Results 51 to 60 of about 8,492,929 (374)

Exact solution, scaling behaviour and quantum dynamics of a model of an atom-molecule Bose-Einstein condensate

open access: yes, 2002
We study the exact solution for a two-mode model describing coherent coupling between atomic and molecular Bose-Einstein condensates (BEC), in the context of the Bethe ansatz.
Drummond P. D.   +10 more
core   +1 more source

Electrically driven photon emission from individual atomic defects in monolayer WS2. [PDF]

open access: yes, 2019
Quantum dot-like single-photon sources in transition metal dichalcogenides (TMDs) exhibit appealing quantum optical properties but lack a well-defined atomic structure and are subject to large spectral variability.
Barnard, Edward S   +9 more
core   +2 more sources

Atomic-level energy storage mechanism of cobalt hydroxide electrode for pseudocapacitors

open access: yesNature Communications, 2017
Cobalt hydroxide is a promising electrode material for supercapacitors due to the high capacitance and long cyclability. However, the energy storage/conversion mechanism of cobalt hydroxide is still vague at the atomic level.
T. Deng   +11 more
semanticscholar   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Sub-barrier Fusion and Neutron Transfer with Positive Q-value

open access: yesEPJ Web of Conferences, 2014
Fusion excitation functions of 16O+76Ge and 18O+74Ge have been measured with high precision at energies near and below the Coulomb barrier. Coupled-channels calculations including inelastic excitations well reproduce the experimental fusion excitation ...
Lin C. J.   +8 more
doaj   +1 more source

Nuclear Polarizabilities and Logarithmic Sum Rules [PDF]

open access: yes, 1997
The electric polarizability and logarithmic mean-excitation energy are calculated for the deuteron using techniques introduced in atomic physics. These results are then used to improve limits on the atomic-deuterium frequency shift due to nuclear ...
B. Podolsky   +25 more
core   +2 more sources

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

open access: yesFEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii   +8 more
wiley   +1 more source

Simultaneous determination of gross alpha/beta activities in water by liquid scintillation counting and its applications in the environmental monitoring

open access: yesScientific Reports, 2022
Based on the standards of ISO11704-2018 and ASTM D7283-17, a method for simultaneous determination of gross alpha and gross beta activity concentrations in water by liquid scintillation counting (LSC) was established, which can be applied to various ...
Xiaoyun Li   +6 more
doaj   +1 more source

Photonuclear reaction study with the (p, γ) resonance γ-source [PDF]

open access: yesEPJ Web of Conferences, 2020
The (p, γ) resonance is a good way to produce monoenergetic γ rays. It becomes an important tool for studying photonuclear reactions. In this work, 13C(p, γ)14N resonance is studied to produce 9.17 MeV γ ray using the 2 × 1.7 MV tandem accelerator at ...
He Chuangye   +9 more
doaj   +1 more source

Quantum Chemistry, Anomalous Dimensions, and the Breakdown of Fermi Liquid Theory in Strongly Correlated Systems

open access: yes, 1993
We formulate a local picture of strongly correlated systems as a Feynman sum over atomic configurations. The hopping amplitudes between these atomic configurations are identified as the renormalization group charges, which describe the local physics at ...
  +12 more
core   +1 more source

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