nitrogen membrane

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• Nitrogen generator — Nitrogen generators and stations are stationary or mobile air to nitrogen production complexes. In advanced economies, membrane nitrogen plants have almost ousted alternative processes of nitrogen generation in all cases where nitrogen is not… …   Wikipedia

• Nitrogen narcosis — Inert gas narcosis [Nitrogen narcosis] Classification and external resources Divers breathe a mixture of oxygen, helium and nitrogen for deep dives to avoid the effects of narcosis. A cylinder label shows the maximum operating depth and mixture… …   Wikipedia

• Membrane method — The Membrane method or mixing by gas separation is a method of gas blending to produce nitrox, a breathing gas mostly used for scuba diving. Nitrox systems use semi permeable membranes to separate out a portion of the nitrogen in air. Nitrox… …   Wikipedia

• Membrane technology — The membrane technology covers all process engineering measures for the transport of substances between two fractions with the help of permeable membranes. That means in general mechanical separation process for separation of gaseous or liquid… …   Wikipedia

• Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   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

• peribacteroid membrane — Membrane derived from the plasma membrane of a plant cell and that surrounds the nitrogen fixing bacteroids in legume root nodules. Has a high lipid content and may regulate the passage of material from the plant cell cytoplasm to the symbiotic… …   Dictionary of molecular biology

• Cell disruption by nitrogen decompression — Cell disruption by rapid decompression is one of several methods of cell disruption and is also called explosive decompression or cell bomb. Applications The technique is used to: * Homogenize cells and tissues * Release intact organelles *… …   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

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism …   Universalium