Results 61 to 70 of about 487,950 (322)

Physical Retrieval of Rain Rate from Ground-Based Microwave Radiometry

open access: yesRemote Sensing, 2021
Because of its clear physical meaning, physical methods are more often used for space-borne microwave radiometers to retrieve the rain rate, but they are rarely used for ground-based microwave radiometers that are very sensitive to rainfall.
Wenyue Wang   +2 more
doaj   +1 more source

Gravitational settling in pulsating subdwarf B stars and their progenitors [PDF]

open access: yes, 2009
Diffusion of atoms can be important during quiescent phases of stellar evolution. Particularly in the very thin inert envelopes of subdwarf B stars, diffusive movements will considerably change the envelope structure and the surface abundances on a short
A. A. Thoul   +71 more
core   +4 more sources

Analytical expressions for radiative opacities of low Z plasmas

open access: yesJournal of Physics: Conference Series, 2010
In this work we obtain analytical expressions for the radiative opacity of several low Z plasmas (He, Li, Be, and B) in a wide range of temperatures and densities. These formulas are obtained by fitting the proposed expression to mean opacities data calculated by using the code ABAKO/ RAPCAL. This code computes the radiative properties of plasmas, both
Garcia Rubiano, Jesus   +6 more
openaire   +3 more sources

Through Diamond Robust Surface Enhanced Raman Spectroscopy

open access: yesAdvanced Functional Materials, EarlyView.
Thin film diamond growth offers a unique opportunity for Surface Enhanced Raman Spectroscopy (SERS); the encapsulation of plasmonic nanostructures within a transparent, chemically stable, and physically robust coating. The diamond acts as both a window and protective layer, enabling illumination of the plasmonic nanostructures through the diamond ...
Kieran N. Twaddle   +4 more
wiley   +1 more source

The Opacity Project: R-Matrix Calculations for Opacities of High-Energy-Density Astrophysical and Laboratory Plasmas

open access: yesAtoms
Accurate determination of opacity is critical for understanding radiation transport in both astrophysical and laboratory plasmas. We employ atomic data from R-Matrix calculations to investigate radiative properties in high-energy-density (HED) plasma ...
Anil K. Pradhan, Sultana N. Nahar
doaj   +1 more source

Important consequences of atomic diffusion inside main-sequence stars: opacities, extra-mixing, oscillations

open access: yesEPJ Web of Conferences, 2017
Atomic diffusion, including the effects of radiative accelerations on individual elements, leads to important variations of the chemical composition inside stars.
Deal M., Vauclair S., Richard O.
doaj   +1 more source

Estimation of the radiation budget during MOSAiC based on ground-based and satellite remote sensing observations [PDF]

open access: yesAtmospheric Chemistry and Physics
An accurate representation of the radiation budget is essential for investigating the impact of clouds on the climate system, especially in the Arctic, an environment highly sensitive to complex and rapid environmental changes.
C. Barrientos-Velasco   +9 more
doaj   +1 more source

The Light Curve of Supernova 1987A: The Structure of the Presupernova and Radioactive Nickel Mixing [PDF]

open access: yes, 2003
We have studied the influence of the presupernova structure and the degree of Ni-56 mixing on the bolometric light curve of SN 1987A in terms of radiation hydrodynamics in the one-group approximation by abandoning LTE and by taking into account ...
Utrobin, V. P.
core   +1 more source

4D‐Printed Magneto‐Plasmonic Microrobots for Programmable Spatiotemporal De‐Icing

open access: yesAdvanced Functional Materials, EarlyView.
A 4D‐printing strategy is introduced to achieve programmable de‐icing devices. By aligning gold–magnetite nanofillers within a photosensitive resin, the printed structures exhibit dual magnetic and plasmonic functionalities, enabling precise spatio‐temporal ice removal through thermoplasmonic effects.
Amélie Pérot   +7 more
wiley   +1 more source

Instabilities in the Envelopes and Winds of Very Massive Stars

open access: yes, 2014
The high luminosity of Very Massive Stars (VMS) means that radiative forces play an important, dynamical role both in the structure and stability of their stellar envelope, and in driving strong stellar-wind mass loss.
A. A. Belyanin   +53 more
core   +1 more source

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