Results 91 to 100 of about 150,649 (280)
Importance économique du Port Autonome de Liège: rapport 2002 [PDF]
This paper provides an extensive overview of the economic importance and development of the Port Autonome de Liège, over the period 1997 - 2002. Focusing on the three major variables of value added, salaried employment and investment, it also provides ...
Frédéric Lagneaux
core
Chemistry – 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
Oil & Gas Science and Technology, 2006 Le présent article ne prétend pas être une étude bibliographique complète. II ne s'agit que d'une synthèse dont le but est l'introduction à un secteur de la chimie encore jeune et surtout très vaste et plein d'avenir.
Dorbon M.
doaj +1 more source
PROCESUL DE INSTRUIRE LA FACULTATEA DE BIOLOGIE ȘI CHIMIE PRIN PRISMA ASIGURĂRII CALITĂȚII
Acta et Commentationes: Ştiinţe Exacte şi ale Naturii, 2019 În acest studiu sunt scoase în evidență tendințele care se conturează în cadrul facultății de biologie și chimie în raport cu o serie de aspecte care țin de procesul de predare-învățare-evaluare: atitudinea studenților față de cursuri, prelegeri ...
Eugenia CHIRIAC, Ana ȚÎGANAȘ
doaj +1 more source
Alkyl Bismuth Cations: Synthesis, Characterization, and Application as Z‐Type Ligands
Chemistry – A European Journal, EarlyView.Rare examples of alkyl bismuth cations [BiR2(SbF6)] are presented, including cyclopropyl ligands and a bismacyclic structure. The bismuth‐centered Lewis acids act as Z‐type ligands toward the electron‐rich platinum atom in [Pt(PCy3)2], generating a set of metal‐only Lewis pairs. The structural and spectroscopic properties of these rare types of bismuth
Johannes Schwarzmann +7 more
wiley +1 more source
Alkene Hydrogenation by a Cationic, Nine‐Coordinate Molybdenum(VI) Pentahydride Catalyst
Chemistry – A European Journal, EarlyView.While late 3d metals dominate efforts to replace precious metals in homogeneous hydrogenation, molybdenum has remained largely ignored. This work reveals that a nine‐coordinate pentahydrido molybdenum complex can hydrogenate a broad range of alkenes efficiently, demonstrating that early‐metal polyhydrides can serve as genuine catalysts rather than mere
Arno Estival +9 more
wiley +1 more source
Revue Congolaise des Sciences et TechnologiesLa chimie d'une tourbière est largement conditionnée par celle de son eau, qui en représente la majeure partie. Cette étude vise à évaluer la chimie de l'eau dans les tourbières de la concession Era Congo en analysant les variations des paramètres ...
Glodi Kakoko Etepe +8 more
doaj +1 more source
Y(Ni, Mn)O3 epitaxial thin films prepared by pulsed laser deposition
, 2003 High–quality epitaxial YNixMn1-xO3 thin films have been successfully grown on SrTiO3 (100) (STO) by pulsed laser deposition. X-ray diffraction studies showed that the films deposited on STO are fully c-axis oriented and exhibit in-plane alignment ...
Duclère +8 more
core +1 more source
Bayesian Optimization of Solvent‐Free Thermal Amidation via Reactive Extrusion
Chemistry – A European Journal, EarlyView.Thermal amidation between a carboxylic acid and an amine was successfully conducted in an extruder in the absence of solvent, coupling agent, or catalyst, relying on an adapted Bayesian Optimization protocol. Active pharmaceutical ingredient moclobemide was synthesized on a larger scale, achieving excellent yield and low Process Mass Intensity (PMI ...
Matthieu Lavayssiere +2 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.Molecular design reshapes the landscape of excited‐state relaxation. Nonadiabatic dynamics reveal how electronic structure guides population flow between competing pathways beyond static energetic arguments. ABSTRACT Nitrobenzochalcogenadiazole derivatives are emerging candidates for photodynamic therapy (PDT), yet the precise mechanisms governing ...
Vinícius N. da Rocha +2 more
wiley +1 more source