Results 51 to 60 of about 13,908,475 (307)

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Neural network based model for global Total Electron Content forecasting

Journal of Space Weather and Space Climate, 2020
We introduce a novel empirical model to forecast, 24 h in advance, the Total Electron Content (TEC) at global scale. The technique leverages on the Global Ionospheric Map (GIM), provided by the International GNSS Service (IGS), and applies a nonlinear ...
Cesaroni Claudio, Spogli Luca, Aragon-Angel Angela, Fiocca Michele, Dear Varuliator, De Franceschi Giorgiana, Romano Vincenzo   +6 more
doaj   +1 more source

The Total Electron Content From InSAR and GNSS: A Midlatitude Study

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2018
The total electron content (TEC) measured from the interferometric synthetic aperture radar (InSAR) and from a dense network of global navigation satellite system (GNSS) receivers are used to assess the capability of InSAR to retrieve ionospheric information, when the tropospheric contribution to the interferometric phase is reasonably negligible. With
Elvira Musico, Claudio Cesaroni, Luca Spogli, John Peter Merryman Boncori, Giorgiana De Franceschi, Roberto Seu   +5 more
openaire   +3 more sources

GNSS Total Electron Content Data (60 s) at Ny-Ålesund in 2016

, 2020
This data set contains Total Electron Content data at 60 seconds time resolution at Ny-Ålesund, Svalbard. The measurements were collected by the University of Bergen using a NovAtel GPStation-6 global navigation satellite system receiver.
Oksavik, Kjellmar
core   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Spectra of equatorial total electron content derived from GPS signals [PDF]

Annales Geophysicae, 2009
High cadence GPS TEC signals collected on Ascension Island, South Atlantic Ocean, during sunspot minimum, and in Vanimo, Papua New Guinea, over half a solar cycle, have been analysed for their spectral properties.
M. M. J. L. van de Kamp, P. S. Cannon, P. S. Cannon   +2 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

Geometric quality term for station-based total electron content estimation

Annals of Geophysics, 2016
Global ionospheric maps (GIMs) are still commonly used to represent total electron content (TEC). However, a large number of permanent GPS receivers provide significant data for monitoring ionosphere.
Murat Selim Çepni, Erman Şentürk
doaj   +1 more source

An artificial neural network model in predicting VTEC over central Anatolia in Turkey

Geodesy and Geodynamics, 2023
This research investigates the capability of artificial neural networks to predict vertical total electron content (VTEC) over central Anatolia in Turkey.
Ali Özkan
doaj   +1 more source

GNSS Total Electron Content Data (60 s) at Bjørnøya in 2016

, 2020
This data set contains Total Electron Content data at 60 seconds time resolution from Bjørnøya, Svalbard. The measurements were collected by the University of Bergen using a NovAtel GPStation-6 global navigation satellite system receiver.
Oksavik, Kjellmar
core   +1 more source