Now showing items 11-20 of 1045
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
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 ...
Chemical Periodic Table
Elemento Natural Destacado “Sistema Espeleolacustre de Zapata”. Plan de Manejo 2013 – 2017.
(Empresa Nacional para la Protección de la Flora y la Fauna. MINAGRI, 2012)
El Sistema Espeleolacustre de Zapata está constituido por un grupo de dolinas de disolución, alineadas geotectónicamente dentro de un mismo paquete cársico, donde se desarrollan características edafológicas, hidrológicas ...
Elemental composition of airborne particulate matter from Santiago City, Chile, 1976
(Air Pollution Control Association, 1984)
In Chile, the State Public Health Office (Ministerio de Salud Pública) is responsible for pollution control and for air quality. This office has been monitoring only toxic gases and total suspended particulate matter.1.2 ...
An experimentally validated finite element formulation for modeling 3D rotational energy harvesters
Piezoelectric energy harvesting devices convert mechanical energy into electrical energy due to the mechanical deformations of the structures. Energy harvesting prototypes are used to feed low-power electronic devices and ...
Imprints of fast-rotating massive stars in the Galactic Bulge
(NATURE PUBLISHING GROUP, 2011)
The first stars that formed after the Big Bang were probably massive(1), and they provided the Universe with the first elements heavier than helium (`metals`), which were incorporated into low-mass stars that have survived ...
Element substitution by living organisms: The case of manganese in mollusc shell aragonite
(Nature Publishing Group, 2016-03)
Determining the manganese concentration in shells of freshwater bivalves provides a unique way to obtain information about climate and environmental changes during time-intervals that pre-date instrumental data records. ...
The pairing of X and Y chromosomes during meiotic prophase in the marsupial species Thylamys elegans is maintained by a dense plate developed from their axial elements
Unlike eutherian males, pairing of the sex chromosomes in marsupial males during the first meiotic prophase is not mediated by a synaptonemal complex. Instead, a specific structure, the dense plate, develops during pachytene ...