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Displaying 26 - 50 of 1414

Isotopic ( 14 C) and Chemical Composition of Atmospheric Volatile Organic Compounds-Precursors to Ozone

September 1, 2000
Author(s)
George A. Klouda, C. W. Lewis, R A. Rasmussen, D C. Stiles, W D. Ellenson, J L. Marolf, R. K. Stevens
… are uniquely discriminated from each other based on the 14 C abundance of VOC fractions. Combining isotopic … from atmospheric non-methane VOC fractions to measure the 14 C composition [4,9]. In doing so, this work also provided … describe the methods studied and present preliminary 14 C and chemical results from Azusa, CA, Houston, TX, and …

Chapter 14. Nanoscale electromagnetic measurements for life science applications

September 17, 2017
Author(s)
Thomas M. Wallis, Pavel Kabos
… of 1906 Nobel Prize winner Santiago Ramon y Cajal. Fig. 14.1 shows the dimensions of relevant biological specimens. … microscopy techniques are available. For comparison, Fig. 14.1 also illustrates comparable solid state, electronic … Chapter 14. Nanoscale electromagnetic measurements for life science …

A Failure Analysis of an Experimental AIMgB14 Cutting Tools

January 1, 2005
Author(s)
J L. Evans, Laurent Deshayes, D G. Bhat, S A. Batzer
A recently developed ultra-hard boride-based material, AlMgB14, has been fabricated into a standard cutting tool geometry (TPG-222) and tested in the single-point turning of Ti-6Al-4V. The initial testing was conducted to compare this new cutting tool?s

Space-Dependent Dynamics in 1,4-Polybutadiene Nanocomposite

August 16, 2013
Author(s)
J.H. Roh, Madhu Sudan Tyagi, T. E. Hogan, C. M. Roland
… Neutron backscattering measurements were carried out on 1,4-polybutadiene, neat and bound to carbon nanoparticles. At … Space-Dependent Dynamics in 1,4-Polybutadiene Nanocomposite …

Phase Equilibria of the SrO-Yb 2 O 3 -CuO x System in Air

September 1, 2001
Author(s)
J Dillingham, Winnie Wong-Ng, Igor Levin
… x system was investigated in air. The solid solution (Sr 14-x Yb x )Cu 24 O z (O … equilibria, SrO-Yb 2 O 3 -CuO x , TEM study of (Sr, Yb) 14 Cu 24 O 41 , x-ray diffraction …

Characterization of the trimethyl silyl derivatives of 6-Amino-3-methyl-1,4-diphenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile and its analogs by electron ionization gas chromatography/mass spectrometry

June 27, 2025
Author(s)
Quan-Long Pu, Yufang Zheng, Edward P. Erisman
… trimethylsilyl (TMS) derivatives of 6-amino-3-methyl-1,4-diphenyl-1,4-dihydropyrano[2,3 c]pyrazole-5-carbonitrile and analogs … of the trimethyl silyl derivatives of 6-Amino-3-methyl-1,4-diphenyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile and its …

A Critical Evaluation of Interlaboratory Data on Total, Elemental, and Isotopic Carbon in the Carbonaceous Particle Reference Material, NIST SRM 1649a

June 1, 2002
Author(s)
Lloyd A. Currie, Bruce A. Benner Jr, H A. Cachier, R Cary, J C. Chow, David L. Urban, T. I. Eglinton, O Gustafsson, P C. Hartmann, J I. Hedges, J D. Kessler, T Kirchstetter, D Klinedinst, George A. Klouda, J V. Marolf, C A. Masiello, T Novakov, A. Pearson, K M. Prentice, H Puxbaum, J G. Quinn, C. M. Reddy, H Schmid, J F. Slater, Stephen A. Wise, J Watson
… 11 institutions. Key results of the intercomparison are: (1) a new, Certified Value for total carbon (TC) in SRM 1649a; …

Comparison of Fire Model Predictions With Experiments Conducted in a Hangar With a Ceiling Height of 14.9 m.

October 28, 1996
Author(s)
William D. Davis, Kathy A. Notarianni, Kevin B. McGrattan
… conducted in an aircraft hangar with a ceiling height of 14.9 m (49 ft.). The fire experiments were conducted at … fire models with experimental data at heights above 14 m include Walton, Duong and Notarianni and Davis. Model … Experiments Conducted in a Hangar With a Ceiling Height of 14.9 m. …

A Comparison of MAC Protocols for Hybrid Fiber/Coax Networks: IEEE 802.14 vs. MCNS

June 7, 1999
Author(s)
Nada T. Golmie, F Mouveaux, David H. Su
… In parallel to the MCNS activities, the Project P802.14, Cable-TV Protocol Working Group of the IEEE LAN/MAN … groups have little in common at the MAC layer. IEEE 802.14 chose ATM transfer as its default solution while MCNS uses … a comparative performance evaluation of both IEEE 802.14 and MCNS MAC specifications. We focus on the efficiency of …

Dual-Comb Spectroscopy of Carbon Dioxide and Methane Across a 14.5 km Long Outdoor Path

September 1, 2023
Author(s)
Fabrizio Giorgetta, Esther Baumann, Brian Washburn, Nathan Malarich, Jean-Daniel Deschenes, Ian Coddington, Nathan Newbury, Kevin Cossel
… dual-comb spectroscopy is extended to a city-scale 14.5-km path length using remote receiver and data … Spectroscopy of Carbon Dioxide and Methane Across a 14.5 km Long Outdoor Path …

Passively Mode-locked Glass Waveguide Laser with 14 fs Timing Jitter

December 1, 2003
Author(s)
John B. Schlager, Berton Callicoatt, Richard Mirin, Norman Sanford, David J. Jones, Jun Ye
… an ultra-low, root-mean-square relative timing jitter of 14.4 fs integrated from 10 Hz to the Nyquist frequency of 375 … Passively Mode-locked Glass Waveguide Laser with 14 fs Timing Jitter …

The Remarkable Metrological History of Radiocarbon Dating [II]

August 1, 2004
Author(s)
Lloyd A. Currie
… Radiocarbon dating would not have been possible if 14 C had not had the wrong half-life -- a fact that delayed its discovery [1]. Following the discovery of this 5730 year radionuclide in … by Ruben and Kamen, it became clear to W.F. Libby that 14 C should exist in nature, and that it could serve as a …
Displaying 26 - 50 of 1414
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