The Blackholic energy and the canonical Gamma-Ray Burst IV: the "long", "genuine short" and "fake - disguised short" GRBs

(Shortened) [...] After recalling the basic features of the "fireshell model", we emphasize the following novel results: 1) the interpretation of the X-ray flares in GRB afterglows as due to the interaction of the optically thin fireshell with isolated clouds in the CircumBurst Medium (CBM); 2) an interpretation as "fake - disguised" short GRBs of the GRBs belonging to the class identified by Norris & Bonnell [...] consistent with an origin from the final coalescence of a binary system in the halo of their host galaxies with particularly low CBM density [...]; 3) the first attempt to study a genuine short GRB with the analysis of GRB 050509B, that reveals indeed still an open question; 4) the interpretation of the GRB-SN association in the case of GRB 060218 via the "induced gravitational collapse" process; 5) a first attempt to understand the nature of the "Amati relation", a phenomenological correlation between the isotropic-equivalent radiated energy of the prompt emission E_{iso} with the cosmological rest-frame \nu F_{\nu} spectrum peak energy E_{p,i}. In addition, recent progress on the thermalization of the electron-positron plasma close to their formation phase, as well as the structure of the electrodynamics of Kerr-Newman Black Holes are presented. An outlook for possible explanation of high-energy phenomena in GRBs to be expected from the AGILE and the Fermi satellites are discussed. As an example of high energy process, the work by Enrico Fermi dealing with ultrarelativistic collisions is examined. It is clear that all the GRB physics points to the existence of overcritical electrodynamical fields. In this sense we present some progresses on a unified approach to heavy nuclei and neutron stars cores, which leads to the existence of overcritical fields under the neutron star crust.Comment: 68 pages, 50 figures, in the Proceedings of the XIII Brazilian School on Cosmology and Gravitation, M. Novello, S.E. Perez-Bergliaffa, editor

Investigating the toxicity of tropical reservoir sediments using the Allium test

Water pollution is a global environmental issue, and aquatic sediments are important compartments that might act as sinks or sources of contaminants. Once in the environment, inorganic contaminants such as metals can cause cytogenotoxic effects that damage genetic material and harm the aquatic community. Biological assays such as the Allium test can be used to investigate potential cytogenotoxicity of contaminated sediments based on the alterations of cell cycle indexes and chromosomal aberration frequencies. Therefore, we aimed to assess the toxicity of sediments from four Brazilian reservoirs using the Allium test. Sediments were sampled and elutriates were prepared in a simulating sediment resuspension in the water column. The Allium test was applied to the elutriates, and the metals copper, chromium, cadmium, lead, zinc, and iron were quantified. The elutriates derived from reservoir sediments were able to reduce the mitotic and anaphase index, increase the prophase and metaphase index, and boost chromosomal aberrations compared to the negative control. The cytogenotoxic effects observed may be linked to the presence of copper, zinc, and iron. Therefore, our results showed that the Allium test was a sensitive tool for warning the occurrence of genotoxic contaminants in sediment elutriates from four Brazilian reservoirs

The canonical Gamma-Ray Bursts and their "precursors"

The fireshell model for Gamma-Ray Bursts (GRBs) naturally leads to a canonical GRB composed of a proper-GRB (P-GRB) and an afterglow. P-GRBs, introduced by us in 2001, are sometimes considered "precursors" of the main GRB event in the current literature. We show in this paper how the fireshell model leads to the understanding of the structure of GRBs, with precise estimates of the time sequence and intensities of the P-GRB and the of the afterglow. It leads as well to a natural classification of the canonical GRBs which overcomes the traditional one in short and long GRBs.Comment: 4 pages, 3 figures, Proceedings of the 2008 Nanjing GRB conferenc

