Showing papers in "Journal of Aerosol Science in 2005"

TL;DR: The direct quadrature method of moments (DQMOM) is formulated, validated, and tested and shown to be an efficient and accurate method for tracking the moments of the particle size distribution (PSD) in a CFD simulation.

TL;DR: In this paper, the effects of aftertreatment devices such as particle traps and catalytic converters on diesel particle properties are discussed, and a selection of systems for dilution, conditioning and measuring is shown.

TL;DR: In this paper, the authors evaluated concentrations of marine bacteria and viruses in natural aerosols and in those simulated by bubbling sea sprays and compared them to the concentrations in SML (200- 400 μ m thick) and in subsurface waters.

TL;DR: In this article, the authors compared simulation results of microparticles and nanoparticle deposition patterns, local concentrations, and segmental averages for a human upper airway model starting from the mouth to planar airway generation G3 under different inspiratory flow conditions.

TL;DR: In this article, a microfabricated system of electrospraying and a method of fabricating the multiplex system is provided in order to increase by orders of magnitude the liquid flow rate to be dispersed and of retaining the quasi-monodispersity of the generated droplets.

TL;DR: In this article, the mobility distributions of electrosprays from solutions of relatively large tetraalkyl ammonium halide salts A + B - produce a series of sharp peaks associated to clusters of the form ( A + ) z (AB ) n, dominated by the bare cation A +.

TL;DR: In this article, the authors measured indoor and outdoor ultrafine particle size distributions in the size range of 6-220nm under different ventilation conditions without indoor aerosol generation sources and found that the size distributions of indoor aerosols showed less variability than the adjacent outdoor aerosols.

TL;DR: In this paper, indoor bioaerosol measurements are presented from a typical apartment in Athens and other indoor establishments in Chania, Greece, where concentrations of airborne bacteria and fungi were measured as colony forming units per cubic meter of air (CFU / m 3 ) collected by impaction onto agar plates.

TL;DR: In this article, a new particle mass classifier, the Couette centrifugal particle mass analyzer (CPMA), is described and compared to the existing aerosol particle mass (APM) analyzer.

TL;DR: In this article, the same flow rate was being electrosprayed throughout each one of the orifices of the multi-injector, and that this value was equal to that issued from the single source.

TL;DR: Collection efficiencies of four bioaerosol samplers (Andersen impactor, AGI-30 impinger, gelatin filter, and nuclepore filter) evaluated for virus-containing aerosols showed that the collection efficiency was significantly affected by the morphology of the virus particles.

TL;DR: In this article, a Hewitt-type corona charger was designed for the purpose of the investigation and tested in a Tandem-DMA experimental configuration with particles produced by a combustion aerosol generator (CAG), while the apparatus allowed for the investigation of the effect of pre-existing charge of the aerosols.

TL;DR: In this paper, the authors present a new approach to decouple aerosol absorption coefficients due to iron oxide in Sahara dust from those due to black carbon (BC) particles, which are measured at the summit of Pico mountain (2225m ASL) in the Azores Islands using a seven-wavelength Aethalometer.

TL;DR: In this paper, the influence of injection pressure, start of injection (SOI) and exhaust gas recirculation (EGR) on the aerosol exhaust particle size distribution emitted by a state-of-the-art Diesel engine was experimentally investigated.

TL;DR: In this paper, a computational fluid dynamics (CFD) calculation was performed to predict and evaluate the effects of cone tip diameter on the collection efficiency and pressure drop of gas cyclones.

TL;DR: In this paper, the authors compared three methods: scanning mobility particle sizer (SMPS), transmission electron microscopy (TEM), and diffusion charging (DC) for estimating aerosol surface area.

TL;DR: In this article, the authors characterize the counting efficiency of the APS as a function of particle size (0.8-10 μ m ), particle type (liquid or solid), and APS model number (3310 vs. 3321).

TL;DR: In this article, an air quality study was conducted in arid-region residences that were cleaned and reoccupied following a major regional flood (Arkansas River, Colorado, USA), which leveraged a suite of aerosol measurements to assess the effects of common flood reclamation practices on indoor air quality.

TL;DR: In this paper, the influence of relative humidity on the aerosol absorption coefficient σ a was modeled for particles representative of the high-alpine site Jungfraujoch (JFJ, 3580m asl).

TL;DR: In this paper, the concentrations of trace metals in aerosols of different sizes in the suburban area of Kanazawa, Japan were determined with inductively coupled plasma mass spectrometry (ICP-MS).

TL;DR: In this paper, a new aerosol time-of-flight mass spectrometer (ATOFMS) was developed for the near real-time analysis of single bioaerosol particles.

TL;DR: In this article, a numerical model for atmospheric aerosol nucleation bursts is presented as a tool for the analysis of measurements, which includes a minimum of physical assumptions and 94 user-controlled parameters.

TL;DR: In this article, a scanning mobility particle sizer (SMPS) measuring a size range of 0.016-0.626 mu m was used to characterise the inhaled and exhaled aerosol during relaxed nasal breathing over a period of 10 min.

TL;DR: In this paper, a dynamical model of respiratory deposition is developed based on an Eulerian approach, which simulates detailed lung deposition along all generations of the respiratory tract by solving numerically the aerosol general dynamics equation (GDE).

TL;DR: In this paper, a tandem differential mobility analyzer (TDMA) system was used to study particle volatility at two apartments, 15 and 40m downwind of the I-405 Freeway in Los Angeles, CA.

TL;DR: In this article, a high humidity tandem differential mobility analyzer (HHTDMA) was used to determine aerosol hygroscopic growth factors at relative humidities (RH) between 90% and 98% under highly temperature-stabilized conditions.

TL;DR: In this article, it was demonstrated that bioaerosols can be characterized by their surface-enhanced Raman spectra, which can be obtained by mixing them with a nanocolloidal suspension of silver.

TL;DR: In this paper, the results of the Cloud and Aerosol Characterization Experiment (CLACE-1) were used to characterize the aerosol at the high-alpine site Jungfraujoch, Switzerland (3580m asl).

TL;DR: In this article, analytical solutions for removal of a polydisperse aerosol by wet scrubbing were derived employing Brownian diffusion and inertial impaction as removal mechanisms, showing good agreement.

TL;DR: In this paper, the availability of a bipolar charger using soft X-ray of 9.5 keV to aerosol nanoparticle measurement was evaluated by investigating the characteristics of ion generation and by comparing the ion generation rate and the bipolar charging states of aerosol particles to those of 241Am α -ray bipolar chargers of 82 and 164 μ Ci radiation.