2,823 research outputs found

    Diplomatic edition and paleographic analysis of four manuscripts written in Great Southern River, Brazil, between the end of the 19th century and the beginning of the 20th century

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    Este artículo presenta ediciones diplomáticas de cuatro manuscritos redactados en Río Grande del Sur, Brasil, entre finales del siglo XIX y principios del siglo XX, así como un análisis paleográfico de los respectivos documentos. En este análisis, observamos aspectos estrictamente ortográficos divergentes en relación con la norma actualmente vigente en la lengua portuguesa, atendiendo a cuatro grandes categorías, con las respectivas subcategorías: sistema vocálico (sustituciones vocálicas, hiato, uso de y); sistema consonántico (grupos consonánticos impropios, consonantes dobles, uso de h, sustituciones de consonantes); diacríticos (acento agudo, acento circunflejo, acento grave, tilde) y separación lexical (hiposegmentación). Resaltamos, de este análisis, los vestigios latinos aún presentes en tales documentos, evidenciando la relación indisociable entre la comprensión de la lengua y el recorrido histórico por ella realizado. Se trata de un material de interés especial para el filólogo, aunque también puede resultar de interés para otros lingüistas como fonólogos y sociolingüistas.This article presents diplomatic editions of four manuscripts written in Great Southern River, Brazil, between the end of the 19th century and the beginning of the 20th century, as well as a paleographic analysis of the respective documents. In this analysis, we observed strictly orthographic divergent aspects in relation to the Portuguese current norm, considering four major categories, with the respective subcategories: vowel system (vowel substitutions, hiatus and use of y); consonantal system (improper consonant clusters, double consonants, use of h, consonantal substitutions); diacritics (acute accent, circumflex accent, severe accent, til) and vocabulary separation (hyposogmentation). We point out, from this analysis, to the Latin remnants still present in these documents, evidencing the inextricable relationship between the understanding of the language and the historical route it has traveled. Material of special interest to the philologist, we also believe that it may interest other linguists, such as phonologists and sociolinguists

    Revestimentos comestíveis à base de zeínas e óleos vegetais em presunto cru ovino

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    A produção global de ovinos ultrapassa u m b i l h ã o c a b e ç a s ( acesso 13/08/20) (FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS, 2019). No Brasil, houve um crescimento de 15% na produção de carne ovina na última década (Andrade et al., 2017). Em relação ao consumo, a carne de cordeiro é a preferida pelo consumidor; e destaca-se pela maciez, suculência, cor mais clara, além de conter menos gordura, se comparada à carne de ovinos mais velhos (Dutra et al., 2013). Em contraposição, a carne de animais velhos é menos apreciada e, assim, torna-se uma alternativa para o seu aproveitamento na elaboração de produtos cárneos derivados. Dentre estes, pode-se destacar o presunto cru que é um produto cárneo salgado obtido do pernil de animais acima de um ano de idade (categorias borrego e animais de descarte), que passa por processos de cura, maturação, salga e dessecação (Nalério & Giongo, 2017). https://thesheepsite.com/focus/5m/99/ g l o b a l - s h e e p - m e a t - m a r k e t - thesheepsite A ação de microrganismos, em produtos curados, pode ocorrer tanto durante o processo de abate dos animais, quanto pela contaminação de sua superfície durante o processamento. Alguns m i c rorgani s m os , co m u m ente identifi cados na indús tria de processamento de carne, são a Serratia liquefaciens a qual também é um dos agentes responsáveis pela deterioração de presuntos curados (Hospital, 2017) e o Proteus vulgaris, ambos da é família Enterobacteriaceae (Terra et al., 2007). Além disso, devido à gordura presente, os produtos cárneos também podem sofrer processos de oxidação (rancificação), o que torna o alimento inadequado para o consumo. As coberturas ou reves ti m entos comestíveis, dependendo de sua composição, podem agir na redução da proliferação de microrganismos, perda de umidade, além de retardar a rancidez, sendo, portanto uma alternativa para se aumentar o tempo de prateleira de tais alimentos (Cordeiro et al., 2019) (Colzato et al., 2011) (Forato et al., 2015). Neste comunicado técnico é descrita a utilização de zeínas, proteínas de reserva do milho, na elaboração de revestimentos comestíveis para de aplicá-los em presunto cru ovino. As zeínas são adequadas para preparação de revestimentos comestíveis por serem não tóxicas e hidrofóbicas. No entanto, revestimentos preparados somente a base destas proteínas são quebradiços e portanto se faz necessária a adição de materiais que possam reduzir este efeito (Scramin et al., 2011). Óleos vegetais têm sido utilizados como agentes plastificantes em revestimentos comestíveis, devido à sua não toxicidade, baixo custo e, dependendo da origem do óleo, ter propriedades antimicrobianas (Base et al., 2017, Garcia et al., 2000). Assim, foram preparados revestimentos a base de zeínas contendo óleos vegetais e sendo eles aplicados em amostras de presunto cru ovino, com o objetivo de avaliar sua ação quanto à oxidação lipídica, variação de massa e aspecto visual. Além disso, utilizou-se a ressonância magnética nuclear (RMN) em baixo campo, que é uma técnica não destrutiva e pode ser utilizada para avaliar a distribuição da água em produtos cárneos

