scholarly journals Characterization and comparison of Re-Du-Ning aerosol particles generated by different jet nebulizers

RSC Advances ◽  
2019 ◽  
Vol 9 (52) ◽  
pp. 30292-30301 ◽  
Author(s):  
Yi Zhang ◽  
Brian Chi-Yan Cheng ◽  
Cui Li ◽  
Yonghua Tao ◽  
Chanjuan Yu ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Aerosol Particles ◽  
Dose Uniformity ◽  
Jet Nebulizers

Delivery dose uniformity determination by BRS 2000 breath simulator and realtime particle size distribution monitoring by Spraytec.

scholarly journals Factors determining the most efficient spray distribution for marine cloud brightening

2014 ◽  
Vol 372 (2031) ◽  
pp. 20140056 ◽  
Author(s):  
P. J. Connolly ◽  
G. B. McFiggans ◽  
R. Wood ◽  
A. Tsiamis
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Energy Efficient ◽  
Aerosol Particles ◽  
Care Needs ◽  
Salt Particle ◽  
Aerosol Particle Size ◽  
Spray Distribution ◽  
Added Salt

We investigate the sensitivity of marine cloud brightening to the properties of the added salt particle distribution using a cloud parcel model, with an aim to address the question of, ‘what is the most efficient particle size distribution that will produce a desired cooling effect?’ We examine the effect that altering the aerosol particle size distribution has on the activation and growth of drops, i.e. the Twomey effect alone, and do not consider macrophysical cloud responses that may enhance or mitigate the Twomey effect. For all four spray generation methods considered, Rayleigh jet ; Taylor cone jet ; supercritical fluid ; and effervescent spray , salt particles within the median dry diameter range D m =30–100 nm are the most effective range of sizes. The Rayleigh jet method is also the most energy efficient overall. We also find that care needs to be taken when using droplet activation parametrizations: for the concentrations considered, Aitken particles do not result in a decrease in the total albedo, as was found in a recent study, and such findings are likely to be a result of the parametrizations' inability to simulate the effect of swollen aerosol particles. Our findings suggest that interstitial aerosol particles play a role in controlling the albedo rather than just the activated cloud drops, which is an effect that the parametrization methods do not consider.

Metered dose inhalers III: metaproterenol sulphate; particle size distribution and dose uniformity

1997 ◽  
Vol 15 (11) ◽  
pp. 1709-1718 ◽  
Author(s):  
T.D Cyr ◽  
R.M Duhaime ◽  
S.J Graham ◽  
E.D Ormsby ◽  
R.C Lawrence ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Metered Dose Inhalers ◽  
Dose Uniformity ◽  
Metered Dose

scholarly journals ESTIMATION METHOD OF PARTICLE SIZE DISTRIBUTION (PSD) OF RADIOACTIVE AEROSOLS BY USING INERTIAL SEPARATORS

2018 ◽  
Vol 3 (3) ◽  
pp. 327
Author(s):  
Youesf Husein ◽  
Pripachkin Dmitry ◽  
Budyka Aleksandr ◽  
Karev Andrey ◽  
Tsovyanov Aleksandr
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Aerosol Particles ◽  
Estimation Method ◽  
New Method ◽  
Radioactive Aerosols

This paper describes a new method for determining the dispersed composition of radioactive aerosols using device that containing inertial separators of aerosol particles which separating it into fractions by size.

scholarly journals Characterization of Aerosol Nebulized by Aerogen Solo Mesh Nebulizer

2020 ◽  
Vol 328 ◽  
pp. 01006
Author(s):  
Ondrej Misik ◽  
Milan Maly ◽  
Ondrej Cejpek ◽  
Frantisek Lizal
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Aerodynamic Diameter ◽  
Jet Nebulizers ◽  
Mass Median

Nebulizers are commonly used devices for inhalation treatment of various disorders. There are three main categories of medical nebulization technology: jet nebulizers, ultrasound nebulizer, and mesh nebulizer. The mesh nebulizers seem to be very promising since this technology should be able to produce aerosol with precisely determined particle size and is easy to use as well [1]. Aerosol generated from the mesh nebulizer Aerogen Solo was measured in this work. Particle size distribution with a mass median of aerodynamic diameter (MMAD) was determined by two different methods.

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