Results 171 to 180 of about 22,697 (311)

Orbit Determination for Continuously Maneuvering Starlink Satellites Based on an Unscented Batch Filtering Method. [PDF]

Sensors (Basel)
Lang A, Jiang Y.
europepmc   +1 more source

Centimeter-Level Orbit Determination for TG02 Spacelab Using Onboard GNSS Data. [PDF]

Sensors (Basel), 2018
Li K, Zhou X, Wang W, Gao Y, Zhao G, Tao E, Xu K.   +6 more
europepmc   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Investigating the suitability of Analytical and Semi-analytical Satellite theories for Space Object Catalogue maintenance in Geosynchronous regime

, 2013
Currently, the number of space debris particles is about 33,500, out of which approximately 1100 are in geosynchronous orbits, which are tracked and whose orbital data are provided from US Space surveillance network, with instances of colliding and ...
Setty, Srinivas, Fiedler, Hauke, Montenbruck, Oliver, Cefola, Paul   +3 more
core  

Bayesian Adaptive Extended Kalman-Based Orbit Determination for Optical Observation Satellites. [PDF]

Sensors (Basel)
Guo Y, Pang Q, Yin X, Shi X, Zhao Z, Sun J, Wang J.   +6 more
europepmc   +1 more source

Research on Attitude Models and Antenna Phase Center Correction for Jason-3 Satellite Orbit Determination. [PDF]

Sensors (Basel), 2019
Liu M, Yuan Y, Ou J, Chai Y.
europepmc   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

An on Orbit Determination of Point Spread Functions for the Interface Region Imaging Spectrograph. [PDF]

Sol Phys, 2018
Courrier H, Kankelborg C, De Pontieu B, Wülser JP.   +3 more
europepmc   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Orbit determination of the Lunar Reconnaissance Orbiter: Status after Seven Years. [PDF]

Planet Space Sci, 2018
Mazarico E, Neumann GA, Barker MK, Goossens S, Smith DE, Zuber MT.   +5 more
europepmc   +1 more source