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2001

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Articles 15151 - 15180 of 16114

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Molecular Characterisation Of Fluidised Catalytic Cracker Feedstocks Using Ruthenium Tetroxide Oxidation: A Study Of Model Hydrocarbons, Helen Frances Sturt Jan 2001

Molecular Characterisation Of Fluidised Catalytic Cracker Feedstocks Using Ruthenium Tetroxide Oxidation: A Study Of Model Hydrocarbons, Helen Frances Sturt

School of Geography, Earth and Environmental Sciences Theses

The world's proven reserves of crude oil will be depleted in 42 years at the current rate of consumption. Oil refiners are under considerable economic and environmental pressure to improve the efficiency of refining and the quality and definition of products. Statistical and fundamental models are extensively used to more accurately model the important refinery processes such as Fluidised Catalytic Cracking (FCC). A major problem with the fundamental approach is that FCC feedstocks are by definition heavy petroleum fractions, and as such constitute highly complex mixtures of aromatic and aliphatic hydrocarbons. Gas chromatography (GC) analysis of heavy petroleum fractions reveals …

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Catchment Scale Monitoring And Modelling Of Phosphorus Using Flow Injection Analysis And An Export Coefficient Model, Grady Scott Hanrahan Jan 2001

Catchment Scale Monitoring And Modelling Of Phosphorus Using Flow Injection Analysis And An Export Coefficient Model, Grady Scott Hanrahan

School of Geography, Earth and Environmental Sciences Theses

Acquiring high quality in situ analytical data with good temporal resolution is required for developing models of phosphorus transport and biogeochemical behaviour. Chapter One describes the behaviour of phosphorus in the aquatic environment, its sources, its role in the eutrophication process and legislation to control its release into aquatic systems. It also summarises analytical techniques for the determination of phosphorus in natural waters. An examination of the hypothesis that the export coefficient modelling approach can be used to predict phosphorus loading in the River Frome catchment, Dorset on an armual and seasonal (monthly) basis is presented in Chapter Two. The …

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Magnetic Dating Of Vesuvian Lavas, Pasquale Tiano Jan 2001

Magnetic Dating Of Vesuvian Lavas, Pasquale Tiano

School of Geography, Earth and Environmental Sciences Theses

A palaeomagnetic study has been carried out on Vesuvian lava flows emplaced since 79 AD. This involved both palaeodirection and palaeointensity investigations of samples from sites on the W, S and SE slopes of the volcano. Thermal demagnetization of 3 component IRMs, susceptibility measurements and coercivity analyses have been carried out on one pilot specimen per site in order to identify the magnetic carriers and to estimate the magnetic grain size. The identificatìon of the primary direction of TRM was carried out following very stringent criteria (Incoronato, 1996). Palaeointensities were evaluated using both a modification of the Modified Thellier & …

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European Union/South Africa Trade, Development And Co-Operation Agreement : Decision-Making, Participation And Perceived Economic Impacts, Roger John Levermore Jan 2001

European Union/South Africa Trade, Development And Co-Operation Agreement : Decision-Making, Participation And Perceived Economic Impacts, Roger John Levermore

School of Geography, Earth and Environmental Sciences Theses

The European Union-South Africa Trade, Development and Co-operation Agreement (EU/SA TDCA), signed in October 1999, is viewed by some in South Africa as not only one of the most important trade and development agreements entered into by the 'new' South African goverrunent, but also a significant agreement for setting precedents for other bi-lateral trade and development pacts between the EU and African, Caribbean and Pacific group of states. This thesis considers two major issues related to the EU/SA TDCA. First, it describes and evaluates the structures that supported the South African side of the TDCA decision-making process. Second, it discusses …

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The Development Of A Holistic Expert System For Integrated Coastal Zone Management, Antoni Bruce Moore Jan 2001

The Development Of A Holistic Expert System For Integrated Coastal Zone Management, Antoni Bruce Moore

