12 research outputs found

    Sensibilisation à la mise en scène de l’information télévisée en classes de seconde et première

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    Professorat des lycées et collègesLe mémoire propose une approche théorique concernant l'exploitation de documents audiovisuels en classe de langue au lycée, et plus précisément l'exploitation de reportages enregistrés sur des chaînes anglophones. Ce travail fait également le point sur la façon dont il est possible de développer l'esprit critique des élèves. Dans une deuxième partie, trois projets pédagogiques concernant des reportages télévisés sont présentés. Ils ont pour objectif de faire prendre conscience aux élèves que l'information télévisée est mise en scène. La mise en œuvre des projets est analysée et un bilan de chaque étude est présenté

    Le site néolithique d'Hassi Menikel

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    Le site d'Hassi Ménikel fut découvert en 1968 lors d'une mission commune effectuée dans la région d'Hassi R'mel. Il s'agit d'un vaste gisement de surface - environ 1000 m de long et 50 m de large - situé à proximité du puits de même nom, quelques 1000 m au N.-W. Non loin de là vers le N. et le N.-E. existent quelques foyers avec silex qui n'appartiennent peut-être pas à la même culture ; mais les éléments de connaissance en ont paru trop insuffisants pour être analysés fructueusement et n'ont pas été l'objet de récoltes. Au contraire, le gisement est suffisamment important et typé pour mériter une étude, d'autant qu'il n'existe encore aucun travail concernant le Néolithique de cette région

    Hull content and chemical composition of whole seeds, hulls and germs in cultivars of rapeseed (

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    Objective: To study of the compositional breakdown of seed components between the integument and the germ and its variability according to genetic and environmental factors. Methods: The study used 19 rapeseed lots grown in two areas of contrasted agronomical potential harvested in 2011. Pure fractions of hulls and germs were mechanically separated by centrifuge impacts after freezing the seeds. Chemical composition of the whole seeds and the pure kernel and hull fractions was determined. The results were used to calculate the seed hull content. Results: Hull accounted for 18.2% of total seed content. Real oil content of the hulls (8.4% dry basis) was lower than in the literature. Hulls contained 2.9% of the oil, 11.2% of the proteins, 73% of the NDF; 80% of the ADF, 95% of the lignin and 6.0% of the glucosinolates of the whole seed. The percentage of hulls in total seed content shows low variability, although the oil and the protein content of the fractions were significantly affected by cultivar and to a lesser extent by geographic location of the crops. Conclusion: Completely dehulled seeds could result in a meal with 48.3% protein (dry basis) and low fiber content (10.8% NDF, 6.6% ADF, 0.5% ADL) but higher glucosinolate content (130% compared to defatted seeds)

    Hull content and chemical composition of whole seeds, hulls and germs in cultivars of rapeseed ( Brassica napus

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    Objective: To study of the compositional breakdown of seed components between the integument and the germ and its variability according to genetic and environmental factors. Methods: The study used 19 rapeseed lots grown in two areas of contrasted agronomical potential harvested in 2011. Pure fractions of hulls and germs were mechanically separated by centrifuge impacts after freezing the seeds. Chemical composition of the whole seeds and the pure kernel and hull fractions was determined. The results were used to calculate the seed hull content. Results: Hull accounted for 18.2% of total seed content. Real oil content of the hulls (8.4% dry basis) was lower than in the literature. Hulls contained 2.9% of the oil, 11.2% of the proteins, 73% of the NDF; 80% of the ADF, 95% of the lignin and 6.0% of the glucosinolates of the whole seed. The percentage of hulls in total seed content shows low variability, although the oil and the protein content of the fractions were significantly affected by cultivar and to a lesser extent by geographic location of the crops. Conclusion: Completely dehulled seeds could result in a meal with 48.3% protein (dry basis) and low fiber content (10.8% NDF, 6.6% ADF, 0.5% ADL) but higher glucosinolate content (130% compared to defatted seeds)

    Hull content and chemical composition of whole seeds, hulls and germs in cultivars of rapeseed (Brassica napus)

    No full text
    Objective: To study of the compositional breakdown of seed components between the integument and the germ and its variability according to genetic and environmental factors. Methods: The study used 19 rapeseed lots grown in two areas of contrasted agronomical potential harvested in 2011. Pure fractions of hulls and germs were mechanically separated by centrifuge impacts after freezing the seeds. Chemical composition of the whole seeds and the pure kernel and hull fractions was determined. The results were used to calculate the seed hull content. Results: Hull accounted for 18.2% of total seed content. Real oil content of the hulls (8.4% dry basis) was lower than in the literature. Hulls contained 2.9% of the oil, 11.2% of the proteins, 73% of the NDF; 80% of the ADF, 95% of the lignin and 6.0% of the glucosinolates of the whole seed. The percentage of hulls in total seed content shows low variability, although the oil and the protein content of the fractions were significantly affected by cultivar and to a lesser extent by geographic location of the crops. Conclusion: Completely dehulled seeds could result in a meal with 48.3% protein (dry basis) and low fiber content (10.8% NDF, 6.6% ADF, 0.5% ADL) but higher glucosinolate content (130% compared to defatted seeds)

    De l'existence d'un NĂ©olithique sans poterie dans le Bas-Sahara et de ses relations avec les sebkhas

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    International audienceDiverses industries préhistoriques ont été reconnues aux abords des sebkhas, dans la partie sud-ouest du Bas-Sahara, elles révèlent un phénomène de néolithisation effectué en deux temps. Dans une première étape intervient une modification de l'industrie lithique, dans une seconde étape, la poterie s'introduit
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