Results 111 to 120 of about 2,991,307 (240)

Energetic particles accelerated via turbulent magnetic reconnection in protoplanetary discs – I. Ionisation rates

Astronomy & Astrophysics
Context. Ionisation controls the chemistry, thermal balance, and magnetic coupling in protoplanetary discs. However, standard ionisation vectors such as stellar UV, X-rays, Galactic cosmic rays might not be efficient enough, as UV/X-rays are attenuated ...
Brunn V., Pucci F., Marcowith A., Padovani M., Rab Ch., Sauty Ch.   +5 more
doaj   +1 more source

Secondary antiprotons - A valuable cosmic-ray probe

The Astrophysical Journal, 1977
Even in the absence of antiprotons in the primary cosmic rays, a flux of secondary antiprotons will be produced in collisions between cosmic rays and interstellar gas. The predicted antiproton fraction increases with increasing cosmic-ray confinement, so that observations of antiprotons will provide a probe of models of cosmic-ray confinement.
openaire   +1 more source

Systematic Analysis of Plasma‐Derived Extracellular Vesicle‐Enriched Samples in Age‐Related Macular Degeneration Reveals Oxidative Stress Linked to Altered Lipid and Protein Profiles

Journal of Extracellular Biology, Volume 5, Issue 9, September 2026.
ABSTRACT Vision impairment caused by age‐related macular degeneration (AMD) is a global health priority. Retinal pathology is driven by ageing and exacerbated by genetic and environmental risk factors. Peripheral blood circulation is increasingly recognised as a contributor to disease initiation and progression, and a source of biomarkers to support ...
Marzena Kurzawa‐Akanbi, Jennifer Haggarty, Carina Hansohn, Mohamed T. Patel, Angela J. Cree, Peisi Teo, Milly Armstrong, Nathan Coles, Mark Platt, Helen Griffiths, Heather J. Cordell, Ahmad Khundakar, Pola Goldberg Oppenheimer, Phillip Whitfield, Andrew Lotery, Henning Urlaub, Sina Mozaffari‐Jovin, Majlinda Lako   +17 more
wiley   +1 more source

Embodied, Enacted, and Multimodal: Exploring Science Teachers’ Metaphors in Authentic Classroom Contexts

Science Education, Volume 110, Issue 5, Page 1469-1496, September 2026.
ABSTRACT Over the past decades, science education research has extensively examined the role of metaphors in teaching and learning science. However, much of the existing research has focused on verbal manifestations of metaphors, thereby overlooking aspects of metaphors that may occur in non‐verbal form. This study reconceptualises metaphors as dynamic
Magdalena Kersting, Priscila Kohler, Marianne Ødegaard   +2 more
wiley   +1 more source

Galactic Cosmic Ray Interaction with the Perseus Giant Molecular Cloud Using Geant4 Monte Carlo Simulation

Universe
Galactic cosmic rays (GCRs), composed of protons and atomic nuclei, are accelerated in sources such as supernova remnants and pulsar wind nebulae, reaching energies up to the PeV range.
Luan Torres, Luiz Augusto Stuani Pereira
doaj   +1 more source

Economic impact and effectiveness of radiation protection measures in aviation during a ground level enhancement

Journal of Space Weather and Space Climate, 2015
In addition to the omnipresent irradiation from galactic cosmic rays (GCR) and their secondary products, passengers and aircraft crew may be exposed to radiation from solar cosmic rays during ground level enhancements (GLE).
Matthiä Daniel, Schaefer Martin, Meier Matthias M.   +2 more
doaj   +1 more source

Assimilating GNSS Airborne Radio Occultation Bending Angles With MPAS–JEDI During a Sequence of Atmospheric Rivers

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract Global Navigation Satellite System (GNSS) airborne radio occultation (ARO) observations, collected during Atmospheric River Reconnaissance (AR Recon) campaigns, enhance AR sampling beyond traditional dropsondes. Assimilating ARO bending angles requires a forward operator accounting for ARO geometry and proper integration in a data assimilation
Ivette Hernández Baños, Jennifer S. Haase, Pawel Hordyniec, Bing Cao, Zhiquan Liu, Phuong‐Nghi Do   +5 more
wiley   +1 more source

Photon Propagation as a Probe for Fundamental Physics [PDF]

, 2009
In this thesis we show how light propagation can be used in order to constrain particle physics models beyond the Standard Model. We study in particular the effects of non standard physics on the polarization of cosmic microwave background radiation ...
Galaverni, Matteo
core  

Neutron Diffraction Evidence for Stress‐Induced Melting of Ice During Deformation of D2O‐Ice Ih—Fluorite Mixtures

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Water ice is an important rock‐forming mineral, both on the Earth and on various extraterrestrial bodies. Naturally occurring ice is often “dirty”–an intimate mixture with harder mineral grains, which can have significant effects on the bulk properties of the aggregate. We have used neutron powder diffraction, with in situ triaxial deformation,
Ceri A. Middleton, A. Dominic Fortes, Peter M. Grindrod, Shu Yan Zhang, Stephen J. Covey‐Crump, Peter R. Sammonds, Ian G. Wood, David P. Dobson, Lidunka Vočadlo, Simon A. Hunt   +9 more
wiley   +1 more source

Personalization and Fortification of In‐Space Manufactured Emulsified Beverages for Long‐Term Space Travel

Comprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 5, September 2026.
ABSTRACT The current trend of individualized food items (nutrient content and flavor) can be particularly valuable to support people's health and well‐being in isolated environments where access to fresh foods and diverse nutrition is difficult. At the same time, bioactive compounds and micronutrients can be employed to countermeasure any health ...
Svenja Schmidt, Ian Fisk, Ni Yang, Maria Saarela, Volker Hessel   +4 more
wiley   +1 more source