420 research outputs found

    DimensÔes, massa e volume do baço em tartarugas (Trachemys scrypta elegans, Wied,1839)

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    The purpose of this study was to stabilish the spleen dimensions (lenght, width e thickness), mass and volume of turtle (Trachemys scripta elegans WIED, 1839). We used twenty animals from Instituto de Psicologia of Universidade de São Paulo, collected after euthanasia and were taken to the Anatomy Laboratory of the Faculdade de Medicina Veterinåria e Zootecnia at the same university. The corporal mass, volume and dimensions of the animals were taken. Then, the carapace was deduct and the spleen was removed for measurements. Despite the animals have been raised in the same place, under the same environment conditions and have been slaughtered at the same period of the year, we noticed that there isnŽt any correlation between the spleen dimensions and the corporal dimensions, where, smaller animals can show their spleens in larger dimensions than big turtles, at the depends of individual conditions.O objetivo deste estudo foi verificar as dimensÔes, massa e volume do baço em tartarugas (Trachemys scripta elegans WIED, 1839) estabelecendo correlação com as dimensÔes, massa e volume corporais. Para a confecção deste trabalho, utilizou-se vinte animais, provenientes do Instituto de Psicologia da Universidade de São Paulo, coletados após a eutanåsia que, levados ao Laboratório de Anatomia da Faculdade de Medicina Veterinåria e Zootecnia da mesma universidade, tiveram suas dimensÔes, massa e volume corporais aferidos. Então, retirou-se o plastrão, expondo sua cavidade celomåtica, removendo o baço para realizar as mensuraçÔes. Apesar dos animais terem sido criados num mesmo ambiente, sob as mesmas condiçÔes ambientais e abatidos no mesmo período do ano, concluiu-se que não hå correlação entre as dimensÔes do baço e as dimensÔes corporais, onde, animais menores podem apresentar o baço com maiores proporçÔes do que tartarugas maiores, variando conforme as condiçÔes individuais - fato que ocorre com as demais espécies animais

    Participação dos nervos intercostais na inervação do diafragma de gatos (Felis catus, Linnaeus, 1758)

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    O objetivo do presente trabalho foi avaliar a inervação do mĂșsculo diafragma em gatos, proveniente dos nervos intercostais, contradizendo diversos autores que afirmam ser este mĂșsculo inervado apenas pelos ramos dos nervos frĂȘnicos direito e esquerdo. Foi observado que existe a frequĂȘncia de nervos dispostos entre o 8Âș e o 11Âș espaços intercostais.The knowledge of organism's anatomy is essential to conduct any experiment or study with itself. Based on that, we decided to analyze and study in details the innervation of the diaphragm muscle from intercostal nerves in cats. It goes beyond other authors' analysis that describes only the innervation from phrenic nerves. Despite we have got a range of results, we observed a major frequency of eighth to tenth intercostal nerves going to diaphragm muscle

    Desafio anatĂŽmico: uma metodologia capaz de auxiliar no aprendizado de anatomia humana

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    In 2007 the city of Cajazeiras-PB received the implantation of the School of Medicine from Federal University of Campina Grande. In this process professors were faced with several difficulties. To propose improvements and even supplementation in Anatomy concepts, they created a didactic activity called “Anatomical Challenge” in which the students were instructed to fabricate didactical anatomical models to be used in classrooms, helping the content of the discipline. After work, the students were satisfied with the results, especially from the point of view of knowledge transmission and absorption of content. Thus, this experience was positive and unique to the process of teaching and learning of anatomy in medical school, because it stimulated creativity in many ways, memory and group working by the participants.Em 2007 a cidade de Cajazeiras-PB recebeu a implantação do curso de Medicina pela Universidade Federal de Campina Grande. Neste processo, os docentes se depararam com vĂĄrias dificuldades. Para propor melhoras e atĂ©, suplementação da carga de conceitos em Anatomia Humana, foi criada uma atividade didĂĄtica chamada “Desafio AnatĂŽmico”, no qual os discentes eram instruĂ­dos a confeccionar modelos anatĂŽmicos que fossem didĂĄticos a ponto de serem usados nas aulas, auxiliando o conteĂșdoda disciplina. ApĂłs a apresentação dos trabalhos, os discentes mostraram-se satisfeitos com os resultados, sobretudo sob o ponto de vista de transmissĂŁo de conhecimento e absorção de conteĂșdo. Desta maneira, esta experiĂȘncia mostrou-se positiva e singular para o processo de ensino-aprendizagem da anatomia no curso mĂ©dico, pois a mesma estimulou de diversas formas a criatividade, memĂłria e trabalho em grupo dos participantes

