Results 41 to 50 of about 17,773 (211)

Analysing resilience of European beech tree to recurrent extreme drought events through ring growth, wood anatomy and stable isotopes

open access: yesJournal of Ecology, Volume 113, Issue 4, Page 955-973, April 2025.
Recent drought events in Central Europe have caused widespread forest dieback with detrimental effects on forest functioning. We investigated the physiological processes linked to water and carbon constraints involved in the resilience of beech cambial growth to drought.
Guangqi Zhang   +6 more
wiley   +1 more source

Advance Chemical Mechanical Polishing Technique for Gallium Nitride Substrate

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 2, January 20, 2025.
This review, systematically summarize the latest research advances both in conventional and assisted enhanced CMP of GaN. Abstract As the representative of substrate material, gallium nitride (GaN) has excellent mechanical properties and high thermal stability.
Xuanyi Zhao   +10 more
wiley   +1 more source

Adverse childhood experiences, brain efficiency, and the development of pain symptoms in youth

open access: yesEuropean Journal of Pain, Volume 29, Issue 1, January 2025.
Abstract Background Adverse childhood experiences (ACEs) are often reported by youths with chronic pain, and both ACEs and chronic pain disrupt how information is processed. However, it is unknown whether changes to shared neural networks underlie the relationship between ACEs and the development of pain symptoms.
Samantha Miller   +9 more
wiley   +1 more source

L’entreprise légale-mafieuse : efficience ou éthique ? [PDF]

open access: yes, 2015
This paper offers an institutional approach to the problems raised by Mafia infiltration of legitimate businesses. It contributes to an economic theory that reconnects economics, law and ethics.
Champeyrache, Clotilde
core  

Accurate Determination of the Uniaxial Complex Refractive Index and the Optical Band Gap of Polymer Thin Films to Correlate Their Absorption Strength and Onset of Absorption

open access: yesChemPhysChem, Volume 25, Issue 23, December 2, 2024.
A rainbow of polymers: An overview is given of the basic optical and dielectric properties of six selected polymers that have been processed into thin films. Their optical band gap energies are distributed over the entire visible spectral range. Is there a correlation between absorption onset and strength?
Alexander Kamptner   +2 more
wiley   +1 more source

Efficience des politiques de l’Etat pour une sécurité alimentaire en blé tendre au Maroc

open access: yesAlternatives Rurales, 2017
L’objectif visé par cet article est d’analyser, d’une part, le taux de couverture des besoins de consommation en blé tendre par la production nationale et, d’autre part, le coût d’intervention de l’Etat sur l’ensemble de la filière depuis le lancement du
Kawtar Rerhrhaye   +1 more
doaj  

Efficience des pratiques responsables des entreprises cotées en bourse de Casablanca. Une analyse par la méthode DEA

open access: yesRevue des Sciences Humaines et Sociales de l’Académie du Royaume du Maroc
Cet article a pour objectif l’évaluation de l'efficience des pratiques responsables, en tenant compte des trois dimensions du Triple Bottom Line (TBL) : économique, sociale et environnementale.
Otmane OUDRA, Khalid OULAD SEGHIR
doaj   +1 more source

Studying durability of units’ details of running gear’s friction of kamaz automobiles

open access: yesВестник СибАДИ, 2017
The article presents results of experimental (using developed method and a tribometr) and natural tests of lubrications’ efficiency of various structures and decreasing wear’s friction.
V. V. Evstifeev   +2 more
doaj   +1 more source

La privatisation tient-elle ses promesses? Le cas des pays en développement [PDF]

open access: yes, 1998
La littérature sur la privatisation a récemment proliféré à la suite de l’essor considérable qu’a connu ce phénomène de par le monde. Cependant, la plupart des études ont porté sur l’expérience des pays industrialisés. Tout en passant brièvement en revue
Boubakri, Narjess, Cosset, Jean-Claude
core   +1 more source

Efficient Exclusion

open access: yesSSRN Electronic Journal, 2005
In their influential paper, Aghion and Bolton (1987) argue that a buyer and a seller may agree on high liquidation damages in order to extract rents from future suppliers. As this may distort future trade, it may be socially wasteful. We argue that Aghion and Bolton's analysis of entry is incomplete in some respects, as there is only one potential ...
Moen, Espen R, Riis, Christian
openaire   +4 more sources

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