223 research outputs found

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    Attivit\ue0 di didattica della fraseologia spagnola in supporto digitale (casa editrice SM, Madrid) http://www.sm-ele.com/ArchivosColegios/NuevoELEAdmin/Archivos/MasClaroQueElAgua/PROYECTO%20COLOR.pd

    Antifeedant and Toxic Effect of Crude Extract from Flourensia oolepis and their Impact on Nutritional Parameters of Helicoverpa gelotopoeon

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    Botanical insecticides are one of the environmentally acceptable options for pest management. Extract of Flourensia oolepis (known as chilca), a plant endemic to the province of C\uf3rdoba, Argentina, has shown insecticidal activity. The aim of this work was to study the effect of crude extract of this F. oolepis on the nutritional parameters of Helicoverpa gelotopoeon , a polyphagous species recently reported as one of the most serious pests of chickpea. Choice tests were conducted using different doses of extract (1 to 10%) and acetone (control), and no-choice tests, feeding larvae for 10 days with chickpea leaves treated with extract (1 to 5%), with controls (water and acetone). We used three third instar larvae per replica and 8 repetitions of each. The variables measured were: consumption, fresh and dry weight of larvae, of feces and of the leaves given every 48 hours. We calculated the feeding inhibition and nutrition indices, and survival. In choice bioassays using the 10% dose, larvae preferred the control leaves, with the extract acting as a feeding inhibitor (92%). In the nochoice test, leaf consumption was markedly reduced with extract, affecting larval growth in a dose-dependent manner (p < 0.05), as well as feed utilization and lepidoptera survival

    Search for an Invisibly-Decaying Higgs Boson at LEP

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    A search for a Higgs boson produced in e^+e^- collisions in association with a Z boson and decaying into invisible particles is performed. Data collected at LEP with the L3 detector at centre-of-mass energies from 189 GeV to 209 GeV are used, corresponding to an integrated luminosity of 0.63/fb. Events with hadrons, electrons or muons with visible masses compatible with a Z boson and missing energy and momentum are selected. They are consistent with the Standard Model expectations. A lower limit of 112.3 GeV is set at 95% confidence level on the mass of the invisibly-decaying Higgs boson in the hypothesis that its production cross section equals that of the Standard Model Higgs boson. Relaxing this hypothesis, upper limits on the production cross section are derived

    Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at sNN\sqrt{s_{\rm NN}} = 2.76 TeV

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    The yield of charged particles associated with high-pTp_{\rm T} trigger particles (8<pT<158 < p_{\rm T} < 15 GeV/cc) is measured with the ALICE detector in Pb-Pb collisions at sNN\sqrt{s_{\rm NN}} = 2.76 TeV relative to proton-proton collisions at the same energy. The conditional per-trigger yields are extracted from the narrow jet-like correlation peaks in azimuthal di-hadron correlations. In the 5% most central collisions, we observe that the yield of associated charged particles with transverse momenta pT>3p_{\rm T}> 3 GeV/cc on the away-side drops to about 60% of that observed in pp collisions, while on the near-side a moderate enhancement of 20-30% is found.Comment: 15 pages, 2 captioned figures, 1 table, authors from page 10, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/350

    De Minsheu a Sobrino. Consideraciones sobre los "Di\ue1logos did\ue1cticos"

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    ProtoELE, analisi dei primi dialoghi nei manuali per l'apprendimento dello spagnolo L2 dal S. XVI al XVIII, con speciale attenzione alla tradizione che culmina con Francisco Sobrin

    Rese\uf1a de Manual de escritura acad\ue9mica y profesional (2 vols.) dirigido por Estrella Montol\uedo, Barcelona, Ariel, 2014. en Infoling 5

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    Recensione Manuale di scrittura accademia e professionale a cura di Estrella Montol\uedo (Barcelona, Ariel, 2014

    RESE 1A al Manual de escritura acad\ue9mica y profesional (vols I y II) Barcelona, Ariel 2014

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    Rese\uf1a "Manual de Escritura acad\ue9mica y profesional" dirigido por Estrella Montol\uedo (2 vols.
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