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Academic literature on the topic 'Jacuzzis – Microbiologie – Québec (Province)'
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Dissertations / Theses on the topic "Jacuzzis – Microbiologie – Québec (Province)"
Brousseau, Nicholas. "Étude de la qualité de l'eau de spas publics au Québec : une analyse des facteurs influençant la contamination par Legionella spp., Pseudomonas aeruginosa et Escherichia coli." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26741/26741.pdf.
Full textHuppé, Vicky. "Analyse de l'eau de sources naturelles en régions éloignées et étude de gènes conservés dans l'évolution des parasites protozoaires retrouvés dans l'eau." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26419/26419.pdf.
Full textChayer, Marianne. "Étude de la qualité de l'eau de source et d'abreuvement dans les élevages vache-veau en fonction des propriétés physicochimiques et bactériologiques." Master's thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/69911.
Full textLamarche, Andréanne. "Développement d'une méthode de quantification par PCR en temps-réel afin d'étudier la distribution de trois espèces de levures indigènes dans les fromages québécois." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/35003.
Full textThe complex fungal ecosystems of specialty cheeses are increasingly studied because of the potential contribution of indigenous yeasts to the development of the cheese’s sensory properties. They may contribute directly or indirectly by their interaction with the funga l ecosystem or the modification of the cheese matrix. Previous studies detected Cyberlindnera jadinii, Kazachstania servazzii and Pichia k udriavzeviiin both raw milk and/or artisanal specialty cheeses from the province of Québec. The aim of this project was toanalyze the distribution of these three yeast species in cheeses made in the province of Québec. A highly specific and quantitative real time PCR assay was developed to quantitate these yeast species. The rind and the core of cheeses made in the province of Québec were sampled and analyzed using this method. Tracking of C. jadinii and P. k udravzeviirevealed that these yeasts are found within the majority of the analyzed cheeses. This study is the first step toward a better understanding of the possible contribution of these indigenous yeasts species in the development of cheese flavors, and their role in the cheese’s fungal ecosystem.
Jaquemet, Gabrielle. "Sélection et génomique de souches naturelles provenant de fromages du Québec. Génomique comparative de Staphylococcus equorum." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66555.
Full textThe natural microbiota of cheese has often been characterized to study their potential participation in the development of sensorial properties (taste, odour, texture) of the ripened cheeses. A better understanding of their role during cheese ripening is therefore essential in order to have a better control of its quality. Few in-depth genomic analyzes have been carried out on microorganisms of the natural microflora of cheese (non-inoculated microorganisms), while there is a greater interest for inoculated ferments. The genes possessed by bacterial strains of the Quebec terroir can be revealed by the characterization of their complete genome, leading to the prediction of the associated metabolic pathways. This also allows the establishment of the individual contribution of each strain to the production of aromatic compounds. As part of this work, the complete genome of four strains of Staphylococcus equorum were sequenced. Then, a detailed analysis of the genome of these four strains was completed by their assembly and the functional annotation of the ~ 2700 genes predicted in each of the studied strains. Genes potentially implicated in proteolysis, lipolysis and lactose degradation, were found in all S. equorum strains, revealing their potential metabolisms important for cheese. Several interesting attributes of S. equorum were also identified by comparative genomic analyses. First, the relation in between the phylogenetic grouping and the source of isolation of the strains, indicates a possible adaptation of the strains to their ecological niche. The presence of unique or barely shared genes is also a distinguishable characteristic of the studied strains and can have an impact on the metabolisms of the strains. The characterization of the genome of S. equorum strains and the phylogenomic analyzes have provided new information on their role in cheese and clues about their metabolic potential. The genomic data collected will allow during future validations the selection of strains with desirable properties in function of cheese variety to yield cheeses of optimal quality.
Francisque, Alex. "Strategies for improving the surveillance of drinking water quality in distribution networks : application of emerging modeling approaches." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26577/26577.pdf.
Full textFournier, Isabelle. "Salinisation des écosystèmes lacustres par les sels de voirie : perturbations chimiques et réponses des communautés microbiennes." Doctoral thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/68630.
Full textPilote, Jonathan. "Quantification des poussières,des pathogènes humains et des gènes de résistance dans l'air des bâtiments porcins québécois." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66282.
Full textChanges in the swine industry of the Province of Quebec and Canada characterized by larger herds as lead to an increase in confinement levels inside pig buildings. Swine workers occupy these buildings several hours per day, exposing themselves to this confined environment. Pig buildings are environments well known to be heavily contaminated by dust and bioaerosols. Moreover, adverse effects on the health of the occupants are suspected. The present study aims at detecting and quantifying six human pathogens, measuring airborne dust concentrations, and detecting resistance genes of medical importance in the air of swine confinement buildings in the Province of Quebec. To do so, ten pig buildings were visited and air samples were collected in each of them. Human pathogens were investigated using classic culture methods as well as molecular biology. Airborne dust concentrations were calculated using gravimetric methods and a direct measurement of the aerodynamic diameter or particles. Resistance genes were detected by molecular biology. Results obtained during this study reinforce the hypothesis that swine confinement buildings in temperate environments such as the Province of Quebec host high concentrations of bioaerosols which can potentially have adverse effects on the workers’ health.
Létourneau, Valérie. "Impact des systèmes de gestion des lisiers sur la contamination en microorganismes des porcheries et des producteurs de porcs." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27567/27567.pdf.
Full textLavoie, Karine. "Caractérisation microbiologique des laits du terroir québécois servant à la production de fromages de spécialité." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27677/27677.pdf.
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