density gradient

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Related to density gradient: density gradient centrifugation

den·si·ty gra·di·ent

a solution in which the concentration (density) of a solute increases in a continuous fashion from top to bottom, or end to end, of a container (for example, the centrifuge tube in density-gradient centrifugation).

Synonym(s): concentration gradient

density gradient

a variation in the density of a solution caused by a change in concentration of a solute in a confined solution.

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References in periodicals archive ?

Figure 9 shows the progress of density gradient beginning from start of ignition at TDC (0[degrees] CA).

Reduced Convective Combustion Chamber Wall Heat Transfer Losses of Hydrogen-Fueled Engines by Vortex-Stratified Combustion - Part 2: Numerical Analyses

The trigonometric form of the energy density gradient [[partial derivative].

Flyby anomaly via least action

Another method that will improve the recovery of motile sperms is density gradient method in which ejaculate is placed on the top of the density media with higher density.

Comparative efficacy of density gradient and swim-up methods of semen preparation in intrauterine insemination cycles

Detection of circulating tumor cells in blood using an optimized density gradient centrifugation.

Circulating tumor cells: a review of Non-EpCAM-based approaches for cell enrichment and isolation

Osawa, "A new device for density gradient fractionation," Analytical Biochemistry, vol.

Capitalizing resolving power of density gradient ultracentrifugation by freezing and precisely slicing centrifuged solution: enabling identification of complex proteins from mitochondria by matrix assisted laser desorption/ionization time-of-flight mass spectrometry

However, the heat distribution and thus the density gradients in tropical lakes are constantly changing, these water-bodies being more susceptible to numerous partial mixing events, usually tending to become stratified in the daytime and mixed at night (Lewis, 1987; Sarmento, 2012).

Short-term thermal stratification and partial overturning events in a warm polymictic reservoir: effects on distribution of phytoplankton community/Estratificacao termica de curto prazo e eventos de desestratificacao parcial em um reservatorio polimitico quente: efeitos sobre a distribuicao da comunidade fitoplanctonica

Cattle spermatozoa membrane function changes on gender selection process using Percoll density gradient centrifugation.

Effect of different centrifugation duration on Simmental bull sperm quality and membrane status after sexing, cooling and freezing processes

Considering the inadequate information regarding the effect of purification protocols on goat type A SSCs and the application of transfected SSCs as an efficient tool in production of transgenic animals, the present study was designed to compare the differential plating and percoll density gradient methods in enrichment of undifferentiated spermatogonia in goats.

Enrichment of undifferentiated type a spermatogonia from goat testis using discontinuous percoll density gradient and differential plating

To determine how HDL-C and LDL-C particles are affected by testosterone administration to eugonadal men, testosterone was administered as a supraphysiological dose (600 mg/wk) for 3 wk to elderly, obese, eugonadal men before elective hip or knee surgery, and lipids were measured by routine methods and by density gradient ultracentrifugation.

Testosterone administration to men increases hepatic lipase activity and decreases HDL and LDL size in 3 wk

the smallest temperature or density gradient observable, depends on the ability to measure a pixel shift between two images.

Background-oriented schlieren visualization of heating and ventilation flows: HVAC-BOS

Comparison of density gradient and simple centrifugation of equine spermatozoa: Effect on fertility of an oligospermic-subfertile stallion.

Aumento de la fertilidad mediante tecnicas de procesamiento avanzado de semen: caso clinico

9, the cavity density gradient obtained for HDPE increases from 96% to 99%, while that of the composite increases from 54% to 78%.

Cavitation in unfilled and nano-[CaCO.sub.3] filled HDPE subjected to tensile test: revelation, localization, and quantification