School of Geography, Earth and Environmental Sciences Theses

Coastal data and information comprise a massive and complex resource, which is vital to the practice of Integrated Coastal Zone Management (ICZM), an increasingly important application. ICZM is just as complex, but uses the holistic paradigm to deal with the sophistication. The application domain and its resource require a tool of matching characteristics, which is facilitated by the current wide availability of high performance computing. An object-oriented expert system, COAMES, has been constructed to prove this concept. The application of expert systems to ICZM in particular has been flagged as a viable challenge and yet very few have taken it …

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An Evaluation Of The Environmental Fate Of Reactive Dyes, Malcolm John Hetheridge Jan 2001

An Evaluation Of The Environmental Fate Of Reactive Dyes, Malcolm John Hetheridge

School of Geography, Earth and Environmental Sciences Theses

Dyestuffs are widely used industrial chemicals, yet surprisingly little is known about their fate in the environment. The potential modes of transformation and removal of reactive dyes in treatment and in the environment are principally through anaerobic and aerobic biodegradation and photodegradation. The research herein describes the use of LC-MS analysis with laboratory simulations to develop a better understanding of the occurrence and fate of reactive dyes and their degradation products in the aquatic environment. One reason for the lack of information on the environmental fate of reactive dyes has been the paucity of robust analytical methods suitable for the …

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The Biogeochemical Cycling Of Dissolved Organic Carbon In The Iberian Margin Upwelling System (Ne Atlantic Ocean, Geogina Spyres Jan 2001

The Biogeochemical Cycling Of Dissolved Organic Carbon In The Iberian Margin Upwelling System (Ne Atlantic Ocean, Geogina Spyres

School of Geography, Earth and Environmental Sciences Theses

Dissolved organic carbon (DOC) is the quantitatively most important organic carbon reservoir in the world's oceans and its determination at ocean margins, where the exchange of terrestrial and oceanic organic matter occurs, is important for estimating cross-slope fluxes to deep waters. With the increased accuracy and precision (-1%) of analytical methodologies, small changes in the DOC pool can be detected (i.e. 1- 2uM-C). This study investigated the biogeochemical cycling of DOC at the Iberian Margin upwelling system (42-43°N, --9-10°W), where contrasting seasonal hydrologic phenomena occur (e.g. summer upwelling, winter poleward current). Spatial and temporal DOC distributions were determined using high …

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When Inclusion Leads To Exclusion: The Uncharted Terrain Of Community Participation In Economic Development, Audrey Mcfarlane Jan 2001

When Inclusion Leads To Exclusion: The Uncharted Terrain Of Community Participation In Economic Development, Audrey Mcfarlane

All Faculty Scholarship

Since the advent of federally-sponsored urban development, the federal government has sought to facilitate decentralized decision-making by local governments. These federal programs have also strongly encouraged local governments to include community participation in the development decision-making process. Participation evokes notions of democracy, egalitarianism, and inclusion and it is easy to support in principle. But participation is often less easy to support in practice because of its structural disconnect with urban development. This disconnect between principle and practice has been reflected in an ebb and flow of contrastingly strong and weak mandates for participation. This ebb and flow of federally-mandated participation …

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The Idea Of Adoption: An Inquiry Into The History Of Adult Adoptee Access To Birth Records, Elizabeth Samuels Jan 2001

The Idea Of Adoption: An Inquiry Into The History Of Adult Adoptee Access To Birth Records, Elizabeth Samuels

All Faculty Scholarship

There has been in recent years and there continues to be intense debate around the country about whether to open original birth records to adult adoptees. Our understanding of the legal history relevant to the debate has been incomplete and inaccurate. According to this understanding, the state laws that closed court and birth records to the parties to adoptions generally closed these records for all time to all parties; the laws had a primary purpose of insuring lifelong anonymity for birth parents; and the laws became nearly universal by about the middle of the twentieth century. In fact, the history …

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P-Glycoprotein-Associated Anthracycline Resistance In B-Cll: Potential For Cytokine Modulation, Varinia Graciela Munoz-Ritchie Jan 2001

P-Glycoprotein-Associated Anthracycline Resistance In B-Cll: Potential For Cytokine Modulation, Varinia Graciela Munoz-Ritchie

