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Dissertations / Theses on the topic 'Biology and microbiology'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Hole, Stephen J. W. "Biology, microbiology and management of enhanced carbetamide biodegradation /." Title page, abstract and contents only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phh729.pdf.

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2

Arat, Seda. "A Systems Biology Approach to Microbiology and Cancer." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/75149.

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Systems biology is an interdisciplinary field that focuses on elucidating complex biological processes (systems) by investigating the interactions among its components through an iterative cycle composed of data generation, data analysis and mathematical modeling. Our contributions to systems biology revolve around the following two axes: - Data analysis: Two data analysis projects, which were initiated when I was a co-op at GlaxoSmithKline, are discussed in this thesis. First, next generation sequencing data generated for a phase I clinical trial is analyzed to determine the altered micro

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3

Athukorala, Arachchi Seneviratne Chaminda Jayampath. "Molecular microbiology of candida biofilms." Thesis, Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B4068751X.

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4

Mossman, Sally Patricia. "Investigations into the biology and molecular biology of alphaherpesvirus saimiri." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291968.

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5

Leahy, Michael. "The molecular biology of Thogoto virus." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268143.

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6

Oliveira, Daniel Paulo de. "Produção de amilase por Bacillus licheniformis utilizando meios de baixo custo." Universidade Católica de Pernambuco, 2007. http://www.unicap.br/tede//tde_busca/arquivo.php?codArquivo=186.

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A indústria biotecnológica enzimática vem aumentando progressivamente nas últimas décadas com a utilização e produção de diversas enzimas microbianas. As amilases são enzimas que hidrolisam moléculas de amido liberando diversos produtos secundários, incluindo as dextrinas e progressivamente por unidades de glicose. Apresentam um amplo campo de aplicações na indústria de alimentos, em cervejarias e bebidas fermentadas, em cereais para alimentação infantil e ração animal, indústrias de papel e celulose, têxtil, de detergentes, química, farmacêutica e produtos de limpeza. Foram realizados ensaios

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7

Barakat, Mohammad 1962. "Seasonal fluctuation in soil and thatch microbial populations in an 80%:20% sand:peat creeping bentgrass putting green." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277909.

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A study was conducted to determine the influence of a bio-organic amendment 'Greens Restore' (6N-1P-3K) and a nitrogen fertilizer (21N-7P-14K) on the microbial numbers, thatch degradation, and soil respiration. A complete randomized block design was used with 3 treatments/4 replications. Both treatments were applied at a rate of 28.6 kg N/ha every 60 and 30 days for the first and second year respectively. No significant changes were observed due to treatments for all the parameters measured except for soil fungi and thatch thickness. Control plots had the lowest and the fertilized plots had th

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8

Kamel, Sahar Hussein. "Adeno-associated virus (AAV) transduction of primary human CD4+T lymphocytes." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1409957026.

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9

Berry, Thomas Mark 1959. "Frequency of Listeria monocytogenes and antibiotic resistant Vibrio spp. in raw, frozen shrimp." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278230.

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Samples of imported shrimp from China, Ecuador, and Mexico were obtained from wholesale and retail markets, and aerobic plate counts (APC) using four temperature/salinity regimes, frequency of Listeria spp. and Vibrio spp. contamination, and antibiotic resistance patterns of Vibrio spp. were determined. Significant differences in APC were observed only between country and wholesale versus retail samples. Wholesale shrimp products were consistently excellent quality with respect to APC; problems observed were at the retail level. Listeria spp. and L. monocytogenes were isolated from 16.7% and 6

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10

Meer, Ralph Raymond. "Rapid methods for the detection of toxigenic Clostridium perfringens." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/290593.

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Clostridium perfringens may be the most widely occurring bacterial pathogen and is responsible for a variety of diseases in both humans and animals. The virulence of this organism is associated with the ability to produce an estimated 17 potential exotoxins. The production of one or more of the five major toxins (α,β,ε, and ι) is the basis for placing isolates into five toxigenic types, A through E. Enterotoxin (CPE), is not used in typing but is considered a major virulence factor. A multiplex PCR genotyping assay was developed, utilizing primers derived from sequences of cpa, cpb, etx, iA, a

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11

Nichols, Gordon L. "The biology, epidemiology and typing of Cryptosporidium spp." Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/2235/.

