Results 21 to 30 of about 195,019 (293)

Branching Fraction Limits for B0 Decays to eta' eta, eta' pi0 and eta pi0 [PDF]

open access: yesPhysical Review D: Particles, Fields, Gravitation and Cosmology, 2006
We describe searches for decays to two-body charmless final states eta' eta, eta' pi0 and eta pi0 of B0 mesons produced in e+e- annihilation. The data, collected with the BaBar detector at the Stanford Linear Accelerator Center, represent 232 million produced B-anti-B pairs. The results for branching fractions are, in units of 10^-6 (upper limits at 90%
The BABAR Collaboration, Aubert, B.
  +10 more sources

$\eta$ and $\eta'$ photoproduction with $\eta$MAID [PDF]

open access: yesProceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017), 2018
A phenomenological analysis of $\eta$ and $\eta'$ photoproduction on the protons and the neutrons with EtaMAID model is presented. The model includes 23 nucleon resonances parameterized by Breit-Wigner functions with energy dependent widths. At high energies, $W > 3$ GeV, Regge cut phenomenology was applied with vector and axial-vector meson exchanges ...
Viktor Kashevarov   +2 more
openaire   +1 more source

π-Hole Tetrel Bonds—Lewis Acid Properties of Metallylenes

open access: yesCrystals, 2022
The MP2/aug-cc-pVTZ calculations were performed on the dihalometallylenes to indicate their Lewis acid and Lewis base sites. The results of the Cambridge Structural Database search show corresponding and related crystal structures where the tetrel center
Sławomir J. Grabowski
doaj   +1 more source

Classification of So-Called Non-Covalent Interactions Based on VSEPR Model

open access: yesMolecules, 2021
The variety of interactions have been analyzed in numerous studies. They are often compared with the hydrogen bond that is crucial in numerous chemical and biological processes.
Sławomir J. Grabowski
doaj   +1 more source

Gizarte digitalerako hezkuntza: adimen artifizialaren eta big dataren erabilerarantz [PDF]

open access: yes, 2020
Gizartean izan den iraultza teknologikorik eraldakorrenaren testigu gara; une oro aldatzen eta berreraikitzen den gizarte baten iraultza ezplanifikatuaren testigu.
Astigarraga, Eugenio   +12 more
core   +1 more source

Bats from different foraging guilds prey upon the pine processionary moth [PDF]

open access: yesPeerJ, 2019
Outbreaks of the processionary moth Thaumetopoea pityocampa (Denis & Schiffermüller, 1775), a forest pest from the Palearctic, are thought to induce a behavioral response of bats, but up to now the moth has been seldom identified as bats’ prey.
Inazio Garin   +5 more
doaj   +2 more sources

Consequences of Cash-rent Farming in Kermanshah’s Mahidasht: Marshallian versus Cheungian Perspectives [PDF]

open access: yesPizhūhish/hā-yi Rūstāyī, 2020
Cash-rent farming has developed during recent years in Iran; this phenomenon has had a greater impact especially in fertile regions with the abundant sources of water and soil.
Maryam Ghanbari   +2 more
doaj   +1 more source

An identity for the Dedekind eta-function involving two independent complex variables [PDF]

open access: yes, 2007
The authors prove a new identity for the Dedekind eta-function that involves third powers of the eta-function, with each of the two cubes being a function of a different complex ...
Berndt, Bruce C., Hart, William B.
core   +1 more source

Rudolf Trebitsch: Euskal hizkuntzaren eta musikaren grabazioak (1913)

open access: yesFontes Linguae Vasconum, 1998
1913ko udan, Vienako Zientzietako Akademia Inperialaren aginduz, bertako kide bat, Rudolf Trebitsch etnologo ospetsua, Euskal Herrira etorri zen.
Marcelo Miguel López de Arana Arrieta   +1 more
doaj   +1 more source

Hydrogen Bond and Other Lewis Acid–Lewis Base Interactions as Preliminary Stages of Chemical Reactions

open access: yesMolecules, 2020
Various Lewis acid–Lewis base interactions are discussed as initiating chemical reactions and processes. For example, the hydrogen bond is often a preliminary stage of the proton transfer process or the tetrel and pnicogen bonds lead sometimes to the SN2
Sławomir J. Grabowski
doaj   +1 more source

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