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Showing 1 to 12 of 3866 entries
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Mechanisms of Heterogeneous Oxidations at Model Aerosol Interfaces by Ozone and Hydroxyl Radicals

EPSCoR Research Infrastructure Improvement Program: Bridging EPSCoR Communities AND Program Evaluation

Pillar-Little EA.
GSID: ei0qMAP6q-wJ
EA Pillar-Little - 2017 - uknowledge.uky.edu

Atmospheric aerosols play an important role in climate by scattering and absorbing radiation and by serving as cloud condensation nuclei. An aerosol's optical or nucleation properties are driven by its chemical composition. Chemical aging of aerosols by atmospheric oxidants,...

Evaluating the potential for Archaea to serve as ice nucleating particles

EPSCoR Research Infrastructure Improvement Program AND Program Evaluation

Ceniceros JE, Creamean JM.
GSID: hB-0xbdLabEJ
JM Creamean, JE Ceniceros… - Biogeosciences …, 2020 - pdfs.semanticscholar.org

Aerosols play a crucial role in cloud formation. Biologically-derived materials from microorganisms such as plant 10 bacteria, fungi, pollen, and various vegetative detritus can serve as ice nucleating particles (INPs), some of which initiate glaciation in clouds at relatively...

Increasing eolian dust deposition in the western United States linked to human activity

Cultural Transformation in the Geoscience Community AND Program Evaluation

Ballantyne AP, Mahowald NM, Neff JC.
GSID: UfNzhilB-vYJ
JC Neff, AP Ballantyne, GL Farmer, NM Mahowald… - … Geoscience, 2008 - nature.com

Mineral aerosols from dust are an important influence on climate and on marine and terrestrial biogeochemical cycles. These aerosols are generated from wind erosion of surface soils. The amount of dust emission can therefore be affected by human activities...

Evaluating the potential for Haloarchaea to serve as ice nucleating particles

EPSCoR Research Infrastructure Improvement Program AND Program Evaluation

Ceniceros JE, Creamean JM.
GSID: kd2_x-yWR2gJ
JM Creamean, JE Ceniceros, L Newman… - …, 2021 - bg.copernicus.org

Aerosols play a crucial role in cloud formation. Biologically derived materials from bacteria, fungi, pollen, lichen, viruses, algae, and diatoms can serve as ice nucleating particles (INPs), some of which initiate glaciation in clouds at relatively warm freezing temperatures....

High levels of reactive gaseous mercury observed at a high elevation research laboratory in the Rocky Mountains

EPSCoR Research Infrastructure Improvement Program AND Program Evaluation

Faïn X, Hallar AG, Mccubbin I, Obrist D.
GSID: jELJ5a3DnmsJ
X Faïn, D Obrist, AG Hallar, I Mccubbin… - … Chemistry and Physics, 2009 - acp.copernicus.org

The chemical cycling and spatiotemporal distribution of mercury in the troposphere is poorly understood. We measured gaseous elemental mercury (GEM), reactive gaseous mercury (RGM) and particulate mercury (Hg P) along with carbon monoxide (CO), ozone (O 3), aerosols, and...

Numerical Model to Characterize the Size Increase of Combination Drug and Hygroscopic Excipient Nanoparticle Aerosols.

Aerosol science and technology : the journal of the American Association for Aerosol Research

Longest PW, Hindle M.
PMID: 21804683
Aerosol Sci Technol. 2011 Jan 01;45(7):884-899. doi: 10.1080/02786826.2011.566592.

Enhanced excipient growth is a newly proposed respiratory delivery strategy in which submicrometer or nanometer particles composed of a drug and hygroscopic excipient are delivered to the airways in order to minimize extrathoracic depositional losses and maximize lung retention....

Real-time assessment of cigarette smoke particle deposition in vitro.

Chemistry Central journal

Adamson J, Hughes S, Azzopardi D, McAughey J, Gaça MD.
PMID: 22958446
Chem Cent J. 2012 Sep 10;6(1):98. doi: 10.1186/1752-153X-6-98.

BACKGROUND: Recently there has been a rapid increase in approaches to assess the effects of cigarette smoke in vitro. Despite a range of gravimetric and chemical methods, there is a requirement to identify simpler and more reliable methods to...

Rapid formation and evolution of an extreme haze episode in Northern China during winter 2015.

Scientific reports

Sun Y, Chen C, Zhang Y, Xu W, Zhou L, Cheng X, Zheng H, Ji D, Li J, Tang X, Fu P, Wang Z.
PMID: 27243909
Sci Rep. 2016 May 31;6:27151. doi: 10.1038/srep27151.

We investigate the rapid formation and evolutionary mechanisms of an extremely severe and persistent haze episode that occurred in northern China during winter 2015 using comprehensive ground and vertical measurements, along with receptor and dispersion model analysis. Our results...

Heterogeneous Oxidation of Catechol.

The journal of physical chemistry. A

Pillar-Little EA, Zhou R, Guzman MI.
PMID: 26403273
J Phys Chem A. 2015 Oct 15;119(41):10349-59. doi: 10.1021/acs.jpca.5b07914. Epub 2015 Oct 01.

Natural and anthropogenic emissions of aromatic hydrocarbons from biomass burning, agro-industrial settings, and fossil fuel combustion contribute precursors to secondary aerosol formation (SOA). How these compounds are processed under humid tropospheric conditions is the focus of current attention to...

Characteristics of carbonaceous aerosols: Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain.

The Science of the total environment

Yao L, Yang L, Chen J, Wang X, Xue L, Li W, Sui X, Wen L, Chi J, Zhu Y, Zhang J, Xu C, Zhu T, Wang W.
PMID: 27031303
Sci Total Environ. 2016 Jul 01;557:520-30. doi: 10.1016/j.scitotenv.2016.03.111. Epub 2016 Mar 29.

To determine the characteristics of carbonaceous aerosols in rural areas of the North China Plain, field measurements were conducted at Yucheng (YC) in the summers of 2013 and 2014. The concentrations of carbonaceous aerosols at YC exhibited clear diurnal...

Aerosol absorption measurement at SWIR with water vapor interference using a differential photoacoustic spectrometer.

Optics express

Zhu W, Liu Q, Wu Y.
PMID: 26368414
Opt Express. 2015 Sep 07;23(18):23108-16. doi: 10.1364/OE.23.023108.

Atmospheric aerosol plays an important role in atmospheric radiation balance through absorbing and scattering the solar radiation, which changes local weather and global climate. Accurate measurement is highly requested to estimate the radiative effects and climate effects of atmospheric...

Aerosols as a source of dissolved black carbon to the ocean.

Nature communications

Bao H, Niggemann J, Luo L, Dittmar T, Kao SJ.
PMID: 28894096
Nat Commun. 2017 Sep 11;8(1):510. doi: 10.1038/s41467-017-00437-3.

Dissolved black carbon (DBC) is the largest known slow-cycling organic carbon pool in the world's oceans. Atmospheric deposition could significantly contribute to the oceanic DBC pool, but respective information is lacking. Here we estimate that, during the dust outbreak...

Showing 1 to 12 of 3866 entries