Search Results - "Hellebust, S."

Gasoline cars produce more carbonaceous particulate matter than modern filter-equipped diesel cars by Platt, S. M., El Haddad, I., Pieber, S. M., Zardini, A. A., Suarez-Bertoa, R., Clairotte, M., Daellenbach, K. R., Huang, R.-J., Slowik, J. G., Hellebust, S., Temime-Roussel, B., Marchand, N., de Gouw, J., Jimenez, J. L., Hayes, P. L., Robinson, A. L., Baltensperger, U., Astorga, C., Prévôt, A. S. H.

“…Carbonaceous particulate matter (PM), comprising black carbon (BC), primary organic aerosol (POA) and secondary organic aerosol (SOA, from atmospheric aging of…”
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Two-stroke scooters are a dominant source of air pollution in many cities by Platt, S.M., Haddad, I.El, Pieber, S.M., Huang, R.-J., Zardini, A.A., Clairotte, M., Suarez-Bertoa, R., Barmet, P., Pfaffenberger, L., Wolf, R., Slowik, J.G., Fuller, S.J., Kalberer, M., Chirico, R., Dommen, J., Astorga, C., Zimmermann, R., Marchand, N., Hellebust, S., Temime-Roussel, B., Baltensperger, U., Prévôt, A.S.H.

“…Fossil fuel-powered vehicles emit significant particulate matter, for example, black carbon and primary organic aerosol, and produce secondary organic aerosol…”
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Source apportionment of PM2.5 in Cork Harbour, Ireland using a combination of single particle mass spectrometry and quantitative semi-continuous measurements by Healy, R M, Hellebust, S, Kourtchev, I, Allanic, A, O'Connor, I P, Bell, J M, Healy, D A, Sodeau, J R, Wenger, J C

“…An aerosol time-of-flight mass spectrometer (ATOFMS) was deployed for the measurement of the size resolved chemical composition of single particles at a site…”
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Portable HEPA filtration successfully augments natural-ventilation-mediated airborne particle clearance in a legacy design hospital ward by Fennelly, M., Hellebust, S., Wenger, J., O'Connor, D., Griffith, G.W., Plant, B.J., Prentice, M.B.

“…As the severe acute respiratory syndrome coronavirus-2 pandemic has proceeded, ventilation has been recognized increasingly as an important tool in infection…”
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Primary emissions and secondary organic aerosol formation from the exhaust of a flex-fuel (ethanol) vehicle by Suarez-Bertoa, R., Zardini, A.A., Platt, S.M., Hellebust, S., Pieber, S.M., El Haddad, I., Temime-Roussel, B., Baltensperger, U., Marchand, N., Prévôt, A.S.H., Astorga, C.

“…Incentives to use biofuels may result in increasing vehicular emissions of compounds detrimental to air quality. Therefore, regulated and unregulated emissions…”
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Effectiveness of a plasma treatment device on microbial air quality in a hospital ward, monitored by culture by Fennelly, M., O'Connor, D.J., Hellebust, S., Murphy, N., Casey, C., Eustace, J., Plant, B.J., Sodeau, J.R., Prentice, M.B.

“…This study analysed the effectiveness of plasma treatment on airborne bacteria and surface counts during a 14-day intervention within a four-bedded bay in an…”
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Near-highway aerosol and gas-phase measurements in a high-diesel environment by DeWitt, H. L, Hellebust, S, Temime-Roussel, B, Ravier, S, Polo, L, Jacob, V, Buisson, C, Charron, A, André, M, Pasquier, A, Besombes, J. L, Jaffrezo, J. L, Wortham, H, Marchand, N

“…Diesel-powered passenger cars currently outnumber gasoline-powered cars in many countries, particularly in Europe. In France, diesel cars represented 61% of…”
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A new methodology to assess the performance and uncertainty of source apportionment models II: The results of two European intercomparison exercises by Belis, C.A., Karagulian, F., Amato, F., Almeida, M., Artaxo, P., Beddows, D.C.S., Bernardoni, V., Bove, M.C., Carbone, S., Cesari, D., Contini, D., Cuccia, E., Diapouli, E., Eleftheriadis, K., Favez, O., El Haddad, I., Harrison, R.M., Hellebust, S., Hovorka, J., Jang, E., Jorquera, H., Kammermeier, T., Karl, M., Lucarelli, F., Mooibroek, D., Nava, S., Nøjgaard, J.K., Paatero, P., Pandolfi, M., Perrone, M.G., Petit, J.E., Pietrodangelo, A., Pokorná, P., Prati, P., Prevot, A.S.H., Quass, U., Querol, X., Saraga, D., Sciare, J., Sfetsos, A., Valli, G., Vecchi, R., Vestenius, M., Yubero, E., Hopke, P.K.

