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Modeling the closure behavior of natural fractures in porous media using high aspect ratio interface elements
(2021-01-01)
Many reservoirs consist of fully saturated rock masses containing a very complex natural fracture network. In such cases a decrease in the fracture fluid pressure reduces its aperture due to an increase in the effective ...
First description of the female of the jumping spider Balmaceda nigrosecta Mello-Leitão (Salticidae, Dendryphantini, Marpissina)
(Pensoft Publishers, 2016-02)
The female of Balmaceda nigrosecta Mello-Leitão, 1945 is described and illustrated for the first time. In addition, this paper further illustrates the male, and provides the first known observations on the natural history ...
Modeling the hydrodynamic behavior of fractures and barriers in porous media using coupling finite elements
(2022-01-01)
Fractures, vugs and barriers are geological structures that strongly affect the fluid flow in porous media. While the first two lead to the formation of preferential flow paths, the latter blocks the flow and induces ...
Um exemplo de negação do conceito de elemento na filosofia natural
(2013)
The focus of this work is to present an example of refutation of the concept of element inside the seventeenth-century scientific revolution, mainly through Robert Boyle’s The Sceptical Chymist. On the first section of ...
Eigenproblems in timber structural elements with uncertain properties
(Springer, 2016-07)
A stochastic model of sawn timber structural elements of Argentinean Eucalyptusgrandis is applied to the study of two eigenproblems. One is the free vibrations problem which, after being solved, yields the natural frequencies ...
Major- and trace-element composition of olivine, perovskite, clinopyroxene, Cr-Fe-Ti oxides, phlogopite and host kamafugites and kimberlites, Alto Paranaiba, Brazil
(MINERALOGICAL ASSOC CANADA, 2008)
An integrated whole-rock petrographic and geochemical study has been carried out on kamafugites and kimberlites of the Late Cretaceous Alto Paranaiba igneous province, in Brazil, and their main minerals, olivine, clinopyroxene, ...
First report of a B chromosome in a natural population of Astyanax altiparanae (Characiformes, Characidae)
(Sociedade Brasileira de Genética, 2008-01-01)
Several species of the genus Astyanax have already been genetically studied, and B-chromosomes have been considered to be an interesting feature in some species of this group. In the present paper we report, for the first ...
On the harmonic response of plates with the shear deformation effect using the elastodynamic solution in the boundary element method
(Elsevier Sci LtdOxfordInglaterra, 2007)
Biogeography, vicariance and conservation of snakes of the neglected and endangered Caatinga region, north-eastern Brazil
(Wiley-Blackwell, 2014-05-01)
AimOur aims were to test the predictions of the vicariance model, searching for natural, non-random biogeographical units using data on snake distributions, and to assess the conservation of biogeographical patterns and ...
Coupled hydro-mechanical modelling of saturated fractured porous media with unified embedded finite element discretisations
(2022-04-01)
This paper presents the first unified finite element strategy for coupled hydro-mechanical (HM) analysis of fractured porous media where cracks arbitrarily intersect standard finite elements. This strategy is built by ...