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Measurement And Modelling Of Uranium And Thorium In Natural Waters, Ernily Rachel Unsworth Jan 2001

Measurement And Modelling Of Uranium And Thorium In Natural Waters, Ernily Rachel Unsworth

School of Geography, Earth and Environmental Sciences Theses

Uranium and thorium are the only elements in the actinide series which naturally occur in the environment in sufficient amounts for practical extraction. They are both radiotoxic and chemotoxic to humans due to the effects of the ionising radiation produced by their radioactive decay, the decay of their daughter products, and due to the chemical toxicity resulting from absorption into the body. Thus it is important to be able to quantitatively determine the levels of uranium and thorium in the environment. Measurement of low levels of uramum and thorium in the presence of high levels of inorganic and organic matrix …

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The Synthesis Of Estuarine Bathymetry From Sparse Sounding Data, Janet Eirlys Burroughes Jan 2001

The Synthesis Of Estuarine Bathymetry From Sparse Sounding Data, Janet Eirlys Burroughes

Other Faculty of Science and Engineering Theses

The two aims of the project involved: 1. Devising a system for prediction o f areas of bathymetric change within the Fal estuary 2. Formulating and evaluating a method for interpolating single beam acoustic bathymetry to avoid artefacts o f interpolation. In order to address these aims, sources of bathymetric data for the Fal estuary were identified as Truro Harbour Office, Cornwall County Council and the Environment Agency. The data collected from these sources included red wavelength Lidar, aerial photography and single beam acoustic bathymetry from a number of different years. These data were input into a Geographic Information System …

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The Relationship Between Livestock Distribution Channels And Animal Welfare, Karen Christina Murray Jan 2001

The Relationship Between Livestock Distribution Channels And Animal Welfare, Karen Christina Murray

Other Faculty of Science and Engineering Theses

Major changes are taking place in all sectors of the livestock and meat producing industries from farm to consumer which impinge on the processes and patterns of livestock distribution from farm to slaughter. These changes are identified and described. A survey of the complete journeys from farm to abattoir of 18,393 slaughterweight lambs sold direct from farm to abattoir, via livestock auction markets and via electronic auctions was conducted. Lambs sold direct from farm to abattoir experienced shorter journeys (in terms of both median duration and distance) than lambs sold through either of the other two channels. Lambs sold through …

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Implementing Marine Pollution Policy : Proposals For Change, Jonathan Peter Richards Jan 2001

Implementing Marine Pollution Policy : Proposals For Change, Jonathan Peter Richards

Other Faculty of Science and Engineering Theses

This study aims to determine the factors that affect the implementation of marine pollution policy, especially with regard to regulation of the hazardous substances which contaminate the marine environment- The purpose is to identify weaknesses in the current regulatory regime and to propose improvements. The study also aims to develop a new strategic framework for the implementation of the recent international policy commitments, which call for the complete cessation of discharges of hazardous substances into the marine environment by the year 2020. Furthermore, the study seeks to provide evidence to support or challenge current theories relating to regulation and policy …

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Developments And Benefits Of Liquid Feeding Through Fermentation For The Post-Weaned Pig, Colm Anthony Moran Jan 2001

Developments And Benefits Of Liquid Feeding Through Fermentation For The Post-Weaned Pig, Colm Anthony Moran

Other Faculty of Science and Engineering Theses

A programme of study was undertaken to assess the safety and palatability of fermented liquid feed. A series of laboratory experiments was conducted to select an inoculant capable of fermenting liquid feed at 20°C. Whilst combinations of cultures dropped the pH the most rapidly, the Lb. plantarum (PC) strain decreased the pH the lowest. A series of trials were conducted using a rifampicin mutant of Lb. plantarum (PC) to examine the fate of the starter culture. In an experiment using liquid milled wheat the addition of the starter culture resulted in an improvement in the inhibition of coliforms over the …

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The Importance Of Being : The Autobiographical Subject In The Drama And Memoirs Of Ronald Duncan, Anna Claire Trussler Jan 2001

The Importance Of Being : The Autobiographical Subject In The Drama And Memoirs Of Ronald Duncan, Anna Claire Trussler

Other Faculty of Arts, Humanities and Business Theses

This study developed after considerable time spent collating and cataloguing data contained in Ronald Duncan's archive. Familiarisation with the material led to my identifying a need to explore the elusive nature of the personality that biographical material should hope to uncover. Duncan was prone to mainly confessional writing, a kind of writing that demands a causal inference between life and work. Furthermore, the archive supplies multiple data sources that serve to aid chronology, trace reliability, provide external corroboration and investigate truth-value. My study follows a loosely chronological structure after discerning shifts in his thematic concerns. The years up until the …

