Particle Number and Concentration
A number-based inventory of particle emissions by civil aviation and the influences on the particle number concentration near Zurich airport
... The particle number and size distribution are crucial metrics for toxicological analysis and aerosol-cloud ...the particle number concentration ...(BC) particle number ...
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Observations of the aerosol particle number concentration in the marine boundary layer over the south-eastern Baltic Sea*
... aerosol particle concentration events, which last for several ...high concentration event ...aerosol particle number concentration 75th percentile declined markedly in ...
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Influence of medium range transport of particles from nucleation burst on particle number concentration within the urban airshed
... This is the author’s version of a work that was submitted/accepted for pub- lication in the following source: Cheung, Hing Cho, Morawska, Lidia, Ristovski, Zoran, & Wainwright, D. (2012) Influence of medium range ...
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Combing Measurements from Mobile Monitoring and a Reference Site to Develop Models of Ambient Ultrafine Particle Number Concentration at Residences
... COMBINING MEASUREMENTS FROM MOBILE MONITORING AND A REFERENCE SITE TO DEVELOP MODELS OF AMBIENT.. ULTRAFINE PARTICLE NUMBER CONCENTRATION AT RESIDENCES.[r] ...
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Experimental investigations of Non-Volatile particle number concentration from a range of multi-utility vehicles over emission cycle complying different norms
... regulated particle metric in vehicle emissions is the total mass, while during last decade; interest in number size distribution has ...the particle matter on public ...under particle ...
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Observations of elevated particle number concentration events at a rural site in New England
... particles. Particle size distributions are extremely useful for identifying nucleation events [Komppula et ...potential particle formation and growth mechanisms on the basis of pollutant levels and wind ...
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Ambient Levels of TSP, PM10, PM2 5 and Particle Number Concentration in Al Samha, UAE
... The rise in TSP and PM 10 levels might be justified by a longer lifetime of par- ticles at low humidity conditions, re-suspension of surface dusts by higher wind speed, and formation of secondary aerosols at high ...
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The Influence of Traffic Flow and Winds Factors on Particle Number Concentration (PNC) around an Urban Intersection
... Conclusions • bivariate polar plots are useful analysis tools to understand the temporal and spatial variation in PNC at street canyon and junction sites; • across-canyon vortices developed in irregular street canyon, ...
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Particle concentration and stokes number effects in multi-phase turbulent channel flows
... fluid. Particle statistical distributions across the wall-normal direction were obtained by splitting the domain into 120 cuboidal regions of equal size, and taking an average over all the particles in that ...the ...
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Simulation of particle formation and number concentration over the Eastern United States with the WRF-Chem + APM model
... ondary particle formation (via the ion-mediated nucleation) and its contribution to total particle number concentration and CCN abundance over the Eastern United ...initial number ...
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Measurement of particle number in exhaust gases
... Analyzers are divided into stationary and portable according to their use. Instruments in use are provided by various manufacturers of measuring equipment. TSI 3795 is a portable analyzer designed for measuring PN ...
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Development of a particle number and particle mass vehicle emissions inventory for an urban fleet
... include particle number concentration (Jones and Harrison ...2006). Particle emissions can be reduced in a variety of ways, ranging from fitting particle traps or introducing new ...
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Measurement of nonvolatile particle number size distribution
... event particle number concentration was stabi- lized and then started decreasing due to wall losses inside the smog ...The particle number concentration de- creased again ...
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Estimating the contribution of photochemical particle formation to ultrafine particle number averages in an urban atmosphere
... new particle formation events occurred on 109 days, accounting for 35% of the total valid ...new particle formation events was higher in Melpitz than in ...absolute concentration of newly formed ...
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Micro-scale variability of atmospheric particle concentration in the urban boundary layer
... urban particle concentrations throughout the ...of particle concentration in the atmosphere, other methods such as modelling arise as integrative options, on condition that model performance reaches ...
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Particle Number PEMS: Inter-Laboratory: Comparison Exercise
... The WLTC tests have been performed after the preconditioning of the after-treatment system, the temperature of the engine coolant was monitored until reached 95°C (this was also the time when the tailpipe NO x ...
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On the potential contribution of open lead particle emissions to the central Arctic aerosol concentration
... of particle number fluxes on an ice floe in the cen- tral Arctic Ocean and found episodic aerosol emission from open ...of particle concentrations – which will be pre- sented elsewhere – corroborate ...
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Assessment of holographic microscopy for quantifying marine particle size and concentration
... the number of ana- lyzed holograms multiplied by the volume of an individual ...measuring particle concentration for the DIHM and our strategy for mitigating these challenges by correcting the ...
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Measurement of particle concentration in horizontal, multiphase pipe flow using acoustic methods: Limiting concentration and the effect of attenuation
... four particle types (two spherical glass, two non-spherical plastic), and a novel method for measuring them, were ...some concentration profiles in horizontal pipe flow were computed for validation purposes ...
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High-Concentration Submicron Particle Size Distribution by Dynamic Light Scattering
... The concentration dependence of the apparent size of a number of polystyrene sphere samples has been determined using the Microtrac NANOTRAC and a PCS ...upper concentration limit, while the NANOTRAC ...
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