Results 81 to 90 of about 6,222 (212)

The Burden of Breast Cancer and its Attributable Risk Factors in 204 Countries and Territories, 1990–2021: Results From the Global Burden of Disease Study 2021

open access: yesCancer Innovation, Volume 5, Issue 2, April 2026.
This study integrates breast cancer data from the Global Burden of Disease across 204 countries and territories from 1990 to 2021, utilizing Bayesian hierarchical models to correct biases and quantify spatiotemporal trends. It analyzes geographic and population‐level disparities in risk factors, constructs a precision prevention framework based on ...
Jiahui Huang   +10 more
wiley   +1 more source

Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities

open access: yes, 2009
We present three-dimensional magnetohydrodynamic (MHD) simulations of superbubbles, to study the importance of MHD effects in the interpretation of images from recent surveys of the Galactic plane. These simulations focus mainly on atmospheres defined by
A. R. Taylor   +40 more
core   +1 more source

Study of equatorial plasma bubble during January to April 2012 over Kolhapur (India) [PDF]

open access: yes, 2016
Over 53 nights of all sky airglow imager data collected during January-April 2012 from the low latitude station Kolhapur (16.68°N, 74.26°E; 10.6°N dip latitude) have been analyzed to study the F-region dynamics through the imaging of OI 630 nm emission ...
Banola, S   +10 more
core   +1 more source

A New Global Climatological Model of the Equatorial Ionospheric Vertical E × B Drift: Integrating Ground‐Based Magnetometer, Radar, and Satellite Data Sets

open access: yesEarth and Space Science, Volume 13, Issue 4, April 2026.
Abstract We present a new empirical vertical E×B $\mathbf{E}\times \mathbf{B}$ drift model developed using ground‐based magnetometer, radar, and satellite data over equatorial latitude regions. We first implement an algorithm relating magnetometer derived equatorial electrojet (EEJ) and vertical ion plasma drift (equivalent to vertical E×B $\mathbf{E ...
John Bosco Habarulema   +9 more
wiley   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
wiley   +1 more source

A Dynamical System Analysis of Electric Field Fluctuations Inside Equatorial Plasma Bubbles: A Case Study Using CSES‐01 Observations

open access: yesGeophysical Research Letters
This study investigates the spectral and dynamic characteristics of turbulent fluctuations in the electric field within equatorial plasma bubbles using data from the Electric Field Detector aboard the China Seismo‐Electromagnetic Satellite‐01. We applied
P. De Michelis   +4 more
doaj   +1 more source

Modeling the effects of equatorial plasma bubbles on the oblique propagation of high-frequency electromagnetic waves

open access: yesFrontiers in Astronomy and Space Sciences
The ionosphere, as an essential component of the Earth’s space environment, contains free electrons that influence the amplitude and phase of radio signals.
Ziyi Zhao   +6 more
doaj   +1 more source

A new model for the substorm growth phase [PDF]

open access: yes, 2014
Thesis (Ph.D.) University of Alaska Fairbanks, 2014.The physics of geomagnetic substorms has been under debate for a long time. In particular, the formation of a thin current sheet (CS) is a central unresolved problem because it provides the magnetotail ...
Hsieh, Min-Shiu, 謝旻秀
core  

Climatology of Plasma Irregularities Using ROTI Index From 2008 to 2023 in East West Asia

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract This study investigates characteristics of ionospheric irregularities over the East–West Asian equatorial region using the Rate of TEC Index (ROTI) derived from Global Navigation Satellite System (GNSS) measurements. Data from four stations (GUAM, PIMO, CUSV, and IISC) were analyzed for 2008–2023, covering solar cycle (SC) 24 and the ascending
Pandit Drabindra   +2 more
wiley   +1 more source

Dynamic spectral characteristics of high-resolution simulated equatorial plasma bubbles

open access: yesProgress in Earth and Planetary Science, 2018
Manifestations of severe nighttime equatorial ionospheric disturbances have been observed for decades. It is generally accepted that the phenomena are caused by large depletions, referred to as equatorial plasma bubbles (EPBs), which are initiated on the
Charles Rino   +2 more
doaj   +1 more source

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