Results 61 to 70 of about 3,370,338 (297)
Orbital dynamics of high area-to-mass ratio spacecraft under the influence of J2 and solar radiation pressure [PDF]
, 2011 This paper investigates the effect of planetary oblateness and solar radiation pressure on the orbit of high area-to-mass spacecraft. A planar Hamiltonian model shows the existence of equilibrium orbits with the orbit apogee pointing towards or away from
Colombo, Camilla +2 more
core +3 more sources
Simulation of Contact Force of Fault Planetary Gear System based on Virtual Prototype Technology
Jixie chuandong, 2015 In order to obtain the changing pattern of contact force of fault planetary gear system,a dynamics model of fault planetary gear system is established and the computation method for contact force of gear meshing based on Hertz theory is also introduced ...
Xiang Ling, Chen Tao, Hu Silei
doaj
Distinct impacts of diverse forcing agents on Arctic sea ice since the mid-twentieth century
npj Climate and Atmospheric ScienceArctic sea ice has undergone non-monotonic changes since the middle of the last century. Here, we investigate the cause of this behavior by isolating and quantifying the effects of anthropogenic aerosols, well-mixed greenhouse gases, and biomass burning ...
Yu-Chi Lee +3 more
doaj +1 more source
Imaging polarimetry of planetary and proto-planetary nebulae [PDF]
, 1997 Optical imaging polarimetry has been performed on a small sample of objects which are associated with that stage of stellar evolution occurring between the Asymptotic Giant Branch and full Planetary Nebula. Three such systems are considered, specifically,
Bowlzer, S.L., Bowlzer, S. L.
core
Advanced Materials, EarlyView.A circular upcycling strategy transforms waste poly(ethylene terephthalate) bottles into microwave‐responsive Ni@C catalyst featuring lattice‐distorted nickel cores and defective carbon shells. These strain‐rich heterointerfaces enhance dielectric loss and promote localized microwave hotspots, accelerating peroxymonosulfate activation and polymer‐chain
Xiao Lu +7 more
wiley +1 more source
Earth and Mars Interior Structures Set by Remelting of the First Solid Mantle
The Astrophysical Journal LettersMagma-ocean crystallization sets up the early structure and long-term evolution of terrestrial planets. Recent seismic evidence signals the presence of a silicate layer at the base of Mars’s mantle. Magma-ocean crystallization and subsequent overturn has
Antonio Manjón-Cabeza Córdoba +2 more
doaj +1 more source
Kinematics and Dynamics of Galactic Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1997 Planetary Nebulae (PNe) are transient objects of considerable astrophysical interest: there are thought to descend from low and intermediate initial mass stars and therefore cover a large range of ages. On the other hand there are easily identified thanks to their bright emission-line spectra.
openaire +1 more source
Advanced Materials, EarlyView.TESCLA (tubular electromagnetic soft conformal linear actuator) combines liquid‐metal solenoids and compliant magnetic composites to achieve large‐stroke bidirectional actuation with continuous bending. Integrated inductance‐based self‐sensing enables proprioceptive position estimation without external sensors, providing a versatile platform for soft ...
Yeongjin Choi +3 more
wiley +1 more source
Oceanic planetary waves in the coupled ocean-atmosphere system [PDF]
, 2005 The propagation of planetary, or Rossby, waves is studied under the effects of different atmospheric couplings. First, analytical matchings are formulated in which a Rossby wave is coupled to different thermodynamical atmospheres, from a simple heat flux
Farneti, R., Farneti, Riccardo
core +1 more source
From Tides to Currents: Unraveling the Mechanism that Powers WASP-107b’s Internal Heat Flux
The Astrophysical JournalThe sub-Jovian exoplanet WASP-107b ranks among the best-characterized low-density worlds, featuring a Jupiter-like radius and a mass that lies firmly in the sub-Saturn range.
Konstantin Batygin
doaj +1 more source