Results 41 to 50 of about 894,092 (233)

A balance of positive and negative regulators determines the pace of the segmentation clock

open access: yeseLife, 2015
Somitogenesis is regulated by a molecular oscillator that drives dynamic gene expression within the pre-somitic mesoderm. Previous mathematical models of the somitogenesis clock that invoke the mechanism of delayed negative feedback predict that its ...
Guy Wiedermann   +5 more
doaj   +1 more source

Neutrino mass matrix with U(2) flavor symmetry and neutrino oscillations

open access: yes, 1997
The three neutrino mass matrices in the $SU(5)\times U(2)$ model are studied focusing on the neutrino oscillation experiments. The atmospheric neutrino anomaly could be explained by the large $\nu_{\mu} - \nu_{\tau}$ oscillation.
A. Pomarol   +28 more
core   +1 more source

A numerical study of an inline oscillating cylinder in a free stream [PDF]

open access: yes, 2011
Simulations of a cylinder undergoing externally controlled sinusoidal oscillations in the free stream direction have been performed. The frequency of oscillation was kept equal to the vortex shedding frequency from a fixed cylinder, while the amplitude ...
Leontini, Justin S.   +2 more
core   +3 more sources

Parametric Resonance in Neutrino Oscillation: A Guide to Control the Effects of Inhomogeneous Matter Density [PDF]

open access: yes, 2016
Effects of the inhomogeneous matter density on the three-generation neutrino oscillation probability are analyzed. Realistic profile of the matter density is expanded into a Fourier series. Taking in the Fourier modes one by one, we demonstrate that each
Koike, Masafumi   +3 more
core   +3 more sources

Patterned activity within the local cortical architecture

open access: yesFrontiers in Neuroscience, 2010
The cerebral cortex is a vastly complex structure consisting of multiple distinct populations of neurons residing in functionally specialized cortical compartments.
Farran Briggs, W Martin Usrey
doaj   +1 more source

Cooperative Dynamics of an Artificial Stochastic Resonant System

open access: yes, 2009
We have investigated cooperative dynamics of an artificial stochastic resonant system, which is a recurrent ring connection of neuron-like signal transducers (NST) based on stochastic resonance (SR), using electronic circuit experiments.
Badzey   +20 more
core   +1 more source

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   +4 more sources

Behavior of shock waves formed in supersonic jet impinging on flat plate

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper focuses on the behavior of shock waves formed in an underexpanded impinging jet. The jet becomes underexpanded when the pressure ratio exceeds the critical value across the convergent nozzle discharging it.
Hiromasa SUZUKI   +2 more
doaj   +1 more source

A mechanism for high-frequency oscillation in ramjet combustors and afterburners [PDF]

open access: yes, 1956
An experimental investigation was made of the behavior of a small two-dimensional combustion chamber, burning a uniform mixture of air and fuel vapor under conditions of high-frequency oscillation or screech.
Marble, Frank E., Rogers, Don E.
core   +1 more source

Coupled oscillators, entangled oscillators, and Lorentz-covariant harmonic oscillators [PDF]

open access: yesJournal of Optics B: Quantum and Semiclassical Optics, 2005
Typos ...
Young S. Kim, Marilyn E. Noz
openaire   +3 more sources

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