Results 21 to 30 of about 924,604 (294)

Earth rotation-aware burn longitude guidance for targeted atmospheric entry interface of CubeSat

open access: yesFrontiers in Space Technologies
IntroductionThe rapid growth of CubeSat deployments in Low Earth Orbit (LEO) has intensified the need for reliable end-of-life disposal strategies to mitigate the accumulation of space debris.
C. Sathiyavel, K. V. N. Kavitha
doaj   +1 more source

State-Dependent Molecular Dynamics

open access: yesMolecules, 2014
This paper proposes a new mixed quantum mechanics (QM)—molecular mechanics (MM) approach, where MM is replaced by quantum Hamilton mechanics (QHM), which inherits the modeling capability of MM, while preserving the state-dependent nature of QM.
Ciann-Dong Yang, Hung-Jen Weng
doaj   +1 more source

Including orbital fluctuations in the noise spectrum of autonomous circuits [PDF]

open access: yes, 2011
We discuss the impact of orbital fluctuations on the noise spectrum of a free-running oscillator, exploiting a rigorous nonlinear perturbative analysis based on the Floquet theory, and providing evidence of its relevance for high-Q oscillators.
Bonani, Fabrizio   +3 more
core   +1 more source

Bound State Solution of Dirac Equation for Generalized Pöschl-Teller plus Trigomometric Pöschl-Teller Non- Central Potential Using SUSY Quantum Mechanics

open access: yesJournal of Mathematical and Fundamental Sciences, 2014
The bound state solution of the Dirac equation for generalized PöschlTeller and trigonometric Pöschl-Teller non-central potentials was obtained using SUSY quantum mechanics and the idea of shape invariance potential.
Suparmi, Cari
doaj   +1 more source

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

Hydrogen Atom as a Nonlinear Oscillator Under Circularly Polarized Light: Epicyclical Electron Orbits

open access: yesHydrogen
We used Clifford algebra Cl2,0 to find the 2D orbit of a hydrogen electron under a Coulomb force and a perturbing circularly polarized electric field of light at angular frequency ω, which is turned on at time t=0 via a unit step switch.
Quirino Sugon   +2 more
doaj   +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

In vitro and in silico modelling of ROS1‐positive non‐small cell lung cancer reveals fusion‐dependent tyrosine kinase inhibitor responses

open access: yesMolecular Oncology, EarlyView.
Drug resistance limits treatment success in a subset of lung cancers driven by ROS1 gene alterations. Using patient‐derived cells and computer simulations, we studied three key mutations and how they affect five targeted drugs. The mutations reduced drug effectiveness in different ways by altering protein structure and behavior.
Farhan Ul Haq   +8 more
wiley   +1 more source

THE STATISTICAL MECHANICS OF PLANET ORBITS [PDF]

open access: yesThe Astrophysical Journal, 2015
26 pages, 5 figures. Minor revisions in response to suggestions by the referee.
openaire   +2 more sources

GENERAL CONCEPTS ABOUT SOLID BODY ASTRODYNAMICS

open access: yesNonconventional Technologies Review, 2020
The paper presents the theoretical foundation of the dynamics of the solid body in gravitational movement in the outer space. It is known that the movement of solid bodies in space is subjects both the laws of Newton's classical mechanics and those of ...
Viorel Mihai Nani, Alin Nani
doaj  

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