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Displaying 501 - 525 of 1910

Measurement of particle size distribution and specific surface area for crushed concrete aggregate fines

December 30, 2016
Author(s)
Edward J. Garboczi, Chiara F. Ferraris, Rolands Cepuritis, Stefan Jacobsen, Bjorn Sorensen
… (N2) adsorption BET. Measurements were performed on 30 crushed concrete aggregate powder materials (fines) … input parameters. LD can introduce an error of up to 30 % in the measured specific surface area due to input … spherical particle shape is of similar magnitude (20 % to 30 %) over the entire investigated particle size range, …

High-Temperature Electroacoustic Characterization of Y-Cut and Singly-Rotated Ca3TaGa3Si2O14 Resonators

July 26, 2014
Author(s)
Ward L. Johnson, Michal Schulz, Holger Fritze
… of CTGS bulk acoustic resonators with Y-cut and (YXl) −30° crystal orientations and fundamental frequencies near 5 … at temperatures between ambient and 1100 °C. (YXl) −30° resonators are found to have turnover temperatures near … fractional changes in fifth-overtone frequency of (YXl) −30° CTGS is 40e−6/K (near 1100 °C), and this value is not …

Effect of Self-Assembled Monolayer Film Order on Nanofriction

July 6, 2006
Author(s)
S Sambasivan, S Hsieh, Daniel A. Fischer, Stephen M. Hsu
Friction at the nanoscale has become a significant challenge for microsystems, including MEMS, NEMS and other devices. At nanoscale, lateral loading often causes component breakage and loss of functions in devices, therefore, accurate measurement and

Moment Method for Obtaining Particle Size Measures of Test Smokes

February 19, 2017
Author(s)
Thomas Cleary, D W. Weinert, George Mulholland
… mean diameter (d 10 ) and the diameter of average mass (d 30 ) with peak values ranging from 0.20 [mu]m to 0.75 [mu]m for d 10 and 0.25 [mu]m to 1.0 [mu]m for d 30 for the smolder/pyrolysis smokes generated. Assuming a …

The Synthesis and Characterization of 1111 Type Diluted Ferromagnetic Semiconductor (La 1-x Ca x )(Zn 1-x Mn x )AsO

December 17, 2015
Author(s)
Cui Ding, Shengli Guo, Yao Zhao, Huiyuan Man, Licheng Fu, Yilun Gu, Zhouyang Wang, L. Liu, B. A. Frandsen, S. Cheung, Y. J. Uemura, T. Goko, H. Luetkens, E. Morenzoni, Yang Zhao, F.L. Ning
… occurs below the Curie temperature TC approximately} 30 K. Taking advantage of the decoupled charge and spin … fixed Mn concentration of 10 %, T C increases from 24 K to 30 K with Ca concentration increases from 5 % to 10 %. …

Phase Diagram of the Relaxor Ferroelectric (1-x)Pb(Mg 1/3 Nb 2/3 )O 3-x PbTiO 3 Revisted: A neutron Powder Diffraction Study of the Relaxor Skin Effect

January 19, 2015
Author(s)
Daniel Phelan, Efrain E. Rodriguez, J Gao, Y Bing, Z.-G. Ye, Qingzhen Huang, Jinsheng Wen, Guangyong Xu, C. Stock, M Matsuura, Peter M. Gehring
… were prepared with nominal compositions of x=0.10, 0.20, 0.30, and 0.40 and divided into two identical sets, one of … Further, the diffraction patterns for x=0.10, 0.20, and 0.30 are best refined using the monoclinic Cm space group. By …

Ab Initio Calculation of the KRb Dipole Moments

August 1, 2003
Author(s)
Svetlana A. Kotochigova, Paul S. Julienne, Eite Tiesinga
… state X1Sigma+ and a3Sigma+ potentials are found to be 0.30(2) ea0 and 0.00046(0.028) ea0 at their equilibrium … separation, respectively. Here, 1 ea0=8.47835 10**{30} Cm and one standard-deviation uncertainties are given in …

NIST Special Publication 376, Metric Ruler

August 8, 2024
Author(s)
Elizabeth Benham, Kristen Dill
… The design includes approximate scales of 300 mm and 30 cm. One edge is graduated in centimeters by alternating …
Displaying 501 - 525 of 1910
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