what does gradient mean
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gradient Medical Definition of gradient. 1  1: change in the value of a quantity (as temperature, pressure, or concentration) with change in a given variable and especially per unit on a linear scale. 2  2: a graded difference in physiological activity along an axis (as of the body or an embryonic field)
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Biology, Eighth Edition (Raven) What is the use of a concentration gradient across a membrane? When a molecule or an ion is moved across a membrane from an area of low concentration to an area of high concentration then a gradient is generated. This gradient can be chemical or it can also create a difference in electrical charge across the membrane if ions are involved. The concentration is a source of potential energy. The gradient is analogous to picking up objects that are on the floor and placing them on a table.
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The Gradient The Gradient. The gradient is a vector operation which operates on a scalar function to produce a vector whose magnitude is the maximum rate of change of the function at the point of the gradient and which is pointed in the direction of that maximum rate of change.In rectangular coordinates the gradient of function f(x,y,z) is:If S is a surface of constant value for the function f(x,y,z) then the gradient on the surface defines a vector which is normal to the surface. ApplicationsConduction heat transfer.f S is a surface of constant value for the function f(x,y,z) then the gradient on the surface defines a vector which is normal to the surface. ApplicationsConduction heat transfer.
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Shared Flashcard Set Updated February 20, 2017. Definition: A gradient, or graduated fill, is a color fill that gradually blends from one color to another. A gradient can contain more than two colors, all fading smoothly from one to another. Gradients are very useful for creating shading for three-dimensional and metallic effects.
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Stream gradient Stream gradient is the grade measured by the ratio of drop in elevation of a stream per unit horizontal distance, usually expressed as feet per mile or metres per kilometre.
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Chemiosmosis See also: diffusion, solute, solution ... An Ion gradient has potential energy and can be used to power chemical reactions when the ions pass through a channel (red). Concentration gradient is the difference of concentration of a substance between two regions.
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Gradient descent Gradient descent. Gradient descent is a first-order iterative optimization algorithm for finding the minimum of a function. To find a local minimum of a function using gradient descent, one takes steps proportional to the negative of the gradient (or of the approximate gradient) of the function at the current point. If instead one takes steps proportional to the positive of the gradient, one approaches a local maximum of that function; the procedure is then known as gradient ascent.
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Geothermal gradient Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is about 25–30 °C/km of depth near the surface in most of the world. Strictly speaking, geo-thermal necessarily refers to the Earth but the concept may be applied to other planets. The Earth's internal heat comes from a combination of residual heat from planetary accretion, heat produced through radioactive decay, and possibly heat ...
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Gradient descent Gradient descent is a first-order iterative optimization algorithm for finding the minimum of a function. To find a local minimum of a function using gradient descent, one takes steps proportional to the negative of the gradient of the function at the current point. If instead one takes steps proportional to the positive of the gradient, one approaches a local maximum of that function; the procedure is then known as gradient ascent. Gradient descent is also known as steepest descent. However, gr
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- The goal-gradient effect says that you will accelerate your behavior as you progress closer to your goal. The scenarios I describe above were part of a research study by Ran Kivetz, Oleg Urminsky, and Yuhuang Zheng (full reference is below).nd the answer is, yes they do. Here are some important things to keep in mind about the goal-gradient effect: The shorter the distance to the goal the more motivated people will be to reach it. You can get this extra motivation even with the illusion of progress, as in Scenario B above.
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- The gradient stores all the partial derivative information of a multivariable function. But it's more than a mere storage device, it has several wonderful interpretations and many, many uses.
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What does a 4.5 incline on the treadmill mean? Best Answer: It is the ratio of vertical to horizontal distance covered while runnning converted to a percent. 4.5% incline (or grade) means 4.5 feet of elevation gain for every 100 feet of forward motion. For best simulating flat outdoor running, use 1% inclince to compensate for the lack of wind resistence.
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Electrochemical gradient An electrochemical gradient has two components. First, the electrical component is caused by a charge difference across the lipid membrane. Second, a chemical component is caused by a differential concentration of ions across the membrane.n biological processes, the direction an ion moves by diffusion or active transport across a membrane is determined by the electrochemical gradient. In mitochondria and chloroplasts, proton gradients are used to generate a chemiosmotic potential that is also known as a proton motive force.