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Poetic Anatomy Of The Numinous Creative Passages Into The Self As Beloved, Partou Zia Jan 2001

Poetic Anatomy Of The Numinous Creative Passages Into The Self As Beloved, Partou Zia

Other Faculty of Arts, Humanities and Business Theses

This research is shaped by the actual experience of practice: as painter and writer. My preoccupation is with the nodal moment when conscious awareness is suspended, and both the corporal and psychic involvement in realising the work almost transport one to another zone of effectiveness. This zone, which I name as the poetic zone, is where the numinous enters the ordinary. The investigation for a space/place/moment that lies beyond the logic of acceptable discourse can help initiate and give shape to a new vocabulary - visual or literary. By orchestrating a methodology, which functions on several layers, I have endeavoured …

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From Rio To Romola: Morality And Didacticism In The English Appreciation Of Early Italian Art 1836-1863, Matthew T.W. Plampin Jan 2001

From Rio To Romola: Morality And Didacticism In The English Appreciation Of Early Italian Art 1836-1863, Matthew T.W. Plampin

Other Faculty of Arts, Humanities and Business Theses

This thesis takes as its starting point the marked rise in interest in the earlier schools of Italian painting in the English art world during the 1840s. Over the course of this decade the study and collection of so-called 'primitive' painting was transformed from a marginal pursuit to an aspect of mainstream taste. The thesis defines the critical discourse formulated in order to rationalise the taste for art works which failed to conform to the principles which had governed the appreciation of old master painting in previous decades. It also studies the ramifications of this discourse with regards to broader …

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An Investigation Into The Factors Determining Ruminant Livestock Distribution In The Far South West, Dafydd Huw Davies Jan 2001

An Investigation Into The Factors Determining Ruminant Livestock Distribution In The Far South West, Dafydd Huw Davies

Other Faculty of Arts, Humanities and Business Theses

Major changes are taking place in all sectors of the livestock and meat producing industries from farm to consumer which impinge on the processes and pattems of livestock distribution from farm to slaughter. These changes are identified and described. A farm business survey of lowland beef and sheep finishers was undertaken, prior to the 2001 Foot and Mouth outbreak, to gain a better understanding of farm business behaviour in order to model the farm business strategies in relation to aggregate livestock channel utilisation. Statistically robust and predictive models using a number of derived latent strategic variables, distilling marketing and business …

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Methodological Embodiments:: Psychical Corporeal Performances Of Subjective Specific Auto[Erotic)-Representations, Ryya Aviva Sanders Jan 2001

Methodological Embodiments:: Psychical Corporeal Performances Of Subjective Specific Auto[Erotic)-Representations, Ryya Aviva Sanders

Other Faculty of Arts, Humanities and Business Theses

A great deal of critical attention has been paid over the last twenty years at least to the relation of 'self and 'Other'. But what happens when the external 'other' is displaced to the periphery of the concerns of textual production? In order to explore this question Methodological Embodiments employs an interdisciplinary praxis that is not limited to the classic model of written theory. At the same time, it does not negate this form that has historical and ideological precedence within an academic context. The aim of this thesis is to juxtapose written theory with artistic practices in order to …

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Studies In Agricultural Technology In Nineteenth- And Twentieth-Century England, Paul William Brassley Jan 2001

Studies In Agricultural Technology In Nineteenth- And Twentieth-Century England, Paul William Brassley

Other Faculty of Science and Engineering Theses

Four published papers and several parts of a book are presented herein, together with a previously unpublished short paper explaining the intellectual background against which they were written and summarising their findings on the development of agricultural teQmology in England in the nineteenth and twentieth centuries. This outlines the contribution of economic and sociological the^pries to the study of technical change, but makes the point that historical studies, although clearly influenced by these theories, tend to use a multifactorial approach which avoids privileging any single explanation. Nevertheless, several themes arising in all of this material are identified, especially the gap …

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The Decision To Undertake Vocational Higher Education In Shipping And Logistics In The Uk, John Dinwoodie Jan 2001

The Decision To Undertake Vocational Higher Education In Shipping And Logistics In The Uk, John Dinwoodie

Other Faculty of Science and Engineering Theses

This work investigates the decision to study shipping and logistics at advanced levels in the UK. Documented evidence reports and analyses the perceptions of students on vocational courses in shipping, transport and logistics and investigates why they chose their particular fields of study. A range of instruments are presented to analyse how students perceived that they had arrived at their study decisions, including national surveys of undergraduates in maritime business, postgraduates in shipping and logistics and professionals contemplating updating short courses. Qualitative, quantitative and mapping methods are presented along with perceptions of relevant professional outcome roles and other factors. Exploratory …

