The Kinetic Interpretation of the DGLAP Equation, its Kramers-Moyal Expansion and Positivity of Helicity Distributions

According to a rederivation - due to Collins and Qiu - the DGLAP equation can be reinterpreted (in leading order) in a probabilistic way. This form of the equation has been used indirectly to prove the bound $|\Delta f(x,Q)| < f(x,Q)$ between polarized and unpolarized distributions, or positivity of the helicity distributions, for any $Q$. We reanalize this issue by performing a detailed numerical study of the positivity bounds of the helicity distributions. To obtain the numerical solution we implement an x-space based algorithm for polarized and unpolarized distributions to next-to-leading order in $\alpha_s$, which we illustrate. We also elaborate on some of the formal properties of the Collins-Qiu form and comment on the underlying regularization, introduce a Kramers-Moyal expansion of the equation and briefly analize its Fokker-Planck approximation. These follow quite naturally once the master version is given. We illustrate this expansion both for the valence quark distribution $q_V$ and for the transverse spin distribution $h_1$.Comment: 38 pages, 27 figures, Dedicated to Prof. Pierre Ramond for his 60th birthda

Fitorreguladores na recuperação da germinação de lotes comerciais de sementes de maracujazeiro-azedo.

Sementes podem se tornar inviáveis ao longo do armazenamento, impossibilitando a comercialização de lotes em razão da baixa capacidade germinativa. Reguladores vegetais em sementes de Passiflora spp. têm sido empregado para potencializar a germinação. Neste trabalho, objetivou-se avaliar o uso de reguladores vegetais na germinação de sementes de lotes comerciais de maracujazeiro-azedo. O delineamento experimental foi inteiramente casualizado em fatorial 8 x 2, com quatro repetições de 50 sementes. Sendo oito lotes de sementes de cultivares com diferentes períodos de armazenamento (BRS RC/18, BRS RC 024/15, BRS RC 028/14, BRS SC/17, BRS SC/16, BRS GA/17, BRS GA/16 e BRS GA/15) e dois tratamentos {[T1- água destilada e T2- uso de GA4+7 + N-(fenilmetil)- aminopurina (300 ppm)]}. A germinação foi avaliada aos 7 e aos 28 dias após a incubação. Os dados foram submetidos à análise de variância e as médias dos tratamentos comparadas pelo teste Tukey. Houve efeito significativo dos lotes, dos tratamentos das sementes e também da interação. O tratamento com GA4+7 + N-(fenilmetil) - aminopurina (300 ppm) recuperou a germinação das sementes dos lotes BRS RC 024/15 e BRS RC 028/14, que não seriam mais comercializados por não atender as porcentagens mínimas de germinação exigidas

Modulation of the Effects of Lung Immune Response on Bone Marrow by Oral Antigen Exposure

Allergic airway inflammation is attenuated by oral tolerization (oral exposure to allergen, followed by conventional sensitization and challenge with homologous antigen), which decreases airway allergen challenge-induced eosinophilic infiltration of the lungs and bone marrow eosinophilia. We examined its effects on bone marrow eosinophil and neutrophil production. Mice of wild type (BP-2, BALB/c, and C57BL/6) and mutant strains (lacking iNOS or CD95L) were given ovalbumin (OVA) or water (vehicle) orally and subsequently sensitized and challenged with OVA (OVA/OVA/OVA and H2O/OVA/OVA groups, resp.). Anti-OVA IgG and IgE, bone marrow eosinophil and neutrophil numbers, and eosinophil and neutrophil production ex vivo were evaluated. T lymphocytes from OVA/OVA/OVA or control H2O/OVA/OVA donors were transferred into naïve syngeneic recipients, which were subsequently sensitized/challenged with OVA. Alternatively, T lymphocytes were cocultured with bone marrow eosinophil precursors from histocompatible sensitized/challenged mice. OVA/OVA/OVA mice of the BP-2 and BALB/c strains showed, relative to H2O/OVA/OVA controls, significantly decreased bone marrow eosinophil counts and ex vivo eosinopoiesis/neutropoiesis. Full effectiveness in vivo required sequential oral/subcutaneous/intranasal exposures to the same allergen. Transfer of splenic T lymphocytes from OVA/OVA/OVA donors to naive recipients prevented bone marrow eosinophilia and eosinopoiesis in response to recipient sensitization/challenge and supressed eosinopoiesis upon coculture with syngeneic bone marrow precursors from sensitized/challenged donors

Modeling the Dynamic Transmission of Dengue Fever: Investigating Disease Persistence

Dengue is the most rapidly spreading mosquito-borne viral disease in the world and approximately 2.5 billion people live in dengue endemic countries. In Brazil it is mainly transmitted by Aedes aegypti mosquitoes. The wide clinical spectrum ranges from asymptomatic infections or mild illness, to the more severe forms of infection such as dengue hemorrhagic fever or dengue shock syndrome. The spread and dramatic increase in the occurrence of dengue cases in tropical and subtropical countries has been blamed on uncontrolled urbanization, population growth and international traveling. Vaccines are under development and the only current disease control strategy is trying to keep the vector quantity at the lowest possible levels. Mathematical models have been developed to help understand the disease's epidemiology. These models aim not only to predict epidemics but also to expand the capacity of phenomena explanation. We developed a spatially explicit model to simulate the dengue transmission in a densely populated area. The model involves the dynamic interactions between humans and mosquitoes and takes into account human mobility as an important factor of disease spread. We investigated the importance of human population size, human renewal rate, household infestation and ratio of vectors per person in the maintenance of sustained viral circulation

