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Molecular dynamics investigation of gold nanoparticle coalescence under realistic gas-phase synthesis conditions J. Aerosol Sci. (IF 4.5) Pub Date : 2024-03-08 P. Grammatikopoulos, E. Toulkeridou
Dependence of nanoparticle (NP) coalescence on various physical parameters (e.g., temperature, number of NPs, NP size, orientation, crystallinity, shape, or composition, etc.) is a very active field of investigation. However, most computational studies on NP coalescence to date are performed in vacuum, with only a handful of studies taking gas pressure into account and even fewer doing a systematic
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Health risk assessment and characterization of PM2.5 bound bioaerosols at the municipal solid waste landfill site of Nagpur, India J. Aerosol Sci. (IF 4.5) Pub Date : 2024-03-05 Pooja Kamdi, Sakshi Patil, Amit Bafana, Asha Lalwani, Anirban Middey, Krishnamurthi Kannan, Saravanadevi Sivanesan
Landfill being the reservoir of organic waste, serves as the most important source in the generation and emission of bioaerosols in the environment, and these bioaerosols have a significant impact on the environment and public health. In India, there are limited studies on the characterization of culturable bacteria and fungi in the bioaerosols originating from landfills. Therefore, the present study
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Operando gas- and particle-phase measurements of combustion cigarette smoke aerosols by vacuum ultraviolet photoionization mass spectrometry J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-29 Feng Zhao, Zuoying Wen, Xuejun Gu, Weijun Zhang, Xiaofeng Tang
Cigarette smoke is a dynamically changing aerosol system and the operando measurement of its complex chemical compositions is challenging. In this work, the gas- and particle-phase components of combustion cigarette smoke aerosols, which usually have different adverse influences on environment and human health, have been separated and their individual compositions are measured online by using a novel
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Effect of Lagrangian time scales on the statistical simulations of droplet penetration through turbulent pipe flows J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-28 Z.R. Milani, F. Razavi, N. Ogrodnik, T. Kamoru, E. Matida
Penetration of droplets in fully-developed turbulent pipe flows (vertical configuration) was studied numerically. Two Reynolds numbers ( = 37,700 and 11,700) based on the pipe diameter were used in the simulations. Statistics used in the single-phase flow characterization (mean velocities, root mean square fluctuation velocities, and turbulence dissipation rate) were obtained from the law of the wall
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Understanding the fuel spray characteristics in the near-nozzle region for a pressure swirl atomizer J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-28 S.K. Vankeswaram, Milan Maly, Jan Jedelsky
In the present study, an experimental investigation is carried out to analyze the Jet A-1 fuel spray characteristics in the near-nozzle region (NNR) of a swirl atomizer for varying injection pressures represented by the liquid Weber number. The droplet characteristics such as mean drop size, velocity components, and their spatial distributions are obtained using phase Doppler anemometer at two different
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Evaluation of methods for characterizing the fine particulate matter emissions from aircraft and other diffusion flame combustion aerosol sources J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-28 Robert Giannelli, Jeffrey Stevens, John S. Kinsey, David Kittelson, Alla Zelenyuk, Robert Howard, Mary Forde, Brandon Hoffman, Cullen Leggett, Bruce Maeroff, Nick Bies, Jacob Swanson, Kaitlyn Suski, Gregory Payne, Julien Manin, Richard Frazee, Timothy B. Onasch, Andrew Freedman, Imad Khalek, Huzeifa Badshah, Daniel Preece, Vinay Premnath, Scott Agnew
The U. S. Environmental Protection Agency in collaboration with the U. S. Air Force Arnold Engineering Development Complex conducted the VAriable Response In Aircraft nvPM Testing (VARIAnT) 3 and 4 test campaigns to compare nonvolatile particulate matter (nvPM) emissions measurements from a variety of diffusion flame combustion aerosol sources (DFCASs), including a Cummins diesel engine, a diesel powered
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On the dependence of electrical mobility on temperature, humidity and structure of alkylammonium ions J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-27 Xuemeng Chen, Juha Kangasluoma, Jakub Kubečka, Ivo Neefjes, Hanna Vehkamäki, Markku Kulmala, Amirreza Tootchi, Farah Mubas Sirah, Leyan Hua, Carlos Larriba-Andaluz, Heikki Junninen
