Results 11 to 20 of about 1,276,956 (323)

Orbital mechanics and quasiperiodic oscillation resonances of black holes in Einstein-Æther theory

open access: yes, 2020
In this paper, we study the motion of test particles around two exact charged black-hole solutions in Einstein-AEther theory. Specifically, we first consider the quasi-periodic oscillations (QPOs) and their resonances generated by the particle moving in ...
M. Azreg-Aïnou   +6 more
semanticscholar   +1 more source

Orbital angular momentum of the spiral beams [PDF]

open access: yesКомпьютерная оптика, 2019
At first sight, any rotation generates some angular momentum (it is true for a solid body). But these characteristics (rotation and orbital angular momentum) are rather different for optics and mechanics.
Vladimir Volostnikov
doaj   +1 more source

Coulomb Problem for Classical Spinning Particles

open access: yesUniverse, 2023
We consider the motion of a weakly relativistic charged particle with an arbitrary spin in central potential e/r in terms of classical mechanics. We show that the spin–orbital interaction causes the precession of the plane of orbit around the vector of ...
Dmitry S. Kaparulin   +1 more
doaj   +1 more source

A quantitative evaluation of computational methods to accelerate the study of alloxazine-derived electroactive compounds for energy storage

open access: yesScientific Reports, 2021
Alloxazines are a promising class of organic electroactive compounds for application in aqueous redox flow batteries (ARFBs), whose redox properties need to be tuned further for higher performance.
Qi Zhang, Abhishek Khetan, Süleyman Er
doaj   +1 more source

Tidal evolution of close-in exoplanets in co-orbital configurations [PDF]

open access: yes, 2013
In this paper, we study the behavior of a pair of co-orbital planets, both orbiting a central star on the same plane and undergoing tidal interactions. Our goal is to investigate final orbital configurations of the planets, initially involved in the 1/1 ...
Giuppone, Cristian A.   +2 more
core   +2 more sources

Majorana stellar representation of twisted photons

open access: yesPhysical Review Research, 2023
Majorana stellar representation, which visualizes a quantum spin as points on the Bloch sphere, allows quantum mechanics to accommodate the concept of trajectory, the hallmark of classical physics. We extend this notion to the discrete cylinder, which is
Nicolas Fabre   +4 more
doaj   +1 more source

Scheduling an Agile Earth Observation Satellite with a Defined Mission Using Discrete Event Supervisory Control [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی, 2023
Finding the best possible scheduling to maximize observations and transfer them to the ground station as a function of satellite characteristics, orbital mechanics, attitude control system, field of view and observational objectives, is very important ...
Arda Afzali, Bahman Ghorbani Vaghei
doaj   +1 more source

Quantum Mechanics/Extremely Localized Molecular Orbital Embedding Strategy for Excited States: Coupling to Time-Dependent Density Functional Theory and Equation-of-Motion Coupled Cluster.

open access: yesJournal of Chemical Theory and Computation, 2020
The QM/ELMO (quantum mechanics/extremely localized molecular orbital) method is a recently developed embedding technique in which the most important region of the system under examination is treated at fully quantum mechanical level, while the rest is ...
G. Macetti, A. Genoni
semanticscholar   +1 more source

Dental microwear reveals mammal-like chewing in the neoceratopsian dinosaur Leptoceratops gracilis [PDF]

open access: yesPeerJ, 2016
Extensive oral processing of food through dental occlusion and orbital mandibular movement is often cited as a uniquely mammalian trait that contributed to their evolutionary success.
Frank J. Varriale
doaj   +2 more sources

Ring Vibrations to Sense Anionic Ibuprofen in Aqueous Solution as Revealed by Resonance Raman

open access: yesMolecules, 2022
We unravel the potentialities of resonance Raman spectroscopy to detect ibuprofen in diluted aqueous solutions. In particular, we exploit a fully polarizable quantum mechanics/molecular mechanics (QM/MM) methodology based on fluctuating charges coupled ...
Sara Gómez   +4 more
doaj   +1 more source

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