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12

Crayford, Georgina. "The infection biology of pig associated Salmonella." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/2014260/.

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Non-typhoidal serotypes of Salmonella enterica remain important foodborne pathogens worldwide and the frequent emergence of epidemic strains in food-producing animals is a risk to public health. In recent years, Salmonella 4,[5],12:i:- isolates expressing only the first phase of the two flagellar antigens (FliC) have emerged and increased in prevalence worldwide. In Europe, the majority of 4,[5],12:i:- isolates belong to phage types DT193 and DT120 of Salmonella Typhimurium and pigs have been identified as the reservoir species. In this study, a number of pig-derived monophasic (4,[5],12:i:-)

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13

Biot-Pelletier, Damien. "Structural biology of energy-transducting proteins from «Escherichia coli»." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95207.

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The cell envelope of Gram-negative bacteria such as Escherichia coli is composed of an outer (OM) and cytoplasmic membrane (CM), which enclose a space known as the periplasm. For acquisition of essential nutrients, bacteria must transport molecules across both membranes. The import of certain scarce nutrients, such as iron and vitamin B12, requires the input of energy; however, the OM is devoid of any source of energy. To drive the transport of scarce nutrients across the OM, bacteria use the proton motive force of the CM. The TonBExbBExbD protein complex located within the CM is responsible

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14

Bonnett, Tracey Clare. "Molecular biology of dimethyl sulphoxide respiration in photosynthetic bacteria." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282958.

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15

Barnard, Glenn Norman. "NMR studies of the biology of poly-#beta#-hydroxybutyrate." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304176.

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16

Khayat, Fahad Ali Abdulghany. "Detection of Abnormal Milk with Impedance Microbiology Instrumentation." DigitalCommons@USU, 1986. https://digitalcommons.usu.edu/etd/5332.

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Mastitic milk was detected by obtaining conductance measurements using an impedance microbiology Bactometer® 120 SC instruments. Conductance readings taken after 30 min at 25'C separated normal and abnormal milks when readings differed by more than 3% from the variance among instrument module wells. Samples blended from four quarters of a cow indicated milk from one quarter was abnormal if the salt level in the abnormal quarter raised the blend conductivity above that of normal samples and variance among the wells. Either solid or liquid substrates that contained bacterial stimulants could be

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17

Brophy, Lisa. "The molecular biology of capsulation of Haemophilus influenzae type b." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260718.

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18

Madsen, Mary Ann. "Growth phase-specific promoters of cyanobacteria for synthetic biology applicatations." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7359/.

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19

Jenkins, Mary K. "Metabolism of Herpes Simplex Virus 1 infected RAW 264.7 macrophages." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472203113.

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20

Nathwong, Boonyanath. "Molecular biology studies of rice tungro bacilliform virus P194 N-terminus." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361484.

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21

McKenna, Paula Mary. "The study of the biology, immune response and diagnostic testing of Hantaviruses." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317460.

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22

Harper, D. R. "The molecular biology of Newcastle disease virus infection in tissue cultured cells." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371916.

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23

Carter, Jonathan Philip. "Population biology of Trichoderma spp. used as inoculants." Thesis, University of Reading, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329046.

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24

Plater, Richard William. "The molecular biology of nonactin biosynthesis and resistance in Streptomyces griseus ETH A7796." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358185.

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25

Ramsay, Alan Gregor. "Studies on the molecular biology and ecology of butyrate-producing human colonic bacteria." Thesis, University of Aberdeen, 2003. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU168350.

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The role of butyrate in the metabolism and development of a healthy colonic epithelium and thus in the prevention of colonic diseases is well documented, but the ecology of butyrate-producing bacteria is little understood. Dietary polysaccharides that are not digested in the small intestine are a major source of energy for the commensal bacteria resident in the large intestine. Resistant starch makes up a large proportion of dietary substrate reaching the human colon and is also reported to be butyrogenic. Recent studies have shown that low G+C% Gram-positive bacteria, which include butyrate-p

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26

Winkler, Wade C. "RNA elements required for T box antitermination." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1381251178.

