Exploració per tema "evolution"
Ara es mostren els items 1-12 de 12
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3D bite modeling and feeding mechanics of the largest living amphibian, the Chinese Giant Salamander Andrias davidianus (Amphibia:Urodela)
(2015-04-08)
Article
Accés obertBiting is an integral feature of the feeding mechanism for aquatic and terrestrial salamanders to capture, fix or immobilize elusive or struggling prey. However, little information is available on how it works and the ... -
Effect of of ageing and temperature on the fatigue behaviour of bitumens
(2015-12)
Article
Accés obertBitumen ageing plays a significant role in determining the resistance of asphalt mixes to fatigue cracking. Regardless of the type of ageing (oxidation during manufacture or during the service life), hardening effects ... -
Finite element analysis of the Cingulata jaw: an ecomorphological approach to Armadillo's diets
(2015-04-28)
Article
Accés obertFinite element analyses (FEA) were applied to assess the lower jaw biomechanics of cingulate xenarthrans: 14 species of armadillos as well as one Pleistocene pampathere (11 extant taxa and the extinct forms Vassallia, ... -
Natural formations at the Earth-Moon triangular point in perturbed restricted problems
(2015-07-01)
Article
Accés obertPrevious studies for small formation flying dynamics about triangular libration points have determined the existence of regions of zero and Minimum Relative Radial Acceleration with respect to the nominal trajectory, that ... -
On the morphodynamic stability of intertidal environments and the role of vegetation
(Elsevier, 2016-07-01)
Article
Accés obertWe describe the coupled biotic and abiotic dynamics in intertidal environments using a point model that includes suspended sediment deposition, wave-and current-driven erosion, biofilm sediment stabilization, and sediment ... -
On the probability of planarity of a random graph near the critical point
(2015-03-01)
Article
Accés obertLet G(n, M) be the uniform random graph with n vertices and M edges. Erdos and Renyi (1960) conjectured that the limiting probability; lim(n ->infinity) Pr{G(n, n/2) is planar}; exists and is a constant strictly between 0 ... -
Origin of waters from small springs located at the northern coast of Chile, in the vicinity of Antofagasta
(2014-05)
Article
Accés obertThe origin of waters from small springs located at the hyper-arid northern coast of Chile, in the vicinity of Antofagasta, is discussed after hydrogeochemical and isotopic studies and supported by groundwater flow hydrodynamic ... -
Prototips 3D. Eina de suport a la docència
(Universitat Politècnica de Catalunya, 2023-06-17)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorL'educació s'enfronta a la constant necessitat d'innovar i adaptar-se als canvis tecnològics. L'evolució tecnològica ha permès modificar els mètodes tradicionals d'ensenyament afavorint el disseny d'estratègies educatives ... -
Residual stress distribution of a 6061-T6 aluminum alloy under shear deformation
(2016-07-18)
Article
Accés obertThere is a lack of information with regards to the friction effect in ECAPed aluminum alloys, even though it might substantially modify the deformation at the surface. In this work, the friction effect at the surface and ... -
Spermiogenesis and biflagellate spermatozoon of the teleost fish Lampanyctus crocodilus (Myctophiformes, Myctophidae): ultrastructure and characterisation of its sperm basic nuclear proteins
(2015-08-01)
Article
Accés obertWe undertook an ultrastructural study of the spermiogenesis of the lanternfish Lampanyctus crocodilus (Myctophiformes, Myctophidae) with special emphasis on the condensation of chromatin and the biochemical characterisation ... -
Toward an evolved concept of landrace
(2017-02-01)
Article
Accés obertThe term “landrace” has generally been defined as a cultivated, genetically heterogeneous variety that has evolved in a certain ecogeographical area and is therefore adapted to the edaphic ... -
Zero drift regions and control strategies to keep satellite in formation around triangular libration point in the restricted Sun-Earth-Moon scenario
(2015-10-01)
Article
Accés obertIn this work, we are interested in avoiding large variations in the mutual distances among multiple satellites and also in controlling their geometric configuration around an Earth Moon triangular point. Previous studies ...