Barrier function in reconstructed epidermis and its resemblance to native human skin

One of the prerequisites for the use of human skin equivalents for scientific and screening purposes is that their barrier function is similar to that of native skin. Using human epidermis reconstructed on de-epidermized dermis we demonstrated that the formation of the stratum corneum (SC) barrier in vitro proceeds similarly as in vivo as judged...

Composition of mortar as a function of distance to the brick-mortar interface: A study on the formation of cured mortar structure in masonry using NMR, PFM and XRD

The formation of cured mortar structure in masonry was studied using multiple experimental techniques. Starting with fresh mortar, nuclear magnetic resonance (NMR) was used to measure the water extraction during brick laying. After curing, the composition of cured mortar was investigated with polarizing and fluorescent microscopy (PFM) and X-Ray...

Spectroscopic studies of dynamically compacted monoclinic ZrO2

The properties of dynamically compacted monoclinic zirconia have been studied by X-ray powder diffraction, IR, Raman, EPR and luminescence spectroscopy. Compaction introduces a large number of defects into the sample, which leads to a broadening of the X-ray lines, and IR and Raman bands. Besides, Raman spectra of compacted samples recorded with...

Preparation and characterization of thin zeolite MFI membranes on porous supports

Thin (2-7 μm) polycrystalline randomly-oriented zeolite MFI membranes were prepared on an α-Al2O3 support by one or more subsequent hydrothermal treatments. Different particle sizes (275-700 nm) in the layer were achieved by changing the synthesis temperature (371-459 K). Zeolite membranes, prepared by two subsequent hydrothermal treatments have...

Foam stability related to polymer permeability. 1: Low molecular weight additives

In the production of polyethylene foams by extrusion with alkanes as a blowing agent, significant changes in the dimensions of extruded products are encountered. The dimensional stability of a foam with a structure of closed cells is improved by blending the polymer with small amounts of a low molecular weight additive. It is believed that the...