Results 41 to 50 of about 24,672 (257)

Ionosphere-magnetosphere coupling and field-aligned currents

Revista Brasileira de Ensino de Física
It is presented in this paper a review of one of several interactions between the magnetosphere and the ionosphere through the field-aligned currents (FACs).
D. Oliveira
doaj   +1 more source

Auroral streamers: characteristics of associated precipitation,convection and field-aligned currents [PDF]

Annales Geophysicae, 2004
During the long-duration steady convection activity on 11 December 1998, the development of a few dozen auroral streamers was monitored by Polar UVI instrument in the dark northern nightside ionosphere.
V. A. Sergeev, K. Liou, P. T. Newell, S.-I. Ohtani, M. R. Hairston, F. Rich   +5 more
doaj   +1 more source

Influences of various space current systems on the geomagnetic field in near-Earth space

Earth and Planetary Physics, 2023
Ground and space-based observations of the geomagnetic field are usually a superposition of different sources from the Earth’s core, lithosphere, ocean, ionosphere, and magnetosphere, and also from field-aligned currents coupling the ionosphere and ...
YaBing Wang, Yi Zhang, YuJie Wang, PengFei Liu, JianXia Cheng, XiZhi Li, Kai Tang, LiGang Li, XiaoWen Duan   +8 more
doaj   +1 more source

Excitation of zero-frequency magnetic field-aligned currents by ionospheric heating [PDF]

Annales Geophysicae, 2011
Time-dependent, three-dimensional numerical simulations of the reduced MHD model describing shear Alfvén waves in the magnetosphere provide an interesting prediction superficially similar to results of several ionospheric heating experiments conducted
A. V. Streltsov, A. V. Streltsov, T. R. Pedersen, T. R. Pedersen   +3 more
doaj   +1 more source

Responses of the field-aligned currents in the plasma sheet boundary layer to a geomagnetic storm

Earth and Planetary Physics, 2023
Geomagnetic storms can result in large magnetic field disturbances and intense currents in the magnetosphere and even on the ground. As an important medium of momentum and energy transport among the solar wind, magnetosphere, and ionosphere, field ...
YuanQiang Chen, MingYu Wu, YangJun Chen, SuDong Xiao, GuoQiang Wang, TieLong Zhang   +5 more
doaj   +1 more source

Simultaneous field‐aligned currents at Swarm and Cluster satellites [PDF]

Geophysical Research Letters, 2015
AbstractWe show for the first time, with direct, multispacecraft calculations of electric current density, and other methods, matched signatures of field‐aligned currents (FACs) sampled simultaneously near the ionosphere at low (~500 km altitude) orbit and in the magnetosphere at medium (~2.5 RE altitude) orbits using a particular Swarm and Cluster ...
M. W. Dunlop, J.‐Y. Yang, Y.‐Y. Yang, C. Xiong, H. Lühr, Y. V. Bogdanova, C. Shen, N. Olsen, Q.‐H. Zhang, J.‐B. Cao, H.‐S. Fu, W.‐L. Liu, C. M. Carr, P. Ritter, A. Masson, R. Haagmans   +15 more
openaire   +3 more sources

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye, Chimezie Okwuonu, Evelyn Idam, Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Zinnah Aloziem, Blossom Amamchukwu, Patience Elimia, Mkpoikanabasi Obot‐Obot, Henry Mbakwe, Praises Maduagwuna, Olatunji Akinrodoye, Chiamaka Anyanwu, Benjamin Anyanwu, Adedamola Akinsiku, Oluwatoyin A. Akinsiku, Muzamil O. Hassan, Fatiu A. Arogundade, Olalekan E. Ojo, Homayemem Weli, Jesupelumi Adenihun, Aderemi Adelaja, Ebun Bamgboye, Olalekan Olatise, Ade E. Faponle, Ayoola Odeyemi, Michael Muoka, Stephen Asaolu, Qudrat Busari, Blessing Dawudu, Michael Naiyeju, Rasheed A. Balogun   +33 more
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Dayside Field‐Aligned Current Impacts on Ionospheric Irregularities

Geophysical Research Letters, 2020
AbstractGlobal Navigation Satellite Systems (GNSS) are subject to disturbances caused by plasma irregularities in the ionosphere. Studies have suggested that in addition to the gradient drift and Kelvin‐Helmholtz instabilities, electron precipitation may be important for phase scintillations in the dayside auroral region.
A. Fæhn Follestad, K. Herlingshaw, H. Ghadjari, D. J. Knudsen, K. A. McWilliams, J. I. Moen, A. Spicher, J. Wu, Kjellmar Oksavik   +8 more
openaire   +3 more sources