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University of Georgia
1.
Lacke, Matthew C.
Aerosols and associated precipitation patterns in Atlanta.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/24193 
► The role of aerosol concentrations on summer precipitation was examined in Atlanta, GA, for 2003-04. Thursday had the highest average 2.5 µm particulate matter (PM…
(more)
▼ The role of aerosol concentrations on summer precipitation was examined in Atlanta, GA, for 2003-04. Thursday had the highest average 2.5 µm particulate matter (PM 2.5) concentrations at two of three Environmental Protection Agency stations.
Monday and Thursday had the largest area of significantly different precipitation when compared to other days of the week. All but the southeast quadrant of the metropolitan area had a significant difference in precipitation on high versus low aerosol
days. High aerosol days had greater instability (higher average convective available potential energy and lower convective inhibition), and a slightly shallower mixing layer when compared to low aerosol days. Most of metropolitan Atlanta had higher
precipitation amounts on high aerosol days and was significantly different from low aerosol days.
Subjects/Keywords: Aerosols; Particulate Matter; Precipitation; Atlanta
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APA (6th Edition):
Lacke, M. C. (2014). Aerosols and associated precipitation patterns in Atlanta. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/24193
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lacke, Matthew C. “Aerosols and associated precipitation patterns in Atlanta.” 2014. Thesis, University of Georgia. Accessed January 23, 2021.
http://hdl.handle.net/10724/24193.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lacke, Matthew C. “Aerosols and associated precipitation patterns in Atlanta.” 2014. Web. 23 Jan 2021.
Vancouver:
Lacke MC. Aerosols and associated precipitation patterns in Atlanta. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10724/24193.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lacke MC. Aerosols and associated precipitation patterns in Atlanta. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/24193
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
2.
Zamora, Misti E Levy.
Nucleation, Transformation, and Impacts of Atmospheric Aerosols.
Degree: PhD, Atmospheric Sciences, 2015, Texas A&M University
URL: http://hdl.handle.net/1969.1/187453
► Atmospheric aerosols are a key contributor to pollution, adversely affect human health, and can alter global climate. Several questions concerning atmospheric aerosols persist, including: ‘Which…
(more)
▼ Atmospheric aerosols are a key contributor to pollution, adversely affect human health, and can alter global climate. Several questions concerning atmospheric aerosols persist, including: ‘Which atmospheric species are integral for aerosol formation in the atmosphere?’, ‘What happens to aerosols after emission into or formation in the atmosphere?’, ‘Does maternal exposure to aerosols during pregnancy fundamentally alter her offspring?’, and ‘Can we utilize gas phase chemistry models to further our understanding of atmospheric aerosols?’. A series of chamber, observational, and computational studies have been conducted to investigate these scientific questions.
Globally, new particle formation (NPF) events account for more than 50% of the aerosols in the troposphere, but the chemical species and mechanisms responsible for NPF have yet to be fully understood. To explicate the role of organic compounds in NPF, laboratory experiments have been conducted to investigate aerosol nucleation and growth from the photochemical oxidation of biogenic and anthropogenic volatile organic compounds (VOCs). Here we show that the NPF is dependent on the VOC species and that the global pattern of NPF is likely governed by the available VOCs.
A suite of instruments was deployed in Beijing to measure a comprehensive set of aerosol properties in order to elucidate the aerosol formation mechanisms and the evolution of aerosol properties. NPF consistently occurred on clean, windy days, and the high aerosol mass observed during haze events is attributable to the continuous growth from the nucleation-mode particles over multiple days to produce a high concentration of larger particles. Our results reveal that the severe haze in Beijing is likely due to the concentrated aerosol precursor gases and the large-scale meteorological conditions. Model simulations indicate that the persistent high concentrations of NO2 in Beijing and the frequent periods of high aerosol loading leads to elevated HONO levels and sustained oxidizing capacity.
To determine the mechanism through which aerosols influence human health, a series of animal exposure studies have been conducted to investigate the transgenerational effects. In each experiment, Sprague-Dawley rats were continuously exposed between days 0 and 18 of gestation to controlled conditions to represent either clean (~5 µg m^-3) or polluted (~150 µg m^-3) environments. The gestation length, litter size, birth weight, and sex ratio were assessed throughout the animal exposure studies. The preliminary results indicate the development of several organs and the birth weight may be influenced by prenatal exposure to pollutants and the degree of response may also be sex dependent.
Advisors/Committee Members: Zhang, Renyi (advisor), Collins, Don (committee member), Ying, Qi (committee member), Wu, Guoyao (committee member), Madronich, Sasha (committee member).
Subjects/Keywords: Aerosols; Particulate Matter; Atmospheric Chemistry
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APA (6th Edition):
Zamora, M. E. L. (2015). Nucleation, Transformation, and Impacts of Atmospheric Aerosols. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/187453
Chicago Manual of Style (16th Edition):
Zamora, Misti E Levy. “Nucleation, Transformation, and Impacts of Atmospheric Aerosols.” 2015. Doctoral Dissertation, Texas A&M University. Accessed January 23, 2021.
http://hdl.handle.net/1969.1/187453.
MLA Handbook (7th Edition):
Zamora, Misti E Levy. “Nucleation, Transformation, and Impacts of Atmospheric Aerosols.” 2015. Web. 23 Jan 2021.
Vancouver:
Zamora MEL. Nucleation, Transformation, and Impacts of Atmospheric Aerosols. [Internet] [Doctoral dissertation]. Texas A&M University; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1969.1/187453.
Council of Science Editors:
Zamora MEL. Nucleation, Transformation, and Impacts of Atmospheric Aerosols. [Doctoral Dissertation]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/187453
University of KwaZulu-Natal
3.
Gumede, Phiwayinkosi Richmond.
The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality.
Degree: Agrometeorology, 2015, University of KwaZulu-Natal
URL: http://hdl.handle.net/10413/13322
► Currently, land-filling is the main waste disposal method utilized in South Africa. However little is known about the health risk factors among children living near…
(more)
▼ Currently, land-filling is the main waste disposal method utilized in South Africa. However little is known about the health risk factors among children living near the landfill sites. This is a first study that sought to interrogate and determine respiratory health symptoms and outcomes in children aged between 6 and 12 years who reside within a two-kilometre radius of the Bisasar Road landfill site, Durban, South Africa, the largest landfill site in Africa. Durban is situated in the eThekwini Municipality, along the east coast of South Africa in KwaZulu-Natal province. In South Africa, there are no regulations or guidelines in place to stipulate the buffer zone between a community and a landfill site. The study also aimed to determine if there is a correlation between those respiratory health outcomes and the close proximity to the landfill site. Community experiences regarding the landfill site and its health impacts were also interrogated. Various studies undertaken on the impact of waste disposal facilities have focused mainly on the landfill site gas emissions such as methane due to its climate impact and its potential for energy production.
