Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume...

Porosity sealing is done through the process of vacuum impregnation. Vacuum impregnation is a preferred OEM process that seals porosity and leak paths...

Effective porosity is most commonly considered to represent the porosity of a rock or sediment available to contribute to fluid flow through the rock or...

must be eliminated. They are broken down into five main categories: gas porosity, shrinkage defects, mould material defects, pouring metal defects, and...

Gas porosity is the fraction of a rock or sediment filled with a gas. Determining the true porosity of a gas filled formation has always been a problem...

of varying sizes as well as organic compounds. In order to understand porosity better a series of equations have been used to express the quantitative...

Porosity Storage Reservoirs are man-made water storage reservoirs located in shallow alluvial (sand and gravel) deposits. The porosity, or void space,...

field of formation evaluation, porosity is one of the key measurements to quantify oil and gas reserves. Neutron porosity measurement employs a neutron...

Hydrogen gas porosity is an aluminium casting defect in the form of a porosity or void in an aluminium casting caused by a high level of hydrogen gas...

type logs where resistivity logs and porosity logs were recorded in one pass in the borehole. The two types of porosity logs (acoustic logs and nuclear logs)...

There are low, medium and high hair porosity. Low hair porosity is when the hair cuticles are tightly shut. Low porosity hair has difficulty obtaining moisture...

Stroke 2016. Liebeskind DS, Agbayani E, Woolf GW, et al. Imaging of clot porosity prior to endovascular thrombectomy. Cerebral Large Artery Disease Posters...

Spain's cultural ties with Latin America, its geographical position, the porosity of its borders, the large size of its underground economy and the strength...

is a matter of answering two questions: What are the lower limits for porosity, permeability and upper limits for water saturation that permit profitable...

composition of the aquifer. The most important properties of the aquifer are porosity and specific yield which in turn give its capacity to release the water...

mitigating Kirkendall porosity. Controlling annealing temperature is another method of reducing or eliminating porosity. Kirkendall porosity typically occurs...

on the fraction f of the volume occupied by voids. This number f is the porosity of the medium; the wetted length is then x = i f = S f t . {\displaystyle...

aquifer, releasing relatively large amounts of water (up to the drainable porosity of the aquifer material, or the minimum volumetric water content). In isotropic...

Pore structure is a common term employed to characterize the porosity, pore size, pore size distribution, and pore morphology (such as pore shape, surface...

services such as crop production, are texture, structure, bulk density, porosity, consistency, temperature, colour and resistivity. Soil texture is determined...

but in practice most aerogels exhibit somewhere between 90 and 99.8% porosity. Aerogels have a porous solid network that contains air pockets, with the...

density of a metal sample. In cases where porosity still remains present after the degassing process, porosity sealing can be accomplished through a process...

10% vol. fraction porosity, models begin to deviate significantly. Different models, such as the rule of mixtures for low porosity, two-material matrices...

empty space from which atoms were leached/diffused away. The way that porosity develops during the dealloying process has been studied computationally...

depends on the porosity and pore pressure; higher porosity decreases the sediment strength (thus increases the shear stress τB). Porosity may vary through...

lower permeability, while in unconventional reservoirs the rocks have high porosity and low permeability, which keeps the hydrocarbons trapped in place, therefore...

which can range from 0 (completely dry) to the value of the materials' porosity at saturation. It can be given on a volumetric or mass (gravimetric) basis...

reservoirs are considered as a dual-porosity reservoirs. Dual porosity reservoirs are reservoirs in which porosity related to cleats (natural fractures)...

tools that are commonly used to calculate porosity, the other two being sonic logging and neutron porosity logging The tool was initially developed in...

Thermoporometry and cryoporometry are methods for measuring porosity and pore-size distributions. A small region of solid melts at a lower temperature...