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Dissertations / Theses on the topic 'Characterisation'

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1

Hecker, Richard. "The characterisation of polyacrylamide flocculants." Thesis, Curtin University, 1998. http://hdl.handle.net/20.500.11937/2010.

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Polyacrylamide is widely used as a flocculant but the influence of the molecular mass distribution upon flocculant activity is poorly understood. This thesis outlines the successful characterisation of ultrahigh molecular mass polyacrylamide solutions in terms of discrete solvated polymer coils and coil agglomerates. These features were correlated with the observed flocculation, demonstrating a number of solution state features required to improve flocculation activity.Aqueous solutions of polyacrylamide exhibit time-dependant behaviour affecting viscosity and polymer agglomeration. Improving
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2

Smith, David P. "Characterisation of peracids." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/272276.

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3

Hecker, Richard. "The characterisation of polyacrylamide flocculants." Curtin University of Technology, School of Applied Chemistry, 1998. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=10745.

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Polyacrylamide is widely used as a flocculant but the influence of the molecular mass distribution upon flocculant activity is poorly understood. This thesis outlines the successful characterisation of ultrahigh molecular mass polyacrylamide solutions in terms of discrete solvated polymer coils and coil agglomerates. These features were correlated with the observed flocculation, demonstrating a number of solution state features required to improve flocculation activity.Aqueous solutions of polyacrylamide exhibit time-dependant behaviour affecting viscosity and polymer agglomeration. Improving
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4

Anderberg, Cecilia. "Characterisation and function of cylinder liner surfaces." Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1340.

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<p>The demands on decreased environmental impact from vehicles force the automotive industry to develop engines with reduced engine oil and fuel consumption. Engine oil consumption is recognized to be a significant source of pollutant emissions. Unburned or partially burned oil in the exhaust gases contribute directly to hydrocarbon and particulate emissions. Engine oil and fuel consumption are to a great extend controlled by the topography of the cylinder liner surface.</p><p>Recent engine tests have shown a promising reduction in oil consumption when using cylinder liners with a smoother fi
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5

Campanera, Alsina Josep Maria. "Theoretical characterisation of metallofullerenes." Doctoral thesis, Universitat Rovira i Virgili, 2005. http://hdl.handle.net/10803/9071.

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INFORME FINAL<br/>"Alguns importants descobriments de la ciència són accidentals. Això fou, certament, el cas del ful·lerè C60. Quan ara fa quatre anys, l'any 2000, vaig iniciar el treball d'investigació sobre els metal·loful·lerens m'havien arribat veus de la importància mediàtica d'aquestes noves estructures però no de la intensa història del seu descobriment. Aquesta m'ha fascinat. Sobretot quan l'any 2003 vaig tenir la possibilitat de fer una estada al grup del professor Kroto de la universitat de Sussex (Gran Bretanya). Llavors els textos, sorprenents però inerts, que havia llegit sobre l
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6

Strasser, Stefan. "Nanotechnological Characterisation of Biomaterials." Diss., lmu, 2007. http://nbn-resolving.de/urn:nbn:de:bvb:19-78763.

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7

Hedlund, Joel. "Bioinformatic protein family characterisation." Doctoral thesis, Linköpings universitet, Bioinformatik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-61754.

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Biological research is necessary; not only to further our understanding of the processes of life, but also to combat disease, hunger and environmental damage. Bioinformatics is the science of handling biological information. It entails integrating, structuring and analysing the ever-increasing amounts of available biological data. In practise it means using computers to analyse huge amounts of very complicated data taken from a field that is only partially understood, to see the hidden trends and connections, and to draw useful conclusions. My thesis work has mainly concerned the study of prot
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8

Lavelle, S. P. "Characterisation of bioactive aerosols." Thesis, London South Bank University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618633.

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9

Leivers, Shaun. "Characterisation of bacterial exopolysaccharides." Thesis, University of Huddersfield, 2011. http://eprints.hud.ac.uk/id/eprint/12014/.