Particulate matter (PM₂․₅) exposure in children residing in the vicinity of the landfill site and the opinions of the adult residents, on the other hand, have neither been extensively investigated nor documented in developing countries, South Africa included. As the study investigated the respiratory health outcomes in children residing within a 2-km radius of Africa’s largest landfill site, it was vital to adopt materials, procedures and data collection methods that would not only provide an overall health reality of the area but enable the researcher to focus on children who are the future of South Africa; that are being groomed and nurtured in this environment. A mixture of the positivist and interpretivist paradigm had to be adopted in this case as were ‘scientific methods’ - where all is ordered, regular and can be objectively investigated, hypotheses tested and utilised. But the social context of information needs interrogating, and also how it is developed and construed by people and the way in which it is influenced by and influences that social setting. The study adopted both qualitative and quantitative methods to explore the impact the landfill site has on children and to ascertain residents’ perceptions of the landfill site. Questionnaires included predefined questions in a predetermined order were administered to participants purposively and randomly selected at the Clare Estate area near the Bisasar Road landfill site. Thus it became almost a case study as it not only tested hypotheses as in an experiment on health outcomes subsequent to the pollution reality of the area. It also gains insight into and generates knowledge from studying this particular instance and that knowledge may be relevant to other situations that will surely develop in this modern industrialised perennially waste-emitting world. Interviews that
focussed more on depth than breadth were…
Advisors/Committee Members: Savage, Michael John. (advisor).
Subjects/Keywords: Agrometeorology.; Particulate matter (PM₂․₅)
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APA (6th Edition):
Gumede, P. R. (2015). The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/13322
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gumede, Phiwayinkosi Richmond. “The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality.” 2015. Thesis, University of KwaZulu-Natal. Accessed January 23, 2021.
http://hdl.handle.net/10413/13322.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gumede, Phiwayinkosi Richmond. “The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality.” 2015. Web. 23 Jan 2021.
Vancouver:
Gumede PR. The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality. [Internet] [Thesis]. University of KwaZulu-Natal; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10413/13322.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gumede PR. The respiratory health effects associated with particulate matter (PM₂․₅) exposure in children residing near a landfill site : a case of eThekwini Municipality. [Thesis]. University of KwaZulu-Natal; 2015. Available from: http://hdl.handle.net/10413/13322
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
4.
Chintapalli, Manikyala Rao.
Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry.
Degree: MS, Chemistry, 2015, University of North Dakota
URL: https://commons.und.edu/theses/1754
► A gas chromatographic-mass spectrometric (GC-MS) method has been developed for the determination of a broad range of aldehydes (including, hydroxylated and aromatic aldehydes) in…
(more)
▼ A gas chromatographic-mass spectrometric (GC-MS) method has been developed for the determination of a broad range of aldehydes (including, hydroxylated and aromatic aldehydes) in
particulate matter (PM). In this method, the aldehydes are derivatized with O-2, 3, 4, 5-pentafluorobenzyl hydroxylamine hydrochloride (PFBHA) using various solvents for extraction and derivatization including acetonitrile, water, methanol, and acetonitrile/dichloromethane/methanol. An ACN/DCM/MeOH mixture with sonication was shown to be optimal as it increased the derivatization efficiency in addition to efficient extraction for all tested aldehydes. The optimal derivatization conditions were determined and then tested on a variety of oxy-PAHs which resulted in a complete derivatization of carboxaldehydes but only incomplete derivatization of quinonic species. Application of the extraction protocol to wood smoke (WS) PM and comparison to the traditional EPA buffer method resulted in higher recoveries (up to 150%) of several aldehydes. This artifact was shown to be due to the presence of organics like syringol and levoglucosan in WS PM at higher concentrations and not be caused by which were not due to completeness/incompleteness of the analyte derivatization. This effect was attributed to a matrix-assisted response enhancement, i.e., loss of analytes upon injection due to its adsorption, which may be masked by organics as blocking agents. Further application of the optimized method to
particulate matter in GC-MS EI and NCI methods resulted in identification of up to 30 compounds. The NCI method proved to be more sensitive, with up to 28 compound detected with LODs in a range of 0.06 µg – 1.47 µg and comparable quantities (mean ± SD) of
aldehydes in all concentrations of WS PM used. By contrast, the EI method was shown to be less sensitive, with only 16 compounds being detected.
Advisors/Committee Members: Alena Kubatova.
Subjects/Keywords: Aldehydes; Particulate Matter; PFBHA
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APA (6th Edition):
Chintapalli, M. R. (2015). Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/1754
Chicago Manual of Style (16th Edition):
Chintapalli, Manikyala Rao. “Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry.” 2015. Masters Thesis, University of North Dakota. Accessed January 23, 2021.
https://commons.und.edu/theses/1754.
MLA Handbook (7th Edition):
Chintapalli, Manikyala Rao. “Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry.” 2015. Web. 23 Jan 2021.
Vancouver:
Chintapalli MR. Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry. [Internet] [Masters thesis]. University of North Dakota; 2015. [cited 2021 Jan 23].
Available from: https://commons.und.edu/theses/1754.
Council of Science Editors:
Chintapalli MR. Determination Of Aldehydes In Particulate Matter Using Gas Chromatography-Mass Spectrometry. [Masters Thesis]. University of North Dakota; 2015. Available from: https://commons.und.edu/theses/1754
University of Edinburgh
5.
Hammonds, Mark David.
Characterisation of carbonaceous particulate matter in Edinburgh.
Degree: PhD, 2012, University of Edinburgh
URL: http://hdl.handle.net/1842/6236
► Airborne particulate matter (PM) has important harmful effects on human health, as well as a number of other important atmospheric effects. Although progress has been…
(more)
▼ Airborne particulate matter (PM) has important harmful effects on human health, as well as a number of other important atmospheric effects. Although progress has been made in understanding the sources and effects of PM, there remains considerable uncertainty on a number of issues, including the nature of a lot of the carbonaceous material, which comprises 30{50% on average of PM mass. This project aims to compare different methods of PM measurement, and contribute understanding to the nature and origin of the carbonaceous fraction of PM. Daily samples of PM10 were collected from three sites in the Edinburgh area using Partisol-Plus 2025 Sequential Air Samplers: 1) Urban Background (20 August 2008 until 21 April 2010); 2) Rural (25 February 2009 until 21 April 2009); and 3) Roadside (10 September 2009 until 21 April 2010). These localities provided PM that was, respectively, representative of: 1) city-wide background air; 2) air at a location distanced from population centres, roads and industrial areas; and 3) air influenced by the emissions associated with traffic. Gravimetric PM10 concentration (µgm-3) was determined for each daily filter sample, after a blank correction to compensate for the relative humidity (RH)-influenced change in filter mass over time. The correction was successful, with good agreement attained between the Partisol and a PM10 Tapered Element Oscillating Microbalance Filter Dynamics Measurement System (TEOM-FDMS) co-located at the Urban Background site. The general levels of PM10 measured in this monitoring campaign indicate that the air in Edinburgh was relatively clean. The main factor causing exceedance of the daily European Union (EU) limit value was shown to be transport of PM10 from areas of mainland Europe. High PM10 concentrations were also strongly associated with calm weather conditions in Edinburgh, which allowed the build-up of particulate pollution over time. Aethalometer-equivalent daily concentrations of black carbon (BC) were determined by measuring the optical reflectance of the PM10 filters from the Partisol samplers. The conversion of reflectance values to BC concentrations relied on a number of correction factors, which may have impacted on the accuracy of the results with time and location. The concentration of BC in Edinburgh was shown to be relatively low, with the daily variation being controlled by local emissions and meteorology. BC as a proportion of PM10 increased with sampling location in the order: Rural < Urban Background < Roadside. Predominantly traffic-related BC concentrations increased during periods of low wind speed and were not greatly influenced by long-range transport of aerosol. Daily water-soluble organic matter (WSOM) concentrations were obtained by aqueous extraction of the filter samples and measurement of the dissolved organic carbon (DOC). About 11% on average of the Edinburgh PM10 was WSOM. The majority of this WSOM seemed to have originated from air masses outside of the city, although there was a minor contribution from urban traffic sources.…
Subjects/Keywords: 577.14; particulate matter; air pollution
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APA (6th Edition):
Hammonds, M. D. (2012). Characterisation of carbonaceous particulate matter in Edinburgh. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/6236
Chicago Manual of Style (16th Edition):
Hammonds, Mark David. “Characterisation of carbonaceous particulate matter in Edinburgh.” 2012. Doctoral Dissertation, University of Edinburgh. Accessed January 23, 2021.