    Avaliação quantitativa e morfométrica dos neurÎnios mioentéricos da região aglandular do estÎmago de ratos com diabetes mellitus induzido por estreptozootocina e suplementados com åcido ascórbico

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    O presente trabalho teve como objetivos investigar possveis alteraes no nmero e a rea do corpo celulardos neurnios mioentricos NADH-diaforase reativos (NADH-dr) da regio aglandular do estmago de ratos diabticos eo efeito da suplementao com AA (1g/L de gua) nos referidos parmetros. Para tanto, 15 ratos (Rattus norvegicus) foramseparados em trs grupos (n = 5): controle (C); diabtico (D); e diabtico suplementado com AA (DS). O DM foi induzido porestreptozootocina (35 mg/kg de peso corporal). Aps 120 dias de experimento, os animais foram anestesiados para obtenodo estmago. Os neurnios mioentricos foram evidenciados pelo mtodo da NADH-diaforase. Por meio de microscpiode luz foram contados os neurnios NADH-dr e, pelo programa computadorizado para anlise de imagens, foi mensurado operfi l do corpo celular (PCC) desses neurnios. O nmero de neurnios NADH-dr no variou signifi cativamente entre os trsgrupos estutados (P0,05). A mdia dos PCCs foi maior (P0,05) para os neurnios dos grupos D e DS do que para o grupoC. Ocorreu aumento na incidncia de neurnios com PCC superior a 200 m2 no grupo D quando comparada aos grupos DS eC. Os resultados sugerem que a suplementao com AA teve efeito neuroprotetor sobre os neurnios mioentricos NADH-drrepresentado pela diminuio da freqncia de neurnios grandes na regio aglandular A e B do grupo DS

    Les droits disciplinaires des fonctions publiques : « unification », « harmonisation » ou « distanciation ». A propos de la loi du 26 avril 2016 relative à la déontologie et aux droits et obligations des fonctionnaires

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    The production of tt‟ , W+bb‟ and W+cc‟ is studied in the forward region of proton–proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb experiment, corresponding to an integrated luminosity of 1.98±0.02 fb−1 . The W bosons are reconstructed in the decays W→ℓΜ , where ℓ denotes muon or electron, while the b and c quarks are reconstructed as jets. All measured cross-sections are in agreement with next-to-leading-order Standard Model predictions.The production of tt‟t\overline{t}, W+bb‟W+b\overline{b} and W+cc‟W+c\overline{c} is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb experiment, corresponding to an integrated luminosity of 1.98 ±\pm 0.02 \mbox{fb}^{-1}. The WW bosons are reconstructed in the decays W→ℓΜW\rightarrow\ell\nu, where ℓ\ell denotes muon or electron, while the bb and cc quarks are reconstructed as jets. All measured cross-sections are in agreement with next-to-leading-order Standard Model predictions

    Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era

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    The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHCb spectrometer. The LHCb Upgrade I will begin operation in 2020. Consolidation will occur, and modest enhancements of the Upgrade I detector will be installed, in Long Shutdown 3 of the LHC (2025) and these are discussed here. The main Upgrade II detector will be installed in long shutdown 4 of the LHC (2030) and will build on the strengths of the current LHCb experiment and the Upgrade I. It will operate at a luminosity up to 2×1034 cm−2s−1, ten times that of the Upgrade I detector. New detector components will improve the intrinsic performance of the experiment in certain key areas. An Expression Of Interest proposing Upgrade II was submitted in February 2017. The physics case for the Upgrade II is presented here in more depth. CP-violating phases will be measured with precisions unattainable at any other envisaged facility. The experiment will probe b → sl+l−and b → dl+l− transitions in both muon and electron decays in modes not accessible at Upgrade I. Minimal flavour violation will be tested with a precision measurement of the ratio of B(B0 → ÎŒ+Ό−)/B(Bs → ÎŒ+Ό−). Probing charm CP violation at the 10−5 level may result in its long sought discovery. Major advances in hadron spectroscopy will be possible, which will be powerful probes of low energy QCD. Upgrade II potentially will have the highest sensitivity of all the LHC experiments on the Higgs to charm-quark couplings. Generically, the new physics mass scale probed, for fixed couplings, will almost double compared with the pre-HL-LHC era; this extended reach for flavour physics is similar to that which would be achieved by the HE-LHC proposal for the energy frontier

    LHCb upgrade software and computing : technical design report

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    This document reports the Research and Development activities that are carried out in the software and computing domains in view of the upgrade of the LHCb experiment. The implementation of a full software trigger implies major changes in the core software framework, in the event data model, and in the reconstruction algorithms. The increase of the data volumes for both real and simulated datasets requires a corresponding scaling of the distributed computing infrastructure. An implementation plan in both domains is presented, together with a risk assessment analysis

