oxygen permeability

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• Oxygen permeability — (OP) is a parameter of a contact lens. OP expresses the ability of the lens to let oxygen reach the eye by diffusion. Another parameter is the transmissibility level (abbreviated DK/t), the Dk per thickness of the lens, and is generally more used …   Wikipedia

• Oxygen transmission rate — (OTR) is the measurement of the amount of oxygen gas that passes through a substance over a given period. It is mostly carried out on non porous materials, where the mode of transport is diffusion, but there are a growing number of applications… …   Wikipedia

• Oxygen plant — Oxygen absorption plants is the modern non cryogenic gas separation system. Plants based on absorption and sometimes membrane technology. Contents 1 Application 2 Adsorption technology 2.1 Adsorption principle …   Wikipedia

• Mitochondrial permeability transition pore — The Mitochondrial Permeability Transition, or MPT, is defined as an increase in the permeability of the mitochondrial membranes to molecules of less than 1500 Daltons in molecular weight. MPT results from the opening of a mitochondrial… …   Wikipedia

• Mitochondrial permeability transition — Mitochondrial permeability transition, or MPT, is an increase in the permeability of the mitochondrial membranes to molecules of less than 1500 Daltons in molecular weight. MPT results from opening of mitochondrial permeability transition pores,… …   Wikipedia

• Enhanced permeability and retention effect — The Enhanced Permeability and Retention (EPR) effect is the property by which certain sizes of molecules, typically liposomes or macromolecular drugs, tend to accumulate in tumor tissue much more than they do in normal tissues1,2,3. The general… …   Wikipedia

• Varying Permeability Model — The Variable Permeability Model or VPM is an algorithm that is used to calculate the decompression stops needed for a particular dive profile. It was developed by D.E. Yount and others for use in professional diving and recreational diving. It… …   Wikipedia

• gravel permeability — passage of water through gravel; important in supplying oxygen to incubating fish eggs …   Dictionary of ichthyology

• Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …   Wikipedia

• Nanocellulose — or microfibrillated cellulose (MFC), is a material composed of nanosized cellulose fibrils with a high aspect ratio (length to width ratio). Typical dimensions are 5–20 nanometers width and length up to 2000 nanometers. It is pseudo plastic.… …   Wikipedia

• Barrer — A Barrer is a non SI unit of gas permeability (specifically, oxygen permeability) used in the contact lens industry. It is a bulk property. It is named after Richard Barrer.Definition1 Barrer = 10 11 (cm3 O2 ) cm cm 2 s 1 mmHg 1. or1 Barrer = 10… …   Wikipedia