http://hdl.handle.net/1842/6236.
MLA Handbook (7th Edition):
Hammonds, Mark David. “Characterisation of carbonaceous particulate matter in Edinburgh.” 2012. Web. 23 Jan 2021.
Vancouver:
Hammonds MD. Characterisation of carbonaceous particulate matter in Edinburgh. [Internet] [Doctoral dissertation]. University of Edinburgh; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1842/6236.
Council of Science Editors:
Hammonds MD. Characterisation of carbonaceous particulate matter in Edinburgh. [Doctoral Dissertation]. University of Edinburgh; 2012. Available from: http://hdl.handle.net/1842/6236
Delft University of Technology
6.
Noordzij, J. (author).
Dirty cities, fresh schools.
Degree: 2014, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:09dff859-48cc-4ba5-8679-e2d5f1ba1d76
► Schools have developed into institutions with more functions besides solely education. This poses new demands on school buildings. One of them is a good accessibility…
(more)
▼ Schools have developed into institutions with more functions besides solely education. This poses new demands on school buildings. One of them is a good accessibility by car. Therefore, schools could benefit from being placed along roads with big capacities. The obvious counterpart is the risk of health. Above everything else, children should be protected from pollution levels that put their vulnerable health at risk. This graduation project researches how school buildings along big roads can provide healthy and comfortable environments to their occupants.
Architectural Engineering
Architecture
Architecture and The Built Environment
Advisors/Committee Members: Homans, T.C. (mentor), Snijders, A. (mentor), Schnater, F.R. (mentor).
Subjects/Keywords: schools; pollution; noise; particulate matter
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APA (6th Edition):
Noordzij, J. (. (2014). Dirty cities, fresh schools. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:09dff859-48cc-4ba5-8679-e2d5f1ba1d76
Chicago Manual of Style (16th Edition):
Noordzij, J (author). “Dirty cities, fresh schools.” 2014. Masters Thesis, Delft University of Technology. Accessed January 23, 2021.
http://resolver.tudelft.nl/uuid:09dff859-48cc-4ba5-8679-e2d5f1ba1d76.
MLA Handbook (7th Edition):
Noordzij, J (author). “Dirty cities, fresh schools.” 2014. Web. 23 Jan 2021.
Vancouver:
Noordzij J(. Dirty cities, fresh schools. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Jan 23].
Available from: http://resolver.tudelft.nl/uuid:09dff859-48cc-4ba5-8679-e2d5f1ba1d76.
Council of Science Editors:
Noordzij J(. Dirty cities, fresh schools. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:09dff859-48cc-4ba5-8679-e2d5f1ba1d76
7.
Tuet, Wing-Yin.
Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol.
Degree: PhD, Chemical and Biomolecular Engineering, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/59870
► Exposure to atmospheric particulate matter (PM) is a leading global health risk with various proposed mechanisms of action, including the induction of oxidative stress through…
(more)
▼ Exposure to atmospheric
particulate matter (PM) is a leading global health risk with various proposed mechanisms of action, including the induction of oxidative stress through PM-initiated production/release of reactive oxygen and nitrogen species (ROS/RNS). This dissertation explores cellular and acellular measurements of PM-induced oxidative stress through systematic laboratory chamber experiments and ambient field studies. A cell-based assay involving murine alveolar macrophages was developed to measure intracellular ROS/RNS produced as a result of aerosol exposure. The area under the dose-response curve was identified as a robust metric to represent ROS/RNS for comparison with different endpoints. A large ambient study with samples collected from urban and rural sites around the greater Atlanta area (n = 104) was conducted using the optimized assay and significant correlations between ROS/RNS and organic constituents were observed for summer samples, highlighting the potential contribution of organic aerosol, particularly summertime photochemically-driven secondary organic aerosol (SOA). To explore these findings, SOA was generated in a series of laboratory experiments from various biogenic (isoprene, α-pinene, β-caryophyllene) and anthropogenic (pentadecane, m-xylene, naphthalene) precursors under different formation conditions (dry vs. humid, NOx, ammonium sulfate vs. iron sulfate seed particles) to probe their effects on PM toxicity. For chemical oxidative potential as measured by dithiothreitol consumption (OP), precursor identity influenced toxicity significantly, with isoprene and naphthalene SOA having the lowest and highest OP, respectively. Both precursor identity and formation conditions influenced ROS/RNS and cytokine (tumor necrosis factor-α and interleukin-6) production. Several response patterns were identified for SOA precursors whose photooxidation products share similar carbon chain length and functionalities. A significant correlation between ROS/RNS levels and aerosol carbon oxidation state was also observed, which may have significant implications as atmospheric aerosol have an atmospheric lifetime of a week, over which oxidation state increases due to photochemical aging, potentially resulting in more toxic aerosol.
Advisors/Committee Members: Ng, Nga L. (advisor), Champion, Julie A. (committee member), Grosberg, Anna (committee member), Lu, Hang (committee member), Weber, Rodney J. (committee member).
Subjects/Keywords: Particulate matter; Oxidative stress
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APA (6th Edition):
Tuet, W. (2018). Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/59870
Chicago Manual of Style (16th Edition):
Tuet, Wing-Yin. “Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol.” 2018. Doctoral Dissertation, Georgia Tech. Accessed January 23, 2021.
http://hdl.handle.net/1853/59870.
MLA Handbook (7th Edition):
Tuet, Wing-Yin. “Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol.” 2018. Web. 23 Jan 2021.
Vancouver:
Tuet W. Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1853/59870.
Council of Science Editors:
Tuet W. Cellular and acellular assays for measuring oxidative stress induced by ambient and laboratory-generated aerosol. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/59870
Georgia Tech
8.
Ivey, Cesunica Elizabeth.
Integration of air quality data for improved estimates of PM2.5 source impacts.
