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Articles 11731 - 11760 of 11782
Full-Text Articles in Entire DC Network
The Behaviour Of Laterally Loaded Masonry Panels With Openings, Vun Leong Chong
The Behaviour Of Laterally Loaded Masonry Panels With Openings, Vun Leong Chong
School of Engineering, Computing and Mathematics Theses
In recent years the use of masonry as a structural material has increased in advance of the necessary theoretical and corroborative experimental investigations. One aspect of structural masonry where particular problems have been encountered is the design of masonry panels subjected to lateral loadings. Research undertaken, principally in the United Kingdom and Australia, has led to the development of empirical methods of analysis applicable to solid rectangular panels. However, the effects of the presence of openings on the behaviour of a masonry panel has received scant attention. The aim of the research is to rectify this situation. The principal objective …
Inter-Relationships Of Myxosporeans, Including Pkx With Certain Freshwater Fish, Stephen Wolfgang Feist
Inter-Relationships Of Myxosporeans, Including Pkx With Certain Freshwater Fish, Stephen Wolfgang Feist
School of Biological and Marine Sciences Theses
The prevalence and impact of proliferative kidney disease (PKD) and myxosporidiosis has been investigated in wild fish stocks in the UK, over 1,500 fish representing 17 species being examined. PKD was recorded in brown trout, grayling and pike, the causative agent, the PKX cell, being identified with the aid of light and electron microscopy. A further 27 myxosporean species were also noted, with Myxobolus cotti (syn. M. jiroveci), in the brain of bullheads Cottus gobio being recorded for the first time. Studies on the structure and development of Myxidium lieberkuehni in pike revealed several previously undescribed features. Comparative morphological studies …
The Burrowing Mud Shrimp Callianassa Subterranea (Decapoda) And Bioturbation In The North Sea, Ashley Alun Rowden
The Burrowing Mud Shrimp Callianassa Subterranea (Decapoda) And Bioturbation In The North Sea, Ashley Alun Rowden
School of Biological and Marine Sciences Theses
A muddy-sand site in the North Sea was studied to identify the role of the benthic macrofauna in the resuspension of sediment. The macrobenthic community contained species capable of significant bioturbation. In particular, the presence and the temporal occurrence of the brittle star Amphiura filiformis was correlated with seasonal geotechnical and geophysical properties of the seabed. In addition, the extensive burrowing habit of the mud shrimp, Callianassa subterranea (Montagu), make this species potentially the most important contributor to the degree of bioturbation experienced at the site. Mud shrimps were an abundant and stable member of the study site's macrobenthic community …
Horizons: A Vocational Approach To The National Curriculum, Ka Howgill, A Harris
Horizons: A Vocational Approach To The National Curriculum, Ka Howgill, A Harris
Plymouth Institute of Education
No abstract provided.
A Sociological Examination Of Juvenile Fruit Machine Gambling In A Seaside Town, Susan Elizabeth Fisher
A Sociological Examination Of Juvenile Fruit Machine Gambling In A Seaside Town, Susan Elizabeth Fisher
Other Faculty of Arts, Humanities and Business Theses
This thesis has two main aims. The first is to develop a standard measure of addiction to gambling in children which could be used to estimate the extent of dependency among children aged 11 to 16 years. The second focusses upon patterns of usage and seeks to understand the various meanings which children attach to fruit machine gambling in an arcade. The first aim has been achieved by adapting a measure used to diagnose addiction to gambling in adults for use with children. The resulting DSM-IV-J criteria were tested using a questionnaire survey on a sample of 467 schoolchildren aged …
Mediterranean Lens After Collision With Seamounts, Gi Shapiro, Sl Meschanov, Mv Yemel’Yanov
Mediterranean Lens After Collision With Seamounts, Gi Shapiro, Sl Meschanov, Mv Yemel’Yanov
School of Biological and Marine Sciences
No abstract provided.
