Results 21 to 30 of about 1,459,501 (364)

Effect of permeability enhancers on paracellular permeability of acyclovir

open access: yesJournal of Pharmacy and Pharmacology, 2016
AbstractObjectivesAccording to Biopharmaceutics Classification System (BCS), acyclovir is a class III (high solubility, low permeability) compound, and it is transported through paracellular route by passive diffusion. The aim of this study was to investigate the effect of various pharmaceutical excipients on the intestinal permeability of acyclovir ...
Ates, Muge   +2 more
openaire   +3 more sources

Mineral compositions and microstructural characteristics of the tight sandstone reservoir in the Sulige area and their potential influence on hydraulic fracturing

open access: yesShuiwen dizhi gongcheng dizhi, 2023
Tight sandstone gas is an important unconventional natural gas resource. Mineral characteristics of the tight sandstone not only affect the occurrence of gas, but also have a significant impact on the hydraulic fracturing effectiveness.
Peiyue LI   +4 more
doaj   +1 more source

The Intestinal Barrier and Current Techniques for the Assessment of Gut Permeability

open access: yesCells, 2020
The intestinal barrier is essential in human health and constitutes the interface between the outside and the internal milieu of the body. A functional intestinal barrier allows absorption of nutrients and fluids but simultaneously prevents harmful ...
I. Schoultz, Å. Keita
semanticscholar   +1 more source

Synchronous injection-production energy replenishment for a horizontal well in an ultra-low permeability sandstone reservoir: A case study of Changqing oilfield in Ordos Basin, NW China

open access: yesPetroleum Exploration and Development, 2020
It is difficult to build an effective water flooding displacement pressure system in the middle section of a horizontal well in an ultra-low permeability sandstone reservoir.
Jing WANG   +9 more
doaj   +1 more source

Method for measurement of wet gas in gas field by combining throttle flowmeter and vortex flowmeter

open access: yesYou-qi chuyun, 2021
In order to solve the problem of single well without liquid phase measurement in Sulige Gas Field under the process mode of interwell series connection and wellhead wet gas measurement, a method of combining throttle flowmeter and vortex flowmeter to ...
Chuntao ZHANG   +4 more
doaj   +1 more source

NOTIONAL PERMEABILITY [PDF]

open access: yesCoastal Engineering Proceedings, 2012
Different layer design of a rock slope and under layers has a large effect on the strengths on the rock slope itself. In the stability formula developed of VAN DER MEER [1988] this effect is represented by the term Notional Permeability with symbol P.
Kik, R. (author)   +4 more
openaire   +2 more sources

One-dimensional fluid diffusion induced by constant-rate flow injection: Theoretical analysis and application to the determination of fluid permeability and specific storage of a cored rock sample [PDF]

open access: yes, 2004
We describe the conceptual design and first application of a new method for simultaneously measuring the fluid permeability and specific storage of a rock sample.
Song, I.   +5 more
core   +1 more source

Volume fracturing and drainage technologies for low-pressure marine shale gas reservoirs in the Ordos Basin

open access: yesNatural Gas Industry B, 2021
There are abundant natural gas resources in the marine shale gas reservoir of Middle Ordovician Wulalike Formation in the Ordos Basin, which is an important resource base for PetroChina Changqing Oilfield Company to increase the reserves and production ...
Suotang Fu   +5 more
doaj   +1 more source

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