Degree: PhD, Civil and Environmental Engineering, 2016, Georgia Tech
URL: http://hdl.handle.net/1853/55643
► Human exposure to air pollution is a known risk factor for the development or worsening of diseases and increased mortality. Traditionally, air quality data availability…
(more)
▼ Human exposure to air pollution is a known risk factor for the development or worsening of diseases and increased mortality. Traditionally, air quality data availability for health analyses are spatially and temporally sparse, which limits the capabilities of the health studies and introduces bias into methods and results. This dissertation is a presentation of novel data assimilation methods for air quality modeling of PM2.5 source impacts for use in epidemiologic analyses. The presented methods improve spatially and temporally resolved source impact estimates and highlight uncertainties in presently used modeling techniques. The methods developed include a novel hybrid source apportionment method that uses observed and modeled data to generate spatially and temporally resolved source impacts, where some sources are commonly unresolved by traditional methods. The hybrid approach employs a nonlinear optimization method to generate adjustment factors that, when applied to CMAQ-DDM data, revise the original source impacts to better reflect observed concentrations. Additionally, a novel method for optimizing PM2.5 source profiles is presented which uses observed concentrations to generate a revised profile that reflects local conditions. Revised PM2.5 source profiles are generated for monitored locations across the United States, and the spatio-temporal characteristics of the revised profiles are analyzed. Further, a method is developed to address the modeling uncertainties associated with estimating concentrations and source impacts on secondary PM2.5. The method improves the estimates of sulfate, nitrate, ammonium, and secondary organic carbon concentrations, while providing an estimate of numerical bias in source impacts on the species. Overall, the methods and results presented in this dissertation provide insight on the greatest impacting PM2.5 sources in the U.S., such as vehicle emissions, coal combustion, biomass burning, and agricultural/livestock activities. The works presented here also provide insight on the biases present in source apportionment and PM2.5 modeling techniques. The methods and results presented offer benefits for scientists interested in policy and health applications, such as establishing NAAQS attainment for municipalities and further exploring links between human exposure to PM2.5 and adverse health effects.
Advisors/Committee Members: Russell, Armistead G. (advisor), Mulholland, James A. (advisor), Chen, Yongsheng (advisor), Odman, Talat M. (advisor), Weber, Rodney J. (advisor), Chang, Howard (advisor).
Subjects/Keywords: Air quality modeling; Particulate matter
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APA ·
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APA (6th Edition):
Ivey, C. E. (2016). Integration of air quality data for improved estimates of PM2.5 source impacts. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/55643
Chicago Manual of Style (16th Edition):
Ivey, Cesunica Elizabeth. “Integration of air quality data for improved estimates of PM2.5 source impacts.” 2016. Doctoral Dissertation, Georgia Tech. Accessed January 23, 2021.
http://hdl.handle.net/1853/55643.
MLA Handbook (7th Edition):
Ivey, Cesunica Elizabeth. “Integration of air quality data for improved estimates of PM2.5 source impacts.” 2016. Web. 23 Jan 2021.
Vancouver:
Ivey CE. Integration of air quality data for improved estimates of PM2.5 source impacts. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1853/55643.
Council of Science Editors:
Ivey CE. Integration of air quality data for improved estimates of PM2.5 source impacts. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/55643
Laurentian University
9.
Fraleigh, Nya L.
Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
.
Degree: 2015, Laurentian University
URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2530
► The incidence of allergic disease has risen dramatically over the last century. This increase cannot simply be attributed to genetics, and so environmental contributions to…
(more)
▼ The incidence of allergic disease has risen dramatically over the last century. This increase cannot simply be attributed to genetics, and so environmental contributions to allergic disease must be considered. Airborne particulate matter is recognized as a contributing factor in the initiation and exacerbation of allergic respiratory diseases due to its ability to act as an adjuvant and irritant. Particulate matter is heterogeneous in composition, and different components contribute to its adjuvant effects, including metals. This thesis investigates whether metals contained in Sudbury Particulate Matter (SPaM) are potential immunomodulators. We investigated the ability of metals in SPaM to influence inflammation both in vivo and in vitro. We demonstrate that the metals are able to alter the inflammatory profile after physiologically relevant exposure levels, suggesting that some of the metals present in SPaM are immunomodulatory in nature and may influence allergic disease.
Key Words
Subjects/Keywords: Particulate matter;
Inhalation intolerance;
Sudbury Particulate Matter;
Nickel;
Copper;
Estrogen
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APA (6th Edition):
Fraleigh, N. L. (2015). Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
. (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2530
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fraleigh, Nya L. “Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
.” 2015. Thesis, Laurentian University. Accessed January 23, 2021.
https://zone.biblio.laurentian.ca/dspace/handle/10219/2530.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fraleigh, Nya L. “Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
.” 2015. Web. 23 Jan 2021.
Vancouver:
Fraleigh NL. Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
. [Internet] [Thesis]. Laurentian University; 2015. [cited 2021 Jan 23].
Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2530.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fraleigh NL. Investigating the immunomodulatory potential of metals present in Sudbury Particulate Matter (SPaM)
. [Thesis]. Laurentian University; 2015. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2530
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
10.
Zuck, Nicole A.
The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf.
Degree: MS, Oceanography, 2014, Texas A&M University
URL: http://hdl.handle.net/1969.1/153667
► The Mississippi-Atchafalaya river system discharges into the northern Gulf of Mexico and peaks during the spring freshet bringing high levels of nutrients that spur eutrophication…
(more)
▼ The Mississippi-Atchafalaya river system discharges into the northern Gulf of Mexico and peaks during the spring freshet bringing high levels of nutrients that spur eutrophication in surface waters, often resulting in hypoxic (dissolved oxygen concentrations less than 1.4 mL/L) sub-pycnocline conditions. Hypoxia is generally manifest seasonally along the Louisiana coast over the shelf. In summer 2011, high rainfall in the Mississippi-Atchafalaya watershed caused high discharge into the northern Gulf of Mexico. In summer 2012 drought conditions in the watershed significantly reduced the discharge. Summer 2013 conditions returned to the climatologic average river discharge. Discrete samples were collected and continuous measurements were made via an onboard surface-water flow-through system, CTD casts, and by an undulating towed vehicle. Total
particulate matter and
particulate organic carbon samples were obtained from Niskin bottles on CTD casts. Samples were also taken to measure dissolved oxygen concentration and nutrients along with other hydrographic parameters. Water-column
particulate matter and
particulate organic carbon were analyzed to investigate the relationship between hypoxia and the composition of the
particulate matter along the Texas-Louisiana shelf during different discharge rates in summer 2011 (for C:N of
particulate matter), 2012 and 2013 for a larger suite of particle composition and relationship to hydrographic conditions of the Mississippi-Atchafalaya river system. The goal of this research is to determine if a statistically significant relationship is manifest, between shelf hypoxia and total
particulate matter, as well as between
particulate organic carbon and hypoxia, during periods of different river discharge (i.e. average, flood, or drought conditions). Correlations were identified between some variables, but no direct relationship between
particulate matter and hypoxia was observed. There were however, some statistically significant changes in several parameters between summer 2013 and summer 2013.
Advisors/Committee Members: Gardner, Wilford (advisor), Richardson, Mary Jo (advisor), DiMarco, Steven (committee member).