    Measurement of the (eta c)(1S) production cross-section in proton-proton collisions via the decay (eta c)(1S) -> p(p)over-bar

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    The production of the ηc(1S)\eta_c (1S) state in proton-proton collisions is probed via its decay to the ppˉp \bar{p} final state with the LHCb detector, in the rapidity range 2.06.52.0 6.5 GeV/c. The cross-section for prompt production of ηc(1S)\eta_c (1S) mesons relative to the prompt J/ψJ/\psi cross-section is measured, for the first time, to be σηc(1S)/σJ/ψ=1.74±0.29±0.28±0.18B\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.74 \pm 0.29 \pm 0.28 \pm 0.18 _{B} at a centre-of-mass energy s=7\sqrt{s} = 7 TeV using data corresponding to an integrated luminosity of 0.7 fb−1^{-1}, and σηc(1S)/σJ/ψ=1.60±0.29±0.25±0.17B\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.60 \pm 0.29 \pm 0.25 \pm 0.17 _{B} at s=8\sqrt{s} = 8 TeV using 2.0 fb−1^{-1}. The uncertainties quoted are, in order, statistical, systematic, and that on the ratio of branching fractions of the ηc(1S)\eta_c (1S) and J/ψJ/\psi decays to the ppˉp \bar{p} final state. In addition, the inclusive branching fraction of bb-hadron decays into ηc(1S)\eta_c (1S) mesons is measured, for the first time, to be B(b→ηcX)=(4.88±0.64±0.25±0.67B)×10−3B ( b \rightarrow \eta_c X ) = (4.88 \pm 0.64 \pm 0.25 \pm 0.67 _{B}) \times 10^{-3}, where the third uncertainty includes also the uncertainty on the J/ψJ/\psi inclusive branching fraction from bb-hadron decays. The difference between the J/ψJ/\psi and ηc(1S)\eta_c (1S) meson masses is determined to be 114.7±1.5±0.1114.7 \pm 1.5 \pm 0.1 MeV/c2^2.The production of the ηc(1S)\eta _c (1S) state in proton-proton collisions is probed via its decay to the pp‟p\overline{p} final state with the LHCb detector, in the rapidity range 2.06.5 GeV/c2.0 6.5 \mathrm{{\,GeV/}{ c}} . The cross-section for prompt production of ηc(1S)\eta _c (1S) mesons relative to the prompt J/ψ{{ J}}/{\psi } cross-section is measured, for the first time, to be σηc(1S)/σJ/ψ=1.74 ± 0.29 ± 0.28 ± 0.18B\sigma _{\eta _c (1S)}/\sigma _{{{{ J}}/{\psi }}} = 1.74\, \pm \,0.29\, \pm \, 0.28\, \pm \,0.18 _{{\mathcal{B}}} at a centre-of-mass energy s=7 TeV{\sqrt{s}} = 7 {~\mathrm{TeV}} using data corresponding to an integrated luminosity of 0.7 fb−1^{-1} , and σηc(1S)/σJ/ψ=1.60±0.29±0.25±0.17B\sigma _{\eta _c (1S)}/\sigma _{{{{ J}}/{\psi }}} = 1.60 \pm 0.29 \pm 0.25 \pm 0.17 _{{\mathcal{B}}} at s=8 TeV{\sqrt{s}} = 8 {~\mathrm{TeV}} using 2.0 fb−1^{-1} . The uncertainties quoted are, in order, statistical, systematic, and that on the ratio of branching fractions of the ηc(1S)\eta _c (1S) and J/ψ{{ J}}/{\psi } decays to the pp‟p\overline{p} final state. In addition, the inclusive branching fraction of b{b} -hadron decays into ηc(1S)\eta _c (1S) mesons is measured, for the first time, to be B(b→ηcX)=(4.88 ± 0.64 ± 0.29 ± 0.67B)×10−3{\mathcal{B}}( b {\rightarrow } \eta _c X ) = (4.88\, \pm \,0.64\, \pm \,0.29\, \pm \, 0.67 _{{\mathcal{B}}}) \times 10^{-3} , where the third uncertainty includes also the uncertainty on the J/ψ{{ J}}/{\psi } inclusive branching fraction from b{b} -hadron decays. The difference between the J/ψ{{ J}}/{\psi } and ηc(1S)\eta _c (1S) meson masses is determined to be 114.7±1.5±0.1 MeV ⁣/c2114.7 \pm 1.5 \pm 0.1 {\mathrm {\,MeV\!/}c^2} .The production of the ηc(1S)\eta_c (1S) state in proton-proton collisions is probed via its decay to the ppˉp \bar{p} final state with the LHCb detector, in the rapidity range 2.06.52.0 6.5 GeV/c. The cross-section for prompt production of ηc(1S)\eta_c (1S) mesons relative to the prompt J/ψJ/\psi cross-section is measured, for the first time, to be σηc(1S)/σJ/ψ=1.74±0.29±0.28±0.18B\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.74 \pm 0.29 \pm 0.28 \pm 0.18 _{B} at a centre-of-mass energy s=7\sqrt{s} = 7 TeV using data corresponding to an integrated luminosity of 0.7 fb−1^{-1}, and σηc(1S)/σJ/ψ=1.60±0.29±0.25±0.17B\sigma_{\eta_c (1S)}/\sigma_{J/\psi} = 1.60 \pm 0.29 \pm 0.25 \pm 0.17 _{B} at s=8\sqrt{s} = 8 TeV using 2.0 fb−1^{-1}. The uncertainties quoted are, in order, statistical, systematic, and that on the ratio of branching fractions of the ηc(1S)\eta_c (1S) and J/ψJ/\psi decays to the ppˉp \bar{p} final state. In addition, the inclusive branching fraction of bb-hadron decays into ηc(1S)\eta_c (1S) mesons is measured, for the first time, to be B(b→ηcX)=(4.88±0.64±0.29±0.67B)×10−3B ( b \rightarrow \eta_c X ) = (4.88 \pm 0.64 \pm 0.29 \pm 0.67 _{B}) \times 10^{-3}, where the third uncertainty includes also the uncertainty on the J/ψJ/\psi inclusive branching fraction from bb-hadron decays. The difference between the J/ψJ/\psi and ηc(1S)\eta_c (1S) meson masses is determined to be 114.7±1.5±0.1114.7 \pm 1.5 \pm 0.1 MeV/c2^2

