Results 51 to 60 of about 10,464,066 (302)

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

open access: yes, 2015
We investigate perturbed second order Euler type half-linear differential equations with periodic coefficients and with the perturbations given by the finite sums of periodic functions which do not need to have any common period.
P. Hasil, M. Veselý
semanticscholar   +1 more source

Updated constraints on non-standard interactions from global analysis of oscillation data [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe quantify our present knowledge of the size and flavor structure of non-standard neutrino interactions which affect the matter background in the evolution of solar, atmospheric, reactor and long-baseline accelerator neutrinos as determined by ...
I. Esteban   +4 more
semanticscholar   +1 more source

Neutrino Mass and Dark Matter [PDF]

open access: yes, 1998
Despite direct observations favoring a low mass density, a critical density universe with a neutrino component of dark matter provides the best existing model to explain the observed structure of the universe over more than three orders of magnitude in ...
Caldwell, David O.
core   +3 more sources

Complete hyperelliptic integrals of the first kind and their non-oscillation [PDF]

open access: yes, 2002
Let P(x) be a real polynomial of degree 2g + 1, H = y 2 + P(x) and δ(h) be an oval contained in the level set {H = h}. We study complete Abelian integrals of the form I(h) = ∫ δ(h) (α 0 + α 1 x +... + α g-1 x g-1 /y)dx y, h ∈ Σ, where α i are real and E ⊂
L. Gavrilov, I. Iliev
semanticscholar   +1 more source

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Various Oscillation Patterns of Serum Fibroblast Growth Factor 21 Concentrations in Healthy Volunteers [PDF]

open access: yesDiabetes & Metabolism Journal, 2012
BackgroundFibroblast growth factor 21 (FGF21) was originally identified as a paroxysm proliferator activated receptor-α target gene product and is a hormone involved in metabolic regulation.
Sang Ah Lee   +8 more
doaj   +1 more source

Solar neutrinos: global analysis and implications for SNO [PDF]

open access: yes, 2001
We present a global analysis of all the available solar neutrino data treating consistently the 8B and hep neutrino fluxes as free parameters. The analysis reveals at 99.7% C.L.
Bahcall, John N.   +2 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Self- excited oscillation under the influence of non - linear frictions

open access: yesVietnam Journal of Mechanics, 1982
In this article the influence of friction R1, R2 on Van der Pol oscillator is considered. It turned out that the mentioned frictions decrease the amplitude of self – excited oscillations and they stabilize the equilibrium position of the self – excited ...
Nguyen Van Dao
doaj   +1 more source

On the Oscillation of Impulsive Neutral First-order Differential Equations with Variable Arguments

open access: yesJournal of Scientific Research in Science, 2022
Throughout the article, we study the oscillation of a general class of first-order neutral differential equations in presence of variable delays under the effect of impulses.
S. Euat Tallah   +2 more
doaj   +1 more source

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