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Industrie du nickel --- Nickel industry --- Nikkelindustrie --- Geografie --- Economische geografie --- Primaire Economie. --- AA / International- internationaal --- 338.751.25 --- Nikkel. --- Nikkel --- MATIERES PREMIERES --- NICKEL
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Bedekkingen van tin en nickellegering --- Etain-nickel --- Nickel-étain --- Nikkel-tin --- Revêtements d'alliage étain-nickel --- Tin-nikkel --- 669.65.5.8
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Building materials. Building technology --- Architecture --- architecture [discipline] --- building materials --- Cr (chroom) --- architectuur --- bouwmaterialen --- Ni (nikkel)
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Materials sciences --- Cu (koper) --- staal --- nikkellegeringen --- koperlegeringen --- Al (aluminium) --- constructies --- kunststoffen --- corrosie --- Ni (nikkel)
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Sciences appliquées --- Techniek --- Technique --- Toegepaste wetenschappen --- Nickel --- Nikkel --- 620.19 : 669.24
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Sciences appliquées --- Techniek --- Technique --- Toegepaste wetenschappen --- Aciers au nickel-chrome --- Nikkel-chroomslaal --- 620.19 : 669.144
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Bruce Yoder's thesis outlines his investigation of the dissociative chemisorption of methane (CH4) on a nickel single crystal. In this work Bruce uses a molecular beam and infrared laser techniques to prepare methane in excited rovibrational states. The excited methane molecules are aligned relative to the target nickel surface. Bruce describes the discovery and exploration of a previously unknown steric effect in the dissociation reaction between a vibrationally excited methane molecule and a nickel crystal. From these studies we see that methane molecules are up to twice as reactive when the vibration is aligned parallel rather than perpendicular to the surface. This discovery will help guide the development of detailed predictive models of methane chemisorption, which in turn may lead to better catalysts for the synthesis of several industrially relevant chemicals, including hydrogen fuel from natural gas.
Chemical thermodynamics --- Physicochemistry --- Chemistry --- Enzymology --- Biotechnology --- Computer. Automation --- katalyse --- methaan --- thermodynamica --- biochemie --- chemie --- informatica --- biotechnologie --- fysicochemie --- Ni (nikkel) --- enzymen
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In 2002, the Swedish Metal Information Task Force (MITF) engaged the Environmental Research Group (MFG) to update previous monographs on copper, zinc and major alloying metals (such as chromium, nickel and molybdenum) in society and in the environment. This book presents new results on metal fluxes from society to the environment, on metal speciation in water, soil and sediment, and its interpretation in terms of mobility, biological uptake and toxicity. The scientific fundamentals of new approaches, like the Acid Volatile Sulphide (AVS) concept to predict metal bioavailability in sediments, and the Biotic Ligand Model (BLM) to calculate the toxicity of metals to aquatic organisms, are critically evaluated, with a focus on copper, nickel, zinc, and, in part, chromium. Recent scientific advances now offer an improved understanding of the mechanisms and factors controlling the intricate behaviour of trace metals, their interactions, uptake and effect in natural systems. Traditional risk assessment methods usually built on quite crude toxicity tests done in unrealistic "laboratory waters", and did not consider natural conditions. In contrast, modern approaches now increasingly involve the full utilisation of site-specific factors, which are decisive for the formation of bioavailable and toxic metal forms. Audience This book provides excellent guidance to both scientists focusing on the assessment of the ecological risk of metals, and to authorities, decision makers in industry, educational staff and the interested public concerned with the occurrence and fate of trace metals.
Physicochemistry --- Geochemistry --- Environmental protection. Environmental technology --- Pedology --- geochemie --- Cr (chroom) --- bodemkunde --- bodembescherming --- milieuzorg --- milieubeheer --- fysicochemie --- milieuanalyse --- Ni (nikkel)
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Physicochemistry --- Geochemistry --- Environmental protection. Environmental technology --- Pedology --- geochemie --- Cr (chroom) --- bodemkunde --- bodembescherming --- milieuzorg --- milieubeheer --- fysicochemie --- milieuanalyse --- Ni (nikkel)