Results 131 to 140 of about 81,312 (294)

Atomic Precision CoCu Heterodimers with Pseudo‐D3h Symmetry Enable Tandem Nitrate Reduction

open access: yesAdvanced Science, EarlyView.
The Co─Cu heterodimer anchored on nitrogen‐doped graphene oxide substrate facilitates electrochemical nitrate reduction in alkaline medium. Co site promotes water dissociation to supply a proton, while Cu sites enhance nitrate adsorption and activation.
Akash Prabhu Sundar Rajan   +5 more
wiley   +1 more source

Mission d'appui au projet de développement de la filière laitière dans le bassin de Mbarara (Ouganda) : rapport de mission du 7/10 au 17/10/2001 [PDF]

open access: yes, 2001
Cette mission d'appui a permis de rencontrer l'ensemble des responsables des organismes intervenant dans le projet de développement de la filière laitière dans le bassin de MBarara.
Le Bas, Cédric, Tulasne, Jean-Jacques
core  

Programming Next‐Generation Synthetic Biosensors by Genetic Circuit Design

open access: yesAdvanced Science, EarlyView.
Synthetic biology enables genetic circuit‐based biosensing to detect diverse targets, process signals, and transduce them into readable outputs or intracellular regulatory activities. However, field deployment and real‐world application of such synthetic biosensors face considerable challenges in sensitivity, specificity, speed, stability, and ...
Yuanli Gao   +4 more
wiley   +1 more source

Harnessing Solar Energy for Ammonia Synthesis from Nitrogen and Seawater Using Oxynitride Semiconductors

open access: yesAdvanced Energy Materials, EarlyView.
In this work, the challenging green ammonia evolution is addressed by developing a photothermal system that utilizes nitrogen and natural seawater under simulated solar irradiation, employing ruthenium‐doped barium tantalum oxynitride semiconductors.
Yiyang Li   +4 more
wiley   +1 more source

Décentralisation de la formation professionnelle au Niger : analyse de l’expérience des Centres de Formation aux Métiers (CFM) dans les collectivités locales. Cas de la commune rurale de Koré Maïroua

open access: yesMu Kara Sani
Cet article décrit, dans un premier temps, le contexte de la décentralisation de la formation professionnelle au Niger. Il aborde ensuite la nécessité de doter les collectivités locales d’un outil à même de faciliter le développement local : la création ...
Ibrahim MALAM MAMANE SANI   +2 more
doaj  

Les métiers flous du développement rural [PDF]

open access: yes, 2005
Avec la notion de développement sont apparus des « nouveaux métiers » qui se caractérisent par une prescription globale très vague, une ambiguïté des rôles en particulier en relation avec les élus locaux, des statuts bricolés et des parcours ...
Jeannot, Gilles
core   +2 more sources

From Materials to Systems: Challenges and Solutions for Fast‐Charge/Discharge Na‐Ion Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review systematically analyzes the key characteristics limiting the fast‐charge/discharge capability of Na‐ion batteries (SIBs) from a multi‐scale perspective encompassing electrode materials, the electrode‐electrolyte interface, and the system. Furthermore, it presents practical solution strategies for the fundamental issues arising at each scale,
Bonyoung Ku   +5 more
wiley   +1 more source

Towards Climate Neutrality by 2050: Role of Aluminum for Short‐ and Long‐Term Energy and Hydrogen Storage

open access: yesAdvanced Energy Materials, EarlyView.
The Aluminum energy storage cycle involves the use of renewable energy for Al production and the generation of heat (dry cycle) and heat and H2 (wet cycle) for energy production via Al‐steam combustion. ABSTRACT Reaching climate neutrality by 2050 requires innovative long‐term energy storage (LTES) solutions beyond the current use of fossil fuels ...
Lorenzo Trombetti   +2 more
wiley   +1 more source

Horizons urbains, variations thématiques : cinquante ans d'études urbaines au sud du Sahara [PDF]

open access: yes, 2012
L'Afrique est plurielle dans ses traits géographiques, ses caractères culturels, son cheminement socio-historique et politique. Prétendre alors couvrir son cheminement urbain et les perspectives sous-jacentes relèveraient d'une prétention excessive, en ...
Yapi-Diahou, Alphonse
core   +2 more sources

Multimodal Strategy for Efficient Semi‐Transparent Perovskite Solar Cells and Modules with Record Indoor Performance

open access: yesAdvanced Energy Materials, EarlyView.
A multimodal strategy creates efficient semi‐transparent perovskite solar cells with a record 4.29% light utilization efficiency and 22.41% indoor performance. This approach enables the first scalable 30 x 30 cm2 semi‐transparent solar module, highlighting its potential for building‐integrated and indoor photovoltaics.
Siming Huang   +16 more
wiley   +1 more source

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