Insights into the effect of temperature (T) and relative humidity (RH) as well as structure and polarisation on ion mobility help the comparison and interpretation of mobility and mass-based data. We measured alkylammonium ions in air under different (14 °C, 24 °C, 34 °C and 41 °C) and RH (0 %, 20 %, 40 %) conditions using two individual setups (in both cases a planar differential mobility analyser
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Measurement and analysis of impact dynamic parameters of micron-sized single particles using particle shadow velocimetry J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-27 Zhimin Zheng, Qichao Sun, Ninghao Zhang, Bo Shen, Xinqing Gao, Mingqiang Gao, Junchao Xu
The impact dynamics of micro-sized particles is still a fascinating topic of research, which can contribute to the understanding of the mechanisms of adhesion and rebound of these particles. A high-precision measurement system was developed that combines hardware, software, and numerical simulation methods to determine the impact dynamics parameters of micro-sized single particles under high temperature
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On the fractal dimension of carbon black particles in pyrolysis flow reactors J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-27 Arash Khabazipur, Nick Eaves
This study presents a numerical approach for simulating the internal morphology of carbon black particles formed in a pyrolysis reactor. The simulation process involves a two-step approach using population balance models (PBM) and detailed population balance models (DPBM), solved via sectional and stochastic methods, to simulate the arrangement of primary particles within aggregates to allow determination
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Characterization of complex particle properties by mobility-classified mass spectrometry – A case study for glutathione capped gold nanoclusters J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-23 Christian Lübbert, Wolfgang Peukert
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Particle tracking schemes for micron particle deposition in a 90° pipe bend and nasal airway geometry J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-21 Patrick Warfield-McAlpine, David F. Fletcher, Kiao Inthavong
Computational studies of micron particle deposition is used to predict inhaled particles through the nasal cavity for understanding drug delivery or toxicology risks. To ensure reliable results in future studies, this study evaluated particle tracking schemes and determined the most appropriate settings for predicting micron particle deposition in a pipe bend and nasal cavity geometry. Micron particles
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A new automatic analysis tool for the determination of primary particle size from electron microscopy images: Application of the Cellpose software J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-17 Sihane Merouane
To assess if an aggregated or an agglomerated material has to be considered as a nano-material, the size distribution of its constituent primary particles needs to be measured and the median diameter determined. To this end, the reference method uses either transmission or scanning electron microscopy to obtain images of the sample. The size of a significant number, usually a few hundreds, of primary
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On the intricacies of soot volume fraction measurements in counterflow diffusion flames with light extinction: Effects of curtain flow J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-17 Jiwei Zhou, Jianguo Du, Mengxiang Zhou, Yu Wang
Counterflow diffusion flame is an attractive platform for fundamental research on kinetics of soot formation. Accurate determination of soot volume fraction in the flame is a prerequisite for in-depth analysis of the sooting characteristics and assessment of predictive soot models. Light extinction has been proven to be an efficient technique for measuring soot volume fraction thanks to its non-intrusiveness
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Quality control of Lagrangian indoor particle transport simulation: Effects of particle numbers, ventilation strategy, and sampling volume J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-15 Ye Seul Eom, Donghyun Rim
Airborne particle transport in indoor environments plays an important role in occupant exposure to aerosols and public health problems. Several studies have examined indoor airflow and particle transport using computational fluid dynamics models. For the Lagrangian particle tracking model, the minimum particle concentration necessary for accurate prediction may vary with the airflow regime and sampling
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Announcement of the 2023 Journal of Aerosol Science Excellence in Research Award (JASER) Recipient J. Aerosol Sci. (IF 4.5) Pub Date : 2024-02-06 Chris Hogan
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Two-phase hydrodynamics and aerosol mass transfer characterization in pool scrubbing: A simultaneous measurement technique J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-26 Alvaro Ramos Perez, Terttaliisa Lind, Victor Petrov, Annalisa Manera, Horst-Michael Prasser
