996 resultados para Geologia urbana


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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O vídeo apresenta consequências da erosão fluvial no município de São Carlos – SP. O objetivo é mostrar ao aluno o desastre causado por uma obra mal planejada, vítima da força da natureza agredida por atividades antrópicas.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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The spatial chaotic urban growth is an increasing and common problem in Brazilian cities, especially in the State of São Paulo. In order to assist the territorial expansion planning, the present study aimed to conduct the environmental diagnosis of urban expansion areas in the City of Jaguariúna – SP, bounded by the Municipal Plan. From the preparation and analysis of thematic maps, literature review and field analysis, data were collected for use and occupation, geology, geomorphology, pedology, vegetation, water resources and features surrounding the five urban sprawl existing areas. It was noted, in general, that these areas are suitable for urban occupation, since they show flat geomorphology characteristics, with flattened, medium to large hills, slightly undulated, with low slope, and soils that do not present risks to the deployment of buildings, once properly managed. It was also observed a few water bodies crossing these areas and a few areas with native vegetation beyond permanent protection areas along the rivers. By the analysis of these areas and their surroundings, it was possible to determine on which area the urbanization process can occur more quickly. Thus, the study allows the City of Jaguariúna to perform a more effective occupation planning in these areas, always aiming the sustainable development and, consequently, the improvement in population’s quality of life, as well as the maintenance of environmental quality.

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Different forms of human pressure may occur in the pipeline ranges, due to the large extensions and various configurations of land use, which can pass through the pipelines. Due to the dynamics of these pressures, it is necessary to monitor temporal changes of land use and cover the surface. Under this theme, appears as extremely important to use products and techniques of remote sensing, as they allow the identification of objects of the land surface that may compromise the security and monitoring of the pipeline, and allows the extraction of information conditions on land use at different periods of time. Based on the above, this paper aims to examine in a temporal approach, the process of urban expansion in the municipality of Duque de Caxias, located on the outskirts of the metropolitan area of the state of Rio de Janeiro, as well as settlement patterns characteristic of areas that the changes occurred in the period 1987 to 2010. We used the technique of visual analysis to perform the change detection and the technique of image classification, aimed at monitoring human pressure over a stretch of track pipeline Rio de Janeiro - Belo Horizonte, located in the state of Rio de Janeiro. The stages of work involved the characterization of the study area, urban sprawl and the existing settlement patterns, through the analysis of bibliographic data. The processing of Landsat 5 images and the application of the technique of change detection were performed in three scenes for the years 1987, 1998 and 2010, while the classification process was performed on the image RapidEye for the year 2010. Can be noted an increase in urban area of approximately 22.38% and the change of land cover from natural to built. This growth is concentrated outside to the area of direct influence of the duct, occurring in the area of indirect influence of the enterprise. Regarding the settlement patterns of growth areas, it was observed that these are predominantly

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L'arxiu conté catorze presentacions tipo Power Point, corresponents als temes impartits durant el curs 2010/11 en la assignatura de Geologia Aplicada a l'Enginyeria Civil.

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El presente trabajo se realizó en la zona urbana del Municipio de Masaya, entre los meses de Agosto y Noviembre de 1998, con el objetivo de caracterizar los canales de comercialización de la carne de pollo, así como también los factores que afecten el consumo de , El estudio se basó en el análisis de 148 encuestas sobre consumo de carne de pollo, realizadas a la población consumidora así como también entrevistas semi estructuradas a agentes la cadena de intermediación. Se utilizó el método de mínimos cuadrados para analizar el efecto sobre el consumo de carne de pollo de las variables propio precio, precio de sustitutos y el ingreso percapita. Además se realizó el cálculo de las respectivas elasticidades. Para el análisis se utilizó una serie de tiempo que comprende el periodo 1992-1998. Los productos avícolas se venden en 3 presentaciones: pollo de engorde (entero congelado y cortado en pieza), ponedoras de descarte y gallinas de patio. La oferta de pollo de engorde obedece un mercado oligopólico con características de monopolio, con un sistema de comercialización centralizado. El margen bruto de comercialización de la carne de pollo de engorde varía de acuerdo al tipo de presentación oscilando entre el 29 - 30 % del valor pagado por el consumidor. Así mismo el margen bruto de comercialización para las ponedoras de descarte oscila entre 18- 22%. Los precios de la carne de pollo varían de acuerdo a la forma en que se presente la canal y al tipo de establecimiento donde se oferta dicho producto (1O -12 córdobas por libra). Con respecto a otros tipos de carne, el pollo presenta un precio relativo menor. El consumo per cápita en la zona es de 28 libras por persona por año; siendo mayor ellos estratos de ingreso más alto, pero se consume aún en los estratos de ingresos más bajos. El incremento del precio del pollo tiende a reducir la demanda. Las preferencias del consumidor son hacia un pollo con poco contenido de grasa y de textura blanda pero no flácida. El 85% de la población consume pollo de engorde principalmente en la presentación de pollo cortado en pieza. La elasticidad precio resultó altamente elástica siendo esta de 2.72. La elasticidad cruzada de cante de pollo con carne de res resultó de 0.84 la cual demuestra que la carne de pollo alcanza ser un sustituto de la carne de res, así mismo la elasticidad ingreso es de -1.33 lo que indica que el pollo es un bien normal básico.