This work focuses on time-dependent rheological behaviour of bacterial cellulose (BC) hydrogel. Due to its ideal biocompatibility, BC hydrogel could be employed in biomedical applications. Considering the complexity of loading conditions in human body environment, time-dependent behaviour under relevant conditions should be understood. BC specimens are produced by Gluconacetobacter xylinus ATCC...

The aim of the present study is to investigate the effect of acute sodium nitrite (NaNO2) treatment on the hematological and hemorheological parameters in rats. Mature rats were subjected to NaNO2 exposure by a single intraperitoneal injection of 50 mg/kg body weight. The animals were sacrificed 1h, 5h, 24h, 48h and 5, 10, 20 days following the administration. Hematological and hemorheological ...

The accurate control of the wellbore pressure not only prevents lost circulation/blowout and fracturing formation by managing the density of the drilling fluid, but also improves productivity by mitigating reservoir damage. Calculating the geothermal pressure of a geothermal well by constant parameters would easily bring big errors, as the changes of physical, rheological and thermal properties...

Sea ice contains flaws including frictional contacts. We aim to describe quantitatively the mechanics of those contacts, providing local physics for geophysical models. With a focus on the internal friction of ice, we review standard micro-mechanical models of friction. The solid’s deformation under normal load may be ductile or elastic. The shear failure of the contact may be by ductile flow, ...

For promoting modifying application of sprayed polyurea (SPUA) in asphalt pavement materials, the effects materials on high-temperature and fatigue performance binders were investigated from different aspects. First, optimal preparation parameters sprayed-polyurea-modified (SPMAs) determined by designing an orthogonal test. Then, properties with contents characterized rheological testing method...