Comparative Study of Square and Sine-Wave Excitation Methods for the Measurement of Aerosol Particles Charge and Size Distribution Using Phase Doppler Anemometry

2011 ◽  
Vol 60 (4) ◽  
pp. 1397-1407 ◽  
Author(s):  
Lu Zhang ◽  
Janusz Kulon
Keyword(s):  
Comparative Study ◽  
Size Distribution ◽  
Aerosol Particles ◽  
Sine Wave ◽  
Wave Excitation ◽  
Phase Doppler Anemometry

The comparative study of particle size distribution in magnetic fluids

2002 ◽  
Vol 52 (S1) ◽  
pp. A281-A284 ◽  
Author(s):  
M. Timko ◽  
P. Kopčanský ◽  
M. Koneracká ◽  
A. Skumiel ◽  
M. Labowski ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Comparative Study ◽  
Size Distribution ◽  
Magnetic Fluids ◽  
The Comparative Study

scholarly journals Quantity and Size Distribution of Cough-Generated Aerosol Particles Produced by Influenza Patients During and After Illness

2012 ◽  
Vol 9 (7) ◽  
pp. 443-449 ◽  
Author(s):  
William G. Lindsley ◽  
Terri A. Pearce ◽  
Judith B. Hudnall ◽  
Kristina A. Davis ◽  
Stephen M. Davis ◽  
...  
Keyword(s):  
Size Distribution ◽  
Aerosol Particles

scholarly journals Emission of submicron aerosol particles in cement kilns: Total concentration and size distribution

2014 ◽  
Vol 65 (1) ◽  
pp. 41-49
Author(s):  
Mauro Rotatori ◽  
Silvia Mosca ◽  
Ettore Guerriero ◽  
Antonio Febo ◽  
Marco Giusto ◽  
...  
Keyword(s):  
Size Distribution ◽  
Total Concentration ◽  
Aerosol Particles ◽  
Submicron Aerosol ◽  
Cement Kilns

scholarly journals Comparative study of properties of different pesticide formulations of the same active ingredient

2008 ◽  
Vol 23 (3) ◽  
pp. 201-206
Author(s):  
Slavica Gasic ◽  
Zlatko Oreskovic
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Comparative Study ◽  
Size Distribution ◽  
Active Ingredient ◽  
Oil In Water ◽  
Pesticide Formulations ◽  
Final Estimate ◽  
New Formulation ◽  
Emulsion Oil

Characteristics of two formulations of trifluralin, an emulsifiable concentrate (EC) and emulsion, oil in water (EW), the latter being a new formulation of our design, were investigated and compared. Attention was focused on particle size distribution and aspects of the two aqueous dilute formulations as the most characteristic and comparable parameters. The results show that the trifluralin EW formulation has certain advantages over the EC formulation, but a final estimate will be possible only after testing biological efficacy of the new formulation (EW).

scholarly journals Ice nucleating particles at a coastal marine boundary layer site: correlations with aerosol type and meteorological conditions

2015 ◽  
Vol 15 (12) ◽  
pp. 16273-16323 ◽  
Author(s):  
R. H. Mason ◽  
M. Si ◽  
J. Li ◽  
C. Chou ◽  
R. Dickie ◽  
...  
Keyword(s):  
Size Distribution ◽  
Marine Boundary Layer ◽  
Aerosol Particles ◽  
Meteorological Conditions ◽  
Marine Aerosols ◽  
Coastal Site ◽  
Carbon Particles ◽  
Biological Particles ◽  
Ice Nuclei ◽  
Coastal Marine

Abstract. Information on what aerosol particle types are the major sources of ice nucleating particles (INPs) in the atmosphere is needed for climate predictions. To determine which aerosol particles are the major sources of immersion-mode INPs at a coastal site in Western Canada, we investigated correlations between INP number concentrations and both concentrations of different atmospheric particles and meteorological conditions. We show that INP number concentrations are strongly correlated with the number concentrations of fluorescent bioparticles between −15 and −25 °C, and that the size distribution of INPs is most consistent with the size distribution of fluorescent bioparticles. We conclude that biological particles were likely the major source of ice nuclei at freezing temperatures between −15 and −25 °C at this site for the time period studied. At −30 °C, INP number concentrations are also well correlated with number concentrations of the total aerosol particles ≥ 0.5 μm, suggesting that non-biological particles may have an important contribution to the population of INPs active at this temperature. As we found that black carbon particles were unlikely to be a major source of ice nuclei during this study, these non-biological INPs may include mineral dust. Furthermore, correlations involving tracers of marine aerosols and marine biological activity indicate that the majority of INPs measured at the coastal site likely originated from terrestrial rather than marine sources. Finally, six existing empirical parameterizations of ice nucleation were tested to determine if they accurately predict the measured INP number concentrations. We found that none of the parameterizations selected are capable of predicting INP number concentrations with high accuracy over the entire temperature range investigated.

SIZE DISTRIBUTION OF AIRBORNE AEROSOL PARTICLES WITH ATTACHED α-ACTIVE NUCLEI

1982 ◽  
pp. 553-555
Author(s):  
D.L. Henshaw ◽  
M.S. Hobbs ◽  
C.H. Williams ◽  
A.P. Fews
Keyword(s):  
Size Distribution ◽  
Aerosol Particles
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