113 research outputs found
Intégration au marché du stockage énergétique résidentiel aprÚs le compteur
RĂSUMĂ : Une nouvelle opportunitĂ© dâaffaires fait prĂ©sentement son apparition grĂące Ă trois tendances
clĂ©s sur le marchĂ© : (1) la croissance accĂ©lĂ©rĂ©e du nombre dâinstallation de panneaux solaires dans le marchĂ© rĂ©sidentiel ; (2) la baisse rapide du coĂ»t des batteries ; et (3) lâĂ©mergence des prosommateurs. Ce mĂ©moire propose un modĂšle dâaffaires innovant pour exploiter le potentiel
dâagrĂ©gation du stockage dâĂ©nergie rĂ©sidentiel derriĂšre le compteur. Ă haut niveau, lâagrĂ©gateur offre une compensation financiĂšre aux propriĂ©taires de systĂšmes de stockage rĂ©sidentiels afin dâutiliser leurs batteries pour fournir des services au rĂ©seau dâĂ©lectricitĂ©. Un modĂšle dâoptimisation a Ă©tĂ© Ă©laborĂ© pour Ă©valuer le potentiel de ce modĂšle dâaffaires et dĂ©terminer les modalitĂ©s de compensation optimales pour les participants. Cette Ă©tude confirme quâun tel modĂšle dâaffaires pourrait sâavĂ©rer lucratif pour les distributeurs dâĂ©lectricitĂ© agissant Ă titre dâagrĂ©gateur. Le principal facteur influençant le choix des modalitĂ©s de compensation pour les participants est lâincitatif offert pour lâutilisation de la batterie en fonction des besoins de lâagrĂ©gateur. Cet incitatif est quantifiĂ© selon un pourcentage du prix de revente de lâĂ©lectricitĂ© utilisĂ©e pour lâarbitrage. Selon les donnĂ©es pour le Rhode Island, les participants pourraient
Ă©conomiser en moyenne 100 par participant. Ătant donnĂ© le nombre croissant de clients possĂ©dant des systĂšmes de stockage, ces gains pourraient
reprĂ©senter dans le futur une source de revenus importante pour lâentreprise. Nos rĂ©sultats confirment Ă©galement la rentabilitĂ© du modĂšle tout au long de lâannĂ©e, permettant ainsi de rapporter des revenus constants dans le temps. De plus, ces profits pourraient ĂȘtre accrus par lâoffre de services additionnels, tels que pour des services auxiliaires, qui ne sont pas actuellement comptabilisĂ©s dans lâĂ©tude rĂ©alisĂ©e. Des bĂ©nĂ©fices supplĂ©mentaires pourraient
Ă©galement provenir de la flexibilitĂ© offerte par la distribution de la capacitĂ© de stockage sur le rĂ©seau, notamment par la rĂ©duction de la congestion et le report dâinvestissements dans les actifs de transport et distribution dâĂ©lectricitĂ©. Le tout serait possible sans investissements en capitaux dans des solutions de stockage dâĂ©nergie Ă lâĂ©chelle du rĂ©seau.---------ABSTRACT : A new business opportunity is emerging with the combination of three key market trends: (1)Increased penetration of residential solar PV; (2) Rapid reduction of battery costs; and (3) Emergence of prosumers. This thesis proposes an innovative business model to harness the potential of aggregating behind-the-meter residential storage. In its simplest form, the aggregator compensates residential storage system owners for using their battery on an on-demand basis. An optimization model was developed to evaluate the potential of this proposed business
model and determine the ideal compensation scheme for the participants. This study confirms there is a business case for utilities to implement such a business model. The main
driver for the definition of the appropriate incentive is the compensation for usage which is based on a percentage of the resell price of the electricity used for arbitrage. Based on the Rhode Island data, participants could save on average 100 per participant. Given the growing number of customers with storage systems, these earnings could represent an important source of revenue for the utility. Our results also confirm the year-round profitability of the model, that could bring regular income for the utility. Moreover, additional profits could come from providing ancillary services, although these have not been quantified in this study. The utilities would also benefit from the flexibility provided by these distributed storage units, to address congestion problems and defer upgrades. All this would be possible without capital investment in grid-scale storage
Norme et liminalité dans Sphinx et Ciels liquides d'Anne Garréta
