Processo de institucionalização da pessoa idosa : um olhar comparativo entre uma instituição pública e privada

A estrutura demográfica das sociedades contemporâneas é indubitavelmente marcada pelo envelhecimento demográfico, tornando-se um fenómeno social que provocou profundas alterações em diversas dimensões do social. Com o presente trabalho procuramos dar resposta à seguinte pergunta de partida: "Existirão diferenças entre Lares Públicos e Privados no que respeita à institucionalização da pessoa idosa?". Partimos do contexto institucional de dois lares de idosos de forma a verificar se existem diferenças entre as mesmas no que concerne às dinâmicas subjacentes à institucionalização do idoso, tendo em vista a promoção da qualidade de vida em meio institucional. No que respeita às questões metodológicas, fizemos o nosso estudo numa instituição pública e numa instituição privada, cujo público-alvo é a população idosa. Privilegiamos uma metodologia qualitativa com vista à análise em profundidade desta realidade em particular. Com o presente trabalho concluímos que, efectivamente, existem significativas diferenças entre as instituições no que respeita ao processo de institucionalização da pessoa idosa. Verificamos também que é distinta a vivência da institucionalização pelo idoso e que isso condiciona a promoção da qualidade de vida em contexto institucional. Ao nível institucional observamos alguns desafios quanto à promoção de mais e melhor qualidade de vida dos idosos institucionalizados, sendo que consideramos que tal deve exigir uma aposta em estratégias futuras

Análise de crescimento em plântulas de arroz em função do tratamento de sementes com nutrientes minerais

The objective of this study was to evaluate the initial growth in seedling rice in relation of the seed treatment with nutrients applied before planting. The experiment was conducted at the Federal University of Tocantins - Campus Gurupi in a randomized block design with three replications, evaluating the Metica variety rice with three seed treatments in six harvest times. The treatments were: 1 - control without application of mineral elements; 2 - application of zinc, boron, molybdenum and sulfur (concentration of 182.4, 7.6, 45.6 and 83.6 g/l, respectably); 3 - application of zinc and boron concentration of 350 and 20 g/kg, respectably). The evaluations were at 6, 10, 14, 18, 22 and 27days after emergence. Seed treatment with nutrients increased growth and vigor of rice in the initial phase of the cycle. The rate of increase of rice plants were influenced by seed treatment, where the combination of Zn+B+S+Mb showed the best results, favoring the growth, mainly, of the root system of plants.O objetivo do trabalho foi avaliar o crescimento inicial em plântulas de arroz em função do tratamento das sementes com nutrientes minerais. O experimento foi desenvolvido na Universidade Federal do Tocantins – Campus de Gurupi, em delineamento de blocos ao acaso com três repetições, avaliando-se a cultivar de arroz Metica com três tratamentos de semente, em seis épocas de coleta. Os tratamentos foram: (tratamento 1) testemunha sem aplicação de elementos minerais; (tratamento 2) aplicação de zinco (182,4 g/l), boro (7,6 g/l), molibdênio (45,6 g/l) e enxofre (83,6 g/l); e (tratamento 3) aplicação de 350 g/kg de zinco e 20 g/kg de boro. As coletas foram aos 6, 10, 14, 18, 22 e 27 dias após a emergência. Os tratamentos de sementes com nutrientes incrementaram o crescimento e vigor de plantas de arroz na fase inicial do ciclo. As taxas de incremento das plantas de arroz foram influenciadas pelo tratamento de sementes, onde a combinação de Zn+B+Mb+S apresentou os melhores resultados favorecendo, principalmente, o crescimento do sistema radicular das plantas

Corn Seedlings Have Tolerance to Water Deficit

The present work aimed to evaluate the germination and seedling growth of two corn cultivars under water deficit conditions induced with manitol solutions, associated with doses of humic substances. The experiment was carried out at the Seed Laboratory of the Federal University of Tocantins - UFT, in Gurupi, Tocantins. Seeds of two cultivars were used: M274 and UFT Cerrado; and the product based on humic substances: Humix. For each cultivar, the factorial experiment (5×3) was mounted in a completely randomized design, and the treatments were composed of five osmotic potentials, with three doses of Humix. Germination percentage, primary root and epicotyl length, seedling dry mass and absolute growth rate were evaluated. The results were submitted to the F test by analysis of variance with probability of 5%, and when the effect of the doses was significant, the data were submitted to regression analysis. It is concluded that the biostimulant Humix had no expressive effect on germination and that the reduction of osmotic potential does not affect germination itself, but affects seedling growth, as osmotic potential becomes more negative

Search for the standard model Higgs boson produced in association with top quarks and decaying into a bbˉb\bar{b} pair in pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector

A search for the standard model Higgs boson produced in association with a top-quark pair, tt¯H, is presented. The analysis uses 36.1  fb-1 of pp collision data at s=13  TeV collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The search targets the H→bb¯ decay mode. The selected events contain either one or two electrons or muons from the top-quark decays, and are then categorized according to the number of jets and how likely these are to contain b-hadrons. Multivariate techniques are used to discriminate between signal and background events, the latter being dominated by tt¯+jets production. For a Higgs boson mass of 125 GeV, the ratio of the measured tt¯H signal cross-section to the standard model expectation is found to be μ=0.84-0.61+0.64. A value of μ greater than 2.0 is excluded at 95% confidence level (C.L.) while the expected upper limit is μ<1.2 in the absence of a tt¯H signal.Peer Reviewe

Performance of the ATLAS Track Reconstruction Algorithms in Dense Environments in LHC Run 2

With the increase in energy of the Large Hadron Collider to a centre-of-mass energy of 13  $\text {TeV}$ for Run 2, events with dense environments, such as in the cores of high-energy jets, became a focus for new physics searches as well as measurements of the Standard Model. These environments are characterized by charged-particle separations of the order of the tracking detectors sensor granularity. Basic track quantities are compared between 3.2 fb$^{-1}$ of data collected by the ATLAS experiment and simulation of proton–proton collisions producing high-transverse-momentum jets at a centre-of-mass energy of 13  $\text {TeV}$ . The impact of charged-particle separations and multiplicities on the track reconstruction performance is discussed. The track reconstruction efficiency in the cores of jets with transverse momenta between 200 and 1600 $\text {GeV}$ is quantified using a novel, data-driven, method. The method uses the energy loss, ${\text { d}}{} \textit{E}/d\textit{x}$ , to identify pixel clusters originating from two charged particles. Of the charged particles creating these clusters, the measured fraction that fail to be reconstructed is $0.061 \pm 0.006\ {\text {(stat.)}} \pm 0.014\ {\text {(syst.)}}$ and $0.093 \pm 0.017\ {\text {(stat.)}}\pm 0.021\ {\text {(syst.)}}$ for jet transverse momenta of 200–400  $\text {GeV}$ and 1400–1600  $\text {GeV}$ , respectively.Peer Reviewe

Measurement of the cross section for isolated-photon plus jet production in pppp collisions at s=13\sqrt s=13 TeV using the ATLAS detector

The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb −1 . Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti- kt algorithm with radius parameter R=0.4 and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon–jet invariant mass and the scattering angle in the photon–jet centre-of-mass system. Tree-level plus parton-shower predictions from Sherpa and Pythia as well as next-to-leading-order QCD predictions from Jetphox and Sherpa are compared to the measurements.Peer Reviewe

Measurements of ttˉt\bar{t} differential cross-sections of highly boosted top quarks decaying to all-hadronic final states in pppp collisions at s=13 \sqrt{s}=13\, TeV using the ATLAS detector

Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and tt¯ system kinematic observables using proton-proton collisions at a center-of-mass energy of s=13  TeV. The data set corresponds to an integrated luminosity of 36.1  fb-1, recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Events with two large-radius jets in the final state, one with transverse momentum pT>500  GeV and a second with pT>350  GeV, are used for the measurement. The top-quark candidates are separated from the multijet background using jet substructure information and association with a b-tagged jet. The measured spectra are corrected for detector effects to a particle-level fiducial phase space and a parton-level limited phase space, and are compared to several Monte Carlo simulations by means of calculated χ2 values. The cross-section for tt¯ production in the fiducial phase-space region is 292±7(stat)±71(syst)  fb, to be compared to the theoretical prediction of 384±36  fb.Peer Reviewe

Measurement of charged-particle distributions sensitive to the underlying event in s=13 \sqrt{s}=13 TeV proton-proton collisions with the ATLAS detector at the LHC

We present charged-particle distributions sensitive to the underlying event, measured by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV, in low-luminosity Large Hadron Collider fills corresponding to an integrated luminosity of 1.6 nb$^{−1}$. The distributions were constructed using charged particles with absolute pseudorapidity less than 2.5 and with transverse momentum greater than 500 MeV, in events with at least one such charged particle with transverse momentum above 1 GeV. These distributions characterise the angular distribution of energy and particle flows with respect to the charged particle with highest transverse momentum, as a function of both that momentum and of charged-particle multiplicity. The results have been corrected for detector effects and are compared to the predictions of various Monte Carlo event generators, experimentally establishing the level of underlying-event activity at LHC Run 2 energies and providing inputs for the development of event generator modelling. The current models in use for UE modelling typically describe this data to 5% accuracy, compared with data uncertainties of less than 1%.Peer Reviewe

Measurements of top-quark pair differential cross-sections in the eμe\mu channel in pppp collisions at s=13\sqrt{s} = 13 TeV using the ATLAS detector

This article presents measurements of $t\bar{t}$ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb$^{-1}$ of proton–proton data at a centre-of-mass energy of $\sqrt{s} = 13$  TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the $t\bar{t}$ system. The $t\bar{t}$ events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a b-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the Powheg-Box $+$ Herwig++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the $t\bar{t}$ system.Peer Reviewe