418 research outputs found

    MedElektra : módulo de adquisición de señales biomédicas

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    Knowledge taken into consideration for the stage of design and development; for each sensor, there is a summary of: specifications and characteristics of the signal, types of sensors and mechanisms of adequacy. Subsequently, the design process and the execution of each stage are explained, based on the elements selected from the theoretical framework, after which the protocols of test and characterization of the module are performed, where the actual performance of the module is specified. Finally, there is a brief analysis of conclusions and recommendations for future work.Ingeniero (a) ElectrónicoPregrad

    Implementation of interdisciplinary strategies for returningto work: literature review

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    Objective: Analyze the interdisciplinary strategies implemented in the return to work of workers who report occupational illness and/ or work accident. Method: literature review using topics as: “job relocation,” “Return to work”, “Work”, “Strategies” and “Occupational Therapy”, using boolean AND and OR, search for evidence in the databases: ProQuest, EBSCO, PubMed, Embase and Scopus, in the period 2006 -2016. Results: the findings show a selection of 20 items, found mainly in the ProQuest database. The interdisciplinary approach most commonly used is the identification of the requirements of the job and the skills of the worker and WRI (Worker role interview) assessment used by occupational therapy. Conclusions: assessments as return to work strategy focus on skills and physical functions, often they lack the psychosocial, behavioral and environmental impact as determinants of performance and working capacity; which is why using a web-based occupational performance evaluation, occupational therapists would achieve safely and evaluate effective worker’s ability to perform tasks

    Implementation of interdisciplinary strategies for returning to work: literature review

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    Objetivo: analizar las estrategias interdisciplinarias implementadas en el retorno al trabajo de trabajadores que reportan enfermedad laboral y/o accidente de trabajo.Método: revisión de literatura que utiliza las palabras claves (tesauros): “Reubicación laboral”, “Reincorporación laboral”, “Trabajo”, “Estrategias” y “Terapia Ocupacional”, uso de boléanos AND y OR, búsqueda de la evidencia en las bases de datos: ProQuest, Ebsco, PubMed, Embase y Scopus, en el periodo 2006 - 2016.Resultados: los hallazgos muestran una selección de 20 artículos, encontrados principalmente en la base de datos de ProQuest. La estrategia interdisciplinaria más utilizada es la identificación de la exigencia del puesto de trabajo, las habilidades del trabajador y la evaluación del WRI (Entrevista del rol del trabajador) utilizada por Terapia Ocupacional. Conclusiones: las evaluaciones como estrategia del retorno al trabajo se centran en las capacidades y funciones físicas, con frecuencia no cuentan con el impacto psicosocial, conductual y ambiental como factores determinantes del rendimiento y capacidad laboral; es por esto que, con el uso de una evaluación basada en el desempeño ocupacional, los Terapeutas Ocupacionales lograrían evaluar de forma segura y efectiva la capacidad del trabajador para desempeñar tareas.Objective: Analyze the interdisciplinary strategies implemented in the return to work of workers who report occupational illness and / or work accident. Method: literature review using topics as: “job relocation,” “Return to work”, “Work”, “Strategies” and “Occupational Therapy”, using boolean AND and OR, search for evidence in the databases: ProQuest, EBSCO, PubMed, Embase and Scopus, in the period 2006 - 2016. Results: the findings show a selection of 20 items, found mainly in the ProQuest database. The interdisciplinary approach most commonly used is the identification of the requirements of the job and the skills of the worker and WRI (Worker role interview) assessment used by occupational therapy. Conclusions: assessments as return to work strategy focus on skills and physical functions, often they lack the psychosocial, behavioral and environmental impact as determinants of performance and working capacity; which is why using a web-based occupational performance evaluation, occupational therapists would achieve safely and evaluate effective worker’s ability to perform task

    The Thymus Is a Common Target Organ in Infectious Diseases

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    Infectious disease immunology has largely focused on the effector immune response, changes in the blood and peripheral lymphoid organs of infected individuals, and vaccine development. Studies of the thymus in infected individuals have been neglected, although this is progressively changing. The thymus is a primary lymphoid organ, able to generate mature T cells that eventually colonize secondary lymphoid organs, and is therefore essential for peripheral T cell renewal. Recent data show that normal thymocyte development and export can be altered as a result of an infectious disease. One common feature is the severe atrophy of the infected organ, mainly due to the apoptosis-related depletion of immature CD4(+)CD8(+) thymocytes. Additionally, thymocyte proliferation is frequently diminished. The microenvironmental compartment of the thymus is also affected, particularly in acute infectious diseases, with a densification of the epithelial network and an increase in the deposition of extracellular matrix. In the murine model of Chagas disease, intrathymic chemokine production is also enhanced, and thymocytes from Trypanosoma cruzi-infected mice exhibit greater numbers of cell migration-related receptors for chemokines and extracellular matrix, as well as increased migratory responses to the corresponding ligands. This profile is correlated with the appearance of potentially autoreactive thymus-derived immature CD4(+)CD8(+) T cells in peripheral organs of infected animals. A variety of infectious agents—including viruses, protozoa, and fungi—invade the thymus, raising the hypothesis of the generation of central immunological tolerance for at least some of the infectious agent-derived antigens. It seems clear that the thymus is targeted in a variety of infections, and that such targeting may have consequences on the behavior of peripheral T lymphocytes. In this context, thymus-centered immunotherapeutic approaches potentially represent a new tool for the treatment of severe infectious diseases