The bubbling of particle-contaminated gases through a liquid pool, called aerosol scrubbing, is a reliable, robust, and efficient collection technique to retain harmful aerosols from industrial processes or hazardous incidents. In this multiphase mass transfer phenomenon, the two-phase flow mechanics strongly influences the particle transport from the gas in the bubble to the surrounding liquid. The
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Measurements of the thermophoretic force on submicrometer particles in gas mixtures J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-25 Li Li, Sudarshan K. Loyalka, Tomoya Tamadate, Deepak Sapkota, Hui Ouyang, Christopher J. Hogan
Thermophoresis, i.e. particle migration driven by a thermal energy gradient, has been of long-standing interest in aerosol science, yet is incompletely understood. For instance, for submicrometer particles in multicomponent gas mixtures, theories describing the thermophoretic force have not been fully developed and experimentally tested. Such particles fall outside both the continuum limit, where gas
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Exploration of intra-city and inter-city PM2.5 regional calibration models to improve low-cost sensor performance J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-18 Sakshi Jain, Naomi Zimmerman
Low-cost PM2.5 sensors often suffer from environmental cross-sensitivities, requiring regular calibration across a wide range of concentrations. This is typically achieved by co-locating LCS with regulatory stations and using statistical models. However, this approach becomes challenging in regions with limited regulatory monitoring stations or access. To address this challenge, we explored building
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CFPD-PK simulation of inhaled Delta-9-tetrahydrocannabinol aerosol dynamics: Transport, deposition, and translocation in a mouth-to-G10 subject-specific human airway J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-20 Ted Sperry, Yu Feng, Chen Song, Zhiqiang Shi
Medical cannabis is increasingly used as an alternative therapy for various conditions, including chronic pain, multiple sclerosis, epilepsy, and cancer-related symptoms. However, it is crucial to ensure that patients receive the intended dose of tetrahydrocannabinol (THC) from inhaled cannabis for optimal therapeutic effect without overdose risk. This requires a comprehensive understanding of the
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The effect of electrode composition on bimetallic AgAu nanoparticles produced by spark ablation J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-03 L. Jönsson, M. Snellman, A.C. Eriksson, M. Kåredal, R. Wallenberg, S. Blomberg, A. Kohut, L. Hartman, M.E. Messing
A flexible way to generate bimetallic nanoparticles with high control of their composition is to use spark ablation of alloyed electrodes. It has been generally accepted and stated that particles produced using spark ablation of alloyed electrodes obtain the same chemical composition as the electrodes. However, we identify a lack of studies fully supporting the connection between electrode and particle
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Investigation of aerosol generation through laser cleaning of various surfaces and optimization of mist & spray scavenging J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-02 Avadhesh Kumar Sharma, Ruicong Xu, Zeeshan Ahmed, Shuichiro Miwa, Shunichi Suzuki, Atsushi Kosuge
To ensure the safe and effective decommissioning of the Fukushima Daiichi Nuclear Power Plant (NPP), it is crucial to investigate the behavior of radioactive aerosols generated during the laser decontamination of radiation hot spots and laser cutting of fuel debris. Understanding the generation and dispersion patterns of these aerosols is of utmost importance for the proper planning and execution of
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Microscopic visualization of heterogeneous condensation of water vapor on hydrophilic and hydrophobic particles J. Aerosol Sci. (IF 4.5) Pub Date : 2024-01-01 Li Lv, Xiangcheng Wu, Longfei Chen, Junchao Xu, Guangze Li, Lijuan Qian
Heterogeneous condensation of water vapor on particles is widely used in the fields of atmospheric cloud physics and industrial particulate abatement. Particles surface wettability plays a fundamental role in water vapor condensation, but a microscopic insight of the impact of particles surface wettability on vapor condensation is lacked. Therefore, the Environmental Scanning Electron Microscope (ESEM)
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ML-assisted optimization method for the prediction of 3-dimensional fractal structures from microscopic images J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-29 Abhishek Singh, Saket Kohinkar Kailas, Thaseem Thajudeen
Aggregated aerosol particles released from high temperature processes and combustion processes are often described as quasi-fractal aggregates, where the shape of these particles is represented by the scaling law. A detailed understanding of the morphology is quite important as various properties are strongly dependent on the particle shape. Electron microcopy based image analysis is the most commonly
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Applicability of aethalometers for monitoring diesel particulate matter concentrations and exposure in underground mines J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-27 Hanna Koponen, Kaisu Lukkarinen, Maija Leppänen, Laura Kilpeläinen, Sampsa Väätäinen, Paula Jussheikki, Antti Karjalainen, Joonas Ruokolainen, Pasi Yli-Pirilä, Mika Ihalainen, Marko Hyttinen, Pertti Pasanen, Olli Sippula
Occupational exposure to diesel exhaust is regulated by legislation in Europe owing to its carcinogenic effects on humans. In underground mines, exposure to diesel exhaust requires regular monitoring. In this work, we investigate the usage of aethalometer AE33 and portable micro-aethalometer MA200 to assess occupational exposure to diesel exhaust in two underground mines. These instruments provide
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Study of electro-migration and capture of particles by a charged pendant droplet J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-21 Debabrat Biswal, Bahni Ray, Debabrata Dasgupta, Rochish M. Thaokar, Y.S. Mayya
To understand the particle scavenging mechanisms by charged droplets in air cleaning technologies, we investigate the phenomena of non-incorporation/non-attachment and return/rebound of airborne particles/clusters upon impacting charged droplets. Using high-speed imaging, the motion and fate of particles and clusters lifted from a surface and colliding with a stationary droplet suspended from an electrified
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An experimental study of the effect of individual upper airway anatomical features on the deposition of dry powder inhaler formulations J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-23 Zhaoqi Ma, Liam Milton-McGurk, Patricia Tang, Hak-Kim Chan, Dino Farina, Shaokoon Cheng, Agisilaos Kourmatzis
This study aims to investigate the effects of different pharynx anatomical features on the delivery of inhaled aerosols. Six in-vitro upper airway models reconstructed using anatomical images acquired by Magnetic Resonance Imaging (MRI) were used for the experiments. A geometrically accurate airway model was produced, and five other different airway models, each missing one or more specific anatomical
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The study of optical properties of single soot aggregate using three-dimension soft X-ray tomographic reconstruction J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-21 Zhenhai Qin, Haihui Wang, Yingjie Tang, Chenchong Zhang, Jie Luo, Yuping Sun, Yongming Zhang, Qixing Zhang
The linear depolarization ratio (LDR) is a key parameter used in remote sensing to distinguish particle types. The LDR of the soot fractal model is uneasy to match the measured values. In this paper we used three-dimensional (3D) synchrotron soft X-ray tomography (SXT) for the 3D reconstruction of the toluene-burning soot particles and used discrete dipole approximation to calculate optical properties
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Comparisons of aerosol generation across different musical instruments and loudness J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-20 Jianghan Tian, Henry E. Symons, Natalie A. Watson, Justice Archer, Lauren P. McCarthy, Joshua Harrison, Malcolm Kittle, William J. Browne, Brian Saccente-Kennedy, Ruth Epstein, Christopher M. Orton, James D. Calder, Pallav L. Shah, Declan Costello, Jonathan P. Reid, Bryan R. Bzdek
Respiratory aerosols can serve as vectors for disease transmission, and aerosol emission is highly activity-dependent. COVID-19 severely impacted the performing arts due to concerns about disease spread by respiratory aerosols and droplets generated during singing and playing musical instruments. Aerosol generation from woodwind and brass performance is less understood compared to singing due to uncertainty
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Dilution versus fractionation: Separation technologies hyphenated with spICP-MS for characterizing metallic nanoparticles in aerosols J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-17 Tianyu Cen, Yi-Bo Zhao, Andrea Testino, Jing Wang, Laura Torrent, Christian Ludwig
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Los Angeles Basin's air quality transformation: A long-term investigation on the impacts of PM regulations on the trends of ultrafine particles and co-pollutants J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-12 Mohammad Mahdi Badami, Ramin Tohidi, Constantinos Sioutas
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High-concentration measurements with optical aerosol spectrometers by signal fluctuation analysis J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-11 Lukas Oeser, Nakul Samala, Lars Hillemann, Daniel Göhler, Jan Müller, Claudia Jahn-Wolf, Jens Lienig
