Dilute oil dispersions of fractal carbon black particles with attractive van der Waals interactions display continuous shear thickening followed by shear thinning at high shear rates. The shear thickening transition occurs at gamma c approximately 10(2)-10(3) s(-1) and is driven by hydrodynamic breakup of clusters. Pre-shearing dispersions at shear rates gamma>gamma c produces enhanced-modulus ...

Hot-melt extrusion is one of the most widely applied processing technologies in the plastic, rubber and food industry. Today this technology has found its place in the array of pharmaceutical manufacturing operations. Melt extrusion process are currently applied in the pharmaceutical field for the manufacture of a variety of dosage forms and formulations such as granules, pellets, tablets, supp...

INTRODUCTION AND OBJECTIVE In otoplasty, an anterior approach with sutures is commonly used, because it is not aggressive with cartilage. The aim of this study on otoplasty was to evaluate the usefulness of the anterior approach, comparing it to the results obtained after the posterior approach. MATERIAL AND METHODS Retrospective study on 25 otoplasties performed at a University Hospital duri...

In industrial extrusion processes, increasing shear rates can lead to higher production rates. However, at high rates, extruded polymers and polymer compounds often exhibit melt instabilities ranging from stick-slip sharkskin gross fracture. These result in challenges meet the specifications on extrudate shape. Starting with an existing published data set extrusion, we assess suitability of clu...