341 research outputs found

    Oral and general health of the people of Asunción and San Miguel’s communities in relation to social and environmental conditions in non-irrigated areas of Lavalle

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    Nuestra zona de estudio, el Noreste del Departamento de Lavalle en la Provincia de Mendoza, es una zona árida propia del borde oriental de la Cordillera de Los Andes. Sólo es productivo un pequeño porcentaje de la superficie total, gracias a la nieve y deshielo de la cordillera, que aprovecha los cursos de los ríos y también por la construcción de diques. La zona que nos ocupa hace algo más de cien años era un área cubierta de lagunas que se formaban por los desagües de los Ríos Mendoza y San Juan. Los objetivos son el estudio de la salud oral y salud general de los pobladores de las comunidades de Asunción y San Miguel, teniendo en cuenta características desde lo social antropológico, y asociarlas con problemáticas como la ambiental, las culturales, la relación con la tierra, la población originaria (pueblos huarpe), el agua, la educación, entre otros aspectos. El enfoque es interdisciplinario, ya que se integra la Sociología, la Odontología desde distintas especialidades, las Ciencias Médicas, Comunicadores Sociales y Literatura. Se utilizan métodos cuantitativos y cualitativos. Entre otros aspectos se realizaron análisis de contenido de arsénico y fluor en el agua de pozo de esta zona de estudio.Our study area, Northeast Department of Lavalle in the Province of Mendoza, is a very arid area of the ambientaleseastern edge of the Andes. It is productive only a small percentage of the total area, thanks to melting snow and the mountain range that takes advantage of the courses of rivers and building dikes po. The area in question more than a hundred years ago was a covered area of gaps formed by the drains of the rivers Mendoza and San Juan. The objectives are the study of oral health and general health of the residents of the communities of Asuncion and San Miguel, taking into account character-istics from the social anthropological, and associate them with issues such as environmental, cultural, relationship to the land, the original population (people huarpe), water, education, among others. The approach is interdisciplinary, since sociology, from different specialties Dentistry, Medical Sciences, Social Communicators and Literature is integrated. Quantitative and qualitative methods are used. Among other things analysis of arsenic and fluoride in well water of this area of study were per-formed.Fil: García Cardoni, Mario Oscar. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Martínez, Graciela. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: García Crimi, Graciela Edith. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Sicilia, A.. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Astudillo, Jésica. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Hellwig, German. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Hiramatsu, Teresa. Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Esterlich, María José. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Palmili, Rodrigo. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Gonzá{ez Pellizzari, N.. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Galdeano, F.. Universidad Nacional de Cuyo. Facultad de OdontologíaFil: Astudillo, E.. Universidad Nacional de Cuyo. Facultad de Ciencias Políticas y SocialesFil: Giandomenico, E.

    The BOOMERANG North America Instrument: a balloon-borne bolometric radiometer optimized for measurements of cosmic background radiation anisotropies from 0.3 to 4 degrees

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    We describe the BOOMERANG North America (BNA) instrument, a balloon-borne bolometric radiometer designed to map the Cosmic Microwave Background (CMB) radiation with 0.3 deg resolution over a significant portion of the sky. This receiver employs new technologies in bolometers, readout electronics, millimeter-wave optics and filters, cryogenics, scan and attitude reconstruction. All these subsystems are described in detail in this paper. The system has been fully calibrated in flight using a variety of techniques which are described and compared. It has been able to obtain a measurement of the first peak in the CMB angular power spectrum in a single balloon flight, few hours long, and was a prototype of the BOOMERANG Long Duration Balloon (BLDB) experiment.Comment: 40 pages, 22 figures, submitted to Ap

    Modelling cascading failures in lifelines using temporal networks

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    Lifelines are critical infrastructure systems with high interdependency. During a disaster, the interdependency between the lifelines can lead to cascading failures. In the literature, the approaches used to analyze infrastructure interdependencies within the social, political, and economic domains do not properly describe the infrastructures’ emergency management. During an emergency, the response phase is very condensed in time, and the failures that occur are usually amplified through cascading effects in the long-term period. Because of these peculiarities, interdependencies need to be modeled considering the time dimension. The methodology proposed in this paper is based on a modified version of the Input-output Inoperability Model. The lifelines are modeled using graph theory, and perturbations are applied to the elements of the graph, simulating natural or man-made disasters. The cascading effect among the interdependent networks has been simulated using a spatial multilayer approach. The adjancency tensor has been used to for the temporal dimension and its effects. Finally, the numerical results of the simulations with the proposed model are represented by probabilities of failure for each node of the system. As a case study, the methodology has been applied to a nuclear power plant. The model can be adopted to run analysis at different scales, from the regional to the local scales