Resolved Photon Processes

We review the present level of knowledge of the hadronic structure of the photon, as revealed in interactions involving quarks and gluons ``in" the photon. The concept of photon structure functions is introduced in the description of deep--inelastic $e \gamma$ scattering, and existing parametrizations of the parton densities in the photon are reviewed. We then turn to hard \gamp\ and \gaga\ collisions, where we treat the production of jets, heavy quarks, hard (direct) photons, \jpsi\ mesons, and lepton pairs. We also comment on issues that go beyond perturbation theory, including recent attempts at a comprehensive description of both hard and soft \gamp\ and \gaga\ interactions. We conclude with a list of open problems.Comment: LaTeX with equation.sty, 85 pages, 29 figures (not included). A complete PS file of the paper, including figures, can be obtained via anonymous ftp from ftp://phenom.physics.wisc.edu/pub/preprints/1995/madph-95-898.ps.

EVOLUÇÃO DAS POLÍTICAS RELACIONADAS À SAÚDE DA CRIANÇA NO ÂMBITO DA ATENÇÃO PRIMÁRIA BRASILEIRA

Introdução: As políticas públicas são essenciais para reduzir a morbimortalidade infantil. Este estudo descreve a evolução das políticas relacionadas à atenção à criança no âmbito da Atenção Primária à Saúde (APS) no Brasil, implementadas desde a criação do Sistema Único de Saúde (SUS). Metodologia: Revisão narrativa da literatura com base nos principais marcos regulatórios com influência direta ou indireta na Atenção à Saúde da Criança (ACS) na APS, publicados entre 1990 e 2017. Resultados: Foram analisados ​​31 documentos oficiais, organizados em uma linha do tempo e classificados em três categorias: I) Normas do SUS e da APS; II) diretrizes para os serviços de saúde materno-infantil no âmbito da APS; e, III) políticas intersetoriais. Conclusão:A evolução das políticas de CSC no Brasil é marcada por uma série de conquistas em prol da ampliação dos direitos sociais e da garantia do direito à saúde que ampliou o acesso aos serviços de saúde e contribuiu para a melhoria das condições de vida e de vida das crianças. No entanto, as desigualdades sociais e os desafios no acesso e qualidade da atenção na APS são persistentes, com retrocessos causados ​​pela implementação de medidas de austeridade desde 2016.Introdução: Políticas públicas são fundamentais para a redução da morbimortalidade na infância. O presente estudo descreve uma evolução política relacionada à Atenção Primária à Saúde da Criança no âmbito da Atenção Primária Saúde (APS) no Brasil, desde a criação do Sistema Único de Saúde (SUS). Metodologia: Revisão narrativa da literatura com base nos principais marcos normativos com influência na Atenção à Saúde da Criança no âmbito da APS, publicados entre 1990 e 2017. Resultados: Foram analisados 31 documentos oficiais, distribuídos numa linha do tempo, classificados em: I) normatização do SUS e da APS; II) orientação aos serviços de saúde materno-infantil no âmbito da APS e III) políticas intersetoriais. Conclusão: A evolução das políticas pensadas no Brasil está marcada para serviços e como soluções da série de direitos sociais e como possibilidades de vistas da vida. Porém, além das desigualdades sociais, desafios no acesso e na qualidade do cuidado na APS se fazem persistentes, com retrocessos são persistentes agravados com a capacidade de trabalhar1 em medidas de austeridade curso desde 206

ATLANTIC BIRDS: a data set of bird species from the Brazilian Atlantic Forest

South America holds 30% of the world's avifauna, with the Atlantic Forest representing one of the richest regions of the Neotropics. Here we have compiled a data set on Brazilian Atlantic Forest bird occurrence (150,423) and abundance samples (N = 832 bird species; 33,119 bird individuals) using multiple methods, including qualitative surveys, mist nets, point counts, and line transects). We used four main sources of data: museum collections, on-line databases, literature sources, and unpublished reports. The data set comprises 4,122 localities and data from 1815 to 2017. Most studies were conducted in the Florestas de Interior (1,510 localities) and Serra do Mar (1,280 localities) biogeographic sub-regions. Considering the three main quantitative methods (mist net, point count, and line transect), we compiled abundance data for 745 species in 576 communities. In the data set, the most frequent species were Basileuterus culicivorus, Cyclaris gujanensis, and Conophaga lineata. There were 71 singletons, such as Lipaugus conditus and Calyptura cristata. We suggest that this small number of records reinforces the critical situation of these taxa in the Atlantic Forest. The information provided in this data set can be used for macroecological studies and to foster conservation strategies in this biodiversity hotspot. No copyright restrictions are associated with the data set. Please cite this Data Paper if data are used in publications and teaching events. © 2017 by the Ecological Society of Americ

Theory of hard photoproduction

The present theoretical knowledge about photons and hard photoproduction processes, i.e. the production of jets, light and heavy hadrons, quarkonia, and prompt photons in photon-photon and photon-hadron collisions, is reviewed. Virtual and polarized photons and prompt photon production in hadron collisions are also discussed. The most important leading and next-to-leading order QCD results are compiled in analytic form. A large variety of numerical predictions is compared to data from TRISTAN, LEP, and HERA and extended to future electron and muon colliders. The sources of all relevant results are collected in a rich bibliography.Comment: Habilitationsschrift, scheduled for publication in Rev. Mod. Phys., 126 pages, 61 figure