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gradient de charge

См. также в других словарях:

  • Gradient (disambiguation) — Gradient may refer to:* Gradient, in vector calculus, a vector field representing the maximum rate of increase of the scalar field direction of the maximum change. * Slope or grade, referring to the inclination of a road or other geographic… …   Wikipedia

  • Charge conservation — In physics, charge conservation is the principle that electric charge can neither be created nor destroyed. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always… …   Wikipedia

  • Perte de charge — En hydraulique, la perte de charge correspond à l énergie dissipée par le frottement du liquide. Cette énergie doit être compensée afin de permettre au liquide de se déplacer. On l exprime couramment sous la forme d une pression (on l appelle… …   Wikipédia en Français

  • Electrochemical gradient — An electrochemical gradient is a spatial variation of both electrical potential and chemical concentration across a membrane; that is, a combination of the membrane potential (delta psi) and the pH gradient (delta pH). Both components are often… …   Wikipedia

  • Temperature gradient gel electrophoresis — (TGGE) and Denaturing Gradient Gel Electrophoresis (DGGE) are forms of electrophoresis which use either a temperature or chemical gradient to denature the sample as it moves across an acrylamide gel. TGGE and DGGE can be applied to nucleic acids… …   Wikipedia

  • Potential gradient — A potential gradient is the local space rate of change of the potential with respect to displacement.In electrostatics then, it is the local space rate of change of the electric potential:: mathbf{E} = delta V / delta s [http://niuhep.physics.niu …   Wikipedia

  • Porteur de charge — Un porteur de charge est, en sciences physiques, une particule ou une quasi particule qui porte une charge électrique. En se déplaçant, les porteurs de charge créent un courant électrique, comme les ions dans les solutions liquides et les… …   Wikipédia en Français

  • electricpotential gradient — electric potential gradient n. The net difference in electric charge across a cell membrane. * * * …   Universalium

  • Resting potential — The relatively static membrane potential of quiescent cells is called the resting membrane potential (or resting voltage), as opposed to the specific dynamic electrochemical phenomena called action potential and graded membrane potential. Apart… …   Wikipedia

  • Osmotic power — Renewable energy Biofuel Biomass Geothermal Hydroelectricity Solar energy Tidal power Wave power Wind power …   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

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