Encontrados 6 documentos, a visualizar página 1 de 1
Poluição por partículas. Um estudo de magnetismo ambiental com biocolectores em...
H. Sant'Ovaia; M.J. Lacerda; C.R. GomesThis work presents an assessment on the pollution levels in plant leaves from 5 selected sites, 4 in urban areas and one in a rural area. It was used an environmental magnetism study with particle biological collectors (Nerium oleander L., Quercus spp., Tilia spp. e Platanus spp.). The results pointed out the contrast between sites with high traffic and the countryside. When comparing the biological collectors,...
Evolução da abordagem da Tectónica de Placas nos manuais escolares do ensino se...
M.Santos; H. Sant'Ovaia; J.Moreira; M.A. RibeiroPreceded by years of scientific discoveries and summaries, Plate Tectonics has only established itself as a true theory 40 years ago, leading to a recasting and clarification of geological processes and concepts that were never fully explained until then.. This article consists of a case study approach focused on this theory in secondary school textbooks from the 1960s until today, its relationship with the soc...
Estudo multidisciplinar no plutão granítico de Valpaços
H. Corrêa-Ribeiro; H. C. B. Martins; H. Sant'Ovaia
Fabric magnético em red beds da Formação de Conraria, Portugal Central
C.R. Gomes; H. Sant'Ovaia; A. F. Rocha; A.F. SoaresThe main goal of this study was to quantify the magnetic fabric on rock samples of the upper subunit of the Conraria Formation, Silves Group, in the region of Coimbra. Studies of Anisotropy of Magnetic Susceptibility (AMS) were carried out on 50 samples from 11 sites in order to characterise the magnetic fabric. The general parallelism between an oblate fabric and stratification may indicate a combination betwe...
Estudo da microfracturação do maciço granítico de Castelo Branco através dos Pl...
A. Dória; P. Morais; M. Santos; C. R. Gomes; F. Noronha; H. Sant'OvaiaThe main objective of this study was to determine the geometry of the FIP, in the Castelo Branco granite massif. This study showed that in addition to FIP in Mode I, are also present Mode II, suggesting that the directions found NE-SW to NNE-SSW and E-W to ESE-WNW can be interpreted as related to a maximum stress (σ1) oriented NE-SW. The NNW-SSE orientation corresponds to a late system
Base de dados de sedimentos para aplicações forenses
A. Guedes; H. Ribeiro; A. Rodrigues; B. Valentim; H. Sant'Ovaia; Fernando NoronhaIn order to build up a forensic database with the characteristics of the sediments and soils of the Portuguese mainland hundreds of beach and dune sediment samples were collected. The samples have been analyzed by several analytical techniques and several studies were undertaken to assess which are the properties best suited to the discrimination between areas and samples
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