A population balance model is formulated for transport of stable particulate suspensions in porous media. Equations for particle and pore size distributions were derived from the stochastic Master equation. The model accounts for particle flow reduction due to restriction for large particles to move through small pores. An analytical solution for low particle concentration is obtained for gener...

Abstract. Atmospheric new particle formation (NPF) is a crucial process driving aerosol number concentrations in the atmosphere; it can significantly impact evolution of atmospheric and cloud processes. This study analyses at least 1 year asynchronous size distributions from six different locations India. We also analyze frequency NPF its contribution to condensation nuclei (CCN) concentrations...

Atmospheric aerosol particles have several important effects on the environment and human society. The exact impact of aerosol particles is largely determined by their particle size distributions. However, no single instrument is able to measure the whole range of the particle size distribution. Estimating a particle size distribution from multiple simultaneous measurements remains a challenge ...

Many environmental and agricultural problems are not restricted to national boundaries and therefore require international cooperation if solutions are to be found. Often, these solutions require the ability to use soil data as input in simulation models, however, despite a number of recognised international standards, soil data are rarely compatible across national frontiers. This Ž . problem ...

Richardson, M.J. and Gardner, W.D., 1985. Analysis of suspended-particle-size distributions over the Nova Scotian Continental Rise. In: A.R.M. Nowell and C.D. Hollister (Editors), Deep Ocean Sediment Transport Preliminary Results of the High Energy Benthic Boundary Layer Experiment. Mar. Geol., 66: 189--203. The relationships of particle-size distributions to particle concentrations, silicate c...

OBJECTIVES The purpose of these studies was to understand the influence of cosolvent and surfactant contributions to particle size distributions emitted from solution metered dose inhalers (pMDIs) based on the propellant HFA 227. METHODS Two sets of formulations were prepared: (a) pMDIs-HFA 227 containing cosolvent (5-15% w/w ethanol) with constant surfactant (pluronic) concentration and (b) ...