1,541 research outputs found

    A importância dos estudos sobre interiorização da universidade e reestruturação territorial

    Get PDF
    A investigação em curso visa reconhecer a dinâmica espacial da interiorização da universidade pública no Estado do Rio de Janeiro (RJ), destacando os aspectos políticos e sociais que cercam tal processo. Se a interiorização em tela está ligada aos novos padrões de organização da indústria e do urbano no século XXI, isto não significa, no entanto, que podemos relacioná-la somente a políticas de reestruturação territorial.La recherche en cours vise à reconnaître la dynamique spatiale de l’intériorisation de l’université publique dans l’État de Rio de Janeiro (RJ), en soulignant les traits politiques et sociaux autour de ce processus. Si l’intériorisation en question est liée aux nouveaux modèles d’organisation urbaine et industrielle au XXIe siècle, cela ne signifie pas pourtant qu’on puisse l’associer seulement aux politiques de restructuration territoriale.This research aims to recognize the spatial dynamics of internalization of the public university in the state of Rio de Janeiro (RJ), analyzing the social and political aspects of this process. If this internalization is linked to new patterns of organization of industry and urban in the 21st century, this does not mean that we can relate it only to policies of territorial restructuring.Esta investigación tiene como objetivo reconocer la dinámica espacial de la internalización de la universidad pública en el estado de Rio de Janeiro (RJ), en sus aspectos políticos y sociales. Si esta internalización está vinculada a los nuevos patrones de organización de la industria y urbana en el siglo XXI, esto no significa que podamos relacionarlo únicamente con las políticas de reestructuración territorial

    Physiological maturation of sweet sorghum seeds produced under water restriction

    Get PDF
    ABSTRACT Sweet sorghum has been shown to be an alternative for ethanol production in several regions. Because it is sexually propagated, the use of quality seeds becomes an important factor for obtaining an adequate plant stand and, consequently, good productivity. Thus, the objective was to evaluate the production and physiological maturation of seeds of sweet sorghum cv. BRS 511, in response to the interval between irrigations during the reproductive period and harvesting period. Two experiments were carried out in a greenhouse, the experimental design adopted was in randomized blocks, with four replications in a 3 x 2 split-plot scheme, corresponding to three intervals between irrigations during the reproductive stage (0; 4 and 8 days) and two harvest times (102 and 110 days after sowing). The following parameters were evaluated from the harvested panicles: number of seeds, weight of one thousand seeds, water content, germination, first germination count, emergence in sand and emergence speed, electrical conductivity and seedling vigor. The production of seeds per panicle and the weight of a thousand seeds were significantly influenced by the increase in the interval between irrigations in the 2nd experiment, with a reduction of 50.4 and 46.3%, respectively. Water replacement every eight days caused a reduction of up to 43.4% in the first germination count and 16.3% in germination. The production and quality of sweet sorghum seeds reduces as a function of the increase in the interval between irrigations and the harvesting time, presenting germination rates below the required for commercialization

    Análise comparativa das abordagens cirúrgicas no tratamento de cardiopatias

    Get PDF
    Em análise a evolução histórica e as inovações na cirurgia cardíaca, este estudo objetiva analisar comparativamente as abordagens cirúrgicas no tratamento de cardiopatias, destacando a transição das técnicas tradicionais de cirurgia aberta para métodos minimamente invasivos como a videolaparoscopia e a cirurgia robótica. Para tanto, procede-se à uma revisão narrativa da literatura, explorando uma gama extensiva de estudos e relatos científicos que ilustram os avanços tecnológicos e seus impactos nos resultados clínicos. Desse modo, observa-se que as técnicas minimamente invasivas oferecem benefícios substanciais, como redução no tempo de recuperação, diminuição do trauma cirúrgico, e menores taxas de complicações e mortalidade perioperatória em comparação com a cirurgia aberta. Estes resultados permitem concluir que a cirurgia minimamente invasiva representa um avanço significativo na prática cardiológica, proporcionando procedimentos mais seguros e eficazes, com menor impacto para os pacientes e melhores prognósticos a longo prazo. Para futuras pesquisas, sugere-se o aprofundamento na análise dos resultados a longo prazo e na integração de novas tecnologias, como inteligência artificial e realidade aumentada, para otimizar ainda mais as práticas cirúrgicas e expandir as possibilidades de tratamento das cardiopatias

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

    Get PDF
    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

    Full text link
    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for new physics with dijet angular distributions in proton-proton collisions at root S = 13 TeV

    Get PDF
    Peer reviewe

    Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 TeV and combination with 8 TeV data

    Get PDF
    Peer reviewe

    Search for leptophobic Z ' bosons decaying into four-lepton final states in proton-proton collisions at root s=8 TeV

    Get PDF
    Peer reviewe

    Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at root s=8 TeV

    Get PDF
    Peer reviewe

    Pseudorapidity distributions of charged hadrons in proton-lead collisions at root s(NN)=5:02 and 8.16 TeV

    Get PDF
    The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies root s(NN) = 5.02 and 8.16 TeV are presented. The measurements are based on data samples collected by the CMS experiment at the LHC. The number of primary charged hadrons produced in non-single-diffractive proton-lead collisions is determined in the pseudorapidity range vertical bar eta(lab)vertical bar vertical bar(vertical bar eta cm vertical bar) <0.5 are 17.1 +/- 0.01 (stat) +/- 0.59 (syst) and 20.10 +/- 0.01 (stat) +/- 0.5(syst) at root s(NN) = 5.02 and 8.16 TeV, respectively. The particle densities per participant nucleon are compared to similar measurements in proton-proton, proton-nucleus, and nucleus-nucleus collisions.Peer reviewe
    corecore