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

Farlex Partner Medical Dictionary © Farlex 2012

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References in periodicals archive ?

c) Steep centroperipheral density gradient. Such distribution that occurs in primates, is associated with a fovea.

Comparative Analysis of Retinal Ganglion Cell Topography and Behavioral Ecology in Australian Marsupials/Analisis Comparativo de la Topografia de las Celulas Ganglionares de la Retina y Ecologia del Comportamiento en Marsupiales Australianos

Caption: Figure 5: Flow field density gradient in y direction of pure spiked blunt bodies.

Hypersonic Flow Field Reconfiguration and Drag Reduction of Blunt Body with Spikes and Sideward Jets

A density gradient can be initially detected at the interface between the side channel and combustion chamber at -64.5[degrees] CA.

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

1) and to identify the anomalous gain in momentum to result from the spacecraft traversing through the energy density gradient of space imposed by the rotation of the planet.

Flyby anomaly via least action

[13] 3D FinFET simulation with Density Gradient (DG) quantum correction model, http://www.cogenda.eom/article/examples#FinFET-dg.

Comparative Simulation Analysis of Process Parameter Variations in 20 nm Triangular FinFET

The OptiPrep density gradient solution (60wt% iodixanol) was purchased from Sigma Aldrich.

Viscosity and Morphology Modification of Length Sorted Single-Walled Carbon Nanotubes in PIB Matrices

To address this question, we examined the activated state of neutrophils when prepared by dextran sedimentation preceding density gradient centrifugation with those prepared by steps which removed monocytes prior to the dextran sedimentation [13-15] or with another which totally avoided the use of dextran, the 1-step density gradient centrifugation method.

The Application of Dextran Sedimentation as an Initial Step in Neutrophil Purification Promotes Their Stimulation, due to the Presence of Monocytes

Separation of capsulate and non-capsulate Bacteroides fragilis on a discontinuous density gradient. J Med Microbiol.

Streptococcus suis serotype 2 capsule in vivo

Recovery rates in density gradient were 50.89% on day 1 and 5 13% on day 2compared to 36.69% on day 1 and 37.5%on day 2in swim-up technique (p=0.02).

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

Caption: Figure 4: BM layered over density gradient

Development of bioengineered corneal matrix for reconstructive surgery of eye

Weisman, "High precision fractionator for use with density gradient ultracentrifugation," Analytical Chemistry, 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

In Payne's view (1986), the metalimnion may act as a second bottom for the water column, where the sedimentation of particles may be prevented by its marked density gradient. The metalimnion in the Guarapiranga Reservoir water column indeed acted as a second bottom keeping the chlorophyceans Scenedesmus ecornis and Eudorina elegans practically isolated from the filamentous cyanobacterium Pseudanabaena galeata, which was only found in the hypolimnion.

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