A two fluid model (TFM) was used to study gas-solid heat transfer in a riser with different inclination angles. A two dimensional pipe with 5.8 cm internal diameter and 5 meter length was chosen.  Effect of bed angle and solid particles feed rate were studied on the heat transfer behavior of gas and solid particles. Obtained results from simulation are compared with the experimental data in the...

Contrast masking was studied psychophysically. A two-alternative forced-choice procedure was used to measure contrast thresholds for 2.0 cpd sine-wave gratings in the presence of masking sine-wave gratings. Thresholds were measured for 11 masker contrasts spanning three log units, and seven masker frequencies ranging +/- one octave from the signal frequency. Corresponding measurements were made...

We report the cloning and functional characterization of an endo-beta-1,3-glucanase from the pinewood nematode Bursaphelenchus xylophilus acquired by horizontal gene transfer from bacteria. This is the first gene of this type from any nematode species. We show that a similar cDNA is also present in another closely related species B. mucronatus, but that similar sequences are not present in any ...

Desktops are the most prevalent environment for productive use of computers. However, there is still a gap between physical and virtual desktops. Previous approaches merged both worlds into one interactive horizontal surface. We argue that horizontal and vertical surfaces serve different purposes and offer different advantages. Therefore, we propose the combination of both surfaces by a soft cu...

Advective ocean{atmosphere interaction: an analytical stochastic model with implications for decadal variability Abstract Atmospheric variability on timescales of a month or longer is dominated by a small number of large-scale spatial patterns (\teleconnections"), whose time evolution has a signiicant stochastic component because of weather excitation. One may expect these patterns to play an i...

Reversible temperature tuning of electrical and thermal conductivities of materials is of interest for many applications, including seasonal regulation of building temperature, thermal storage and sensors. Here we introduce a general strategy to achieve large contrasts in electrical and thermal conductivities using first-order phase transitions in percolated composite materials. Internal stress...