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Displaying 48676 - 48700 of 73969

Composition of Plaque and Saliva Following Use of an A-tricalcium Phosphate-Containing Chewing Gum and a Subsequent Sucrose Challenge

January 1, 2000
Author(s)
Gerald L. Vogel, Z Zhang, Clifton M. Carey, A K. Ly, Laurence C. Chow, H M. Proskin
Previous studies demonstrated that chewing of a 2.5% (mass fraction) α-tricalcium phosphate-fortified (a-TCP) experimental chewing gum released sufficient calcium and phosphate to eliminate any fall in the tooth mineral saturation of plaque fluid after a

Computation of Light Scattered Into Detector

January 1, 2000
Author(s)
Egon Marx
To compare the measured bidirectional reflectance distribution function (BRDF) of a rough surface to the results of a computation, we have to take into account the aperture of the detector and, more generally, the properties of the measuring instrument. We

Decoherence of Quantum Superpositions Through Coupling to Engineering Reservoirs

January 1, 2000
Author(s)
C J. Myatt, B E. King, Q A. Turchette, C A. Sackett, D Kielpinski, Wayne M. Itano, W M. Monroe, David J. Wineland
The theory of quantum mechanics applies to closed systems. In such ideal situations, a single atom can, for example, exist simultaneously in a superposition of two different spatial locations. In contrast, real systems always interact with their

Definitions of Terms and Modes Used at NIST for Value-Assignment of Reference Materials for Chemical Measurements

January 1, 2000
Author(s)
Willie E. May, Reenie M. Parris, C M. Beck, John D. Fassett, Robert R. Greenberg, Franklin R. Guenther, Gary W. Kramer, Stephen Wise, T E. Gills, Jennifer C. Colbert, R J. Gettings, Bruce S. MacDonald
Standard Reference Materials (SRMs) are certified reference materials (CRMs) issued by NIST that are well-characterized using state-of-the-art measurement methods and/or techniques for the determination of chemical compositon and physical properties. SRMs
Displaying 48676 - 48700 of 73969
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