Volumetric laser endomicroscopy (VLE) is a recent advanced imaging technology that allows high resolution microstructure imaging of the esophagus and gastric cardia; it has been increasingly used in Europe and the USA [1–3]. The system has been recently upgraded to include a laser marking device that places cautery marks on the mucosa to provide targets for histology. We report a case of an inc...

This study reports on the effects of the combined use of an interactive whiteboard (IWB) and a virtual learning environment (VLE) on mathematics performance and motivation. Lessons taught with an IWB were made available on the VLE, so that they could be consulted regardless of time and place. Students’ mathematics performance was monitored during one school year and their motivation for mathema...

Can widget technologies revolutionize the VLE and challenge the dominant design of elearning? The authors describe an experimental implementation of the Moodle VLE using the W3C Widget specification and Google Wave Gadget API to replace existing core features. This raises four challenges; (1) By replacing most of the functionality of the VLE with simple reusable applications, the core functiona...

Various studies have reported that achieving effective use of increasingly heterogeneous scholarly objects within institutional learning and teaching frameworks is becoming critical to the performance of educational institutions. The integration of digital information environments, such as a University library, within a virtual learning environment (VLE) encapsulates this challenge. This paper ...

Separation and purification are an integral part and a major cost factor in the chemical industry. Distillation is a very commonly used for solvent separation and purification process. It is neither cost effective nor process efficient when dealing with close-boiling and azeotropic solvent mixtures without modifying the relative volatility of the solvent components with an extraneous solvent or...

An in-house designed membrane process suitable for subsea natural gas dehydration was studied. The use of a absorber together with thermopervaporation (TPV) unit solvent regeneration in closed loop enables the effective and clean production high-pressure close to wellhead. This avoids continuous chemical injection preventing hydrate formation pipelines. absorbent agent (triethylene glycol (TEG)...

Experimental VLE data for binary systems of ethanol or water with three 1-ethyl-3-methylimidazolium ionic liquids (ILs) containing different anions were measured at normal pressure using the Siwoloboff procedure. ILs selected in this study those that appear to be suitable ethanol−water mixture separation by extractive distillation. Measured vapor–liquid equilibria described extended Raoult's la...