Results 291 to 300 of about 282,952 (326)

A REVIEW OF PERMEATION TUBES AND PERMEATORS

Separation and Purification Methods, 2000
In this review, the basic principles underlying the design and application of permeation tubes and permeators are discussed. The fundamental theory is cast in terms of Fick's Laws and Henry's law. The various types of polymer materials and permeation tube devices are then discussed, with a view toward the final application of the devices.
openaire   +1 more source

Effects of Adhesives and Permeation Enhancers on the Skin Permeation of Captopril

Drug Development and Industrial Pharmacy, 2001
To formulate a transdermal drug delivery system of captopril, monolithic adhesive matrix type patches containing 20% captopril, different pressure-sensitive adhesives, and various permeation enhancers were prepared using a labcoater. The effects of the adhesives and permeation enhancers on skin permeation of captopril from the prepared patches were ...
E S, Park   +3 more
openaire   +2 more sources

Effect of Iontophoresis and Permeation Enhancers on the Permeation of an Acyclovir Gel

Current Drug Delivery, 2010
The purpose of the present study was to explore the combined effect of chemical enhancers and iontophoresis on the in vitro permeation of acyclovir gel across porcine skin. Acyclovir gel was formulated using carbopol 940 and hydroxypropyl methylcellulose K4M (HPMC K4M). Effect of drug concentration on the delivery of acyclovir was examined.
Subhash S, Vaghani   +6 more
openaire   +2 more sources

Water permeation in coatings

Journal of Coatings Technology and Research, 2020
The objective of this work is to develop and evaluate experimental approaches with different analytical techniques to measure the permeability, diffusivity, and solubility of water in model coatings. These properties are of primary relevance in studies of coatings for corrosion protection.
E. Jalilian, H. Terryn, G. Van Assche
openaire   +1 more source

Permeation and Permeation Barrier

2016
Because of their small sizes in molecular and atomic forms, hydrogen isotopes easily dissolve in a solid material and permeate through it. The permeation through a container material is a critical issue against safe confinement of tritium. On the other hand, it is common to employ a permeation technique for the separation of hydrogen isotopes from ...
openaire   +1 more source

Tissue dynamics with permeation

The European Physical Journal E, 2012
Animal tissues are complex assemblies of cells, extracellular matrix (ECM), and permeating interstitial fluid. Whereas key aspects of the multicellular dynamics can be captured by a one-component continuum description, cell division and apoptosis imply material turnover between different components that can lead to additional mechanical conditions on ...
Ranft, J.   +3 more
openaire   +3 more sources

Estimation of permeation probability in plasma driven permeation

Fusion Engineering and Design, 1998
Abstract Hydrogen permeation experiments were carried out with different thickness of Ni membranes; 20, 50 and 200 μm, pre-conditioned for the same surface conditions. Hydrogen plasma was created by ECR heating and plasma driven permeation (PDP) through the Ni membrane of 523 K was investigated.
M. Takizawa   +4 more
openaire   +1 more source

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