589 research outputs found

    'BRS Sinuelo CL': cultivar de arroz irrigado para o sistema Clearfield.

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    Understanding the mechanisms of nuclear collisions: A complete study of the B 10 + Sn 120 reaction

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    Background: Reactions involving exotic and stable weakly bound nuclei have been extensively studied in recent years. Although several models have been successfully used to explain particular reaction outcomes, the answers to many questions remain elusive. In previous works, we presented elastic, inelastic, and transfer angular distributions for the B10+Sn120 system measured at ELab=31.5, 33.0, 35.0, and 37.5 MeV. The data set was analyzed through coupled reaction channels calculations in the context of the double-folding São Paulo potential. Purpose: We investigate nuclear reaction mechanisms for systems involving weakly bound projectiles. Method: Angular distributions for several nuclear reaction processes were measured for the B10+Sn120 system at ELab=39.70 MeV. Results: The new data set involves angular distributions for elastic scattering, projectile and target inelastic excitations, one-neutron pickup transfer, one-proton stripping transfer, deuteron pickup transfer, and He3,4 stripping transfer. We have also observed Be10 nuclei. The effect of the couplings to some nonelastic states on the angular distributions is discussed. Conclusion: The theoretical calculations within the coupled reaction channels formalism provide an overall good agreement with the corresponding inelastic, one-neutron stripping, one-proton pickup, one-deuteron pickup, and He3 stripping transfer data. However, to improve the description of the elastic scattering angular distribution, the inclusion of additional channels in the coupling scheme might be necessary.Fil: Gasques, L. R.. Universidade de Sao Paulo; BrasilFil: Alvarez, M. A. G.. Universidad de Sevilla; EspañaFil: Arazi, Andres. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigación y Aplicaciones No Nucleares. Gerencia Física (Centro Atómico Constituyentes). Proyecto Tandar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Carlson, B. V.. Instituto Tecnológico de Aeronáutica; BrasilFil: Chamon, L. C.. Universidade de Sao Paulo; BrasilFil: Fernández García, J. P.. Universidad de Sevilla; EspañaFil: Lépine Szily, A.. Universidade de Sao Paulo; BrasilFil: Lubian, J.. Universidade Federal Fluminense; BrasilFil: Rangel, J.. Universidade Federal Fluminense; BrasilFil: Rodríguez Gallardo, M.. Universidad de Sevilla; EspañaFil: Scarduelli, V.. Universidade de Sao Paulo; BrasilFil: Zagatto, V. A. B.. Universidade Federal Fluminense; Brasi

    Avaliação de linhagens Clearfield da Embrapa, em três locais, da região Litoral Sul, do Rio Grande do Sul. Safra 2006/07.

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    O objetivo deste trabalho é relatar os resultados obtidos nos VCUs realizados em quatro locais, três na região Litoral Sul (Pelotas, Arroio Grande e Santa Vitória do Palmar) e um no Litoral Norte (Osório), na safra 2006/07

    Effects of Aronia melanocarpa fruit juice on exploratory behaviour and locomotor activity in rats

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    The main bioactive substances in Aronia melanocarpa fruit juice (AMFJ) are polyphenols (flavonoids, procyanidins, and phenolic acids). A great number of polyphenols are able to traverse the blood-brain barrier. In recent years more attention is drawn to the ability of these substances to influence central nervous system functions. The aim of the present study was to investigate the effects of AMFJ on exploratory behaviour and locomotor activity in male Wistar rats. AMFJ was administered orally for 7, 14, 21, and 30 days at three increasing doses (2.5, 5, and 10 ml kg−1). The changes in exploratory behaviour and locomotor activity were recorded in an Opto Varimex apparatus. It was found that the low doses of AMFJ (2.5 and 5 ml kg−1) for all treatment periods did not significantly affect exploratory behaviour and locomotor activity of rats compared to the saline-treated controls. AMFJ at the highest dose of 10 ml kg−1 had no significant effect on exploration and locomotion for the treatment periods of 7 and 14 days, while for the periods of 21 and 30 days it significantly decreased the number of horizontal and vertical movements, which might be the result of a sedative effect. At all the doses and testing periods, AMFJ did not disturb the progressive decrease in motor behaviour, suggesting habituation

    BRS Pampa CL: a new IMI herbicide-resistant premium quality grain irrigated rice cultivar.

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    BRS Pampa CL is a rice cultivar developed by Embrapa, recommended for irrigated cultivation in Rio Grande do Sul State, Brazil. It shows modern architecture, high tillering, early cycle, and tolerance to the imidazolinone herbicide Kifix®. It stands out for its high yield potential and excellent grain quality.Cultivar Release

    BRS A701 CL: nova cultivar de arroz irrigado para o sistema Clearfield no Rio Grande do Sul.

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    A Embrapa apresenta seu novo lançamento comercial, a BRS A701 CL, fonte de tolerância aos herbicidas do grupo das imidazolinonas, sendo considerada de segunda geração. A BRS A701CL foi desenvolvida utilizando gene que confere resistência a herbicidas da classe das imidazolinonas, identificado na própria espécie Oryza sativa L., não havendo necessidade de ?importação? de genes de outras espécies para a composição do genoma da nova cultivar. Os testes de campo foram iniciados em 2010/11 e, em 27/10/2015 o Ministério da Agricultura, Pecuária e Abastecimento (MAPA) concedeu o registro nº 34460 para cultivo no Rio Grande do Sul

    Latin Americans show wide-spread Converso ancestry and imprint of local Native ancestry on physical appearance

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    Historical records and genetic analyses indicate that Latin Americans trace their ancestry mainly to the intermixing (admixture) of Native Americans, Europeans and Sub-Saharan Africans. Using novel haplotype-based methods, here we infer sub-continental ancestry in over 6,500 Latin Americans and evaluate the impact of regional ancestry variation on physical appearance. We find that Native American ancestry components in Latin Americans correspond geographically to the present-day genetic structure of Native groups, and that sources of non-Native ancestry, and admixture timings, match documented migratory flows. We also detect South/East Mediterranean ancestry across Latin America, probably stemming mostly from the clandestine colonial migration of Christian converts of non-European origin (Conversos). Furthermore, we find that ancestry related to highland (Central Andean) versus lowland (Mapuche) Natives is associated with variation in facial features, particularly nose morphology, and detect significant differences in allele frequencies between these groups at loci previously associated with nose morphology in this sample.Instituto Multidisciplinario de Biología Celula
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