Other Faculty of Health Theses

The phenomenon of multidrug resistance (MDR) in cancer cells is generally associated with P-glycoprotein (P-gp) expression and presents an obstacle to successful chemotherapy. Attempts to overcome P-gp-associated MDR using P-gp modulators, such as verapamil, have been hindered by their intrinsic in vivo toxicity. In 1991, however, Scala et al. demonstrated the alteration of P-gp function by interferon-alpha (IFN-α) in vitro at non-toxic in vivo concentrations, suggesting a basis for the use of IFN-α clinically in patients exhibiting P-gp-associated MDR. Drug resistance in B-CLL has been linked to the phenomenon of MDR, however, publications regarding this have been conflicting. The contrasting …

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Interagency Coordination And Collaboration In The Management Of Child Sexual Abuse: In Australian And England, Anne Margaret Lawrence Jan 2001

Interagency Coordination And Collaboration In The Management Of Child Sexual Abuse: In Australian And England, Anne Margaret Lawrence

Other Faculty of Health Theses

This thesis focuses on interagency coordination and collaboration in the management of child sexual abuse in Australia and in England. The impetus for the research arose from the experience of the author as manager and practitioner in the area of child sexual abuse, while working in these two countries. Problems regarding the management of interagency cooperation had become apparent in child protection practice and were also recognized in the literature. Personal experience, as well as a review of the literature, revealed that there was a need for the identification and validation of the key mechanisms and processes underlying effective interagency …

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Prophylaxis Of Disease Caused By Bacterial Pathogens Of Man, Richard William Titball Jan 2001

Prophylaxis Of Disease Caused By Bacterial Pathogens Of Man, Richard William Titball

Other Faculty of Health Theses

This thesis reports research undertaken which will lead to improved pretreatments and therapies for disease caused by Clostridium perfringens, Francisella tularensis, Yersinia pestis and Burkholderia pseudomallei. C. perfringens is thought to be the most widely distributed bacterial pathogen and is the most important Clostridial species associated with enteric disease in domesticated animals. During warfare C. perfringens has been a significant causes of mortality. Between 1 and 10% of wounded personnel developed gas gangrene during the 1st and 2nd world wars. The ability of the bacterium to cause a range of diseases is due largely to the differential production of toxins. …

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Cytokine Expression In Patients With B-Cell Chronic Lymphocytic Leukaemia, Anna Kaminski Jan 2001

Cytokine Expression In Patients With B-Cell Chronic Lymphocytic Leukaemia, Anna Kaminski

Other Faculty of Health Theses

B-cell chronic lymphocytic leukaemia (B-CLL) results from a clonal accumulation of CD5+ve B-lymphocytes. This expansion of B-lymphocytes is due to increased proliferation and extended survival secondary to decreased apoptosis. Both proliferation and apoptosis are regulated by a group of soluble proteins, termed cytokines, which are secreted by cells and play a key role in the regulation of immunological responses. In view of this, the role of cytokines in the pathogenesis of B-CLL was studied. Interleukin 4 (IL-4) is an anti-apoptotic cytokine which up-regulates bcl-2 in malignant B-lymphocytes. Peripheral blood samples, from untreated B-CLL patients were investigated, together with a group …

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A Study Of The Role Of Cytokines In Acute Pancreatitis In Man, Alison Marie Smithies Jan 2001

A Study Of The Role Of Cytokines In Acute Pancreatitis In Man, Alison Marie Smithies

Other Faculty of Health Theses

Introduction: Acute pancreatitis is an inflammatory disease with a diverse aetiology and variableclinical course. The IL-l gene cluster has been implicated in this disease.Aims: The aims of the study were to investigate polymorphisms of the genes encoded within the IL-lgene cluster in patients with acute pancreatitis and normal controls and to determine therelationship between the polymorphisms and protein levels.Methods: Genotype and allele frequencies were determined in controls (n=217) and patients withacute pancreatitis (n=137) using the polymerase chain reaction (PCR) followed by digestion withrestriction endonucleases where applicable. Protein levels were determined using in vitrostimulation of PBMCs followed by Enzyme Linked Immunosorbent …

