Results 51 to 60 of about 3,555,319 (320)

Kinetochore alignment within the metaphase plate is regulated by centromere stiffness and microtubule depolymerases [PDF]

open access: yes, 2010
During mitosis in most eukaryotic cells, chromosomes align and form a metaphase plate halfway between the spindle poles, about which they exhibit oscillatory movement. These movements are accompanied by changes in the distance between sister kinetochores,
Amaro, Ana C.   +14 more
core   +6 more sources

Necessary and Sufficient Conditions of Oscillation in First Order Neutral Delay Differential Equations

open access: yesAbstract and Applied Analysis, 2014
We are concerned with oscillation of the first order neutral delay differential equation [x(t)−px(t−τ)]′+qx(t−σ)=0 with constant coefficients, and we obtain some necessary and sufficient conditions of oscillation for all the solutions in respective cases
Songbai Guo, Youjian Shen, Binbin Shi
doaj   +1 more source

Oscillations of Thick Accretion Discs Around Black Holes - II

open access: yes, 2005
We present a numerical study of the global modes of oscillation of thick accretion discs around black holes. We have previously studied the case of constant distributions of specific angular momentum. In this second paper, we investigate (i) how the size
E. Rubio-Herrera, van Putten, W. H. Lee
core   +2 more sources

Tunable Hybridization at Mid Zone and Anomalous Bloch-Zener Oscillations in Optical Waveguide Ladders [PDF]

open access: yes, 2010
We have studied the optical oscillation and tunneling of light waves in optical waveguide ladders formed by two coupled planar optical waveguide arrays.
Bloch   +18 more
core   +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

New equivalent conditions for Hardy-type inequalities [PDF]

open access: yesMathematica Bohemica
We consider a Hardy-type inequality with Oinarov's kernel in weighted Lebesgue spaces. We give new equivalent conditions for satisfying the inequality, and provide lower and upper estimates for its best constant.
Alois Kufner   +3 more
doaj   +1 more source

Superalgebra and Harmonic Oscillator with Constant Positive Curvature

open access: yesInternational Journal of Theoretical Physics, 2007
This paper has been ...
Sadeghi, J., Moayyeri, H.
openaire   +3 more sources

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

Magnon-driven dynamics of frustrated skyrmion in synthetic antiferromagnets: effect of skyrmion helicity oscillation

open access: yesNew Journal of Physics, 2022
A theoretical study on the interplay of frustrated skyrmion and magnons should reveal new physics and future experiment designs. In this study, we investigate the magnon-driven dynamics of frustrated skyrmion in synthetic antiferromagnets based on ...
Z Jin   +10 more
doaj   +1 more source

Fully computable a posteriori error bounds for hybridizable discontinuous Galerkin finite element approximations [PDF]

open access: yes, 1956
We derive a posteriori error estimates for the hybridizable discontinuous Galerkin (HDG) methods, including both the primal and mixed formulations, for the approximation of a linear second-order elliptic problem on conforming simplicial meshes in two and
Ainsworth, Mark, Fu, Guosheng
core   +3 more sources

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