Results 91 to 100 of about 23,252 (283)

Material‐Induced Nuclear Deformation Controls Chromatin Architecture in Adipose Stem Cells

open access: yesAdvanced Science, EarlyView.
Tuning cell and cytoskeleton mechanics modulated nuclear shape and heterochromatin organization in ASCs. Distinct cytoskeletal architectures induced nuclear morphologies from oblate to prolate ellipsoids. Large elongated cells with a structured actin cap exhibited high nuclear strain, driving nuclear envelope deformation and heterochromatin ...
Carlo F. Natale   +6 more
wiley   +1 more source

Characteristics of Ionospheric Irregularities Using GNSS Scintillation Indices Measured at Jang Bogo Station, Antarctica (74.62°S, 164.22°E)

open access: yesSpace Weather, 2020
Global Navigation Satellite System (GNSS) signals strongly depend on the ionospheric conditions, which are composed of electrons and ions generated by solar radiation and particle precipitation.
Junseok Hong   +7 more
doaj   +1 more source

Formation of polar cap patches measured by the RISR radar pair [PDF]

open access: yes, 2017
18th EISCAT symposiumSession E4: Aurora and airglowMay 30 (Tue), National Institute for Japanese ...

core   +1 more source

Polar Field Reversal Observations with Hinode

open access: yes, 2012
We have been monitoring yearly variation in the Sun's polar magnetic fields with the Solar Optical Telescope aboard {\it Hinode} to record their evolution and expected reversal near the solar maximum.
Choudhuri   +21 more
core   +1 more source

Microscale Mapping of Fiber Strain and Damage in Composite Wrinkled Laminates Using Computed Tomography Assisted Wide‐Angle X‐Ray Scattering

open access: yesAdvanced Science, EarlyView.
This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong   +7 more
wiley   +1 more source

Solar cycle and seasonal variations of the GPS phase scintillation at high latitudes

open access: yesJournal of Space Weather and Space Climate, 2018
We present the long-term statistics of the GPS phase scintillation in the polar region (70°–82° magnetic latitude) by using the GPS scintillation data from Ny-Ålesund for the period 2010–2017.
Jin Yaqi   +3 more
doaj   +1 more source

Meridional motions of the afternoon radar aurora, auroral electrojets, and absorption patches under variable IMF conditions [PDF]

open access: yesAnnales Geophysicae, 2004
The meridional motions of the CUTLASS HF and STARE VHF coherent echoes, IMAGE equivalent electrojet currents, and IRIS absorption patches during the postnoon/early-evening event of 14 February 2000 are presented.
R. A. Makarevitch   +4 more
doaj   +1 more source

磁気嵐に伴う極冠電離圏でのプラズマ密度構造に関する研究 [PDF]

open access: yes, 2016
The polar-cap ionosphere is directly coupled with the magnetosphere, which makes the region unique compared with the low- and mid-latitude ionosphere. Because of this coupling with the magnetosphere, the polar cap ionosphere is disturbed during magnetic ...
Jun Sakai, 坂井 純
core   +2 more sources

Highly accurate special quadrature methods for Stokesian particle suspensions in confined geometries

open access: yes, 2020
Boundary integral methods are highly suited for problems with complicated geometries, but require special quadrature methods to accurately compute the singular and nearly singular layer potentials that appear in them.
Bagge, Joar, Tornberg, Anna-Karin
core   +1 more source

F layer ionization patches in the polar cap

open access: yesJournal of Geophysical Research: Space Physics, 1984
Ground‐based optical and digital ionosonde measurements were conducted at Thule, Greenland to measure ionospheric structure and dynamics in the nighttime polar cap F layer. These observations showed the existence of large‐scale (800–1000 km) plasma patches drifting in the antisunward direction during a moderately disturbed (Kp ≥ 4) period. Simultaneous
E. J. Weber   +6 more
openaire   +2 more sources

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