223 research outputs found
A todo color
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
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
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 = 2.76 TeV
The yield of charged particles associated with high- trigger
particles ( GeV/) is measured with the ALICE detector in
Pb-Pb collisions at = 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 GeV/ 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"
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
Recensione Manuale di scrittura accademia e professionale a cura di Estrella Montol\uedo (Barcelona, Ariel, 2014
Estado del conocimiento de humedales del norte patag\uf3nico (Argentina): aspectos relevantes e importancia para la conservaci\uf3n de la biodiversidad regional
El papel de la televisi\uf3n en el desarrollo del ni\uf1o desde una perspectiva construccionista. \ubfhacia un adulto v\ueddeo-ni\uf1o?
RESE 1A al Manual de escritura acad\ue9mica y profesional (vols I y II) Barcelona, Ariel 2014
Rese\uf1a "Manual de Escritura acad\ue9mica y profesional" dirigido por Estrella Montol\uedo (2 vols.
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