Results 11 to 20 of about 44,587 (300)

Beta cell secreted GABA sets appropriate insulin secretion by modulating islet calcium oscillations [PDF]

open access: yesMolecular Metabolism
Objectives: Gamma-aminobutyric acid (GABA) is produced in pancreatic beta cells and is implicated in modulating islet function, yet its precise physiological role remains uncertain.
Sandra M. Ferreira   +11 more
doaj   +2 more sources

Neural oscillations during conditional associative learning [PDF]

open access: yesNeuroImage, 2017
AbstractAssociative learning requires mapping between complex stimuli and behavioural responses. When multiple stimuli are involved, conditional associative learning is a gradual process with learning based on trial and error. It is established that a distributed network of regions track associative learning, however the role of neural oscillations in ...
Clarke, Alex   +2 more
openaire   +2 more sources

Oscillations in a nonlinear spring mechanism with one degree of freedom [PDF]

open access: yesMATEC Web of Conferences, 2020
A new method for studying dynamics in a nonlinear spring- loaded mechanism is described, which consists in describing a spring as an elastic solid rod with conditional density and elastic modulus.
Kondratenko Leonid, Mironova Lubov
doaj   +1 more source

Assessment of Inflation Schemes on Parameter Estimation and Their Application in ENSO Prediction in an OSSE Framework

open access: yesJournal of Marine Science and Engineering, 2023
The ensemble Kalman filter is often used in parameter estimation, which plays an essential role in reducing model errors. However, filter divergence is often encountered in an estimation process, resulting in the convergence of parameters to the improper
Yanqiu Gao
doaj   +1 more source

Minimality Condition and Atmospheric Neutrino Oscillations [PDF]

open access: yesPhysical Review Letters, 1998
A structure is proposed for the mass matrices of the quarks and leptons that arises in a natural way from the assumption that the breaking of SO(10) gauge symmetry is achieved by the smallest possible set of vacuum expectation values. This structure explains well many features of the observed spectrum of quarks and leptons.
Albright, Carl H.   +2 more
openaire   +2 more sources

Non-oscillation of half-linear differential equations with periodic coefficients

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
We consider half-linear Euler type differential equations with general periodic coefficients. It is well-known that these equations are conditionally oscillatory, i.e., there exists a border value given by their coefficients which separates oscillatory ...
Petr Hasil, Michal Veselý
doaj   +1 more source

Oscillation and non-oscillation criterion for Riemann–Weber type half-linear differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
By the combination of the modified half-linear Prüfer method and the Riccati technique, we study oscillatory properties of half-linear differential equations.
Petr Hasil, Michal Veselý
doaj   +1 more source

Characterization of information-based learning benefits with submovement dynamics and muscular rhythmicity. [PDF]

open access: yesPLoS ONE, 2013
For skill advancement, motor variability must be optimized based on target information during practice sessions. This study investigated structural changes in kinematic variability by characterizing submovement dynamics and muscular oscillations after ...
Ing-Shiou Hwang   +3 more
doaj   +1 more source

Condition for minimal harmonic oscillator action [PDF]

open access: yesAmerican Journal of Physics, 2017
We provide an elementary proof that the action for the physical trajectory of the one-dimensional harmonic oscillator is guaranteed to be a minimum if and only if τ<π/ω, where τ is the elapsed time and ω is the oscillator's natural frequency.
openaire   +2 more sources

Circadian regulation of dentate gyrus excitability mediated by G-protein signaling

open access: yesCell Reports, 2023
Summary: The central circadian regulator within the suprachiasmatic nucleus transmits time of day information by a diurnal spiking rhythm driven by molecular clock genes controlling membrane excitability.
Jose Carlos Gonzalez   +8 more
doaj   +1 more source

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