Results 111 to 120 of about 19,815 (204)
Repetitively pulsed, wavelength selective laser Patent [PDF]
, 1970 Repetitively pulsed wavelength selective carbon dioxide ...
Hanst, P. L.
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Examining Long-Term Global Climate Change on the Web [PDF]
This article describes an activity in which students use web-based resources to investigate global climate change. The investigation takes the form of a computer activity in which they collect data from the internet on temperature, concentrations of ...
Jacqueline Huntoon, Robert Ridky
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Nucleation of sulfur hexafluoride
AIP Conference Proceedings, 2000 We measured the homogeneous nucleation of sulfur hexafluoride using a diffusion cloud chamber under conditions that avoid the possibility of non-diffusive modes of transport within the cloud chamber thus ensuring reliable data from our measurements. We extended the critical supersaturation measurements into the critical region for SF6 using helium as ...
openaire +2 more sources
Method for creating an aeronautic sound shield having gas distributors arranged on the engines, wings, and nose of an aircraft [PDF]
, 2008 The present invention blocks and/or attenuates the upstream travel of acoustic disturbances or sound waves from a flight vehicle or components of a flight vehicle traveling at subsonic speed using a local injection of a high molecular weight gas ...
Corda, Stephen +2 more
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Atmospheric sulfur hexafluoride in-situ measurements at the Shangdianzi regional background station in China [PDF]
, 2014 Fang, Shuangxi +6 more
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Density measurement in air with saturable absorbing seed gas [PDF]
Approaches which have the potential to make density measurements in a compressible flow, where one or more laser beams are used as probes, were investigated.
Baganoff, D.
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Clinical Ophthalmology, 2013 Yoreh Barak, James W Heroman, Shlomit SchaalDepartment of Ophthalmology and Visual Sciences, University of Louisville, Louisville, KY, USABackground: The purpose of this study was to compare postoperative intraocular pressures and percentage of vitreous ...
Barak Y, Heroman JW, Schaal S
doaj
Air pollution source identification [PDF]
The techniques available for source identification are reviewed: remote sensing, injected tracers, and pollutants themselves as tracers. The use of the large number of trace elements in the ambient airborne particulate matter as a practical means of ...
Fordyce, J. S.
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Modeling and control study of the NASA 0.3-meter transonic cryogenic tunnel for use with sulfur hexafluoride medium [PDF]
The NASA Langley 0.3-m Transonic Cryogenic Tunnel is to be modified to operate with sulfur hexafluoride gas while retaining its present capability to operate with nitrogen.
Balakrishna, S., Kilgore, W. Allen
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Sampling and Measurement of Chlorofluorocarbon and Sulfur Hexafluoride in Seawater [PDF]
, 2010 Bullister, J. L., Tanhua, Toste
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