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Now showing items 1-20 of 14846
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THE SETTLEMENT FACTOR IN THE RURAL PROBLEMS OF NORTH-EAST ENGLAND
(University of Plymouth, 1964)Much attention has been focussed in recent years on the changing distribution of population in North-east England since the Industrial Revolution. In the introduction to his paper on this subject, J. W. House mentions ... -
THE STRUCTURAL RELATIONSHIPS OF SOME GLYCINE POLYMERS
(University of Plymouth, 1964)The Polyglycines are of interest because they are related to nylon and the polyamides, and to the proteins. They resemble nylon in having amine, -NH₂, end groups, and the chains are formed through peptide, C0-NH- linkages. ... -
Isolation and Structure Determination of Certain Acidic Components from California Petroleum
(University of Plymouth, 1965)The acidic constituents of petroleum are called naphthenic acids. The basic process for the isolation of these acids from petroleum involves extraction of the oil with an alkali and acidification of the aqueous extract ... -
DISRUPTION OF THE ALUMINOSILICATE LATTICE BY ACID FLUORIDE SOLUTIONS
(University of Plymouth, 1965)The disruption of the aluminosilicate crystal lattice by aqueous fluoride solutions has been studied. The effect of reaction time, fluoride concentration, pH, and temperature on the reaction have been investigated. The ... -
Applications of Mass Spectrometry to Organic Geochemistry
(University of Plymouth, 1967)How did life originate? Modern evolutionary theories postulate a continuum extending from abiotically formed macromolecules to those capable of reproducing themselves and mutating in a manner which can be considered ... -
AN EXPERIMENTAL STUDY OF ELECTRON SPIN RESONANCE IN SYNTHETIC DIAMOND
(University of Plymouth, 1968)This thesis is divided into five chapters. The first chapter begins with a discussion of the basic principles of electron spin resonance and concludes with a description of the theoretical interpretation of electron spin ... -
THE FORMATION AND REACTIVITY OF SOME NITRIDES
(University of Plymouth, 1969)Nitrides are reviewed generally with respect to their bonding, production (including thermodynamics and kinetics of formation) and reactivity. This is followed by a summary of the studies by previous workers on the formation ... -
THE FORMATION AND REACTIVITY OF ALUMINUM NITRIDE AND RELATED MATERIALS
(University of Plymouth, 1970)The preparation and properties of aluminium nitride are reviewed with special reference to the newer production methods and fabrication techniques. Information so far available on the sintering of materials is summarised. ... -
The Formation and Reactivity of BORON CARBIDE and related materials
(University of Plymouth, 1970)The formation of boron carbide, (CBC)+B110C;(B4C) is re-viewed with special reference to newer production methods and fabrication techniques. Its crystal structure and the nature of its bonding are discussed in relation ... -
THK FORMATION AND REACTIVITY OF SOME TRANSITION METAL NITOIDES
(University of Plymouth, 1970)The formation of transition metal nitrides is reviewed critically with special reference to newer production methods and fabrication techniques. Crystal structures and types of bonding are discussed in relation to those ... -
The Chemical and Physical Properties of Tourmaline
(University of Plymouth, 1971)The decomposition temperature of schorl was found to be 880 ± 10°C using X-ray and optical methods. The main crystalline product in decomposed schorl and dravite was found to be a boron containing mullrte, the composition ... -
ELECTRON SPIN RESONANCE STUDIES OF ALUMINOSILICATE MINERALS AND ASSOCIATED ORGANIC SUBSTANCES
(University of Plymouth, 1972)This thesis is divided into seven chapters. The first chapter describes the basic principles of electron spin resonance (ESR) spectroscopy. In the second chapter, relevant previous studies of clay minerals are reviewed, ... -
OXIDATION OF ZINC SULPHIDE
(University of Plymouth, 1973)A physicochemical study has been made of roasting and sintering processes for zinc sulphide ores. The sulphides are oxidised to metal oxides or sulphates according to conditions, e.g. temperature and time of heating, ... -
FORMATION AND REACTIVITY OF SOME METAL BORIDES AND CARBIDES
(University of Plymouth, 1973) -
THE CRYSTAL STRUCTURES OF SOME TRANSITION METAL COMPLEXES
(University of Plymouth, 1973)A brief theoretical background to crystal structure analysis is given in Chapter 1. The remaining chapters describe the determination of five crystal structures, one using photographic data, and four using diffractometer data. -
THE FORMATION AND REACTIVITY OF SOME NONMETAL SILICIDES
(University of Plymouth, 1973)Boron silicides, B₄Si and B₆Si, have been produced by calcining mixtures of finely-divided boron and silicon at different temperatures and information obtained regarding the process mechanism. There are optimum reaction ... -
ORGANIZATIONAL ANALYSIS AND CHANGE IN MERCHANT SHIPPING
(University of Plymouth, 1973)This research was conducted during a period of rapid change within marine technology and within society ashore. The ships used for the field work were relatively highly mechanized and specialized. Two were owned by a ... -
ELECTRON SPIN RESONANCE AND MORPHOLOGY OF DOPED SYNTHETIC KAOLINITES
(University of Plymouth, 1974)This thesis is divided into nine chapters. The first three chapters describe previous E.S.R. and Mossbauer studies of kaolinite together with the properties of the ferric ion and defect centres. The structure, properties, ... -
ASPECTS OF STEROL METABOLISM IN CRUSTACEA
(University of Plymouth, 1974)The sterol content of various species of Crustacea has been subject to comparatively few investigations. Previous work has been mainly confined to members of the Decapoda. To date, few studies have been made to determine ... -
DIGITAL ENCODING OF TELEVISION SIGNALS USING THE PULSE WIDTH MODULATOR
(University of Plymouth, 1975)An attempt is made to quantify the circuit complexity and mean circuit speed of linearly quantized straight PCM video encoding techniques. Any significant reduction in circuit complexity (i.e. the number of active and ...
