Results 11 to 20 of about 2,114,058 (298)

Photophysical Properties of Anthracene Derivatives

open access: yesPhotochem, 2023
In this tutorial review, we intend to provide the reader with a comprehensive introduction to the photophysical properties of organic compounds with a specific focus on anthracene and its derivatives.
Agonist Kastrati   +3 more
doaj   +1 more source

Baryon breakdown in black hole

open access: yesFrontiers in Physics, 2022
According to relativity theory, a black hole is a distinct region in spacetime; according to astronomical observations, it is a celestial body transforming matter into high-energy jets.
Lauri Lehmonen, Arto Annila
doaj   +1 more source

Pseudopotential for the electron-electron interaction [PDF]

open access: yesPhysical Review B, 2015
We propose a pseudopotential for the electron-electron Coulomb interaction to improve the efficiency of many-body electronic structure calculations. The pseudopotential accurately replicates the scattering properties of the Coulomb interaction, and recovers the analytical solution for two electrons in a parabolic trap.
Lloyd-Williams, JH   +2 more
openaire   +3 more sources

Comparison of Megavoltage Electron Dosimetry Beams in Radiation Therapy Using Different Protocols [PDF]

open access: yesJournal of Kerman University of Medical Sciences
Background: International Atomic Energy Agency (IAEA) and American Association of physicist in Medicine (AAPM) have introduced new protocols for dosimetry of electron and photon megavoltage beams and increased them to more than five protocols at the ...
Zahra Jomehzadeh, Ali Jomehzadeh
doaj   +1 more source

On the Classical Coupling between Gravity and Electromagnetism

open access: yesAtoms, 2015
Coupling between electromagnetism and gravity, manifested as the distorted Coulomb field of a charge distribution in a gravitational field, has never been observed.
Maria Becker   +2 more
doaj   +1 more source

Electron–electron and electron–hole pairing in graphene structures [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010
The superconducting pairing of electrons in doped graphene owing to in-plane and out-of-plane phonons is considered. It is shown that the structure of the order parameter in the valley space substantially affects conditions of the pairing. Electron–hole pairing in a graphene bilayer in the strong coupling regime is also considered.
Yu. E. Lozovik   +2 more
openaire   +4 more sources

Collision of a Positron with the Capture of an Electron from Lithium and the Effect of a Magnetic Field on the Particles Balance

open access: yesChemosensors, 2021
The processes of scattering slow positrons with the possible formation of positronium play an important role in the diagnosis of both composite materials, including semiconductor materials, and for the analysis of images obtained by positron tomography ...
Elena V. Orlenko   +2 more
doaj   +1 more source

Xfel: Mighty view into microworld [PDF]

open access: yesTehnika, 2014
European x-ray free electron laser, i.e. company and institute European XFEL GmbH (EuXFEL), represents the center point of contemporary particle physics, as well as precise, sophisticated and advanced engineering.
Ekmedžić Marko Ž., Rašuo Boško R.
doaj   +1 more source

Effect of Dental Filling Materials on Electron Beam Radiotherapy Dose Distribution in Head Region: a Monte Carlo Study by FLUKA and MCNPX Codes [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: Radiation therapy is regarded as the mainstay treatment for head or neck cancer patients. In this method, the backscattered radiation of dental composites can damage the surrounding tissue.
Mohamad Reza Rezaie Rayeni Nejad   +3 more
doaj   +1 more source

Electronic Markets and Electronic Hierarchies [PDF]

open access: yesCommunications of the ACM, 1987
Abstract The innovations in information technologies of the past two decades have radically reduced the time and cost of processing and communicating information. These reductions have in turn brought many changes in the ways that tasks are accomplished in firms.
Thomas W. Malone   +2 more
openaire   +2 more sources

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