Observation of two new Ξb−\Xi_b^- baryon resonances

Two structures are observed close to the kinematic threshold in the $\Xi_b^0 \pi^-$ mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$ recorded by the LHCb experiment. In the quark model, two baryonic resonances with quark content $bds$ are expected in this mass region: the spin-parity $J^P = \frac{1}{2}^+$ and $J^P=\frac{3}{2}^+$ states, denoted $\Xi_b^{\prime -}$ and $\Xi_b^{*-}$. Interpreting the structures as these resonances, we measure the mass differences and the width of the heavier state to be $m(\Xi_b^{\prime -}) - m(\Xi_b^0) - m(\pi^{-}) = 3.653 \pm 0.018 \pm 0.006$ MeV$/c^2$, $m(\Xi_b^{*-}) - m(\Xi_b^0) - m(\pi^{-}) = 23.96 \pm 0.12 \pm 0.06$ MeV$/c^2$, $\Gamma(\Xi_b^{*-}) = 1.65 \pm 0.31 \pm 0.10$ MeV, where the first and second uncertainties are statistical and systematic, respectively. The width of the lighter state is consistent with zero, and we place an upper limit of $\Gamma(\Xi_b^{\prime -}) < 0.08$ MeV at 95% confidence level. Relative production rates of these states are also reported.Comment: 17 pages, 2 figure

Precision measurement of CPCP violation in Bs0→J/ψK+K−B_s^0 \to J/\psi K^+K^- decays

The time-dependent $CP$ asymmetry in $B_s^0 \to J/\psi K^+K^-$ decays is measured using $pp$ collision data, corresponding to an integrated luminosity of $3.0$fb$^{-1}$, collected with the LHCb detector at centre-of-mass energies of $7$ and $8$TeV. In a sample of 96 000 $B_s^0 \to J/\psi K^+K^-$ decays, the $CP$-violating phase $\phi_s$ is measured, as well as the decay widths $\Gamma_{L}$ and $\Gamma_{H}$ of the light and heavy mass eigenstates of the $B_s^0-\bar{B}_s^0$ system. The values obtained are $\phi_s = -0.058 \pm 0.049 \pm 0.006$ rad, $\Gamma_s \equiv (\Gamma_{L}+\Gamma_{H})/2 = 0.6603 \pm 0.0027 \pm 0.0015$ps$^{-1}$, and$\Delta\Gamma_s \equiv \Gamma_{L} - \Gamma_{H} = 0.0805 \pm 0.0091 \pm 0.0032$ps$^{-1}$, where the first uncertainty is statistical and the second systematic. These are the most precise single measurements of those quantities to date. A combined analysis with $B_s^{0} \to J/\psi \pi^+\pi^-$ decays gives $\phi_s = -0.010 \pm 0.039$rad. All measurements are in agreement with the Standard Model predictions. For the first time the phase $\phi_s$ is measured independently for each polarisation state of the $K^+K^-$ system and shows no evidence for polarisation dependence.Comment: 6 figure

Approaches in biotechnological applications of natural polymers

Natural polymers, such as gums and mucilage, are biocompatible, cheap, easily available and non-toxic materials of native origin. These polymers are increasingly preferred over synthetic materials for industrial applications due to their intrinsic properties, as well as they are considered alternative sources of raw materials since they present characteristics of sustainability, biodegradability and biosafety. As definition, gums and mucilages are polysaccharides or complex carbohydrates consisting of one or more monosaccharides or their derivatives linked in bewildering variety of linkages and structures. Natural gums are considered polysaccharides naturally occurring in varieties of plant seeds and exudates, tree or shrub exudates, seaweed extracts, fungi, bacteria, and animal sources. Water-soluble gums, also known as hydrocolloids, are considered exudates and are pathological products; therefore, they do not form a part of cell wall. On the other hand, mucilages are part of cell and physiological products. It is important to highlight that gums represent the largest amounts of polymer materials derived from plants. Gums have enormously large and broad applications in both food and non-food industries, being commonly used as thickening, binding, emulsifying, suspending, stabilizing agents and matrices for drug release in pharmaceutical and cosmetic industries. In the food industry, their gelling properties and the ability to mold edible films and coatings are extensively studied. The use of gums depends on the intrinsic properties that they provide, often at costs below those of synthetic polymers. For upgrading the value of gums, they are being processed into various forms, including the most recent nanomaterials, for various biotechnological applications. Thus, the main natural polymers including galactomannans, cellulose, chitin, agar, carrageenan, alginate, cashew gum, pectin and starch, in addition to the current researches about them are reviewed in this article.. }To the Conselho Nacional de Desenvolvimento Cientfíico e Tecnológico (CNPq) for fellowships (LCBBC and MGCC) and the Coordenação de Aperfeiçoamento de Pessoal de Nvíel Superior (CAPES) (PBSA). This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the strategic funding of UID/BIO/04469/2013 unit, the Project RECI/BBB-EBI/0179/2012 (FCOMP-01-0124-FEDER-027462) and COMPETE 2020 (POCI-01-0145-FEDER-006684) (JAT)

A percepção da família sobre sua presença em uma Unidade de Terapia Intensiva Pediátrica e Neonatal