Optical aerosol measurement systems can be classified into single-particle counting techniques and ensemble techniques. In single-particle counting instruments, such as optical aerosol spectrometers, each particle is analyzed individually. This allows for the accurate measurement of the number concentration and the size distribution of the measured aerosol. Current aerosol spectrometers suffer from
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The proceeded ammonia release from ammonium nitrate owing to sodium malonate addition: Dependence of RH, acidity and surfactant J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-15 Wei Wang, Fengfeng Dong, Shufeng Pang, Yunhong Zhang
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Neural networks for classification and segmentation of thermally-induced droplet breakup in spray-flame synthesis J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-10 Niklas Jüngst, Veysel Ersoy, Gregory J. Smallwood, Sebastian A. Kaiser
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Optical properties from extinction cross-section of single pollen particles under laboratory-controlled relative humidity J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-08 A. Valenzuela, F.J. García-Izquierdo, G. Sánchez-Jiménez, E. Bazo, J.L. Guerrero-Rascado, P. Cariñanos, L. Alados-Arboledas, F.J. Olmo-Reyes
A growing body of research suggests that pollen suspended in the atmosphere have a major environmental and climatic impact. However, our current knowledge of pollen is rather limited with respect to its extinction capacity, its optical properties and how these vary with atmospheric water content. Understanding their water absorption capacity can improve our understanding of their radiative effects
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Dynamics of unipolar charged particles flowing through a cylindrical tube at high number concentrations J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-05 Akshay Shridhar Kale, Mino Woo, Jacob J. Swanson, Dong-Ha Lim, Adam M. Boies
This work provides a theoretical and non-dimensional numerical analysis of the dynamics of gas-borne unipolar charged particles flowing through a cylindrical tube at high number concentrations. It is discovered that above a threshold input particle number concentration, the concentration at the exit of the tube is nearly constant and independent of further increase in the input. Based on a maximum
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Performance of intraoperative surgical smoke management technologies for laparoscopic surgery: A comparative in-vivo pig study J. Aerosol Sci. (IF 4.5) Pub Date : 2023-12-05 Daniel Göhler, Levon Aslanyan, Kathrin Oelschlägel, Petru Bucur, Jonathan Buggisch, Nadia Azhari, Andreas Rudolph, Sébastien Roger, Michael Stintz, Dirk Bausch, Cédric Demtröder, Mehdi Ouaissi, Urs Giger-Pabst
Background Various technologies exist to remove surgical smoke. Despite high significance in surgical practice, comparative in-vivo performance data are missing. Study design The performance of five smoke management technologies (venting, passive filtering, active filtering, circular filtration, electrostatic precipitation) was analysed in-vivo by three different laparoscopic interventions (cholecystectomy
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Technical note: The Graetz problem at small Peclet number and its application to sizing condensation particle counters J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-29 Juan Fernandez de la Mora, Francisco J. Higuera
We extend to small Peclet number Pe the familiar high-Pe solution to the Graetz problem of heat/mass transfer in a tube with parabolic flow with a wall temperature discontinuity at an axial position z = 0. Retaining diffusion in the axial direction results only in slight shifts in the eigenfunctions describing the problem. This enables the characterization of the saturation field S by separation of
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Design of a sheathed water condensation particle counter with variable saturation ratio J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-18 Francisco J. Higuera, Juan Fernandez de la Mora
We consider a particle condensation device where a cold aerosol enters at one open end of a tube. The wall of the tube is porous beyond a certain section. A stream of cold air is injected radially and symmetrically through an initial focusing region of the porous wall, and a stream of warm humid air with a saturation ratio S is injected in a condensation region further downstream. The configuration
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Electrodynamic single-particle trap integrated into double-cavity ring-down spectroscopy for light extinction J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-07 A. Valenzuela, E. Bazo, R.A. Rica, L. Alados-Arboledas, F.J. Olmo-Reyes
