INTRODUCTION The combination of hardness, scratch resistance and flexibility is a highly desired feature in many coating applications. A potential route to achieve this aim is via the introduction of a nanoparticle filler into the polymer resin. The great interest for using nanoparticles to reinforce polymers emerged in the late 1980s when a research group from Toyota reported their findings re...

Background: The study of rheological properties of blood has special interest since it is a circulating fluid exposed to shear rates during its life time. This work aims to investigate the influence of whole body gamma irradiation on the rheological properties of rat’s blood. The applied shear rate was from 12 to 375 s-1. Low shear viscosity (up to 100 s-1) depends mainly on the erythroc...

The formation of gas bubbles in a liquid occurs various engineering processes, such as during foam generation or agitation and mixing bubbly flows. A challenge describing the initial bubble is due to singular behavior at pinch-off. Past experiments Newtonian fluids have shown that minimum neck radius follows power-law evolution shortly before break-up. exponent depends on viscosity surrounding ...

The refractive index n is a basic optical property of polymers that is directly related to other optical, electrical, and magnetic properties. The refractive index is also widely used in material science. The specific refractive index increment (dn/dc) is an important parameter in light scattering measurements of dilute polymer solutions, which can be used for the determination of molecular wei...

BACKGROUND Body weight, body mass index, fibrinogen concentration and relative plasma viscosity can contribute to the development of hypertension in diabetics. This study compares body weight, body mass index, fibrinogen concentration and relative plasma viscosity between hypertensive diabetics, normotensive diabetics and healthy controls. METHODS The present study was carried out on normoten...

Processes on different length scales affect the dynamics of chain molecules. In this work, we focus on structures on the scale of a monomer and investigate polyolefins, i.e., hydrocarbon chains with different small-scale architectures. We present an exact enumeration scheme for the simulation of interactions and relative motion of two short chain sections on a lattice and employ it to deduce th...

The objective of this study is to evaluate the effect of formulation variables on different evaluation properties such as cumulative percentage release and swelling index in development of two layered buccal mucoadhesive system consisting of a highly water soluble drug risedronate sodium. The mucoadhesive systems were developed with varied concentrations of the polymers (1-2%) using plasticizer...