نتایج جستجو برای: potential

تعداد نتایج: 1067793  

2015
Gwladys Ravon Yves Coudière Angelo Iollo Olivier Bernus Richard D. Walton

Optical mapping allows to visualize cardiac action potentials (AP) on cardiac tissue surfaces by uorescence using voltage-sensitive dyes. So far, the surface measurements are directly related to surface AP. In a previous study was developed a method to reconstruct threedimensional depolarization front: the main idea was to solve an inverse problem using the experimental measures on the surfaces...

2017
Rafael C Couto Vinícius V Cruz Emelie Ertan Sebastian Eckert Mattis Fondell Marcus Dantz Brian Kennedy Thorsten Schmitt Annette Pietzsch Freddy F Guimarães Hans Ågren Faris Gel'mukhanov Michael Odelius Victor Kimberg Alexander Föhlisch

The dynamics of fragmentation and vibration of molecular systems with a large number of coupled degrees of freedom are key aspects for understanding chemical reactivity and properties. Here we present a resonant inelastic X-ray scattering (RIXS) study to show how it is possible to break down such a complex multidimensional problem into elementary components. Local multimode nuclear wave packets...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
John F Lindner Matthew Bennett Kurt Wiesenfeld

Noise and coupling can optimize the response of arrays of nonlinear elements to periodic signals. We analyze such array-enhanced stochastic resonance (AESR) using finite-state transition rate models. We simply derive the transition rate matrices from the underlying potential energy function of the corresponding Langevin problem. Our implementation exploits Floquet theory and provides useful the...

Journal: :Applied Mathematics and Computation 2006
L. P. Gimenes M. Federson

One of the most important parts of the qualitative theory in differential equations is the stability of solutions. The problem of stabilizing the solutions by imposing proper impulse controls is very important to many areas of the sciences and engineering. It is important, for instance, in pharmacokinetics, biotechnology, economics, chemical technology and others. We consider certain second ord...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Golam Rasul George A Olah G K Surya Prakash

Structures of the isomeric adamantanediyl dications C(10)H(14)(2+) and protio-1- and protio-2-adamantyl dications C(10)H(16)(2+) were investigated by using the density functional theory (DFT) method at the B3LYP/6-31G** level. Four structures, 1 b-e, were found to be minima on the potential energy surface of C(10)H(14)(2+). The 1,3-adamantanediyl dication 1b with two bridgehead tertiary carboca...

Journal: :The Journal of chemical physics 2005
Larry A Viehland Rhonda Webb Edmond P F Lee Timothy G Wright

We calculate accurate potential energy curves for HeO(-), NeO(-), and ArO(-), including the full counterpoise correction and allowing for spin-orbit effects. Comparison with previous curves is presented, where these are available. The three curves, (2)Sigma(12) (+), (2)Pi(12), and (2)Pi(32), are used to derive spectroscopic constants and to calculate the transport coefficients for O(-) moving i...

2008
Kari Enqvist Lotta Mether Sami Nurmi

We consider the supergravity origin of the recently proposed MSSM inflationary model, which relies on the existence of a saddle point along a dimension six flat direction. We derive the conditions that the Kähler potential has to satisfy for the saddle point to exist irrespective of the hidden sector vevs. We show that these conditions are satisfied by a simple class of Kähler potentials, which...

1998
T. RAUSCHER

The current status of optical potentials employed in the prediction of thermonuclear reaction rates for astrophysics in the Hauser–Feshbach formalism is discussed. Special emphasis is put on α+nucleus potentials. Further experimental efforts are motivated.

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