Now showing items 1041-1050 of 1074
Communication locality in hypermeshes and tori
High power GTO AC/DC current source converter with minimum switching frequency and maximum power factor
This paper presents a unique PWM switching pattern and a novel power factor control scheme for high power GTO ac/dc converters. This switching pattern has a switching frequency of 360Hz, which is the lowest possible frequency ...
Production of copper-matrix composites by in situ processing
Reaction synthesis routes were studied as a means of production of copper-matrix composites. Routes for providing fine and uniform dispersions of TiC, TiB and WC in a copper-rich matrix were identified. The reasons for ...
Observation of intermetallic Ni3Ti whiskers during combustion synthesis reactions in the Ni-Ti-C system
Initial studies of self-propagating reactions in the Ni-Ti-C system have revealed the formation of NiTi intermetallic whiskers via the VLS mechanism, in addition to the expected product of TiC in a nickel matrix. The ...
A silicon micromachined device for use in blood cell deformability studies
An application of silicon micromachining to the analysis of blood cell theology is described. The system, based upon a micromachined flow cell, provides a specific measurement of each cell in a statistically significant ...
Behaviour of tantalum in the presence of CO and CO/CO mixtures at elevated temperatures
A study of the carburization of tantalum was carded out by reacting it with CO at temperatures in the range from 1073 K to 1573 K. In addition to TaC, TaO also formed as an intermediate product before full conversion to ...
Speaker verification based on the orthogonalisation technique
This paper describes an investigation into text dependent speaker verification using orthogonal feature: parameters of speech. The study is based on the use of a subset of the BT Millar speech database, consisting of ...