Reconstructing the invisible with matrix elements

We propose a fully flexible method to perform an hypothesis test between signal and background based on the Matrix Element Method in the presence of multiple invisible particles. The proposed method performs a mapping of the measured final state onto its minimal hypersurface of degrees of freedom for a given process and then maximises the matrix element on this hypersurface separately for signal and background. To show how performant the method is in separating signal from background, we apply it to the prominent partly invisible decay of a Higgs boson into a muon-antimuon pair and two muon-neutrinos via two W bosons.Comment: 4 page

As possibilidades de uma administração cooperativa em um horizonte altermundista

O presente trabalho tem como objetivo estudar as alterações que marcaram o mundo pós-Guerra Fria, e seus impactos na vida em sociedade e na Administração. Apresentando uma nova proposta que possa substituir o caráter selvagem e individualista do neoliberalismo, por um sistema onde predomine a colaboração entre os homens em prol do bem-comum. Uma vez compreendida a teoria, analisaremos esta discussão sob uma perspectiva de um caso real, dos trabalhadores de uma fábrica argentina que, após uma luta por melhores condições de trabalho, tomaram para si o controle da produção

Implementação do Laboratório Regional de Prótese Dentária no município de Juiz de Fora

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Sustainable Use of Recycled Asphalt Pavement in Soil Stabilization

This study addresses unused recycled asphalt pavement (RAP) incorporated into sedimentary soil from the Guabirotuba Formation in Curitiba, Southern Brazil. Different percentages of RAP, ranging from 0% to 80% by weight, were mixed with the pure soil, with and without the addition of pozzolanic Portland cement. Tests were conducted to evaluate the mixtures' compaction properties, mechanical strength, and expansion after curing for up to 28 days. The results showed that adding RAP improved the mixtures' unconfined compressive strength (qu) and splitting tensile strength (qt). Up to 60% RAP, the qu increased by 260 kPa, and the qt increased by 340 kPa compared to the pure soil. The California Bearing Ratio (CBR) tests demonstrated an 18.62% improvement when 80% RAP was added to the untreated soil. In addition, the RAP also reduced the expansion of the compacted blends, with values decreasing from 1.19% to 0.88% with 80% RAP replacement. The expansion value was further reduced to 0.86% when the cement was added. The cement-soil-RAP compacted blends showed suitability for subgrade reinforcement, meeting the criteria of expansion 2%. Additionally, 3% cement and 40% RAP mixtures were suitable as a sub-base layer, with expansion 20%. The results provide valuable insights into utilizing RAP as an alternative material in soil improvement techniques employing the novelty porosity-to-cement index. Doi: 10.28991/CEJ-2023-09-09-016 Full Text: PD

Efeito da adição de resíduo da clarificação de óleo vegetal no comportamento mecânico de um solo tropical laterítico

The objective of this work was to evaluate the performance of the mechanical resistance of the discarded clay and residual lateritic tropical soil mixture in order to provide an environmentally adequate destination for the residue through its application in base layers and sub-base of flexible pavements. The mixtures were composed of 100% solids, 100% discarded clarifying clay (DCC), 05% DCC + 95% solids, 10% DCC + 90% solids, 20% DCC + 80% 70% soil and 40% DCC + 60% soil, totalizing seven experimental units. To evaluate the mechanical performance, the Proctor and California Support Index (CBR) compaction tests were carried out at intermediate and modified energies. The mixtures obtained similar granulometric behavior to the local soil, observing a change of the fine fraction due to the increase of the same residue. The results of mechanical resistance indicated a better performance of the mixtures with 10% of DCC + 90% soil and 20% of DCC + 80% soil, in the modified energy, being recommended as material for the execution of pavements. For the other mixtures, it is recommended only the use in the execution of sub-bases of flexible pavements.O objetivo desse trabalho foi avaliar o desempenho da resistência mecânica da mistura de argila clarificante descartada e solo tropical laterítico residual, no intuito de proporcionar uma destinação ambientalmente adequada ao resíduo por meio da sua aplicação em camadas de base e sub-base de pavimentos flexíveis. Foram utilizadas misturas compostas por 100% solo, 100% argila clarificante descartada (ACD), 05% ACD + 95% solo, 10% ACD + 90% solo, 20% ACD + 80% solo, 30% ACD + 70% solo e 40% ACD + 60% solo, totalizando sete unidades experimentais. Para avaliação do desempenho mecânico, foram realizados os ensaios de compactação Proctor e Índice de Suporte Califórnia (CBR), nas energias intermediária e modificada. As misturas obtiveram comportamento granulométrico similar ao solo local, observando-se uma alteração da fração fina devido o incremento do resíduo as mesmas. Os resultados de resistência mecânica indicaram um melhor desempenho das misturas com 10% de ACD + 90% solo e 20% de ACD + 80% solo, na energia modificada, sendo recomendadas como material para execução de base de pavimentos. Para as demais misturas, recomenda-se apenas o emprego na execução de sub-bases de pavimentos flexíveis