Preposition: of

• tangent: This is because the gradient of a curve at a point is equal to the gradient of the tangent at that point.

• graph: The gradient of the graph decreases as the length increases.

Preposition: across

• membrane: ATP synthetase uses the proton gradient across the membrane to generate energy rich ATP molecules.

Adjective modifier

• steep: There is a steep social class gradient in deaths from suicide.

• conjugate: Preconditioned conjugate gradients are shown to be extremely effective for all symmetric problems.

• electrochemical: The uncoupling protein blocks development of a H + electrochemical gradient, thereby stimulating respiration.

• latitudinal: It is noted that both the initial states have interior reversals in the sign of the latitudinal gradient of PV on isentropic surfaces.

• hydraulic: For one-dimensional flow, constant flow rate implies constant hydraulic gradient.

• altitudinal: The second day provided us with an opportunity to observe the altitudinal vegetation gradient on a south to north transect, ending in Pucon.

Modifies a noun

• centrifugation: The solubilized mixture was then resolved by sucrose density gradient centrifugation.

• minimization: NLLSQ Main sequence: Used in the gradient norm minimization.

• electrophoresis: The adenomas were examined for K-ras mutations by use of a combination of the ' enriched PCR method ' and temporal temperature gradient electrophoresis.

• descent: The contrast function is maximized using an optimization technique such as gradient descent.

• coil: Gradient coils are used to produce magnetic fields that vary with position inside the scanner.

Noun used with modifier

• proton: These enzymes pump protons across the inner membrane, building up a proton gradient.

• sucrose: There are no published EMs of material banding in sucrose density gradients.

• salinity: The water salinity; The lagoon shows a unique salinity gradient from Smallmouth to Abbotsbury.

• pH: The electrical gradient drives cation uptake, while the pH gradient powers cation export.

• concentration: These minerals are absorbed against the concentration gradient, from a dilute solution in the soil water into the concentration solution in the cells.

• temperature: There also exists a temperature gradient from the bore to the rim of the disk.