Results 31 to 40 of about 73,199 (242)
Satellite-Driven Estimates of Water Mass Formation and Their Spatio-Temporal Evolution
Frontiers in Marine Science, 2019 We derive water mass transformation and formation rates using satellite-derived datasets of salinity, temperature and fluxes of heat and freshwater over the North Atlantic, North Pacific and Southern Ocean.
Aqeel Piracha +4 more
doaj +1 more source
Aerospace, 2022 One of the important applications of the space tethered system is formation flying. To satisfy the requirement for interferometry of ground targets by remote-sensing satellites, a new type of tethered solar sail spacecraft has been proposed in recent ...
Yini Zhong, Rui Zhong
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Structure formation: Satellites of satellites in isolation
Nature Astronomy, 2017 The discovery of groups of dwarf galaxies in extremely isolated environments provides direct observational evidence of hierarchical assembly at small galactic scales.
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Dual satellite operations in close formation flight [PDF]
SpaceOps 2012 Conference, 2012 TerraSAR-X (TSX) and TanDEM-X (TDX) are two satellites flying in low-earth orbit. Both satellites are equipped with a synthetic aperture radar (SAR) payload for Earth observation. TSX has been launched in 2007 and TDX in 2010. Both satellites are operated by the German Space Operations Center (GSOC).
Maurer, Edith +3 more
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The formation of regular satellites [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 Most models of planet formation envisage that early protoplanets were encompassed by a dusty gaseous disc. A simulation of planet formation by the capture-theory model has shown the formation of such a disc and suggests that its mass was close to that of the protoplanet and that it was a few au in extent.
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THE FORMATION OF PLUTO'S LOW-MASS SATELLITES [PDF]
The Astronomical Journal, 2013 35 pages, 9 figures, revised based on comments from referees and colleagues, AJ, in ...
Kenyon, Scott J., Bromley, Benjamin C.
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Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
Safety Control for Satellite Formation Flying via High-Order Control Barrier Functions
Applied SciencesIn satellite formation flying, maintaining a predefined safety distance between the reference satellite and its accompanying satellites is critical to prevent collisions—a requirement that traditional control methods fail to satisfy.
Xu Zhang +3 more
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Multistatic sar satellite formations: potentials and challenges [PDF]
Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05., 2005 This paper discusses the capabilities of multistatic SAR satellite configurations for different applications like high resolution DEM generation using multibaseline single-pass cross- track interferometry, 3-D vegetation mapping and layover solution with spaceborne SAR tomography, high resolution wide swath SAR imaging with sparse satellite arrays ...
Krieger, Gerhard, Moreira, Alberto
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Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source