Results 11 to 20 of about 21,239 (135)

Evaluation à l'échelle pilote d'un aérateur à cheminement prolongé [PDF]

open access: yes, 1988
En vue d'optimiser l'aération de substrats liquides à forte charge organique dissoute, un système d'aération fonctionnant selon te principe du "cheminement prolongé" a été conçu et construit à l'échelle pilote (3 000 L).
de la Noüe, J., Murray, P.
core   +1 more source

Énergie et climat : défis et innovations

open access: yesComptes Rendus. Géoscience, 2020
Access to energy is a key factor in the economic development of countries. We will first examine the evolution of different ways to access to energy and their correlations with world population and countries’ GDP.
Roux, Didier
doaj   +1 more source

Comment économiser la ressource eau en agriculture?

open access: yesRevue Internationale des Économistes de Langue Française, 2020
L ' irrigation représente plus de 70% de l ' utilisation d ' eau au niveau mondial et cette activité peut non seulement subir la rareté croissante de l ' eau mais aussi contribuer à sa raréfaction.
Catherine Benjamin   +1 more
doaj   +1 more source

Space‐Dependent Sobolev Gradients as a Regularization for Inverse Radiative Transfer Problems

open access: yesMathematical Problems in Engineering, Volume 2016, Issue 1, 2016., 2016
Diffuse optical tomography problems rely on the solution of an optimization problem for which the dimension of the parameter space is usually large. Thus, gradient‐type optimizers are likely to be used, such as the Broyden‐Fletcher‐Goldfarb‐Shanno (BFGS) algorithm, along with the adjoint‐state method to compute the cost function gradient.
Y. Favennec   +5 more
wiley   +1 more source

The specific selection function effect on clinker grinding efficiency in a dry batch ball mill [PDF]

open access: yes, 2008
Dry grinding experiments on cement clinker were carried out using a laboratory batch ball mill equipped with a torque measurement. The influence of the ball size distribution on the specific selection function can be approached by laboratory runs using ...
Belaadi, Salah   +2 more
core   +1 more source

Infrastructure numérique et environnement : l'impossible domestication de l'effet rebond [PDF]

open access: yes, 2009
International audienceLes technologies numériques de l'information et de la communication (TNIC) se généralisent dans un grand nombre de domaines de la vie collective et domestique.
Flipo, Fabrice, Gossart, Cédric
core   +3 more sources

Efficacité énergétique et formes urbaines : élaboration d’un outil d’optimisation morpho-énergétique

open access: yesCybergeo, 2016
This paper deals with the link between urban forms and energy balance. Nowadays, many French urban planners recommend dense and compact cities to suit the imperatives of sustainable development.
Laëtitia Arantes   +3 more
doaj   +1 more source

Optimizing gasification in downdraft fixed-bed gasifier through experimental and kinetic modeling

open access: yesCase Studies in Thermal Engineering
Gasification is an effective way of converting biomass into electricity. However, determining optimal conditions to reach higher temperature gradients and ensure thermal stability of the reactors for syngas production is challenging.
Hamado Ouedraogo   +3 more
doaj   +1 more source

Advancing small-scale biomass gasification (10–200 kW) for energy access: Syngas purification, system modeling and the role of artificial intelligence-A review

open access: yesEnergy Conversion and Management: X
Agro-industrial and food industries produce significant lignocellulosic bio-waste, which has a negative impact on the environment if poorly managed. Gasification provides a solution by converting this waste into energy.
Hamado Ouedraogo   +2 more
doaj   +1 more source

Une évaluation macroéconomique et sectorielle de la fiscalité carbone en France [PDF]

open access: yes, 1994
Cet article évalue l’impact macroéconomique et sectoriel d’une taxe carbone en France en utilisant le modèle Three-ME qui combine deux caractéristiques importantes pour cette analyse.
Callonnec, Gaël   +2 more
core   +2 more sources

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