Search results for "vol"
showing 10 items of 19880 documents
Etude de l'évolution du potentiel génétique de populations bactériennes dégradant l'atrazine
2011
Atrazine, one of the most used herbicide to control the development of weeds in crop, has led to the contamination of the environment. Repeated exposure to this herbicide resulted in the emergence of microbial populations able to degrade atrazine and to use it as a nitrogen source for its growth. These microbial populations are responsible for accelerated biodegradation of atrazine (BDA), a key ecosystemic service diminishing the persistence of this herbicide in the environment. The aim of this PhD work was to study genetic and physiological mechanisms responsible for functioning and improving of this ecosystemic service. We applied an experimental approach starting from genes to communitie…
Una década prodigiosa: los años 60: entre reformas y rupturas
2006
Chemical Composition of the Essential Oil of Bupleurum Fontanesii (Apiaceae) Growing Wild in Sicily and its Activity on Microorganisms Affecting Hist…
2016
Hydrodistillation of the flowers (BpFl) of and fruits (BpFr) of Bupleurum fontanesii Guss. ex Caruel gave two oils that were analyzed by GC and GC-MS. The main components were α-elemol (16.7%), caryophyllene oxide (16.4%) and heptacosane (15.9%) in BpFl, and spathulenol (16.8%), caryophylladienol I (13.2%) and α-elemol (12.8%) in BpFr. A good antimicrobial activity against several microorganisms, including Bacillus subtilis, Staphylococcus aureus, Fusarium oxysporum and Aspergillus niger, all infesting historical art craft, was also determined.
Chemical composition and biological activity of the essential oil of Ballota hispanica (L.) Benth. growing wild in Sicily
2015
Ballota L. comprises several relevant species largely used for their excellent therapeutic properties. Ballota hispanica (L.) Benth. is widely used in herbal medicine, and it is sold in herbalist shops for its sedative and antispasmodic properties. Considering its traditional medicinal use and the lack of scientific studies on the volatile components of this species as well as on its biological activities, in this study the chemical composition of the essential oil from aerial parts of B. hispanica, collected in Sicily, was evaluated by gas chromatography and gas chromatographyâmass spectrometry. α-Elemol was the most abundant component of the oil (10.9%), followed by α-ylangene (8.5%),…
Las revoluciones del siglo XVII en las islas británicas: una perspectiva multiterritorial
2020
Mitä äidit ja isät odottavat neuvolan vanhempainryhmiltä
1998
Les limites de la théorie du salaire d'efficience
1998
Efficiency wage theory, evolved by the "new keynesians", is part of a research programme concerned with explaining "involuntary" unemployment as part of the "general equilibrium". So, these works are a synthesis attempt of neo-classical and keynesian analyses in the employment area. Indeed, the authors place their analysis in a walrasian framework, but they integrate a keynesian concept to complete their models. In order to achieve their purpose, the efficiency wage theorists formulate two propositions on which their argument is based: 1° the relation supposed rising between the rate of wage and the productivity of wage earners, 2° the determination of the rate of wage outside the market. W…
Pour une anthropologie pragmatiste et plébéienne du patrimoine : un scenario contre-hégémonique
2019
À partir de plusieurs constats, le débordement des institutions patrimoniales, l’insistance de formes citoyennes ou plébéiennes des revendications d’attachements, la prégnance de la figure du vivant, la raréfaction du futur devant la perspective anthropocénique, ce texte voudrait jeter les bases d’un scénario contre-hégémonique du patrimoine : détaché des institutions d’État, loin du marché et de sa logique néo-libérale, engagé dans des expériences de problèmes publics, sensible à la pluralité ontologies et des modes de connaissance… Some preliminary observations: too much is now asked of heritage institutions; new citizens’ and plebeian forms are emerging of asserting attachments; life-sci…
La libertad incorporada como clave para la neuroeducación moral
2019
La libertad es uno de los principales atributos con los que tradicionalmente se ha caracterizado al ser humano. El objetivo de este artículo es analizar si a la luz de las investigaciones y los experimentos neurocientíficos es posible seguir caracterizando al ser humano como un ser con libertad. Para ello se alude al conocido experimento de Benjamin Libet y las conclusiones reduccionistas que influyentes autores como Patricia S. Churchland o Michael Gazzaniga extraen para la filosofía práctica. Desde una metodología hermenéutica, se denuncia el reduccionismo neurocientífico que pretende negar la libertad basándose en evidencias empíricas. Frente a dicho reduccionismo se propone un enfoque h…
Le changement d'échelle du commerce équitable : une réalité empirique
2010
International audience; En France, depuis le début des années 2000, le commerce équitable (CE) sort progressivement de la confidentialité et connaît un changement d'échelle spectaculaire. Dans les associations locales de promotion du CE, relais des organisations nationales historiques telles qu'Artisans du Monde (AdM) ou Max Havelaar France (MHF), cette croissance se manifeste sous des formes variées - multiplication, diversification et spécialisation des activités, des ventes, etc. - et entraîne une forme de professionnalisation qui induit une reconfiguration plus ou moins profonde de ces dernières. À travers l'étude de deux groupes locaux - AdM et Autrement/Equi'Max - à Dijon (Bourgogne),…