نتایج جستجو برای: membrane permeability

تعداد نتایج: 427273  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 1982
S R Shorofsky M Field H A Fozzard

The cellular mechanism of active chloride secretion, as it is manifested in the intestine and trachea, appears to possess the following elements: (1)NaCl cl-transport across the basolateral membrane; (2) Cl- accumulation in the cell above electrochemical equilibrium due to the Na+ gradient; (3) a basolateral Na+-K+ pump that maintains the Na+ gradient; (4) a hormone-regulated Cl- permeability i...

Journal: :The Yale Journal of Biology and Medicine 1944
M. Tager

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-...

2015
Akshay Deshmukh Ngai Yin Yip Shihong Lin Menachem Elimelech

In this study, we analyze the effects of membrane properties, namely water permeability, solute permeability, and structural parameter, on the overall performance of an FO membrane module to extract water from simulated seawater (0.6 M NaCl). By considering the thermodynamic limit of operation, we demonstrate that the maximum achievable water recovery is practically independent of membrane prop...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1387

چکیده ندارد.

Journal: :Infection and immunity 1987
M J Loeffelholz M C Modrzakowski

Growth of Acinetobacter calcoaceticus on specific alkanes altered the outer membrane permeability of the organism, as indicated by a change in sensitivity to the antibiotic actinomycin D. As the carbon length of the alkane energy source decreased, outer membrane permeability and susceptibility to actinomycin D increased. Concomitant with the increase in outer membrane permeability, A. calcoacet...

comNode classification within Membrane Residue Curves (M-RCMs) currently hinges on Lyapunov’s Theorem and therefore the computation of mathematically complex eigenvalues. This paper presents an alternative criterion for the classification of nodes within M-RCMs based on the total membrane flux at node compositions. This paper demonstrates that for a system exhibiting simple permeation behaviour...

Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2-pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects o...

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2022

3D printing and nickel coating greatly enhance the membrane permeability selectivity for oil/water separation.

Journal: :The Yale Journal of Biology and Medicine 1944
M. Tager

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-...

Journal: :Advances in colloid and interface science 2011
Satya Deo Anatoly Filippov Ashish Tiwari Sergey Vasin Victor Starov

A hydrodynamic permeability of membranes built up by porous cylindrical or spherical particles with impermeable core is investigated. Different versions of a cell method are used to calculate the hydrodynamic permeability of the membranes. Four known boundary conditions, namely, Happel's, Kuwabara's, Kvashnin's and Cunningham/Mehta-Morse's, are considered on the outer surface of the cell. Compa...

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