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Dissertations / Theses on the topic 'Variation pic'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Zangan, Nawal. "Geochemical variations in mantle xenoliths from Ray Pic, Massif Central, France." Thesis, Birkbeck (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309466.

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2

Elgin, Jennifer May. "Determining the Underlying Factors of Fresh Ham Color Variation." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91406.

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Consumers associate meat color with quality. In some cases, especially in fresh and cured hams, the surface of a ham, whole, boneless or sectioned and formed displays a color gradient, which is unsightly and generally is considered of lower quality and must be discounted or processed different where color is less critical to the ultimate value of the resulting product. This disparity in color uniformity across fresh and cured products is sometimes known as two-toning and is most often found in the semimembranosus (SM) and associated muscles of fresh hams and is exacerbated with curing. The u

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3

Busà, Veronica. "La production de /R/ chez les locuteurs de Niamey : une première enquête de terrain." Thesis, Paris 10, 2018. http://www.theses.fr/2018PA100008/document.

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Notre étude s’intéresse à un aspect phonologique : le comportement du phonème /R/ du français parlé à Niamey, capitale du Niger, pays de l’Afrique subsaharienne. L’enquête a été mené selon le protocole du projet international, Phonologie du Français Contemporain (abrégé PFC). Il vise à rassembler un vaste corpus oral de français contemporain à travers toutes les zones francophones du monde.Nos enquêtes de terrain ont été effectuées dans une ville où le français demeure la langue officielle, et où l’on retrouve aussi d’autres langues nationales et/ou locales (haousa, songhaï-zarma, touareg, peu

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4

McEachern, Mary Brooke. "Behavioral variation and genetic structure in dusky-footed woodrats, Neotoma fuscipes /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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5

Hollis-Brown, Lisa Anne. "Individual variation in the antipredator behavior of captive rhesus monkeys (Macaca mulatta) /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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6

Thomas, Daryl Jay. "Using variation and constraint to understand functional elements in the human genome /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.

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7

Lawniczak, Mara Katharine Nielsen. "Phenotypic and genetic variation of post-copulatory responses in Drosophila melanogaster females /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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8

Donahue, Megan Joanna. "The interaction of dispersal and density dependence : resource variation, competition, and gregarious settlement /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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9

Martell, Sarah L. "Carbon and nitrogen abundance variations in globular cluster red giants /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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10

Williamson, Laura. "Spatio-temporal variation in harbour porpoise distribution and activity." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=239337.

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Harbour porpoise (Phocoena phocoena) are the most abundant cetacean in UK waters, and are likely to be affected by a variety of marine industries and activities. This research uses data collected by acoustic recorders (C-PODs) and aerial video surveys to investigate patterns in porpoise detection. The findings can be split into five key themes, and are used to support the development of spatial management and survey recommendations. 1. Porpoise detection changes based on time of day in different habitats, indicating possible differences in diel habitat use and highlighting potential issues wit

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11

Purdy, Adrian J. "Factors impacting the variation in phase of the TCC Seismic Pick, Central Fields region, Gippsland Basin /." Adelaide, 1997. http://web4.library.adelaide.edu.au/theses/09S.B/09s.bp985.pdf.

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12

Nyawalo, Shureka. "La phonologie du français bordelais : une analyse dans le cadre du Projet de la Phonologie du Français Contemporain (PFC)." Thesis, Bordeaux 3, 2017. http://www.theses.fr/2017BOR30034/document.

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Ce travail propose une description et une analyse de la phonologie du français parlé à Bordeaux et dans son agglomération, à partir d’un corpus d’enquêtes réalisées suivant la méthodologie et le protocole développés dans le cadre du Projet de la Phonologie du Français Contemporain (PFC), développé par Jacques Durand (ERSS, Université de Toulouse-Le Mirail), Bernard Laks (MoDyCo, Université de Paris X) et Chantal Lyche (Universités d’Oslo et de Tromsø). Plusieurs aspects de la phonologie du français bordelais sont abordés, en prenant en compte la diversité diastratique des locuteurs et les diff

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13

Sandeman, Lillian Ruth. "Causes of temporal variation in Atlantic cod (Gadus morhua) condition." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=167788.

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This thesis aims to investigate causes of variation in the condition of Atlantic cod using long-term, high-resolution liver-weight databases. The Liver Condition Index (LCI), the weight of the liver as a percentage of total body weight, is used as a measure of condition. The first study presented in this thesis is an analysis of the causes of inter- and intraannual variation in the condition of Northeast Arctic cod. Temperature is identified as an important factor influencing condition. Increasing temperature is shown to positively impact condition at both inter- and intraannual timescales.

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14

Talukdar, Partha. "Using germanium to characterise natural variation of silicon in rice." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230590.

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Rice is a staple food for more than half of the world's population, and is therefore one of the most important crops directly involved in global food security. Rice accumulates high concentrations of silicon (Si), up to 10% of its dry mass. Silicon has been shown to be involved in plant growth, high yield and mitigating biotic and abiotic stresses. Importantly, inorganic arsenic (As) is taken up by rice through Si transporters. The aims of this project were: 1) To identify natural variation for shoot silicon concentration in rice 2) To determine if germanium is a suitable analogue of silicon f

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15

Cole, Beth. "Morphosyntactic variation in Uist Gaelic : a case of language shift?" Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=226809.

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This thesis investigates variation and change in the initial and final mutation system of Scottish Gaelic in the wider context of language shift, language contact and sociolinguistic variation and change. Gaelic in Scotland has been subject to decreasing speaker numbers since the introduction of a language question on the Census in 1881. As of 2011, the proportion of Gaelic speakers in Scotland stood at 1.1%. In Uist where this study is based, however, Gaelic is not a minority language, with 60.5% of the population of the islands returning themselves as Gaelic speakers in 2011. The presentatio

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16

Villegas-Amtmann, Stella. "Seasonal variation in the physiological ecology of the Galapagos (Zalophus wollebaeki) and California (Zalophus californianus ) sea lions /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2009. http://uclibs.org/PID/11984.

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17

Brickhill, Daisy. "Small-scale spatial variation in demography of the European starling Sturnus vulgaris." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=201726.

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Quantifying the pattern and magnitude of spatio-temporal variation in demography, and identifying underlying causes, is key to understanding population dynamics. Using long-term, spatially-explicit data from a small population of European Starlings (Sturnus vulgaris) on Fair Isle, Scotland, I quantified spatio-temporal variation in demography and investigated its underlying mechanisms. I objectively described the population’s physical structure and hence defined spatial clusters of nest sites at multiple spatial scales. I quantified spatio-temporal variation in reproductive success and surviva

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18

Cheney, Barbara Jean. "Temporal variation in the demographics and dynamics of a bottlenose dolphin population." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=236113.

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Long-term individual-based studies can be central to collecting data on aspects of individual and population biology and ecology. Photo-identification often underpins longterm individual based studies, particularly for cetaceans. Bottlenose dolphins (Tursiops truncatus) are long-lived with low reproductive rates and complex social structures, while showing plasticity in their behaviour, biology and ecology. As such long-term individual based studies are key to investigating the complexities of their population dynamics. My aim for this thesis was to synthesise over two decades of photo-identif

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19

Davidson, Scott. "Investigating human polymorphism density and transcriptional regulation of the galanin gene." Thesis, University of Aberdeen, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=100111.

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The present study aimed to gain better insights into the distribution of genomic variation, in the form of single nucleotide polymorphisms, within the human genome. Using set theory, the average SNP density of the human genome was found to be 2.6 SNPs per kilobase. This figure decreased with increasing evolutionary depth, i.e. conservation. The conserved exonic, intronic subsets had a lower SNP density than the conserved intergenic subset, suggesting that the conserved exonic and intronic regions are under similar strengths of selective pressure while conserved intergenic regions are under

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20

Robertson, Julie. "Accommodative phonostylistic variation in conversational interaction." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=62162.

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21

Mierzwińska, Monika Ewa. "Natural variation in root morphology and adaptation to soil conditions in Arabidopsis thaliana." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230164.

