899 resultados para González, José Eleuterio, 1813-1888


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A new smart concrete aggregate design as a candidate for applications in structural health monitoring (SHM) of critical elements in civil infrastructure is proposed. The cement-based stress/strain sensor was developed by utilizing the stress/strain sensing properties of a magnetic microwire embedded in cement-based composite (MMCC). This is a contact-less type sensor that measures variations of magnetic properties resulting from stress variations. Sensors made of these materials can be designed to satisfy the specific demand for an economic way to monitor concrete infrastructure health. For this purpose, we embedded a thin magnetic microwire in the core of a cement-based cylinder, which was inserted into the concrete specimen under study as an extra aggregate. The experimental results show that the embedded MMCC sensor is capable of measuring internal compressive stress around the range of 1-30 MPa. Two stress sensing properties of the embedded sensor under uniaxial compression were studied: the peak amplitude and peak position of magnetic switching field. The sensitivity values for the amplitude and position within the measured range were 5 mV/MPa and 2.5 mu s/MPa, respectively.

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Background: Bronchiolitis caused by the respiratory syncytial virus (RSV) and its related complications are common in infants born prematurely, with severe congenital heart disease, or bronchopulmonary dysplasia, as well as in immunosuppressed infants. There is a rich literature on the different aspects of RSV infection with a focus, for the most part, on specific risk populations. However, there is a need for a systematic global analysis of the impact of RSV infection in terms of use of resources and health impact on both children and adults. With this aim, we performed a systematic search of scientific evidence on the social, economic, and health impact of RSV infection. Methods: A systematic search of the following databases was performed: MEDLINE, EMBASE, Spanish Medical Index, MEDES-MEDicina in Spanish, Cochrane Plus Library, and Google without time limits. We selected 421 abstracts based on the 6,598 articles identified. From these abstracts, 4 RSV experts selected the most relevant articles. They selected 65 articles. After reading the full articles, 23 of their references were also selected. Finally, one more article found through a literature information alert system was included. Results: The information collected was summarized and organized into the following topics: 1. Impact on health (infections and respiratory complications, mid-to long-term lung function decline, recurrent wheezing, asthma, other complications such as otitis and rhino-conjunctivitis, and mortality; 2. Impact on resources (visits to primary care and specialists offices, emergency room visits, hospital admissions, ICU admissions, diagnostic tests, and treatments); 3. Impact on costs (direct and indirect costs); 4. Impact on quality of life; and 5. Strategies to reduce the impact (interventions on social and hygienic factors and prophylactic treatments). Conclusions: We concluded that 1. The health impact of RSV infection is relevant and goes beyond the acute episode phase; 2. The health impact of RSV infection on children is much better documented than the impact on adults; 3. Further research is needed on mid-and long-term impact of RSV infection on the adult population, especially those at high-risk; 4. There is a need for interventions aimed at reducing the impact of RSV infection by targeting health education, information, and prophylaxis in high-risk populations.

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Background: The integrated treatment of first episode psychosis has been shown to improve functionality and negative symptoms in previous studies. In this paper, we describe a study of integrated treatment (individual psychoeducation complementary to pharmacotherapy) versus treatment as usual, comparing results at baseline with those at 6-month re-assessment (at the end of the study) for these patients, and online training of professionals to provide this complementary treatment, with the following objectives: 1) to compare the efficacy of individual psychoeducation as add-on treatment versus treatment as usual in improving psychotic and mood symptoms; 2) to compare adherence to medication, functioning, insight, social response, quality of life, and brain-derived neurotrophic factor, between both groups; and 3) to analyse the efficacy of online training of psychotherapists. Methods/design: This is a single-blind randomised clinical trial including patients with first episode psychosis from hospitals across Spain, randomly assigned to either a control group with pharmacotherapy and regular sessions with their psychiatrist (treatment as usual) or an intervention group with integrated care including treatment as usual plus a psychoeducational intervention (14 sessions). Training for professionals involved at each participating centre was provided by the coordinating centre (University Hospital of Alava) through video conferences. Patients are evaluated with an extensive battery of tests assessing clinical and sociodemographic characteristics (Positive and Negative Syndrome Scale, State-Trait Anxiety Inventory, Liebowitz Social Anxiety Scale, Hamilton Rating Scale for Depression, Scale to Assess Unawareness of Mental Disorders, Strauss and Carpenter Prognostic Scale, Global Assessment of Functioning Scale, Morisky Green Adherence Scale, Functioning Assessment Short Test, World Health Organization Quality of Life instrument WHOQOL-BREF (an abbreviated version of the WHOQOL-100), and EuroQoL questionnaire), and brain-derived neurotrophic factor levels are measured in peripheral blood at baseline and at 6 months. The statistical analysis, including bivariate analysis, linear and logistic regression models, will be performed using SPSS. Discussion: This is an innovative study that includes the assessment of an integrated intervention for patients with first episode psychosis provided by professionals who are trained online, potentially making it possible to offer the intervention to more patients.

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En este Proyecto Fin de Carrera se ha realizado el diseño y la implementación de la aplicación JonBike. Tiene como objetivo mejorar y optimizar el seguimiento de los entrenamientos de los ciclistas. El desarrollo se ha realizado en un marco de integración y colaboración directa de los usuarios en el proyecto, partiendo de un Producto Mínimo Viable o "Minimum Viable Product" (MVP) inicial e integrando su feedback en la progresiva ampliación de las características del servicio. El sistema está compuesto por una aplicación móvil nativa para Android y una fuente de datos alojada en un servidor remoto. En implementación se han utilizado tecnologías emergentes, todas de código abierto: MongoDB junto con MongoLab para el almacenamiento de datos y plataforma base para el backend, y desarrollando como cliente, una aplicación Android nativa.

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Coherent ecological networks (EN) composed of core areas linked by ecological corridors are being developed worldwide with the goal of promoting landscape connectivity and biodiversity conservation. However, empirical assessment of the performance of EN designs is critical to evaluate the utility of these networks to mitigate effects of habitat loss and fragmentation. Landscape genetics provides a particularly valuable framework to address the question of functional connectivity by providing a direct means to investigate the effects of landscape structure on gene flow. The goals of this study are (1) to evaluate the landscape features that drive gene flow of an EN target species (European pine marten), and (2) evaluate the optimality of a regional EN design in providing connectivity for this species within the Basque Country (North Spain). Using partial Mantel tests in a reciprocal causal modeling framework we competed 59 alternative models, including isolation by distance and the regional EN. Our analysis indicated that the regional EN was among the most supported resistance models for the pine marten, but was not the best supported model. Gene flow of pine marten in northern Spain is facilitated by natural vegetation, and is resisted by anthropogenic landcover types and roads. Our results suggest that the regional EN design being implemented in the Basque Country will effectively facilitate gene flow of forest dwelling species at regional scale.

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Background: Type 2 diabetes mellitus is associated with a diverse range of pathologies. The aim of the study was to determine the incidence of diabetes-related complications, the prevalence of coexistent chronic conditions and to report multimorbidity in people with type 2 diabetes living in the Basque Country. Methods: Administrative databases, in four cross sections (annually from 2007 to 2011) were consulted to analyse 149,015 individual records from patients aged >= 35 years with type 2 diabetes mellitus. The data observed were: age, sex, diabetes-related complications (annual rates of acute myocardial infarction, major amputations and avoidable hospitalisations), diabetes-related pathologies (prevalence of ischaemic heart disease, renal failure, stroke, heart failure, peripheral neuropathy, foot ulcers and diabetic retinopathy) and other unrelated pathologies (44 diseases). Results: The annual incidence for each condition progressively decreased during the four-year period: acute myocardial infarction (0.47 to 0.40%), major amputations (0.10 to 0.08%), and avoidable hospitalisations (5.85 to 5.5%). The prevalence for diabetes-related chronic pathologies was: ischaemic heart disease (11.5%), renal failure (8.4%), stroke (7.0%), heart failure (4.3%), peripheral neuropathy (1.3%), foot ulcers (2.0%) and diabetic retinopathy (7.2%). The prevalence of multimorbidity was 90.4%. The highest prevalence for other chronic conditions was 73.7% for hypertension, 13.8% for dyspepsia and 12.7% for anxiety. Conclusions: In the type 2 diabetes mellitus population living in the Basque Country, incidence rates of diabetes complications are not as high as in other places. However, they present a high prevalence of diabetes related and unrelated diseases. Multimorbidity is very common in this group, and is a factor to be taken into account to ensure correct clinical management.

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Esta tese tem por objetivo investigar as memórias de infância na escrita autobiográfica de Graciliano Ramos, Oswald de Andrade, José Lins do Rego e Cyro dos Anjos, privilegiando as estratégias de autorrepresentação adotadas pelos autores nas obras Infância, Um homem sem profissão - sob as ordens de mamãe, Meus verdes anos e A menina do sobrado. Tal abordagem tem como objeto de reflexão os elementos que são relevantes para a configuração de uma identidade narrativa na escrita autobiográfica. Das diferentes formas de autofiguração retiramos as estratégias textuais. As estratégias a que recorre uma escrita de si em certo espaço, em certo tempo e em certa linguagem. Estabelecemos os procedimentos comuns na retórica de nossos autores, tais como a primeira lembrança, a elaboração da crônica familiar, os pais, os lugares da memória, a época de escola e a cena de leitura. Nossa perspectiva se apresenta como uma indagação sobre os procedimentos usados na construção da identidade, considerando que as cenas selecionadas pelo escritor elaboram a autoimagem que ele deseja construir

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Resumen Background: Nitric oxide can be measured at multiple flow rates to determine proximal (maximum airway nitric oxide flux; Jaw(NO)) and distal inflammation (alveolar nitric oxide concentration; CA(NO)). The main aim was to study the association among symptoms, lung function, proximal (maximum airway nitric oxide flux) and distal (alveolar nitric oxide concentration) airway inflammation in asthmatic children treated and not treated with inhaled glucocorticoids. Methods: A cross-sectional study with prospective data collection was carried out in a consecutive sample of girls and boys aged between 6 and 16 years with a medical diagnosis of asthma. Maximum airway nitric oxide flux and alveolar nitric oxide concentration were calculated according to the two-compartment model. In asthmatic patients, the asthma control questionnaire (CAN) was completed and forced spirometry was performed. In controls, differences between the sexes in alveolar nitric oxide concentration and maximum airway nitric oxide flux and their correlation with height were studied. The correlation among the fraction of exhaled NO at 50 ml/s (FENO50), CA(NO), Jaw(NO), forced expiratory volume in 1 second (FEV1) and the CAN questionnaire was measured and the degree of agreement regarding asthma control assessment was studied using Cohen's kappa. Results: We studied 162 children; 49 healthy (group 1), 23 asthmatic participants without treatment (group 2) and 80 asthmatic patients treated with inhaled corticosteroids (group 3). CA(NO) (ppb) was 2.2 (0.1-4.5), 3 (0.2-9.2) and 2.45 (0.1-24), respectively. Jaw(NO) (pl/s) was 516 (98.3-1470), 2356.67 (120-6110) and 1426 (156-11805), respectively. There was a strong association (r = 0.97) between FENO50 and Jaw(NO) and the degree of agreement was very good in group 2 and was good in group 3. There was no agreement or only slight agreement between the measures used to monitor asthma control (FEV1, CAN questionnaire, CA(NO) and Jaw(NO)). Conclusions: The results for CA(NO) and Jaw(NO) in controls were similar to those found in other reports. There was no agreement or only slight agreement among the three measure instruments analyzed to assess asthma control. In our sample, no additional information was provided by CA(NO) and Jaw(NO).

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[ES]En este documento se estudia el desarrollo de una aplicación electrónica para la ayuda a gente con movilidad reducida a través de unos sensores cerebrales que permitan el análisis de la iniciativa de la persona a realizar acciones que de otra manera no podría realizar. El concepto completo consiste en el diseño del sensor que el paciente se colocaría en la cabeza, el tratamiento de la información extraída y la actuación por medio de una solución mecánica, como un conjunto cilindro-pistón para el futuro desarrollo de un sistema de ayuda a la movilidad.

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A presente pesquisa objetiva, em essência, discutir questões referentes à expressividade em textos literários, como também observar a riqueza de suas múltiplas possibilidades de construção estética. Esse material é burilado pelos recursos fônicos, morfossintáticos e léxico-semânticos do sistema linguístico. Foram utilizados como corpus para o trabalho os contos de Ana Maria Machado e as poesias de José Paulo Paes, produções inseridas no Programa Literatura em Minha Casa e que sensibilizaram os leitores pelo jogo verbal primoroso, resultado das escolhas e das combinações dos autores. Foram tomados como referência para análise dos textos os recursos linguístico-expressivos neles observados, pretendendo demonstrar o potencial expressivo, com vistas a propor alternativa pedagógica, de caráter produtivo para o ensino, despertando a sensibilidade frente ao texto literário e contribuindo para promover o prazer de ler dos alunos do ensino fundamental. Para tanto, a autora buscou na estilística fundamentos teóricos e metodológicos que aprofundassem a temática em tela

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O romance Ensaio sobre a cegueira, do escritor português José Saramago, publicado em 1995, revela profundas críticas à estrutura da sociedade hodierna, bem como sua política. Em vistas desse fato, a presente dissertação investiga as relações políticas e filosóficas presentes no romance, estabelecendo como arcabouço teórico as pesquisas do filósofi italiano Giorgio Agamben sobre o estado de exceção na série de volumes Homo Sacer, que segue a trilha deixada por Michel Foucault sobre os dispositivos de poder e saber na sociedade contemporânea. A pesquisa ora apresentada revela uma leitura do estado de exceção enquanto uma estrutura de exclusão da vida nuaatravés de uma via biopolítica que encontra no romance do escritor português um intenso questionamento sobre o homem moderno descolado de si mesmo

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This work is aimed at optimizing the wind turbine rotor speed setpoint algorithm. Several intelligent adjustment strategies have been investigated in order to improve a reward function that takes into account the power captured from the wind and the turbine speed error. After different approaches including Reinforcement Learning, the best results were obtained using a Particle Swarm Optimization (PSO)-based wind turbine speed setpoint algorithm. A reward improvement of up to 10.67% has been achieved using PSO compared to a constant approach and 0.48% compared to a conventional approach. We conclude that the pitch angle is the most adequate input variable for the turbine speed setpoint algorithm compared to others such as rotor speed, or rotor angular acceleration.

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Este trabalho faz uma análise comparativa de algumas das principais obras de história literária do Brasil, publicadas no século XIX e início do século XX, escritas, respectivamente, por Ferdinand Wolf, Sílvio Romero e José Veríssimo. São analisadas as concepções de nacionalismo, de história e de literatura que veiculam, relacionando-as com as ideias que circulavam à época em que foram escritos Le Brésil Littéraire, de Ferdinand Wolf, a História da Literatura Brasileira, de Sílvio Romero, e a obra homônima de José Veríssimo. Sendo assim, além de analisar as obras comparativamente, o presente trabalho recupera o significado histórico que comportam, uma vez que as insere no quadro de referências vigentes no momento em que apareceram. Partindo do pressuposto de que a característica principal desses textos é a ideia de nacionalismo, estudam-se os significados atribuídos a este termo desde meados do século XIX até inícios do século XX, momento em que foram escritas aquelas histórias literárias. Ademais, relacionam-se as narrativas às variadas formas de se pensar a história, enquanto disciplina, nesse período, procurando identificá-las pelo modo como constroem a explicação histórica. Por fim, as ideias que apresentam a respeito da literatura são articuladas não só às concepções de nacionalismo e de história que aqueles textos veiculam, como também à reflexão que então se fazia