useful gradient
1Conjugate 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,… …
2Temperature 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… …
3Alveolar-arterial gradient — The Alveolar arterial gradient (A a gradient), is a measure of the difference between the alveolar concentration of oxygen and the arterial concentration of oxygen. It is used in diagnosing the source of hypoxemia. Equation A a gradient = PAO2… …
4Morphological Gradient — In mathematical morphology and digital image processing, morphological gradient is the difference between the dilation and the erosion of a given image. It is an image where each pixel value (typically non negative) indicates the contrast… …
5Morphological gradient — In mathematical morphology and digital image processing, a morphological gradient is the difference between the dilation and the erosion of a given image. It is an image where each pixel value (typically non negative) indicates the contrast… …
6Preconditioned conjugate gradient method — The conjugate gradient method is a numerical algorithm that solves a system of linear equations:A x= b.,where A is symmetric [positive definite] . If the matrix A is ill conditioned, i.e. it has a large condition number kappa(A), it is often… …
7Salt Gradient Solar Ponds — Consist of three main layers. The top layer is near ambient and has low salt content. The bottom layer is hot, typically 160 F to 212 F (71 C to 100 C), and is very salty. The important gradient zone separates these zones. The gradient zone… …
8Salt gradient solar ponds — These consist of three main layers. The top layer is near ambient and has low salt content. The bottom layer is hot, typically 160° F to 212° F (71° C to 100° C), and is very salty. The important gradient zone separates these zones. The… …
9Trans-tubular potassium gradient — The trans tubular potassium gradient (TTKG) is an index reflecting the conservation of potassium in the cortical collecting ducts of the kidneys. It is useful in diagnosing the cause of hyperkalemia. The following is the formula for calculating… …
10temperature gradient — noun change in temperature as a function of distance (especially altitude) (Freq. 3) • Hypernyms: ↑gradient * * * noun : the rate of change of temperature with displacement in a given direction (as with increase of height) compare lapse rate * *… …