Subjects/Keywords: hypoxia; shelf; Texas-Louisiana; particulate matter; PM; particulate organic carbon; POC
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zuck, N. A. (2014). The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153667
Chicago Manual of Style (16th Edition):
Zuck, Nicole A. “The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf.” 2014. Masters Thesis, Texas A&M University. Accessed January 23, 2021.
http://hdl.handle.net/1969.1/153667.
MLA Handbook (7th Edition):
Zuck, Nicole A. “The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf.” 2014. Web. 23 Jan 2021.
Vancouver:
Zuck NA. The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1969.1/153667.
Council of Science Editors:
Zuck NA. The Relationships of Particulate Matter and Particulate Organic Carbon with Hypoxic Conditions Along the Texas-Louisiana Shelf. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153667
University of Toronto
11.
Ketterer, Justin.
Effects of Biodiesel Fuelling on Diesel Particulate Matter.
Degree: 2010, University of Toronto
URL: http://hdl.handle.net/1807/25725
► Diesel particulate matter (PM) produced from Ultra Low Sulfur Diesel (ULSD), Soy-derived B20 and Animal fat-derived B20 was collected at two engine operating conditions. Gravimetric…
(more)
▼ Diesel particulate matter (PM) produced from Ultra Low Sulfur Diesel (ULSD), Soy-derived
B20 and Animal fat-derived B20 was collected at two engine operating conditions.
Gravimetric analysis showed the PM emissions to depend on both fuel and engine operating
condition. B20 fuels exhibited higher PM emissions at low load conditions, but lower PM
emissions under high load conditions. The differences between the operating conditions
were less significant for B20 fuels than for ULSD. Elemental Carbon analysis revealed the
B20 PM to contain greater proportions of organic carbon, which may improve diesel
particulate filter (DPF) regeneration. Finally, TEM images showed considerable differences
between ULSD and B20 soot at low engine loads. The B20 soot displayed a more disordered
arrangement of graphene layers. At higher loads, the differences are subtle, but the B20 PM still
displayed a more amorphous structure. There was little difference between the Soy and
Animal fat-derived B20 soot.
MAST
Advisors/Committee Members: Wallace, James S., Evans, Greg J., Mechanical and Industrial Engineering.
Subjects/Keywords: Biodiesel; Biofuels; Particulate Matter; Diesel; Diesel Particulate Filter; Microstructure; Regeneration; 0548
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APA (6th Edition):
Ketterer, J. (2010). Effects of Biodiesel Fuelling on Diesel Particulate Matter. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/25725
Chicago Manual of Style (16th Edition):
Ketterer, Justin. “Effects of Biodiesel Fuelling on Diesel Particulate Matter.” 2010. Masters Thesis, University of Toronto. Accessed January 23, 2021.
http://hdl.handle.net/1807/25725.
MLA Handbook (7th Edition):
Ketterer, Justin. “Effects of Biodiesel Fuelling on Diesel Particulate Matter.” 2010. Web. 23 Jan 2021.
Vancouver:
Ketterer J. Effects of Biodiesel Fuelling on Diesel Particulate Matter. [Internet] [Masters thesis]. University of Toronto; 2010. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1807/25725.
Council of Science Editors:
Ketterer J. Effects of Biodiesel Fuelling on Diesel Particulate Matter. [Masters Thesis]. University of Toronto; 2010. Available from: http://hdl.handle.net/1807/25725
University of Houston
12.
Yu, Mengting 1986-.
Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter.
Degree: PhD, Chemical Engineering, 2013, University of Houston
URL: http://hdl.handle.net/10657/1188
► Diesel engines are widely used because of their high efficiency and low “greenhouse gas” emission. The particulate matter (PM) emitted by a diesel engine is…
(more)
▼ Diesel engines are widely used because of their high efficiency and low “greenhouse gas” emission. The
particulate matter (PM) emitted by a diesel engine is collected and then burned in a diesel
particulate filter (DPF). Analysis and modeling works have been done in this research to provide insight on optimization of the DPF design and operating conditions to achieve low pressure drop across the filter to decrease fuel consumption and low peak temperature during regeneration to avoid filter melting, cracking, and/or catalyst deactivation.
Limiting models of the 1-D two-channel DPF model are analyzed. Analytical predictions and physical insight on the filtration velocity, pressure drop, heat transfer, light-off and regeneration in a DPF are obtained. The hydraulic analysis enables an efficient optimization of the DPF that lead to a more uniform PM deposition profile and a decrease of the pressure drop. The heat transfer, light-off and regeneration analysis enable estimations of the DPF heat-up time, the speed and width of the temperature front, the light-off temperature and time, and the peak regeneration temperature. New DPF regeneration procedures are proposed to limit the maximum local temperature rise.
In various cases a DPF is connected by a wide-angled cone (diffuser) to the engine exhaust pipe. A 2-D axisymmetric PM deposition and regeneration model is developed to investigate the impact of the inlet cone on the deposition rate and the regeneration temperature as well as on the transient inlet velocity distribution among the various DPF channels. The highest regeneration temperature and thermal stress when using an inlet cone may be quite higher than when it is absent.
A major technological challenge in the regeneration of the ceramic cordierite filter is that a sudden decrease of the engine load, referred to as Drop to Idle (DTI), may create a transient temperature peak much higher than under either the initial or final stationary feed conditions. This excessive transient temperature rise may cause local melting or cracking of the ceramic filter. Suggestions on how to limit the peak temperature rise following a DTI are provided through numerous simulations of the 1-D and 2-D DPF regeneration models.
Advisors/Committee Members: Luss, Dan (advisor), Balakotaiah, Vemuri (advisor), Harold, Michael P. (committee member), Franchek, Matthew A. (committee member), Grigoriadis, Karolos M. (committee member).
Subjects/Keywords: Diesel Particulate Filter; Particulate Matter; Regeneration; Filtration; Modeling; Analysis
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yu, M. 1. (2013). Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/1188
Chicago Manual of Style (16th Edition):
Yu, Mengting 1986-. “Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter.” 2013. Doctoral Dissertation, University of Houston. Accessed January 23, 2021.
http://hdl.handle.net/10657/1188.
MLA Handbook (7th Edition):
Yu, Mengting 1986-. “Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter.” 2013. Web. 23 Jan 2021.
Vancouver:
Yu M1. Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter. [Internet] [Doctoral dissertation]. University of Houston; 2013. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10657/1188.
Council of Science Editors:
Yu M1. Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter. [Doctoral Dissertation]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/1188
Brno University of Technology
13.
Dráb, Adam.
Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/15843
This work was elaborated for basic survey about emissions in exhaust gases of motor vehicles, and its allowable quantity. It focuses on methods relative to reduction of particulates matter.
Advisors/Committee Members: Dundálek, Radim (advisor), Svída, David (referee).Subjects/Keywords: Emise; pevné částice; filtr pevných částic.; Emission; particulate matter; particulate trap.
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APA (6th Edition):
Dráb, A. (2019). Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/15843
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dráb, Adam. “Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases.” 2019. Thesis, Brno University of Technology. Accessed January 23, 2021.
http://hdl.handle.net/11012/15843.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dráb, Adam. “Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases.” 2019. Web. 23 Jan 2021.