The Enteric Delivery Of Macromolecules And Subsequent Immune Response In The Cichlid Oreochromis Mossambicus, Paul Jenkins
The Enteric Delivery Of Macromolecules And Subsequent Immune Response In The Cichlid Oreochromis Mossambicus, Paul Jenkins
School of Biological and Marine Sciences Theses
Enhanced enteric delivery systems were examined in the cichlid Oreochromis mossambicus to evaluate the requirements for potential oral vaccination strategies in teleost fish. Human gamma globulin (HGG) was delivered enterically (orally or anally) to the intestine of O.mossambicus as a standard test antigen. The co-administration of the saponin Quillaja saponaria (Quil-A) was evaluated as a novel oral adjuvant, delivered with the antigen in a soluble form and also as a delivery vehicle in the form of micelles and immunestimulatory complexes (ISCOMS). HGG absorption across the intestine was monitored utilising sensitive immunocytochemical techniques which showed that the enterically delivered antigen was …
Cryptocaryon Irritans Brown, 1951 (Ciliophora): Transmission And Immune Response In The Mullet Chelon Labrosus (Risso, 1826), Peter John Burgess
Cryptocaryon Irritans Brown, 1951 (Ciliophora): Transmission And Immune Response In The Mullet Chelon Labrosus (Risso, 1826), Peter John Burgess
School of Biological and Marine Sciences Theses
A standardised procedure was established for the laboratory maintenance of C.irritans in thick-lipped mullet. Nine isolates of C.irritans were obtained of which eight were successfully established for up to 48 weeks. Studies on individual life cycle stages with regards to longevity, viability, and susceptibility to a chemotherapeutic agent, revealed the difficulties in eradicating the cysts. Transmission of the parasite both to and from the host correlated with darkness. High infection levels resulted in the death of host fish within five days following exposure to theronts. An acquired protective immune response developed in host mullet within 14 days after exposure to …
Fludarabine Phosphate For The Treatment Of Low Grade Lymphoid Malignancy, Js Whelan, Cl Davis, S Rule, M Ranson, Et Al
Fludarabine Phosphate For The Treatment Of Low Grade Lymphoid Malignancy, Js Whelan, Cl Davis, S Rule, M Ranson, Et Al
Peninsula Medical School
Thirty-four patients with previously treated, advanced, low grade NHL were treated with Fludarabine, a deamination-resistant analogue of adenosine arabinoside, at a dose of 25 mg m-2 intravenously, daily for 5 days (median number of cycles = 3, range 1-10). Complete remission (CR) was achieved in six and partial remission (PR) in a further seven. Overall, responses were seen in 11/23 patients (48%) with follicular lymphoma and in 2/11 (18%) with low grade, diffuse NHL. Fifteen patients with previously treated CLL and one patient with prolymphocytic leukaemia (PLL) were also treated as above (median no. of cycles = 3, range 1-6). …
The Sedimentology, Petrology And Stratigraphy Of The Upper Greensand In S.W. England, Colin L. Williams
The Sedimentology, Petrology And Stratigraphy Of The Upper Greensand In S.W. England, Colin L. Williams
School of Geography, Earth and Environmental Sciences Theses
A new lithostratigraphic scheme is proposed for those deposits formerly known as the Upper Greensand. In the south and south-west of England the proposed Selbome Group is made up of the proposed Wessex Greensand Formation and Gault Clay Formation as well as the existing Haldon Sands Formation. Four members are proposed and type sections are designated. Lithological logs are presented for sections at Branscombe/Beer Head (Type Section for the Foxmould Sands Member and the Chert Beds Member); Kempstone Rocks, Dunscombe, S.E. Devon (Type Section for the Top Sandstones Member); Whitecliff, Seaton, S.E. Devon; and a small quarry at Dunscombe, S.E. …
Automated Cold Vapour Flow-Injection Analysis Of Mercury At High Concentrations., W. T. Corns, L. C. Ebdon, S. J. Hill, P. B. Stockwell
