Results 61 to 70 of about 2,384 (248)

Desaturation Maneuvers and Precise Orbit Determination for the BepiColombo Mission

open access: yes, 2011
The purpose of this work is the analysis of the consequences that desaturation maneuvers can have in the precise orbit determination corresponding to the Radio Science Experiment (MORE) of the BepiColombo mission to Mercury. This mission is an ESA/JAXA joint project with very challenging objectives regarding geodesy, geophysics and fundamental physics.
ALESSI E. M.   +3 more
openaire   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Results and Analyses of BDS Precise Orbit Determination with the Enhancement of Fengyun-3C [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2019
Global navigation satellite system occultation sounder (GNOS) Fengyun-3C was launched successfully on September 23, 2013, which carried GPS/BDS receiver for the first time.
Tian ZENG,Lifen SUI,Xiaolin JIA,Guofeng JI,Qinghua ZHANG
doaj   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Two-Site Optical Observation and Initial Orbit Determination for Geostationary Earth Orbit Satellites [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
Optical observation system provides angle-only measurement for orbit determination of space object. Range measurement can be directly acquired using laser ranging or tone ranging system.
Jin Choi   +4 more
doaj   +1 more source

Consolidation of in-house satellite trajectory generator for precise orbit determination [PDF]

open access: yes, 2022
LAUREA MAGISTRALEMolte moderne missioni spaziali in orbita terrestre bassa, come le missioni di Geodesia, Topografia e SAR, sono state interessate da un drastico aumento nei requisiti di accuratezza riguardo la determinazione dell’orbita per i relativi
Esposito, Giuseppe Enricomaria
core  

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

open access: yesFEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas   +3 more
wiley   +1 more source

Real-Time Multi-GNSS Precise Orbit Determination Based on the Hourly Updated Ultra-Rapid Orbit Prediction Method

open access: yesRemote Sensing, 2022
Offering real-time precise point positioning (PPP) services for global and large areas based on global navigation satellite systems (GNSS) has drawn more and more attention from institutions and companies. A precise and reliable satellite orbit is a core
Bingfeng Tan   +3 more
doaj   +1 more source

Precise orbit determination based on COST-G time-variable gravity fields [PDF]

open access: yes, 2022
The Combination Service for Time-variable Gravity fields (COST-G) provides monthly gravity fields, combined from the individual solutions of the COST-G analysis centers and additional partner analysis centers derived from GRACE/GRACE-FO inter-satellite ...
Lasser, Martin   +4 more
core  

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