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Mostrando ítems 1-10 de 42
Artículo
Propagation studies for the construction of atomic macro-coherence in dense media as a tool to investigate neutrino physics
(EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2017)
In this manuscript we review the possibility of inducing large coherence in a macroscopic dense target by using adiabatic techniques. For this purpose we investigate the degradation of the laser pulse through propagation, ...
Artículo
Formation of antireflection Zn/ZnO core–shell nano-pyramidal arrays by O2 + ion bombardment of Zn surfaces
(Royal Society of Chemistry, 2017-08-25)
ZnO is probably one of the most studied oxides since ZnO nanostructures are a very rich family of nanomaterials with a broad variety of technological applications. Although several chemical techniques offer the possibility ...
Artículo
Factors related to 41K interference on 41Ca AMS measurements
(ScienceDirect, 2019-01)
Dealing with the 41K interference during 41Ca measurement with low energy AMS systems is challenging. The detection of 39K to correct the measured 41Ca/40Ca ratios is a powerful tool that improves precision and accuracy. ...
Artículo
Pterobreathers in a model for a layered crystal with realistic potentials: Exact moving breathers in a moving frame
(American Physical Society, 2019-08-12)
In this article we perform a thorough analysis of breathers in a one-dimensional model for a layered silicate for which there exists fossil and experimental evidence of moving excitations along the close-packed lines of ...
Artículo
The Zanclean megaflood of the Mediterranean – Searching for independent evidence
(Elsevier, 2020)
About six million years ago, the Mediterranean Sea underwent a period of isolation from the ocean and widespread salt deposition known as the Messinian Salinity Crisis (MSC), allegedly leading to a kilometer-scale level ...
Artículo
Determination of the Optical Constants of Gold Nanoparticles from Thin-Film Spectra
(American Chemical Society, 2015-04-06)
We determine the optical properties of nanocomposites comprising gold nanoparticles embedded in a titania matrix using spectroscopic ellipsometry. We then apply the spectral representation formalism due to Bergman, to ...
Artículo
Long-term high temperature oxidation of CrAl(Y)N coatings in steam atmosphere
(ScienceDirect, 2014-03)
The oxidation resistance of CrAl(Y)N coatings deposited by reactive magnetron sputtering on P92 steel substrates was tested at 650 C in 100% steam atmosphere up to 2000 h of oxidation. Mass gain measurements and characterisation ...
Artículo
Time-shift invariance determines the functional shape of the current in dissipative rocking ratchets
(2013)
Ratchets are devices that are able to rectify an otherwise oscillatory behavior by exploiting an asymmetry of the system. In rocking ratchets, the asymmetry is induced through a proper choice of external forces and modulations ...
Artículo
Impact of gold-mining activity on trace elements enrichment in the West African estuaries: The case of Pra and Ankobra rivers with the Volta estuary (Ghana) as the reference
(Elsevier, 2018)
This study aimed at assessing trace element concentrations in two representative estuaries of Ghana (Pra and Ankobra) affected by gold-mining, relative to the levels of the unaffected Volta estuary. Surficial sediments ...
Artículo
An exploratory modelling study on sediment transport during the Zanclean flood of the Mediterranean
(Springer, 2019)
A nearly 400-km-long erosion channel through the Strait of Gibraltar has been interpreted as evidence for a catastrophic refll of the Mediterranean at the end of the Messinian salinity crisis, 5.33 million years ago. ...