Automated Cold Vapour Flow-Injection Analysis Of Mercury At High Concentrations., W. T. Corns, L. C. Ebdon, S. J. Hill, P. B. Stockwell
School of Geography, Earth and Environmental Sciences
Continuous-flow cold vapour- atomic fluorescence spectrometry is shown to be an extremely sensitive technique for the determination of mercury with detection limits typically below 0.01 mug l(-1). Linear calibration ranges were found to be at least four orders of magnitude (i.e. up to 0.1 mg l(-1)). Samples with concentrations exceeding the linear range are susceptible to self-absorption, and may, in severe cases, cause carry-over problems between samples. The flow-injection approach has been utilized to extend the upper limit of the linear calibration range allowing determinations up to 10 mg l(-1) of mercury. A range of certified reference materials and zinc …
On-Line Analyte Preconcentration With Atomic Spectrometric Detection., L. Ebdon, A. S. Fisher, S. J. Hill, P. J. Worsfold
On-Line Analyte Preconcentration With Atomic Spectrometric Detection., L. Ebdon, A. S. Fisher, S. J. Hill, P. J. Worsfold
School of Geography, Earth and Environmental Sciences
Pre-concentration of analytes, or matrix removal to overcome interferences using mini- or micro-columns of exchange media prior to atomic spectrometric detection is becoming increasingly more common. This paper is a review of some of the more recent applications of chelating, ion exchange and other resins and gels that have been used to accomplish this.
Automated Cold Vapour Flow-Injection Analysis Of Mercury At High Concentrations, Wt Corns, Lc Ebdon, Sj Hill, Pb Stockwell
Automated Cold Vapour Flow-Injection Analysis Of Mercury At High Concentrations, Wt Corns, Lc Ebdon, Sj Hill, Pb Stockwell
School of Geography, Earth and Environmental Sciences
Continuous-flow cold vapour- atomic fluorescence spectrometry is shown to be an extremely sensitive technique for the determination of mercury with detection limits typically below 0.01 μg l-1. Linear calibration ranges were found to be at least four orders of magnitude (i.e. up to 0.1 mg l-1). Samples with concentrations exceeding the linear range are susceptible to self-absorption, and may, in severe cases, cause carry-over problems between samples. The flow-injection approach has been utilized to extend the upper limit of the linear calibration range allowing determinations up to 10 mg l-1 of mercury. A range of certified reference materials and zinc …
The Misericords Of Beverley Minister : A Corpus Of Folkloric Imagery And Its Cultural Milieu, With Special Reference To The Influence Of Northern European Iconography On Late Medieval And Early Modern English Woodwork, Malcolm Haydn Jones
Other Faculty of Arts, Humanities and Business Theses
The set of 68 misericords in Beverley Minster, Yorkshire, carved in 1520, are considered here both as a corpus of 'folkloric' imagery in their own right, and in a eider cultural context. A detailed iconographic examination of the individual misericords under such headings as 'The Fool and Follies', 'Satires', 'The bestiary' 'Exempla', etc., leads to the isolation of a small number of motifs which are seen not to belong to the native tradition. These non-English motifs are traced to two main sources, the border woodcuts in early Parisian printed Horae and Flemish & German prints. The identification of these sources …
On-Line Analyte Preconcentration With Atomic Spectrometric Detection, L Ebdon, As Fisher, Sj Hill, Pj Worsfold
On-Line Analyte Preconcentration With Atomic Spectrometric Detection, L Ebdon, As Fisher, Sj Hill, Pj Worsfold
School of Geography, Earth and Environmental Sciences
Pre-concentration of analytes, or matrix removal to overcome interferences using mini- or micro-columns of exchange media prior to atomic spectrometric detection is becoming increasingly more common. This paper is a review of some of the more recent applications of chelating, ion exchange and other resins and gels that have been used to accomplish this.
