Results 101 to 110 of about 111,047 (227)

Volumetric Comparison of Overall Brain and Neuropil Size Between Social and Non‐social Spiders: Exploring the Social Brain Hypothesis

open access: yesIntegrative Zoology, EarlyView.
Brain size may be influenced by the cognitive demands of sociality (social brain hypothesis). We used microCT to compare CNS and brain volumes in social versus solitary huntsman and crab spiders. Social huntsman spiders had larger arcuate and mushroom bodies, while social crab spiders had larger visual neuropils.
Vanessa Penna‐Gonçalves   +6 more
wiley   +1 more source

The formation of self‐concept and intrinsic value in arts‐related domains: Extending the generalized internal/external frame of reference model to music and visual arts

open access: yesBritish Journal of Educational Psychology, EarlyView.
Abstract Background The internal/external frame of reference (I/E) model explains the formation of domain‐specific academic self‐concepts. The generalized I/E (GI/E) model extends the I/E model to other motivational constructs, such as intrinsic value, and to various school subjects.
A. Katrin Arens   +3 more
wiley   +1 more source

Intermolecular Nuclear Spin Hyperpolarization Transfer via Cross‐Relaxation Triggers RASER of Solute Molecules

open access: yesAngewandte Chemie, Volume 138, Issue 19, 4 May 2026.
Radiofrequency amplification by stimulated emission of radiation (RASER) of solutes was achieved via parahydrogen‐induced polarization (PHIP) and polarization transfer from the produced hyperpolarization donors to solutes via the intermolecular nuclear Overhauser effect (NOE).
Ivan A. Trofimov   +8 more
wiley   +2 more sources

Non-local elliptic systems on the Heisenberg group

open access: yesElectronic Journal of Differential Equations, 2016
We present Liouville type results for certain systems of nonlinear elliptic equations containing fractional powers of the Laplacian on the Heisenberg group.
Nasser Al-Salti, Sebti Kerbal
doaj  

Hardy’s inequalities for the twisted convolution with Laguerre functions

open access: yesJournal of Inequalities and Applications, 2017
In this article, two types of Hardy’s inequalities for the twisted convolution with Laguerre functions are studied. The proofs are mainly based on an estimate for the Heisenberg left-invariant vectors of the special Hermite functions deduced by the ...
Jinsen Xiao, Jianxun He
doaj   +1 more source

No evidence of a decoy effect in bees: Rewardless flowers do not increase bumblebees' preference for neighbouring flowers

open access: yesEcological Entomology, EarlyView.
Many plants retain nectarless flowers; we tested whether these act as “decoys” for bees by making neighbouring rewarding flowers seem more valuable—a cognitive bias known as the decoy effect. The presence of decoy flowers did not shift bumblebee preferences between two equally rewarding inflorescences, and bees quickly learned to avoid these nectarless
Mélissa Armand   +3 more
wiley   +1 more source

Plancherel transform criteria for Weyl-Heisenberg frames with integer oversampling

open access: yes, 2002
We investigate the relevance of admissibility criteria based on Plancherel measure for the characterization of tight Weyl-Heisenberg frames with integer oversampling.
Fuehr, Hartmut
core  

S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea

open access: yesThe FEBS Journal, EarlyView.
S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels   +7 more
wiley   +1 more source

Tubular Surfaces Around Timelike Biharmonic Curves in Lorentzian Heisenberg Group Heis3

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
In this paper, we describe a new method for constructing a tubular surface surrounding a timelike biharmonic curve in the Lorentzian Heisenberg group Heis3. Firstly, we characterize timelike biharmonic curves in terms of their curvature and torsion. Also,
Körpinar Talat, Turhan Essin
doaj   +1 more source

Spectral form factor as an OTOC averaged over the Heisenberg group

open access: yesPhysics Letters B, 2019
We prove that in bosonic quantum mechanics the two-point spectral form factor can be obtained as an average of the two-point out-of-time ordered correlation function, with the average taken over the Heisenberg group.
Robert de Mello Koch   +3 more
doaj   +1 more source

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