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Richard L. Steiner, Edwin R. Williams, Ruimin Liu, Beatrice Parker
The NIST electronic kilogram has had three published results, each with slightly less uncertainty. In the present design, there are several measurement...
Calculating the force on a reference mass for the electronic kilogram experiment requires using both absolute and relative gravity meters to measure the...
Michael Brundage, William Z. Bernstein, KC Morris, John A. Horst
Key Performance Indicators (KPIs) are crucial for measuring and improving the performance of a manufacturing process. An especially critical aspect of...
Jonathan E. Hardis, Demetrios Matsakis, Blair Fonville
Due to the efforts of Henry Warren, inventor of the Telechron electric clock, electric power companies have been a source of time and frequency reference for...
The Citizen Broadband Radio Service (CBRS) band has three tiers of users. The General Authorized Access (GAA) has the lowest priority and operates without a...
Kevin Teichman, Steven Emmerich, Andrew K. Persily
Despite numerous efforts to encourage good indoor air quality (IAQ) in high-performing buildings, including several building rating programs, measured IAQ...
Azza Ben Mosbah, Timothy Hall, Michael R. Souryal, Hossam Afifi
In spectrum sharing, incumbents with sensitive parameters require full protection of their operations. The incumbent's protection includes the protection of its...
Thao T. Nguyen, Anirudha Sahoo, Michael R. Souryal, Timothy Hall
Spectrum sharing in the 3.5 GHz band between commercial and government users along U.S. coastal areas depends on an Environmental Sensing Capability (ESC), a...
Andree R. Charriere, Maria E. Nadal, Clarence Zarobila
The present work consists in developing a procedure which will allow to compare gloss values obtained from an angularly and spectrally resolved Bidirectional...
Gregory W. Hoth, John E. Kitching, Elizabeth A. Donley, Bruno M. Pelle
Light pulse atom interferometry can be used to realize high-performance sensors of accelerations and rotations. In order to broaden the range of applications of...
Joseph Woicik, Eric L. Shirley, Daniel A. Fischer, S Sambasivan, C R. Ashman, C S. Hellberg, H Li
Ferroelectric crystals possess an electric dipole moment even in the absence of an external electric field. In order for this spontaneous polarization to arise...
Dramatic improvements in our understanding of how biological systems work, diseases initiate, and illnesses progress have given rise to the expectation that...
V S. Nagarajan, S Jahanmir, B Hockey, Victoria Thompson
The effect of microstructure on the wear mechanisms of glass-ceramics and resin composites was studied. Wear tests on both types of materials were conducted...
Long-term service life of a load-bearing ceramic component such as a turbine blade atelevated temperatures is often controlled by the rates of nucleation and...
Low-speed friction experiments were conducted under boundary lubrication in a pin-on-disk tester. The 304 stainless steel disk had smooth areas alternating with...
Winnie Wong-Ng, Lawrence P. Cook, W Greenwood, Anthony J. Kearsley
Applications of (Bi,Pb)-Sr-Ca-Cu-O phase equilibria include material synthesis, melt processing and single crystal growth. Both liquidus and subsolidus data are...
The thermal conductivity of AIN specimens doped with Y2O3(5 wt.%) was determined using the photothermal deflection technique. The results agree within 10% of...
Lyle E. Levine, R Thomson, Gabrielle G. Long, David R. Black
Many types of defects contribute to local and long-range stresses and strains in materials. These include vacancies, voids, prismatic loops, interstitials...
We have uncovered the fact that colloidal probes often have random surface features which when not properly accounted for, can significantly affect the...
K Zhang, G Rosenbaum, R Liu, G Bunker, C Y. Liu, Daniel A. Fischer
The development of Multilayer Analyzer Array Detector (MADD) for X-ray fluorescence is to eliminate the count rate limitation encountered with the multi-element...
Accurate friction measurement at nanoscale is critical in reliable device design. Literature papers have reported different friction values for the same...
The hole mobility and carrier lifetime of [alpha] mercuric iodide high energy radiation detectors have been enhanced through crystal growth in microgravity. The...
This paper addresses issues of fracture for materials in which large grains, exist in a matrix of much smaller grains. Materials used for optical components...