L'évolution tardive du Domaine Sud Armoricain (segment de la chaîne Varisque Ouest Européenne), se traduit par un effondrement gravitaire de la croûte préalablement épaissie dans un contexte tectonique extensif. Cette extension s'accompagne, dans tout le domaine, d'une fusion partielle de la croûte moyenne à inférieure et de l'exhumation des roches métamorphiques issues de niveaux crustaux profonds. L'approche pluridisciplinaire conduite dans cette étude permet de proposer un calendrier précis de la fusion crustale et d'étudier les mécanismes de la déformation responsable de l'exhumation de la croûte moyenne à inférieure. Une des démarches adoptées associe l'identification structurale et cinématique précise des témoins de l'étirement et leur datation multiméthodes (U-Th/Pb sur monazite, et A/Ar sur micas). Dans la partie occidentale du Domaine Sud Armoricain, cette approche permet ainsi de documenter un continuum de déformation extensive durant plus de 20 Ma, qui accompagne en partie l'exhumation des roches de haut grade qui elle, se développe entre 325 Ma et 300 Ma. L'étude géophysique, combinant ASM et gravimétrie, permet en outre de caractériser la structure interne et la géométrie en profondeur du complexe granitique de Carnac, dont la mise en place apparaît être le témoin du stade le plus précoce de ce continuum. La fusion partielle des migmatites et la mise en place des plutons granitiques, interprétées à la fois comme le moteur et la conséquence de l'étirement et de l'exhumation, est estimée entre 335 Ma et 320 Ma. Cette anatexie généralisée apparaît synchrone à l'échelle de tout le domaine, ce qui permet un regard nouveau sur les stades tardi-orogéniques du Domaine Sud Armoricain. L'étude de la déformation extensive et de l'exhumation dans les portions occidentale et orientale, met en évidence des contrastes de style tectonique, suggérant une exhumation plus importante des parties orientales du Domaine Sud Armoricain.

Research has showed repeatedly the value of extensive reading in the L2 classroom for improved reading comprehension (Elley & Mangubhai, 1981; Mason & Krashen, 1997; Renandya, Rajan, & Jacobs, 1999). However, additional support beyond traditional extensive reading practices may be needed for very low proficiency learners. This report reviews research on implementing an extensive reading program for beginning level adult-education English language learners. It presents arguments for supporting extensive reading through shared reading, including read-alouds, use of children’s literature, and strategy modeling techniques. It also discusses the benefits of student-generated texts for boosting vocabulary and comprehension skills. The report concludes with pedagogical implications for including a strong reading component in the adult education ESL curriculum and suggestions for evaluating the strength and utility of such a program. / text

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Master of Science in Veterinary Science / A investigation into soil nutrient and the change soil physical properties was carried out for three pasture systems for dairy cows; the complementary forage rotation (CFR) which comprised of brassica (Brassica napus )/clover (Trifolium resupinatum ) and maize (Zea mays) capable of achieving more than 40 t/ha, the typical intensive pasture (PI) with kikuyu grass (Penisetum clandestinum) over-sown with ryegrass ( Lolium multiflorum ) and the extensive system (PE); on two soil types (brown chromosol and black vertisol) . The study demonstrated that the CFR system was capable of doubling its yield by using similar fertilizers (N, P and K) and water inputs compared to these of the PI system resulting of greater nutrients (N and K) and water use efficiencies. Overall, the nutrient lost through runoff water was very limited for two intensive systems and nearly nil for PE system. Also similar trends were observed for soil physical properties in the intensive systems except for the topsoil (0-10 cm) where light acidification (P= 0.04) was recorded in the CFR probably due to the soil works before the maize sowing.

Master of Science in Veterinary Science / A investigation into soil nutrient and the change soil physical properties was carried out for three pasture systems for dairy cows; the complementary forage rotation (CFR) which comprised of brassica (Brassica napus )/clover (Trifolium resupinatum ) and maize (Zea mays) capable of achieving more than 40 t/ha, the typical intensive pasture (PI) with kikuyu grass (Penisetum clandestinum) over-sown with ryegrass ( Lolium multiflorum ) and the extensive system (PE); on two soil types (brown chromosol and black vertisol) . The study demonstrated that the CFR system was capable of doubling its yield by using similar fertilizers (N, P and K) and water inputs compared to these of the PI system resulting of greater nutrients (N and K) and water use efficiencies. Overall, the nutrient lost through runoff water was very limited for two intensive systems and nearly nil for PE system. Also similar trends were observed for soil physical properties in the intensive systems except for the topsoil (0-10 cm) where light acidification (P= 0.04) was recorded in the CFR probably due to the soil works before the maize sowing.

