Granular solid hydrodynamics (GSH) is a continuum-mechanical theory for granular media, whose wide range of applicability is shown in this paper. Simple, frequently analytic solutions are related to classic observations at different shear rates, including: i) static stress distribution, clogging; ii) elasto-plastic motion: loading and unloading, approach to the critical state, angle of stabilit...

A cross-diffusion system of parabolic equations for the relative concentration and the dynamic repose angle of a mixture of two different granular materials in a long rotating drum is studied. The main feature of the system is the ability to describe the axial segregation of the two granular components. The existence of global-in-time weak solutions is shown by using entropy-type inequalities a...

This study was undertaken to explore gum from Bombax buonopozense calyxes as a binding agent in formulation of immediate release dosage forms using wet granulation method. The granules were characterized to assess the flow and compression properties and when compressed, non-compendial and compendial tests were undertaken to assess the tablet properties for tablets prepared with bombax gum in co...

Sustained release tablets of Diclofenac Sodium were fabricated using Cashew nut tree gum, HPMC and Carbopol . The tablets were evaluated for preformulation studies like angle of repose, bluk density, compressibility index and physical characteristics like hardness, weight variation, fraibilty and drug content. In-vitro release of drug was performed in PBS pH 7.2 for twelve hours. All the physic...

Abstract In order to improve the flowability of lithium hydroxide powder, powder in a company was selected under conveying condition. The degree circularity used quantitatively characterize micro-morphology and influence particle size on studied by angle repose method, HR method Carr index method. results show that gets better with increasing size. But fine particles (≤ 100μm) is poor, while me...

So, what happens in this encounter of mind and being? What kind of agency does the moment of repose initiate? What does it mean to confront the possible and the real in this instant? Why is the mind only present in this encounter that takes place within the moment of repose? And why, for Bachelard, is the initiation of an action the origin of a temporal duration? Why is temporality only an effe...

Sandpiles have become paradigmatic systems for granular flow studies in statistical physics. New directions of investigations are discussed here. Rather than varying the nature of the pile (sand, salt, rice,..) we have investigated changes in the boundary conditions. We have investigated experimentally and numerically sandpile structures on bases having a fractal perimeter. This type of perimet...

The present study was planed to prepare microspheres for sustained release of Lamivudine using various cellulose polymers such as Ethyl cellulose, Cellulose acetate phthalate, cellulose acetate by employing solvent evaporation technique. Microspheres were characterized for the particle size distribution, wall thickness by scanning electron microscopy (SEM), angle of repose, drug content, bulk d...

Stavudine oral disintegration tablets were formulated to minimize the bitter taste and to reduce the first-pass hepatic metabolism. The various precompression parameters like the angle of repose, bulk density, compressibility index and Hausner's ratio were determined for the powder blend. In this study, 14 formulations of stavudine oral disintegration tablet were prepared by direct compression ...