The understanding of mixing and mass transfers of nutrients and drugs in the small intestine is of prime importance in creating formulations that manipulate absorption and digestibility. We characterised mixing using a dye tracer methodology during spontaneous longitudinal contractions, i.e. pendular activity, in 10 cm segments of living proximal duodenum of the rat maintained ex-vivo. The resi...

Stratified tank models are used to simulate thermal storage in applications such as residential or commercial hot-water tanks, chilled-water and solar systems. The energy efficiency of these relates the system components level stratification maintained during various flow events tank. One-dimensional (1D) building simulations because short computation time but often do not include flow-rate dep...

Thirty-five years ago, B.F. Skinner (1976) lamented a decreasing trend in the prevalence of cumulative records in the Journal of the Experimental Analysis of Behavior ( JEAB). The editorial began with the two memorable lines, ‘‘Evidently we have not long to wait for an issue of JEAB without a single cumulative record! I shall not miss the records so much as the kinds of experiments that could s...

Triboelektrostatická separácia minerálnej substancie zo slovenského uhlia V článku sú diskutované niektoré technické aspekty triboelektrostatickej separácie a výsledky aplikácie tohto postupu pri úprave troch typov uhlia, konkrétne energetického uhlia z Cígľa, Handlovej a Novák. Bolo zistené, že účinnosť separácie veľmi úzko závisí na druhu separovan uhlia. Prvé výsledky preukázali súvislosť me...

The development of new biopharmaceuticals relies on robust scale-up from small-scale screening studies to industrial bioreactors. Novel SUB designs can prove highly beneficial, although they lack the extensive characterisation traditional STRs. Pall Corporation’s Allegro™ STR 50-2000 L bioreactor range has a unique design square cross-section, with three wedge-shaped baffles. A scale-down 1 pro...

Legionella pneumophila is known to proliferate in hot water plumbing systems, but little is known about the specific physicochemical factors that contribute to its regrowth. Here, L. pneumophila trends were examined in controlled, replicated pilot-scale hot water systems with continuous recirculation lines subject to two water heater settings (40 °C and 58 °C) and three distal tap water use fre...

This study aims to develop the mixing and pressing processes of split-gill mushroom spawn blocks through development construction a semi-automatic mixing. The developed machine uses 0.5 hp motor drive tank press cylinder, which are connected 1:60 reduction gear. results show that spawns in this within standard ranges, with an average weight 598 g, height 10.2 cm, density 0.33 g/cm3. As for prod...

Direct two-dimensional numerical simulation and experiments, in which small rocket motors accelerate a tank containing two fluids, have been used to investigate turbulent mixing by Rayleigh-Taylor instability at a wide range of density ratios. The experimental data obtained so far has been used to calibrate an empirical model of the mixing process which is needed to make predictions for complex...