Results 31 to 40 of about 163,710 (217)
Physical description of an isentropic flow in a Laval nozzle
Revue des Énergies Renouvelables, 2016 The convergent-divergent nozzles have many industrial uses such as wind turbine, the blades of turbine engines, aircraft wings and screw propeller. The main objective of this study is to identify and evaluate the physical properties of the compressible ...
M. Ghodbane, B. Boumeddane
doaj
Oil & Gas Science and Technology, 2006 The wavelet transform can be used to develop the process which allows group and phase velocity measurement of dispersive waves. The method has been applied to acoustic data to measure formation velocities. The behavior and the accuracy of the method have
Thirion N. +3 more
doaj +1 more source
Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1987 C'est à partir des opérations de contrôle de performances développées dans une cinquantaine de troupeaux sédentaires et communautaires de 6 régions du Nord de la Côte d'Ivoire, qu'a été estimée l'incidence des principaux facteurs de variation sur la ...
Jean-Paul Poivey +3 more
doaj +1 more source
Figures de la psychanalyse, 2013 Dans une cure avec un sujet maniaque, la question de la vitesse – dans la parole, dans les agissements, dans la pensée – est souvent convoquée. À travers l’analyse d’un cas clinique, nous verrons comment la vitesse, pour un sujet en phase maniaque, tient une fonction de défense face à son écroulement mélancolique, mais elle constitue en même temps un ...
openaire +2 more sources
From aether theory to Special Relativity
, 2013 At the end of the 19th century light was regarded as an electromagnetic wave propagating in a material medium called ether. The speed c appearing in Maxwell's wave equations was the speed of light with respect to the ether.
Ferraro, Rafael
core +1 more source
Irrigation and Drainage, Volume 74, Issue 4, Page 1818-1829, October 2025.ABSTRACT Irrigation water supply is under scrutiny because of dwindling water resources. Most irrigation water in South Africa (SA) is transmitted by canals. Transmission water loss (TWL) accounts for 12% of the irrigation water losses in SA. Therefore, there is a need to investigate and understand the major parameters influencing TWL at Vaalharts ...
M. Mutema +5 more
wiley +1 more source
The Speed of Light and the Fine Structure Constant
, 2000 The fine structure constant $\alpha $ includes the speed of light as given by $\alpha =\frac{e^{2}}{4\pi \epsilon_{0}c\hbar}$. It is shown here that, following a $TH\epsilon \mu $ formalism, interpreting the permittivity $\epsilon_{0}$ and permeabiliy ...
Alfonso-Faus, Antonio
core +1 more source
Numerical stabilization of the Stokes problem in vorticity–velocity–pressure formulation [PDF]
, 2006 We work on a vorticity, velocity and pressure formulation of the bidimensional Stokes problem for incompressible fluids. In previous papers, the authors have developed a natural implementation of this scheme.
Salaün, Michel, Salmon, Stéphanie
core +2 more sources
Clogging Analysis in Drip Irrigation Systems: CFD and DEM Approaches
Irrigation and Drainage, Volume 74, Issue 4, Page 1395-1409, October 2025.ABSTRACT Clogging represents a critical challenge that undermines the efficiency and sustainability of drip irrigation systems by inducing uneven water distribution and increasing maintenance requirements. In this study, the phenomenon of clogging in drip emitters was investigated via computational fluid dynamics (CFD) in conjunction with the discrete ...
Nuri Orhan, Berk Kalem
wiley +1 more source
Fast and Slow Speech Rate: a Characterisation for French [PDF]
, 1998 This paper is concerned with the evaluation of speech rate in French. Usually, this dynamic parameter is described as a unidimensional quantitative dimension.
Zellner, Brigitte
core +1 more source