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Oxygen history

Yarincik KM, Murray RW, Lyons TW, Peterson LC, Haug GH (2000) Oxygenation history of bottom waters in the Cariaco Basin, Venezuela, over the past 578,000 years Results from redox-sensitive metals (Mo, V, Mn, and Fe). Paleoceanogr 15 593-604... [Pg.454]

The older, traditional model of global oxygen history arguably starts off with a paper (Cloud 1968) that appeared at the time when Margulis was reviving endosymbiotic theory. Further developed and supported by much evidence... [Pg.5]

Activated carbons contain chemisorbed oxygen in varying amounts unless special cate is taken to eliminate it. Desired adsorption properties often depend upon the amount and type of chemisorbed oxygen species on the surface. Therefore, the adsorption properties of an activated carbon adsorbent depend on its prior temperature and oxygen-exposure history. In contrast, molecular sieve 2eohtes and other oxide adsorbents are not affected by oxidi2ing or reducing conditions. [Pg.277]

The commercial product is a powder containing a minimum of 96% Na202 and approximately 20% active oxygen. It is made commercially by oxidizing the molten metal with either oxygen or air enriched in oxygen. Early industrial history (1) and manufacturing details (3) are available. Sodium... [Pg.90]

A comprehensive history of ferrous scrap recycling ia the United States beginning ia 1646 has beea pubUshed (3). Some selected eveats of iaterest iaclude the first opea-hearth steel produced (1868) the first commercial direct-arc electric furnace steel produced ia the United States (1906) the first large iaduction furnace iastaHed ia the United States (1914) the first basic oxygen steel produced ia the United States (1954) the rise of continuous casters and scrap-based minimills (1965) the first thin-slab continuous caster at a minimill (1989) U.S. exports and imports of ferrous scrap at record highs (1990) and the end of production of open-hearth steel (1991). [Pg.552]

Effect of Thermal History. Many of the impurities present in commercial copper are in concentrations above the soHd solubihty at low (eg, 300°C) temperatures. Other impurities oxidize in oxygen-bearing copper to form stable oxides at lower temperatures. Hence, because the recrystallization kinetics are influenced primarily by solute atoms in the crystal lattice, the recrystallization temperature is extremely dependent on the thermal treatment prior to cold deformation. [Pg.211]

Case Histories Following are examples of fatal accidents resulting from lack of oxygen ... [Pg.2338]

H. T. Kohlbrand, Case History of a Deflagration Involving an Organic Solvent/Oxygen System Below its Flash Point, Paper presented at AlChE Loss Prevention Symposium, San Diego, Aug. 1990. [Pg.352]

J. W. Mellor, a Comprehensive Treatise on Inorganic and Theoretical Chemistry, Vot 1, pp. 344-51, Longmans, Green, 1922. History of the discovery of oxygen. [Pg.600]

Pratt, T. H., Electrostatic Ignition in Enriched Oxygen Atmospheres A Case History, Process Safety Prog., V. 12, No. 4, 1993, p. 203. [Pg.542]

The dissolved oxygen content of surface oceanic water is mainly determined by its biological history it always tends, by solution from the air, towards... [Pg.367]

The performance of graphite in seawater, where chlorine is the principal gas evolved, is considerably better than in fresh water where oxygen is produced. Graphite is immune to chlorine and has a long history in the chemical industry in this and similar applications . [Pg.184]

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See also in sourсe #XX -- [ Pg.600 , Pg.601 , Pg.604 ]

See also in sourсe #XX -- [ Pg.60 ]

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