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Tedjeddine Missoum, Auteur ; J. P. Bickford, Directeur de thèse ; T. A. Shami, Directeur de thèse | Manchester : [s.n.] | 1984Gas insulated substations (GIS) are exposed to the same types of overvoltages as conventional substations i.e., lightning overvoltages, switching overvoltages and temporary overvoltages. Possible means to limit overvoltages in GIS are active g[...]
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This thesis describes a new techniques to obtain information about the mechanisms of conduction in polymers by measuring the charge transfer in repeated contacts with liquid mercury. Conventinal conductivity measurements employing electrodes [...]
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A computer program developed by previous M.Sc students (1,2) has been applied to solve the equations governing the steady, inviscid and adiabatic flow on a hub to shroud (S2) streamsurface of the Eckardt centrifugal compressor. The effects on t[...]
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The thesis outlines work carried out to generate switching overvoltages by designing a transient generator and analysis by computer programs of the transient waves. Two studies have been done. The first one is practical, based on the design of[...]
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The purpose of this dissertation is to design and construct a magnetoresistive microphone using the magnetoresistive effect. The aim of the first two chapters is to present a preliminary knowledge about magnetoresistivity, magnetism and acousti[...]
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The overall performance of a 125 mm diameter centrifugal fan was measured and the efficiencies were detrmined for variable flow rates. The comparatively small size of the fan opened up the possibility that because of low Reynolds number, the in[...]
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This thesis is concerned with the problem of detection and localisation of leaks in gas pipelines, and with the problem of sensor fault identification in large scale systems. Three different leak detection schemes are described in the first par[...]
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This study will examine how and to what extent French industry has benefited from industrial policy particularly in relation to the crisis France has been facing since 1973. From the large nomber of industries in which French Government has p[...]
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The present work is divided into two parts. Firstly, the experimental determination of the activity coefficients at infinite dilution for a number of halogenated hydrocarbon/water systems in the temperature range 285.15 K to 323.15 K hasneen ma[...]
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K. Belarbi, Auteur ; M. G. Singh, Directeur de thèse ; A. Y. Allidina, Directeur de thèse | Manchester : [s.n.] | 1984In this dissertation the sequencing of the packing activity subject to constraints in large detergent plants is considered and a solution is obtained using expert systems techniques. The general topology of such plants is of processing-storing-[...]
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This thesis is concerned with the application of NMR spectroscopy to solving problems in organic chemistry. The structure of several tetrafluoropyridines and pentafluorobenzenes was verified, combining the information from ¹⁹F, ¹³C and ¹H spec[...]
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Glass reinforced plastic laminate made from layers of glass in the form of chopped strand mat and polyester resin and constructed by the hand lay-up procedure is extensively used for pipes and vessels in the chemical process and other industries[...]
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Hamoudi Hadj Sahraoui, Auteur ; R. W. Blundell, Directeur de thèse ; L. Gill, Directeur de thèse | Manchester : [s.n.] | 1984One of the main objectives of econometrics is the use of statistical and mathematical techniques for the measurement of economic relations and prediction of the economic behaviour of the agents. Often the phénomenon observed is a continuous o[...]
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The dissertation reports a numerical study of the surface wake using two turbulence models, namely: the standard K-ε model and Rodi's ASM model. The computed data were used to compare the performance of these models to predict the LDA surface w[...]
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This thesis contains a description of instrumentation developed for the study of the concentration of vapour species present during the growth of zinc sulphoselenide films on gallium arsenide substrate using molecular beam epitaxy. It is the ob[...]
