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Touchard, Axel; Dejean, Alain; Koh, Jennifer; Nicholson, Graham; Escoubas, Pierre; Orivel, Jerome |
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Title |
Unraveling the unexplored biochemical complexity of ant venoms |
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Conference Article |
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2014 |
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Proceedings of the 17th Congress of the International Union for the Study of Social Insects (IUSSI) |
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36 |
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OR241 |
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122 |
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17th Congress of the International Union for the Study of Social Insects (IUSSI), Cairns, Australia, 13 - 18 July 2014. |
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EcoFoG @ webmaster @ |
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236 |
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Touré, Seindé ; Falkowski, Michaël ; Dusfour, Isabelle ; Jahn-Oyac, Arnaud ; Odonne, Guillaume ; Stien, Didier ; Houël, Emeline ; Eparvier, Véronique |
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Title |
Ae aegypti larvicidal sesquiterpene alkaloids from Maytenus oblongata Reissek (Celastraceae) |
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Journal Article |
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Year |
2016 |
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Planta Medica |
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81 |
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S01 |
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S1-S381 |
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Maytenus oblongata ; Aedes aegypti ; larvicidal ; sesquiterpenes alkaloids |
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Vector-borne diseases account for 17% of the estimated global burden of all infectious diseases [1]. For most of these, vector control remains the sole method to circumvent transmission and eventually epidemics in the absence of vaccine and/or specific arbovirose treatments. Furthermore, the efficacy of existing insecticides is decreasing due to the development of resistances [2, 3]. The situation urges to find novel insecticide or alternative method for controlling mosquito vectors. Taking into account these elements, in a constantly evolving epidemiological and regulatory context, the need to discover alternative, environmentally friendly, and safer biopesticides appears as crucial. Plants are a source of inspiration for new insecticides discovery as coevolution with phytophagous insects promoted the occurrence of a unique chemical diversity devoted to herbivory resistance at least in part [4, 5]. The insecticidal activity of 160 extracts from 87 species collected in French Guiana were evaluated on Ae. aegypti mosquitoes larvae. It was discovered that Maytenus oblongata Reissek (Celastraceae) stem ethyl acetate extract exhibited promising insecticidal properties, i.e., larvicidal and adulticidal activity against Ae. aegypti under laboratory conditions, without ecotoxicity (essay on Chironomus riparius and Daphnia magna) or cytotoxicity (Test on Ae. albopictus C6/36 cells and two human cell lines: KB and MCR5). Four β-dihydroagrofurane sesquiterpene alkaloids (1-4) and one steroid (5) were isolated from this extract. Compounds 2 (1-benzoyl,4-deoxy-alatamine) and 3 (1,2-dibenzoyl,4-deoxy-alatamine) showed LD50 of 7.75 µg/ml (95% confidence interval: 6.46 – 10.00 µg/ml) and 2.38 µg/ml (95% CI: 1.91 – 2.87 µg/ml), respectively, against Ae. aegypti larvae.
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Thieme |
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Germany |
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Anglais |
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EcoFoG @ carole.legrand @ |
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271 |
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Traissac, S. |
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Dynamique spatiale de Vouacapoua americana (Aublet), arbre de forêt tropicale humide à répartition agrégée. |
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2003 |
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207 |
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Foret Tropicale Humide; Dynamique Des Populations; Structure Spatiale; Analyse Spatiale; Besoin De Lumiere; Ombre; Dissemination Des Graines; Rongeurs; Bois D'Oeuvre; Amerique Du Sud; Guyane Francaise; Vouacapoua Americana; Ripley |
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Ph.D. thesis |
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Université Claude Bernard - Lyon 1 |
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Lyon |
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Pascal, J.P. |
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EcoFoG @ webmaster @ 235 |
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43 |
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Trébuchon, J.F. |
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Le bouclier oriental guyanais, cartographie des forêts tropicales humides à l’aide d’images SPOT4-VEGETATION et LANDSAT 7 ETM+ – Une méthode de validation |
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2003 |
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67 |
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Bouclier Oriental Guyanais Guyane Francaise Amazonie Amerique Du Sud Foret Foret Tropicale Humide Vegetation Validation Classification Teledetection Basse Resolution Haute Resolution Multi Echelle Spot4 Vegetation Landsat 7 Emt+ |
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Master's thesis |
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Université Pierre et Marie Curie |
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Toulouse |
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Gond, V. |
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EcoFoG @ webmaster @ 236 |
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44 |
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Author |
Tritsch, Isabelle |
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Dynamiques territoriales et revendications identitaires des Amérindiens wayãpi et teko de la commune de Camopi (Guyane française). |
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2013 |
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438 |
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Ph.D. thesis |
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Université des Antilles et de la Guyane |
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Cayenne - Guyane française |
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Thibaut, B. |
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EcoFoG @ carole.legrand @ |
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207 |
