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On Polar Foliations and the Fundamental Group
(BIRKHAUSER VERLAG AG, 2011)
In this work we investigate the relation between the fundamental group of a complete Riemannian manifold M and the quotient between the Weyl group and reflection group of a polar action on M, as well as the relation between ...
Polar foliations and isoparametric maps
(SPRINGERDORDRECHT, 2012-02)
A singular Riemannian foliation F on a complete Riemannian manifold M is called a polar foliation if, for each regular point p, there is an immersed submanifold Sigma, called section, that passes through p and that meets ...
Stabilization of linear ion beam right-hand polarized instabilities by nonlinear Alfvén/ion-cyclotron waves
(Blackwell Publishing Ltd, 2003)
It is shown that ion-beam plasma electromagnetic right-hand polarized instabilities can be stabilized by nonlinear left-hand polarized waves. This phenomenon constitutes a nonlinear saturation mechanism for right-hand ...
Investigation of Ferroelectricity and Piezoelectricity in Polar and Non-polar Polymers
(2022-06-01)
An overview is presented of experimental investigations during two decades at the Polymer Group Prof. Bernhard Gross in Sao Carlos, Brazil, on the properties of piezoelectric polymers. The paper is focused on innovations ...
Microvariability in the optical polarization of 3C279
(EDP Sciences, 2003-12)
We present results of a microvariability polarization study in the violently variable quasar 3C279. We have resolved the polarization curves in the V band for this object down to timescales of minutes. We found two main ...
Electrochemical Regulation of Budding Yeast Polarity
(Public Library of Science, 2014-12)
Cells are naturally surrounded by organized electrical signals in the form of local ion fluxes, membrane potential, and electric fields (EFs) at their surface. Although the contribution of electrochemical elements to cell ...
Kinetics of the polarization reversal process in a non-constant applied electric field and the generalized superposition principle
(1996-12-01)
We analyze the results on polarization reversal by H. von Seggern and T. T. Wang (J. Appl. Phys., 56, 2448 (1984)) under the assumption of validity of a superposition principle in terms of a conveniently defined intrinsic ...
Contribution of NADPH oxidase to the establishment of hippocampal neuronal polarity in culture
(Company of Biologists Ltd., 2015)
Reactive oxygen species (ROS) produced by the NADPH oxidase (NOX) complex play
important physiological and pathological roles in neurotransmission and neurodegeneration,
respectively. However, the contribution of ROS to ...
Theoretical and Experimental Study of Polarization Dependent Loss in a Optical Recirculating Loop
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2011)
An experimental study of the Polarization Dependent Loss (PDL) is performed in an Optical Recirculating Loop (RCL). The RCL enables to simulate the transmission through various optical links using just one optical fiber ...