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

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    A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

    Search for High-Mass Resonances Decaying to τν in pp Collisions at √s=13 TeV with the ATLAS Detector

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    A search for high-mass resonances decaying to τν using proton-proton collisions at √s=13 TeV produced by the Large Hadron Collider is presented. Only τ-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. No statistically significant excess above the standard model expectation is observed; model-independent upper limits are set on the visible τν production cross section. Heavy W′ bosons with masses less than 3.7 TeV in the sequential standard model and masses less than 2.2–3.8 TeV depending on the coupling in the nonuniversal G(221) model are excluded at the 95% credibility level

    Measurement of jet fragmentation in Pb+Pb and pp collisions at √s NN =5.02 TeV with the ATLAS detector

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    This paper presents a measurement of jet fragmentation functions in 0.49 nb −1 of Pb+Pb collisions and 25 pb −1 of pp collisions at √ sNN =5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements provide insight into the jet quenching process in the quark-gluon plasma created in the aftermath of ultra-relativistic collisions between two nuclei. The modifications to the jet fragmentation functions are quantified by dividing the measurements in Pb+Pb collisions by baseline measurements in pp collisions. This ratio is studied as a function of the transverse momentum of the jet, the jet rapidity, and the centrality of the collision. In both collision systems, the jet fragmentation functions are measured for jets with transverse momentum between 126 GeV and 398 GeV and with an absolute value of jet rapidity less than 2.1. An enhancement of particles carrying a small fraction of the jet momentum is observed, which increases with centrality and with increasing jet transverse momentum. Yields of particles carrying a very large fraction of the jet momentum are also observed to be enhanced. Between these two enhancements of the fragmentation functions a suppression of particles carrying an intermediate fraction of the jet momentum is observed in Pb+Pb collisions. A small dependence of the modifications on jet rapidity is observed

    Search for Higgs bosons produced via vector-boson fusion and decaying into bottom quark pairs in √s =13 TeV pp collisions with the ATLAS detector

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    A search for the bb ¯ decay of the Standard Model Higgs boson produced through vector-boson fusion is presented. Three mutually exclusive channels are considered: two all-hadronic channels and a photon-associated channel. Results are reported from the analysis of up to 30.6 fb −1 of pp data at s √ =13 TeV collected with the ATLAS detector at the LHC. The measured signal strength relative to the Standard Model prediction from the combined analysis is 2.5 +1.4 −1.3 for inclusive Higgs boson production and 3.0 +1.7 −1.6 for vector-boson fusion production only

    Electron and photon energy calibration with the ATLAS detector using 2015–2016 LHC proton-proton collision data

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    This paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb−1 of LHC proton-proton collision data recorded at √s = 13 TeV in 2015 and 2016. The different calibration steps applied to the data and the optimization of the reconstruction of electron and photon energies are discussed. The absolute energy scale is set using a large sample of Z boson decays into electron-positron pairs. The systematic uncertainty in the energy scale calibration varies between 0.03% to 0.2% in most of the detector acceptance for electrons with transverse momentum close to 45 GeV. For electrons with transverse momentum of 10 GeV the typical uncertainty is 0.3% to 0.8% and it varies between 0.25% and 1% for photons with transverse momentum around 60 GeV. Validations of the energy calibration with J/ψ → e + e − decays and radiative Z boson decays are also presented

    Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at √s=8 TeV with the ATLAS detector

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    The inclusive production of four isolated charged leptons in pp collisions is analysed for the presence of hard double-parton scattering, using 20.2fb−1of data recorded in the ATLAS detector at the LHC at centre-of-mass energy √s=8TeV. In the four-lepton invariant-mass range of 80 <m4<1000GeV, an artificial neural network is used to enhance the separation between single-and double-parton scattering based on the kinematics of the four leptons in the final state. An upper limit on the fraction of events originating from double-parton scattering is determined at 95% confidence level to be fDPS=0.042, which results in an estimated lower limit on the effective cross section at 95% confidence level of 1.0mb
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