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Phonographies: Practical And Theoretical Explorations Into Composing With Disembodied Sound, John Levack Drever Jan 2001

Phonographies: Practical And Theoretical Explorations Into Composing With Disembodied Sound, John Levack Drever

Other Faculty of Arts, Humanities and Business Theses

This is PhD submission is both practical and theoretical. The practical element consists of nine electroacoustic compositions. The dissertation acts as a discursive accompaniment to the compositions, addressing many of the contextual and philosophical issues that have arisen during the compositional process and the perfannance of the works. It charts out discourse surrounding the different genres of electroacoustic music that the works relate to as well as examining models of work in the respective genres (i. e. sonic art, text.. sound, acousmatic composition, inusique concrite and soundscape composition), and places them into a broader cultural and historical context. Chapter 2 …

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Dose-Banding Of Cytotoxic Drugs: A New Concept In Cancer Chemotherapy, Gj Sewell, Rj Plumridge Jan 2001

Dose-Banding Of Cytotoxic Drugs: A New Concept In Cancer Chemotherapy, Gj Sewell, Rj Plumridge

School of Health Professions

Doses of cytotoxic drugs have traditionally been calculated on the basis of body surface area (BSA), the only exception being carboplatin, for which the dose is calculated on the basis of renal function and targeted area under the plasma concentration–time curve. The use of BSA for dosage calculation arises from Phase I drug development, when animal doses are recalculated for humans on the basis of BSA. This practice has continued into the later drug development phases and, after marketing approval, into clinical practice.1,2 As a result, each dose of cytotoxic drug is individualized for each patient in accordance with current …

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Mass Transport By Non-Linear Internal Waves On The Malin Shelf, Me Inall, Gi Shapiro, Tj Sherwin Jan 2001

Mass Transport By Non-Linear Internal Waves On The Malin Shelf, Me Inall, Gi Shapiro, Tj Sherwin

School of Biological and Marine Sciences

No abstract provided.

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Team Player Styles, Team Design Variables And Team Work Effectiveness In Egypt, Ghada Awed Hassan El-Kot Jan 2001

Team Player Styles, Team Design Variables And Team Work Effectiveness In Egypt, Ghada Awed Hassan El-Kot

Plymouth Business School Theses

The literature has revealed few studies of management in Arab countries in general and particularly in Egypt. Many Egyptian organisations implemented the team concept a number of years ago, however, there do not appear to be any studies investicitaýt inc",D team work effectiveness in Egypt. The literature review and the findings of a pilot study emphasised the need for empirical research in team work in Egypt. Team effectiveness models are examined in order to identify the factors that may enhance team effectiveness in Egypt. Team behavioural models are also examined to identify the importance of balanced team membership and its …

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Introducing Integrated Performance Measurement Into Small And Medium Sized Enterprises, Melanie Hudson Jan 2001

Introducing Integrated Performance Measurement Into Small And Medium Sized Enterprises, Melanie Hudson

Plymouth Business School Theses

The thesis extends current knowledge and understanding of integrated performance measurement (PM) development into the context of small and medium sized enterprises (SMEs). The research builds on existing knowledge of integrated PM development approaches and identifies the context-specific factors which affect its introduction into SMEs. These are used to design, develop and validate a new, continuous improvement based approach for the development of integrated PM systems, which is specifically designed for use in SMEs. First, a conceptual model of criteria for integrated PM development is synthesised from the literature and the characteristics of SMEs are established. An evaluation of current …

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Team Player Styles, Team Design Variables And Team Work Effectiveness In Egypt, Ghada Awed Hassan El-Kot Jan 2001

Team Player Styles, Team Design Variables And Team Work Effectiveness In Egypt, Ghada Awed Hassan El-Kot

Plymouth Business School Theses

The literature has revealed few studies of management in Arab countries in general and particularly in Egypt. Many Egyptian organisations implemented the team concept a number of years ago, however, there do not appear to be any studies investigating team work effectiveness in Egypt. The literature review and the findings of a pilot study emphasised the need for empirical research in team work in Egypt. Team effectiveness models are examined in order to identify the factors that may enhance team effectiveness in Egypt. Team behavioural models are also examined to identify the importance of balanced team membership and its relationship …

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Natural Algorithms In Digital Filter Design, Stephen Penberthy Harris Jan 2001

