Earth Shape
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Pedogenic Iron Oxides in Iron-Rich Oxisols Developed from Mafic Rocks
ABSTRACT Despite the considerable amount of information on the mineralogical characteristics of pedogenic Fe oxides in Brazilian soils, there are few studies on Fe-rich soils developed from mafic rocks with taxonomic identities at lower categorical levels. This study evaluated the mineralogical characteristics of pedogenic Fe oxides in B horizons (Bw) of Fe-
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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2. ANÁLISE DA CONCENTRAÇÃO E COMPOSIÇÃO DE AEROSSÓIS DE QUEIMADAS NO PANTANAL MATO-GROSSO
The Earth's atmosphere has a large number of small solid and liquid particles which differ in size, shape and composition. One of the most obvious characteristics of the phenomena of air pollution is linked to the occurrence of atmospheric aerosol. The research was conducted in a protected nature reserve, Private Natural Heritage Reserve (RPPN) Social Servic
Quím. Nova. Publicado em: 2016-09
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3. Modelamiento geométrico del cambio de coordenadas UTM causadas por mudanza de referencial geodésico: Caso Sirgas - Chile
Technological advances in recent decades have allowed determining with increasing precision, parameters related to size, shape and gravitational field of the Earth. These new technologies and methods of observation and analysis, accept the use of different Geodetic Reference Systems (GRS) that enable the description of position of any point on Earth's surfac
Bol. Ciênc. Geod.. Publicado em: 2012-12
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4. GEODIVERSIDADE E LÓGICAS TERRITORIAIS NA CHAPADA DIAMANTINA - BAHIA. / GEODIVERSITY AND LOGIC IN TERRITORIAL CHAPADA DIAMANTINA - BAHIA.
The Chapada Diamantina, located in the central part of Bahia state, has a rich geodiversity which happens to be the set of a variety of earth materials, forms and processes that constitute and shape the Earth, with scientific, cultural, educational and/or recreational value. This set consists of geologic formations and structures, morphology, mineral deposit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/10/2011
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5. Characterization of titanium welded joints by the orbital gas tungsten arc welding process for aerospace application
Abstract: In this work, three welding programs for orbital gas tungsten arc welding (GTAW), previously developed, were used, using pulsed current and increasing speed (#A), constant current (#B) and pulsed current and decreasing current (#C). One of these should be used for the propulsion system of the Satellite CBERS (China - Brazil Earth Resources Satellit
J. Aerosp. Technol. Manag.. Publicado em: 2010-08
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6. Detecção de mudanças e recuperação de forma em mapas 3D basedos em nuvens de pontos
This work proposes a framework to efficiently detect and segment changes in 3D point clouds. Initially, we simplify the point cloud which generates a tree representation in order to preserve the relevant characteristics using surface variation as the key constraint. Then, a combined approach using Gaussian Mixture Models (GMM) and the Earth Mover s Distance
Publicado em: 2009
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7. Extração de atributos de forma e seleção de atributos usando algoritmos genéticos para a classificação de regiões / Shape feature extraction and feature selection using genetic algorithm for region classification
Discrimination power of earth surface targets has been continuously bettered with the increasing remote sensors technological advances. Urban systems applications are one of the areas that recently took benefit of these advances, particularly when using high resolution remote sensing data. In this scale, however, it is often necessary to take into account th
Publicado em: 2007
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8. Propagação e convolução do fluxo primario de raios cosmicos ultra-energeticos segundo a resolução de energia estimada do Observatorio Pierre Auger / Propagation and convolution of the ultra-high energy cosmic ray spectrum due to the estimated energy resolution of the Pierre Auger Observatory
In this work, we study the propagation of Ultra-High Energy Cosmic Rays (UHECR) which are injected into the intergalactic medium by sources with flat spatial distribution for several redshifts. The energy spectrum of UHECR observed on the Earth is directly influenced by the energy losses due to both the adiabatic expansion of the universe and interactions wi
Publicado em: 2007
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9. Interpretando a variabilidade cerâmica e as assinaturas químicas e físicas do solo no Sítio Arqueológico Hatahara - AM / Interpreting the pottery variability and the chemical and physical signatures of the soil in the Hatahara archaeological site, AM
This work is the result of a research in the Hatahara archaeological site in Iranduba, AM. Our main goal is to reconstruct the sites structure, functioning and occupation through the mapping of the soils chemical and physical variability as well as the sites ceramics variability, in order to know the variations present and the size and shape of its early set
Publicado em: 2007
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10. Target identification of buried coated objects
We consider the three dimensional electromagnetic inverse scattering problem of determining information about a buried coated object from a knowledge of the electric and magnetic fields measured on the surface of the earth corresponding to time harmonic electric dipoles as incident fields. We assume that the buried object is a perfect conductor that is (poss
Computational & Applied Mathematics. Publicado em: 2006
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11. The tailor-made earth: applications and reflexions about the use of science history in virtual learning environments / A terra sob medida : aplicações e reflexões sobre o uso da historia da ciencia em ambientes virtuais de aprendizagem
A presente tese refere-se ao desenvolvimento e resultados de um curso à distância oferecido durante o 2º semestre de 2004 e início de 2005, em várias edições e versões, para professores dos níveis de ensino fundamental e médio. O tema central são as discussões referentes à direção do achatamento terrestre ocorridas no início do século XVIII,
Publicado em: 2006
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12. Urban expansion and geomorfological expansion in backwater of reservatories: comparative analisis of two drainage basins that are in the source of Guarapiranga, São Paulo / Expansão urbana e evolução geomorfológica em remansos de reservatórios: análise comparativa de duas bacias hidrográficas em guarapiranga, São Paulo
The environmental problems created by the accelerated urban growth in the last fifty years have brought severe consequences to the group of people living in big urban centers. For this reason many scientists, mainly in the field of Earth sciences, have searched the development of new techniques, methodologies and parameters to measure, recognize and attenuat
Publicado em: 2006