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Study Of The Effect Of Turbulence On The Properties Of Flocculated Mud, Andrew Manning Jan 2001

Study Of The Effect Of Turbulence On The Properties Of Flocculated Mud, Andrew Manning

Other Faculty of Science and Engineering Theses

For the successful management of an estuary, an accurate simulation model predicting sediment transport patterns is a necessity. This requires a knowledge of the vertical mass settling flux (MSF), which is the product of the suspended particulate matter (SPM) concentration and the settling velocity (Ws). However the presence of cohesive sediments (i.e. mud) complicates this description due to the ability of mud particles to flocculate into larger aggregates (floes) which demonstrate faster settling velocities and lower effective densities (pe) than the component cohesive particles. The generation of turbulent shear stress (TSS) within the water column is regarded as having a …

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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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Music In Reality The Relation Of Music, Emotion And Pre-Socratic Myth, Brian Capleton Jan 2001

Music In Reality The Relation Of Music, Emotion And Pre-Socratic Myth, Brian Capleton

Other Faculty of Arts, Humanities and Business Theses

This thesis is in two sections. The first critically examines the tradition of harmonia mundi. The earliest complete and developed account of musica mundana appears in Plato, but numerous fragmented references appear in the pre-Socratic sources. The notion that harmonia mundi originated as an idea of quantitative speeds and distances of the celestial bodies, is discredited. Rather, it is shown that it more probably originates as an expression of an 'esoteric spiritual' teaching in which self-knowledge, death, the concept of harmonia, and consequently music, are related. The idea that the greatest importance of music rests on the relationship of music …

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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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Designing A Visual Component Of Communication Within 3d Avatar Virtual Worlds, Nicholas John Earle Jan 2001

Designing A Visual Component Of Communication Within 3d Avatar Virtual Worlds, Nicholas John Earle

Other Faculty of Arts, Humanities and Business Theses

Over the last few years 3D avatar virtual worlds (AVW) have emerged on the Internet. These are computer generated, multi-user, graphical spaces within which people meet, form social groups and interact with each other in real time, typically through the exchange of text or audio messages. Each user is represented within the space by a digital image known as an avatar, which is usually humanoid in form, and is predominantly under the control of the person it represents. This thesisd escribesa creativep roject that is concernedw ith aspectso f social communication between users of "Ws. In particular, an avatar is …

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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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Fatigue Of A Spring Steel With Varying Levels Of Non-Metallic Inclusions, Alan Edwin Lee Holman Jan 2001

Fatigue Of A Spring Steel With Varying Levels Of Non-Metallic Inclusions, Alan Edwin Lee Holman

Other Faculty of Science and Engineering Theses

Plain specimens of two batches of the commercial spring steel BS 251A58 of nominally identical processing but significantly differing levels of non-metallic inclusion levels, have been tested in rotating bending. The data produced has been analysed against some recent methods for the prediction of fatigue properties in high strength materials containing defects. The materials tested were specifically selected for their disparate cleanliness levels, yielding specimens with differing inclusion distribution and maxima. The morphology of critical inclusions is identical between the two material batches. Material microstructure is tempered martensite with ultimate tensile strength of approximately 2000 MPa, which renders it well …

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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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The Resistance To Salt Of Brassica Sps. And Improved Resistance By Direct Selection And Mutagenesis, Manal Hassan Eed Jan 2001

The Resistance To Salt Of Brassica Sps. And Improved Resistance By Direct Selection And Mutagenesis, Manal Hassan Eed

Other Faculty of Science and Engineering Theses

Salinity is one of the most serious environmental stresses influencing agriculture drastically decreasing the production of crop plants throughout the world. Due to salinity thousands of hectares of agricultural land are going out of production annually. To cope with the salinity problem, there is keen interest in the development of crop plants displaying resistance to the effects of salinity. A series of experiments was carried out under controlled environmental conditions to determine salt resistance in Rapid Cycling Brassica species (RCB's) at germination early seedling and late growth stage. The effect of increasing salinity concentration was determined in vivo using a …

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