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Intraspecific variation within the genetic model plant Arabidopsis thaliana has been used to research numerous potentially adaptive and economically important traits. In this thesis I used this tool to investigate root morphology and adaptation of plants to edaphic conditions. Firstly I tested local adaptation of chosen A. thaliana wild genotypes collected from north eastern Scotland, to two soil types with contrasting textures. When local adaptation is defined as fitness advantage (reproductive output) in local soil, I did not find clear signs of local adaptation. Additionally, I observed sig

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22

Le, Sciellour Hazon Mathilde. "Microbiote intestinal chez le porc, facteurs de variation et relations avecles performances des animaux." Thesis, Rennes, Agrocampus Ouest, 2019. http://www.theses.fr/2019NSARB323.

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L’amélioration de l’efficacité alimentaire (EA) est un enjeu important pour la filière porcine. L’EA est un phénotype complexe faisant intervenir un grand nombre de fonctions chez le porc. Au travers son rôle dans le métabolisme de son hôte et le maintien de sa santé, le microbiote intestinal est susceptible d’impacter les performances de l’hôte et en particulier son EA. Ce travail de thèse vise à étudier les modifications de composition du microbiote intestinal du porc soumis à différents facteurs environnementaux et à évaluer les relations entre cette composition microbienne et les performan

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23

Edens, Thaddeus James. "A new large total variation stability result for the quadratic nonlinear system associated with the compressible Euler equations by eigenvalue methods /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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24

Lee, Ji-Young. "Evolutionary developmental genetic studies on morphological variations : floral structures in Lepidium L. (Brassicaceae) and nectaries in eudicots /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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25

Sripa, Saksit. "Variation in drug utilisation and quality of prescribing across different health insurance schemes in Thailand." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=203535.

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Introduction: In 2001, the Universal Coverage (UC) policy was introduced in Thailand. This policy aimed to provide equal access to health care regardless of socioeconomic status. There are now three different health care schemes serving Thai people including the Civil Servant Medical Benefit Scheme (CSMBS), the Social Security Scheme (SSS), and the UC Scheme. Soon after the introduction of the UC there was evidence of health inequalities among beneficiaries of different schemes. The purpose of this thesis is to explore the utilisation patterns of drugs and quality of prescribing across the dif

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26

Durham, Debra L. "Variation in responses to forest disturbance and the risk of local extinction : a comparative study of wild Eulemurs at Ranomafana National Park, Madagascar /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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27

Grist, Hannah. "Patterns and consequences of variation in winter location in a partially migratory population of European shags." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225313.

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28

Sears, Anna Louise Warwick. "Quantifying the effects of spatial environmental variation on dynamics of natural plant populations : field tests for covariance between response to the environment and competition /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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29

Munasinghe, Mayuri Swarnamalee. "Local landraces of rice from Sri Lanka : variation in the genome and traits related to drought resistance." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=210033.

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A set of 135 rice landraces from different geo-climatic regions of Sri Lanka were tested for their rooting characteristics with high throughput physiological screening methods. In the preliminary screening, nearly half of the variation in toxicity symptoms observed in all 135 landraces due to herbicide layer (TRIK, 100 mg / plant) buried at 30cm depth was explained by landrace. Deep rooted and shallow rooted landraces were distinguished by herbicide score. Selected 36 landraces with diverse herbicide scores were tested in hydroponics for 5 weeks for root traits. Root length and root thickness

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30

Thompson, Philip Jean-Paul. "The spatial and temporal variation of stratigraphic components within the San Fernando Channel System, Baja California, Mexico." Thesis, University of Aberdeen, 2010. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=158496.

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The San Fernando Channel System is a superbly exposed submarine channel system of late Cretaceous age located on the Pacific coast of Baja California, Mexico. High-resolution mapping and extensive system-wide correlation panels coupled with detailed sedimentology studies and interpretation of high-resolution photomosaics have shown that the system comprises a distinct hierarchy of stratigraphy components. Extensive outcrops have allowed a detailed submarine channel model to be proposed which describes architecture and facies spanning outcrop to seismic scales. Channel complex sets are the la

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31

Gratton, Laurène-Kirstie. "Les clauses de variation du contrat de travail." Paris 1, 2009. http://buadistant.univ-angers.fr/login?url=https://www.dalloz-bibliotheque.fr/pvurl.php?r=http%3A%2F%2Fdallozbndpro-pvgpsla.dalloz-bibliotheque.fr%2Ffr%2Fpvpage2.asp%3Fpuc%3D5442%26nu%3D93.