“…The performance and the uncertainty of receptor models (RMs) were assessed in intercomparison exercises employing real-world and synthetic input datasets. To…”
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The performance and the characterization of laser ablation aerosol particle time-of-flight mass spectrometry (LAAP-ToF-MS) by Gemayel, Rachel, Hellebust, Stig, Temime-Roussel, Brice, Hayeck, Nathalie, Van Elteren, Johannes T., Wortham, Henri, Gligorovski, Sasho

“…Hyphenated laser ablation–mass spectrometry instruments have been recognized as useful analytical tools for the detection and chemical characterization of…”
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Sources of ambient concentrations and chemical composition of PM2.5―0.1 in Cork Harbour, Ireland by HELLEBUST, S, ALLANIC, A, O'CONNOR, I. P, JOURDAN, C, HEALY, D, SODEAU, J. R

“…Particulate matter (PM10-2.5 and PM2.5-0.1) has been collected over a period of one year in Cork Harbour, Ireland, using a high-volume cascade impactor and…”
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Partitioning of anionic/nonionic polysaccharides in a segregative system of anionic polyelectrolyte mixtures in aqueous solution: Effects of polymer charge density and ionic strength of solution by Hellebust, S., Blokhus, A. M., Nilsson, S.

“…The partitioning of three polysaccharides, Dextran sulfate (DxS), λ‐Carrageenan (CAR), and Dextran (Dx), and its dependence on polymer charge density and ionic…”
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Influence of Hydrophobic Cosolutes on the Associative/Segregative Phase Separation of Aqueous Cationic Surfactant−Polymer Systems by Nilsson, S, Blokhus, A. M, Hellebust, S, Glomm, W. R

“…The effect of hydrophobic cosolutes on the phase behavior for a cationic surfactant and charged polymer in water has been studied. With a similarly charged…”
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Spatial analysis of PM2.5 using a concentration similarity index applied to air quality sensor networks by Byrne, Rósín, Wenger, John C, Hellebust, Stig

“…Air quality sensor (AQS) networks are useful for mapping PM2.5 (particles with a diameter of 2.5 µm or smaller) in urban environments, but quantitative…”
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Two distinct ship emission profiles for organic-sulfate source apportionment of PM in sulfur emission control areas by Fossum, Kirsten N, Lin, Chunshui, O'Sullivan, Niall, Lei, Lu, Hellebust, Stig, Ceburnis, Darius, Afzal, Aqeel, Tremper, Anja, Green, David, Jain, Srishti, BycenkienÄ, SteigvilÄ, O'Dowd, Colin, Wenger, John, Ovadnevaite, Jurgita

“…Source apportionment quantitatively links pollution to its source but can be difficult to perform in areas like ports where emissions from shipping and other…”
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The impact of traffic on air quality in Ireland: insights from the simultaneous kerbside and suburban monitoring of submicron aerosols by Lin, Chunshui, Ceburnis, Darius, Xu, Wei, Heffernan, Eimear, Hellebust, Stig, Gallagher, John, Huang, Ru-Jin, O'Dowd, Colin, Ovadnevaite, Jurgita

“…To evaluate the impact of traffic on urban air quality, the chemical composition of submicron aerosols (PM1) and sources of organic aerosol (OA) were…”
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Development of an analytical methodology for obtaining quantitative mass concentrations from LAAP-ToF-MS measurements by Gemayel, Rachel, Temime-Roussel, Brice, Hayeck, Nathalie, Gandolfo, Adrien, Hellebust, Stig, Gligorovski, Sasho, Wortham, Henri

“…Laser ablation aerosol particle-time of flight mass spectrometer (LAAP-ToF-MS) measures the size number of particles, and chemical composition of individual…”
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Wintertime aerosol dominated by solid-fuel-burning emissions across Ireland: insight into the spatial and chemical variation in submicron aerosol by Lin, Chunshui, Ceburnis, Darius, Huang, Ru-Jin, Xu, Wei, Spohn, Teresa, Martin, Damien, Buckley, Paul, Wenger, John, Hellebust, Stig, Rinaldi, Matteo, Facchini, Maria Cristina, O'Dowd, Colin, Ovadnevaite, Jurgita

“…To gain insight into the spatial and chemical variation in submicron aerosol, a nationwide characterization of wintertime PM1 was performed using an aerosol…”
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On the use of reference mass spectra for reducing uncertainty in source apportionment of solid-fuel burning in ambient organic aerosol by Lin, Chunshui, Ceburnis, Darius, Trubetskaya, Anna, Xu, Wei, Smith, William, Hellebust, Stig, Wenger, John, O'Dowd, Colin, Ovadnevaite, Jurgita

“…Reference mass spectra are routinely used to facilitate source apportionment of ambient organic aerosol (OA) measured by aerosol mass spectrometers. However,…”
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Investigation of coastal sea-fog formation using the WIBS (wideband integrated bioaerosol sensor) technique by Daly, Shane M., O'Connor, David J., Healy, David A., Hellebust, Stig, Arndt, Jovanna, McGillicuddy, Eoin J., Feeney, Patrick, Quirke, Michael, Wenger, John C., Sodeau, John R.

“…A wideband integrated bioaerosol sensor (WIBS-4) was deployed in Haulbowline Island, Cork Harbour, to detect fluorescence particles in real time during July…”
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Polarity Control in Doped Silicon Junctionless Nanowire Transistor for Sensing Application by Ghosh, S., Echresh, A., Khan, M. B., Bhattacharya, D., Kentsch, U., Prucnal, S., Vardhan, V., Biswas, S., Hellebust, S., Wenger, J., Holmes, J. D., Erbe, A., Georgiev, Y. M.

“…Silicon nanowires have been employed effectively in innovative electronic devices including sensors, solar cells and logic circuitry [1] …”
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