    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+μ+νW^+ \rightarrow \mu^+\nu and WμνW^- \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

    Measurement of χ c1 and χ c2 production with s√ = 7 TeV pp collisions at ATLAS

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    The prompt and non-prompt production cross-sections for the χ c1 and χ c2 charmonium states are measured in pp collisions at s√ = 7 TeV with the ATLAS detector at the LHC using 4.5 fb−1 of integrated luminosity. The χ c states are reconstructed through the radiative decay χ c → J/ψγ (with J/ψ → μ + μ −) where photons are reconstructed from γ → e + e − conversions. The production rate of the χ c2 state relative to the χ c1 state is measured for prompt and non-prompt χ c as a function of J/ψ transverse momentum. The prompt χ c cross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χ c decays. The fractions of χ c1 and χ c2 produced in b-hadron decays are also measured

    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

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    A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

    Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

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    The production of a W boson in association with a single charm quark is studied using 4.6 fb−1 of pp collision data at s√ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96+0.26−0.30 at Q 2 = 1.9 GeV2, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally, the cross-section ratio σ(W + +c¯¯)/σ(W − + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s−s¯¯¯ quark asymmetry

    Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at s√=8 TeV with ATLAS

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    Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of s√=8 TeV. The analysis is performed in the H → γγ decay channel using 20.3 fb−1 of data recorded by the ATLAS experiment at the CERN Large Hadron Collider. The signal is extracted using a fit to the diphoton invariant mass spectrum assuming that the width of the resonance is much smaller than the experimental resolution. The signal yields are corrected for the effects of detector inefficiency and resolution. The pp → H → γγ fiducial cross section is measured to be 43.2 ±9.4(stat.) − 2.9 + 3.2 (syst.) ±1.2(lumi)fb for a Higgs boson of mass 125.4GeV decaying to two isolated photons that have transverse momentum greater than 35% and 25% of the diphoton invariant mass and each with absolute pseudorapidity less than 2.37. Four additional fiducial cross sections and two cross-section limits are presented in phase space regions that test the theoretical modelling of different Higgs boson production mechanisms, or are sensitive to physics beyond the Standard Model. Differential cross sections are also presented, as a function of variables related to the diphoton kinematics and the jet activity produced in the Higgs boson events. The observed spectra are statistically limited but broadly in line with the theoretical expectations

    Measurement of the flavour composition of dijet events in pp collisions at root s=7 TeV with the ATLAS detector

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    This paper describes a measurement of the flavour composition of dijet events produced in pp collisions at √s=7 TeV using the ATLAS detector. The measurement uses the full 2010 data sample, corresponding to an integrated luminosity of 39 pb−1. Six possible combinations of light, charm and bottom jets are identified in the dijet events, where the jet flavour is defined by the presence of bottom, charm or solely light flavour hadrons in the jet. Kinematic variables, based on the properties of displaced decay vertices and optimised for jet flavour identification, are used in a multidimensional template fit to measure the fractions of these dijet flavour states as functions of the leading jet transverse momentum in the range 40 GeV to 500 GeV and jet rapidity |y|<2.1. The fit results agree with the predictions of leading- and next-to-leading-order calculations, with the exception of the dijet fraction composed of bottom and light flavour jets, which is underestimated by all models at large transverse jet momenta. The ability to identify jets containing two b-hadrons, originating from e.g. gluon splitting, is demonstrated. The difference between bottom jet production rates in leading and subleading jets is consistent with the next-to-leading-order predictions

    Evapotranspiração e coeficientes de cultivo da beterraba orgânica sob cobertura morta de leguminosa e gramínea.

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    As práticas agrícolas que maximizam a produtividade e o uso da água são de vital importância para a agricultura. Assim, foram testados três tipos de manejo do solo com objetivo de determinar a evapotranspiração (ETc) e os coeficientes de cultivo (kc) da beterraba. Os tipos de manejo foram a utilização de coberturas mortas vegetais, denominadas capim cameroon (Pennisetum purpureum), gliricídia (Gliricidia sepium) e solo sem cobertura morta em área experimental do SIPA (Sistema Integrado de Produção Orgânica) localizado em Seropédica, Brasil. A lâmina de irrigação foi estimada com base no balanço de água no solo, cujo monitoramento foi realizado com a técnica da TDR. As ETc acumuladas para a cultura da beterraba foram 59,41; 55,31 e 119,62 mm, respectivamente, para capim cameroon, gliricídia e solo sem cobertura morta. A evapotranspiração de referência (ETo) foi obtida por meio do modelo de Penamn-Monteith. Os valores médios de kc obtidos para as fases inicial, média e final de desenvolvimento foram de 0,39; 0,42 e 1,02; 0,79; 0,76 e 1,18; e 0,56; 0,61 e 0,84, respectivamente, para capim cameroon, gliricídia e solo sem cobertura morta. O uso da cobertura do solo com gramínea ou leguminosa minimizou de forma expressiva a demanda hídrica da cultura da beterraba (Beta vulgaris)

    Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector

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    The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30
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