membrane activity

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• Membrane curvature — is the geometrical measure or characterization of the curvature of membranes. The membranes can be naturally occurring or man made (synthetic). An example of naturally occurring membrane is the lipid bilayer of cells, also known as cellular… …   Wikipedia

• Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… …   Wikipedia

• Membrane reactor — A membrane reactor is a piece of chemical equipment that combines a catalyst filled reaction chamber with a membrane to add reactants or remove products of the reaction. Chemical reactors making use of membranes are usually referred to as… …   Wikipedia

• Membrane electrode assembly — A membrane electrode assembly (MEA) is an assembled stack of proton exchange membranes (PEMs) or alkali anion exchange membrane (AAEMs), catalyst and flat plate electrode used in a fuel cell[1]. Contents 1 PEM MEA 2 Research 3 See als …   Wikipedia

• Proton exchange membrane fuel cell — Diagram of a PEM fuel cell Proton exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary fuel cell… …   Wikipedia

• Water activity — or aw is a measurement of the energy status of the water in a system. It is defined as the vapor pressure of water above a sample divided by that of pure water at the same temperature; therefore, pure distilled water has a water activity of… …   Wikipedia

• Cell membrane — Illustration of a Eukaryotic cell membrane The cell membrane or plasma membrane is a biological mem …   Wikipedia

• Plasma membrane Ca²⁺ ATPase — The plasma membrane Ca2+ ATPase (PMCA) is a transport protein in the plasma membrane of cells that serves to remove calcium (Ca2+) from the cell. It is vital for regulating the amount of Ca2+ within cells. [ cite journal | last =Jensen | first… …   Wikipedia

• Subthreshold membrane potential oscillations — Articleissues cleanup = December 2007 expert = Neuroscience technical = December 2007 Neurons display, beyond synaptic and action potentials, rhythmic subthreshold membrane potential oscillations (a particular type of neural oscillations). These… …   Wikipedia

• Peripheral membrane protein — Peripheral membrane proteins are proteins that adhere only temporarily to the biological membrane with which they are associated. These molecules attach to integral membrane proteins, or penetrate the peripheral regions of the lipid bilayer. The… …   Wikipedia

• Outer membrane phospholipase A1 — Phospholipase A1 Identifiers Symbol PLA1 Pfam PF02253 …   Wikipedia