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In this project, the structures of exopolysaccharides (EPS) produced by bacterial strains were characterised. The current techniques utilised for structural elucidation were also investigated. The structure of the novel EPS isolated from the fermentation of the lactic acid bacteria(LAB) strain, Lactobacillus helveticus Rosyjski, has been characterised. The strain of LAB was grown on skimmed milk supplemented with glucose; the subsequent EPS produced was isolated using established protocols. The 1H NMR spectrum identified the presence of five anomeric monosaccharide signals corresponding to the
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10

Moorwood, Catherine L. "Neuronal characterisation of syncoilin." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491501.

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Syncoilin is a member of the intermediate filament protein family. It is highly expressed in skeletal and cardiac muscle, where it binds to the dystrophin associated protein complex, via a-dystrobrevin. Syncoilin is increased in the muscles ofpatients with muscular dystrophies. Previous data from this laboratory indicated that syncoilin is also expressed in neurons, but its function in the nervous system is unknown. The aim ofthis thesis was to determine the neuronal function of syncoilin, by the identification of its binding partners. This is an important question because cytoskeletal dynamic
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11

Gillespie, Philip David. "Inline blind sensor characterisation." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.726355.

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The measurement of rapidly changing temperature fluctuations is a challenging problem due to the inherent limited bandwidth of temperature sensors. This results in a measured signal that is a lagged and attenuated version of the true input signal. Compensation can be performed provided an accurate, parameterised model of the sensor is available. However, the sensor characteristics are strongly dependent on the measurement environment, which is often time-varying and cannot be determined a priori. To account for the changing characteristics, the sensor model must be estimated in-situ, thereby r
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12

Mölling, Paula. "Genetic characterisation of meningococci /." Linköping : Örebro : Univ. ; Örebro Medical Centre Hospital [Universitetssjukhuset], 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/med697s.pdf.

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13

Clark, R. A. C. "Characterisation of neural glycoproteins." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363826.

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14

Thoree, Cheetranjan Vinay. "Characterisation of gastrointestinal microparticles." Thesis, King's College London (University of London), 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555927.

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Intestinal Peyer's patches, through their specialized M cell-rich epithelium, can act as a portal of entry for bacteria, viruses, macromolecules and particles. Particles can be further classified as exogenous particles such as those derived from the diet in the form of food additives or endogenous particles which result from calcium and phosphate precipitation in the mid-distal intestinal lumen. Although exogenous dietary particles have been found to accumulate in "pigment cells" at the base of the human Peyer's patch, little is known about calcium phosphate particles. This thesis aimed (i) to
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15

Ferguson, L. J. "Characterisation of nidovirus primases." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557407.

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SUMMARY (To be printed on this form) Replication of the -30-kb positive-sense RNA genomes of the Coronaviridae and transcription of a set of subgenomic mRNAs is mediated by a large protein complex of nonstructural proteins (nsps) involving two RNA-dependent RNA polymerase activities that, in coronaviruses, are associated with nonstructural proteins (nsp) 8 and 12. To further characterise the RNA polymerase (primase) activity suggested to be associated with coronavirus nsp8, homologs from Human coronavirus 229E (HCoV- 229E) and the bafinivirus White bream virus (WBV), along with a set of mutant
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16

Iyer, N. G. "Functional characterisation of p300." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604977.

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p300, originally discovered as an adenoviral El A binding protein, is a putative tumour suppressor gene. Mutational analysis done in our laboratory found truncating mutations in a range of cell lines and primary tumours, in some cases associated with loss of the second allele. In order to study the possible pathways leading from p300 loss to cancer, I adopted a somatic cell line knock out strategy to study the gene function in a human epithelial system. Using homologous recombination mediated gene targeting I successfully disrupted p300 in HCT116, by targeting the single expressed, truncated a
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17

Ramirez, Pacheco Carlos. "Radiometric partial discharge characterisation." Thesis, University of Strathclyde, 2007. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21654.