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Les clauses de variation du contrat de travail sont couramment définies comme les clauses par lesquelles le salarié consent par avance à la modification d'un élément de son contrat. En dépit de la déclaration de nullité de toute clause de révision unilatérale du contrat de travail, prononcée par la Chambre sociale de la Cour de cassation sur le fondement de l'article 1134, alinéa 2, du Code civil, certaines clauses de variation sont soumises à des conditions de validité élaborées par le juge. Le dépassement de cette contradiction s'appuie, tout d'abord, sur la reconnaissance de l'existence d'u

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Mena, Dolores DeHaro. "Beyond deficit views of low-income Mexican-descent families : exploring variation in Mexican-descent high school students' and parents' aspirations and expectations, educational involvement practices, and college knowledge /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2005. http://uclibs.org/PID/11984.

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33

Miller, Roger Steven. "Ultraviolet extinction in boundary layer aerosols : chromatic variations in size and time resolved particulate matter collected on Teflon filters and greased Mylar strips /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2002. http://uclibs.org/PID/11984.

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34

Dimkpa, Stanley Obumneke Nyebuhi. "Genome wide association mapping and assessment of allelic variation in strigolactone synthesis genes involved in rice plant parasite interactions." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=220456.

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35

Donnan, Gemma Louise Jean. "An investigation of cultural variations in emotion experience, regulation and expression in two Scottish settings." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=234053.

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Individuals from Aberdeen/Aberdeenshire and Glasgow/Greater Glasgow have anecdotally been thought to differ in their expression of emotion with the former group being thought to be less emotionally expressive that the latter. The current thesis carried out three studies to empirically examine this. A systematic review of measures of emotion experience, regulation, expression and alexithymia was carried out to establish their psychometric properties. The results of the review lead to recommendations for which scales to use within future studies of the thesis. The second study used measures of e

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36

Ferreira, de Sousa Marcus Alexandre. "Contribution à la conception de lois de commande à caractère robuste pour une machine synchrone entraînant une charge élastique à inertie variable." Phd thesis, Toulouse, INPT, 2007. http://oatao.univ-toulouse.fr/7601/1/ferreira.pdf.

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Le but de ce travail est de définir les règles de synthèse de différentes lois de commande afin de leur donner un caractère robuste. Nous étudions la problématique du contrôle d'un actionneur synchrone en présence d'une charge mécanique. Cette charge est entraînée par un accouplement élastique et présente une valeur d'inertie variable et bornée. La synthèse de correcteurs simples est présentée et des méthodes pour obtenir le meilleur correcteur sur l'intervalle de variation des paramètres sont presentées. Nous avons présenté dans ce travail, les règles de synthèse d'un régulateur PID sur leque

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37

Jibo, Abdullahi Umar. "Variation in drought tolerance and morphological plasticity among two provenances of Acacia senegal (Senegalia senegal) seedling in North Eastern Nigeria." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227119.

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38

Engelking, Susann. "Effekte einer Kalium-abhängigen Variation in der Kationen-Anionen-Bilanz des Futters auf die Elektrolyt- und Stickstoffbilanz bei Schweinen." Doctoral thesis, Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-214494.

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Einleitung: Die Kationen-Anionen Bilanz (DCAB) des Futters modifiziert den Säure-Basen Status von Tieren und findet Anwendung in der Prävention von Milchfieber bei Kühen, MMA bei Sauen und Urolithiasis bei Haustieren. Durch die Veränderung des Kationen-Anionen-Verhältnisses in Futterrationen können biologische Prozesse beeinflusst werden, der Stickstoffmetabolismus. Ziel der Untersuchung: Die vorliegende Studie befasst sich mit der Frage, ob eine kaliumbedingte Variation der DCAB des Futters für wachsende Schweine einen Einfluss auf bestimmte Parameter des Säure-Basen-Haushaltes und möglicherw

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39

Cowie, Philip David. "Analysis of the effects of disease-associated variation within a cis-regulatory element of the CNR1 locus on CNR1 promoter dynamics." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=225652.

