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Topic Area: Chemical Engineering
Processing

Displaying records 21 to 30 of 109 records.
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21. Feasibility of an Accurate Dynamic Standard for Water Flow
Topic: Chemical Engineering & Processing
Published: 6/1/2010
Authors: Iosif I Shinder, Michael R Moldover
Abstract: We used NIST's primary water flow standard to study the feasibility of accurately determining mass flow rates {I}m{/I}^ddot^ of water "dynamically," that is from the time derivative of the weight {I}W{/I} of the collection tank: {I}m{/I ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832344

22. Computational Analysis of Dynamic SPK(S8)-JP8 Fueled Combustor-Sector Performance
Topic: Chemical Engineering & Processing
Published: 4/9/2010
Authors: R. Ryder, Robert C Hendricks, Marcia L Huber, D. T. Shouse
Abstract: Civil and military flight tests using blends of synthetic and biomass fueling with jet fuel up to 50:50 are currently considered as drop in fuels. They are fully compatible with aircraft performance, emissions and fueling systems, yet the design and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904683

23. Thermodynamics of the hydrolysis reactions of 1-naphthyl acetate, 4-nitrophenyl acetate, and 4-nitrophenyl -L-arabinofuranoside
Topic: Chemical Engineering & Processing
Published: 4/2/2010
Authors: Stephen R. Decker, Robert Nathan Goldberg, Brian E Lang, William Michener
Abstract: Microcalorimetry, high-performance liquid chromatography (HPLC), and liquid chromatography-mass spectrometry (LC-MS) have been used to conduct a thermodynamic investigation of the hydrolysis reactions: {1-naphthyl acetate(aq) + H2O(l) = 1 naphthol(a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904030

24. Relating Complex Fluid Composition and Thermophysical Properties with the Advanced Distillation Curve Approach
Topic: Chemical Engineering & Processing
Published: 3/17/2010
Authors: Thomas J Bruno, Lisa S. Ott, Tara M Lovestead, Marcia L Huber
Abstract: Complex fluids have long posed a significant challenge in our ability to characterize and model fluid properties. Here, we consider complex fluids to be mixtures with many components that can differ significantly in polarity and polarizability. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903208

25. Density and Speed of Sound Measurements of Hexadecane
Topic: Chemical Engineering & Processing
Published: 1/7/2010
Authors: Stephanie L Outcalt, Arno R Laesecke, Tara J Fortin
Abstract: The density and speed of sound of hexadecane have been measured using two instruments. Both instruments use the vibrating-tube method for measuring density. Ambient pressure (83 kPa) density and speed of sound measurements were carried out with a r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902259

26. Optimizing Acoustic Measurements of the Boltzmann Constant
Topic: Chemical Engineering & Processing
Published: 11/22/2009
Author: Michael R Moldover
Abstract: We review the progress in acoustic metrology of gases that has occurred since the 1988 measurement of the universal gas constant {I}R{/I} using a spherical acoustic resonator. The advances in understanding resonators and in calculating the thermophys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902117

27. Perturbations from Ducts on the Modes of Acoustic Thermometers
Series: Journal of Research (NIST JRES)
Topic: Chemical Engineering & Processing
Published: 9/1/2009
Authors: Keith A Gillis, Michael R Moldover, Hong Lin
Abstract: We examine the perturbations of the modes of an acoustic thermometer caused by circular ducts used either for gas flow or as acoustic waveguides coupled to remote transducers. We calculate the acoustic admittance of circular ducts using a model based ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902237

28. Reference measurements of Hydrogen's Dielectric Permittivity
Topic: Chemical Engineering & Processing
Published: 8/10/2009
Authors: James W Schmidt, Michael R Moldover, Eric F. May
Abstract: We used a quasi-spherical cavity resonator to measure the relative dielectric permittivity {epsilon}^dr^ of H^d2^ at frequencies from 2.4 GHz to 7.3 GHz, at pressures up to 6.5 MPa, and at the temperatures 273 K and 293 K. The resonator was calibrat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901652

29. High Definition Flow
Topic: Chemical Engineering & Processing
Published: 8/1/2009
Authors: John D Wright, Michael R Moldover
Abstract: From pharmaceutical production to the natural gas market, exact flow measurements are critical. Here's how NIST helps keep us all on the same page.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832391

30. The Internal Fluid Mechanics of Explosive Trace Detectors using Computational Fluid Dynamics
Series: OTHER
Topic: Chemical Engineering & Processing
Published: 5/1/2009
Authors: Matthew E Staymates, Wayne Smith, John G Gillen
Abstract: Efforts are underway in the Surface and Microanalysis Science Division at the National Institute of Standards and Technology to study the vapor transport mechanisms inside explosive trace detection instruments (ETD s) and produce standard test materi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901483



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