Dissertations / Theses on the topic 'S 405 UL 2008 S228'
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Sanou, Dia. "Impact d'une intervention alimentaire sur le statut en fer d'un groupe d'orphelins et enfants vulnérables d'âge préscolaire du Burkina Faso." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25508/25508.pdf.
Full textSanscartier, Michel. "Détermination du profil clinique et des interventions nutritionnelles dispensées pour les quatre types de clientèles présentes dans les établissements de soins de longue durée pour évaluer les besoins d'effectifs nutritionnistes cliniciens." Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/23688/23688.pdf.
Full textLamhoujeb, Safaa. "Human noroviruses : characterization, detection, and evaluation of their persistence in foods and on food-contact surfaces." Doctoral thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25360/25360.pdf.
Full textLacasse, Marie-Lou. "L'enracinement des rosiers 'Champlain' et 'Royal Edward' fleuris in vitro." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25801/25801.pdf.
Full textBouchard, Julie. "Épidémiologie et évaluation de systèmes prévisionnels comme outil de lutte raisonnée contre le blanc (Sphaerotheca macularis) chez le fraisier à jour neutre et conventionnel." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25892/25892.pdf.
Full textMorin, Chantale. "Étude morphologique et physiologique du rhizome du bleuet nain : une contribution à l'amélioration de la régie de culture." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25812/25812.pdf.
Full textThere have been very few studies on the rhizome of the lowbush blueberry, and as such, the effects of cultural practices on that specific rhizome are unknown. Three experiments have been conducted. The first one dealt with the effects of fertilization on the rhizome and its development depending on the age of the blueberry field and the cultural cycle phase (vegetation or harvest) at four different times during the season. The second and the third experiments dealt with the impact of rhizome severing and stem pruning at different heights in newly planned blueberry fields and their density. Fertilization fostered the development of new rhizomes with a higher number of buds, but did not change their sugar content. The severing stimulated a lot of buds, and it was noticed that the segments’ regeneration potential was linked to their diameter and length. Pruning at less than 1 cm from the ground boosted stemming from the rhizome.
Julien, Marie-Claude. "Origine et diversité des clostridies dans la chaîne de production du lait." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25392/25392.pdf.
Full textReid, Marie-France. "Situation financière des fermes laitières du Québec : évolution 1999-2008." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29714/29714.pdf.
Full textMimee, Benjamin. "Détermination du spectre d'activité et du mode d'action de la flocculosine, une molécule antimicrobienne isolée de Pseudozyma flocculosa." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25800/25800.pdf.
Full textLemay, Nicolas. "Caractérisation des facteurs de compétence de l'ovule bovin." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25245/25245.pdf.
Full textClément-Mathieu, Guillaume. "Évaluation de la croissance et de l'activité antagoniste de Pseudozyma spp. en conditions in situ." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25419/25419.pdf.
Full textAudy, Julie. "Approche transcriptionnelle pour l'étude de gènes chez Bifidobacterium longum CRC 002." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25448/25448.pdf.
Full textLandry, Josée. "Impacts environnementaux d'une nouvelle technique de récolte de la tourbe." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25566/25566.pdf.
Full textRivest, David. "Cultures intercalaires avec arbres feuillus : effets sur la disponibilité de la lumière, la qualité du sol et la productivité des plantes associées." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25845/25845.pdf.
Full textBlain-Fortin, Marianne. "Application de l'analyse de fragments de restriction terminaux et des banques de clones pour interpréter la dynamique des populations bactériennes de la sève d'érable au Québec." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25559/25559.pdf.
Full textBégin, Geneviève. "Potentiel d'utilisation du bran de scie comme substrat de culture pour la tomate de serre : phytotoxicité, croissance et productivité." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25341/25341.pdf.
Full textMarquis-Duval, François-Olivier. "Isolation et valorisation des constitutants de la carapace de la crevette nordique." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/19780.
Full textMotard-Bélanger, Annie. "Étude de l'impact des acides gras trans de source naturelle sur les lipoprotéines plasmatiques." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25332/25332.pdf.