Vancouver:
Dráb A. Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11012/15843.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dráb A. Redukce pevných částic ve výfukových plynech: Particulate Matter Reduction in Exhaust Gases. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/15843
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Nova
14.
Gusmão, Catarina Pacheco Varela.
How does household energy consumption contribute to PM10 emissions?.
Degree: 2012, Universidade Nova
URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/9510
► A Work Project, presented as part of the requirements for the Award of a Masters Degree in Economics from the NOVA – School of Business…
(more)
▼ A Work Project, presented as part of the requirements for the Award of a Masters Degree in Economics from the NOVA – School of Business and Economics
Particle Pollution (PM) is a major problem in urban environments. There is serious health risks associated with exposure to PM. In addition, particulate matter also contributes to greenhouse effects and global warming. PM originates mainly from fuel combustion. In this paper, we attempt to study household energy use contributions to experienced levels of PM concentrations. We find that there is a strong positive association between household gasoline consumption and urban air pollution. Residential natural gas use is also associated with poor air quality.
Advisors/Committee Members: Sá, Maria Antonieta Cunha e, Franco, Sofia.
Subjects/Keywords: Particulate matter; Household energy consumption; Urban planning
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APA (6th Edition):
Gusmão, C. P. V. (2012). How does household energy consumption contribute to PM10 emissions?. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/9510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gusmão, Catarina Pacheco Varela. “How does household energy consumption contribute to PM10 emissions?.” 2012. Thesis, Universidade Nova. Accessed January 23, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/9510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gusmão, Catarina Pacheco Varela. “How does household energy consumption contribute to PM10 emissions?.” 2012. Web. 23 Jan 2021.
Vancouver:
Gusmão CPV. How does household energy consumption contribute to PM10 emissions?. [Internet] [Thesis]. Universidade Nova; 2012. [cited 2021 Jan 23].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/9510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gusmão CPV. How does household energy consumption contribute to PM10 emissions?. [Thesis]. Universidade Nova; 2012. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/9510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universiteit Utrecht
15.
Bisong, N.O.J.
Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM).
Degree: 2012, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/240776
► This thesis outlines the health effects of air pollutants such as NO2 and PM. They involve a variety of diseases like asthma, heart disease, lung…
(more)
▼ This thesis outlines the health effects of air pollutants such as NO2 and PM. They involve a variety of diseases like asthma, heart disease, lung disease, and allergies. The pollutants are from various sources, including the combustion of fossil fuel from motor vehicles, and other dust-generating processes, such as construction and demolition. Certain individuals, such as asthmatics, people with compromised immunity, etc, are included in the risk groups for diseases caused by NO2 and PM.
Advisors/Committee Members: Hoek, G., Beelen, R.M.J..
Subjects/Keywords: Health effects; Nitrogen dioxide; Particulate matter
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APA (6th Edition):
Bisong, N. O. J. (2012). Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM). (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/240776
Chicago Manual of Style (16th Edition):
Bisong, N O J. “Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM).” 2012. Masters Thesis, Universiteit Utrecht. Accessed January 23, 2021.
http://dspace.library.uu.nl:8080/handle/1874/240776.
MLA Handbook (7th Edition):
Bisong, N O J. “Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM).” 2012. Web. 23 Jan 2021.
Vancouver:
Bisong NOJ. Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM). [Internet] [Masters thesis]. Universiteit Utrecht; 2012. [cited 2021 Jan 23].
Available from: http://dspace.library.uu.nl:8080/handle/1874/240776.
Council of Science Editors:
Bisong NOJ. Health Effects of Nitrogen Dioxide (NO2) and Particulate Matter (PM). [Masters Thesis]. Universiteit Utrecht; 2012. Available from: http://dspace.library.uu.nl:8080/handle/1874/240776
McMaster University
16.
Adams, Matthew.
ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING.
Degree: PhD, 2015, McMaster University
URL: http://hdl.handle.net/11375/18032
► Air pollution is highly variable in both space and time, which presents many challenges to researchers when they wish to model concentrations. The modelling of…
(more)
▼ Air pollution is highly variable in both space and time, which presents many challenges to researchers when they wish to model concentrations. The modelling of air pollution is necessary for a number of reasons, which include the determination of human health effects, providing warning of health risks, and to understand general ecosystem health. In this thesis, modelling of air pollution through both space and time has been explored, with a focus on improving models that can be used to assign air pollution exposure. The techniques presented in this thesis have leveraged the ability of mobile monitoring units to collect air pollution concentration data multiple locations throughout a study period. First, we explore the use of combining mobile air pollution monitoring data with traditional fixed location monitoring. We find that the mobile data is able to provide insight into changes in spatial pattern between two temporal periods that could not be identified solely with the fixed location monitors, which demonstrates value in this monitoring approach that can be built upon with refinement of techniques. Second, we present a method to determine the amount of classical error that will be introduced when a long-term mean concentration is calculated from a discontinuous time-series dataset, which are the type of datasets collected by mobile air pollution monitoring. Third, we merge mobile and stationary air pollution monitoring data, along with meteorological, transportation, and land use information to model the hourly air pollution field using neural network models. The models developed allowed for the assignment of air pollution exposure incorporating human activity patterns. Also, they can be used to provide a spatially refined air quality health index. Lastly, we demonstrate exposure assignment that incorporates human activity patterns to calculate the dose exposure for students during their trips to school.
This work commences with a demonstration of the basic utility of mobile air pollution monitoring data, which is to increase the number of monitored locations. Building on that utility of mobile technology, a technique was developed to estimate the error when mobile units are used for long-term estimates, similar to stationary monitoring units; and we were able to provide guiding principles for mobile monitoring data collection. Furthering our objective, to better understand the value of mobile data in a fully integrated monitoring network, we utilized both mobile and stationary data collection techniques together, in a single model, to produce accurate estimates of an air pollution field on an hourly basis. Finally, the research culminates with the demonstration of how mobile monitoring can be used for activity based air pollution exposure estimates, which was shown with a case-study of students’ trips between home and school. Overall, the chapters in this thesis work toward a better understanding of how to incorporate mobile monitoring data into air pollution assessment studies.
Thesis
Doctor of…
Advisors/Committee Members: Kanaroglou, Pavlos, School of Geography and Geology.
Subjects/Keywords: Air Pollution; Spatial Analysis; Particulate Matter
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APA (6th Edition):
Adams, M. (2015). ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/18032
Chicago Manual of Style (16th Edition):
Adams, Matthew. “ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING.” 2015. Doctoral Dissertation, McMaster University. Accessed January 23, 2021.
http://hdl.handle.net/11375/18032.
MLA Handbook (7th Edition):
Adams, Matthew. “ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING.” 2015. Web. 23 Jan 2021.
Vancouver:
Adams M. ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING. [Internet] [Doctoral dissertation]. McMaster University; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11375/18032.
Council of Science Editors:
Adams M. ADVANCING THE USE OF MOBILE MONITORING DATA FOR AIR POLLUTION MODELLING. [Doctoral Dissertation]. McMaster University; 2015. Available from: http://hdl.handle.net/11375/18032
North Carolina State University
17.