Multiple Track Performance Of A Digital Magnetic Tape System : Experimental Study And Simulation Using Parallel Processing Techniques, Timothy John Jackson
Multiple Track Performance Of A Digital Magnetic Tape System : Experimental Study And Simulation Using Parallel Processing Techniques, Timothy John Jackson
School of Engineering, Computing and Mathematics Theses
The primary aim of the magnetic recording industry is to increase storage capacities and transfer rates whilst maintaining or reducing costs. In multiple-track tape systems, as recorded track dimensions decrease, higher precision tape transport mechanisms and dedicated coding circuitry are required. This leads to increased manufacturing costs and a loss of flexibility. This thesis reports on the performance of a low precision low-cost multiple-track tape transport system. Software based techniques to study system performance, and to compensate for the mechanical deficiencies of this system were developed using occam and the transputer. The inherent parallelism of the multiple-track format was exploited …
Development Of A Computing And Information Systems Infrastructure For Capm In A Computer Integrated Manufacturing Environment, Neil Weston
School of Engineering, Computing and Mathematics Theses
The continuing failure of many CAPM implementations in the UK, despite the availability of a large and growing supply of software, gave rise to concern within the academic and user community and highlighted a need for a concerted research effort into the causes of failure. The Science and Engineering Research Council responded to this need by sponsoring a major research initiative into CAPM through its ACME (Application of Computers to Manufacturing Engineering) Directorate. The findings reported in this thesis result from the work carried out for ACME by the author as part of the joint Polytechnic South West/Sheffield Business School …
An Information Processing Approach To Cognitive Recovery Following Closed Head Injury, Clive Skilbeck
An Information Processing Approach To Cognitive Recovery Following Closed Head Injury, Clive Skilbeck
School of Psychology Theses
The aim of this thesis was to investigate cognitive recovery following closed head injury within an information processing approach. Reasons why Clinical Neuropsychology has neglected the potential contribution from experimental psychology were outlined. Relevant head injury variables were reviewed. including the cognitive deficits often associated with such damage and their recovery. A pilot study confirmed that head-injured people, even soon after injury can attempt tasks with a high information processing load. The study covered the first six months post-injury using mild/moderate and severe head-injured subjects (total n=12). the findings indicating slower performance in severe subjects and their greater susceptibility to …
Epidemiological Studies Of The Bacterial Fish Pathogen Yersinia Ruckeri, Christopher John Rodgers
Epidemiological Studies Of The Bacterial Fish Pathogen Yersinia Ruckeri, Christopher John Rodgers
School of Biological and Marine Sciences Theses
A new mediumi, designated Ribose Ornithine Deoxycholate agar (ROD), was developed and used in field trials at two fish farms where fish were known to have ERM. The medium indicated that Yersinia ruckeri could occur in faeces four to six weeks before appearing in the kidney. Fxurther epidemiological studies dealing with fish condition, performance, disease signs and water isolation are presented. These factors are discussed in relation to husbandry and management practices. The minimum uihibitory concentration (MIC) values for 124 strains of F. ruckeri were detemuned. The effect of oxolinic acid, oxytetracycline and a potentiated sulphonamide, on growth patterns over …
Erosion And Electrode Energy Distribution In Switches With Silver-Cadmium-Oxide Contacts, Hassan Nouri
Erosion And Electrode Energy Distribution In Switches With Silver-Cadmium-Oxide Contacts, Hassan Nouri
School of Engineering, Computing and Mathematics Theses
The cathode and the anode fall of the DC arcs are measured by fast oscilloscope for Ag-CdO contacts over a range of gap-lengths from 0.05 mm to 1 mm, and currents of 4-10 Amps at atmospheric pressure, with a known electrode closing speed, using the Moving Electrode Method. It was observed that the anode fall can occur in a few places within the arc voltage waveform, and is dependent of the electrodes' surface condition. Both cathode and anode falls increase with gap-length and decrease with current. It was found that when arc length is shorter than electrode separation, discontinuity within …
