1. Using hemocyanin from Limulus polyphemus as a test material, the process of sedimentation in the angle centrifuge, operating both in vacuum and in the open air, has been investigated. 2. Sedimentation in a given field of force was found less efficient when centrifugation was conducted in the open air, because of thermal convection. 3. Correlations have been made with results obtained in the ...

The erythrocyte sedimentation rate (ESR) has proved of the greatest use in the estimation of the activity or quiescence of chronic inflammatory disease. The mechanism of increase in the sedimentation rate is obscure, but experience has shown that the rate and amount of sedimentation is small when the destructive process is slight, and is markedly increased when the condition is active. Cholera ...

in the present study, the soil and water assessment tool (swat 2000) model was tested on both a monthly and yearly basis and applied to the kordan watershed, located in iran. the main objective of the research was to assess the accuracy of the model in sediment-yield and surface water bicarbonate concentration estimation. the attributes of sub-watersheds, tributary channels and the main channel...

. This theoretical prediction is compared to experimental results. In the second part, experiments on fd-virus are described, both in the isotropic and nematic phase. First order in concentration results for this very long and thin (semi-flexible) rod are in agreement with the above theoretical prediction. Sedimentation profiles for the nematic phase show two sedimentation fronts. This result i...