Wang, Binyu.
Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States.
Degree: MS, Marine, Earth and Atmospheric Sciences, 2003, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/404
► Particulate matter in the atmosphere with aerodynamic diameter 2.5 micrometer or less (PM[subscript 2.5]) has been studied extensively due to its impact on human health,…
(more)
▼ Particulate matter in the atmosphere with aerodynamic diameter 2.5 micrometer or less (PM[subscript 2.5]) has been studied extensively due to its impact on human health, climate, and other environmental effects. PM[subscript 2.5]) in the southeast US as a whole and particularly in North Carolina (NC) are the focus of this research. The main body of this study includes two parts. The first part focuses on regional i.e. Southeast U.S. PM[subscript 2.5]) analysis consisting of two urban inland sites including locations N.Birmingham, AL (BHM) and Jefferson, GA (JST); two urban coastal sites viz., Gulfport, MS (GFP), Pensacola and FL (PNS); and three rural sites including Yorkville, GA (YRK), Centreville, AL (CTR), and Oak Grove, MS (OAK) (Chapter 2). The second part focuses on North Carolina counties consisting of three urban sites and two rural/agriculture sites in NC. The three urban N.C. sites are located in Forsyth County, Mecklenburg County, and Wake County, respectively; and the two rural/agriculture sites are located in Lenoir County and Caswell County, respectively (Chapter 3).
The analysis of data and results indicate that the annual National Ambient Air Quality Standard (NAAQS) for PM[subscript 2.5]) (annual standard: 15 mg/m³) is exceeded in all of urban inland areas and one agriculture site which is surrounded by several power plants, but the annual average of PM[subscript 2.5]) is less than the annual standard at all of the other agricultural sites and urban coastal sites. High annual average concentrations are dominated by elevated values during summer. The 24-hour standard (65 mg/m³) for PM[subscript 2.5]) is not exceeded at any of the urban and/or agriculture sites.
In the first part, analysis of chemical species revealed that yearly average fractions of organic
matter (OM) with yearly average 4.26 <font mg/m³, sulfate (SO₄²⁻) with yearly average 4.23 mg/m³, ammonium (NH₄⁺) with yearly average 1.89 mg/m³ and nitrate (NO₃⁻) with yearly average 0.67 mg/m³, elemental carbon (EC) with yearly average 1.04 mg/m³ to total PM[subscript 2.5] range between 28-33%, 27-37%, 11-19%, and 3-7%, 5-12% respectively. In the second part, OM (47-50%) with yearly average 7.22 mg/m³, SO₄²⁻ (27-32%) with yearly average 4.63 mg/m³ and NH₄⁺ (9-11%) with yearly average 1.54 mg/m³, NO₃⁻ (5-7%) with yearly average 1.04 mg/m³ and EC (1-4%) with yearly average 0.51 mg/m³ dominate the identifiable components at all sites. Difference in measured fractions of organic carbon
matter between the two parts may be partly accounted by different carbon measurement technologies used. Total PM[subscript 2.5]) mass concentrations are found higher during summer, suggesting that warm conditions favor the formation of secondary aerosol components such as sulfate and organic
matter. The equivalent ratio of NH₄⁺ to SO₄²⁻ equals or is less than 1, suggesting that in most areas in…
Advisors/Committee Members: VINEY P. ANEJA, Committee Chair (advisor).
Subjects/Keywords: fine particulate matter
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APA (6th Edition):
Wang, B. (2003). Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/404
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Binyu. “Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States.” 2003. Thesis, North Carolina State University. Accessed January 23, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/404.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Binyu. “Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States.” 2003. Web. 23 Jan 2021.
Vancouver:
Wang B. Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States. [Internet] [Thesis]. North Carolina State University; 2003. [cited 2021 Jan 23].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/404.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang B. Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States. [Thesis]. North Carolina State University; 2003. Available from: http://www.lib.ncsu.edu/resolver/1840.16/404
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Victoria University of Wellington
18.
Ancelet, Travis.
Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport.
Degree: 2012, Victoria University of Wellington
URL: http://hdl.handle.net/10063/2526
► During the winters of 2010 and 2011, three intensive particulate matter (PM) monitoring campaigns were undertaken in Masterton, Alexandra and Nelson, New Zealand. The goal…
(more)
▼ During the winters of 2010 and 2011, three intensive
particulate matter (PM) monitoring campaigns were undertaken in Masterton, Alexandra and Nelson, New Zealand. The goal of these campaigns was, for the first time, to identify the sources and factors contributing to elevated PM concentrations on an hourly time-scale. In each location, hourly coarse (PM₁₀-₂.₅; particles with aerodynamic diameters 2.5 μm < d < 10 μm) and fine (PM₂.₅; particles with aerodynamic diameters < 2.5 μm) samples, PM₁₀ (particles with aerodynamic diameters < 10 μm, incorporating the coarse and fine fractions) concentrations and meteorological variables were collected from a number of sites. Using elemental concentrations determined from ion beam analysis and black carbon concentrations determined from light reflection for each hourly sample, PM sources and their contributions on an hourly time-scale were identified using positive matrix factorization (PMF).
In Masterton, where two sampling sites were employed, PM₁₀ concentrations displayed distinct diurnal cycles, with peak concentrations occurring in the evening (7 pm–midnight) and in the morning (7–9 am). Four PM sources were identified (biomass burning, marine aerosol, crustal
matter and vehicles) at each of the sites and biomass burning was identified as the most dominant source of PM₁₀ during both the evening and morning. One of the sites experienced consistently higher PM₁₀ concentrations and katabatic flows across Masterton were identified to be the main contributor to this phenomenon.
In Alexandra and Nelson, three sampling sites on a horizontal transect (upwind, central and downwind of the general katabatic flow pathway) and a fourth site located centrally, but at a height of 26 m, were incorporated in a novel study design. Each of the sites in Alexandra and Nelson also showed diurnal patterns in PM₁₀ concentrations. The central site in Alexandra experienced consistently higher PM₁₀ concentrations and four PM₁₀ sources were identified at each of the sites (biomass burning, marine aerosol, vehicles and crustal
matter). Biomass burning was identified as the main source of PM₁₀ throughout the day at each of the sites. The convergence of numerous katabatic flows was identified as the contributing factor to the elevated PM₁₀ concentrations measured at the central site.
In Nelson, five PM sources were identified at each of the sites (biomass burning, vehicles, marine aerosol, shipping sulfate and crustal
matter) and biomass burning was identified as the dominant source of PM₁₀ throughout the day. Katabatic flows were also identified to play an important role in PM₁₀ transport.
Analyses of source-specific (wood combustion and vehicles) PM samples was also undertaken, and the results of these analyses are included in this thesis.
Advisors/Committee Members: Weatherburn, David, Davy, Perry.
Subjects/Keywords: Particulate matter; Source apportionment; Air quality
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APA (6th Edition):
Ancelet, T. (2012). Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2526
Chicago Manual of Style (16th Edition):
Ancelet, Travis. “Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport.” 2012. Doctoral Dissertation, Victoria University of Wellington. Accessed January 23, 2021.
http://hdl.handle.net/10063/2526.
