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You searched on: Author: thomas larason Sorted by: title

Displaying records 1 to 10 of 45 records.
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1. Absolute Radiometric Calibration of Digital Imaging Systems, ed. by M.M. Blouke, J. Canosa, N. Sampat
Published: 1/1/2001
Authors: Steven W Brown, Thomas C Larason, C Habauzit, George P Eppeldauer, Yoshihiro Ohno, Keith R. Lykke

2. Action spectra for validation of pathogen disinfection in medium-pressure ultraviolet (UV) systems
Published: 12/12/2014
Authors: Sara E. Beck, Harold B Wright, Thomas M Hargy, Thomas C Larason, Karl G. Linden
Abstract: Ultraviolet (UV) reactors used for disinfecting water and wastewater must be validated and monitored over time. The validation process requires understanding the photochemical properties of the pathogens of concern and the challenge microorganisms ...

3. Avoiding Errors in UV Radiation Measurements
Published: 1/1/2001
Author: Thomas C Larason

4. Building a Quality System Based on ANSI/NCSL Z540-1-1994 -- An Effort by the Radiometric Physics Division at NIST,
Published: 1/1/1995
Authors: S S Bruce, Thomas C Larason

5. Calibration and Characterization of UV Sensors for Water Disinfection
Published: 1/2/2006
Authors: Thomas C Larason, Yoshihiro Ohno
Abstract: Ultraviolet radiation (UV) effectively inactivates common pathogens found in ground and surface waters such as Cryptosporidium, Giardia, and most bacterial pathogens (e. g., E. coli). Water treatment facilities recently started using ultraviolet rad ...

6. Calibration and Standardization Issues of UV Sensors for Water Disinfection
Published: 8/1/2005
Authors: Thomas C Larason, Yoshihiro Ohno
Abstract: Ultraviolet radiation (UV) effectively inactivates common pathogens found in ground and surface waters such as Cryptosporidium, Giardia and most bacterial pathogens. Water treatment facilities recently started using ultraviolet radiation for disinfec ...

7. Calibration procedure for UV-365 integrated irradiance measurements
Published: 9/8/2015
Authors: George P Eppeldauer, Thomas C Larason, Robert Edward Vest, Uwe Arp, Howard W Yoon
Abstract: Since the CIE standardized rectangular-shape spectral response function for the 320 nm to 400 nm wavelength range can be realized only with large spectral mismatch, the realized UV-A meters have different response functions resulting in large errors ...

8. Calibrations of Current-to-Voltage Transimpedance Amplifiers Using Electrical Standards
Published: 6/13/2010
Authors: Howard W Yoon, George P Eppeldauer, Dean G Jarrett, Thomas C Larason, Wan-Seop Kim
Abstract: For photocurrent measurements with low uncertainties, a wide-dynamic range current-to-voltage converter traceable to resistance standards has been developed at the NIST. The design and calibration of the converter standard are described. For validat ...

9. Characterization of UV Detectors at SURF III (invited)
Published: 3/1/2002
Authors: Ping-Shine Shaw, Thomas C Larason, R Gupta, Keith R. Lykke
Abstract: The Synchrotron Ultraviolet Radiation Facility (SURF III) at the National Institute of Standards and Technology provides a unique research opportunity in precision measurement with its continuous and calculable radiation stretching from the soft x-ra ...

10. Comparison of UV-Induced Inactivation and RNA Damage in MS2 Phage across the Germicidal UV Spectrum
Published: 3/11/2016
Authors: Sara E. Beck, Roberto A Rodriguez, Karl G. Linden, Thomas M Hargy, Thomas C Larason, Michael A. Hawkins
Abstract: Polychromatic UV irradiation is a common method of pathogen inactivation in the water treatment industry. To improve its disinfection efficacy, more information on the mechanisms of UV inactivation on microorganisms at wavelengths throughout the germ ...

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  • SP 250-XX: Calibration Services
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