Results 121 to 130 of about 12,272 (307)

Orbital Mechanism and Satellite Orbital Location [PDF]

Journal of Engineering and Applied Sciences, 2010
O.D. Ahmed, E.E. Omizegba, M.I. Onogu
openaire   +1 more source

Entropy-Corrected Orbital Mechanics: Suppression-Driven Deviations from Classical Keplerian Motion [PDF]

Classical orbital mechanics, as encoded in Kepler’s laws and Newton’s universal gravitation, assume a constant gravitational coupling G. However, recent developments in entropy-driven gravitational suppression suggest that this assumption may break down ...
Dustyn Stanley
core  

Flexoelectrically Induced Polar Topology in Twisted SrTiO3 Membranes

Advanced Materials, EarlyView.
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Isabel Tenreiro, Hugo Aramberri, Víctor Rouco, Gabriel Sánchez‐Santolino, Mariona Cabero, Fernando Gallego, David Sánchez‐Manzano, José M. González‐Calbet, Federico Mompeán, Mar García‐Hernández, Alberto Rivera‐Calzada, Jorge Íñiguez‐González, Carlos León, Jacobo Santamaría   +13 more
wiley   +1 more source

Analytical Solutions for Planet-scattering Small Bodies

The Astronomical Journal
Gravitational scattering of small bodies (planetesimals) by a planet remains a fundamental problem in celestial mechanics. It is traditionally modeled within the circular restricted three-body problem, where individual particle trajectories are obtained ...
Yukun Huang, Brett Gladman, Eiichiro Kokubo   +2 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source

Orbital pacing of environmental perturbations in a Greenhouse World: a 40-Myr record from Upper Devonian—Lower Carboniferous successions on the eastern margin of Gondwana

Scientific Reports
Orbital pacing of environmental changes during the Late Devonian–Early Carboniferous (Famennian–Viséan, ~ 372–330 Ma) greenhouse Earth is investigated using high-resolution gamma-ray (GR) logs, chemostratigraphy (ICP-OES, ICP-MS, pXRF), and ...
Omid Falahatkhah, Arthur John Mory, Ali Kadkhodaie, Omar Al-Fatlawi, Dhifaf Sadeq   +4 more
doaj   +1 more source

Binding Zinc and Oxo-Vanadium Insulin-Mimetic Complexes to Phosphatase Enzymes: Structure, Electronics and Implications

Molecules
We explore the structural and electronic properties of representative insulin-mimetic oxovanadium and zinc complexes as computed in vacuum, in water clusters and upon binding to PTEN and PTP1B phosphatases.
Victor V. Volkov, Carole C. Perry, Riccardo Chelli   +2 more
doaj   +1 more source

Solar radiation pressure augmented deorbiting from high altitude sun-synchronous orbits [PDF]

, 2012
This paper discusses the use of solar radiation pressure (SRP) augmented deorbiting to passively remove small satellites from high altitude Sun-synchronous orbits. SRP-augmented deorbiting works by deploying a light-weight reflective inflatable device to
Colombo, Camilla, McInnes, Colin, Lucking, Charlotte   +2 more
core  

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

The Influence of General Relativity on the Spins of Celestial Bodies in Inclined Orbits

The Astrophysical Journal
Through the Rossiter–McLaughlin effect, several hot Jupiters have been found to exhibit spin–orbit misalignment and even retrograde orbits. The high obliquity observed in these planets can be attributed to two primary formation mechanisms, as summarized ...
Huan-Rong Yuan, Ying Wang, Xin Wu, Ji-Wei Xie, Hui-Gen Liu, Ji-Lin Zhou, Wei Sun   +6 more
doaj   +1 more source