Results 91 to 100 of about 658,118 (329)

Propagating Linear Waves in Convectively Unstable Stellar Models: a Perturbative Approach

open access: yes, 2013
Linear time-domain simulations of acoustic oscillations are unstable in the stellar convection zone. To overcome this problem it is customary to compute the oscillations of a stabilized background stellar model.
Birch, Aaron C.   +2 more
core   +1 more source

Interior opacities and the standard solar model

open access: yesThe Astrophysical Journal, 1992
We investigate the sensitivity to changes in the interior opacities of a number of solar parameters commonly inferred from standard solar models. In particular we discuss the sensitivity of the central temperature, the radius at the base of the convective zone, and the degree of lithium depletion to changes in the opacity prescription.
John Faulkner, Fritz J. Swenson
openaire   +1 more source

Electricity Generation From Ambient Water Evaporation in the Absence of Sunlight via PVA‐Based Porous Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
In this article, a water‐evaporation driven energy harvester is devised that works even in the absence of sunlight. This is achieved by combining PVA hydrogel with thermoelectrics (TEG) to directly capture energy from water evaporation. Under mild conditions (RH 40%, T of 26 °C, and 2.8 m s−1 wind), 1.71 mW (1.02 W m−2) power can be generated, >3 fold ...
Zichen Gong, Ady Suwardi, Jing Cao
wiley   +1 more source

Joint analysis of Borexino and SNO solar neutrino data and reconstruction of the survival probability

open access: yesЯдерна фізика та енергетика, 2017
Solar neutrino oscillations are supported by KamLAND’s antineutrino measurements, but certain solar neutrino data – the observed shape of the 8B flux and the difference between day and night counting rates measured in Super-K – do not fit well with the ...
Francesco Vissani
doaj  

What drives solar-EUV jets seen in equatorial coronal holes?

open access: yesResults in Physics, 2016
Recent observations of jets in solar coronal holes that include multi-wavelength data such as EUV movies have shown that most of those jets are not driven in the way suggested by the standard model.
M.L. Adams, R.L. Moore
doaj   +1 more source

Ipopv2: Photoionization of Ni XIV -- a test case [PDF]

open access: yes, 2013
Several years ago, M. Asplund and coauthors (2004) proposed a revision of the Solar composition. The use of this new prescription for Solar abundances in standard stellar models generated a strong disagreement between the predictions and the observations
Delahaye, F.   +3 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

A New Solar Radiation Model for a Power System Reliability Study

open access: yesIEEE Access, 2019
The dwindling number of conventional power resources and its environmental impact has motivated a transition to renewable energy sources, such as solar power.
Hamza Abunima   +2 more
doaj   +1 more source

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