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A simple approach to simulate corona-charged electret filters J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-11 S. Gautam, A. Kumar, H.V. Tafreshi, B. Pourdeyhimi
This paper presents a novel computational model devised to simulate how different ways of corona-charging a fibrous filter can impact its aerosol collection efficiency. The model assigns different bipolar charges to the fibers in the media based on how the corona-generated negative ions impact these fibers they travel from the corona needles towards the grounded surface underneath the media. The charge
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Corrigendum to “Technical note: Identifying a performance change in the Plantower PMS 5003 particulate matter sensor” [Journal of Aerosol Science 174 (2023) 106256] J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-08 N. Searle, K. Kaur, K. Kelly
Abstract not available
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Modeling adhesion and aerodynamic removal of particles and spores from substrates J. Aerosol Sci. (IF 4.5) Pub Date : 2023-11-07 Gregory S. Shallcross, William A. Hoey, John R. Anderson, Carlos Soares, Moogega Cooper
During launch operations, mission critical hardware and materials are encapsulated in a fairing prior to deployment. Depressurization can induce particle removal from fairing walls and redistribute them onto the payload. This poses serious challenges for current and future missions. This includes organic, inorganic, and biological material which can contaminate the surrounding environment. Given the
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Corrigendum to “Characterization of adhesion force in aerodynamic particle resuspension” [Journal of Aerosol Science 128 (2019) 89–98] J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-30 Patrick Fillingham, Kalyan Kottapalli, Xiaolin Zhan, Igor V. Novosselov
Abstract not available
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Erratum to “Characterization of adhesion force in aerodynamic particle resuspension” [Journal of Aerosol Science 128 (2019) 89–98] J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-25 Patrick Fillingham, Kalyan Kottapalli, Xiaolin Zhan, Igor V. Novosselov
Abstract not available
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Effect of transient inhalation on powder evacuation and dispersion in a typical dual air inlet dry powder inhaler J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-20 Ajit Kumar, Agisilaos Kourmatzis, Hak-Kim Chan, Shaokoon Cheng, Gajendra Singh
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Preparing dry powder inhalation formulation of salbutamol sulfate using an ultrasonic atomizer device J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-23 Shadi Yaqoubi, Mohaddese Sokuti, Sahand Mazloum-Ravasan, Kofi Asare-Addo, Hamed Hamishehkar, Ali Nokhodchi
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Development of a physics-based method for calibration of low-cost particulate matter sensors and comparison with machine learning models J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-21 Brijal Prajapati, Vishal Dharaiya, Manoranjan Sahu, Chandra Venkatraman, Pratim Biswas, Kajal Yadav, Delwin Pullokaran, Ramya Sunder Raman, Ruqia Bhat, Tanveer Ahmad Najar, Arshid Jehangir
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Rotating disk diluter hyphenated with single particle ICP-MS as an online dilution and sampling platform for metallic nanoparticles characterization in ambient aerosol J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-20 Tianyu Cen, Laura Torrent, Andrea Testino, Christian Ludwig
The application of single particle inductively coupled plasma mass spectrometry (spICP-MS) for online metallic nanoparticles (NPs) characterization in ambient aerosol remains a challenge. In this study, a hyphenated setup consisting of a rotating disk diluter (RDD) with spICP-MS (RDD-spICP-MS) was used for online sampling and characterization NPs in ambient pressure aerosols. The elemental composition
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The effect of the design of the mini cyclonic DPIs on the emitted dose by modelling approach J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-20 Zeyu Li, Zhenbo Tong, Lixing Zhang, Fen Huang, Aibing Yu
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Thermofluid dynamics and droplets transport inside a large university classroom: Effects of occupancy rate and volumetric airflow J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-14 Andrea Carlo D'Alicandro, Alfonso Capozzoli, Alessandro Mauro
The airborne droplets released by humans while speaking or coughing are the main sources of human-to-human contagion for airborne transmissible diseases. Due to the recent SARS-Cov2 pandemic, indoor transmission in classrooms and other environments is an interesting topic investigated by the scientific community. In this work, the thermofluid dynamic conditions and the droplet transport was analysed
