Sentences with phrase «particles of a certain size»

«There may be a non-zero safe ash level for commercial jets, of so many particles of a certain size per minute,» he told New Scientist, «but we just don't know.»

Not exact matches

Philipp Hauke and Peter Zoller from the Department of Theoretical Physics at the University of Innsbruck and the Institute for Quantum Optics and Quantum Information (IQOQI) at the Austrian Academy of Sciences in collaboration with Markus Heyl from the Technical University of Munich, and Luca Tagliacozzo from ICFO — The Institute of Photonic Sciences have found a new way to detect certain properties of many - particle entanglement independent of the size of the system and by using standard measurement tools.

I can't say for certain that after undergoing advanced lab studies (LDL particle number and size, markers of inflammation, tests for genetics like homocysteine, MTHFR and clotting, lipoprotein a, fibrinogen, and ferritin levels) that I would have found one or several defects to treat in Felicia's husband, but it is likely.

In general, the risk of aerosol transmission increases with proximity and duration of exposure to the source; however, once aerosolized, certain pathogens may remain infective over long distances, depending on particle size, the nature of the pathogen, and such environmental factors as temperature and humidity.3

After each of these eruptions we have noted the presence of (generally) submicrometer - sized ash particles and aerosol droplets on collectors, although we can not always be certain of the identity of the volcano responsible for the material.

The processing may require sorting, removal of contaminants, short and / or long term storage, creation of a product (hammer mill or shredding) to create a certain particle size, processing into a pellet or a cube all before injection into the combustion chamber of an electric generating power plant.

So, if we know a certain type of coal plant in southern Pennsylvania, for example, emits some distribution of particle sizes, then how is that distribution used to determine health consequences?