Master of Science in Veterinary Science / A investigation into soil nutrient and the change soil physical properties was carried out for three pasture systems for dairy cows; the complementary forage rotation (CFR) which comprised of brassica (Brassica napus )/clover (Trifolium resupinatum ) and maize (Zea mays) capable of achieving more than 40 t/ha, the typical intensive pasture (PI) with kikuyu grass (Penisetum clandestinum) over-sown with ryegrass ( Lolium multiflorum ) and the extensive system (PE); on two soil types (brown chromosol and black vertisol) . The study demonstrated that the CFR system was capable of doubling its yield by using similar fertilizers (N, P and K) and water inputs compared to these of the PI system resulting of greater nutrients (N and K) and water use efficiencies. Overall, the nutrient lost through runoff water was very limited for two intensive systems and nearly nil for PE system. Also similar trends were observed for soil physical properties in the intensive systems except for the topsoil (0-10 cm) where light acidification (P= 0.04) was recorded in the CFR probably due to the soil works before the maize sowing.

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniv., 2003. / Härtill 5 uppsatser.

Made available in DSpace on 2016-05-17T16:51:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-08-10. Added 1 bitstream(s) on 2016-05-17T16:54:56Z : No. of bitstreams: 1 000864315.pdf: 1933866 bytes, checksum: 3d5e86a181b0ce722fb5dfee9bb0700e (MD5) / Brazilian livestock consists of animals raised and finished in tropical pastures, most of them established in medium and low fertility soils. The tropical forages, however, are limited in some nutrients, especially in minerals, which can compromise the results of cattle production. Among the minerals, phosphorus (P) occupies an important position due to its role in animals' metabolism and to its cost, which represents most of the mineral supplements costs, so rendering this input the most expensive for the definition of the production costs of cattle raised in grasslands. Often, the farmers do not follow the ideal techniques for the animal's' mineral supplementation and, besides that, practical observations suggest that not always the animal productivity is related to the mineral supplementation techniques or with the P contents of the supplements. Following the hypothesis that the recommended levels of P can be reduced without damaging the animal productivity, the aim of this trial was to check on the effects of reducing the phosphorus supplementation concentrations (from 4% to 1.8%) in a beef cow herd raised on Urochloa decumbens pastures on the productive and reproductive parameters, as well as on the supplementation costs. The study was conducted on the cerrado biome, from 2011 to 2013. Variables analyzed included pregnancy rate, calving interval, weight of calves at weaning and cost of supplementation. No changes were found for the productive and reproductive performance of the herd. However, there was a significant reduction in the supplementation costs when the herd was supplemented with a mineral mixture containing 1.8% phosphorus

The aim of this paper is to analyze and describe the historical, institutional and structural factors of deforestation taking into account the dynamics of intensification or «extensification» of land use in the Amazon region of Tena in Ecuador. A first conclusion was finding the reproduction of an extensive pattern of agriculture in Tena as an important direct agent of deforestation. We believe that this agricultural system originates in historical processes from the sixties, when the state intervenes promoting certain policies of extensive land use, through road construction and specific mechanisms of land titling. The current social and institutional dynamics have failed to reverse such situation, since deforestation is still playing, although there is a tendency to close the agricultural frontier. The indicated form of farming and the corresponding rates of deforestation are played today as a result of structural factors, such as farm size, proximity to roads, the type of technology used and unfavorable market linkages. / El objetivo del presente artículo es analizar y describir los factores históricos, institucionales y estructurales de la deforestación teniendo en cuenta la dinámica de intensificación o «extensificación» de uso del suelo en la región amazónica de Tena, en Ecuador. Una primera conclusión fue constatar la reproducción de una agricultura extensiva en Tena como un importante agente directo de la deforestación. Creemos que dicho sistema agrícola se origina en procesos históricos, desde la década de 1960, cuando el Estado ecuatoriano interviene fomentando ciertas políticas de ocupación extensiva del suelo, a través de la construcción de caminos de penetración y algunas modalidades específicas de titulación de tierras. Las dinámicas sociales e institucionales actuales no han logrado revertir tal situación, pues la deforestación se sigue reproduciendo, a pesar de que existe la tendencia a que se cierre la frontera agrícola. La indicada forma de agricultura y las correspondientes tasas de deforestación se reproducen en la actualidad como resultado de factores estructurales, tales como el tamaño del predio, cercanía a las carreteras, el tipo de tecnología utilizada y una desfavorable articulación con el mercado.

This thesis is concerned with keeping the gene pool of traditional fruit varieties and keeping the locality character for the extensive fruit orchard. Here is treated in detail the characterization of the area of the concerned place, selection of suitable varieties and their Pomology. Together with an evaluation of suitable places for the final planting are also calculated costs for the outplanting.