The experimental evidence reveals that sessile drops on a dielectric horizontal substrate subjected to sub-critical in-plane electric field acquire steady-state configurations where balance between the pulling-outwards Maxwell stresses and restoring surface tension has been attained. On other hand, experiments show in supercritical become dominant not only stretch drop as whole but also trigger...

Invasive species and habitat disturbance threaten biodiversity worldwide by modifying ecosystem performance and displacing native organisms. Similar homogenization impacts manifest locally when urbanization forces native species to relocate or reinvade perpetually altered habitat. This study investigated correlations between ant richness and abundance in response to urbanization and the nearby ...

Motivated by the industrial processing of chocolate, we study experimentally fluidisation a sessile drop yield-stress fluid on pre-existing layer same under vertical sinusoidal oscillations. We compare behaviours molten chocolate and Carbopol which are both shear-thinning with similar yield stress but exhibit very different elastic properties. find that these materials spread when forcing accel...

The effect of oxygen on the surface tension of liquid Ag-Sn alloys used as one of the main components in lead-free soldering alloys was measured by the sessile drop method. The surface tension of liquid Ag-Sn alloys decreased with increasing tin content. The effect of oxygen was investigated for oxygen partial pressure ranging from about 10 17 to 10 12 atm. The effect of oxygen on the surface t...

During air–slip direct chill casting of aluminum alloys, uneven or low air pressure areas at the surface of the porous graphite ring mold, can cause the metal to stick to the graphite ring and produce traces along the billets called vertical drags (VD). To prevent this type of defect, it would be an advantage to decrease the wettability of the graphite ring. It has been shown that nanostructure...

Cohesion properties of the binder matrix within asphalt mixes and adhesion characteristics of the asphalt binder and aggregate particles are the two major mechanisms resisting against cracking in asphalt mixes. This study is focused on estimating crack resistance of asphalt mixes at intermediate temperatures through evaluation of cohesion and adhesion properties of binder-aggregate systems usin...

The aim of said study was to obtain nanostructured La2ZnO4 through self combustion synthesis using lanthanum nitrate, znic nitrate as precursors and glycine as a fuel, without the subsequent heat treatments after synthesis. The temperature variation with respect to a sample with constant molar ratio was investigated. The crystallinity ( phases present and crystallite size: estimated by single-l...