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Genetic variation within the cannabinoid 1 receptor (CB1R) locus (CNR1) has been repeatedly associated with drug addiction pathologies. Genomic annotation of CNR1 indicates the vast majority of this genetic variation likely results in altered transcriptional regulation of the CNR1 gene as a mechanistic link to the disease phenotype. There is a lack of information describing the regulation of CNR1 transcription and the potential impact of disease-associated variation within the CNR1 locus on its transcriptional regulation. This study investigates the impact of an evolutionary conserved regulato

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Kourtopoulos, Angeliki. "Perceived Educational Control (PEC) associated with Age, Parental Educational Attainment (PEA), School Type and Sex : A cross-sectional study including predictions and variations." Thesis, Högskolan i Gävle, Avdelningen för socialt arbete och psykologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-23666.

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The current study mapped trajectories of perceived educational control (PEC) through its association with age, parental educational attainment (PEA), school type (public or private) and sex. The study surveyed 280 Australian formal students, in a cross-sectional design, between the ages of 17 and 25. Results displayed increased age predicting higher levels of PEC. Having one educated parent predicted greater PEC across age than did having no educated parents. Interestingly, having two educated parents did not significantly elevate PEC. Awaited, was the insignificance of sex in the predictions

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Tayong, Boumda Rostand. "Propriétés acoustiques de systèmes incorporant des plaques micro-perforées et des matériaux absorbants sous forts niveaux d'excitation." Thesis, Dijon, 2010. http://www.theses.fr/2010DIJOS066/document.

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Ce travail de thèse a pour objectif l'étude des propriétés acoustiques de systèmes incorporant des plaques micro-perforées (MPP) et des matériaux absorbants sous forts niveaux d'excitation.Le premier chapitre traite des systèmes composés d'une MPP couplée à une cavité d'air et une paroi rigide. Un modèle analytique intégrant deux paramètres adimensionnels et un nombre de Mach optimal est présenté. La particularité de ce modèle est de décrire la variation du maximum du coefficient d'absorption (coefficient d'absorption à la résonance) avec l'augmentation du niveau d'excitation. Une formule prop

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Lima, Luciana Lopes Ferreira de. "Biologia populacional comparada de duas esp?cies de heliconius (Lepidoptera: Nymphalidae) em um ambiente sazonal de floresta atl?ntica do nordeste brasileiro." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14014.

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Made available in DSpace on 2014-12-17T14:33:03Z (GMT). No. of bitstreams: 1 LucianaLFL.pdf: 2263314 bytes, checksum: 031f7f356fbeb6a00725098fb2fbe8c6 (MD5) Previous issue date: 2009-08-28<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>Tropical environments often face strong seasonal variations in climate, such as alternate periods of dry and rain, that may often be important influence in the annual X the organisms lives. Here we assess how population dynamics of two butterfly species (Heliconius erato and Heliconius mepomene) respond to environmental and seasonal variati

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Mostajir, Behzad. "Etude des pico- et nano-detritus dans un ecosysteme pelagique (mer ligure, mediterranee nord-occidentale) : variations saisonnieres, contribution aux cycles biogeochimiques et role au sein du reseau trophique microbien." Paris 6, 1996. http://www.theses.fr/1996PA066635.

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Le role des pico- et nano-detritus au sein du reseau trophique microbien a ete etudie dans l'ecosysteme pelagique de la mer ligure (mediterranee nord-occidentale). Les recherches entreprises dans ce travail s'articulent autour de quatre axes principaux : 1) mise au point d'une methode d'identification et de quantification des pico- et nano-detritus ; 2) determination des variations saisonnieres des pico- et nano-detritus dans la colonne d'eau ; 3) evaluation de la contribution des pico- et nano-detritus aux cycles biogeochimiques ; 4) etudes experimentales sur la production potentielle de pico

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Baraket, Sami. "Quelques résultats sur des équations aux dérivées partielles non linéaires provenant de problèmes géométriques." Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0012.