Aspects Of The Micropalaeontology And Stratigraphy Of Cretaceous Shelf Carbonates From The Oman Mountains, Michael Derek Simmons
Aspects Of The Micropalaeontology And Stratigraphy Of Cretaceous Shelf Carbonates From The Oman Mountains, Michael Derek Simmons
School of Geography, Earth and Environmental Sciences Theses
Five outcrop sections (Wadi Mi'aidin, Wadi Bani Kharus, Jebel Madar, Jebel Madamar and Jebel Salak), exposing Thamama and Wasia Group sediments were sedimentologically logged and sampled. Thin sections of each of the Thamama Group samples were prepared for micropalaeontological and microfacies analysis. The foraminifera, calcareous algae and calpionellids in each sample were recorded in order to provide a means of biostratigraphic subdivision, and together with microfacies analysis and sedimentological observations made in the field, provide a means of elucidating the depositional environments of the Thamama Group in the study area. Correlation between outcrop sections has been attempted using a biozonation …
The Immune Response Of The Grey Mullet, Chelon Labrosus (Risso, 1826), To Cryptocotyle Lingua (Creplin, 1825), (Digenea), Bradbury Patrick Wood
The Immune Response Of The Grey Mullet, Chelon Labrosus (Risso, 1826), To Cryptocotyle Lingua (Creplin, 1825), (Digenea), Bradbury Patrick Wood
School of Biological and Marine Sciences Theses
The ability of thick-lipped grey mullet to mount both humoral and cellular immune responses to Cryptocotyle lingua has been demonstrated here for the first time. Of the 3 procedures for immunisation investigated, namely exposure to live cercariae, intraperitoneal (ip) injection of whole killed cercariae and ip injection of a cercarial sonicate, the former gave the highest primary antibody titres with a peak response at 4 weeks post infection. Peak titres occurred at 5 and 7 weeks after immunisation by ip injection of sonicated cercariae and whole killed cercariae respectively. An enhanced secondary antibody response was observed following challenge by ip …
Lchthyophthiriasis In Fish: Genetic Variation In Resistance To Infection, Graham Maurice Clayton
Lchthyophthiriasis In Fish: Genetic Variation In Resistance To Infection, Graham Maurice Clayton
School of Biological and Marine Sciences Theses
The frequency and severity of fish diseases is; increasingly, being reported as a limiting factor in the future development of aquaculture. The control of fish disease is largely performed in retrospect through curative chemotherapy. However, the development of resistant strains of fish places the emphasis on preventative, rather than the curative, control of disease. The freshwater parasite Icthyophthirius multifiliis causes the disease known as ichthyophthiriasis or white spot. Losses of fish due to this parasite are believed to total over one million dollars per annum worldwide. The objective of this study was to examine the genetics of resistance to I. …
Learning And Instructional Success In People With A Mental Handicap, Stephen Charles Strand
Learning And Instructional Success In People With A Mental Handicap, Stephen Charles Strand
School of Psychology Theses
Learning - the process by which new skills and behaviours are acquired - is a central concept in the understanding of mental handicap. Discrimination learning Is specifically identified as an essential pre-requlslte for the acquisition of a variety of more complex behaviours and skills. Many studies have reported that severely mentally handicapped persons show a relative inability to profit from unstructured learning experiences, and frequently fail to learn discriminations trained through simple differential reinforcement (trial-and-error training). Programmed training procedures are identified as important vehicles to facilitate the discrimination learning of severely mentally handicapped children. An initial study is reported that …
The Structure And Reactivity Of Some Metallurgical Carbons, Kenneth Edwin Adams
The Structure And Reactivity Of Some Metallurgical Carbons, Kenneth Edwin Adams
School of Geography, Earth and Environmental Sciences Theses
The reactivity and micro-structure of three coals and two cokes used in iron and steel manufacture have been studied by a variety of techniques, including gas sorption analysis, thermal analysis and microscopy. Changes in surface areas and porosities of the coals and cokes during combustion have been determined by a gravimetric nitrogen sorption technique at 77K. The cokes and coals have been studied by thermal analysis under isothermal and dynamic conditions in different gas atmospheres. Rates of reaction have been correlated with surface area changes. Attempts have been made to calculate activation energies from Kissinger plots of DTA data. Microstructural …
