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The Surface Composition of Ceres
Space Science Reviews, 2010Our understanding of the composition of Ceres is driven by remote sensing of its surface. We review spectral observations of Ceres over wavelengths from the ultraviolet to the radio, as well as non-spectral data such as thermal inertia, photometric properties, radar experiments, and surface variability.
Andrew S. Rivkin +7 more
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Surface Composition of Wustite
Berichte der Bunsengesellschaft für physikalische Chemie, 1980AbstractUsing a solid electrolyte cell inside an UHV‐system the surface composition of oxides and metals can be studied at high temperatures 700 to 1000°C and well defined oxygen activities in the range po2 = 10−10 to 10−25 bar. AES‐measurements on wustite have shown that at temperatures > 800°C the composition of the surface shows the same change ...
H. J. Grabke, H. Viefhaus
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On the surface composition of Io
Icarus, 1974The wavelength dependence of the reflectivity of Io indicates the presence of two materials on the surface of this satellite of Jupiter. These materials are sulfur and an unspecified material (R1) which shows a wavelength dependence of its reflectivity for wavelengths from 0.3 to 1.0 micron similar to the non-H2O frost spectrum of the rings of Saturn.
Willem Wamsteker +2 more
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Composites with Hydrophobic Surfaces
Fibre Chemistry, 2015Methods for depositing fluoropolymer coatings onto the surfaces of carbon-fiber materials were examined. The water repellants were fluoroplastics F-2M and F-4D, use of which could more than double the hydrophobicity of the fibrous materials. It was shown that the fluoroplastic coatings had high chemical resistance.
O. I. Gladunova +3 more
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The composition of the Martian surface
Icarus, 1964Abstract It is generally believed that the desert areas of Mars are composed of limonite. This model of the surface, while based upon polarimetric, spectrometric, color, and albedo measurements, contradicts a reasonable geologic model. An examination of the evidence for limonite on Mars shows that the above measurements are ambiguous.
Roger A. Van Tassel, John W. Salisbury
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Composition of Titan's Surface
2009The Huygens Probe returned the first in situ data on Titan's surface composition in January 2005. Although Huygens landed on a dry plain, the Gas Chromatograph Mass Spectrometer (GCMS) showed evidence of methane moisture in the near subsurface suggesting methane precipitation at some time in the past.
L. A. Soderblom +7 more
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Applied Surface Science, 1984
Abstract In equilibrium, the composition of the surface of an alloy will, in general, differ from that of the bulk. The broken-bond model is applicable to alloys with atoms of virtually equal size. If the heat of alloy formation is zero, the component of lower heat of atomization is found enriched in the surface.
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Abstract In equilibrium, the composition of the surface of an alloy will, in general, differ from that of the bulk. The broken-bond model is applicable to alloys with atoms of virtually equal size. If the heat of alloy formation is zero, the component of lower heat of atomization is found enriched in the surface.
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1994
Abstract The first questions to be asked about a surface are: what atoms are present and what are their concentrations? If techniques can be found to provide the answers to these questions, then the next, more detailed, question is: how are the atoms bound to each other? These are the questions of surface chemistry.
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Abstract The first questions to be asked about a surface are: what atoms are present and what are their concentrations? If techniques can be found to provide the answers to these questions, then the next, more detailed, question is: how are the atoms bound to each other? These are the questions of surface chemistry.
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Surface Compositional Semantics
1989The distinction between the literal meaning of expressions and the speaker meaning of utterances (see Chapter 11) is the communication-theoretic precondition for a surface-compositional syntax and semantics.1 Adoption of the surface compositional approach to the syntax and semantics of natural language has two kinds of empirical consequences: (i) the ...
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