Física Aplicada: Enviaments recents
Ara mostrant els elements 41-60 de 556
Identifying Storm Hotspots and the Most Unsettled Areas in Barcelona by Analysing Significant Rainfall Episodes from 2013 to 2018
Urban floods repeatedly threaten Barcelona, damaging the city infrastructure and endangering the safety of the population. The urban planning of the city, the socioeconomic distribution, its topography, and the characteristics ...
Multi-model assessment of the late-winter extra-tropical response to El Niño and La Niña
El Niño-Southern Oscillation (ENSO) is known to affect the Northern Hemisphere tropospheric circulation in late-winter (January-March), but whether El Niño and La Niña lead to symmetric impacts and with the same underlying ...
Monitoring storm evolution using a high-density seismic network
Data acquired by a dense seismic network deployed in the Cerdanya basin (Eastern Pyrenees) is used to track the temporal and spatial evolution of meteorological events such as rainfall episodes or thunderstorms. Comparing ...
The Evolution of Communicating the Uncertainty of Climate Change to Policymakers: A Study of IPCC Synthesis Reports
The Intergovernmental Panel on Climate Change (IPCC) reports on climate change have served to alert both the public and policymakers about the scope of the predicted changes and the effects they would have on natural and ...
Volumetric Lissajous confocal microscopy with tunable spatiotemporal resolution
Dynamic biological systems present challenges to existing three-dimensional (3D) optical microscopes because of their continuous temporal and spatial changes. Most techniques are rigid in adapting the acquisition parameters ...
On the behavior of vector light needles using modulation functions with topological charge
In the present communication, we describe how to produce long light distributions in the focal area of a high numerical aperture optical system using a custom modulation function with spiral charge. This analysis expands ...
PENGEOM A general-purpose geometry package for Monte Carlo simulation of radiation transport in complex material structures (New Version Announcement)
A new version of the code system pengeom, which provides a complete set of tools to handle different geometries in Monte Carlo simulations of radiation transport, is presented. The distribution package consists of a set ...
Crystal growth characterization of polycrystalline silicon films obtained by hot-wire chemical vapour deposition
Polycrystalline silicon (poly-Si) films were obtained at moderate temperatures (280-500ºC) from a mixture of silane and hydrogen in a hot wire CVD reactor. SEM and TEM results revealed a columnar growth of poly-Si grains ...
Polarimetric 3D integral imaging in photon-starved conditions
We develop a method for obtaining 3D polarimetric integral images from elemental images recorded in low light illumination conditions. Since photon-counting images are very sparse, calculation of the Stokes parameters and ...
Weather Types Affect Rain Microstructure: Implications for Estimating Rain Rate
Quantitative precipitation estimation (QPE) through remote sensing has to take rain microstructure into consideration, because it influences the relationship between radar reflectivity Z and rain intensity R. For this ...
Inter-comparison and potential synergies of three methods for weather radar antenna pointing assessment
Three methods for estimation of the weather radar antenna azimuth and elevation pointing offsets are compared. Two of the methods reviewed use the known location of the sun as a reference. The first of these methods is ...
Light-induced strain and its correlation with the optical absorption at charged domain walls in polycrystalline ferroelectrics
Photostrictive materials have a growing interest because of their great potential as light-driven actuators, among other optomechanical applications. In this context, the optical control of macroscopic strain in ferroelectrics ...
Microstructure of highly oriented, hexagonal, boron nitride thin films grown on crystalline silicon by radio frequency plasma-assisted chemical vapor deposition
We present a high‐resolution electron microscopy study of the microstructure of boron nitride thin films grown on silicon (100) by radio‐frequency plasma‐assisted chemical vapor deposition using B2H6 (1% in H2) and NH3 ...
Asymmetric Scattering and Reciprocity in a Plasmonic Dimer
We study the scattering of polarized light by two equal corner stacked Au nanorods that exhibit strong electromagnetic coupling. In the far field, this plasmonic dimer manifests very prominent asymmetric scattering in the ...
Printability conditions for an all-solid-state laser transfer
Several laser technologies exist capable of adding solid materials to a targeted area of a substrate, including photopolymerization, laser sintering, or laser-induced forward transfer. However, the added material normally ...
The Land Surface Interactions with the Atmosphere over the IberianSemi-Arid Environment (LIAISE) field campaign
One of the greatest challenges facing environmental science is to better understand the impacts of predicted future changes in the terrestrial hydrological cycle. It has been recognized that human activities play a key ...
Thin Film Transistors obtained by Hot-Wire CVD
Hydrogenated microcrystalline silicon films obtained at low temperature (150-280°C) by hot wire chemical vapour deposition at two different process pressures were measured by Raman spectroscopy, X-ray diffraction (XRD) ...
Blue luminescence at room temperature in defective MgO films
Luminescence spectroscopy has been used to characterize MgO films prepared by rf-sputtering. A clear correlation is found between the appearance of an emission peak centered at approximately 460 nm and the detection of ...
Low cost vacuum web coating system
A low cost solution for a mini roll to roll web coating system is presented. The design is very simple and involves only three active rolls, two winding/unwinding rolls and a cooling drum. No extra load cells are used to ...
Laser-induced growth of titanium nitride microcolumns on biased titanium targets
Laser processing of solid surfaces has been extensively investigated during the last decade because of its large variety of applications in recrystallization, doping, smoothing, hardening, or compound formation.1 ...