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Vanbellingen, Q; ; Bich, C. ; Amusant, N. ; Touboul, D. ; Sien, D. ; Brunelle, A. |
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Title |
Study of wood metabolites by TOF-SIMS imaging. |
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Conference Article |
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2014 |
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SIMS Europe |
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p.109 |
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Munster - Germany |
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9th European workshop on secondary ion spectroscopy - Final program and book of abstracts - 7 August 2014 |
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EcoFoG @ carole.legrand @ |
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244 |
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Author |
Vedel, V.; Camus, D.; Lamarre, G.P.A |
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Title |
Malaise and glass traps: useful means of catching canopy-dwelling spiders? |
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Journal Article |
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2011 |
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Newsletter of the British Arachnology Society |
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122 |
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12-15 |
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EcoFoG @ webmaster @ |
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157 |
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Vidal-Sallé, E.; Aimène, Y.; Boisse, P. |
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Title |
Use of a hyperelastic constitutive law for dry woven forming simulations |
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Conference Article |
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2011 |
Publication |
AIP Conference Proceedings |
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AIP Conf. Proc. |
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1353 |
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883-888 |
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Composite; Forming; Hyperelastic; Numerical modelling |
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The increasing use of composite materials in industry implies an increasing use of automatic processes between which LCM processes take a large place. The improvement of such processes needs an extensive use of numerical simulations for all the stages of the process. In particular, it is necessary to know how the dry reinforcement is shaped. This paper presents a hyperelastic constitutive model for textile composite reinforcement at large strain based on an additive potential representative to tension and in-plane shearing. The proposed potential is a function of the right Cauchy Green and structural tensor invariants whose choice corresponds to textile composite reinforcement mechanical behaviour. The model is implemented in a user subroutine of ABAQUS/Explicit. The accuracy of the model has been checked and some simulations are performed on deep drawing with hemispheric punch. A good agreement is obtained with experimental forming experiments. © 2011 American Institute of Physics. |
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Université des Antilles et de la Guyane, Cayenne 97300, France |
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Belfast, United Kingdom |
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0094243x (Issn) |
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EsaForm 2011, 27–29 Avril 2011 |
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Export Date: 4 September 2013; Source: Scopus; doi: 10.1063/1.3589627; Language of Original Document: English; Correspondence Address: Laboratoire de Mécanique des Contacts et des Structures, UMR CNRS 52 59, Université de LyonFrance |
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EcoFoG @ webmaster @ |
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208 |
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Author |
Vigo Cogueto, Caroline |
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Title |
S'adapter pour résister : trente ans d'évolution de la stratégie des ONG environnementalistes brésiliennes |
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2017 |
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68 |
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Cette recherche est consacrée à l’étude des stratégies de gestion des organisations non-gouvernementales environnementalistes (ONGE) en Amazonie brésilienne dans les 30 dernières années. Elle s’inscrit dans un travail plus large, mené dans le cadre de plusieurs projets de recherche (PRIGOUE, GEODD, REKABIOS), et s’intéresse, plus particulièrement, aux ONGE brésiliennes intervenant sur le terrain et à leurs stratégies d’alliances et de développement interne. Les données comprennent plus d’une trentaine d’entretiens, et les résultats montrent, entre autres, i) une tendance à l’extinction des petites ONGE et au renforcement des grandes ; ii) une alternance de pouvoir entre les ONGE et l’État, et une apparente dépendance des premières face au deuxième ; iii) un affaiblissent des alliances entre ONGE lorsque celles avec l’État se renforcent ; iv) l’émergence récente de nouveaux arrangements de partenariats entre les ONGE face à l’échec des réseaux d’auparavant. Nos résultats confirment aussi le socio-environnementalisme comme résultat d’une stratégie convergente des environnementalistes et du mouvement social. Finalement, nous montrons que les projets de « développement durable », devenus hégémoniques parmi les ONGE, s’adaptent bien au socio-environnementalisme tout comme à la « responsabilité sociale et environnementale » des entreprises, mais ces deux concepts peuvent être, dans la pratique, incompatibles. |
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Master's thesis |
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MRM |
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Montpellier - France |
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EcoFoG @ carole.legrand @ |
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295 |
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Author |
Vimal, R. |
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Title |
Effet de l'exploitation sur les caractéristiques démo-génétiques de la régénération chez Jacaranda copaia |
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2007 |
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64 |
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Master's thesis |
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Université des Antilles et de la Guyane |
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Kourou |
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Scotti, I. |
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EcoFoG @ webmaster @ 237 |
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80 |
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