Natural Algorithms In Digital Filter Design, Stephen Penberthy Harris

School of Engineering, Computing and Mathematics Theses

Digital filters are an important part of Digital Signal Processing (DSP), which plays vital roles within the modern world, but their design is a complex task requiring a great deal of specialised knowledge. An analysis of this design process is presented, which identifies opportunities for the application of optimisation. The Genetic Algorithm (GA) and Simulated Annealing are problem-independent and increasingly popular optimisation techniques. They do not require detailed prior knowledge of the nature of a problem, and are unaffected by a discontinuous search space, unlike traditional methods such as calculus and hill-climbing. Potential applications of these techniques to the filter …

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Process-Property-Fabric Architecture Relationships In Fibre-Reinforced Composites, Neil Robert Lewarne Pearce Jan 2001

Process-Property-Fabric Architecture Relationships In Fibre-Reinforced Composites, Neil Robert Lewarne Pearce

School of Engineering, Computing and Mathematics Theses

The use of fibre-reinforced polymer matrix composite materials is growing at a faster rate than GDP in many countries. An improved understanding of their processing and mechanical behaviour would extend the potential applications of these materials. For unidirectional composites, it is predicted that localised absence of fibres is related to longitudinal compression failure. The use of woven reinforcements permits more effective manufacture than for unidirectional fibres. It has been demonstrated experimentally that compression strengths of woven composites are reduced when fibres are clustered. Summerscales predicted that clustering of fibres would increase the permeability of the reinforcement and hence expedite the …

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Investigation Into Digital Audio Equaliser Systems And The Effects Of Arithmetic And Transform Errors On Performance, Robin John Clark Jan 2001

Investigation Into Digital Audio Equaliser Systems And The Effects Of Arithmetic And Transform Errors On Performance, Robin John Clark

School of Engineering, Computing and Mathematics Theses

Discrete-time audio equalisers introduce a variety of undesirable artefacts into audio mixing systems, namely, distortions caused by finite wordlength constraints, frequency response distortion due to coefficient calculation and signal disturbances that arise from real-time coefficient update. An understanding of these artefacts is important in the design of computationally affordable, good quality equalisers. A detailed investigation into these artefacts using various forms of arithmetic, filter frequency response, input excitation and sampling frequencies is described in this thesis. Novel coefficient calculation techniques, based on the matched z-transform (MZT) were developed to minimise filter response distortion and computation for on-line implementation. It was …

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Anabolic Effect Of Estrogen Replacement On Bone In Postmenopausal Women With Osteoporosis: Histomorphometric Evidence In A Longitudinal Study., G Khastgir, J Studd, N Holland, J Alaghband-Zadeh, S Fox, J Chow Jan 2001

Anabolic Effect Of Estrogen Replacement On Bone In Postmenopausal Women With Osteoporosis: Histomorphometric Evidence In A Longitudinal Study., G Khastgir, J Studd, N Holland, J Alaghband-Zadeh, S Fox, J Chow

School of Biomedical Sciences

No abstract provided.

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Modelling The Hydrodynamics Of The Patos Lagoon, Brazil, Elisa Helena Fernandes Jan 2001

Modelling The Hydrodynamics Of The Patos Lagoon, Brazil, Elisa Helena Fernandes

School of Biological and Marine Sciences Theses

The Patos Lagoon, the largest choked coastal lagoon in the world, is a typical centre of population, commerce, industry and recreation, and consequently it is also a site for disposal of industrial, agricultural and municipal wastes. Important questions concerning beneficial uses of and potential changes to the lagoon and its estuary are left unanswered without a good understanding of hydrodynamic processes. The current study involves the choice, calibration and application of a numerical model which can be used in future hydrodynamic. sediment transport and water quality studies in the area. The two- and three-dimensional modes of the TELEMAC System were …

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The Bioenergetics And Behaviour Of The Rainbow Trout (Oncorhynchus Mykiss) When Feeding On A Copper Contaminated Diet, Hamish Alistair Campbell Jan 2001

The Bioenergetics And Behaviour Of The Rainbow Trout (Oncorhynchus Mykiss) When Feeding On A Copper Contaminated Diet, Hamish Alistair Campbell

School of Biological and Marine Sciences Theses

The long-term effects of sub-lethal dietary Cu-exposure were investigated in relation to consequential energy shifts and resultant locomotory adaptation in 0. mykiss. This study represents the first to attempt to quantify the physiological cost of dietary heavy-metal exposure, the timing and extent of daily behavioural adaptation and resultant significance, in terms of ecologically important behaviours to the fish. Two long-term (2 & 3 months) dietary exposures of 730 mg Cu kgˉ¹ mg d.w. feed showed exposed fish to have a 3-fold increase in liver [Cu] and 10-fold increase in intestinal [Cu] compared to control fish. Consequently exposed fish elicited a …

