Institution
ParisTech
Education•Paris, France•
About: ParisTech is a education organization based out in Paris, France. It is known for research contribution in the topics: Residual stress & Finite element method. The organization has 1888 authors who have published 1965 publications receiving 55532 citations. The organization is also known as: Paris Institute of Technology & ParisTech Développement.
Papers published on a yearly basis
Papers
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TL;DR: In this article, an inverse analytical method is developed to determine the temperature field and especially the temperature (and heat flux) at the surface of the roll by measuring the temperature with a thermocouple (fully embedded) at only one point inside the roll.
22 citations
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TL;DR: TrkB blockade appeared as a relevant approach to alleviate not only i.t. BDNF- but also nerve lesion-evoked neuropathic pain in intact healthy rats like those found after CCI-SN.
22 citations
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01 Jan 2009
TL;DR: In this article, a numerical investigation was carried out in a volute type centrifugal pump to study the influence of splitter blades and radial gap and decrease the pressure fluctuations levels at the blade passage frequency for the same operating conditions.
Abstract: A numerical investigation was carried out in a volute type centrifugal pump to study the influence of splitter blades and radial gap and decrease the pressure fluctuations levels at the blade passage frequency for the same operating conditions. In this kind of turbomachinery, the strong interaction between the flow leaving the impeller and entering the volute casing generate pulsating pressures which propagate toward the inlet and the discharge of the pump. They are mainly associated to the blade passage frequency presenting high amplitudes near the tongue and at impeller discharge. Three configurations were considered in the numerical tests, the first hydraulic is the reference geometry to be optimized and the other two are the versions modified for decrease pressure fluctuations. The geometrical changes concern: adding splitter blades to the original impeller and increasing the radial gap between the splitter impeller and the volute tongue. The simulations for all configurations were performed at the same flow rate. It was necessary to decrease the rotational speed of the optimized configurations to reach the same operating point. The pressure signals were collected by virtual sensors placed at several locations of the pump mainly at the impeller-volute interface plus at inlet and at outlet ducts. Then they were treated and processed obtaining the frequency spectrum by means of the Fast Fourier Transform, so the numerical results were compared and discussed. A commercial CFD code has been used to predict the pulsating pressures and the Unsteady Reynolds Averaged Navier-Stokes (URANS) approach has been applied to solve the unsteady, incompressible and turbulent flow. The k-ω SST model was used to take into account the turbulence effects and the standard wall functions were applied. The numerical procedure employed for the unsteady simulations was determined after an investigation of the influence of boundary conditions on the pressure signals specially at the outlet duct, showing that the condition of outflow does not have influence on the numerical results.Copyright © 2009 by ASME
22 citations
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TL;DR: In this article, the role of π-oligomers and H-ligomers in the formation of a supramolecular mixed network has been investigated using a solution-based approach on Au(111).
Abstract: Melamine and naphthalene tetracarboxylic diimide (NTCDI) supramolecular assemblies have been elaborated by a solution-based approach on Au(111) and studied by scanning tunneling microscopy (STM). We discuss the role of π-oligomers and H-oligomers in the mechanism of the network formation. Whereas the role of the first seems negligible, thermodynamical considerations establish the key role of the H-oligomers in the network extension in relation with the solvent nature. Density functional theory (DFT) calculations on the networks support the experimental structures. We discuss the influence and advantages of the solution method on the assemblies comparatively to ultrahigh vacuum (UHV) conditions. The NTCDI–melamine network exhibits a honeycomb structure which is obtained for the first time on the Au(111) substrate. The supramolecular mixed network is remarkably robust due to the stabilization from the triple hydrogen bonds established between the neighboring NTCDI and melamine molecules.
22 citations
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TL;DR: In this article, the authors shed some light on issues of territorial development and of rural development and identify what links and oppose them, and find that regional sciences are paying increasing attention to rural and agricultural dimensions, while studies concerning rural questions are starting to consider territorial issues.
Abstract: The aim of this article is to shed some light on issues of territorial development and of rural development and to identify what links and opposes them. Indeed, everything pushes towards joining these two dimensions, which for a long time seemed disconnected. On the one hand, the policies targeting rural areas explicitly include the territorial dimension, while the distinction between rural and urban is getting blurred. In the meantime, decentralization, subsidiarity, the regionalization of agriculture, short circuits and local foods take place in parallel with the generalization of an urban model. Finally, we find that regional sciences are paying increasing attention to rural and agricultural dimensions, while studies concerning rural questions are starting to consider territorial issues. The first section of the article provides a critical presentation and attempts to define and distinguish the notions of development, territory and the rural. The second section addresses questions of regional a...
22 citations
Authors
Showing all 1899 results
Name | H-index | Papers | Citations |
---|---|---|---|
Mathias Fink | 116 | 900 | 51759 |
George G. Malliaras | 94 | 382 | 28533 |
Mickael Tanter | 85 | 583 | 29452 |
Gerard Mourou | 82 | 653 | 34147 |
Catherine Lapierre | 79 | 227 | 18286 |
Carlo Adamo | 75 | 444 | 36092 |
Jean-François Joanny | 72 | 294 | 20700 |
Marie-Paule Lefranc | 72 | 381 | 21087 |
Paul B. Rainey | 70 | 222 | 17930 |
Vincent Lepetit | 70 | 268 | 26207 |
Bernard Asselain | 69 | 409 | 23648 |
Michael J. Baker | 69 | 394 | 20834 |
Jacques Prost | 68 | 198 | 19064 |
Jean-Philippe Vert | 67 | 235 | 17593 |
Jacques Mairesse | 66 | 310 | 20539 |