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Displaying 176 - 199 of 199

A proposed global atmospheric monitoring networkbased on standard stars

November 2, 2009

Author(s)

Gerald T. Fraser, Steven W. Brown, Keith R. Lykke, John T. McGraw, Allan W. Smith, John T. Woodward IV, Peter C. Zimmer, Christopher W. Stubbs

The feasibility of developing a network of telescopes to monitor the composition of the nighttime atmosphere using stellar spectrophotometry is explored. Spectral measurements of the extinction of starlight by the atmosphere would allow, for instance

Measurement of Absorption and Scattering with an Integrating Sphere Detector: Application to Microalgae.

March 1, 2009

Author(s)

Adolfas K. Gaigalas, Hua-Jun He, Lili Wang

A commercial spectrometer with an integrating sphere (IS) detector was used to measure the absorbance of scattering and absorbing suspensions. Analysis of the measurement process showed that two measurements of the absorbance, one with the cuvette placed

Thermal and Chemical Kinetic Characterization of Multiphase and Multicomponent Substances by Laser Heating

October 1, 2008

Author(s)

Ashot Nazarian, Cary Presser

A novel approach is described that determines the thermal behavior and decomposition of multiphase solid and liquid substances, such as chemical wastes, fuels, aerosol particles, and propellants through rapid and controlled heating with laser radiation

Temporal Trends in Anthropogenic and Naturally Produced Brominated Compounds in California Sea Lions (Zalophus californianus), 1993 to 2003

May 1, 2006

Author(s)

H M. Stapleton, Nathan G. Dodder, John Kucklick, Prasad T. Reddy, Michele M. Schantz, Paul R. Becker, Frances Gulland, Barbara J. Porter, Stephen Wise

Black Carbon and Organic Carbon in Aerosol Particles From Crown Fires in the Canadian Boreal Forest

June 1, 2002

Author(s)

Joseph M. Conny, J F. Slater

In the boreal forest, high-intensity crown fires account for an overwhelming proportion of the area burned yearly. Quantifying the amount of black carbon (BC) from boreal crown fires in Canada is essential for assessing the effect on regional climate from

NIST-JANAF Thermochemical Tables. I. Ten Organic Molecules Related to Atmospheric Chemistry

April 1, 2001

Author(s)

O Dorofeeva, V Novikov, Dan A. Neumann

The structural, spectroscopic, and thermodynamic properties of ten organic molecules in the gas phase, including three peroxides and four carboxylic acids, have been reviewed. The calculation of the thermochemical tables involved the critical evaluation of

Boreal Fires, Aerosol Transport, and Feedback to Climate Change: The Need for a Large High-Intensity Boreal Crown Fire Experiment

December 1, 1999

Author(s)

W R. Cofer, C Cahoon, R D, B J. Stocks, J G. Goldhammer, Joseph Conny, M D. Fromm

Proceedings - International Workshop on Green Chemistry and Engineering: Global Collaborations

May 1, 1999

Author(s)

Ellyn S. Beary

The 2nd Annual Green Chemistry and Engineering Conference was held in Washington, DC in early July, 1998. After two days of technical presentations by international experts on cutting-edge technological advances in sustainable chemistry and engineering, a

Feasibility of Applying a Stable Isotopic Tracer for Direct Determination of Dry Particulate Deposition to Soybean Plants

August 1, 1998

Author(s)

William R. Kelly, J M. Hoff, P V. Borgoul, G Tuncel, J M. Ondov, L T. Chen

Carbon-13 Composition of Tropospheric CO in Brazil: A Model Scenario During the Biomass Burn Season

December 1, 1997

Author(s)

Joseph M. Conny, R M. Verkouteren, Lloyd A. Currie

Standard Reference Materials for the Determination of Polycyclic Aromatic Hydrocarbons in Environmental Samples -- Current Activities

February 1, 1993

Author(s)

Stephen A. Wise, Michele M. Schantz, Bruce A. Benner Jr, Reenie M. Parris, R. E. Rebbert, Lane C. Sander, B. J. Koster, S. N. Chesler, Willie E. May