Results 11 to 20 of about 607,568 (405)

Viral Load of SARS-CoV-2 in Respiratory Aerosols Emitted by COVID-19 Patients while Breathing, Talking, and Singing

medRxiv, 2021
Background: Multiple SARS-CoV-2 superspreading events suggest that aerosols play an important role in driving the COVID-19 pandemic. However, the detailed roles of coarse (>5m) and fine ([≤]5m) respiratory aerosols produced when breathing, talking, and ...
K. K. Coleman, D. J. Tay, Kai Sen Tan, S. Ong, Than The Son, Ming Hui Koh, Yi Qing Chin, H. Nasir, T. Mak, J. Chu, D. Milton, V. Chow, P. Tambyah, M. Chen, Tham Kwok Wai   +14 more
semanticscholar   +1 more source

Growth of sulphuric acid nanoparticles under wet and dry conditions [PDF]

Atmospheric Chemistry and Physics, 2014
New particle formation, which greatly influences the number concentrations and size distributions of an atmospheric aerosol, is often followed by a rapid growth of freshly formed particles.
L. Skrabalova, D. Brus, T. Anttila, V. Zdimal, H. Lihavainen   +4 more
doaj   +1 more source

The aerosol box

Journal of Anaesthesiology Clinical Pharmacology, 2020
Despite being scientifically unproven, aerosol boxes have quickly risen in popularity during the COVID-19 pandemic. They have been created in various shapes and sizes, as well as materials across the world. Aerosol boxes offer a transparent barrier between the patient and the healthcare personnel, during intubation and may prove to be useful when ...
Balavenkatasubramanian Jagannathan, Amjad Maniar   +1 more
openaire   +4 more sources

An overview of the ORACLES (ObseRvations of Aerosols above CLouds and their intEractionS) project: aerosol–cloud–radiation interactions in the southeast Atlantic basin

, 2021
. Southern Africa produces almost a third of the Earth’s biomass burning (BB) aerosol particles, yet the fate of these particles and their influence on regional and global climate is poorly understood.
J. Redemann, R. Wood, P. Zuidema, S. Doherty, B. Luna, S. LeBlanc, M. Diamond, Y. Shinozuka, I. Chang, R. Ueyama, L. Pfister, Ju‐Mee Ryoo, Amie Dobracki, Arlindo M. da Silva, K. Longo, M. Kacenelenbogen, C. Flynn, K. Pistone, N. Knox, S. Piketh, J. Haywood, P. Formenti, M. Mallet, P. Stier, A. Ackerman, S. Bauer, A. Fridlind, G. Carmichael, P. Saide, G. Ferrada, S. Howell, S. Freitag, B. Cairns, B. Holben, K. Knobelspiesse, S. Tanelli, T. L’Ecuyer, Andrew M. Dzambo, O. Sy, G. McFarquhar, M. Poellot, Siddhant Gupta, Joseph R. O'Brien, A. Nenes, M. Kacarab, J. Wong, Jennifer D. Small-Griswold, K. Thornhill, D. Noone, J. Podolske, K. S. Schmidt, P. Pilewskie, Hong Chen, S. Cochrane, A. Sedlacek, T. Lang, Eric J. Stith, Michal Segal-Rozenhaimer, R. Ferrare, S. Burton, C. Hostetler, D. Diner, F. Seidel, S. Platnick, J. Myers, K. Meyer, D. Spangenberg, H. Maring, Lan Gao   +68 more
semanticscholar   +1 more source

Biomass burning aerosols in most climate models are too absorbing

Nature Communications, 2021
Uncertainty in the representation of biomass burning (BB) aerosol composition and optical properties in climate models contributes to a range in modeled aerosol effects on incoming solar radiation.
Hunter Brown, Xiaohong Liu, R. Pokhrel, S. Murphy, Zheng Lu, R. Saleh, T. Mielonen, H. Kokkola, T. Bergman, G. Myhre, R. Skeie, Duncan Watson-Paris, P. Stier, B. Johnson, N. Bellouin, M. Schulz, V. Vakkari, J. Beukes, P. V. van Zyl, Shang Liu, D. Chand   +20 more
semanticscholar   +1 more source

Characterization of Electronic Cigarette Aerosol and Its Induction of Oxidative Stress Response in Oral Keratinocytes. [PDF]

, 2016
In this study, we have generated and characterized Electronic Cigarette (EC) aerosols using a combination of advanced technologies. In the gas phase, the particle number concentration (PNC) of EC aerosols was found to be positively correlated with puff ...
Chang, Chong Hyun, Hu, Shen, Ji, Eoon Hye, Messadi, Diana, Shu, Shi, Sun, Bingbing, Xia, Tian, Zhao, Tongke, Zhu, Yifang   +8 more
core   +3 more sources

Aerosols modification with H2O2 reduces airborne contamination by dental handpieces

Journal of Oral Microbiology, 2021
Objective: We designed an in vitro study to evaluate the efficiency of an 0.5 vol% hydrogen peroxide-based spray in reducing Coronavirus 229E spread during a conventional dental procedure. Methods: A class III cabinet-like chamber was custom-built, using
Andrei Cristian Ionescu, Eugenio Brambilla, Lamberto Manzoli, Giovanna Orsini, Valentina Gentili, Roberta Rizzo   +5 more
doaj   +1 more source

Extreme Saharan dust events expand northward over the Atlantic and Europe, prompting record-breaking PM₁₀ and PM_2.5 episodes [PDF]

Atmospheric Chemistry and Physics
Unprecedented extreme Saharan dust (duxt) events have recently expanded northward from subtropical NW Africa to the Atlantic and Europe, with severe impacts on the Canary Islands, mainland Spain and continental Portugal.
S. Rodríguez, J. López-Darias
doaj   +1 more source

Development and qualitative assesment of medicinal aerosol with lidocaine hydrochloride based on sodium alginate [PDF]

Farmacja Polska, 2021
Medicinal aerosols for external use are a less popular form of the drug than aerosols for internal use, i.e., inhalation aerosols. Most common are dermal and nasal aerosols. If the aerosol is used on damaged skin, it must be sterile.
Marta Czapiewska, Piotr Bilski
doaj   +1 more source

Spatial and temporal variations of aerosols around Beijing in summer 2006: Model evaluation and source apportionment [PDF]

, 2009
Regional aerosol model calculations were made using the Weather Research and Forecasting (WRF)-Community Multiscale Air Quality (CMAQ) and WRF-chem models to study spatial and temporal variations of aerosols around Beijing, China, in the summer of 2006 ...
Blake, DR, Chang, SY, Fast, JD, Hu, M, Kita, K, Koike, M, Kondo, Y, Matsui, H, Miyazaki, Y, Streets, DG, Takegawa, N, Zaveri, RA, Zhang, Q, Zhu, T   +13 more
core   +1 more source