Full textMassie, Sophie. "Impacts d'une mousse ombrageante localisée entre les deux films de polyéthylène sur le rendement de trois espèces horticoles en serres commerciales." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25253/25253.pdf.
Full textBertrand, Marie-Ève. "Étude des propriétés gélifiantes et viscosifiantes de systèmes mixtes isolat de protéines de lactosérum-polysaccharides en conditions associatives." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25166/25166.pdf.
Full textProtein polysaccharide interactions depend on both environmental conditions and intrinsic properties. Results are co-solubility, complexation and incompatibility. Complexation and incompatibility have demonstrated improvement of functional properties of mixed systems compared to those of the individual components. Incompatibility being the rule, the aim of this study is to widen knowledge on functional properties of mixed protein-polysaccharide systems in presence of compatibility or associative interactions and to characterise the new emerging functional properties. A first mixed system of whey protein isolate-xanthan has been studied for its gelling abilities following pH and protein-polysaccharide ratio variations. Following application of a thermal treatment, the solution passed from compatible to incompatible. Gelation was demonstrated by an increase in elastic modulus (G’) due to incompatibility as observed by confocal laser scanning microscopy. Addition of NaCl increased this incompatibility and made it excessive at a certain critical concentration leading to loss in G’. Compatibility has then been studied on a whey protein isolate-pectin system. Varying pH, biopolymer total concentration and protein-polysaccharide ratio allowed soluble complex formation which was confirmed with the measurement of absorbance and the number of charge. This compatibility led to a decrease in viscosity in diluted solution due to soluble complex formation while in concentrated solution, complexation rather increased it. A model system of firm yogurt was finally studied following incorporation of whey protein isolate and pectin first complexed and stabilised. Protein and total solid concentrations were kept constant. Milky solutions were acidified with glucono-delta-lactone. Results demonstrate that incorporation of complexes at different concentrations hampers the formation of a homogenous protein network provoking a decrease in gel stiffness and an increase in syneresis. Microscopic observations supported these conclusions. Mixed solutions prepared by carefully condunting complex formation allow the design of new functional properties. However, a better knowledge of these mixes is necessary in order to achieve varied and precise functional properties in food formulation.
Raharitsifa, Narindra. "Optimisation de la lyophilisation du jus de pomme en tapis de mousse." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25536/25536.pdf.
Full textMarchand, Geneviève. "Étude des déterminants génétiques de l'antibiose de Pseudozyma flocculosa, un agent de lutte biologique." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25435/25435.pdf.
Full textChartrand, Jonathan. "Comparaison de méthodes d'estimation pour le calcul de la charge en nitrate à l'exutoire de petits bassins versants en milieu agricole." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25860/25860.pdf.
Full textCampagna, Céline. "Impact d'une mixture environnementale d'organochlorés sur l'ovocyte, le spermatozoïde et l'embryon porcin in vitro." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25487/25487.pdf.
Full textHuman beings and animals, especially those living in the Arctic Circle, are constantly exposed to a wide range of chemical compounds that are present in their environment and food. Among these pollutants, organochlorine compounds are considered as a major group of toxicants that disrupt numerous physiological systems, including the reproductive system. These compounds are rarely present one at a time in the biota; they are mainly present as complex mixtures of different organochlorines, where each compound influences physiological systems in its own way, independently or in concert with other compounds. Organochlorines are present in blood, breast milk, fat tissues, as well as in amniotic, seminal, uterine and ovarian fluids. Therefore, we tested the hypothesis that an organochlorine mixture, reconstituted to mimic that present in the Arctic seal blubber and ingested by the Inuits in Nunavik, disrupts the competence to in vitro maturation, fertilization and development of gametes and embryos, using the pig as a toxicological model for humans. The organochlorine mixture reduced maturation, fertilization and developmental competence of exposed oocytes. It also reduced fertilization and subsequent development of gametes exposed during fertilization, as well as preimplantory development of exposed embryos. We also used a metabolized extract of the same mixture, originating from the serum of sows preexposed to the original organochlorine mixture, to verify the same parameters. The metabolized extract did not reduce oocyte maturation or their competence to fertilization and development; neither did it alter preimplantory development of exposed embryos. Nevertheless, the metabolized extract reduced apoptosis in cumulus cells. In conclusion, the environmentally-relevant organochlorine mixture damages essential functions of gametes and embryos, therefore altering their fertilizing and developmental competence.
