Results 41 to 50 of about 233,674 (199)
GLASSES CONTAINING IRON OXIDE, X
Journal of the Ceramic Association, Japan, 1936 It is the object of this paper to set out a brief summary of the past work on the series of glasses which have been prepared from the batch mixtures in which the increasing amount of lime has been replaced by ferric-oxide or by ferrous-oxalate respectively.As the results of the total analysis of the series of lithiumoxide glasses have already been ...
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Environmental oxidative aging of iron oxide nanoparticles [PDF]
Applied Physics Letters, 2018 The environmental aging of functional iron oxide nanomaterials, especially those used in biomedical applications, may have significant consequences for both their mechanism of action and their safety profile. However, to date, there has been no way to systematically measure this property, and the problem has been largely overlooked. We show here that a
Lara K. Bogart +2 more
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AgricultureThe interactions between iron oxides and organic carbon within the particulate organic matter (POM) and mineral-associated organic matter (MAOM) fractions in paddy soils remain insufficiently understood, yet they are likely crucial for unlocking the ...
Hang Guo +8 more
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CHIMIA, 1988 The solubility of iron in surface waters and atmospheric water is partially controlled by photochemical processes. The increase in the solubility of iron in natural aquatic systems occurs most efficiently through reductive dissolution of iron(III)(hydr ...
Barbara Sulzberger +2 more
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The Nature of Iron Oxide Distribution in Some Calcareous and Gypsiferous Soils
Tikrit Journal for Agricultural Sciences, 2022 The study area is located within two regions. The first site in Tikrit city (Tikrit University) represents gypsiferous soils and the second site represents calcareous soils in Erbil Governorate.
Abha Kamal, Abdullah Rashid
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Mineralogy of Zhijiang plinthitic red clay in Hangzhou city
浙江大学学报. 农业与生命科学版, 2000 The mineral compositions of red and white plinthites separated from Zhijiang plinthitic red clay near Hangzhou, Zhejiang province were analysed by means of XRD and XRF. The total Fe, Mn and P contents in red plinthite were much higher than those in white
ZHANG Ming-kui
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Mechanisms of Bacterial Extracellular Electron Exchange. [PDF]
, 2016 The biochemical mechanisms by which microbes interact with extracellular soluble metal ions and insoluble redox-active minerals have been the focus of intense research over the last three decades. The process presents two challenges to the microorganism;
Butt, Julea N. +5 more
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Separation of silicon-iron-copper-nickel concentrate by fluorammonium method into individual oxides [PDF]
, 2007 Processes of ammonium hydrodifluoride interaction with main components of copper-nickel concentrates - iron, copper, nickel oxides have been investigated. Thermodynamics of chemical reactions was calculated.
Dyachenko, Alexander Nikolaevich +1 more
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Low Temperature Oxidation of pure Iron : Growth kinetics and scale Morphologies [PDF]
, 2004 Isothermal oxidation of pure iron has been performed in air at atmospheric pressure between 260°C and 500°C. Growth kinetics are accurately analysed and scale morphologies are investigated by SEM and TEM observations. The calculation of the variations of
Bertrand, Nathalie +4 more
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Iron transformation mediates phosphate retention across a permafrost thaw gradient
Communications Earth & EnvironmentPhosphorus limits primary productivity in many (Sub-)Arctic ecosystems and may constrain biological carbon sequestration. Iron (III) oxides strongly bind phosphate in soils but can dissolve under flooded, reducing conditions induced by permafrost thaw ...
Maximilian Barczok +7 more
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