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27

AraÃjo, Jackson de Lima. "Arthropods and attributes soil microbiology in fruit trees en Vale do Curu-CE, Brasil." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13481.

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A major concern related to agricultural management systems used by the man lies on the effects on biological processes in the soil, whose action within ecosystems aiming at the farm, modifies the intensity of these processes under use of techniques that exclusively aim to maximize crop yield. One of the challenges of research in soil biology is precisely understand the impacts on the complex interactions of all soil organisms at the community level by the management that are critical in maintaining soil quality. The objective of this work was to evaluate the influence of management practices o

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28

Moncivaiz, Jessica. "Differences in fecal metabolite profiles from geographically distinct populations of adolescents." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1452675142.

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29

Subahi, Riham Abbas. "Changes in Cytoskeleton Proteins in HSV-1 Infection of J774A.1 Macrophage Phenotype." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1463587318.

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30

Morse, Mary Ann. "The molecular biology and evolution of Thogoto virus : a study of the viral envelope glycoprotein." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333261.

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31

Hood, D. W. "The application of molecular biology techniques to the taxonomy of the pink pigmented facultative methylotrophs." Thesis, University of Warwick, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373080.

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32

Rosa, Tiago Pereira da 1984. "Prevalence of Treponema spp. in endodontic retreatment-resistant apical periodontitis = Prevalência de Treponema spp. em lesões periapicais associadas ao insucesso do retratamento endodôntico." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290354.

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Orientadores: Rogério de Castilho Jacinto, Brenda Paula Figueiredo de Almeida Gomes<br>Texto em português e inglês<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-22T14:36:20Z (GMT). No. of bitstreams: 1 Rosa_TiagoPereirada_M.pdf: 1839317 bytes, checksum: 3802ff7b07872cf4f364ef3f4fd5d1d7 (MD5) Previous issue date: 2013<br>Resumo: Infecções extrarradiculares representam um obstáculo para o reparo dos tecidos apicais após o retratamento endodôntico não-cirúrgico. Treponemas são espiroquetas anaeróbias

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33

Alves, Karina Ferreira. "Prática de ensino diferenciada em Microbiologia para alunos do Ensino Médio." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/97/97138/tde-04122018-150936/.

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Microbiologia é a ciência que estuda os microrganismos e esses estão presentes no dia a dia de diversas maneiras, como por exemplo: na produção de alimentos, no meio ambiente, no sistema digestório humano, nas causas de doenças, entre outros. Os microrganismos são seres microscópicos, invisíveis a olho nu. São representados por vírus, bactérias, protozoários, algas e fungos. Por suas infinitas espécies, por serem os habitantes mais antigos do planeta, pelas suas resistências e sobrevivência e por estarem presentes em qualquer lugar o que revela a importância de seu conhecimento, o presente tra

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34

Tai, Lee-Hwa. "Elucidation of ligand and function for the mouse plasmacytoid dendritic cell receptor Ly49Q." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:8881/R/?func=dbin-jump-full&object_id=92345.

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35

Isaac, Dervla Tamara. "Identification and characterization of virulence factors in the fungal pathogen Histoplasma capsulatum." Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3378490.

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36

Swem, Lee Robert. "Genetic and biochemical characterization of the redox sensing mechanisms of the sensor kinase, RegB from Rhodobacter capsulatus." [Bloomington, Ind.] : Indiana University, 2005. http://wwwlib.umi.com/dissertations/fullcit/3167810.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2005.<br>Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 1884. Adviser: Carl E. Bauer. "Title from dissertation home page (viewed Nov. 22, 2006)."

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37

Wagner, Jennifer Kay. "Investigations into the structure and function of the Caulobacter crescentus stalk." [Bloomington, Ind.] : Indiana University, 2005. http://wwwlib.umi.com/dissertations/fullcit/3178474.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2005.<br>Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 2947. Adviser: Yves V. Brun. "Title from dissertation home page (viewed Dec. 4, 2006)."

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38

Choquet, Christian. "Physiological studies of a moderately halophilic bacterium, Vibrio costicola." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5591.

