Showing papers in "Journal of Aerosol Science in 2017"

TL;DR: In this article, the performance of low-cost and portable PM sensors under the condition of steady-state particle mass concentration by challenging them with lab-generated particles in different size distributions and compositions was evaluated.

TL;DR: In this article, the accuracy, bias, and precision of three consumer aerosol monitors (Foobot from Airoxlab, Speck from Carnegie Mellon University, and AirBeam from HabitatMap) for measuring mass concentrations in occupational settings were evaluated.

TL;DR: In this paper, the authors compared the performance of the Grimm 1.109 particle spectrometer and the Speck units in indoor and outdoor PM measurements, and determined the limit of detection of the monitors, and the monitors' bias and precision as well as the results' reproducibility.

TL;DR: In this article, the concentrations and size distributions of airborne viable bacteria and fungi were characterized under different weather conditions (e.g., sunny, cloudy, rainy and hazy days).

TL;DR: The present study is the first-ever approach to explore the pulmonary aerosol TD in a digital 17-generation human pulmonary airway model based on the high-resolution computer tomography (HRCT) data by Schmidt et al.

TL;DR: In this article, a whole-lung airway model (WLAM) consisting of subject-specific upper airways from nose/mouth to, say, generation 3, which are then connected to adjustable triple bifurcation units (TBUs).

TL;DR: In this article, the size distributions of atmospheric aerosol mass and several major and trace elements were studied in an urban area in South Poland by means of the thirteen stages Dekati low pressure impactor.

TL;DR: It is found that the number of people and human activities had positive correlations with the concentrations of bacterial bioaerosols, however, the concentration of fungal bioaerOSols was not influenced by human presence or activities.

TL;DR: In this article, the effects of flow rate, relative humidity (RH), and wet vs. dry airway walls on aerosol deposition efficiency (DE) were investigated using a highly idealized mouth-throat (MT) model as a test bed, considering ethanol, sodium chloride and fluorescein as components.

TL;DR: In this paper, a miniature cylindrical differential mobility analyzer (mini- cyDMA) was developed for sub-3-nm particle sizing, which enables it to operate at higher sheath flowrate than the cDMA.

TL;DR: In this article, a measurement campaign has been performed on a Snecma/NPO Saturn SaM146-1S17 turbofan, where radial and angular profiles of particulate matter (PM) properties in the engine exhaust hot flow were measured.

TL;DR: The effect of corona discharge-generated air ions on the filtration of aerosolized bacteriophage MS2 was studied and showed bipolar ion treatment was more effective about 1.7 times than unipolar ion treatment.

TL;DR: In this paper, a direct numerical simulation methodology for investigating the transient non-isothermal sedimentation of circular particles in non-Newtonian fluids was developed, which combined the IB-NLBM with split-forcing algorithm for simulating fluid-particle interactions including thermal effects.

TL;DR: For the prevention and control of nosocomial infections via the aerosol route, more research is needed on identifying settings, medical procedures or equipment that may be associated with an increased risk of aerosol transmission, including defining which procedures are aerosol-generating.

TL;DR: In this paper, the effect of high percentages of exhaust gas recirculation (EGR) and reformate gas combustion on PM characteristics has been analyzed and five different methods of estimating PM fractal dimension reported in the GDI literature have also been compared.

TL;DR: In this paper, the current understanding of the aforementioned forces for colloidal spherical particles and extended the existing theories to rod-shaped particles, representative for instance of Bacillus spores, was reviewed.

TL;DR: In this paper, the state-of-the-art DMA-CPC particle sizing system is examined with respect to counting statistics and the results highlight the importance of knowing the CPC d50 accurately to narrow down the particle concentration uncertainty.

TL;DR: In this article, a modified model for acoustic agglomeration of aerosol particles has been studied by its full consideration of collision efficiency among particles with different sizes, including particle size, acoustic frequency and sound pressure level.

TL;DR: In this article, a review of the current state-of-the-art on aerosol mass-concentration measurement, and on real-time monitoring systems is presented, which suggests that fixed and reliable bulky systems are soon to be replaced by nano and micro scale sensors.

TL;DR: In this article, an idealized terminal alveolus model was developed with rhythmically alveolar moving boundary conditions, and a correlation was proposed for particle deposition in alveoli that captured the separate contributions from the gravitational sedimentation and rhythmic wall motion.

TL;DR: Aerosols created by electronic cigarettes are suspensions of liquid droplets in a gas phase; among these compounds are the "e-liquid" constituents plus the degradation products such as formaldehyde produced during "vaping".

TL;DR: In this paper, the effects of unsaturation and the position of C-C double bond in the alkyl chain on the morphology of soot particles in a laminar coflow diffusion flame are studied.

TL;DR: In this article, a novel lung cancer risk model, able to take into account both ultrafine and coarse particle toxicity, was applied to the particle concentration levels measured in the mainstream aerosol of cigarettes in order to provide a useful provisional tool for testing different smoking scenarios.

TL;DR: In this article, the authors investigated the effective density of airborne wear particles emitted from car brake materials, which were generated by a pin-on-disc machine located in a sealed chamber.

TL;DR: In this paper, experiments were conducted in an on-campus house at Middle East Technical University Northern Cyprus Campus during January 2015 Low fat ground beef meat was grilled using an electric stove with no mechanical or natural ventilation.

TL;DR: In this paper, a tandem differential mobility analyzer and a numerical model were used to demonstrate that the restructuring of soot aggregates due to liquid coatings increases with the surface tension of the coating material.

TL;DR: In this paper, the authors studied the collection efficiencies of the widely used SKC BioSampler when sampling size-resolved biological viable aerosol particles using an Ultraviolet Aerodynamic Particle Sizer (UV-APS) unit.

TL;DR: In this article, the X-ray photoelectron spectra of Pd showed a significantly high binding energy for flame-made Pd/CeO 2 catalysts, possessing a value of 1.7 eV larger than the reference value in literature.

TL;DR: In this paper, the authors examined changes in particle composition and morphology and variability associated with vehicle history and test preparation for the US06 versus FTP cycle, showing that the first day's PM mass emissions are often substantially higher than on following days for US06 cycle, but not the FTP cycle.

TL;DR: Using a physiologically realistic nasal and upper airway replica, this study performed human inhalation simulations of nanoparticles under low to moderate breathing conditions and found that airflow pattern, especially nasal wall shear had a remarkable correlation to particle movement and deposition at the ultrafine scale.