    Search for the lepton flavour violating decay tau(-) -> mu(-)mu(+)mu(-)

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    A search for the lepton flavour violating decay τ−→Ό−Ό+Ό−\tau^-\rightarrow\mu^-\mu^+\mu^- is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb−1^{−1} of proton-proton collisions at a centre-of-mass energy of 7 TeV and 2.0 fb−1^{−1} at 8 TeV. No evidence is found for a signal, and a limit is set at 90% confidence level on the branching fraction, B(τ−→Ό−Ό+Ό−)<4.6×10−8\mathcal{B}(\tau^-\rightarrow\mu^-\mu^+\mu^-)<4.6\times10^{−8}.A search for the lepton flavour violating decay τ−^{−} → Ό−^{−} ÎŒ+^{+} Ό−^{−} is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb−1^{−1} of proton-proton collisions at a centre-of-mass energy of 7 TeV and 2.0 fb−1^{−1} at 8 TeV. No evidence is found for a signal, and a limit is set at 90% confidence level on the branching fraction, B(τ−→Ό−Ό+Ό−)<4.6×10−8 \mathrm{\mathcal{B}}\left({\tau}^{-}\to {\mu}^{-}{\mu}^{+}{\mu}^{-}\right)<4.6\times {10}^{-8} .A search for the lepton flavour violating decay τ−→Ό−Ό+Ό−\tau^-\to \mu^-\mu^+\mu^- is performed with the LHCb experiment. The data sample corresponds to an integrated luminosity of 1.0 fb−11.0\mathrm{\,fb}^{-1} of proton-proton collisions at a centre-of-mass energy of 7 TeV7\mathrm{\,Te\kern -0.1em V} and 2.0 fb−12.0\mathrm{\,fb}^{-1} at 8 TeV8\mathrm{\,Te\kern -0.1em V}. No evidence is found for a signal, and a limit is set at 90%90\% confidence level on the branching fraction, B(τ−→Ό−Ό+Ό−)<4.6×10−8\mathcal{B}(\tau^-\to \mu^-\mu^+\mu^-) < 4.6 \times 10^{-8}

    Observation of the B0 → ρ0ρ0 decay from an amplitude analysis of B0 → (π+π−)(π+π−) decays

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    Proton–proton collision data recorded in 2011 and 2012 by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb−1 , are analysed to search for the charmless B0→ρ0ρ0 decay. More than 600 B0→(π+π−)(π+π−) signal decays are selected and used to perform an amplitude analysis, under the assumption of no CP violation in the decay, from which the B0→ρ0ρ0 decay is observed for the first time with 7.1 standard deviations significance. The fraction of B0→ρ0ρ0 decays yielding a longitudinally polarised final state is measured to be fL=0.745−0.058+0.048(stat)±0.034(syst) . The B0→ρ0ρ0 branching fraction, using the B0→ϕK⁎(892)0 decay as reference, is also reported as B(B0→ρ0ρ0)=(0.94±0.17(stat)±0.09(syst)±0.06(BF))×10−6
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