict gas-liquid relative permeability curves, a Shan-Chen type multicomponent multiphase lattice Boltzmann model for two-phase flow through 2D porous media is developed. Periodic and bounce back boundary conditions are applied to the model with the Guo scheme for the external body force (i.e.,...

Measuring Anonymity with Relative Entropy

Anonymity is the property of maintaining secret the identity of users performing a certain action. Anonymity protocols often use random mechanisms which can be described probabilistically. In this paper, we propose a probabilistic process calculus to describe protocols for ensuring anonymity, and we use the notion of relative entropy from information theory to measure the degree of anonymity th...

Relative permeability estimation