Gradient electrochimique — Gradient électrochimique Pour traverser la membrane d une cellule, un ion est soumis à un gradient électrochimique (ou driving force des anglo saxons), qui s exprime par la différence entre le potentiel de membrane (Vm) de la cellule et le… … Wikipédia en Français
Gradient Électrochimique — Pour traverser la membrane d une cellule, un ion est soumis à un gradient électrochimique (ou driving force des anglo saxons), qui s exprime par la différence entre le potentiel de membrane (Vm) de la cellule et le potentiel d équilibre de l ion… … Wikipédia en Français
Gradient électrochimique — Pour traverser la membrane d une cellule, un ion est soumis à un gradient électrochimique (ou driving force des anglo saxons), qui s exprime par la différence entre le potentiel de membrane (Vm) de la cellule et le potentiel d équilibre de l ion… … Wikipédia en Français
gradient — Rate of change of temperature, pressure, magnetic field, or other variable as a function of distance, time, etc. atrioventricular g. the diastolic … Medical dictionary
Conjugate gradient method — A comparison of the convergence of gradient descent with optimal step size (in green) and conjugate vector (in red) for minimizing a quadratic function associated with a given linear system. Conjugate gradient, assuming exact arithmetic,… … Wikipedia
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
Pressure-gradient force — The pressure gradient force is not actually a force but the acceleration of air due to pressure difference (a force per unit mass). It is usually responsible for accelerating a parcel of air from a high atmospheric pressure region to a low… … 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
Hopfield net — A Hopfield net is a form of recurrent artificial neural network invented by John Hopfield. Hopfield nets serve as content addressable memory systems with binary threshold units. They are guaranteed to converge to a local minimum, but convergence… … Wikipedia
electricpotential gradient — electric potential gradient n. The net difference in electric charge across a cell membrane. * * * … Universalium
fly net — a form of stake net, q.v., with up to a dozen stakes used to support the trap and up to 35 stakes to support the leader. May be set singly or in several set in line, usually on beaches with a fairly gentle gradient, cf. jumper net … Dictionary of ichthyology