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Physiological And Biochemical Factors Affecting Carotenoid Utilization In Salmonid Fish, Gregory Ian Page Jan 2001

Physiological And Biochemical Factors Affecting Carotenoid Utilization In Salmonid Fish, Gregory Ian Page

School of Biological and Marine Sciences Theses

Carotenoid utilization in rainbow trout (Oncorhynchus mykiss Walbaum) and Atlantic salmon (Salmo salar L.) has been investigated with respect to tissue distribution of carotenoids and the role of the liver on the bioavailability of the lipid soluble carotenoids, astaxanthin and canthaxanthin. Species-specific and tissue-specific accumulations were noted for astaxanthin and canthaxanthin in the rainbow trout and Atlantic salmon, possibly indicating fundamental differences in their utilization in these species. The liver and the kidney were revealed to be the major tissues involved in carotenoid metabolism in both rainbow trout and Atlantic salmon. Apparent digestibilities (-96% and -30% for rainbow trout and …

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The Uptake And Flux Of Dissolved Nitrogen In Marine Waters, Andrew Paul Rees Jan 2001

The Uptake And Flux Of Dissolved Nitrogen In Marine Waters, Andrew Paul Rees

School of Biological and Marine Sciences Theses

The biological uptake and transformation of inorganic nitrogen species is described for contrasting marine environments which include a sea loch, riverine plume, polar marginal ice-zone, continental shelf break, oligotrophic ocean and a mesoscale eddy. Uptake of nitrate and ammonium by phytoplankton has been determined using the stable isotope as a tracer and continuous flow stable isotope-ratio mass spectrometry. The analysis of dissolved and atmospheric nitrous oxide was made using electron capture detector gas chromatography in a novel configuration which also allowed for the simultaneous analysis of methane from a single sample. Significant advances in the study of the marine nitrogen …

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Cancer Treatment And Safety: Occupational Exposure-Risks And Remedies, Gj Sewell Jan 2001

Cancer Treatment And Safety: Occupational Exposure-Risks And Remedies, Gj Sewell

School of Health Professions

No abstract provided.

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Women's Employment In Bangladesh Agriculture: Composition, Determinants And Scope, S Rahman Oct 2000

Women's Employment In Bangladesh Agriculture: Composition, Determinants And Scope, S Rahman

School of Geography, Earth and Environmental Sciences

Gender composition of labour use and factors determining demand and supply of female labour in crop production is examined using survey data from 14 villages in two agro-ecological regions of Bangladesh. The share of women in labour use ranges between 11-18% in foodgrain (rice and wheat) and 14-48% in non-cereal (highest for vegetables) production. Incidence of female labour hire is very low and varies directly with land size classes while supply from family varies inversely. Cultivation of diverse crops (local and modern varieties of rice, jute, oilseeds and vegetables), education as well as women's ownership of land increases demand for …

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A Holistic Approach To The Evaluation Of Socio-Economic And Environmental Impacts Of Technological Change In Agriculture: An Application In Bangladesh, S Rahman, Jk Routray Jul 2000

A Holistic Approach To The Evaluation Of Socio-Economic And Environmental Impacts Of Technological Change In Agriculture: An Application In Bangladesh, S Rahman, Jk Routray

School of Geography, Earth and Environmental Sciences

No abstract provided.

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Guanylyl Cyclase Activity Associated With Putative Bifunctional Integral Membrane Proteins In Plasmodium Falciparum, Dj Carucci, Aa Witney, Dk Muhia, Dc Warhurst, Et Al Jul 2000

Guanylyl Cyclase Activity Associated With Putative Bifunctional Integral Membrane Proteins In Plasmodium Falciparum, Dj Carucci, Aa Witney, Dk Muhia, Dc Warhurst, Et Al

School of Biomedical Sciences

We report here that guanylyl cyclase activity is associated with two large integral membrane proteins (PfGCalpha and PfGCbeta) in the human malaria parasite Plasmodium falciparum. Unusually, the proteins appear to be bifunctional; their amino-terminal regions have strong similarity with P-type ATPases, and the sequence and structure of the carboxyl-terminal regions conform to that of G protein-dependent adenylyl cyclases, with two sets of six transmembrane sequences, each followed by a catalytic domain (C1 and C2). However, amino acids that are enzymatically important and present in the C2 domain of mammalian adenylyl cyclases are located in the C1 domain of the P. …

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