Water permeability

This study aims to investigate the fouling mechanism, which mostly impacts the water permeability via empirical modeling. Normally, there are four different physical-based types of fouling: complete blocking, intermediate blocking, cake filtration and standard blocking or adsorption.

7p viyoko 24-09-2024 1 1   Download

Determine the coefficient of water permeability, waterproofing marks, chloride ion diffusion coefficients of some types of concrete commonly used in bridge construction subjected to pre-compressive and direct-compression loads. Develop a predictive model for life expectancy using reinforced concrete bridges taking into consideration the effect of the load according to the criteria of initial corrosion of reinforcement in concrete. Application of life expectancy for the structure of reinforced concrete bridges.

27p kequaidan7 01-09-2020 30 2   Download

The modeling and numerical simulation of mass transport in porous media is discussed in this work by using the so-called pore size distribution for computing transport properties. The pore-size distribution is a property of the pore structure of a porous medium. This can be used to estimate the different transport properties, amongst other, the permeability. By starting with a formula for the absolute permeability, the simulation of water and oil transport in reservoirs is considered by solving mass conservation equations with the help of the control volume method.

7p abcxyz123_02 03-03-2020 16 2   Download

Permeability is the indispensable parameter in oil and gas reservoir studies. In fact of researching and operating on oil and gas fields worldwide, there are many types of permeability. Each permeability type has a specific characteristic according to the study purpose. In this article, the specific characteristics of some typical permeability as gas permeability; water permeability, effective permeability; relative permeability … will be analyzed, especially concern to the role of each permeability type in oil reservoir study to assisting researchers has an overview to orient their study.

13p hulk1234 01-06-2018 22 2   Download

Previous results showed that mRNA encoding a putative aquaporin (AQP) (GenBankaccession number AF218314) is present in the tracheolar cells associated with female Aedes aegyptiMalpighian tubules. In this study, immuno-histochemistry detected the protein,AeaAQP, also in tra-cheolar cells, suggesting its involvement in water movement in the respiratory system. When expressed in Xenopus oocytes,AeaAQP increased the osmotic water permeability from15·10 )6 to 150 ·10 )6 mÆs )1 , whichwas inhibited by mercury ions. No permeability to glycerol or other solute was observed....

8p tumor12 20-04-2013 48 3   Download

The high water permeability of certain biological membranes is due to the presence of aquaporin water channel proteins. AQP1 was discovered in human red cells. AQP1 has been thoroughly characterized biophysically, and the atomic structure of AQP1 has been elucidated. Ten homologs have been identified in humans. These are selectively permeated by water (aquaporins) or water plus glycerol (aquaglyceroporins). The sites of expres-sion predict the clinical phenotypes in humans. Individuals lack-ing Colton blood group antigens have mutations in the AQP1 gene. ...

81p fptmusic 11-04-2013 35 4   Download

The water permeability of biological membranes has been a long-standing problem in physiology, but the proteins responsible for this remained unknown until discovery of the aquaporin 1 (AQP1) water channel protein. Peter Agre received Nobel prize in Chemistry in 2003 for this discovery.

32p mobifone23 21-01-2013 43 6   Download

Major burn is associated with decreased gut barrier function and increased bacterial translocation (BT). This study is to investigate whether commensal microflora induce host defense and decrease BT in burn mice. Methods: First, we treated Wild type (WT) mice with antibiotics in drinking water for 4 weeks to deplete gut commensal microflora. At week 3, drinking water was supplemented with lipopolysaccharide (LPS); a ligand for TLR4, to trigger TLRs in gut.

15p toshiba23 18-11-2011 57 6   Download