Results 41 to 50 of about 10,257 (156)

Benzylic Oxidation of Pillar[5]Arene: From Homo‐ to Cross‐Conjugated Macrocyclic Systems

Chemistry – A European Journal, EarlyView.
Selective benzylic oxidations of pillar[5]arene have been carried out to generate all the possible oxidized derivatives containing from one up to five carbonyl subunits. Effects resulting from the homo‐ and the cross‐conjugation within this series of compounds have been investigated in details and analyzed with the help of DFT calculations.
Jorge Juan Marco‐Guimbao, Eric Meichsner, Unai Calvo, Michel Holler, Béatrice Delavaux‐Nicot, Jon M. Matxain, Juan Luis Delgado, Jean‐François Nierengarten, Iwona Nierengarten   +8 more
wiley   +1 more source

Influence des paramètres matériaux sur le comportement des élastomères Influence of the material parameters on the mechanical properties of rubbers

MATEC Web of Conferences, 2013
Le comportement sous sollicitations cycliques des matériaux élastomères induit un adoucissement, une déformation rémanente et une anisotropie. Le travail présenté portera sur la caractérisation de ces phénomènes d'endommagements afin d'établir des liens ...
Merckel Yannick, Brieu Mathias, Diani Julie   +2 more
doaj   +1 more source

Bridging Policy Gaps in Transition Times: How Local Actors Navigate Low Policy Coherence for Advancing a Circular Built Environment

Environmental Policy and Governance, EarlyView.
ABSTRACT The construction sector is a major contributor to the climate crisis, accounting for over one‐third of global energy‐related CO2 emissions. In response, the European Commission identified the circular economy as a means of achieving green growth and prioritized the construction sector in its Circular Economy Action Plan.
A. (Angeline) Chartier, W. D. (Wieke) Pot   +1 more
wiley   +1 more source

Caractérisation géotechnique de matériaux améliorés au liant végétal le néré (Parkia biglobosa) pour la stabilisation des sols routiers en Côte d’Ivoire

Revue Congolaise des Sciences et Technologies
Le développement des infrastructures routières en matière de construction, d’amélioration et d’entretien exige l’amélioration des propriétés mécaniques et/ou chimiques des matériaux.
N’dri N’dri, A. Koudou, A. S. Djomo, J .-B. W. Djole   +3 more
doaj   +1 more source

A Green Scalable Method to Prepare Zr Oxide Dicarboxylate Metal–Organic Frameworks

European Journal of Inorganic Chemistry, EarlyView.
A greener approach for large‐scale synthesis of MIL‐140(Zr) family for cultural heritage preservation. We report the synthesis of a series of isoreticular hydrophobic microporous zirconium dicarboxylate metal–organic frameworks (MOFs), MIL‐140(Zr)s, under green ambient pressure conditions.
Debanjan Chakraborty, Sanchari Dasgupta, Oleksii Kolmykov, Maria Inês Severino Neves, Vanessa Pimenta, Abeer Mohtar, Cátia Freitas, Iurii Dovgaliuk, Moises L. Pinto, Georges Mouchaham, Farid Nouar, Christian Serre   +11 more
wiley   +1 more source

Virus-Mediated Self-Assembly of Functional Cyclodextrins for Antiviral Inhibition. [PDF]

Angew Chem Int Ed Engl
A sialic acid (SA)‐functionalized cyclodextrin (CD) self‐assembles on SARS‐CoV‐2 through ligand–receptor recognition, nucleating cooperative supramolecular polymer growth that blocks infection. The adaptive assembly requires both ligand binding and host–guest polymerization, remains active across variants, and can be tuned by coassembly, establishing ...
Hernando PJ, Boulo L, Lavnevich L, Teyssou E, Marot S, Gothland A, Guigner JM, Marcelin AG, Ménand M, Calvez V, Sollogoub M.   +10 more
europepmc   +3 more sources

Inline Oxygenation in Drip‐Irrigated Citrus: How Much Agrochemical Reduction Is Needed to Achieve Net Environmental Benefits?

Irrigation and Drainage, EarlyView.
ABSTRACT The agronomic benefits of oxygen‐enriched irrigation, such as improved root development, enhanced nutrient uptake, and reduced fertiliser and pesticide requirements, are well documented. However, incorporating oxygenation devices into fertigation systems increases energy demand and material use, thereby incurring additional environmental ...
Alberto Imbernón‐Mulero, Saker Ben Abdallah, Mohamed Zied Dhraief, Jose F. Maestre‐Valero, Belén Gallego‐Elvira   +4 more
wiley   +1 more source

Optimisation des couts des bâtiments en béton arme au Tchad : une étude qualitative des solutions innovantes adoptées dans la conception [PDF]

Akofena
Résumé : Cette recherche porte sur l’optimisation du coût global durable des bâtiments en béton armé, en mettant en lumière les perceptions et pratiques des acteurs locaux.
Abdoulaye BICHARA, Hammouda ABDELAZIZ & Koina RODOUMTA
doaj   +1 more source

Chain‐End Grafting of RAFT Polyelectrolyte Macroligands to Stabilize Near‐Infrared‐Emitting Gold Nanoclusters

Macromolecular Rapid Communications, EarlyView.
Surface‐functionalized gold nanoclusters (AuNCs) are synthesized in situ by chain‐end grafting of RAFT polyelectrolytes at room temperature directly in water. It leads to highly stable polymer‐AuNCs nanohybrids emitting near‐infrared photoluminescence with µs lifetimes. ABSTRACT With their photoluminescence properties, gold nanoclusters (AuNCs, d<2 nm)
Bárbara Casteleiro, Pierre Alcouffe, Fernande Da Cruz, Agnès Crépet, José Manuel Gaspar Martinho, Marie‐Thérèse Charreyre, José Paulo Sequeira Farinha, Arnaud Favier   +7 more
wiley   +1 more source

Traitement mécanique de volumes importants de terres infestées par des rhizomes de renouée du Japon : technique par criblage-concassage [PDF]

Sciences, Eaux & Territoires, 2019
Confrontée au manque de filière de traitement de gros volumes de matériaux infestés par des rhizomes de renouée du Japon, la Compagnie nationale du Rhône a développé une technique très efficace pour neutraliser immédiatement les terres infestées.
MOIROUD, Christophe, BRASIER, William, BRASIER, William   +2 more
doaj