Air was "breathed" in the laboratory through a heated-water humidifier and a breathing tube. Several different humidifiers and tubes were used. The temperature rise of the air on passing through the humidifier and the temperature drop on passing through the tube were measured. Both were dependent on ventilation. Insulating the tube and humidifier together with the insertion of baffles in the la...

The paper presents a validated CFD model for the flow in a bench-scale spinner flask that features a centrally-located magnet-driven impeller. Model development found that use of the immersed solid mesh method resulted in better correspondence with observations and μPIV measurements than the more established sliding mesh method in ANSYS-CFX. Analysis of spatial distributions suggested stresses ...

CFD modeling was used to design a simple modification to one of four compartments of a Dorr 444 clarifier at Maidstone. The model was validated via tracer testing but the best validation would be implementation of the modification. The modification consisting of a system of two baffles was installed during the season and results in terms of clear juice absorbances were obtained. There was a cle...

ii Acknowledgments iv List of Tables vii List of Figures viii 1.0 Literature Review 1 Background 1 Raceway System Farms 1 Aquacultural Effluent Treatment 2 Settling Ponds 2 Sediment Traps 3 Tube and Plate Settlers 3 Microscreens 4 Filter Beds 5 Flotation 6 Raceway Baffles 7 Ozone 8 Wetlands 9 Swirl Separators 9 Aquacultural Sludge Treatment and Disposal 10 Landfills 10 Land Application 10 Compo...

Language acquisition especially in human infants is a problem that intrigues the layman and baffles the expert. This article takes a computational viewpoint toward the problem and investigates the problem of learnability of languages. We look at some results that show that learning is impossible even under very weak criterion. We next look at a framework in which learning takes place with a hel...

The fluids mixing is a crucial operation in large number of engineering systems. It has major significance chemical engineering, food, cosmetics and pharmaceutics production, biotechnology, wastewater treatment countless other applications. Among many available systems online with static mixers stirred tanks plays primary role been developed to meet several processing objectives. effectiveness ...

Several previously unknown models of the Enigma machine have recently been discovered through archive research and inspection of machines in museum collections. The present knowledge about these machines, including both use and technical details, is presented. The paper shows that the Enigma was not one machine, but rather a family of machines built upon the principle of wired rotors with a fix...

Isotropic magnetic materials with high resonant frequencies are useful for applications in microwave devices. Undoped CoFe thin films, as common soft magnetic materials with high saturation magnetization, show isotropic characteristics but no high frequency response. Here, we use ferrite doped CoFe thin film to realize a resonant frequency higher than 4.5 GHz at all orientations. The exchange c...