Now showing items 1051-1060 of 1068
Preparation of ceramic composite powders from waste colliery minestones
An investigation was carried out to examine the potential for producing ceramic composites from waste colliery minestones. The nature of the raw materials had a marked influence on the kinetics and the product morphology. ...
Preparation and microstructure of AlOTiC composites by self-propagated high temperature synthesis
This investigation was concerned with the production of ceramic composites based on AlOTiC by means of self-propagated high temperature synthesis. When titanium and carbon black mixed with AlO powder reacted, the ignition ...
Design of Pi impedance matching networks
The Q-based method of Π impedance matching network design is studied systematically. A more practical definition of the loaded quality factor Q than that used hitherto is adopted. Designable conditions and design formulas ...
Minimum component multiple integrator loop OTA-grounded capacitor all-pole filters
This paper addresses multiple loop feedback minimum component OTA-grounded capacitor all-pole filters. A general theory and its formulation are presented. It is shown that many new interesting configurations can be produced, ...
Simultaneous carburisation and oxidation of niobium in the presence of carbon monoxide
During reaction with CO, niobium was observed to carburise and oxidise simultaneously, with NbC, NbO and NbO forming as intermediate products before complete conversion to NbC. It was shown that the reason for such a complex ...
The production of precision silicon micromachined non-spherical particles for aerosol studies
A variety of accurately defined non-spherical particles have been produced in silicon dioxide and polycrystalline silicon using the process of silicon micromachining. The particles are of lengths 3μm, 4.5μm, 7.5μm, and ...
The observation of metastable molybdenum carbides