Results 11 to 20 of about 913,133 (344)

Coincidence study of double electron emission associated with K-shell photoionization of C60 / Исследование двойной электронной эмиссии, связанной с Фотоионизацией к-оболочки С60 / Koincidentna studija dvostruke elektronske emisije povezane sa fotojonizacijom K-ljuske C60 [PDF]

open access: yesVojnotehnički Glasnik, 2018
The (multiple) photoionization and subsequent fragmentation of the C60 molecule was studied with the synchrotron radiation after removing electrons from the inner K-shell.
Sanja Lj. Korica   +2 more
doaj   +1 more source

Terahertz waves regulate the mechanical unfolding of tau pre-mRNA hairpins

open access: yesiScience, 2023
Summary: Intermolecular interactions, including hydrogen bonds, dominate the pairing and unpairing of nucleic acid chains in the transfer process of genetic information.
Qin Zhang   +6 more
doaj   +1 more source

Strong-field physics in the molecular frame [PDF]

open access: yesEPJ Web of Conferences, 2019
Laser-aligned carbonyl-sulfide molecules were strong-field ionized using mid-infrared light. Investigating the strong-field effects in the molecular frame allowed to add novel facets to the understanding of the intrinsic nature of strong-field physics.
Trabattoni Andrea   +10 more
doaj   +1 more source

Basic Stellar Physics [PDF]

open access: yesEPJ Web of Conferences, 2023
Polytropes, Virial theorem, evolutionary time scales, degrees of freedom, radiative transport, molecular weight, degeneracy, Jeans mass, and Eddington luminosity are basic ingredients to describe the physics of stars.
Palmerini S.
doaj   +1 more source

The Physics and Physical Chemistry of Molecular Machines [PDF]

open access: yesChemPhysChem, 2016
AbstractThe concept of a “power stroke”—a free‐energy releasing conformational change—appears in almost every textbook that deals with the molecular details of muscle, the flagellar rotor, and many other biomolecular machines. Here, it is shown by using the constraints of microscopic reversibility that the power stroke model is incorrect as an ...
R. Dean Astumian   +2 more
openaire   +2 more sources

Gas-phase Ortho-to-para Ratio of Formaldehyde Formed at Low Temperatures in Laboratory Ices

open access: yesThe Astrophysical Journal Letters, 2023
The ortho-to-para ratio (OPR) of formaldehyde (H _2 CO) has been used as a probe to estimate the formation temperature of molecules in interstellar, circumstellar, and cometary environments, relying on the assumption that nuclear spin conversion is ...
K. M. Yocum   +4 more
doaj   +1 more source

Variational approaches to quantum impurities: from the Fr\"{o}hlich polaron to the angulon [PDF]

open access: yes, 2018
Problems involving quantum impurities, in which one or a few particles are interacting with a macroscopic environment, represent a pervasive paradigm, spanning across atomic, molecular, and condensed-matter physics.
Bighin, Giacomo   +3 more
core   +4 more sources

Teaching "Symmetry" in the Introductory Physics Curriculum [PDF]

open access: yes, 2000
Modern physics is largely defined by fundamental symmetry principles and Noether's Theorem. Yet these are not taught, or rarely mentioned, to beginning students, thus missing an opportunity to reveal that the subject of physics is as lively and ...
Hill, Christopher T., Lederman, Leon M.
core   +2 more sources

Physics-based visual characterization of molecular interaction forces [PDF]

open access: yes, 2017
Molecular simulations are used in many areas of biotechnology, such as drug design and enzyme engineering. Despite the development of automatic computational protocols, analysis of molecular interactions is still a major aspect where human comprehension ...
Estrada, Jorge   +5 more
core   +4 more sources

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