ETAPAS DO MÉTODO CIENTÍFICO COM ALUNOS DO ENSINO FUNDAMENTAL

The objective of this work was to stimulate scientific knowledge in students since Basic Education through the development of the stages of scientific methods. This paper aimed to describe the report on a set of investigative actions, following the steps of the Scientific Method. The method used was the observation of a site publication on the behavior of an ant species (Camponotus terebrans), the problem was raised (Does the pixixic ant (Wasmannia auropunctata) also prefer pee than sugarwater?), elaboration of hypotheses, beginning of experimentation, analysis of results, acceptance or rejection of the hypothesis. The behavior of ants (W. auropunctata) observed in the four experiments led the students to accept hypothesis 3 (the ant prefers sugary water than pee) different from the behavior of ant C. terebrans reported on the https://www.valedoitaunas.com.br/artigo/formigas-preferem-ingerir-xixi-a-acucar-e-isso-faz-bem-ao-planeta. Based on the reports, it is perceived that the students understood, through practice, the subject that was exposed in the textbook, as well as demonstrated a scientific character. El objetivo de este trabajo era estimular el conocimiento científico en los estudiantes desde educación básica a través del desarrollo de las etapas de los métodos científicos. Este documento tenía como objetivo describir el informe sobre un conjunto de acciones de investigación, siguiendo los pasos del Método Científico. El método utilizado fue la observación de una publicación en el sitio sobre el comportamiento de una especie de hormiga (Camponotus terebrans), se planteó el problema (¿La hormiga pixixica (Wasmannia auropunctata) también prefiere el pis que el agua de azúcar?), la elaboración de hipótesis, el inicio de la experimentación, el análisis de resultados, la aceptación o el rechazo de la hipótesis. El comportamiento de las hormigas (W. auropunctata) observado en los cuatro experimentos llevó a los estudiantes a aceptar la hipótesis 3 (la hormiga prefiere el agua azucarada que el pis) diferente del comportamiento de la hormiga C. terebrans reportado en el https://www.valedoitaunas.com.br/artigo/formigas-preferem-ingerir-xixi-a-acucar-e-isso-faz-bem-ao-planeta. Sobre la base de los informes, se percibe que los estudiantes entendieron, a través de la práctica, el tema que fue expuesto en el libro de texto, así como demostraron un carácter científico. O objetivo deste trabalho foi estimular o saber científico nos educandos desde a Educação Básica de Ensino através do desenvolvimento das etapas dos métodos científicos. Buscou-se descrever, neste trabalho, o relato sobre um conjunto de ações investigativa, seguindo os passos do Método científico. O método utilizado foi a observação de uma publicação em site sobre o comportamento de uma espécie de formiga (Camponotus terebrans), foi levantado o problema (Será que a formiga pixixica (Wasmannia auropunctata) também prefere xixi do que água açucarada?), elaboração de hipóteses, início de experimentação, análise dos resultados, aceitação ou rejeição da hipótese. O comportamento das formigas (W. auropunctata) observadas nas quatro experiências, levou os alunos a aceitarem a hipótese  "a formiga prefere água açucarada do que xixi" diferente do comportamento da formiga C. terebrans relatada no site https://www.valedoitaunas.com.br/artigo/formigas-preferem-ingerir-xixi-a-acucar-e-isso-faz-bem-ao-planeta. Firmando-se nos relatórios, percebe-se que os educandos compreenderam, através da prática, o assunto que estava exposto no livro didático, bem como demonstraram um caráter científico.

Socioeconomic status and the 25 x 25 risk factors as determinants of premature mortality : a multicohort study and meta-analysis of 1.7 million men and women

Background In 2011, WHO member states signed up to the 25 x 25 initiative, a plan to cut mortality due to noncommunicable diseases by 25% by 2025. However, socioeconomic factors influencing non-communicable diseases have not been included in the plan. In this study, we aimed to compare the contribution of socioeconomic status to mortality and years-of-life-lost with that of the 25 x 25 conventional risk factors. Methods We did a multicohort study and meta-analysis with individual-level data from 48 independent prospective cohort studies with information about socioeconomic status, indexed by occupational position, 25 x 25 risk factors (high alcohol intake, physical inactivity, current smoking, hypertension, diabetes, and obesity), and mortality, for a total population of 1 751 479 (54% women) from seven high-income WHO member countries. We estimated the association of socioeconomic status and the 25 x 25 risk factors with all-cause mortality and cause-specific mortality by calculating minimally adjusted and mutually adjusted hazard ratios [HR] and 95% CIs. We also estimated the population attributable fraction and the years of life lost due to suboptimal risk factors. Findings During 26.6 million person-years at risk (mean follow-up 13.3 years [SD 6.4 years]), 310 277 participants died. HR for the 25 x 25 risk factors and mortality varied between 1.04 (95% CI 0.98-1.11) for obesity in men and 2.17 (2.06-2.29) for current smoking in men. Participants with low socioeconomic status had greater mortality compared with those with high socioeconomic status (HR 1.42, 95% CI 1.38-1.45 for men; 1.34, 1.28-1.39 for women); this association remained significant in mutually adjusted models that included the 25 x 25 factors (HR 1.26, 1.21-1.32, men and women combined). The population attributable fraction was highest for smoking, followed by physical inactivity then socioeconomic status. Low socioeconomic status was associated with a 2.1-year reduction in life expectancy between ages 40 and 85 years, the corresponding years-of-life-lost were 0.5 years for high alcohol intake, 0.7 years for obesity, 3.9 years for diabetes, 1.6 years for hypertension, 2.4 years for physical inactivity, and 4.8 years for current smoking. Interpretation Socioeconomic circumstances, in addition to the 25 x 25 factors, should be targeted by local and global health strategies and health risk surveillance to reduce mortality.Peer reviewe

Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics

A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance of b-tagging and the trigger. The physics potential for a variety of interesting physics processes, within the Standard Model and beyond, is examined. The study comprises a series of notes based on simulations of the detector and physics processes, with particular emphasis given to the data expected from the first years of operation of the LHC at CERN

Exclusion of mutations in the PRNP, JPH3, TBP, ATN1, CREBBP, POU3F2 and FTL genes as a cause of disease in Portuguese patients with a Huntington-like phenotype

Huntington disease (HD) is an autosomal dominant neurodegenerative disorder characterised by chorea, cognitive impairment, dementia and personality changes, caused by the expansion of a CAG repeat in the HD gene. Often, patients with a similar clinical presentation do not carry expansions of the CAG repeat in this gene [Huntington disease-like (HDL) patients]. We report the genetic analysis of 107 Portuguese patients with an HDL phenotype. The HDL genes PRNP and JPH3, encoding the prion protein and junctophilin-3, respectively, were screened for repeat expansions in these patients. Given the partial clinical overlap of SCA17, DRPLA and neuroferritinopathy with HD, their causative genes (TBP, ATN1, and FTL, respectively) were also analysed. Finally, repeat expansions in two candidate genes, CREBBP and POU3F2, which encode the nuclear transcriptional coactivator CREB-binding protein and the CNS-specific transcription factor N-Oct-3, respectively, were also studied. Expansions of the repetitive tracts of the PRNP, JPH3, TBP, ATN1, CREBBP and POU3F2 genes were excluded in all patients, as were sequence alterations in the FTL gene. Since none of the genes already included in the differential diagnosis of HD was responsible for the disease in our sample, the genetic heterogeneity of the HDL phenotype is still open for investigation.Fundação para a Ciência e a Tecnologia (FCT) and FEDER (grant CBO/33485/99). BIC included in grant CBO/33485/99, respectivel

Terapias voltadas para o tratamento do transtorno dissociativo de identidade

O transtorno dissociativo de identidade compreende uma condição psicológica complexa provavelmente causada por inúmeros fatores, envolvendo trauma grave na primeira infância, como abuso sexual, físico ou emocional repetitivo e extremo e repetitivo. Este estudo teve como objetivo identificar as terapias voltadas para o tratamento do transtorno dissociativo de identidade. Para isso, foi realizada uma revisão integrativa de literatura, selecionando fontes a partir das bases de dados Medline e Lilacs. A partir da análise qualitativa de dados, concluiu-se que há vários tipos de terapias para o tratamento de pessoas transtorno dissociativo de identidade, devendo essas serem aplicadas conforme cada realidade. Nos estudos, foram identificados os modelos de tratamento psicanalítico relacional, fásico, psicoativo e psicotraumatológico. Em todos esses, foram registrados resultados satisfatórios, tais como a diminuição na dissociação e o aumento do funcionamento adaptativo do paciente, revelando a possibilidade de desconstruir crenças solidamente cultivadas e trazendo esperança aos pacientes no sentido de amenizar ou superar esse transtorno e garantir uma boa interação social

Measurement and interpretation of same-sign W boson pair production in association with two jets in pp collisions at s = 13 TeV with the ATLAS detector

This paper presents the measurement of fducial and diferential cross sections for both the inclusive and electroweak production of a same-sign W-boson pair in association with two jets (W±W±jj) using 139 fb−1 of proton-proton collision data recorded at a centre-of-mass energy of √s = 13 TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed by selecting two same-charge leptons, electron or muon, and at least two jets with large invariant mass and a large rapidity diference. The measured fducial cross sections for electroweak and inclusive W±W±jj production are 2.92 ± 0.22 (stat.) ± 0.19 (syst.)fb and 3.38±0.22 (stat.)±0.19 (syst.)fb, respectively, in agreement with Standard Model predictions. The measurements are used to constrain anomalous quartic gauge couplings by extracting 95% confdence level intervals on dimension-8 operators. A search for doubly charged Higgs bosons H±± that are produced in vector-boson fusion processes and decay into a same-sign W boson pair is performed. The largest deviation from the Standard Model occurs for an H±± mass near 450 GeV, with a global signifcance of 2.5 standard deviations