A procedure for the isolation of bovine Factor V has been developed. The Factor V is isolated from bovine plasma by a series of steps including barium citrate adsorption, polyethylene glycol precipitation, QAE-cellulose adsorption, hydrophobic chromatography on octyl Sepharose, ammonium sulfate fractionation, preparative electrophoresis on acrylamide gels, and finally, phenyl Sepharose chromato...

Silkworm jaundice virus is stable only between pH 5 and about pH 9. The fact that polyhedral bodies retain virus activity after exposure to hydrogen ion concentrations as high as pH 2 is regarded as being due to the protection of virus occluded within the bodies. Further evidence on this point is furnished by experiments on the activity of the polyhedra when treated with antiformin-formalin and...

Strongly inwardly rectifying potassium channels of the Kir 2 subfamily (IRK1, IRK2, and IRK3) are involved in maintenance and modulation of cell excitability in brain and heart. Electrophysiological studies of channels expressed in heterologous systems have suggested that the pore-conducting pathway contains four subunits. However, inferences from electrophysiological studies have not been test...

-There is an ongoing need to isolate and purify ceIls in bivalve mollusc disease research. Many separation techniques differentiate cells solely by a single factor and usually require additives in the medium that may damage live cells. Centrifugai elutriation is a technique that separates particles by size and density simultaneously and can be conducted in physiological media without additives....

in this study, the concentrations of heavy metals (ca, zn, cu, fe, mn, ni) in thesediment of shavoor river in khuzestan province in iran has been investigated. after the library studies and field studies, six samples of water and sediment were taken from the river in order to evaluate heavy metal pollution in sediments. to determine the geochemical phases of metals in sediment samples the 5-ste...

Effects of chemical delinting on the level of occurrence and development of Colletotrichum gossypii associated with cotton seeds The present work was conducted in two phases. The first phase evaluated how the lenght of time of chemical delinting, 1:30 and 4:30 min, effected the level of infection by Colletotrichum gossypii on artificially inoculated cotton (Gossypium hirsutum) seeds. Non-delint...

The dynamics of a flexible filament sedimenting in a viscous fluid are explored analytically and numerically. Compared with the well-studied case of sedimenting rigid rods, the introduction of filament compliance is shown to cause a significant alteration in the long-time sedimentation orientation and filament geometry. A model is developed by balancing viscous, elastic and gravitational forces...

Certain factors are common to the erythrocyte sedimentation rate and the plasma viscosity. Thus fibrinogen increases the erythrocyte sedimentation rate (Gram, 1921 ; Greisheimer, Johnson, and Ryan, 1929) and Hardwicke, Ricketts, and Squire (1950) found that a direct logarithmic relation exists between the erythrocyte sedimentation rate and the plasma fibrinogen concentration. Also fibrinogen ex...