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Color gradient An axial color gradient (sometimes also called a linear color gradient) is specified by two points, and a color at each point. The colors along the line through those points are calculated using linear interpolation, then extended perpendicular to that line.n computer graphics, a color gradient (sometimes called a color ramp or color progression) specifies a range of position-dependent colors, usually used to fill a region. For example, many window managers allow the screen background to be specified as a gradient.
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- The stalls were laid on a slope instead of being level, and as my head was kept tied to the manger, I was obliged always to stand on the slope, which was very fatiguing.. slope-the property possessed by a line or surface that departs from the horizontal; a five-degree gradient. gradient. grade-the gradient of a slope or road or other surface; the road had a steep grade. rake, slant, pitch-degree of deviation from a horizontal plane; the roof had a steep pitch.
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Why Are Cells Powered by Proton Gradients? When enough protons have accumulated, the proton motive force powers the formation of ATP. So a gradient allows cells to save up protons as loose change, and that makes all the difference in the world — the difference between growth and no growth, life and no life.
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Stream gradient A high gradient indicates a steep slope and rapid flow of water (i.e. more ability to erode); whereas a low gradient indicates a more nearly level stream bed and sluggishly moving water, that may be able to carry only small amounts of very fine sediment.
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- 3. what is the difference between gradient and divergence. I understood that gradient is points in the direction of steepest ascent and the divergence is measures source strength. I couldn't able to related this concept with divergence concept in image processing.
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Electrochemical Gradient Electrochemical Gradient. Separation of oppositely charged ions by a membrane particularly as generated by actively transporting one or more such ions. Such gradients are generated via the action of sodium-potassium pumps, proton pumps, and, also pumping protons, electron transport chains.eparation of oppositely charged ions by a membrane particularly as generated by actively transporting one or more such ions.
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gradient 1. The degree to which something inclines; a slope. A mountain road with a gradient of ten percent rises one foot for every ten feet of horizontal length. 2. The rate at which a physical quantity, such as temperature or pressure changes over a distance.
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Energy, Plants & Man The energy from each electron being passed down the chain is used to pump a proton (H+) through each carrier molecule, from one side of the membrane to the other. This creates a proton gradient, a type of concentration gradient (difference in concentration of a substance between two sides of a membrane), and gradients are potential energy available for cellular work.
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- A. Gradient. Gradient is the downhill slope of a river. You can think of a gradient in terms of the number of feet a river drops in a mile along its course. Gradients can best be seen along the profile of a river. A profile is a cross section along the path of a river, from its source to the river delta.
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What is the difference between rate of climb and climb gradient? 2 Answers 2. The climb gradient is the percentage of the rise over run (50% if you are climbing at 45 degrees) that your aircraft is climbing at while the rate of climb is the speed at which you are climbing based off the airspeed and climb gradient (given in feet per minute).
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Temperature Gradient A temperature gradient is just the change in temperature over a specified distance between two locations. The difference in temperature causes differences in air pressure between the two spots. This air pressure differential leads to the formation of winds as the atmosphere tries to equalize the air pressure. Generally, the larger the temperature difference, the stronger the resulting winds will be.
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- The pressure gradient force, like any other force, has a magnitude and a direction: direction-the pressure gradient force direction is ALWAYS directed from high to low pressure and is ALWAYS perpendicular to the isobars.he Pressure Gradient Force (PGF). The pressure gradient force, like any other force, has a magnitude and a direction: direction-the pressure gradient force direction is ALWAYS directed from high to low pressure and is ALWAYS perpendicular to the isobars. magnitude-is determined by computing the pressure gradient.
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GORGE • GORGE (noun). The noun GORGE has 3 senses: 1. a deep ravine (usually with a river running through it). 2. a narrow pass (especially one between mountains). 3. the passage between the pharynx and the stomach. Familiarity information: GORGE used as a noun is uncommon.eaning: A deep ravine (usually with a river running through it). Classified under: Nouns denoting natural objects (not man-made). Hypernyms (gorge is a kind of...): ravine (a deep narrow steep-sided valley (especially one formed by running water)). Hyponyms (each of the following is a kind of gorge):