Neutrino flares from black hole coronae

We present a model for neutrino flares in accreting black holes based on the injection of a non-thermal population of relativistic particles in a magnetized corona. The most important products of hadronic and photohadronic interactions at high energies are pions. Charged pions decay into muons and neutrinos; muons also decay yielding neutrinos. Taking into account these effects, coupled transport equations are solved for all species of particles and the neutrino production is estimated for the case of accreting galactic black holes.Comment: 13 pages, 8 figures, accepted for publication in Advances in Space Researc

Industry 4.0 and industrial revolutions: an assessment based on complexity

The evolution of society can be related to industrial revolutions. Revolutions are disruptive and transformative phenomena that change and interact with several systems. Industrial revolutions depend on changes in scientific, and mostly technological, paradigms and require people’s participation. They are not only created with individual political intentions, because they are collective and complex systems. The expression Industry 4.0, created in Germany in 2011, denotes the so-called fourth industrial revolution. The question considered in this paper is whether Industry 4.0, as the fourth industrial revolution, is effectively underway or is it still only a vision of the future? This article analyses, from the point of view of the science of complexity, the transformations and the relations of industrial systems with other selected systems. It was made through fractal analysis using indicators of four countries, namely, United Kingdom, United States of America, Germany and China. Considering the evolution of population growth, Gross Domestic Product per capita, communication technologies and intellectual property, the results of the analysis show that the factor that stands out is the protection of intellectual property.The analysis of the previous indicators showed that it is not possible to claim that the fourth industrial revolution is underway, implying that Industrial 4.0 may stil be a vision of the future. The results obtained can not be considered conclusive and more research is needed.This work has been supported by FCT - Fundacao para a Ciencia e Tecnologia within the Project Scope: UID/CEC/00319/2019

Proyecto LLAMA

In this paper we briefly describe a joint scientific and technological effort between Argentina and Brazil, whose first goal is to install and run, in the northwestern part of Argentina, a millimetre and submillimetre observational facility. In the long run, we would like to incorporate this dish to existing ones (ALMA, APEX, ASTE) in the northern extreme of Chile, to be able to carry out, for the first time in Latinamerican soil, very long base- line interferometry at mm/submm wavelengths. We also succintly mention a long term campaign that is under way in order to monitor the transparency of the atmosphere at those wavelengths. The science that can be accom- plished with this instrument, the technology transfer spin-offs related to this project, and the scientific and strategic importance of this project within both the Argentinean and Latinamerican radioastronomy is described.Fil: Arnal, Edmundo Marcelo. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Mirabel Miquele, Igor Felix. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Morras, Ricardo. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Abraham, Zulema. Universidade de Sao Paulo; BrasilFil: de Gouveira dal Pino, Elisabete M. de. Universidade de Sao Paulo; BrasilFil: Lepine, Jacques. Universidade de Sao Paulo; Brasi

REGIONALIZAÇÃO NUM CONTEXTO DE DESENVOLVIMENTO LOCAL

De maneira especial o desenvolvimento local vem sendo estudado em diversas áreas do conhecimento com êxito e destaque na regionalização no Estado de Mato Grosso do Sul. A decisão do governo de incorporar uma dimensão regional para tomada de decisões sobre investimentos públicos implantou a Secretaria do Estado de Meio Ambiente, da Ciência e Tecnologia (SEMAC – MS), e o Instituto do Meio Ambiente do Mato Grosso do Sul (IMASUL).

REGIONALIZAÇÃO NUM CONTEXTO DE DESENVOLVIMENTO LOCAL

De maneira especial o desenvolvimento local vem sendo estudado em diversas áreas do conhecimento com êxito e destaque na regionalização no Estado de Mato Grosso do Sul. A decisão do governo de incorporar uma dimensão regional para tomada de decisões sobre investimentos públicos implantou a Secretaria do Estado de Meio Ambiente, da Ciência e Tecnologia (SEMAC – MS), e o Instituto do Meio Ambiente do Mato Grosso do Sul (IMASUL).

