Atributos sensoriais da carne de cordeiros de diferentes genótipos terminados em confinamento.

O objetivo deste estudo foi avaliar a influência de diferentes genótipos na qualidade sensorial da carne de cordeiros ½Dorper x ½SPRD, ½Santa Inês x ½SPRD e ½Somalis x ½SPRD terminados em confinamento no semiárido do Nordeste brasileiro. Avaliou-se amostras provenientes de 24 animais, sendo oito de cada genótipo. A dieta foi constituída de milho, farelo de trigo, farelo e óleo de soja contendo 2,8 Mcal de EM / kg de MS para todos os animais. Os animais foram desmamados entre 70 e 84 dias. A terminação durou 90 dias, quando foram abatidos e as carcaças levadas para uma câmara frigorífica a 4°C, por 24 horas. Após esse período, foram seccionados os músculos Longissimus dorsi, embalados a vácuo, identificados e armazenados a -20°C para avaliação dos atributos sensoriais. Não foi observada diferença (p>0,05) nos parâmetros suculência, aroma e sabor. Em contrapartida, a dureza e aceitação global apresentaram diferenças estatísticas (p<0,05) entre os grupos, evidenciando que o genótipo influencia os atributos da carne de cordeiros indicando um produto com características sensoriais diferenciadas

Características físico-químicas e sensoriais da carne de cordeiros de diferentes genótipos terminados em confinamento.

Avaliou-se com este estudo a influência de diferentes genótipos sobre a composição centesimal, perda de peso por cocção e qualidade sensorial da carne de cordeiros meio sangue obtidos por cruzas entre animais Sem Padrão Racial Definido com Dorper, Santa Inês e Somalis terminados em confinamento no semiárido nordestino. Foram avaliadas amostras provenientes de 24 animais, oito de cada genótipo. A dieta foi constituída de milho, farelo de trigo, farelo e óleo de soja e continha 2,8Mcal de EM/kg de MS para todos os animais. Os animais foram desmamados entre 70 e 84 dias. A terminação durou 90 dias, quando foram abatidos e as carcaças mantidas em uma câmara frigorífica a 4°C, por 24 horas. Após esse período, foram seccionados os músculos Longissimus dorsi, embalados a vácuo, identificados e armazenados a -20°C para análises da composição centesimal, perda de peso por cocção e avaliação das características sensoriais. Não foi observada diferença nos percentuais de proteínas, lipídios, cinzas e nos parâmetros suculência, aroma e sabor. Em contrapartida, o teor de umidade, a perda de peso por cocção, a dureza e aceitação global apresentaram diferenças estatísticas entre os grupos, o que evidencia a influência do genótipo sobre os atributos da carne de cordeiros, e isto confere ao produto características sensoriais diferenciadas. The aim of this study was to evaluate the influence of different genotypes on the proximate composition, weight loss due to cooking, and sensory quality of lamb meat from half-blooded lambs obtained by crosses between undefined breed animals with Dorper, Santa Inês and Somalis feedlot finished in the northeastern semiarid region of Brazil. Samples from 24 animals were evaluated, eight from each genotype. The diet consisted of corn, wheat bran, soybean bran and oil, containing 2.8Mcal EM/kg of DM for all animals. The animals were weaned between 70 and 84 days of age. The termination lasted 90 days, when they were slaughtered and the carcasses brought to a cold room at 4°C for 24 hours. After this period, the Longissimus dorsi muscles were sectioned, vacuum packaged, identified and stored at -20°C for analysis of the proximal composition, weight loss due to cooking, and evaluation of sensory attributes. No difference was observed in the percentage of protein, fat, ash and parameters succulence, aroma and flavor. In contrast, the moisture content, weight loss due to cooking, hardness and overall acceptability showed statistical differences between groups, suggesting that the genotype would have influenced the lamb meat attributes, indicating a product with differentiated sensory characteristics

ESTIMATION OF BALLISTIC PARAMETERS OF GUN PROPELLANTS THROUGH CLOSED VESSEL EXPERIMENT MODELING

Closed vessels have being used for the regression of lumped ballistic parameters for decades. However, if material and energy balances are coupled with burning rate empirical correlations, several uncorrelated parameters can be estimated, which describe more accurately the thermochemical behavior of the gases generated, even if the chemical composition of the propellant is unknown (as when the propellant is aged, for instance). This research presents such approach leading to a system of differential equations which are integrated to produce a theoretical pressure profile in the vessel, highly dependent on the choice of empirical parameters. Such parameters are manipulated according to the Maximum Likelihood statistical procedure, which leads to the best set of parameters to describe the propellant

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

This paper presents measurements of the $W^+ \rightarrow \mu^+\nu$ and $W^- \rightarrow \mu^-\nu$ 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

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

Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente