22 research outputs found
Electrodéposition de nanostructures d'oxyde de zinc pour des applications photovoltaïques
No full textPARIS-BIUSJ-Biologie recherche (751052107) / SudocSudocFranceF
Thematic and citation structure dynamics of Food & Farming research
No full textThis paper analyses the Organic Food & Farming (OF&F) scientific domain dynamic throught a "progressive document co-citation analysis" based on peer-reviewed papers from Web of Science. The dataset of OF&F domain displayed an exponential growth and a thematic diversification pattern. Both dominant and marginal clusters in association with their main cited articles were identified. This study enables to pinpoint major themes addressed or emerging. It can feed further research work and projects, namely with the definition of information system and research policy
« Écriture » alternative dans une thèse de doctorat. Essai sur l’utilisation de la bande dessinée à l’université
No full textInternational audienceAfter realizing the hegemonic nature of writing as a modality for validating the knowledge and skills, the author questions the possibilities of an alternative writing as part of her academic work and more specifically of her thesis. This article describes her personal journey and the reasons that led her choosing, among several options, comics. It is also an opportunity to experiment with comics not only as a modality of scientific writing, but also as a methodological tool in its own right.Après une prise de conscience du caractère hégémonique de l’écrit comme modalité de validation des connaissances et compétences, l’autrice interroge les possibilités d’une écriture alternative dans le cadre de ses travaux universitaires, et plus précisément de sa thèse. Cet article décrit son cheminement personnel et les raisons qui l’ont amenée à choisir, parmi plusieurs options, la bande dessinée. Il est aussi une occasion d’expérimenter la bande dessinée non seulement en tant que modalité d’écriture scientifique, mais aussi en tant qu’outil méthodologique à part entière
Regards croisés sur la violence : actes du premier Colloque Annuel du Département d’Anthropologie de l’Université de Montréal, 26-27 mars 2018
No full textIntroduction / Thomas Lecomte et Gabrielle Tanguay ; Le devenir-jihadiste des occidentaux à l’ère d’internet : événements, affects et sens / Maria Mourani ; Regards anthropologiques sur la victimisation des femmes musulmanes / Auréliane Belliard ; Réflexion sur la décolonisation de la santé mentale : questionnements concernant la violence épistémique / Edgar Blanchet ; La gardienne de la langue tehuelche (la dernière locutrice du aonekko ‘a’ien) / Javier Domingo ; La violence subie par les adolescentes enceintes à Haïti / David Jean Simon ; Les territoires de la violence à Port-au-Prince : entre criminalité et inégalités socio-spatiales / Olivier Djems ; La démocratie démophobe, violence sociale et cooptation au Guatemala / Léa Vignalou ; Trois dimensions de la violence coloniale dans l’expérience des Coréens au Japon / Xavier Robillard-Martel ; Le paradoxe de la violence : de l’atout du soldat à la détresse du traumatisé / Servane Roupnel ; Le territoire comme victime, la violence au-delà de l’humain au sein des communautés autochtones et noires en Colombie / Daniel Ruiz-Serna ; Une économie politique de la violence, du sauvage et des catégories animales : la tauromachie, de la corrida espagnole au rodéo américain / Frédéric Saumade ; Bricolage de l’obscène : le discours de haine au temps de Trump / Luke Fleming et Thomas Lecomt
Design of a hierarchical structure of ZnO by electrochemistry for ZnO-based dye-sensitized solar cells
No full text
Discharging Microcavities and Electric Field Enhancement inside Cavities in HVDC XLPE Cables
No full textInternational audienc
Protection induced in pigs previously infected by the non-virulent strain 1330 of Streptococcus suis serotype 2 is not due to the secretion of the bacteriocin suicin.
No full textStreptococcus suis is a systemic pathogen of swine and imposes a significant economic burden on the swine industry. Disease with S. suis is controlled with antibiotic treatment and vaccination with inactivated vaccines, which can be derived from the strains circulating on the farm. Inactivated vaccines have shown mixed results with minimal data supporting reductions in morbidity and mortality following their use. With increasing restrictions on antibiotic use and increasing concerns surrounding antimicrobial resistance, alternatives to antibiotics or novel, highly effective vaccines are needed for treating or preventing disease with S. suis. Bacteriocins are a potential alternative to antibiotics, as bacteriocins are antimicrobial peptides produced by bacteria. However, the use of bacteriocins to limit pathogenic S. suis remains relatively under-examined. Live vaccines are a potential novel and effective method of preventing disease, as they provide competition for pathogenic strains and would limit pathogenic strain colonization while stimulating a protective immune response. This study investigated the use of an avirulent, bacteriocin producing isolate of S. suis (90-1330) as an intranasal vaccine and evaluated the role of the bacteriocin by comparing protection to animals inoculated with a mutant lacking bacteriocin production (90-1330Δsuicin). Animals were protected from systemic disease when challenged with a virulent isolate 21 days after inoculation with either 90-1330 or 90-1330Δsuicin but were not protected when challenged 3 days after inoculation. Evaluation of antibody titers showed increased titers 21 days post-inoculation, and the humoral response was likely providing systemic protection. Although 90-1330 was unable to protect animals challenged 3 days post-inoculation, the strain should be considered a good candidate for vaccine development. S. suis 90-1330 was able to induce a protective immune response with a single intranasal inoculation and bacteriocin production may be able to contribute to protection when animals have a lower exposure dose, as in a production setting
Increased grass cover height in the alleys of apple orchards does not promote Cydia pomonella biocontrol
No full textInternational audienceHabitat management such as ground cover implementation in orchards is considered a promising approach to augment natural enemy abundance and diversity. However, the actual effects of grass cover management and specifically mowing frequency, on the abundance of tree natural enemies and thus on the biocontrol of major pests, are still largely unknown. We compared the effect of three heights, tall (no cutting), medium (mean height of 20 cm) and short (mean height of 5 cm), of a spontaneous grass cover in an experimental orchard on natural enemy abundance and predation rates from April to August. Early in the season (from April to May) grass cover height had no effect on codling moth egg predation. However later in the season (July and August) the predation rate increased more in the short grass cover than in the tall grass (66 vs. 38 %. respectively). The abundance of the earwig Forficula pubescens (Gen,) (Dermaptera: Forficulidae) was significantly positively correlated with egg predation in the plots with short grass but negatively correlated in the tall and medium plots suggesting that these predators could find an alternative resource in the taller grass cover
Partial Discharges for Diagnosis of Cavity Growth in HVDC XLPE Model Cables
No full textInternational audienceThis paper presents results carried out on polymeric high voltage direct current (HVDC) model cable. Two aspects are considered: partial discharges (PD) and current measurements, with the aim of investigating possible growth of voids of micrometer size. PD can occur within defects already existing inside crosslinked polyethylene (XLPE) matrix under various conditions. These conditions are well known under alternative current (AC) but not so well under DC with harmonics. Currents are at the origin of charges accumulation at XLPE/void interfaces, which may in turn be responsible for local field enhancement, discharges and possibly into void growth. Model cables have been subjected to (70°C) only or to HVDC field with harmonics under 60 kV/mm DC and 8 kV/mm 1800 Hz AC at nominal temperature (70°C). PD measurements on unaged model cable suggest the existence of cavities whose diameters can be estimated around 10 μm. Current densities are compared between thermal and electro-thermal ageing, effect of ageing will be highlighted