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The process of generation, transmission and distribution of electric energy appears to be very simple. However, the continuous flow of power through electric networks is affected by several factors, normally of two kinds: failures caused by ageing of insulating materials and failures caused by defective equipment or design. The energy supplied to small and big consumers can be interrupted for long periods causing disastrous economic losses. The origin of most failures normally is found in electrical insulation, which is an essential component in all electrical systems especially in power equip
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18

Aarseth, Larsson Kim. "Chemical Characterisation of Nitrocellulose." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-41416.

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Nitrocellulose is the main component in many types of ammunition, propellants and explosives. The principles of production for nitrocellulose have not changed much since the 19th century when it started being industrially produced for this purpose. The character of the nitrocellulose has a large effect on the end products abilities. The aim of this study was to develop a method that would be able to characterise and distinguish between nitrocellulose from different manufacturers to be able to relate the character of the nitrocellulose to the properties of ammunition, propellants and explosives
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19

Bend, Stephen Leonard. "Coal characterisation and combustion." Thesis, University of Newcastle Upon Tyne, 1989. http://hdl.handle.net/10443/361.

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There are three related studies within this thesis that examine the relationships between the properties of coals and the characteristics of the chars produced during rapid pyrolysis in a laboratory based Entrained Flow Reactor (EFR) which simulates the rapid rates of heating (104 to 105 °C s-1 ) typical of pulverised fuel boilers. The first study, using a suite of nine coals, investigates the influence of coal rank upon the generation of specific types of char, their respective physical and structural characteristics and their relative combustabilities. The second study, using a suite of twen
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20

Hanboula, Salem Yousef. "Immunological characterisation of dermatophytes." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243208.

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21

Cooper, W. S. "Characterisation of sulpho oils." Thesis, Liverpool John Moores University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375103.

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22

Andrew, M. "Chemical characterisation of rapeseed." Thesis, Liverpool John Moores University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381603.

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23

Anderson, William John. "Molecular characterisation of rhabdomyosarcoma." Thesis, Institute of Cancer Research (University Of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312950.

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24

Thorley, Antony M. "Infrared characterisation of semiconductors." Thesis, University of St Andrews, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278212.

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25

McCormick, Damion K. T. "Perilipin : characterisation and translocation." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388129.

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26

Batty, Michael. "Geometric characterisation of groups." Thesis, University of Warwick, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300650.

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27

Morris, Iestyn L. "Optical characterisation of semiconductors." Thesis, Aberystwyth University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386969.

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28

Zhang, Jiancheng. "Characterisation of bacterial NOS." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270425.

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29

Ikwueme, Stella Ngozichukwu. "Characterisation of polylactide microspheres." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407916.

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30

Sorensin, Troels Seyffart. "Characterisation of DP-1." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243913.

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31

Heise, Charles T. "Biochemical characterisation of RARI." Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437596.

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32

Domann, Roland. "Characterisation of spray unsteadiness." Thesis, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443683.

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33

Hirose, Yuta. "Technology venture emergence characterisation." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/273663.

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Technology entrepreneurs and managers aim to navigate emerging technology ventures and innovations towards successful commercialisation and business development, often over long periods of time. However, this is challenging due to high uncertainties associated with planning and navigating relevant market and business drivers, technological resources and capabilities, and applications. Failure to understand and manage these uncertainties appropriately can lead to undesired consequences and poor outcomes in the realisation of value creation and capture. This research firstly built a knowledge ba
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34

Taylor, William R. M. "Chromatographic characterisation of copolymers." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/13601.

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Copolymers containing hydrophilic and hydrophobic segments find applications as polymeric surfactants in detergent formulations. The properties of such surfactants depend on molecular weight and composition of copolymer chains, and in particular on the heterogeneities in molecular weight distribution and chemical composition distribution within samples. Heterogeneity in copolymer composition may include the presence of a homopolymer which would not be active in a detergent application. In this thesis work is directed to the development of separation methods by reversed phase chromatography to
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35

Gonçalves, Carlos Augusto. "Characterisation of formation heterogeneity." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/35033.

