Results 91 to 100 of about 1,877,814 (242)

Investigation of HZE particle fluxes as a space radiation hazard for future Mars missions

open access: yesHeliyon, 2019
Manned Mars missions planned in the near future of very low solar activity period and hence higher than acceptable radiation doses due mainly to the Galactic Cosmic Rays (GCR), would require special techniques and technological development for ...
Nagaraja Kamsali   +2 more
doaj   +1 more source

Cosmic Radiation Dose‐Rates for Civil Aviation in the Middle East: Vertical Structure, Solar Modulation, and Comparison With Models

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 17, 16 September 2026.
Abstract High‐altitude balloon measurements were conducted over southern Israel (30°35′N, 34°45′E; 850 m a.s.l., geomagnetic rigidity cutoff 10.3 GV) to characterize the vertical profiles of atmospheric ionization and radiation up to ∼35 km. Six balloon launches between October 2014 and August 2016 recorded the variability of atmospheric ionization ...
Roy Yaniv, Yoav Yair, Colin Price
wiley   +1 more source

An Alternative Approach to the Existence of Sunspot Equilibria [PDF]

open access: yes
This paper offers an alternative approach to the existence of sunspot equilibria. The economy has a single perishable good and fiat money within an overlapping generations framework with two possible extraneous events.
Haim Abraham
core  

Comparison between variations in solar UV radiation and sunspot parameters with Mg II daily index as a proxy

open access: yesPhysics Open
Solar UV radiation influence the Earth's climate and upper atmosphere. The UV emission from the Sun modulates with the sunspot cycle with an 11-year periodicity.
(G) Chandrika   +2 more
doaj   +1 more source

Molecular and Cellular Hallmarks of Age‐Related Vestibular Hair Cell Degeneration

open access: yesAdvanced Science, Volume 13, Issue 53, 24 September 2026.
This study utilizes single‐cell RNA‐seq transcriptomes, advanced imaging, and electrophysiology to examine universal and cell‐type‐specific aging signatures of vestibular hair cells. The study shows that impaired hair bundle function is a key driver of age‐related vestibular dysfunction.
Samadhi Kulasooriya   +10 more
wiley   +1 more source

The sunspot cycle and “auroral”Flayer irregularities

open access: yes, 1995
The use of the word “aurora” for many different observations at high latitudes has limited the concepts involved; this is particularly true for F region irregularities. Observations setting the position of the auroral oval (Starkov and Fel'dshtein, 1970)
Aarons, J., Rodger, A.S., Kersley, L.
core   +1 more source

Retinal microvascular changes are related to indicators of glymphatic dysfunction and small vessel disease in frontotemporal dementia

open access: yesAlzheimer's &Dementia, Volume 22, Issue 9, September 2026.
Abstract INTRODUCTION Retinal vascular alterations have been associated with cerebral small vessel disease (SVD) in frontotemporal dementia (FTD), but their relationship with magnetic resonance imaging (MRI)‐derived glymphatic‐related diffusion markers remains unclear.
William Robert Kwapong   +11 more
wiley   +1 more source

Stable sunspot equilibria in a cash-in-advance economy [PDF]

open access: yes
We analyze a monetary model with flexible labor supply, cash-inadvance constraints and seigniorage-financed government deficits. If the intertemporal elasticity of substitution of labor is greater than one, there are two steady states, one determinate ...
Ramon Marimon   +2 more
core  

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

open access: yesThe Anatomical Record, Volume 309, Issue 9, Page 2315-2330, September 2026.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Speculative attacks : unique sunspot equilibrium and transparency [PDF]

open access: yes, 2005
Models with multiple equilibria are a popular way to explain currency attacks. Morris and Shin (1998) have shown that, in the context of those models, unique equilibria may prevail once noisy private information is introduced.
Illing, Gerhard, Heinemann, Frank
core  

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