66 research outputs found
Alinhamento Da Produção Científica Do Programa De Pós-graduação Em Medicina Tropical Da Ufpe às Necessidades Sociais De Saúde Tropical Em Pernambuco
Evaluates the contribution of the scientific production of the UFPE Post-Graduation Program in Tropical Medicine (2004 to 2012) with the social needs in tropical health in the state of Pernambuco. For this, use as reference the State Health Plan (2012-2015) developed by the State Government of Pernambuco. On the methodological aspect, this study is characterized as descriptive, and used the Scientometry the basis for measuring whether the publications of permanent researchers from the UFPE Post-Graduation Program in Tropical Medicine were aligned to the problems outlined in the State Health Plan. The methodological steps were: a) data collection training and scientific production of the researchers in the Lattes Platform of CNPq; b) issue identification of scientific literature conducted by researchers involved and mapping of tropical diseases cited in the State Health Plan; c) construction and application of interviews with researchers through a questionnaire. As main results, it is clear that research motivations are: a) adjustment of production to research lines established by the Program, and b) the opportunity to provide benefits to society, noting as well that the motivations for carrying out the surveys are social, having little infiluence of the private sector. About the alignment of themes produced with social needs in Tropical Health in the state of Pernambuco, it turns out that the program has been expanding the tropical disease concept of scope for infectious diseases, and for this reason, HIV appears at the top of the most representative themes.26218519
Calagem e desenvolvimento radicular, nutrição e produção de laranja 'Valência' sobre porta-enxertos e sistemas de preparo do solo
O objetivo deste trabalho foi avaliar o efeito da calagem e de porta-enxertos sobre a quantidade de raízes, a nutrição e a produção de laranjeira 'Valência', em diferentes sistemas de preparo do solo. O experimento foi instalado em blocos ao acaso, com parcelas subsubdivididas e três repetições. As parcelas consistiram de dois sistemas de preparo do solo: convencional e com preparo mínimo. As subparcelas consistiram de níveis de calagem: com ou sem. As subsubparcelas consitiram de três porta-enxertos: limoeiro 'Cravo' (Citrus limonia), tangerineira 'Cleópatra' (Citrus reshni) e Poncirus trifoliata. O tratamento com calagem recebeu 3 Mg ha-1 de calcário dolomítico, antes da implantação, e 1,65 Mg ha-1 quatro anos após o plantio. A produção foi avaliada durante 12 anos; o teor de Ca e Mg nas folhas foram avaliados 13 anos após a implantação do experimento; e as raízes e as características químicas do solo, 14 anos após a implantação. O preparo de solo, e sua interação com os demais fatores, não influenciou as variáveis avaliadas. O limoeiro 'Cravo' adaptou-se melhor à acidez, ao Al e a menores teores de Ca e Mg no solo, e não respondeu ao tratamento com calagem. Poncirus trifoliata apresentou a pior adaptação à acidez do solo, com aumentos de 126% na quantidade de raízes e de 26,4% na produção de frutos em razão da calagem
Study of the lineshape of the chi(c1) (3872) state
A study of the lineshape of the chi(c1) (3872) state is made using a data sample corresponding to an integrated luminosity of 3 fb(-1) collected in pp collisions at center-of-mass energies of 7 and 8 TeV with the LHCb detector. Candidate chi(c1)(3872) and psi(2S) mesons from b-hadron decays are selected in the J/psi pi(+)pi(-) decay mode. Describing the lineshape with a Breit-Wigner function, the mass splitting between the chi(c1 )(3872) and psi(2S) states, Delta m, and the width of the chi(c1 )(3872) state, Gamma(Bw), are determined to be (Delta m=185.598 +/- 0.067 +/- 0.068 Mev,)(Gamma BW=1.39 +/- 0.24 +/- 0.10 Mev,) where the first uncertainty is statistical and the second systematic. Using a Flatte-inspired model, the mode and full width at half maximum of the lineshape are determined to be (mode=3871.69+0.00+0.05 MeV.)(FWHM=0.22-0.04+0.13+0.07+0.11-0.06-0.13 MeV, ) An investigation of the analytic structure of the Flatte amplitude reveals a pole structure, which is compatible with a quasibound D-0(D) over bar*(0) state but a quasivirtual state is still allowed at the level of 2 standard deviations
Measurement of the CKM angle in and decays with
A measurement of -violating observables is performed using the decays
and , where the meson is
reconstructed in one of the self-conjugate three-body final states and (commonly denoted ). The decays are analysed in bins of the -decay phase space, leading
to a measurement that is independent of the modelling of the -decay
amplitude. The observables are interpreted in terms of the CKM angle .
Using a data sample corresponding to an integrated luminosity of
collected in proton-proton collisions at centre-of-mass
energies of , , and with the LHCb experiment,
is measured to be . The hadronic
parameters , , , and ,
which are the ratios and strong-phase differences of the suppressed and
favoured decays, are also reported
Study of the doubly charmed tetraquark T+cc
Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D0D0π+ mass spectrum just below the D*+D0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar T+cc tetraquark with a quark content of ccu⎯⎯⎯d⎯⎯⎯ and spin-parity quantum numbers JP = 1+. Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D*+ mesons is consistent with the observed D0π+ mass distribution. To analyse the mass of the resonance and its coupling to the D*D system, a dedicated model is developed under the assumption of an isoscalar axial-vector T+cc state decaying to the D*D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the T+cc state. In addition, an unexpected dependence of the production rate on track multiplicity is observed
First measurement of the angular coefficients in the forward region of collisions at TeV
The first study of the angular distribution of pairs produced in the forward rapidity region via the Drell-Yan reaction is presented, using data collected with the LHCb detector at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.1 . The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the -boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton
First measurement of the angular coefficients in the forward region of collisions at TeV
International audienceThe first study of the angular distribution of pairs produced in the forward rapidity region via the Drell-Yan reaction is presented, using data collected with the LHCb detector at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.1 . The coefficients of the five leading terms in the angular distribution are determined as a function of the dimuon transverse momentum and rapidity. The results are compared to various theoretical predictions of the -boson production mechanism and can also be used to probe transverse-momentum-dependent parton distributions within the proton
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