The Marketing And Distribution System For Fresh Fish In South West England: Modelling The Effects Of Supply Variation, John Edward Slaymaker
The Marketing And Distribution System For Fresh Fish In South West England: Modelling The Effects Of Supply Variation, John Edward Slaymaker
Plymouth Business School Theses
The distribution system in the fishing industry has attracted little attention from academics in comparison to the catching sector. This realisation came in the early 1980's with questions being raised about system efficiency and the identification of problems. A lack of understanding of the distribution system led to various calls for an investigation. This research builds on existing understanding by identifying the distribution system in Devon and Cornwall and develops a modelling framework with forecasting properties within which distribution system problems can be analysed. A review of the marketing and distribution literature reveals that system efficiency and the impacts of …
Aspects Of Efficiency In A Small Engineering Company, Michael Miles
Aspects Of Efficiency In A Small Engineering Company, Michael Miles
School of Engineering, Computing and Mathematics Theses
This thesis sets out to identify and discuss five of the subjects that were found to have a significant bearing on the attempts of a small engineering company to improve efficiency. The subjects detailed are production control, layout, costing, decision making and cost reduction. The bulk of the observations were made during a two year period spent as a Teaching Company Associate with a company (T.J. Filters PLC.) first evaluating and then implementing the opportunities offered by factory relocation. A new manufacturing facility was designed and built with a reduction in floor space of 31%. In the first two years …
Optimisation Of The Inductively-Coupled Plasma For The Analysis Of Solutions And Slurries, Philip Norman
Optimisation Of The Inductively-Coupled Plasma For The Analysis Of Solutions And Slurries, Philip Norman
School of Geography, Earth and Environmental Sciences Theses
The application of inductively-coupled plasma (ICP) spectrometry for the analysis of solutions and slurries is reviewed. The critical parameters which affect analytical performance are identified and methods for the optimisation of the ICP for such applications demonstrated. Particle size of the suspended sample is shown to be the most important factor in the analysis of slurry samples. It is demonstrated that only particles less than 8 um in diameter reach the plasma even when the maximal diameter injector tube (3 mm i.d.) is used. Accordingly various methods for the reduction of particle size have been investigated and milling shown to …
A Simple And Versatile Interface To Feed Analogue Data From The Output Of Analytical Instruments To A Bbc Microcomputer, L Ebdon, Jig Alonso, Sj Hill, A Hopkins
A Simple And Versatile Interface To Feed Analogue Data From The Output Of Analytical Instruments To A Bbc Microcomputer, L Ebdon, Jig Alonso, Sj Hill, A Hopkins
School of Geography, Earth and Environmental Sciences
An interface is described to convert analogue data from the recorder or other output of a typical analytical spectrometer, or other instrument, to an amplified form suitable for feeding to the ADC of a microcomputer (BBC B+). The interface is simple and easy to construct, avoids complicated software, and can be used for a variety of applications. Excellent linearity was observed in transformed data and the interface is particularly suited to handling transient signals. Examples of its use in atomic absorption spectrometry, solution spectrophotometry and high performance liquid chromatography are given.
Systems Approach To Documentary Maritime Fraud, Peter Kapoor
Systems Approach To Documentary Maritime Fraud, Peter Kapoor
Other Faculty of Science and Engineering Theses
Wring the last decade documentary maritime fraud has caused considerable financial loss. The internationality of the crime and the difficulties experienced in the investigation and prosecution of offenders has caused serious concern both nationally and internationally. The aim of this research was to examine the system of international trade in terms of flow between institutions, and to develop a model of the system to identify areas of system failures in terms of actual or potential frauds. A database consisting of 101 fraud cases was compiled. Detailed examination of the cases identified features common to different classes of fraud. Systems approach …