    Graduate Recital:Sharon A. Slote, Trumpet Gloria Cardoni, Harpsichord and Piano

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    Kemp Recital Hall Saturday Evening April 19, 1997 5:30p.m

    Perspectives on the Trypanosoma cruzi-host cell receptor interaction

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    Chagas disease is caused by the parasite Trypanosoma cruzi. The critical initial event is the interaction of the trypomastigote form of the parasite with host receptors. This review highlights recent observations concerning these interactions. Some of the key receptors considered are those for thromboxane, bradykinin, and for the nerve growth factor TrKA. Other important receptors such as galectin-3, thrombospondin, and laminin are also discussed. Investigation into the molecular biology and cell biology of host receptors for T. cruzi may provide novel therapeutic targets

    Managing debris clearance from road transportation networks after earthquakes

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    This research proposes a framework that allows to define a debris removal strategy from a road transportation network after a seismic event. The case study is a hypothetical large-scale city consisting of many interdependent infrastructure. Once the debris generated by the collapse of buildings have been estimated, blocked roads are identified. Cleanup operations are then prioritized based on road importance and travel time. The goal is to first verify that evacuation routes and important paths connecting strategic facilities such as hospitals, shelters, fire stations, etc., are available. In case some roads within these paths are blocked, alternative routes are considered. If the pre-event travel time does not significantly increase, clearing equipment and resources could be managed accordingly and directed towards other areas. The objective of this work is to help emergency managers to successfully improve disaster response avoiding delays during rescue and recovery operations

    Experimental Investigation of the Static and Dynamic behaviors of 3D-Printed Shell Structures

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    Over the last years, several optimization strategies were conducted to find the optimal shape minimizing internal stress or total weight (volume) of shell structures. In recent times, this structure typology gained a great importance among researchers and the scientific community for the renowed interest in the form-findind optimization of column-free space solution for large span roofing constructions. In the present paper, a form-finding of a shallow grid shells was introduced basing on the multy-body rope approach (MRA) for the definitions of vault shapes and different hole percentage. In order to obtain an experimental validation, a physical model was reproduced at the laboratory scale performing ad hoc measurements to compare the observed respect to the simulated behaviour. A 3D printing procedure based on the Fuse Deposition Modeling (FDM) technique in polylactide (PLA) material was used to realise form-works of the cement based blocks of the scaled prototype. Several static and dynamic load configurations are investigated, collecting into a sensitivity analysis the parameters which mainly affect the structural behaviour. To simulate earthquake ground motion an assigned frequency range as dynamic input to the structure was provided by a shaking table. Finally, some preliminary considerations of the dynamic response of the model were provided testing the robustness of the form-finding approach when horizontal load are taken into account

    A numerical solution for addressing the overturning phenomena of heritage assets

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    Historical heritage represent a crucial aspect for societies and therefore it should be preserved from natural disasters such as earthquake. Base isolation systems are widely used to mitigate the horizontal effects of strong ground motions on important buildings and bridges, but there are also interesting applications on statues. However, such systems are characterized by properties that are quite different from the ones that belong to traditional civil structures. For this reason, national and international regulations are not exhaustive and actual dynamics of the system should be studied through numerical and experimental methods. Starting from analytical formulations, the paper investigates the sliding and rocking motion in details, being the typical one of statues under seismic loads. The presented numerical model describes the problem and is an alternative to the analytical formulation to perform several analyses automatically. In addition, it allows running parametric analyses to assess the influence of various parameters, such as eccentricity, stiffness, mass, geometric ratios, etc. Future work is geared to validate the numerical model trough performing experimental tests on shaking table

    Resilience Assessment of City-Scale Transportation Networks Using Monte Carlo Simulation

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    To improve the resilience of critical infrastructure systems, their intrinsic properties need to be understood and their resilience state needs be identified. In the literature, several methods to evaluate networks’ reliability and resilience can be found. However, the applicability of these methods is usually restricted to small-size net-works. In this paper, the transportation network of a large-scale virtual city is considered as a case study. A random removal of the roads is applied simulating the network’s failure. The network reliability is then calculated using the Destruction Spectrum (D-spectrum) method and a Monte Carlo approach has been developed to generate failure permutations that are necessary for the evaluation of the D-spectrum se. In addition, the Birnbaum Importance Measure (BIM) has been adopted in this study to determine the importance of the net-work’s components. The methodology adopted in this study can be also extended to all network-based systems. The paper also introduces resilience indicators as a soft tool to predict the performance and serviceability of transportation networks
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