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In vitro protein synthesis in Vibrio costicola (polyuridilic acid (poly(U)) -directed incorporation of phenylalanine) was studied. As shown previously (Kamekura and Kushner, 1984), Cl$\sp-$ ions inhibited protein synthesis. The inhibitory effects were partly reversed by glutamate and betaine, both of which are concentrated within cells of V. costicola. Washing ribosomes with inhibitory NaCl concentrations did not interfere with their ability to carry out protein synthesis later in optimal (low) salt concentrations. The main site of action of Cl$\sp-$ in this system is on the binding of ribosom

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39

Choma, Christin Teresa. "Structural characterization of the insecticidal protein from Bacillus thuringiensis." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5624.

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During sporulation, Baccilus thuringiensis subsp. kurstaki produces a crystalline inclusion body which is toxic upon ingestion by susceptible Lepidopteran larvae. The major component of crystals from Lepidopteran-specific subspecies of B. thuringiensis is a 130-kDa protein, protoxin. Following ingestion by susceptible larvae, protoxin is proteolyzed to yield a 58-70 kDa toxic fragment, toxin. In the present study, a simplified procedure was used for isolating and purifying toxin generated by the tryptic digestion of protoxin from B. thuringiensis subsp. kurstaki HD-73. Characterization of this

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40

Sattar, Sheikh Ahsan. "Cloning and nucleotide sequence analysis of the P3 region of enterovirus 70." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5637.

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In this study, nucleotide and amino acid sequence analyses were conducted in the P3 region of the Enterovirus 70 genome. Nucleotide and amino acid sequence alignments show that Enterovirus 70 is a picornavirus and is closely related to polioviruses and coxsackieviruses. The 3D$\sp{\rm pol}$ and 3B(VPg) of Enterovirus 70 show higher similarity to the corresponding regions of Poliovirus 1, while two other regions, 3A and 3C$\sp{\rm pro}$, are more closely related to Coxsackievirus B3 sequences. These observations suggest that the P3 region of Enterovirus 70 diverged from poliovirus like sequence

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41

Porter, Suzanne L. "Evidence of multiple cellulase forms in Trichoderma harzianum E58 and their significance in cellulose hydrolysis." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5829.

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The occurrence of multiple cellulase components of Trichoderma harzianum E58 and the implications of their existence on the hydrolysis of cellulose were examined. A single commercial enzyme preparation, Novo-Celluclast, showed different extents of hydrolysis of several cellulosic substrates over time. The filter paper activities of six batches of T. harzianum E58 showed poor correlation with the ability of these enzymes to hydrolyze other cellulosic substrates over extended periods of time. Hydrolysis of a single substrate by a single enzyme preparation resulted in similar slopes in reducing s

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42

Rud, Erling William. "Defective interfering particles and viral interference: A model for the mechanism of heterotypic interference." Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5869.

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43

Ansari, Shamim Alam. "Studies on the potential of hands as vehicles for the spread of selected human pathogenic viruses and bacteria." Thesis, University of Ottawa (Canada), 1991. http://hdl.handle.net/10393/5906.

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In this study, a simple protocol was developed to test the survival of a human rotavirus (HRV), rhinovirus type 14 (RV-14), and parainfluenzavirus type 3 (HPIV-3) as well as Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) on human hands. HPIV-3 lost nearly all of its infectivity within the first 60 minutes on the fingerpads. In contrast to this, nearly 16% of infectious RV-14 could be recovered even after 3 hours. The poor survival of HPIV-3 on human hands prompted us to investigate its survival on stainless steel disks (1 cm in diam.) under ambient conditions. The ability of

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44

Meysick, Karen C. "Trichomonas vaginalis and vaginal flora: Interactions in a mouse model." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5972.

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The flagellated parasite, Trichomonas vaginalis, is one of the most commonly encountered genital pathogens. Despite its frequent incidence, pathogenic mechanisms of T. vaginalis are not well characterized. The first section of this project involved the ability of T. vaginalis to grow in serum-free medium. By employing a cell culture system, it was demonstrated that T. vaginalis can exhibit growth in the absence of serum. McCoy cells utilized in the system did not appear to secrete growth factors responsible for this proliferation. The second part of this project involved establishment of a mou

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45

Pham, Thi Tham. "Anaerobic degradation of aircraft deicing fluid (ADF) in upflow anaerobic sludge blanket (UASB) reactors and the fate of ADF additives." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6053.

