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Displaying 28976 - 29000 of 74083

MCMC in StRD

October 16, 2008
Author(s)
Hung-Kung Liu, William F. Guthrie, D Malec, Grace L. Yang
The numerical inaccuracies caused by floating point arithmetic, although often not important, can change the conclusions of an analysis. Computational accuracy is of increasing concern because the number of software packages has exploded as computers have

Measurement of Slippage Induced by a Polymer Processing Additive

October 16, 2008
Author(s)
Kalman Migler, C L. Gettinger, V P. Thlacker, R Conway
Flow profiles of a linear density polyethylene (LLDPE) were measured in an optical slit die situated at the exit of a twin screw extruder. The velocities of tracer particles were measured as a function of position across the slit die at various flow rates

Measurement Performance of High-Accuracy Low-Pressure Transducers

October 16, 2008
Author(s)
A P. Miiller
A systematic study of measurement performance is described for several different types of transducers including capacitance diaphragm gauges (CDGs), quartz Bourdon gauges (QBGs), quartz resonant gauges (QRGs), and two types of MEMS (MicroElectroMechanical

Measurement Reliability in the Early States of Biomarker Development

October 16, 2008
Author(s)
Walter S. Liggett Jr, Peter E. Barker, J Semmes
Analytical instruments with functional responses such as SELDI-TOF mass spectra offer a basis for biomarker development. This paper describes an approach to improving measurement reliability, that is, to improving the consistency of the instrument response

Measures of Hassler at NIST

October 16, 2008
Author(s)
L A. Greenhouse
The descendants of Ferdinand Rudolph Hassler have loaned a collection of the first Coast Survey Superintendent's personal instruments to the National Institute of Standards and Technology (NIST). The instruments are displayed in the lobby to NIST's Red

Measuring Hydrogen Deuterium Exchange in Protein Monolayers

October 16, 2008
Author(s)
Jack R. Smith, Marcus T. Cicerone, Curtis Meuse
A non-destructive infrared (IR) spectroscopy assay to measure hydrogen-deuterium exchange (HDX) in surface-adsorbed protein monolayers has been developed. The procedure can be used to measure HDX for different proteins on a variety of materials applied to

Melting Equilibria of the BaF 2 -CuO x System

October 16, 2008
Author(s)
Winnie Wong-Ng, Lawrence P. Cook, J Suh
Since the BaF 2-CuO x system is a limiting binary of the overall quaternary reciprocal Ba,Y,Cu//F,O phase diagram, it provides an important frame of reference for studying the more complicated multi-component system. The phase diagrams of the BaF 2-CuO x

Metastability and Depletion Driven Aggregation

October 16, 2008
Author(s)
Erik K. Hobbie
Depletion driven aggregation in binary colloidal mixtures is studied via the time evolution of the cluster-size distribution and structure factor as the mixtures equilibrate after shear melting. The data suggest a two-stage crystallization process with an

Metrology for Cancer Biomarkers: Affinity Analysis of Human HER2 and Telomerase With IgYs

October 16, 2008
Author(s)
Yan Xiao, G Gannot, M Emmert-Buck, S Srivastava, Paul D. Wagner, Peter E. Barker
To improve quantitation of HER2 and telomerase as cancer biomarkers, we have generated novel avian polyclonal antibodies of IgY isotype for comparison with commercially available mammalian antibodies in cell culture models. IgYs were generated against

Metrology for Remote Sensing Radiometry

October 16, 2008
Author(s)
B. Carol Johnson, Steven W. Brown, Joseph P. Rice
Metrology, the science of measurement, is discussed in terms of measurements of radiant flux and associated quantities. Radiometric measurements are naturally remote, that is, they are non-contact. A broad application is Earth science, as global

Metrology in Support of Trace Explosive Detection Equipment for Airport Security Applications.

October 16, 2008
Author(s)
George A. Klouda, J Greg Gillen, Robert A. Fletcher, E S. Etz, Jennifer R. Verkouteren, R. Michael Verkouteren, E Ferguson
We are working in collaboration with the Transportation Security Agency's Trace Explosive Detection Group to build a chemical metrology program to help support the widespread operational deployment and effective utilization of trace explosives detection

Metrology of Localized Inhomogeneity in Optical Glass

October 16, 2008
Author(s)
Angela Davies
The optical glass industry does not have a standard method of quantiatively evaluating localized inhomogeneities (striae). We are developing an interferometric method and find that the measured wavefront distortion depends on sample position and focus.
Displaying 28976 - 29000 of 74083