Trajetos e Trajetórias na Horta Comunitária Lomba do Pinheiro

Um monge renunciante, uma cozinheira de mão cheia e duas líderes comunitárias: Radhanti Maharaj, Dona Tetê, Lurdes e Ana são algumas das trajetórias que compõem nossa etnofotografia rumo aos caminhos da Horta. As personagens, entretanto, são muitas, assim como são diversas as motivações que as levam ao espaço rururbano de agricultura comunitária e agroecológica. Os retratos aqui trazidos são uma forma de representar essa quantidade de histórias e de vidas perpassadas por saberes e fazeres como plantar, cultivar e colher. Ao sabor de um sopão ou um de chá de hibisco, o lugar serve para discutir a alimentação e a vida na comunidade, organizar eventos, fazer yoga. Mas mais que compartilhar mudas e sementes, o importante é compartilhar sorrisos e abraços, encontros e afetos. São tantas hortas na mesma horta, tantas facetas evocadas: um saber-fazer que é político, econômico, terapêutico, ecológico e afetivo. Nosso trabalho tem esse olhar: o olhar das pessoas da horta, suas histórias, trajetos e trajetórias

Gauge Invariant Fractional Electromagnetic Fields

Fractional derivatives and integrations of non-integers orders was introduced more than three centuries ago but only recently gained more attention due to its application on nonlocal phenomenas. In this context, several formulations of fractional electromagnetic fields was proposed, but all these theories suffer from the absence of an effective fractional vector calculus, and in general are non-causal or spatially asymmetric. In order to deal with these difficulties, we propose a spatially symmetric and causal gauge invariant fractional electromagnetic field from a Lagrangian formulation. From our fractional Maxwell's fields arose a definition for the fractional gradient, divergent and curl operators.Comment: accepted for publication in Physics Letters

ACHADO ACIDENTAL DE AGENESIA RENAL UNILATERAL EM UM PAPAGAIO-DE-PEITO-ROXO (AMAZONA VINACEA) EM EXAME NECROSCÓPICO - RELATO DE CASO

Durante o procedimento necroscópico de um papagaio-do-peito-roxo, fêmea, notou-se ausência de estrutura renal do lado direito, o qual era compreendido apenas por uma cápsula. Foi observado discreto aumento do rim esquerdo, caracterizando hipertrofia de rim contralateral, provocado por mecanismos compensatórios, devido à ausência de um rim. Constatou-se Agenesia Renal, cujo diagnóstico foi ocasional no momento da necropsia, e não possuía relação com os sinais clínicos apresentados pelo animal em vida, bem como não afetava nenhuma condição fisiológica do animal.

ACÚMULO DE FERRO NO FÍGADO DE UM TUCANO (RAMPHASTOS TOCO) - RELATO DE CASO

Foi recebido para atendimento na Clínica Veterinária Amazoo Pets, localizada no município de Jundiaí, São Paulo um exemplar de tucano-toco (Ramphastos toco). No exame clínico o animal apresentava dispneia, apatia, fraqueza e dificuldade de manter-se em estação. Este veio a óbito no mesmo dia, e durante a realização do exame necroscópico foi observado hepatomegalia acentuada, onde o órgão se encontrava de coloração acastanhada, com bordos regulares e consistência normal. Foram colhidos fragmentos do fígado e fixado em solução de formalina a 10%, para processamento histológico e avaliação microscópica. As lâminas foram coradas com o corante de Hematoxilina e Eosina (HE) e Reação Azul da Prússia (Técnica de Pearls). Somando os achados clínicos, macroscópicos e confirmação microscópica, foi possível diagnosticar a doença do acúmulo de ferro em um tucano

INFLUÊNCIA DO CLIMA NO DESENVOLVIMENTO DAS MUDAS DE Citrus spp. ENXERTADAS

Não se aplica

Nonfactorizable contributions in B decays to charmonium: the case of B−→K−hcB^- \to K^- h_c

Nonleptonic $B$ to charmonium decays generally show deviations from the factorization predictions. For example, the mode $B^- \to K^- \chi_{c0}$ has been experimentally observed with sizeable branching fraction while its factorized amplitude vanishes. We investigate the role of rescattering effects mediated by intermediate charmed meson production in this class of decay modes, and consider $B^- \to K^- h_c$ with $h_c$ the $J^{PC}=1^{+-}$ $\bar c c$ meson. Using an effective lagrangian describing interactions of pairs of heavy-light $Q{\bar q}$ mesons with a quarkonium state, we relate this mode to the analogous mode with $\chi_{c0}$ in the final state. We find ${\cal B}(B^- \to K^- h_c)$ large enough to be measured at the $B$ factories, so that this decay mode could be used to study the poorly known $h_c$.Comment: RevTex, 16 pages, 2 eps figure

Rare Decays of \Lambda_b->\Lambda + \gamma and \Lambda_b ->\Lambda + l^{+} l^{-} in the Light-cone Sum Rules

Within the Standard Model, we investigate the weak decays of $\Lambda_b \to \Lambda + \gamma$ and $\Lambda_b \to \Lambda + l^{+} l^{-}$ with the light-cone sum rules approach. The higher twist distribution amplitudes of $\Lambda$ baryon to the leading conformal spin are included in the sum rules for transition form factors. Our results indicate that the higher twist distribution amplitudes almost have no influences on the transition form factors retaining the heavy quark spin symmetry, while such corrections can result in significant impacts on the form factors breaking the heavy quark spin symmetry. Two phenomenological models (COZ and FZOZ) for the wave function of $\Lambda$ baryon are also employed in the sum rules for a comparison, which can give rise to the form factors approximately 5 times larger than that in terms of conformal expansion. Utilizing the form factors calculated in LCSR, we then perform a careful study on the decay rate, polarization asymmetry and forward-backward asymmetry, with respect to the decays of $\Lambda_b \to \Lambda \gamma$, $\Lambda l^{+}l^{-}$.Comment: 38 pages, 15 figures, some typos are corrected and more references are adde

Two-Proton Correlations from 14.6A GeV/c Si+Pb and 11.5A GeV/c Au+Au Central Collisions

Two-proton correlation functions have been measured in Si+Pb collisions at 14.6A GeV/c and Au+Au collisions at 11.5A GeV/c by the E814/E877 collaboration. Data are compared with predictions of the transport model RQMD and the source size is inferred from this comparison. Our analysis shows that, for both reactions, the characteristic size of the system at freeze-out exceeds the size of the projectile, suggesting that the fireball created in the collision has expanded. For Au+Au reactions, the observed centrality dependence of the two-proton correlation function implies that more central collisions lead to a larger source sizes.Comment: RevTex, 12 pages, 5 figure

Heavy quarkonium: progress, puzzles, and opportunities

A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the $B$-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations. The plethora of newly-found quarkonium-like states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b}, and b\bar{c} bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hot- and cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D. Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A. Petrov, P. Robbe, A. Vair

Feebly-Interacting Particles:FIPs 2020 Workshop Report

With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop "Physics Beyond Colliders meets theory", held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.Comment: 240 pages, 71 figure