The nudibranch mollusc Tritonia diomedea has been a useful model system for studies of how the brain controls behavior. However, no broad study of T. diomedea field behavior exists--an important deficit since laboratory behaviors may differ from what occurs in nature. Here we report analysis of time-lapse video of the slugs in their natural habitat to describe behaviors and their relationships ...

Over the past few decades, high-performance heat-transfer devices have been studied for numerous applications. Boiling flow in such confined spaces induces high-frequency instabilities that directly influence performances. A small-scale water vaporizer with 10 mm-sized channels is experimentally over a wide range of vapor quality (0.05–1). The peculiarity setup transparent window allows high sp...

Extensive slug-test experiments have been performed at the Hydrogeological Experimental Site (HES) of Poitiers in France, made up of moderately fractured limestones. All data are publicly available through the "H+" database, developed within the scope of the ERO program (French Environmental Research Observatory, http://hplus.ore.fr). Slug-test responses with high-frequency (> 0.12 Hz) oscillat...

A microchannel reactor improves the overall mass and heat transfer as compared with a conventional reactor. This is attributed to creation of high area-to-volume ratio enhanced mixing due presence vortices inside slug. In this paper, mass-transfer performance was studied using cross-junction microchannel. Subsequently, computational fluid dynamic (CFD) method used observe oil concentration cont...

In this paper, a hybrid particle swarm optimization based on the natural selection (NPSO) was presented and used to optimize the parameters of Least Square Support Vector Machine (LSSVM). The NPSO algorithm overcomes the shortcomings of premature convergence and poor local search capability of traditional Particle Swarm Optimization (PSO). Then a classification model of oil-gas-water three-phas...

Measurements of developing interfacial waves on oil-water channel flows show that long wave modes form and grow to large amplitude even though they have much smaller linear grow rates than shorter waves. There is evidence for a "triggering" of these long waves by interaction with much shorter waves, although most of the energy for wave growth comes from the mean flow. Thus linear instability of...

Stratified two-phase flow regimes can occur in the main cooling lines of Pressurized Water Reactors, Chemical plants and Oil pipelines. A relevant problem occurring is the development of wavy stratified flows which can lead to slug generation. In the last decade, the stratified flows are increasingly modelled with computational fluid dynamics (CFD) codes. In CFD, closure models are required tha...

Objective: Overexpression of SLUG has been implicated in promoting migration and invasion of many cancer cells, including anaplastic thyroid cancer (ATC) cells. Thus, targeted down-regulation of SLUG expression in ATC cells and determination of its implications would provide new treatment approaches for disease management. Methods: Small interfering RNA (siRNA) targeting SLUG (SLUG siRNA) was u...

In this paper the capability of the two-fluid model to describe the transition from stratified to slug flow is investigated, by employing three different numerical discretization techniques: classical finite volume, discontinuous Galerkin, and a Lagrangian finite volume approach. It is shown that stratified wavy flow can transition from well-posed to ill-posed following the KelvinHelmholtz inst...

Many generalist predators are abundant in transgenic crops but the uptake of Bt-endotoxins could affect their role in biological control. We tested the hypothesis that small, but detectable, quantities of Cry1Ab-Bt-endotoxin would flow along the corn /slug /carabid food chain but concentrations would be small and have no effect on carabid fecundity. In addition to controlled laboratory feeding ...