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Dans ce travail on s'intéresse à des solutions de problèmes variationnels intervenant en géométrie ou en physique, minimisantes ou non. Nous avons étudié plus particulièrement les applications harmoniques entre variétés riemanniennes et les solutions du système de Ginzburg-Landau. Nous donnons plusieurs résultats d'analyse asymptotique de ces solutions lorsque l'on fait varier certains paramètres significatifs. Des problèmes analogues aux applications harmoniques provenant de la physique, telle l'équation de Landau-Lifschitz ont été résolus

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Thuret-Benoist, Hélène. "Effet des variations climatiques sur la production de Matière Organique Algale et Microcystines par le phytoplancton dans les systèmes eutrophes. Etude de leur élimination dans le procédé de traitement des eaux." Thesis, Limoges, 2019. http://www.theses.fr/2019LIMO0093.

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Les phénomènes d’eutrophisation caractérisés par la prolifération de phytoplancton sont à l’origine d‘impacts négatifs sur les écosystèmes aquatiques et les usages de la ressource en eau. Lors de son développement, le phytoplancton génère de la Matière Organique Algale (MOA) qui augmente la concentration et modifie les caractéristiques et la réactivité de la Matière Organique Naturelle (MON) du plan d’eau. Des cyanotoxines peuvent également être générées si des cyanobactéries productrices sont présentes. Le climat futur, prévu par les experts, vient soutenir ces proliférations et en aggraver l

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Brown, Eleanor Clare. "Changes in vegetation composition and rates of erosion on Trotternish Ridge, Isle of Skye, in response to climatic variation and anthropogenic disturbance during the mid- to late- Holocene." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25969.

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‎Lopes, Neves de Almeida‎ Luis Manuel. "Quelques problèmes liés aux modèles de Ginzburg-Landau." Cachan, Ecole normale supérieure, 1996. http://www.theses.fr/1996DENS0005.

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La plupart des résultats présentés dans cette thèse sont liés à la théorie des fonctionnelles de Ginzburg-Landau. Ces modèles apparaissent dans des nombreux problèmes de physique à basse température. La première partie concerne le problème de régularité des applications harmoniques généralisées à valeurs dans des espaces homogènes. Cette étude nous a conduits à étendre des résultats antérieurs de Coiffman, Lions, Meyer et Semmes, sur les phénomènes de compensation dans les jacobiens, au cas des espaces de Lorentz. Dans la deuxième partie nous interprétons l'existence de courants permanents dan

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GENGE, CHRISTINE E. "SCALING OF METABOLIC ENZYMES: TRANSCRIPTIONAL BASIS OF INTERSPECIES VARIATION IN MITOCHONDRIAL CONTENT." Thesis, 2010. http://hdl.handle.net/1974/5710.

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Mitochondrial content, an important determinant of muscle metabolic capacity, changes in individuals during development, and in response to physiological and environmental challenges. This phenotypic plasticity is attributed to the coactivator PPARγ coactivator-1α (PGC-1α) but it remains unclear if this transcriptional regulator accounts for evolutionary variation in mitochondrial content. In an attempt to explain why some species have higher muscle mitochondrial enzyme levels than other species, I examined if the transcriptional mechanisms that control mitochondrial content of a tissue in an

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Sabbagh, Eman I. "Weekly variation of viruses and heterotrophic nanoflagellates and their potential impact on bacterioplankton in a Red Sea shallow ecosystem." Thesis, 2018. http://hdl.handle.net/10754/629129.

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Heterotrophic bacterioplankton plays a pivotal role in marine food webs and biogeochemical cycling. However, their temporal dynamics and underlying factors are still poorly understood in many regions, including the tropical waters of the Red Sea. The main goal of the MS project was to describe the seasonality and assess the impact of top-down controls (viruses and heterotrophic nanoflagellates) in parallel to bottom-up controls (substrate availability) on coastal bacterioplankton on a weekly basis. To that end, we monitored the abundance of the different planktonic groups by flow cytometry tog

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王偉翔. "Development of a Digital PFC Control Scheme with High Efficiency and Power Factor over Wide Load Variation Range." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/8s3j69.

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碩士<br>國立交通大學<br>電控工程研究所<br>101<br>To maintain high efficiency and power factor over wide load variation range is very difficult by a boost PFC converter using conventional analog control. This thesis proposes a multi-mode control method using repetitive and adaptive control techniques to improve light load efficiency and power factor. A new current sensing scheme is developed to detect the average current under fixed, variable switching frequency operation or in discontinuous mode without current sampling correction or oversampling method. An adaptive switching frequency control technique is d

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