Jacqmain, Hugo. "Développement d'un processus d'aménagement durable de l'habitat de l'orignal culturellement adapté aux cris de Waswanipi dans le pessière noire du nord du Québec = : Developement of a sustainable moose habitat management process that is culturally relevant to the Waswanipi Cree in the boreal black spruce forest of Northern Quebec." Doctoral thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20003.
Full textAndersen, Roxane. "Évaluation du succès de la restauration écologique des tourbières à sphaignes : intégrations des critères physico-chimiques et microbiologiques au suivi à long terme." Doctoral thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20579.
Full textMorisset, Anne-Sophie. "Endocrinologie de l'obésité : Relation avec l'alimentation." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25755/25755.pdf.
Full textFontaine, Natacha. "La biodiversité et la restauration des mares de tourbière." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25472/25472.pdf.
Full textIn this thesis, I was interested in increasing restored peatland value by characterizing plant diversity along pool margins and by developing restoration techniques for this particular habitat. I first conducted inventories in restored and natural peatlands in order to measure the contribution of pools to plant diversity of the ecosystem. I also established two experiments to test the efficiency of the moss layer transfer technique in regard to pool vegetation. Inventories showed that pools enhance plant species richness in natural peatlands. Around created pools though, species associated with natural pools were still absent and non-bog species present six years after restoration. Two experiments revealed that Cladopodiella fluitans fragments need to be covered with straw to regenerate. Only Sphagnum mosses colonised pool margins with the moss layer transfer technique; introduced vascular plants had a very low mean cover after three years and adapted techniques should be developed to insure their establishment in restored peatlands.
Demers, Isabelle. "Formes et disponibilité du phosphore des composts utilisés comme amendements des sols agricoles." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25051/25051.pdf.
Full textTremblay, Lucie. "Les interventions à caractère participatif en sécurité alimentaire : relation entre les intentions et les actions." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25135/25135.pdf.
Full textFortier, Marie-Ève. "Influence du sélénium, sous forme organique et inorganique, sur les performances de reproduction des truies prépubères." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25623/25623.pdf.
Full textLepage, Fanny. "Les déterminants financiers et organisationnels de la viabilité économique des entreprises agricoles familiales après leur transfert." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25785/25785.pdf.
Full textGagnon, Hélène. "Effets d'une intervention s'inspirant du nouveau paradigme en matière de gestion du poids sur l'empowerment de femmes aux prises avec des problèmes reliés au poids." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25846/25846.pdf.
Full textBouchard, Sébastien. "Effets du poids d'abattage, de la vitesse de croissance et des sexes sur les caractéristiques musculaires et les relations avec la qualité de la viande." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25598/25598.pdf.
Full textSangaré, Mahamadou. "Optimisation de la culture d'anthères chez l'orge de printemps à six rangs (Hordeum vulgare)." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25691/25691.pdf.
Full textEight hormonal regimes were compared in anther culture on two genotypes of six-row spring barley. Observations were made on four parameters: the number of calli, embryos, green plants and albinos. An analysis of variance showed that the genotype (G), the treatment (T), the harvest rank of the spike (R) and the R X G interaction all had significant impacts on the studied parameters. Altona proved much more productive in anther culture than C97-21-38-3 (19.6 vs 1.3 green plants per 100 anthers). Treatments 3 (0.1 mg/L BAP; 0.1mg/L 2,4-D) and 6 (0.3 mg/L BAP; 0.3 mg/L 2,4-D) yielded between 2 and 3-fold more green plants than the control treatments. Finally, whereas the second and third spikes produced significantly more green plants than the first spike with Altona, no such difference was observed with C97-21-38-3.