O estudo, de abordagem qualitativa, teve por objetivo compreender como as famílias percebem a própria presença na unidade de terapia intensiva pediátrica e neonatal, e a aceitação dessa presença por parte dos profissionais de saúde. Os dados foram coletados por meio de entrevista semiestruturada a 14 pais de crianças internadas na UTI pediátrica e neonatal de dois hospitais na Região Noroeste do Paraná. Para a interpretação dos dados, optou-se pela análise de conteúdo. Os resultados revelaram o sofrimento vivenciado pelos pais, as alterações que ocorreram na dinâmica familiar em face da hospitalização do filho, e a percepção dos benefícios da sua permanência junto à criança, do acolhimento e dos cuidados recebidos. Concluiu-se que os pais valorizam o fato de os profissionais demonstrarem respeito e atenção para com eles e a criança, criando elos de afetividade e confiança, além de gratidão pelo cuidado.Este estudio, de abordaje cualitativo, tuvo por objetivo comprender como las familias perciben su propia presencia en la unidad de terapia intensiva pediátrica y neonatal, y, la aceptación de esa presencia por parte de los profesionales de la salud. Los datos fueron recolectados por medio de entrevista semiestructurada a 14 padres de niños internados en la UTI pediátrica y neonatal de dos hospitales en la Región Noroeste de Paraná. Para la interpretación de los datos se optó por el análisis de contenido. Los resultados revelaron el sufrimiento experimentado por los padres, las alteraciones que ocurrieron en la dinámica familiar frente a la hospitalización del hijo y la percepción de los beneficios de su permanencia junto al niño, del acogimiento y del cuidado recibidos. Se concluyó que los padres valorizan el hecho de los profesionales demonstrar respeto y atención para con ellos y el niño, creando vínculos de afecto y confianza, además de gratitud por el cuidado.This qualitative-based study aimed to understand how families perceive their own presence at the Pediatric and Neonatal Intensive Care Unit, as well as the acceptance of their presence by healthcare workers. Data was collected through semi-structured interviews with 14 parents of children admitted to the pediatric and neonatal ICU at two hospitals in northwestern Paraná State, Brazil. Content analysis was chosen to interpret the data. The results revealed the suffering experienced by parents, the alteration of family dynamics resulting from the child's hospitalization, and the perception of the benefits of remaining close to the child in terms of welcoming and quality of care. It was concluded that parents value the professionals' respect and attention towards the child, thus creating bonds of affection, trust and gratitude for the care received

A PARTICIPAÇÃO DA FAMÍLIA NA SEGURANÇA DO PACIENTE EM UNIDADES NEONATAIS NA PERSPECTIVA DO ENFERMEIRO

Objetivo : comprender la influencia de la participación familiar en la seguridad del paciente en las unidades neonatales en la perspectiva de las enfermeras. Método : estudio descriptivo de enfoque cualitativo, realizado en la unidad de cuidados intermedios y neonatal intensive en una maternidad pública en Belo Horizonte-MG (Brazil), con 14 enfermeras como sujetos de investigación. Los datos fueron recolectados a través de scripts semiestructuradas y sometidos a análisis de contenido temático. Resultados : las enfermeras reconocen la participación de la familia en la seguridad del paciente neonatal, pero mostraron poca comprensión y sin preparación para hacer frente a esta familia en el trabajo diario. Mejor recepción y orientación de miembros de la familia fueron identificados como estrategia para el seguro de cuidado. Conclusiones : se cree que la combinación de la familia como socios críticos y activos en las prácticas profesionales de la salud dirigidas a la implementación de las prácticas de seguridad, es una estrategia importante y prometedora para promover la salud y la seguridad de los pacientes

Instrumentos de avaliação do aleitamento materno e seu uso na prática clínica

RESUMO Objetivos Identificar instrumentos de avaliação da amamentação e sua aplicação na prática clínica, validação e adaptação transcultural. Método Revisão integrativa, realizada em seis bases de dados e em uma biblioteca eletrônica, entre agosto/2014-dezembro/2015, sem limitação temporal. Resultados Foram identificados 19 instrumentos de avaliação do AM. Destes, 12 foram validados e cinco foram adaptados transculturalmente. Quanto à aplicação, destacam-se seu uso para a avaliação do risco de desmame (BAPT) e a percepção/comportamento da mulher em amamentar (BSES-SF e IIFAS). Conclusão A identificação dos instrumentos disponíveis e de suas indicações para a avaliação do AM pode auxiliar profissionais na escolha pelo instrumento a ser utilizado, qualificando a assistência materno-infantil

Measurement of the Z+b-jet cross-section in pp collisions at √s = 7 TeV in the forward region

The associated production of a Z boson or an off-shell photon γ ∗ with a bottom quark in the forward region is studied using proton-proton collisions at a centre-of-mass energy of 7 TeV. The Z bosons are reconstructed in the Z/γ∗ → µ +µ − final state from muons with a transverse momentum larger than 20 GeV, while two transverse momentum thresholds are considered for jets (10 GeV and 20 GeV). Both muons and jets are reconstructed in the pseudorapidity range 2.0 &#60; η &#60; 4.5. The results are based on data corresponding to 1.0 fb−1 recorded in 2011 with the LHCb detector. The measurement of the Z+b-jet cross-section is normalized to the Z+jet cross-section. The measured cross-sections are σ(Z/γ∗ (µ +µ −) + b-jet) = 295 ± 60 (stat) ± 51 (syst) ± 10 (lumi) fb (0.1) for pT(jet) &#62; 10 GeV, and σ(Z/γ∗ (µ +µ −) + b-jet) = 128 ± 36 (stat) ± 22 (syst) ± 5 (lumi) fb (0.2) for pT(jet) &#62; 20 GeV