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The characterisation of formation heterogeneities requires a multidisciplinary study of data acquired using a large number of numerical geophysical and geological measurements and a rigorous evaluation of the precision and accuracy of the data. Another essential aspect of the appraisal of any measurement is the quality assessment and quality control of the data. In this work multivariate statistical techniques and an Artificial Neural Network (ANN) are used provide lithofacies characterisation and to identify heterogeneities in complex formations as well as to evaluate the boundaries they gene
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36

Zhou, Jin Chuan. "Biochemical characterisation of KDM2A." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:030faa1d-5d3c-4066-9e9f-a44cd13cf85c.

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Mammalian genomes are characterised by unique regions of non-methylated DNA known as CpG islands (CGIs). These genomic elements are characterised by a high density of CpGs and an elevated GC content compared to the surrounding, bulk of the genome. CGIs are prevalently associated with the 5’ end of genes and represent key nucleation sites where specific transcription factors and chromatin modifiers are recruited to impact on gene function. This thesis is focused at understanding the biochemical properties of the recently discovered H3K36-specific histone demethylase, KDM2A. This enzyme is speci
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Bergman, Anders. "Characterisation of industrial wastes." Licentiate thesis, Luleå tekniska universitet, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16984.

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38

Butler, Paul. "Characterisation of disordered structures." Thesis, University of Kent, 2017. https://kar.kent.ac.uk/62479/.

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In this thesis I will look at how large, complex structures can be interpreted and evaluated using an information theoretic approach. The work specifically investigates techniques to understand disordered materials. It explains a novel framework using statistical methods to investigate structural information of very large data sets. This framework facilitates understanding of complex structures through the quantification of information and disorder. Large scale structures including granular media and amorphous atomic systems can also be processed. The need to deal with larger complex structure
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39

Miell, Matthew Daniel David. "Characterisation of CenH3 nucleosomes." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8010.

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As a centromere-specific protein complex in direct contact with the DNA, CenH3-containing nucleosomes are generally thought to act as the distinguishing epigenetic mark of active centromere location. Confusingly, seemingly disparate models have been proposed for the structure of CenH3 nucleosomes. The most widely supported model is an octameric structure that, like histone H3 nucleosomes, contains two subunits of each histone. Another more contentious, yet persistent model is the hemisome model proposed for fly and human CenH3 nucleosomes. In this case it is suggested that CenH3 nucleosomes co
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40

Wikerman, Fredrik. "Characterisation of alpine skis." Thesis, KTH, Lättkonstruktioner, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203338.

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Skiing is a fast and competitive sport where skiers must push their performance limit to win medals, the di↵erence can be within hundreds of a second. Therefore, technical improvements are essential for assisting in the skier’s improvement. This thesis project is a joint project between KTH and the Swedish Ski Association and Swedish Ski Team with the purpose of obtaining a better understanding of the structural properties of alpine skis, aiming to improve the individual selection process of skis for the Swedish World Cup Skiers. The goal of the project is to develop and evaluate a method to c
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41

Perry, Alexandra L. "Characterisation of propionibacterium acnes." Thesis, Aston University, 2004. http://publications.aston.ac.uk/11015/.

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This thesis has sought to investigate the phenotypic, genetic and antigenic properties of P. acnes strains isolated from sciatica patients undergoing microdiscectomy, normal skin, blood cultures, prosthetic hips and acne lesions. Isolates’ phenotype was examined by determining their biotype by analytical profile index, antimicrobial susceptibility, virulence factor expression and serotype. A molecular typing method for P. acnes was developed using random amplification of polymorphic DNA (RAPD). Patent serum was used to screen P. acnes strains for antigens expressed in vivo and the chemical com
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42

Robertson, Martin Dennis. "Characterisation of avian reoviruses." Thesis, Robertson, Martin Dennis (1986) Characterisation of avian reoviruses. PhD thesis, Murdoch University, 1986. https://researchrepository.murdoch.edu.au/id/eprint/53691/.

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Avian reoviruses have been associated with a wide variety of diseases in poultry, including tenosynovitis and a runting/stunting syndrome. This thesis describes an investigation of outbreaks of tenosynovitis and the runting/stunting syndrome in commercial poultry in Australia, the isolation and characterisation of avian reoviruses from affected chickens, and attempts to reproduce the 2 disease syndromes with the isolated viruses. The histopathological lesions observed in tenosynovitis-affected chickens were confined to the tendons, tendon sheaths and peritendinous tissues of the hock regio
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43

Harrer, Manfred. "Characterisation of steering feel." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601495.

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The steering feel and handling characteristics of a vehicle are vital factors in determining the overall driving pleasure. Time-consuming and expensive development is required by the vehicle manufacturer before this quality can be achieved and improved. Due to a lack of reliable links between subjective assessments and vehicle measurements, the tuning process still relies primarily on subjective assessments by test drivers. In order to improve the understanding and enable the prediction of steering feel, a methodology to describe steering feel objectively is required. Therefore the scope of th
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44

Dai, Shuo. "Mechanical characterisation and numerical modelling of 3D woven composites." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16221.

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Three-dimensional woven composites were developed to improve the through-thickness properties which conventional two-dimensional laminate composites currently lack. However, these textile composites generally show lower in-plane mechanical properties due to fibre crimping, and also encounter modelling difficulties due to the complex geometries. In this thesis, the static and fatigue mechanical behaviour of several types of 3D woven composites were experimentally characterised, the influence of the weave architecture on the mechanical performance was revealed, and meso/macro scale numerical mod
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45

Lajhar, Salma A. Ibsais. "Phenotypic and Genotypic Characterisation of Escherichia coli O26 Strains Isolated from Cattle and Clinical sources in Australia." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/371149.

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Escherichia coli (E. coli) O26 is the second most common serogroup of enterohaemorrhagic E. coli (EHEC) implicated in foodborne illness globally with outbreaks occasionally linked to the consumption of cattle related food products. This study was performed to gain insights into the phenotypic and genotypic characteristics of E. coli O26 circulating in Australian cattle and those strains from clinical cases. Initial characterisation determined that E. coli O26 are a genetically diverse group that can belong to a range of pathotypes including: EHEC, atypical enteropathogenic E. coli (aEPEC), pot
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Upadhyay, Ambika Prasad. "Characterization of photothermal flowering responses in maturity isolines of soyabean (Glycine max)." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.331994.

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47

O'Donnell, Martin. "Finite element modelling of a multi-stage stretch-forming operation using aerospace alloys." Thesis, University of Ulster, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270463.

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48

Tram, Greg C. "Characterisation of Bacterial Biofilm Formation." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/392378.

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Campylobacter jejuni is the largest contributor to bacterial gastroenteritis in the developed world. In addition to intestinal infections, this organism is implicated in the autoimmune neurodegenerative condition known as Guillain–Barré syndrome. C. jejuni is a common commensal organism of warm-blooded animals and avians that is passed to humans through contaminated food products or water. Biofilms are a specialised method of growth seen in many microbes and provide a means for bacteria to remain viable in harsh environmental conditions. The biofilms of C. jejuni have been hypothesised to play
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49

Andersson, Mikael. "Characterisation of Chromatography Media Aimed for Purification of Biomolecules." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-234743.

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Chromatography media (resins) are very important for and widely used by the biopharma industry in large scale production of biopharmaceuticals, e.g. monoclonal antibodies. Today there are several hundred biopharmaceuticals released globally on the healthcare market. This thesis discusses various strategies and methods for the characterisation of chemical and functional stability of chromatography media. In addition, various analytical techniques used in these areas were evaluated and applied. Further, more specific physical and chemical characterisation methods were evaluated and applied to ex
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50

Sinclair, Derek C. "Electrical characterisation of ferroelectric oxides." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 1989. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59668.

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