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A central composite design was employed to methodically investigate anaerobic treatment of aircraft deicing fluid (ADF) in bench-scale Upflow Anaerobic Sludge Blanket (UASB) reactors. A total of 23 runs at 17 different operating conditions were conducted in continuous mode. The development of four empirical models describing process responses (i.e., chemical oxygen demand (COD) removal efficiency, biomass specific acetoclastic activity, methane production rate, and methane production potential) as functions of ADF concentration, hydraulic retention time (HRT), and biomass concentration is pres

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46

Ogbebor, Omokhaye P. "Studies on rabies virus polymorphism." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6079.

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Rabies viruses have very simple genomes made up of single-stranded, negative sense, non-segmented ribonucleic acid (RNA). Most, if not all RNA virus populations may exist as complex mixtures of genetic and phenotypic variants often referred to as quasispecies populations. A quantitative relative fitness assay has previously been used to demonstrate loss of fitness in RNA virus populations due to Muller's Ratchet and to show gains of fitness by natural selection during virus passages. Due to their mutation rates, rapid replication, large population sizes and controlled (variable or constant) ho

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47

Faucher, Sylvie. "Cyno-EBV, a cynomolgus monkey EBV-like virus, and its latent membrane protein 1 oncogene." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6109.

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Epstein-Barr virus (EBV) and its oncogene, the latent membrane protein 1 (LMP1), are associated with many human malignancies. Likewise, EBV-like viruses have been associated with lymphomas in immunosuppressed cynomolgus monkeys. This study characterizes the biology of Cyno-EBV, a cynomolgus monkey EBV-like virus, including the structural proteins, antigenic relatedness to EBV and molecular and functional analysis of its LMP1 homologue. Cyno-EBV infection is ubiquitous in its host species. In vitro , Cyno-EBV immortalized cynomolgus monkey but not human B cells. The electrophoretic profile of C

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48

Ashby, Deborah. "Feasibility of testing recombinant oral attenuated Salmonella vaccines in rabbits." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6248.

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An effective vaccine against chancroid could take the place of therapeutic control programs, offering long-lasting protection without the risk of widespread drug resistance. Orally administered recombinant attenuated Salmonella strains are used as vaccine vectors to deliver heterologous, pathogen-derived antigens to intestinal mucosal associated lymphoid tissue, and to provide vaccine adjuvancy. Chancroid vaccines are tested in a temperature-dependent rabbit model of experimental H. ducreyi infection. However, testing of recombinant attenuated Salmonella strains as vaccine vectors has never b

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49

Mbisa, Jean Lutamyo. "Investigation of the virus-host cell interactions involved in reovirus inclusion formation." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6267.

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Reovirus has a segmented dsRNA genome enclosed in a nonenveloped double capsid shell. Reovirus infection induces the formation of large cytoplasmic inclusions that serve as the major site for viral assembly. These inclusions contain the intermediate filament vimentin, in addition to viral proteins, RNA, mature and immature viral particles. However, the viral or host proteins involved in the formation of reovirus inclusions have not been identified, neither has the mechanism by which viral RNA and proteins are directed to these sites. In this study the reovirus M1 gene, which encodes the minor

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50

Medeiros, Diane. "Epidemiological typing of Campylobacter clinical and food isolates using pulsed-field gel electrophoresis." Thesis, University of Ottawa (Canada), 2002. http://hdl.handle.net/10393/6279.

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Campylobacteriosis is the most frequently reported type of acute bacterial gastroenteritis in Canada. In 2000 alone, 11,846 campylobacteriosis cases were reported in Canada. The majority of these cases are sporadic, and their causes remain unknown. An attempt was made to gain a better understanding of the epidemiology of campylobacteriosis, both by identifying foods and environments that harbor Campylobacter spp., and by characterizing clinical, food and environmental isolates using pulsed-field gel electrophoresis (PFGE). Spot maps were also used to determine the geographical relationship of

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