Results 151 to 160 of about 1,255,021 (195)

Characterization of Individual Environmental Particles

1988
Abstract Recently, several micro-analysis techniques have been developed which can advantageously be applied to particulate environmental samples to complement measurements made by traditional bulk analysis methods. Automated electron probe X-ray microanalysis in combination with multivariate numerical analysis can, in a relatively short time ...
R. van Grieken, P. Artaxo, P. Bernard, F. Bruynseels, Ph. Otten, H. Storms, Ch. Xhoffer   +6 more
openaire   +1 more source

The identification of individual propellant particles

Journal of the Forensic Science Society, 1990
An identification procedure for single propellant particles is described. It involves the techniques of infrared microspectrophotometry and gas chromatography-mass spectrometry and is capable of detecting all the main propellant constituents including nitrocellulose.
T.G. Kee, D.M. Holmes, K. Doolan, J.A. Hamill, R.M.E. Griffin   +4 more
openaire   +1 more source

Scattering Properties of Individual Hedgehog Particles

The Journal of Physical Chemistry C, 2018
“Hedgehog” particles (HPs) possess a micrometer-sized dielectric spherical core which is densely coated with nanoscale metal oxide spikes. This unique surface topography, resembling the appearance of a hedgehog, provides the particles with the exclusive physiochemical property to stably disperse in both polar and nonpolar solvents without the necessity
Silke R. Kirchner, Man-Nung Su, Joong H. Bahng, Douglas G. Montjoy, Wei-Shun Chang, Nicholas Kotov, Stephan Link   +6 more
openaire   +1 more source

Particle swarm optimization with individual decision

2009 8th IEEE International Conference on Cognitive Informatics, 2009
As a swam intelligent technique, particle swam optimization (PSO) simulates the animal collective behaviors. Since each individual manipulates different experience due to the different living environment, each particle may produce a personal moving direction when making an individual decision at each iteration.
Guohui Jiao, Zhihua Cui, Jianchao Zeng
openaire   +1 more source

Sulfur speciation in individual aerosol particles

Journal of Geophysical Research: Atmospheres, 1996
Sulfur aerosols play an important role in acid deposition and the Earth's energy balance. Important species in these aerosols include methanesulfonates, hydroxymethanesulfonates, sulfates, and sulfites. Because the relative amounts of these species indicate different sources and atmospheric processes, it is important to distinguish them in single ...
Kenneth R. Neubauer, Stephen T. Sum, Murray V. Johnston, Anthony S. Wexler   +3 more
openaire   +1 more source

Individual particle analysis in suburban Osaka

SPIE Proceedings, 2012
Higashi-Osaka is urban area located on the east of Osaka city in Japan. We equip various ground measurement devices in Higashi-Osaka campus of Kinki University. The data supplied by the Cimel instrument are analyzed with a standard AERONET (Aerosol Robotics Network) processing system. We set up an SPM sampler attached to our AERONET site.
Makiko Nakata, Itaru Sano, Sonoyo Mukai
openaire   +1 more source

Magnetic Fluctuations in Individual Superparamagnetic Particles

IEEE Transactions on Magnetics, 2014
Fluctuations of the magnetic moment direction of single Fe 3 O 4 nanoparticles were measured by conductive atomic force microscopy. Superparamagnetic nanoparticles were deposited on an Fe-Pt thin film, and the current through the film and individual particles was detected as a function of time.
Stephan K. Piotrowski, Michael F. Matty, Sara A. Majetich   +2 more
openaire   +1 more source

Automated EPXMA of individual environmental particles

Proceedings, annual meeting, Electron Microscopy Society of America, 1992
In studies on environmental particles, microbeam analysis techniques are still invoked very seldom. This is rather surprising in view of the importance that particles have in the environment. To study particulate samples by individual particle analysis requires the measurements of a large population set in order to obtain statistically meaningful data.
Van Grieken, René, Artaxo, P., Xhoffer, C.   +2 more
openaire   +2 more sources

Mechanical characteristics of individual bio particles

Biomass Conversion and Biorefinery, 2019
The current work presents an experimental procedure to determine the mechanical characteristics of individual biomass particulate materials, including comparatively spherical olive pulp particles and hollow cylindrical hay particles. This study also provides a comparison between the mechanical characteristics of wet and dry olive pulp particles.
Dmitry Portnikov, Haim Kalman, Jennifer Sinclair Curtis, Pratap C. Pullammanappallil   +3 more
openaire   +1 more source

Exposure history of individual cosmic particles

Earth and Planetary Science Letters, 1991
Cosmogenic Be-10 and Al-26 were measured in a suite of stony cosmic spherules derived from deep-sea sediments and the Greenland ice cap. These spherules show clear evidence of exposure to galactic cosmic ray and solar cosmic ray bombardment on time scales from a few times 100,000 years up to as much as 10 to the 7th years.
Nishiizumi, K., Arnold, J.R., Fink, D., Klein, J., Middleton, R., Brownlee, D.E., Maurette, M.   +6 more
openaire   +2 more sources