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Digital in-line holography to explore saliva aerosolization mechanisms in speech J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-14 Ashley L. Nord, Patrice Dosset, Pierre Slangen, Manouk Abkarian
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In-situ charge reduction of electrospray plumes by unipolar corona ions J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-07 Jordi Grifoll, Joan Rosell-Llompart
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Axisymmetric inertialess model for the capture of airborne microparticles using an electrospray J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-06 I.G. Loscertales, J. Rivero-Rodríguez, F.J. Higuera, A.J. Hijano
We theoretically analyze the effectiveness of an electrospray of ultrafine droplets to filter out micron sized particles from a gas stream. To that end, we introduce an axisymmetric configuration where the airborne particles merge with the electrospray. The droplets attach to the particles, charging them, and both droplets and charged particles are eventually driven towards a collector by means of
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The effect of surface roughness on the viscoelastic energy dissipation in a particle–wall collision J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-06 Yating Wang, Yiyang Zhang, Zhu Fang, Xinxin Wu
The particle collision on a wall with roughness is common in nature and industries, but not well understood yet. The presence of surface roughness greatly increases the complexity of local contact and makes it difficult to predict the energy dissipation by analytical models. In this work, we investigate the energy dissipation in a dynamic particle–wall collision with regular hemisphere roughness. The
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A thermal evaporator for aerosol core-shell nanoparticle synthesis J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-02 Markus Snellman, Namsoon Eom, Maria E. Messing, Knut Deppert
Segregated bimetallic nanoparticles like core-shell nanoparticles are of interest in various fields including biomedicine, catalysis, and optoelectronics. Aerosol technology is an optimal platform to control nanoparticle size, structure, and composition, which are some of the most important parameters tuning the material performance for the intended applications. Here, we develop a novel evaporator
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A Diffusion-Inertia Model for the simulation of particulate pollutants dynamics inside a car cabin J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-05 Mokhtar Djeddou, Amine Mehel, Georges Fokoua, Anne Tanière, Patrick Chevrier
Simulations of particle pollutants dynamics inside a car cabin were performed using the Diffusion-Inertia Model (DIM) coupled to the RANS (Reynolds-averaged Navier–Stokes equations) k−ω SST turbulence model for single-phase flow. The DIM model has been implemented in a commercial CFD solver and then validated on some reference flow configurations. The validation included particle dispersion in ventilated
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Inertial capture of aerosol particles using liquid bridges in cross flow J. Aerosol Sci. (IF 4.5) Pub Date : 2023-10-02 I.E. Kurtyigit, Y. Guo, J.P. Singer, E.P. DeMauro, G. Drazer
We investigate the inertial capture of aerosol particles, suspended in a laminar cross flow between parallel plates, by stationary cylindrical liquid bridges. We track the motion and fate of individual aerosol droplets (3–9 μm diameter) suspended in a flow moving across a single liquid bridge or two-bridge systems, using high-speed imaging under a microscope. First, we measure the capture efficiency
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Relationship of laser-induced fluorescence and scattered signal intensities of fluorescent PSL particles J. Aerosol Sci. (IF 4.5) Pub Date : 2023-09-23 Kentaro Misawa, Yuto Kasai
The laser-induced fluorescence technique has been used to measure primary biological aerosol particles (PBAPs) in the atmosphere because of its ability to classify the origins of particles based on the combination of excitation and detection wavelengths. However, information on the fluorescence intensity related to the amounts of fluorescent compounds in airborne particles measured by this method is
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Effects of ferrocene addition on soot formation characteristics in laminar premixed burner-stabilized stagnation ethylene flames J. Aerosol Sci. (IF 4.5) Pub Date : 2023-09-22 Yuxin Zhou, Qingyan He, Yutong Sha, Chang Shen, Xiaoqing You
The influence of ferrocene addition (∼60 ppm on a molar basis) on soot formation in laminar premixed burner-stabilized stagnation ethylene flames (with an equivalence ratio of 2.0) is investigated both experimentally and computationally. The results show that ferrocene addition has a very small effect on both flame temperature and concentrations of small soot precursors from kinetic modeling, but apparently