Results 291 to 300 of about 2,901,641 (329)

Compositional Integrated Subsurface-Surface Modeling

All Days, 2000
Abstract Adequate modeling of a hydrocarbon production system may require integration of several reservoir models with a model for the surface network and a model for the processing facilities. The degree of detail in each model should be in accordance with its impact on the business case.
A.J. Weisenborn, A.M. Schulte
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Surface Roughness of Microfilled Composites

The Journal of the American Dental Association, 1981
Average surface roughness values, profile tracings, and surface microstructures of three microfilled composites and a conventional composite were studied with respect to final finishing procedures. Surfaces cured against Mylar matrix strips were the smoothest and were similar for all composites.
J B, Dennison, P L, Fan, J M, Powers
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Atmospheric Composition and Surface Exchanges

2004
Atmospheric chemistry is a relatively new scientific discipline. Research in this area has intensified dramatically in the last 3–4 decades because of the concerns that growing emissions of pollutants could have severe consequences for humankind. Although the major chemical compounds present in the atmosphere were identified long ago, it is only during
Brasseur, G., Steffen, W., Granier, C.
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The Martian Surface Composition

Space Science Reviews, 2001
Mars is unique to have undergone all planetary evolutionary steps, without global resets, till its geological death: this is reflected in the variety of its surface features. The determination of Mars surface composition has thus the potential to identify the processes responsible for the entire Mars evolution, from geological timescales to seasonal ...
Jean-Pierre Bibring, Stéphane Erard
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Surface composition of polystyrene

Journal of Applied Polymer Science, 1988
AbstractThe physical and chemical properties of bulk polymers are well understood and have been measured exhaustively for numerous systems, but the properties of polymer surfaces are quite often different from those observed in the bulk and are usually not as easily measurable. Since many polymer properties vary with molecular weight, it is of interest
Ronald D. Goldblatt, Gerald J. Scilla, Jae M. Park, Julian F. Johnson, Samuel J. Huang   +4 more
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Titan's surface composition

In some respects, the surface of Titan is one of the most Earth-like places in the solar system. However, two properties distinguish the surface of Titan from that of Earth: temperature and chemistry. Titan's mean surface temperature is −180°C (∼90 K), and water-ice plays the role that igneous and other types of silicate rocks play in the Earth's crust.
Solomonidou, Anezina, Le Gall, Alice, Hayne, Paul, Coustenis, Athena   +3 more
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Surface Composition of Wustite

Berichte der Bunsengesellschaft für physikalische Chemie, 1980
AbstractUsing 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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Composite Failure Surface Analysis

Journal of Composite Materials, 1980
In this work, the features of the fracture surfaces of graphite-epoxy specimens as seen by both optical and scann ing electronic microscope (SEM) are presented. A variety of test conditions were investigated. They are: tension (quasi- static), compression (quasi-static), and tension-tension fatigue. Failure due to delamination was also studied (Mode I-
R.A. Kline, F.H. Chang
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Surface composition of Pluto

Icarus, 1979
Broadband (J, H, K and L) and narrowband (1.5- to 3.7-micron) infrared photometry of Pluto has been conducted in order to check previous ambiguous observations of methane frost on the planet's surface. In detail, the match between a laboratory spectrum of methane frost and the observed spectrum of Pluto is not good.
L.A. Lebofsky, G.H. Rieke, M.J. Lebofsky
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Surface Compositional Semantics

1989
The 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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