Results 51 to 60 of about 663,853 (299)

A more realistic representation of overshoot at the base of the solar convective envelope as seen by helioseismology [PDF]

open access: yes, 2011
The stratification near the base of the Sun's convective envelope is governed by processes of convective overshooting and element diffusion, and the region is widely believed to play a key role in the solar dynamo. The stratification in that region gives
Asplund   +64 more
core   +2 more sources

Dark matter and exotic neutrino interactions in direct detection searches

open access: yesJournal of High Energy Physics, 2017
We investigate the effect of new physics interacting with both Dark Matter (DM) and neutrinos at DM direct detection experiments. Working within a simplified model formalism, we consider vector and scalar mediators to determine the scattering of DM as ...
Enrico Bertuzzo   +4 more
doaj   +1 more source

Determining the initial helium abundance of the Sun

open access: yes, 2010
We determine the dependence of the initial helium abundance and the present-day helium abundance in the convective envelope of solar models ($\yim$ and $\ysm$ respectively) on the parameters that are used to construct the models.
Aldo M. Serenelli   +31 more
core   +1 more source

Vacuum and MSW interpretations of solar neutrino data with the LNW mass matrix [PDF]

open access: yes, 2000
The Lehmann-Newton-Wu mass matrix, which was recently applied to neutrinos, is further investigated. The analytic results presented earlier are confirmed numerically for the solar density profile of the Standard Solar Model.
Altarelli   +14 more
core   +3 more sources

Microscopic Physics in the Solar Standard Model [PDF]

open access: yesInternational Astronomical Union Colloquium, 1993
AbstractThe microphysics of the solar standard model is revised. We discuss the contribution of composition, nuclear reaction rates, screening effect and opacity (OPAL project) to the theoretical predictions on neutrino flux and acoustic modes.
Ilidio Lopes, Sylvaine Turck-Chieze
openaire   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Challenging Lorentz noninvariant neutrino oscillations without neutrino masses [PDF]

open access: yes, 2007
We show that the combined data from solar, long-baseline and reactor neutrino experiments can exclude the generalized bicycle model of Lorentz noninvariant direction-dependent and/or direction-independent oscillations of massless neutrinos.
Barger, V., Marfatia, D., Whisnant, K.
core   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Light scalar dark matter at neutrino oscillation experiments

open access: yesJournal of High Energy Physics, 2018
Couplings between light scalar dark matter (DM) and neutrinos induce a perturbation to the neutrino mass matrix. If the DM oscillation period is smaller than ten minutes (or equivalently, the DM particle is heavier than 0.69×10−17 eV), the fast-averaging
Jiajun Liao   +2 more
doaj   +1 more source

The role of electron-screening deformations in solar nuclear fusion reactions and the solar neutrino puzzle [PDF]

open access: yes, 2000
Thermonuclear fusion reaction rates in the solar plasma are enhanced by the presence of the electron cloud that screens fusing nuclei. The present work studies the influence of electron screening deformations on solar reaction rates in the framework of ...
Bahcall   +19 more
core   +2 more sources

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