Results 51 to 60 of about 163,710 (217)

Silicon‐Integrated Perovskite Photonic Laser Based on Bound States in Continuum

open access: yesLaser &Photonics Reviews, Volume 19, Issue 9, May 6, 2025.
A strategy to integrate perovskite coherent light sources onto commercial silicon platform is proposed. Based on the bound states in the continuum, the energy leakage from perovskite microdisk to silicon is totally removed, leading to the observation of perovskite lasers on silicon with a laser quality factor ∼4850.
Zhiyuan Gu   +9 more
wiley   +1 more source

Anomalous electronic transport in Quasicrystals and related Complex Metallic Alloys [PDF]

open access: yes, 2013
We analyze the transport properties in approximants of quasicrystals alpha-AlMnSi, 1/1-AlCuFe and for the complex metallic phase lambda-AlMn.
de Laissardière, Guy Trambly   +1 more
core   +5 more sources

Early Evidence of “Finance for Normal People” in the First Era of Globalization

open access: yesKyklos, Volume 78, Issue 2, Page 718-728, May 2025.
ABSTRACT In this paper, we unearth a forgotten study of Pierre Des Essars, the director of research at the Banque de France in the late 19th century, enriched with comments from contemporary financial analysts. Des Essars provides the first and only existing example of the actual composition of French individual portfolios during the Belle Époque.
Maxime Merli, Antoine Parent
wiley   +1 more source

Caractérisation des vents induits par les véhicules en mouvement et évaluation de leur potentiel éolien

open access: yesRevue des Énergies Renouvelables, 2019
Cette étude a été menée au Cameroun dans le département de la Menoua, région de l’Ouest avec pour objectif une meilleure connaissance des vents induits par les véhicules en mouvement, ainsi que leurs potentiels énergétiques.
S. Dongmo, J.K. Tangka, B.M. Djousse
doaj  

The ear against the eye : Vertov’s symphony [PDF]

open access: yes, 2010
Vertov defined the basic qualities of his Cine-Eye by means of a simple negation: it sees what remains inaccessible to the human eye. This means that in his films we see media-based and media-produced images that have nothing to do with the imitation of ...
Bulgakowa, Oksana
core  

Variation of tow force with velocity during offshore ploughing in granular materials [PDF]

open access: yes, 2012
Pipeline plough behaviour has been investigated by means of reduced scale physical model testing. A testing programme was devised to investigate the influence of permeability, relative density, and plough depth on the associated tow force measured ...
Bransby, Mark Fraser   +3 more
core   +1 more source

Opinion and report of the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) relating to an analysis of the health risks associated with exposure to caterpillars with stinging hairs and the development of management recommendations

open access: yesFood Risk Assess Europe, Volume 3, Issue 2, April 2025.
Abstract Several species of Lepidoptera with caterpillars bearing urticating hairs are increasing their range in metropolitan France from year to year, such as the pine processionary (Thaumetopoea pityocampa Denis et Schiffermüller 1775) whose presence was historically limited to the south of France, and which is gradually being observed in the north ...
Nicolas Desneux   +105 more
wiley   +1 more source

Enhanced Optical Gain Through Efficient Polaron Pairs Recombination in F8xBTy

open access: yesAdvanced Optical Materials, Volume 13, Issue 5, February 13, 2025.
To effectively design efficient optical gain media via Forster resonant energy transfer (FRET) is challenging. There is strong te competition between polaron pairs and stimulated emission. This is solved by designing copolymers with both charge transfer (CT) and FRET, resulting in significantly enhanced light amplification and optical gain. The results
Yongjie Huang   +10 more
wiley   +1 more source

Photosynthesis, water‐use and nitrogen relate to both plant height and leaf structure in 60 species from the Mediterranean

open access: yesFunctional Ecology, Volume 39, Issue 2, Page 567-582, February 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Within individuals and/or species of trees, the structure and gas exchange of sun‐exposed leaves from the outer part of the canopy have been found to relate to sampling height.
Eric Garnier   +5 more
wiley   +1 more source

Expansion des feuilles de tournesol en conditions environnementales fluctuantes : effets de la température, du rayonnement et du déficit hydrique

open access: yesOléagineux, Corps gras, Lipides, 2000
L’expansion et les divisions cellulaires dans les feuilles de tournesol ont été analysées dans des situations contrastées de température, de rayonnement et d’état hydrique du sol, en serre, au champ et en chambre de culture.
doaj   +1 more source

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