Results 51 to 60 of about 875,218 (283)
Molecular Oncology, EarlyView.Taxanes are widely used chemotherapeutics whose effects on cellular mechanics remain poorly understood. We show that paclitaxel induces rapid cellular contraction by promoting GEF‐H1 dissociation from microtubules and non‐muscle myosin II activation through RhoA/ROCK.
Gloria Asensio‐Juárez +5 more
wiley +1 more source
Gauss-Radau Small-body Simulator (GRSS): An Open-source Library for Planetary Defense
The Planetary Science JournalWe present GRSS , a small-body propagation and orbit determination library specifically designed for planetary defense applications. GRSS is an end-to-end, open-source software tool that begins with optical observations obtained from the Minor Planet ...
Rahil Makadia +3 more
doaj +1 more source
Precise Orbit Propagation of Geostationary Satellite Using Cowell's Method [PDF]
Journal of Astronomy and Space Sciences, 1997 To calculate the position and velocity of the artificial satellite precisely, one has to broil a mathematical model concerning the perturbations by understanding and analysing the space environment correctly and then quantifying.
Jae-Cheol Yoon +2 more
doaj
Random Error Estimation and Propagation Analysis for Satellites’ Initial Positions
International Journal of Aerospace Engineering, 2023 An increasing number of satellites are currently being launched into orbit to work in the form of clusters or constellations. However, the initial orbit position is accompanied by random errors, which will propagate during their running.
Huanqin Wu +4 more
doaj +1 more source
FEBS Open Bio, EarlyView.Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas +6 more
wiley +1 more source
Analytical model for the propagation of small debris objects clouds after fragmentations [PDF]
, 2015 Current debris evolutionary models usually neglect fragments smaller than 10 cm because of the high computational effort they add to the simulation. However, small-debris objects can also be dangerous to operational satellites.
Colombo, Camilla +3 more
core +1 more source
Performance Evaluation of High-Frequency Mobile Satellite Communications
IEEE Access, 2019 Communication satellites have a much longer propagation delay than terrestrial communication networks such as cellular or WiFi. In addition, as the carrier frequency moves up, mobile satellite communications show worse performances than the conventional ...
Yonghwa Lee, Jihwan P. Choi
doaj +1 more source
Remote Sensing, 2023 The number of resident space objects (RSOs) has been steadily increasing over time, posing significant risks to the safe operation of on-orbit assets. The accurate prediction of potential collision events and implementation of effective and nonredundant ...
Hui Xie +5 more
doaj +1 more source
Improving sgp4 orbit propagation
System technologies, 2019 The review reflects a comparison between several studies on improving the orbit propagataion accuracy using space objects’ TLE-elements. The study is done to identify a technique that can be applied to enhance the SGP4 model despite increasing the propagation span.
openaire +2 more sources
ATZ‐1 promotes DNA replication efficiency to maintain normal meiotic function
FEBS Open Bio, EarlyView.Absence of ATZ‐1 interferes with meiotic DNA replication and cell cycle function via CHK‐1. This causes downstream defects associated with DNA damage and genomic integrity. Taken together, this study suggests that ATZ‐1 influences DNA replication efficiency and cell cycle function to maintain normal meiotic function.
Taylin E. Gourley +5 more
wiley +1 more source