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You searched on: Author: steven choquette Sorted by: title

Displaying records 1 to 10 of 26 records.
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1. A Rare-Earth-Oxide Glass for the Wavelength Calibration of Near-Infrared Dispersive and Fourier-Transform Spectrometers
Published: 4/1/2001
Authors: Steven J Choquette, John Carlton Travis, L. E. O'Neal, C. J. Zhu, David Lee Duewer

2. Automated Spectral Smoothing with Spatially Adaptive Penalized Least-Squares
Published: 6/1/2011
Authors: Aaron A Urbas, Steven J Choquette
Abstract: A variety of data smoothing techniques exist to address the issue of noise in spectroscopic data. The vast majority, however, require parameter specification by a knowledgeable user, which is typically accomplished by trial and error. In most situati ...

3. Certified Transmittance Density Uncertainties for Standard Reference Materials using a Transfer Spectrophotometer
Series: Technical Note (NIST TN)
Report Number: 1715
Published: 11/28/2011
Authors: John Carlton Travis, Melody V Smith, Steven J Choquette, Hung-Kung Liu
Abstract: Overall uncertainties are evaluated for the certification of transmittance density (absorbance referred to air) and regular spectral transmittance for solid neutral density filter Standard Reference Materials by means of a transfer spectrophotometer. ...

4. Challenges in Providing Standard Reference Materials for Chemical and Pharmaceutical Process Analysis
Published: 2/2/1999
Authors: John Carlton Travis, Gary W Kramer, Melody V Smith, Steven J Choquette

5. Characterizing the Uncertainty in Near-Infrared Spectroscopic Prediction of Mixed Oxygenate Concentrations in Gasoline: Sample-Specific Prediction Intervals
Published: 7/15/1998
Authors: K Faber, David Lee Duewer, Steven J Choquette, T L Green, S. N. Chesler

6. Chromium-Doped Luminescent Glasses for Raman Intensity Calibration with 785 nm Laser Excitation
Published: 9/1/2001
Authors: E S. Etz, Wilbur Scott Hurst, Steven J Choquette, Douglas H. Blackburn

7. Development and Certification of NIST Standard Reference Materials for Relative Raman Intensity Calibration
Published: 4/1/2005
Authors: E S. Etz, Steven J Choquette, Wilbur Scott Hurst
Abstract: In the practice of analytical Raman spectroscopy, it becomes increasingly important to employ a procedure for the correction of the relative intensity of Raman spectra. The determination of the intensity response function of a Raman instrument tradi ...

8. Identification and Quantitation of Oxygenates in Gasoline Ampules Using Fourier Transform Near-Infrared Spectroscopy and Fourier Transform Raman Spectroscopy
Published: 10/15/1996
Authors: Steven J Choquette, S. N. Chesler, David Lee Duewer, S. Wang, T C O'haver

9. Measurement of Microsphere Concentration Using a Flow Cytometer with Volumetric Sample Delivery
Series: Journal of Research (NIST JRES)
Report Number: 119.027
Published: 12/29/2014
Authors: Lili Wang, Steven J Choquette, Yu-Zhong Zhang
Abstract: Microsphere concentrations are needed to assign ERF units to microspheres used in quantitative flow cytometry. An Attune® acoustic focusing flow cytometer was evaluated for the measurement of the concentration of microspheres contained in a Tru ...

10. Measurement of Scattering Cross Section with a Spectrophotometer with an Integrating Sphere Detector
Series: Journal of Research (NIST JRES)
Report Number: 117.012
Published: 9/13/2012
Authors: Lili Wang, Steven J Choquette, Yu-Zhong Zhang, Victoria Karpiak, Adolfas Kastytis Gaigalas
Abstract: A commercial spectrometer with an integrating sphere (IS) detector was used to measure the scattering cross section of microspheres. Analysis of the measurement process showed that two measurements of the extinction, one with the cuvette placed i ...

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