Hydrophobic thickness mismatch between integral membrane proteins and the surrounding lipid bilayer can produce lipid bilayer thickness deformations. Experiment and theory have shown that protein-induced lipid bilayer thickness deformations can yield energetically favorable bilayer-mediated interactions between integral membrane proteins, and large-scale organization of integral membrane protei...

In this article, the pervaporation selectivity as a function of the membrane thickness is studied for the dehydration of acetic acid. From this study, it appeared that the selectivity of polysulfone (PSF) , poly (vinyl chloride) (PVC ) , and polyacrylonitrile (PAN) decreases with decreasing membrane thickness, below a limiting value of about 15 pm. However, in the case of gas separation, the se...

PURPOSE To quantify changes in choriocapillary density and in thickness of Bruch's membrane, the choriocapillaris, and the choroid in 95 unpaired, histologically normal human maculae aged 6 to 100 years and in 25 maculae with advanced age-related macular degeneration. METHODS Light microscopic, computer-aided, morphometric quantitative analysis. RESULTS In ten decades, Bruch's membrane thic...

We do not have an estimate of how much tissue is needed for a reliable measure of bronchial epithelial reticular basement membrane (RBM) thickness or for counts of inflammatory cells. An assessment of the frequency distribution and variance of data from repeat measurements of RBM thickness and biopsy section inflammatory cell counts in cases with asthma (n=6), chronic obstructive pulmonary dise...

The use of ceramics as low cost membrane materials for Microbial Fuel Cells (MFCs) has gained increasing interest, due to improved performance levels in terms of power and catholyte production. The catholyte production in ceramic MFCs can be attributed to a combination of water or hydrogen peroxide formation from the oxygen reduction reaction in the cathode, water diffusion and electroosmotic d...

The corneas of 12 eye donors with maturity-onset diabetes were obtained, and the corneal epithelial basement membranes were studied by transmission electron microscopy. Similar tissue was obtained from 12 nondiabetic eye donors who were matched for age (within 2 years) and race. The mean thickness of the corneal epithelial basement membrane in nondiabetic patients was 0.33 micrometer (+/- 0.11 ...

In this study, the buckling response of homogeneous circular plates with variable thickness subjected to radial compression based on the first-order shear deformation plate theory in conjunction with von-Karman nonlinear strain-displacement relations is investigated. Furthermore, optimal thickness distribution over the plate with respect to buckling is presented. In order to determine the distr...

Although it has been demonstrated that during isotonic grip exercise patients with chronic congestive heart failure have an abnormally reduced forearm oxygen consumption resulting from a depressed forearm flood flow, there may be additional etiologies of this abnormality. To explore this possibility biopsies of the pronator teres muscle were taken in eight control subjects with normal cardiac h...