Energy in density gradient

Preparative Density Gradient Centrifugations

Bull Fertility and Its Relation with Density Gradient Selected Sperm

Background sperm selection is generally used to describe methods for separation of spermatozoa for in-vitro-assisted reproduction. Few studies reported relation in vivo fertility and semen parameters after selection of fertile spermatozoa; hence, our research attempt to assess different semen parameters after post-thaw (PT) or after selecting sperm sample (SSp), using density gradient separatio...

Quantum oscillations in the kinetic energy density: Gradient corrections from the Airy gas

Motility and recovery of alpaca (Vicugna pacos) spermatozoa after centrifugation in a density gradient solution

Background: One of the factors limiting successful processing of alpaca (Vicugna pacos) semen is the viscosity of seminal plasma. The viscous nature of the collected ejaculate has hindered sperm cryopreservation as well as artificial insemination (AI) under field conditions. Aims: The objective of this investigation was to evaluate recovery, motility, ...

[ 6 ] Density Gradient Sedimentation Equilibrium

In 1957, Meselson, Stahl, and Vinograd 1 introduced the remarkable technique of sedimentation equilibriuln in a density gradient for the study of the properties of high molecular weight DNA in solution. Because of the very high molecular weights of DNA, conventional sedimentation equilibrium cannot be used; for even at the lowest centrifugal fields which are practical, the force on these molecu...