The hydrodynamic behaviour of the spouted bed has been studied by considering the different system parameters (viz. static bed height, spout diameter, particle size, gas velocity and particle density). Experiments were carried out using a Perspex column of 4 inch diameter. Attempts have been taken to develop correlations for the bed expansion / fluctuation ratios by varying different system par...

OSSENKOPP, K.-P., R. K. COOLEY AND C. H. VANDERWOLF. A simple method for monitoring licking responses that is compatible with electrophysiological recording. PHYSIOL. BEHAV. 24(4) 801-803, 1980.--A simple technique is described for the monitoring of drinking behavior that is compatible with concurrent recording of electrophysioiogical events. The technique involves transduction of the movement ...

The white mouse is a suitable animal for the study of the threshold to induced pain because if dropped upon a heated surface it will sharply withdraw its paws when the sensation of heat is succeeded by pain, the time lapse before this withdrawal being quite constant in individual animals. The only difficulty in our experience has been to obtain a constant and uniformly heated surface upon which...

breakthrough bleeding (btb) is the cause of 50% of discontinuations of use by long-acting progestogen-only contraceptive users. btb appears to be associated with capillaries of abnormal morphology and fragility. disturbances in vessels integrity, intercellular junctions or alteration of the basement membrane (bm) composition has been proposed to contribute toward the fragility of these capillar...

The study of a well-preserved crucible fragment from the Middle Kingdom Egyptian fortress in Buhen lower Nubia revealed unexpected presence numerous prills very arsenic- and nickel-rich copper alloy what looks like smelting slag. Based on optical scanning electron microscopy polished section, this paper discusses potential metallurgical process that was carried out type crucible. Strongly reduc...