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Displaying 17501 - 17525 of 73970

The Optics and Alignment of the Divergent Beam Laboratory X-ray Powder Diffractometer and its Calibration with NIST Standard Reference Materials

September 25, 2015
Author(s)
James P. Cline, Marcus H. Mendenhall, David R. Black, Donald A. Windover, Albert Henins
The laboratory X-ray powder diffractometer is one of the primary analytical tools in materials science. It is applicable to nearly any crystalline material, and with advanced data analysis methods, it can provide a wealth of information concerning sample

An algorithm for compensation of short-period errors in optical encoders

September 24, 2015
Author(s)
Marcus H. Mendenhall, Donald A. Windover, Albert Henins, James P. Cline
We present a simple way to collect data from an optical position or angle encoder with a readout which interpolates values between the optical features, and to process this data set so as to determine the short-range errors which arise from an

Some dual definite integrals for Bessel functions

September 24, 2015
Author(s)
Howard S. Cohl, Rebekah M. Palmer, Sean Nair
Based on known definite integrals of Bessel functions of the first kind, we obtain exact solutions to unknown definite integrals using the method of integral transforms from Hankel's transform.

Benchmarks for genome sequencing

September 23, 2015
Author(s)
Justin M. Zook, Marc L. Salit
In this issue, Griffith et al. present one of the most comprehensive genome-sequence data sets to date from a patient with myeloid leukemia, including sequencing of normal tissue, primary cancer, and a relapse. Their raw data from a variety of sequencing

Infiltration and Ventilation in a Very Tight Home

September 23, 2015
Author(s)
Lisa C. Ng, Andrew K. Persily, Steven J. Emmerich
The Net Zero Energy Residential Test Facility (NZERTF) was constructed at the National Institute of Standards and Technology (NIST) to support the development and adoption of cost-effective net zero energy designs and technologies. Key design objectives

Sequence-based Analysis of Stutter at STR Loci: Characterization and Utility

September 23, 2015
Author(s)
Rachel A. Aponte, Katherine Gettings, David L. Duewer, Michael D. Coble, Peter Vallone
The development of next generation sequencing (NGS) technologies creates the potential for changing the method by which the forensic science community genotypes short tandem repeat (STR) loci. While the capabilities of NGS are promising, moving from

Comparison of Pinhole Collimation and Focusing Optics for SANS

September 21, 2015
Author(s)
Charles J. Glinka, John G. Barker, David F. Mildner
We examine quantitatively the instrumental factors that affect the theoretical performance and practical application of conventional pinhole collimation and focusing optics for Small-Angle Neutron Scattering (SANS) measurements. We calculate the relative
Displaying 17501 - 17525 of 73970
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