1,141 research outputs found

    Controle alternativo de Mycosphaerella fragariae na cultura de morango orgĂąnico(Fragaria vesca).

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    A mancha das folhas ou micosferela causada pelo fungo Mycosphaerella fragariae Ă© uma das mais severas e prejudiciais doenças na produção de morango. Este trabalho tem como objetivo a busca de alternativas viĂĄveis e eficientes para o manejo ecolĂłgico da cultura de morango em pesquisa participativa desenvolvida no SĂ­tio SĂŁo JosĂ©, , Botucatu - SP, Brasil. O desenho experimental foi de blocos ao acaso com cinco repetiçÔes. Os tratamentos foram 1) Água; 2) Preparado de Equisetum arvense; 3) Preparado de Equisetum hyemale; 4) Preparado de Equisetum giganteum; 5) Preparado homeopĂĄtico de Equisetum hyemale, D28); 6) Preparado biodinĂąmico 501; 7) Calda bordalesa, a 1%. Todos os tratamentos foram eficazes no controle de micosferela, em relação a ĂĄgua, mostrando sua efetividade contra esta doença.Os tratamentos com preparados de E. hyemale e biodinĂąmico 501 apresentaram menor nĂșmero de manchas nas folhas em todas as avaliaçÔes realizadas

    Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

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    This paper presents measurements of the W+→Ό+ÎœW^+ \rightarrow \mu^+\nu and W−→Ό−ΜW^- \rightarrow \mu^-\nu cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector