Search for anomalous heavy-flavor quark production in association with W bosons

We search for anomalous production of heavy-flavor quark jets in association with W bosons at the Fermilab Tevatron p(p) over bar Collider in final states in which the heavy-flavor quark content is enhanced by requiring at least one tagged jet in an event. Jets are tagged using one algorithm based on semileptonic decays of b/c hadrons, and another on their lifetimes. We compare e+jets (164 pb(-1)) and mu+jets (145 pb(-1)) channels collected with the D0 detector at root s = 1.96 TeV to expectations from the standard model and set upper limits on anomalous production of such events.

Reduto de São José: história e memória de um bairro operário (1920-1940)

O Reduto é uma área contígua ao centro da cidade de Belém surgida na segunda metade do século XVIII com a construção de uma fortificação militar. Foi efetivamente ocupado durante o século XIX, quando viveu um período de intensa atividade comercial resultante da economia da borracha. Na primeira década do século XX com a implantação de um projeto modernizador surgiram obras na cidade que forçaram uma reestruturação do espaço urbano. Enquanto o restante da cidade era embelezado, a área do Reduto, para atender aos interesses capitalistas da economia exportadora, sofria uma descaracterização no seu espaço original: o aterramento da sua doca e a quebra do seu movimentado comércio. Entretanto, novas formas espaciais foram surgindo no bairro. Ocupando uma posição conveniente, a margem imediata da baía, o Reduto tornou-se uma área atrativa para a instalação de fábricas e foi pouco a pouco assumindo ares de bairro industrial. Funcionários, comerciantes e empresários de várias nacionalidades, ou simplesmente operários em busca de trabalho deram ao Reduto até meados do século XX características bem particulares que ficaram marcadas no imaginário coletivo da cidade e ainda hoje são presentes na memória dos seus antigos moradores.

Relações na escola da infância: perspectivas teóricas e didático-pedagógicas

This article portrays pathways and studies, arising from research already completed on relationships that constitute the process of appropriation-objectification of the world of human culture by the child at the School for Children, under the gaze of Historical-Cultural Approach. The studies had been configured in accord with a theoretical look that understands the relations as propeller of the humanization process and the child as capable to learn since very small. Initially, there is deepening of theoretical issues concerning the regularities of human development between three and six years old, based on the propositions of the Historical-Cultural Approach. Subsequently, it presents results of the routes methodological that integrated observation sessions of educational practice in schools in early childhood education, involving the relationship between children, adults and objects, as well as sessions of designs and semi-structured interviews with the children. These results show the resulting analysis of the pedagogical implications of the propositions of the HistoricalCultural Approach about the humanization process, mediation and activity.

Implementação de um sistema de informação voltado à sensibilidade ambiental ao óleo do litoral sul paulista e avaliação das ações de resposta a derramamentos de óleo

Oil spills cause serious damage to the cost life and environments. Those impacts affect ecologic and socio-economic resources (like fishing and tourism). Within this background, response actions have two main objectives: the contaminant removal, with the less additional impacts, and enhance environment restoration in order to make this process complete in the shortest time possible. The present work proposes to contribute for the emergency environmental management in cases of oil spills by systematization of relevant information for oil spill environmental sensitivity maps. The next stage was to insert all these data on a geographic database, which allows data access by web. Beside that, this work aimed to recommend suitable clean-up techniques for the ecosystems located on the study area, composed by the municipalities: Praia Grande, Mongaguá, Itanhaém and Peruíbe, belonging to Baixada Santista and Iguape, Cananéia and Ilha Comprida, south cost of São Paulo state. This area is situated between two important Brazilian ports: Santos and Paranaguá, and that make it under considerable accident risks. The results were all data inserted on the geodatabase and available to user recover the information by web consulting. With that, this work wishes to contribute to individual emergencial planning of the region.

Discontinuous Waveband Switching in WDM Optical Networks

Routing techniques used in wavelength routed optical networks (WRN) do not give an efficient solution with Waveband routed optical networks (WBN) as the objective of routing in WRN is to reduce the blocking probability and that in WBN is to reduce the number of switching ports. Routing in WBN can be divided two parts, finding the route and grouping the wavelength assigned into that route with some existing wavelengths/wavebands. In this paper, we propose a heuristic for waveband routing, which uses a new grouping strategy called discontinuous waveband grouping to group the wavelengths into a waveband. The main objective of our algorithm is to decrease the total number of ports required and reduce the blocking probability of the network. The performance of the heuristic is analyzed using simulation on a WBN with non-uniform wavebands.

Laboratory study of grouted macadams impregnated with mine waste geopolymeric binder

A new type of pavement has been gaining popularity over the last few years in Europe. It comprises a surface course with a semi-flexible material that provides significant advantages in comparison to both concrete and conventional asphalt, having both rut resistance and a degree of flexibility. It also provides good protection against the ingress of water to the foundation, since it has an impermeable surface. The semi-flexible material, generally known as grouted macadam, comprises an open-graded asphalt skeleton with 25% to 35% voids into which a cementitious slurry is grouted. This hybrid mixture provides good rut resistance and a surface highly resistant to fuel and oil spillage. Such properties allow it to be used in industrial areas, airports and harbours, where those situations are frequently associated with heavy and slow traffic. Grouted Macadams constitute a poorly understood branch of pavement technology and have generally been relegated to a role in certain specialist pavements whose performance is predicted on purely empirical evidence. Therefore, the main objectives of this project were related to better understanding the properties of this type of material, in order to predict its performance more realistically and to design pavements incorporating grouted macadam more accurately. Based on a standard mix design, several variables were studied during this project in order to characterise the behaviour of Grouted Macadams in general, and the influence of those variables on the fundamental properties of the final mixture. In this research project, one approach was used to the design of pavements incorporating Grouted Macadams: a traditional design method, based on laboratory determined of the stiffness modulus and the compressive strength.

Characterization of Staphylococcus aureus adhesins important for respiratory tract infection

Staphylococcus aureus is a leading cause of lower respiratory tract infections in both adult and pediatric populations. In the past two decades, reports have described emergent incidence of severe necrotizing pneumonia in previously healthy individuals, frequently caused by antibiotic resistant strains. Additionally, S. aureus remains the most common cause of ventilator-associated pneumonia, contributing morbidity and mortality in intensive care units. As treatment of infection is made more difficult by the resistance to multiple antibiotics including vancomycin, there is a pressing need for novel strategies to prevent and treat S. aureus infections. Targeting essential mechanisms that promote infection such as adhesion, colonization, invasion, evasion of immune system and signaling may lead to inhibition of pathogenic surge. Staphylococcal adhesins of the MSCRAMM family (microbial surface components recognizing adherent matrix molecules) represent viable targets for such investigations. Understanding the molecular mechanism of binding is the first step toward the development of such therapies. Analysis of bacterial strains isolated from patients with staphylococcal pneumonia show increased expression of protein A, SdrD, SdrC and ClfB, cell surface proteins members of the MSCRAMM family. In this study the interaction of these MSCRAMMs with candidate ligands has been examined. We found that SdrD mediates S. aureus adherence to the lung epithelial cell line A549. Consistently, bacteria expressing SdrD have increased persistence in the lungs of infected mice after bronchoalveolar lavage in comparison with bacteria lacking this protein. Inhibition studies revealed that bacterial attachment can be abolished using neutralizing antibodies against SdrD. Using phage display, neurexin β isoforms were identified as SdrC binding partners. Previous reports postulated that MSCRAMMS bind their ligands by a 'dock, lock and latch' mechanism of interaction. Our data suggested that ClfB, an MSCRAMM responsible for nasal colonization, binds cytokeratin 10 by a 'dock and lock' variant of this model, in which the 'latching' event is not necessary. In summary, we have characterized aspects of molecular interaction between several MSCRAMMS and host components. We hope that continued delineation of these interactions will lead to identification of novel therapeutic targets or preventive strategies against S. aureus infections. ^

Entre puertos, campos y acopios : Trabajo y transporte de granos en torno al Sudeste bonaerense

En este artículo, se analiza el proceso de trabajo en el transporte automotor de granos en torno al sudeste bonaerense. Desde un abordaje cualitativo, se describen y analizan las prácticas durante la cosecha y pos-cosecha, y los trayectos campo-acopio, acopio-puerto. También se analizan las relaciones laborales a partir de una perspectiva ampliada de las relaciones laborales clásicas (asalariadas, estables, protegidas).Los rasgos que asume el trabajo en el transporte de granos están asociados a los cambios técnicos y tecnológicos de la producción de granos, así como a procesos de flexibilización laboral, vinculados a la disponibilidad permanente para fletar, la extensión de la jornada laboral y la intensidad del trabajo camionero

La Cooperativa de Luz y Fuerza de Río Tercero: una institución al servicio de su comunidad, 1933- 1953

En nuestro país, las cooperativas eléctricas surgieron a partir de la década de 1920 como reacción popular frente a las elevadas tarifas y al deficiente servicio proporcionado por las empresas de capital extranjero que tenían a su cargo la generación y la distribución de energía. La provincia de Córdoba no fue ajena a este fenómeno, en este artículo nos proponemos mostrar las circunstancias en que surgió la Cooperativa de Luz y Fuerza de Río Tercero en 1933, la que a diferencia de otras de la provincia de Córdoba no generaba la energía que distribuía sino que la compraba a la usina hidráulica del dique Río Tercero, y al mismo tiempo resaltar también su evolución y las repercusiones de su gestión durante las dos primeras décadas de vida en las que prestó el servicio de energía eléctrica y comenzó con las gestiones encaminadas a concretar la provisión de agua corriente a la población de Río Tercero, convirtiéndose en la Cooperativa de Luz y Fuerza y Agua Potable de Río Tercero Limitada inaugurando ese servicio en 1953.

Entre puertos, campos y acopios : Trabajo y transporte de granos en torno al Sudeste bonaerense

En este artículo, se analiza el proceso de trabajo en el transporte automotor de granos en torno al sudeste bonaerense. Desde un abordaje cualitativo, se describen y analizan las prácticas durante la cosecha y pos-cosecha, y los trayectos campo-acopio, acopio-puerto. También se analizan las relaciones laborales a partir de una perspectiva ampliada de las relaciones laborales clásicas (asalariadas, estables, protegidas).Los rasgos que asume el trabajo en el transporte de granos están asociados a los cambios técnicos y tecnológicos de la producción de granos, así como a procesos de flexibilización laboral, vinculados a la disponibilidad permanente para fletar, la extensión de la jornada laboral y la intensidad del trabajo camionero

Entre puertos, campos y acopios : Trabajo y transporte de granos en torno al Sudeste bonaerense

En este artículo, se analiza el proceso de trabajo en el transporte automotor de granos en torno al sudeste bonaerense. Desde un abordaje cualitativo, se describen y analizan las prácticas durante la cosecha y pos-cosecha, y los trayectos campo-acopio, acopio-puerto. También se analizan las relaciones laborales a partir de una perspectiva ampliada de las relaciones laborales clásicas (asalariadas, estables, protegidas).Los rasgos que asume el trabajo en el transporte de granos están asociados a los cambios técnicos y tecnológicos de la producción de granos, así como a procesos de flexibilización laboral, vinculados a la disponibilidad permanente para fletar, la extensión de la jornada laboral y la intensidad del trabajo camionero

La Cooperativa de Luz y Fuerza de Río Tercero: una institución al servicio de su comunidad, 1933- 1953

En nuestro país, las cooperativas eléctricas surgieron a partir de la década de 1920 como reacción popular frente a las elevadas tarifas y al deficiente servicio proporcionado por las empresas de capital extranjero que tenían a su cargo la generación y la distribución de energía. La provincia de Córdoba no fue ajena a este fenómeno, en este artículo nos proponemos mostrar las circunstancias en que surgió la Cooperativa de Luz y Fuerza de Río Tercero en 1933, la que a diferencia de otras de la provincia de Córdoba no generaba la energía que distribuía sino que la compraba a la usina hidráulica del dique Río Tercero, y al mismo tiempo resaltar también su evolución y las repercusiones de su gestión durante las dos primeras décadas de vida en las que prestó el servicio de energía eléctrica y comenzó con las gestiones encaminadas a concretar la provisión de agua corriente a la población de Río Tercero, convirtiéndose en la Cooperativa de Luz y Fuerza y Agua Potable de Río Tercero Limitada inaugurando ese servicio en 1953.

Entre puertos, campos y acopios : Trabajo y transporte de granos en torno al Sudeste bonaerense

En este artículo, se analiza el proceso de trabajo en el transporte automotor de granos en torno al sudeste bonaerense. Desde un abordaje cualitativo, se describen y analizan las prácticas durante la cosecha y pos-cosecha, y los trayectos campo-acopio, acopio-puerto. También se analizan las relaciones laborales a partir de una perspectiva ampliada de las relaciones laborales clásicas (asalariadas, estables, protegidas).Los rasgos que asume el trabajo en el transporte de granos están asociados a los cambios técnicos y tecnológicos de la producción de granos, así como a procesos de flexibilización laboral, vinculados a la disponibilidad permanente para fletar, la extensión de la jornada laboral y la intensidad del trabajo camionero

La Cooperativa de Luz y Fuerza de Río Tercero: una institución al servicio de su comunidad, 1933- 1953

En nuestro país, las cooperativas eléctricas surgieron a partir de la década de 1920 como reacción popular frente a las elevadas tarifas y al deficiente servicio proporcionado por las empresas de capital extranjero que tenían a su cargo la generación y la distribución de energía. La provincia de Córdoba no fue ajena a este fenómeno, en este artículo nos proponemos mostrar las circunstancias en que surgió la Cooperativa de Luz y Fuerza de Río Tercero en 1933, la que a diferencia de otras de la provincia de Córdoba no generaba la energía que distribuía sino que la compraba a la usina hidráulica del dique Río Tercero, y al mismo tiempo resaltar también su evolución y las repercusiones de su gestión durante las dos primeras décadas de vida en las que prestó el servicio de energía eléctrica y comenzó con las gestiones encaminadas a concretar la provisión de agua corriente a la población de Río Tercero, convirtiéndose en la Cooperativa de Luz y Fuerza y Agua Potable de Río Tercero Limitada inaugurando ese servicio en 1953.

Border Industry in Myanmar: Turning the Periphery into the Center of Growth

The Myanmar economy has not been deeply integrated into East Asia’s production and distribution networks, despite its location advantages and notably abundant, reasonably well-educated, cheap labor force. Underdeveloped infrastructure, logistics in particular, and an unfavorable business and investment environment hinder it from participating in such networks in East Asia. Service link costs, for connecting production sites in Myanmar and other remote fragmented production blocks or markets, have not fallen sufficiently low to enable firms, including multi-national corporations to reduce total costs, and so the Myanmar economy has failed to attract foreign direct investments. Border industry offers a solution. The Myanmar economy can be connected to the regional and global economy through its borders with neighboring countries, Thailand in particular, which already have logistic hubs such as deep-sea ports, airports and trunk roads. This paper examines the source of competitiveness of border industry by considering an example of the garment industry located in the Myanmar-Thai border area. Based on such analysis, we recognize the prospects of border industry and propose some policy measures to promote this on Myanmar soil.