Astrophysical Jets and Outflows

Highly collimated supersonic jets and less collimated outflows are observed to emerge from a wide variety of astrophysical objects. They are seen in young stellar objects (YSOs), proto-planetary nebulae, compact objects (like galactic black holes or microquasars, and X-ray binary stars), and in the nuclei of active galaxies (AGNs). Despite their different physical scales (in size, velocity, and amount of energy transported), they have strong morphological similarities. What physics do they share? These systems either hydrodynamic or magnetohydrodynamic (MHD) in nature and are, as such, governed by non-linear equations. While theoretical models helped us to understand the basic physics of these objects, numerical simulations have been allowing us to go beyond the one-dimensional, steady-state approach extracting vital information. In this lecture, the formation, structure, and evolution of the jets are reviewed with the help of observational information, MHD and purely hydrodynamical modeling, and numerical simulations. Possible applications of the models particularly to YSOs and AGN jets are addressed.Comment: pdf file, 20 pages, 12 figures; invited review lecture for the ASSE 2004 Meeting; submitted to Advances in Spa. Researc

Particle transport in magnetized media around black holes and associated radiation

Galactic black hole coronae are composed of a hot, magnetized plasma. The spectral energy distribution produced in this component of X-ray binaries can be strongly affected by different interactions between locally injected relativistic particles and the matter, radiation and magnetic fields in the source. We study the non-thermal processes driven by the injection of relativistic particles into a strongly magnetized corona around an accreting black hole. We compute in a self-consistent way the effects of relativistic bremsstrahlung, inverse Compton scattering, synchrotron radiation, and the pair-production/annihilation of leptons, as well as hadronic interactions. Our goal is to determine the non-thermal broadband radiative output of the corona. The set of coupled kinetic equations for electrons, positrons, protons, and photons are solved and the resulting particle distributions are computed self-consistently. The spectral energy distributions of transient events in X-ray binaries are calculated, as well as the neutrino production. We show that the application to Cygnus X-1 of our model of non-thermal emission from a magnetized corona yields a good fit to the observational data. Finally, we show that the accumulated signal produced by neutrino bursts in black hole coronae might be detectable for sources within a few kpc on timescales of years. Our work leads to predictions for non-thermal photon and neutrino emission generated around accreting black holes, that can be tested by the new generation of very high energy gamma-ray and neutrino instruments.Comment: 13 pages, 10 figures, accepted for publication in A&

Validación psicométrica del instrumento que evalúa la cultura de seguridad en la Atención Primaria

Objetivo: Analisar a confiabilidade e validade das propriedades psicométricas da versão brasileira do instrumento para Pesquisa sobre Cultura de Segurança do Paciente para Atenção Primária à Saúde. Métodos: Estudo transversal quantitativo, realizado com profissionais da equipe multiprofissional atuantes na Atenção Primária à Saúde de um município da região noroeste do Estado do Rio Grande do Sul, Brasil. O instrumento utilizado foi “Pesquisa sobre Cultura de Segurança do Paciente para Atenção Primária à Saúde”. Resultados: O Alfa de Cronbach foi considerado satisfatório. A análise fatorial alcançou cargas satisfatórias no conjunto de seus fatores. O instrumento apresentou viabilidade de aplicação e potencial de avaliação da estrutura para a qual se propõe. Conclusão: A versão brasileira do questionário mostrou-se válida e confiável, podendo contribuir com pesquisas sobre a cultura de segurança do paciente na Atenção Primária à Saúde no país.Objective: To analyze the reliability and validity of psychometric properties of the Brazilian version of the Survey on Patient Safety Culture in Primary Care. Methods: A quantitative cross-sectional study conducted with multidisciplinary team professionals working in Primary Health Care in a city in the Northwest region of Rio Grande do Sul State, Brazil. The tool used was “Pesquisa sobre Cultura de Segurança do Paciente para Atenção Primária à Saúde” (Survey on Patient Safety Culture in Primary Care). Results: Cronbach's alpha was considered satisfactory. Factorial analysis reached satisfactory loads in all its factors. The tool showed feasibility of application and potential structure assessment for which it is proposed. Conclusion: The Brazilian version of the questionnaire proved to be valid and reliable and could contribute to research on Patient Safety Culture in Primary Care in the country.Objetivo: Analizar la confiabilidad y validez de las propiedades psicométricas de la versión brasileña del instrumento “Encuesta sobre cultura de seguridad del paciente de Atención Primaria de Salud”. Métodos: Estudio transversal cuantitativo, realizado con profesionales del equipo multiprofesional que trabajan en la Atención Primaria de Salud de un municipio de la región noroeste del estado de Rio Grande do Sul, Brasil. El instrumento utilizado fue la “Encuesta sobre cultura de seguridad del paciente de Atención Primaria de Salud”. Resultados: El alfa de Cronbach fue considerado satisfactorio. El análisis factorial alcanzó cargas satisfactorias en el conjunto de sus factores. El instrumento presentó viabilidad de aplicación y potencial de evaluación de la estructura para la que se propone. Conclusión: La versión brasileña del cuestionario demostró ser válida y confiable, de esta forma puede contribuir con estudios sobre la cultura de seguridad del paciente en la Atención Primaria de Salud en el país