Search results for "Coupling"

Contributions to the analysis and design of all-inductive filters with dielectric resonators

2003

In this work, three modern full-wave methods will be employed for the accurate analysis and efficient design of a novel family of all-inductive filters loaded with dielectric resonators. These techniques are the bi-orthonormal-basis combined with the orthonormal-basis method, the hybrid mode-matching/spectral method, and, finally, the BI-RME (Boundary Integral-Resonant Mode Expansion) method. Then, two prototypes of band-pass filters have been designed in this work using a CAD tool developed in the research groups implicated in this manuscript. The procedure described in this paper only involves a limited number of actual physical parameters at each step so that it is computationally very e…

Molecular mode-coupling theory applied to a liquid of diatomic molecules

2000

We study the molecular mode coupling theory for a liquid of diatomic molecules. The equations for the critical tensorial nonergodicity parameters ${\bf F}_{ll'}^m(q)$ and the critical amplitudes of the $\beta$ - relaxation ${\bf H}_{ll'}^m(q)$ are solved up to a cut off $l_{co}$ = 2 without any further approximations. Here $l,m$ are indices of spherical harmonics. Contrary to previous studies, where additional approximations were applied, we find in agreement with simulations, that all molecular degrees of freedom vitrify at a single temperature $T_c$. The theoretical results for the non ergodicity parameters and the critical amplitudes are compared with those from simulations. The qualitat…

Correction: Supported C60-IL-PdNPs as extremely active nanocatalysts for C–C cross-coupling reactions

2017

Correction for ‘Supported C60-IL-PdNPs as extremely active nanocatalysts for C–C cross-coupling reactions’ by Francesco Giacalone et al., J. Mater. Chem. A, 2016, 4, 17193–17206.

Heterogeneous Sonogashira Coupling over Nanostructured SiliaCat Pd(0)

2012

Sol–gel entrapped catalyst SiliaCat Pd(0) heterogeneously mediates the Sonogoashira coupling of different aryl halides and phenylacetylene either under thermal conditions or, much more efficiently, under microwave irradiation, affording good conversions of coupled products. Leaching of valued Pd is limited, and the catalyst can be reused.

Soil erosion modelling: A bibliometric analysis.

2021

16 Pags.- 12 Figs.- 8 Tabls.

Dynamical Casimir-Polder effect with Rydberg atoms

2014

We investigate the dynamics of Rydberg atoms trapped in front of an oscillating conducting mirror, that can be simulated by a wall with a periodically driven dielectric constant (dynamical mirror). We focus our attention on the probability of atomic excitation due to a dynamical Casimir-Polder effect, related to the near field of the image atom whose distance periodically changes as a consequence of the mirror's motion. The theoretical analysis of this system also aims to an experimental proposal to detect this new dynamical effect exploiting Rydberg atoms trapped in the vicinity of the dynamical mirror. Our results indicate that the number of excited atoms is high enough to allow detection…

TRACE Analysis of the MASLWR Primary/Containment Coupling Phenomena in Beyond Design Accident Scenario

2013

Stable products of spheres in the non-linear coupling of oscillators or quasi-periodic motions

2004

Abstract For generic families of vector fields or transformations, normally hyperbolic invariant products of spheres appear near partially elliptic rest points. To cite this article: M. Kammerer-Colin de Verdiere, C. R. Acad. Sci. Paris, Ser. I 339 (2004).

Model-Based Evaluation of Methods for Respiratory Sinus Arrhythmia Estimation

2021

OBJECTIVE: Respiratory sinus arrhythmia (RSA) refers to heart rate oscillations synchronous with respiration, and it is one of the major representations of cardiorespiratory coupling. Its strength has been suggested as a biomarker to monitor different conditions, and diseases. Some approaches have been proposed to quantify the RSA, but it is unclear which one performs best in specific scenarios. The main objective of this study is to compare seven state-of-the-art methods for RSA quantification using data generated with a model proposed to simulate, and control the RSA. These methods are also compared, and evaluated on a real-life application, for their ability to capture changes in cardior…

Magnetic Domain Imaging with a Photoemission Microscope

1997

ABSTRACTPhotoelectron emission microscopy (PEEM) has proven to be a versatile analytical technique in surface science. When operated with circularly polarized light in the soft x-ray regime, however, photoemission microscopy offers a unique combination of magnetic and chemical information. Exploiting the high brilliance and circular polarization available at a helical undulator beamline, the lateral resolution in the imaging of magnetic domain structures may be pushed well into the sub-micrometer range. Using a newly designed photoemission microscope we show that under these circumstances not only domains, but also domain walls can be selectively investigated. The high sensitivity of the te…