Results 311 to 320 of about 20,479,373 (356)
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On the structure of frictional impacts
Acta Mechanica, 2017Many processes in machines and mechanisms are accompanied by impacts with friction. They arise by short-time contacts between two or more bodies, and they generate energy losses mainly due to friction in tangential contact directions. During the last three decades, a couple of impact models based on the theory of rigid body contacts were established ...
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Impact on a head-neck structure
Journal of Biomechanics, 1976Abstract An analytical and experimental study was executed involving non-destructive, axisymmetric impact on a fluid-filled shell constrained by a viscoelastic, artificial neck—a system intended to simulate a human head-neck structure. The shel material was considered to be homogeneous, isotropic and elastic, while the fluid was regarded as inviscid ...
Benjamin Landkof +2 more
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Graphene ultracapacitors: structural impacts
Physical Chemistry Chemical Physics, 2013The structural effects of graphene on the electrochemical properties of graphene-based ultracapacitors are investigated for the first time, where the competitive impacts resulting from the edge content, specific surface area, edge/basal defects, oxygen-containing groups and metal oxides/surfactant impurities are taken into consideration, demonstrating ...
Wentao Deng +5 more
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Impact Structure and Morphology
2010The Mjolnir crater (Fig. 3.1) was first interpreted as an impact structure by Gudlaugsson (1993) based on its geophysical signature and overall geological setting. This inference was derived from a limited amount of multichannel seismic profiles, and regional gravity and magnetic profiles.
Jan Inge Faleide +4 more
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Modeling of Impacts on Sandwich Structures
Mechanics of Advanced Materials and Structures, 2012In aeronautics, passenger safety and reliability of structures are essential aspects. Helicopter blades are particularly sensitive to impact solicitations but modeling these phenomena is still difficult and experimental tests often replace the prediction. This study will be focused on the modeling of an impact on the skin of the blade. It is equivalent
Navarro, Pablo +4 more
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Acta Crystallographica Section D Biological Crystallography, 2007
Crystallographers are increasingly determining structures of protein constructs that include His tags. Many have taken for granted that these tags have little effect on the native structure. This paper surveys and compares crystal structures with and without His tags.
Mike Carson +4 more
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Crystallographers are increasingly determining structures of protein constructs that include His tags. Many have taken for granted that these tags have little effect on the native structure. This paper surveys and compares crystal structures with and without His tags.
Mike Carson +4 more
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Inversion of regional gravity gradient data over the Vredefort Impact Structure, South Africa
, 2011We present the results for 3D inversion of gravity gradiometry data over the Vredefort Impact Structure in South Africa. With the rapidly growing field of gravity gradiometry, an investigation into the extraction of information from multiple components ...
Cericia Martinez, Yaoguo Li
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Environmental science and pollution research international, 2022
Tarekul Islam +4 more
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Tarekul Islam +4 more
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Meteorites and impact structures in Chad
Journal of African Earth SciencesThe large surface of Chad (fifth largest country in Africa) as well as a desert climate over much of its area, makes the country a potentially prolific place to recover meteorites and identify impact structures. However, only two meteorite finds have so far been reported, from Tibesti, and two probable falls have been recovered in the vicinity of the ...
Rochette, P. +3 more
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1987
Studies carried out in the last ten years resulted in the recognition of several circular structures in the Brazilian territory which have, as common characteristics, the presence of similarities with well-known structures in other countries and planets attributed to impact with celestial bodies, and the absence of evidence for a terrestrial ...
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Studies carried out in the last ten years resulted in the recognition of several circular structures in the Brazilian territory which have, as common characteristics, the presence of similarities with well-known structures in other countries and planets attributed to impact with celestial bodies, and the absence of evidence for a terrestrial ...
openaire +2 more sources