The heat and mass transfer phenomena that occur in beds of ventilated hygroscopic porous media are coupled. This results in two transfer waves traversing bulks of porous medium that initially have a uniform temperature and moisture content, and that are subsequently ventilated with air that is not in thermodynamic equilibrium with the solids. The more rapidly travelling wave is known as a tempe...

Isoflurane is a haloginated ether, is stable when stored and is presented as 99.9% pure product. The absence of a preservative make vaporisation more efficient and it is very unlikely that moving parts of the vaporiser will stick. The physical properties of isoflurane are similar to those of halothane. The minimum alveolar concentration (MAC) of isoflurane in the different target species is det...

A laser vaporisation source and a time-of-flight mass spectrometer are used for the production and detection of TiArn Ž . clusters. Parallel, density functional theory DFT calculations assist in extracting the structures of the first members of the series. The mass spectrum is dominated by one intense line of TiAr , for which the DFT calculations predict a regular 6 octahedron. q 1999 Elsevier ...

The external structure of the spray-flamelet can be described using Schvab–Zel'dovich–Liñan formulation. gaseous mixture-fraction variable as function physical space, Z(xi), typically employed for description diffusion flames leads to non-monotonicity behaviour spray due extra fuel supplied by vaporisation droplets distributed into flow. As a result, overall properties depend not only on Z and ...

Thulium laser vapo-enucleation of the prostate is the latest addition to the arsenal of minimally invasive therapies available for the surgical treatment of lower urinary tract symptoms secondary to benign prostate hyperplasia. The potential advantages include smoother vaporisation, a clearer visual field and the option of both continuous-wave and pulsed modes, which also potentiate the haemost...

INTRODUCTION Photoselective vaporisation of the prostate (PVP) is a surgical alternative to transurethral resection of the prostate (TURP). The goal of this study was to compare the new AMS MOXY fiber which provide 180 watts power to the 4090 fiber 120 watts power source currently used in benign prostatic hyperplasia. The assessment criteria were peroperative and early postoperative data. MET...

The mechanisms by which carbon nanotubes nucleate and grow remain poorly understood. This paper reviews the models which have been proposed to explain nanotube growth in the arc-evaporation and laser-vaporisation processes. Many of the early models assumed that growth is a gas phase phenomenon but there is growing experimental evidence that the formation of both multiwalled and single-walled tu...

Lime production is a highly carbon-intensive process for which new technology carbon dioxide capture needed, if it to meet zero-emission targets. Hydrogen peroxide an oxidant that decomposes exothermically oxygen and water. That is, can potentially be used as alternative air the combustion of hydrocarbon fuels, thereby avoiding dilution product flue gas with nitrogen, otherwise present in combu...