Search results for "Jet"

Grooving by Nd:YAG laser treatment

2000

Abstract The properties of the laser beam have been used to produce deep and thin grooves in metals, melted material being removed with the assistance of a high velocity gas. Preliminary experiments show that the geometry and the location of the gas inlet tube are the main parameters governing the evacuation of the scoria. The influence of the nature of the materials on the depth of the grooves is discussed from examination of the grooves realized on various metals (copper, aluminum, titanium,…). Finally, a statistical study is performed to indicate the parameters that have to be controlled to secure regular grooves. It appears that the groove width is not too much affected by parameter var…

Traduction de : Jimenez, Jimi et Herrasti, Lourdes, "Objets associés des fosses de la guerre civile en Espagne"

2017

International audience

Tematiikan, harmonian ja äänenkuljetuksen koherenssi Claude Debussyn pianoetydissä "pour les octaves"

2000

Event-by-event picture for the medium-induced jet evolution

2016

We discuss the evolution of an energetic jet which propagates through a dense quark-gluon plasma and radiates gluons due to its interactions with the medium. Within perturbative QCD, this evolution can be described as a stochastic branching process, that we have managed to solve exactly. We present exact, analytic, results for the gluon spectrum (the average gluon distribution) and for the higher n-point functions, which describe correlations and fluctuations. Using these results, we construct the event-by-event picture of the gluon distribution produced via medium-induced gluon branching. In contrast to what happens in a usual QCD cascade in vacuum, the medium-induced branchings are quasi-…

La realidad y el deseo. Formas de subjetividad femenina en la época moderna

2004

A partir de fuentes literarias y normativas, se explora la construcción de la subjetividad femenina en la época moderna, y más específicamente en el siglo XVIII. Se trata no tan sólo de la configuración de las mujeres como objeto de deseos masculinos, sino también y sobre todo como sujetos de sentimientos a quienes se concede una responsabilidad primordial en la regulación de los afectos.

De l'homme économique au sujet capable

2010

International audience

A innovative laterals hydro floating tilting systems for USV or surface nautical vehicles

2015

The proposed project shows the results obtained in the implementation and testing in lacustrine and marine environment of an innovative laterals hydro floating tilting systems control for USV or remote/autonomous surface nautical vehicles. This vehicle is based on a pending patent belonging to Palermo University (Patent Pending RM2012A000209 and RM2012A000209). The system allows, during operation as a vehicle USV, set changes sailing trim and make turns with very narrow angle with little shunting movements. In fact the main benefits obtained were able to change or adjust the navigation structure by changing the tilt of one or two hydro floating during navigation without intervening directly…

X-ray and optical emission in protostellar jets: model predictions and comparison with observations

2007

Modeling the X-ray emission from the nearest jets: HH 154 and DG Tau

2010

X-ray Emission in protostellar jets

2005

Prompted by the recent detection of X-ray emission from Herbig-Haro objects, we studied the interaction between a supersonic jet originating from a young stellar object and the ambient medium; our aim is to investigate the mechanisms causing the X-ray emission. Our model takes into account the radiative losses from optically in plasmas and Spitzer's thermal conduction including saturation effects. We explored the parameter space defined by the density contrast between the ambient medium and the jet and by the Mach number, to infer the configurations which can give rise to X-ray emission. From the models, we derived the X-ray emission as it would be observed with Chandra/ACIS-I and XMM-Newto…