Results 41 to 50 of about 61,335 (234)

Metal‐Enhanced Charge Transport and its Mechanism in Atomically Precise Ruthenium Single‐Molecule Devices

open access: yesAdvanced Science, EarlyView.
An atomically precise platform was developed for investigating single‐molecule charge transport. This innovative platform enables the creation of highly uniform molecular devices using ruthenium‐based molecules. It reveals a significant enhancement in molecular conductance due to the metallic ruthenium center and a unique barrier‐lowering effect during
Jie Guo   +15 more
wiley   +1 more source

Evaluation of the Physical Stability of Zinc Oxide Suspensions Containing Sodium Poly-(acrylate) and Sodium Dodecylsulfate. [PDF]

open access: yes, 2011
The physical stability of zinc oxide (ZnO) aqueous suspensions has been monitored during two months by different methods of investigation. The suspensions were formulated with ZnO at a fixed concentration (5 wt%), sodium poly-(acrylate), as a viscosifier,
Ahmed-Zaïd, Toudert   +5 more
core   +1 more source

Recherches sur la structure et les propriétés des composés phénoliques polymérisés des vins rouges

open access: yesOENO One, 1974
Les tanins du vin sont un mélange de polymères de flavanes plus ou moins condensés appelés flavolanes dont la structure varie suivant l'âge et l'état physico-chimique du vin.
Yves GLORIES
doaj   +1 more source

Flux de CO2 consommé par altération chimique continentale : influences du drainage et de la lithologie = CO2 flux consumed by chemical weathering of continents : influences of drainage and lithology [PDF]

open access: yes, 1993
The flux of atmospheric/soil CO2 consumed by chemical weathering of the continents (FCO2) can be estimated from bicarbonate concentrations in surface water.
Amiotte Suchet, Philippe   +1 more
core  

Forming electrochemically active biofilms from garden compost under chronoamperometry [PDF]

open access: yes, 2008
Dimensionally stable anodes (DSA) were polarized at different constant potential values for several days in garden compost. After an initial lag period ranging from 1 to 10.5 days, the current increased fast and then stabilized for days.
Bergel, Alain   +2 more
core   +2 more sources

Détermination de la sensibilité potentielle des roches cristallophylliennes à l'altération chimique à partir de leur composition chimique [PDF]

open access: yes, 2010
9 pages, 2 tableauxNational audienceLa sensibilité potentielle des roches cristallines à l'hydrolyse dépend très fortement de leur composition minéralogique.
Martin, Claude
core   +2 more sources

Eucalyptus oleosa Essential Oils: Chemical Composition and Antimicrobial and Antioxidant Activities of the Oils from Different Plant Parts (Stems, Leaves, Flowers and Fruits) [PDF]

open access: yes, 2011
Essential oils obtained by hydrodistillation from the different parts (stems, adult leaves, immature flowers and fruits) of Eucalyptus oleosa were screened for their antioxidant and antimicrobial properties and their chemical composition. According to GC-
Ahmed Lebrihi   +21 more
core   +4 more sources

Metal Nanoparticles on Halloysite Applied in Stereoselective Hydrogenation of Tetrasubstituted Alkenes

open access: yesChemistry – A European Journal, EarlyView.
Composite materials based on metal nanoparticles supported on a naturally occurring nanotubular clay, halloysite (HAL), led to the diastereoselective hydrogenation of tetra‐substituted alkenes under relatively smooth conditions, mainly oxazolidinone‐based heterocycles.
Rosa Pich   +9 more
wiley   +1 more source

Caractérisations quantitative et qualitative des performances laitières des troupeaux bovins menés en hors sol dans une zone littorale semi-aride (Tunisie)

open access: yesRevue Marocaine des Sciences Agronomiques et Vétérinaires, 2016
Cet article vise le cheptel bovin laitier chez les éleveurs adhérents au programme de contrôle laitier mené par l’Office d’Élevage et des Pâturages (OEP).
Amani HOUCHATI   +2 more
doaj  

The contribution of weathering of the main Alpine rivers on the global carbon cycle [PDF]

open access: yes, 2013
On geological time-scales the carbon fluxes from the solid Earth to the atmosphere mainly result from volcanism and metamorphic-decarbonation processes, whereas the carbon fluxes from atmosphere to solid Earth mainly depend on weathering of silicates and
Donnini, Marco   +5 more
core  

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