Results 211 to 220 of about 85,623 (262)

Mineral Fast Ion Conductors and Mineral Solid Electrolyte Batteries

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Prediction of the Weathering Properties of Minerals Based on the Ion-Ion Interaction Potential

MRS Proceedings, 2004
AbstractSelection of solid matrix for immobilization of nuclear waste and of geological sites for its disposal represents a complex and consuming task. Previously, we demonstrated that the ion-ion interaction potential (IIIP), representing the main term of the cohesive energy, can be used for estimation of stability of solid matrix/impurity systems ...
Raičević, Slavica, Wright, JV, Vujic, J, Conca, JL   +3 more
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Modeling the Interactions between Humics, Ions, and Mineral Surfaces

Environmental Science & Technology, 2006
Model VI and the NICA-Donnan model are two successful models presently available for describing metal ion binding by humic materials. Both models deal with the complexity of the underlying processes (intrinsic heterogeneity, partial correlation between affinity distributions, variable stoichiometry, electrostatics) in a pragmatic way. The parameters of
van Riemsdijk, Willem, Koopal, Luuk, Kinniburgh, David, Benedetti, Marc, Weng, Liping   +4 more
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Infrared Spectra of Hydronium Ion in Micaceous Minerals

Science, 1963
X-ray diffraction measurements of the d (001) spacing and the infrared absorption spectra of hydrogen-saturated micas show that an ion of approximately the same size and properties as hydronium is present and gives a unique absorption band at about 3470 cm -1 .
J L, White, A F, Burns
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Suppression of molecular ions in the secondary ion mass spectra of minerals

Surface and Interface Analysis, 1983
Abstract A new approach to the suppression of molecular ions in secondary ion mass spectra of insulating specimens is reported. Using a Cameca IMS 3f instrument, with unconventional primary beam conditions and uncoated samples, it has been possible to almost eliminate the contribution of molecular ions to the mass spectrum.
J. B. Metson, G. M. Bancroft, N. S. McIntyre, W. J. Chauvin   +3 more
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Vitamin D and Mineral Ion Regulation

Mineral ion regulation and vitamin D activation are closely interconnected processes that are vital for maintaining overall health, particularly in terms of bone metabolism and calcium (Ca+2) homeostasis. Mineral formation pathways involve the uptake of ions from the environment, the transport of ions by cells, sometimes temporary storage, and ...
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Molecular Ion Suppression in the Secondary Ion Mass Spectra of Minerals

1984
The application of SIMS as a practical analytical tool has been severely restricted by molecular ion interferences in the spectrum. The principle advantages of SIMS, specifically high sensitivity for a wide range of elements, low inherent backgrounds and large dynamic range, are often lost in a sea of molecular species.
J. B. Metson, G. M. Bancroft, N. S. Mclntyre, W. J. Chauvin   +3 more
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On the nature and distribution of mineral-forming ions: A mineral informatics approach

Mineralogical Magazine
Abstract Minerals incorporate 72 different essential elements, many of which are redox sensitive. We compiled oxidation states of ions in 4834 IMA-approved mineral species with oxygen and/or halogens as anions and have identified 87 essential mineral-forming ions.
Marko Bermanec, Jiyin Zhang, Robert T. Downs, Dominik Kunić, Xiaogang Ma, Shaunna M. Morrison, Anirudh Prabhu, Robert M. Hazen   +7 more
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Effect of Trimetaphosphate Ions on the Process of Mineralization

Journal of Dental Research, 1971
The effect of trimetaphosphate on mineral deposition was studied. Small concentrations of trimetaphosphate in a calcifying solution slowed the rate of calcium and phosphate deposition onto etched enamel and caused the formation of a solid phase, the chemical composition of which approximated that of hydroxyapatite and fluorapatite. The mechanism of the
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Comparative isosteric ion adsorption for minerals

Journal of Colloid and Interface Science, 1986
A comparative isosteric ion adsorption study for minerals (kaolinite, rutile, and quartz) was performed in aqueous solutions of CaCl2, LaCl3, and Th(NO3)4 in the presence of the neutral salt NaCl. It was observed that the concentration of Ca(2+) ions required to produce a standard reduction in the electrophoretic mobility of mineral particles was ...
Samuel N Omenyi, Blair J Herren, Robert S Snyder, V.F Seaman Geoffrey   +3 more
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