Ce mĂ©moire analyse les stratĂ©gies d'Ă©criture qu'a employĂ©es Anne GarrĂ©ta dans les romans Sphinx et Ciels liquides, ainsi que leur effet sur les personnages. Plus prĂ©cisĂ©ment, il montre comment l'auteure s'est servie des normes littĂ©raires et narratives pour crĂ©er des personnages dont l'identitĂ© est liminale, c'est-Ă -dire en mouvement. S'inscrivant dans une perspective fĂ©ministe, l'analyse interroge Ă la fois les normes identitaires sexuĂ©es et celles qui servent Ă dĂ©finir le concept mĂȘme d'identitĂ©. En dĂ©finitive, elle dĂ©montre comment une dĂ©construction du sujet permet d'Ă©largir le champ des possibles identitaires. Le premier chapitre est consacrĂ© Ă l'Ă©laboration des concepts et notions qui seront ensuite utiles Ă l'analyse. D'abord, la notion de norme au sens large est expliquĂ©e, suivant les rĂ©flexions de Judith Butler sur le genre. Elle sert ensuite de base pour aborder plus prĂ©cisĂ©ment la norme linguistique et la norme narrative. Ensuite, le concept anthropologique de liminalitĂ© est circonscrit et, une fois dĂ©gagĂ© de son contexte d'origine, mis en relation avec deux figures liminales : le transgenre et le spectre. Le second chapitre s'intĂ©resse au jeu de GarrĂ©ta avec la norme linguistique, particuliĂšrement en ce qui concerne l'Ă©vitement de la marque de genre grammaticale et l'utilisation des stĂ©rĂ©otypes sexuĂ©s. Il analyse Ă©galement la place du masculin Ă valeur neutre et/ou universelle dans les romans de l'auteure. Tout au long du chapitre, l'analyse dĂ©montre comment l'Ă©criture rĂ©ussit Ă crĂ©er des personnages transgenres, lesquels permettent Ă la fois de rĂ©vĂ©ler et de dĂ©passer la norme du genre. Le troisiĂšme chapitre est dĂ©diĂ© Ă l'Ă©tude de la structure narrative des deux romans, plus spĂ©cifiquement des dimensions du temps et de l'espace. Il montre comment, d'une part, le dĂ©placement et la multiplication des repĂšres temporels et, d'autre part, le choix de lieux liminaux sert Ă crĂ©er des personnages dont l'identitĂ© reste indĂ©finie. Ces derniers permettent en outre de questionner le concept d'identitĂ© pour le penser de maniĂšre inclusive. \ud
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MOTS-CLĂS DE LâAUTEUR : norme, liminalitĂ©, Anne GarrĂ©ta, Sphinx, Ciels liquides, transgenre, spectre, identitĂ©, genre, linguistique, narrative
Not Competent but Warm... Really? Compensatory Stereotypes in the French-speaking World
Two studies examined the compensation hypothesis that members of both high- and low-status groups associate high-status groups with high levels of competence and low levels of warmth on the one hand, and low-status groups with low levels of competence and high levels of warmth, on the other. Building upon existing linguistic relations between the French and the Belgians, Study 1 had standard, i.e. French, and non-standard, i.e. Belgian, speakers rate the linguistic skills, competence, and warmth of both groups and report their meta-stereotypes. As predicted, both groups of participants saw the French as more skilled linguistically than Belgians and evaluated standard speakers as more competent than warm and non-standard speakers as more warm than competent. This pattern also emerged in respondentsâ meta-stereotypes. Study 2 revealed that compensation was less marked among a third group of Francophone speakers, i.e. Swiss, even if the latter respondents seemed well aware of the pattern guiding Belgian and French representations of each other. We discuss the implications of the findings in terms of motivated intergroup stereotypes
Neuroligin-1 Is Altered in the Hippocampus of Alzheimer\u27s Disease Patients and Mouse Models, and Modulates the Toxicity of Amyloid-Beta Oligomers
Synapse loss occurs early and correlates with cognitive decline in Alzheimerâs disease (AD). Synaptotoxicity is driven, at least in part, by amyloid-beta oligomers (AÎČo), but the exact synaptic components targeted by AÎČo remain to be identified. We here tested the hypotheses that the post-synaptic protein Neuroligin-1 (NLGN1) is affected early in the process of neurodegeneration in the hippocampus, and specifically by AÎČo, and that it can modulate AÎČo toxicity. We found that hippocampal NLGN1 was decreased in patients with AD in comparison to patients with mild cognitive impairment and control subjects. Female 3xTg-AD mice also showed a decreased NLGN1 level in the hippocampus at an early age (i.e., 4 months). We observed that chronic hippocampal AÎČo injections initially increased the expression of one specific Nlgn1 transcript, which was followed by a clear decrease. Lastly, the absence of NLGN1 decreased neuronal counts in the dentate gyrus, which was not the case in wild-type animals, and worsens impairment in spatial learning following chronic hippocampal AÎČo injections. Our findings support that NLGN1 is impacted early during neurodegenerative processes, and that AÎČo contributes to this effect. Moreover, our results suggest that the presence of NLGN1 favors the cognitive prognosis during AÎČo-driven neurodegeneration
First reported outbreak of Duck atadenovirus A tracheobronchitis in 3-week-old ducklings in Québec including whole genome sequence of the virus
First report of Ureaplasma diversum, a bovine pathogen, in the respiratory tract of swine in Canada
Quebec : avian pathogens identification and genomic characterization : 2021 annual review of the Molecular Diagnostic Laboratory, Université de Montréal
Detection of genes involved in bud phenology in sessile oak (Quercus petraea Matt. Liebl) combining digital expression analysis and Q-PCR
Bioinformatic analysis of ESTs collected by Sanger and pyrosequencing methods for a keystone forest tree species: oak
<p>Abstract</p> <p>Background</p> <p>The Fagaceae family comprises about 1,000 woody species worldwide. About half belong to the <it>Quercus </it>family. These oaks are often a source of raw material for biomass wood and fiber. Pedunculate and sessile oaks, are among the most important deciduous forest tree species in Europe. Despite their ecological and economical importance, very few genomic resources have yet been generated for these species. Here, we describe the development of an EST catalogue that will support ecosystem genomics studies, where geneticists, ecophysiologists, molecular biologists and ecologists join their efforts for understanding, monitoring and predicting functional genetic diversity.</p> <p>Results</p> <p>We generated 145,827 sequence reads from 20 cDNA libraries using the Sanger method. Unexploitable chromatograms and quality checking lead us to eliminate 19,941 sequences. Finally a total of 125,925 ESTs were retained from 111,361 cDNA clones. Pyrosequencing was also conducted for 14 libraries, generating 1,948,579 reads, from which 370,566 sequences (19.0%) were eliminated, resulting in 1,578,192 sequences. Following clustering and assembly using TGICL pipeline, 1,704,117 EST sequences collapsed into 69,154 tentative contigs and 153,517 singletons, providing 222,671 non-redundant sequences (including alternative transcripts). We also assembled the sequences using MIRA and PartiGene software and compared the three unigene sets. Gene ontology annotation was then assigned to 29,303 unigene elements. Blast search against the SWISS-PROT database revealed putative homologs for 32,810 (14.7%) unigene elements, but more extensive search with Pfam, Refseq_protein, Refseq_RNA and eight gene indices revealed homology for 67.4% of them. The EST catalogue was examined for putative homologs of candidate genes involved in bud phenology, cuticle formation, phenylpropanoids biosynthesis and cell wall formation. Our results suggest a good coverage of genes involved in these traits. Comparative orthologous sequences (COS) with other plant gene models were identified and allow to unravel the oak paleo-history. Simple sequence repeats (SSRs) and single nucleotide polymorphisms (SNPs) were searched, resulting in 52,834 SSRs and 36,411 SNPs. All of these are available through the Oak Contig Browser <url>http://genotoul-contigbrowser.toulouse.inra.fr:9092/Quercus_robur/index.html</url>.</p> <p>Conclusions</p> <p>This genomic resource provides a unique tool to discover genes of interest, study the oak transcriptome, and develop new markers to investigate functional diversity in natural populations.</p
Free exopolysaccharide from Mycoplasma mycoides subsp. mycoides possesses anti-inflammatory properties
In this study we explored the immunomodulatory properties of highly purified free galactan, the soluble exopolysaccharide secreted by Mycoplasma mycoides subsp. mycoides (Mmm). Galactan was shown to bind to TLR2 but not TLR4 using HEK293 reporter cells and to induce the production of the anti-inflammatory cytokine IL-10 in bovine macrophages, whereas low IL-12p40 and no TNF-α, both pro-inflammatory cytokines, were induced in these cells. In addition, pre-treatment of macrophages with galactan substantially reduced lipopolysaccharide (LPS)-induced production of pro-inflammatory cytokines TNF- and IL-12p40 while increasing LPS-induced secretion of immunosuppressive IL-10. Also, galactan did not activate naïve lymphocytes and induced only low production of the Th1 cytokine IFN-γ in Mmm-experienced lymphocytes. Finally, galactan triggered weak recall proliferation of CD4+ T lymphocytes from contagious bovine pleuropneumonia-infected animals despite having a positive effect on the expression of co-stimulatory molecules on macrophages. All together, these results suggest that galactan possesses anti-inflammatory properties and potentially provides Mmm with a mechanism to evade host innate and adaptive cell-mediated immune responses. (Résumé d'auteur
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