Cormier, Étienne. "Mesure de la teneur en eau en continu durant le séchage du foin en balles." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25712/25712.pdf.
Full textMorin-Rivet, Laurence. "Le découplage des aides aux revenus : un concept économique imprécis." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20100.
Full textMartínez, González José Luis. "Utilisation de la coculture de Lactobacillus rhamnosus RW9595M et Lactobacillus rhamnosus R, pour moduler le poids moléculaire de leurs exopolysaccharides produits." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/21139.
Full textLamboni, Damigou. "Les déterminants du remboursement de crédits agricoles au sud-est du Togo : le cas de la COOPEC-Afagnan." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25238/25238.pdf.
Full textHunter, Elizabeth. "Food security in rural Lebanon : links with diet and agriculture." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25163/25163.pdf.
Full textAs part of a larger interdisciplinary project at the American University of Beirut, this research is based on a survey of 798 individuals in three rural areas of Lebanon, a market survey and analysis of government policy. It asks if a trade-off is being made between food quantity and food quality in the attempt to achieve food security. More dietary diversity, measured by food groups, is found to be associated with greater food security; wild plant collection is associated with food insecurity due to problems of endogeneity; and self-production of food was not significantly correlated with food security. Analysis of normal and ‘healthy’ food baskets show that healthier, diverse diets are indeed within the economic reach of people in these communities, however the choice of better quality diets may be undercut by current government policies which unwittingly promote unhealthy foods.
Odobasic, Preradov Andreja. "Effets du benzothiadiazole sur l'induction des mécanismes de défense chez la tomate (Solanum lycopersicum): une étude protéomique comparative." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25525/25525.pdf.
Full textCasademont, Christophe. "Approche des phénomènes de colmatage en électrodialyse dans l'industrie laitière : étude à l'aide de solutions modèles." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25384/25384.pdf.
Full textCakmak, Zaliha. "Optimisation d'un test d'inhibition de l'enzime de conversion de l'angiotensine-1." Master's thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25357/25357.pdf.
Full textVilleneuve, Léda. "Restriction alimentaire des agnelles pré-pubères et impact sur leurs performances de croissance, de reproduction et de lactation." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20425.
Full textCaillard, Romain. "Formation et caractérisation de gels de globulines de soya réticulés comme systèmes de libération de molécules actives." Doctoral thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/20311.
Full textTremblay, Marie-Ève. "Estimation par FT-NIR de la stabilité biologique et de la valeur fertilisante azotée de fumiers." Master's thesis, Université Laval, 2008. http://hdl.handle.net/20.500.11794/25642.
Full textThe C and N cycles are biologically linked and so traditionally represented as the C/N ratio. However, the mineralization and reorganization of organic C and N also depend on biochemical components that make up their biological stability (BSI). The BSI is the linear combination of biochemical fractions. However, as biochemical fractionation is a long and expensive procedure, we calibrated a Fourier transform near infrared spectrometer (FT-NIR) across 148 organic amendments. We also monitored modifications occurring in two beef livestock manures in windrow. FT-NIR predicted efficiently the LIC fraction (r² = 0.99) and BSI (r² = 0.98). One manure in windrow presented an important stratification while the other presented a uniform evolution. Differences are attributable to litter type.
Beaulieu, Julien. "Arabidopsis lyrata : une nouvelle espèce modèle pouvant contribuer à l'étude de l'évolution des génomes et de la spéciation chez les plantes." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25122/25122.pdf.
Full textIquira, Elmer. "Évaluation de la diversité génétique chez deux collections de soja à l'aide de marqueurs microsatellites." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25896/25896.pdf.
Full textTian, Zhigang. "Fractionnement simple et multi-étapes à l'urée d'huiles marines du Québec." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25365/25365.pdf.
Full textVigneault, Christian. "Étude de l'activation de la transcription chez le jeune embryon bovin." Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25339/25339.pdf.
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