We study here the motion of a spherical gas bubble in a solid body rotating flow of clean silicon oil, to avoid contamination of interface. From the measurement of its equilibrium position, lift and drag forces are determined. Five different silicon oils have been used, providing five different viscosities and Morton numbers. For spherical bubbles the drag coefficient is at first order the same...

Fast agglomeration by emulsion binders to capture fine, hydrophobic particles has been developed in the past few years as an alternative froth flotation small air bubbles. This new method consists of mixing a particle suspension and saltwater-filled droplets covered with semi-permeable oil layers. These expand due osmotic flux water caused presence salt inside droplets. To better understand phy...

Extant models of entry and location choices by competing retailers focus on the benefits of differentiation, derived from locating far apart, and therefore cannot explain high degrees of store agglomeration. Unlike extant models that treat firm profits in reduced form, this paper decomposes firm profit as a function of customer choice (to allow for consumer utility from agglomeration) and compe...

Abstract: Nanoparticles exhibit a high reactivity and strong tendency towards agglomeration. In this study, aluminum oxide (alumina) nanoparticles were characterized by gas adsorption (BET), transmition electron microscopy (TEM) and photon correlation spectroscopy (PCS) techniques to assess the agglomeration of the particles. There is a good correlation between the BET and TEM measurements b...

We investigated the influence of non-cued working memory representations on further information processing. A retro-cue indicated if items on the left or right side of a previous memory array remained relevant. Subsequently, a central probe item was presented with a varying stimulus onset asynchrony (SOA: 300, 400, 600, 1,000, 1,800 ms). Participants had to state whether this stimulus was shown...

Even though information is spatially and temporally irrelevant, it can influence the processing of subsequent information. The present study used a spatial cuing paradigm to investigate the origins of this persisting influence by means of event-related potentials (ERPs) of the EEG. An irrelevant color cue that was either contingent (color search) or non-contingent (shape search) on attentional ...

Die „Komponente“ Mensch stellt einen wesentlichen und erfolgskritischen Faktor bei der Realisierung von Service-orientierten Architekturen (SOA) dar. SOA erfordert neue Rollen und bringt neue Aufgaben mit sich. Auf operativer Ebene agiert das Skills-Management, welches durch geeignete Methoden sicherstellt, dass Personal korrekt ausgewählt bzw. passend weitergebildet wird. Skills-Management ist...

Water alternating gas (WAG) flooding is a widely employed enhanced oil recovery method in various reservoirs worldwide. In this research, we will employ SiO2 nanofluid with the CO2 injection as replacement for conventional WAG process experiments. The suffers from limitations certain industrial applications, such extended cycle times, susceptibility to water condensation and agglomeration, inef...