MLA Handbook (7th Edition):
Ancelet, Travis. “Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport.” 2012. Web. 23 Jan 2021.
Vancouver:
Ancelet T. Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10063/2526.
Council of Science Editors:
Ancelet T. Air Particulate Matter in Pollluted New Zealand Urban Environments: Sources, Patterns and Transport. [Doctoral Dissertation]. Victoria University of Wellington; 2012. Available from: http://hdl.handle.net/10063/2526
University of Illinois – Chicago
19.
Mahdavipour, Omid.
MEMS and Air-Microfluidic Solutions for Aerosol Monitoring.
Degree: 2018, University of Illinois – Chicago
URL: http://hdl.handle.net/10027/23314
► Aerosols are a suspension of solid or liquid particles in a gas (most commonly air). They affect occupational hygiene, human health, climate and many other…
(more)
▼ Aerosols are a suspension of solid or liquid particles in a gas (most commonly air). They affect occupational hygiene, human health, climate and many other aspects of our lives. Depending on their particle size and composition they exhibit different behavior and properties. MEMS and Air-Microfluidics platforms readily offer multidisciplinary tools, needed for aerosol manipulation and detection. In this thesis, we offer solutions for improving effective monitoring of the aerosols across different size ranges.
First, we present new theory (extension of Bouguer-Beer-Lambert Law), designs, and experimental results of a novel opto-dielectrometric sensor that can, in real-time, measure the total incombustible content (TIC) of dust deposited in underground coal mines. TIC is the ratio between the incombustible content of deposited dust divided by total mass of all deposited dust and must be maintained below certain levels to reduce the risk of propagating an explosion in an underground mine. The sensor described in this thesis uses a combination of optical sensors and dielectrometric spectrometry to evaluate the TIC content of the continuously deposited dust-stack.
The second part of this thesis presents the design, fabrication and experimental results for a novel air-microfluidic lab-on-a-chip sensor, which measures the mass concentration of the fine airborne
particulate matter (PM). The sensor detects PM with the aerodynamic diameter (AD) of less than 2.5 μm (PM2.5) (fine PM) by measuring the deposited PM on a mass-sensing resonator. This novel sensor operates at flow-rates two orders of magnitude lower than the closest comparable devices. We also characterize the collection efficiency of the microfabricated virtual impactor (VI) by utilizing a novel opto-gravimetric investigation method.
In addition, we present two effective methods for improving the functionality of the MEMS PM2.5 sensor by focusing the PM toward the sensing component region of the PM sensor. A novel microfabricated groove-induced envelope flow air-microfluidic PM focusing system (GRIP) is presented. In this system, horizontal focusing is achieved by enveloping the main flow using clean sheath flow from the sides of the microchannels. To extend the focusing to the vertical direction, grooved structures on top and bottom of microchannels are fabricated using a novel fabrication technique that is compatible with the DRIE fabrication process of other air-microfluidics PM sensors, making it easier to integrate these two components into small air-microfluidic circuits. In the optical version of this concentrator, a cylindrical confocal mirror cavity is designed to engineer the optical intensity profile needed to generate optical gradient force to propel the particles toward the center of the microchannels. Experimental results confirm the efficiency of these methods for focusing particles in air-microfluidic channels, enabling increased sensitivity and elimination of wall losses in future MEMS PM sensors.
Advisors/Committee Members: Paprotny, Igor (advisor), Stroscio, Micheal (committee member), Metlushko, Vitali (committee member), Azadmehr, Mehdi (committee member), Hunt, Sherri (committee member), Paprotny, Igor (chair).
Subjects/Keywords: MEMS; Microfluidics; Aerosols; Particulate Matter; Sensors; WSN
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APA (6th Edition):
Mahdavipour, O. (2018). MEMS and Air-Microfluidic Solutions for Aerosol Monitoring. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/23314
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mahdavipour, Omid. “MEMS and Air-Microfluidic Solutions for Aerosol Monitoring.” 2018. Thesis, University of Illinois – Chicago. Accessed January 23, 2021.
http://hdl.handle.net/10027/23314.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mahdavipour, Omid. “MEMS and Air-Microfluidic Solutions for Aerosol Monitoring.” 2018. Web. 23 Jan 2021.
Vancouver:
Mahdavipour O. MEMS and Air-Microfluidic Solutions for Aerosol Monitoring. [Internet] [Thesis]. University of Illinois – Chicago; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10027/23314.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mahdavipour O. MEMS and Air-Microfluidic Solutions for Aerosol Monitoring. [Thesis]. University of Illinois – Chicago; 2018. Available from: http://hdl.handle.net/10027/23314
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Baylor University
20.
Stephensen, Marie, 1992-.
Atmospheric concentrations of organophosphate esters in Delhi, India.
Degree: MS, Baylor University. Dept. of Environmental Science., 2018, Baylor University
URL: http://hdl.handle.net/2104/10394
► The rise of organophosphate esters (OPEs) as ubiquitous global air pollutants is in part associated with their high-production volume, physical and chemical properties, and heavy…
(more)
▼ The rise of organophosphate esters (OPEs) as ubiquitous global air pollutants is in part associated with their high-production volume, physical and chemical properties, and heavy use in consumer products, including many electronics. The current study investigates the composition and seasonal variability of atmospheric OPEs in Delhi, India. Atmospheric PM2.5 (
particulate matter with an aerodynamic diameter ≤ 2.5 microns) samples were collected from April to November 2009 in downtown Delhi. PM2.5 samples were extracted using pressurized liquid extraction and the extracts were analyzed for twelve OPEs, including TPhP, using gas chromatography-mass spectrometry. The sum of atmospheric OPE concentrations ranged from 2.71 to 61.4 ng m^-3 abd were up ~600 times that of concentrations reported in the US. Findings from a study were similar to those reported from e-waste recycling areas in Pakistan, where TPhP was the dominant OPE. This may suggest that e-waste recycling is a major source of atmospheric OPEs in Delhi.
Advisors/Committee Members: Usenko, Sascha. (advisor).
Subjects/Keywords: Delhi. India. Particulate Matter. Organophosphate Esters.
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APA (6th Edition):
Stephensen, Marie, 1. (2018). Atmospheric concentrations of organophosphate esters in Delhi, India. (Masters Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/10394
Chicago Manual of Style (16th Edition):
Stephensen, Marie, 1992-. “Atmospheric concentrations of organophosphate esters in Delhi, India.” 2018. Masters Thesis, Baylor University. Accessed January 23, 2021.
http://hdl.handle.net/2104/10394.
MLA Handbook (7th Edition):
Stephensen, Marie, 1992-. “Atmospheric concentrations of organophosphate esters in Delhi, India.” 2018. Web. 23 Jan 2021.
Vancouver:
Stephensen, Marie 1. Atmospheric concentrations of organophosphate esters in Delhi, India. [Internet] [Masters thesis]. Baylor University; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2104/10394.
Council of Science Editors:
Stephensen, Marie 1. Atmospheric concentrations of organophosphate esters in Delhi, India. [Masters Thesis]. Baylor University; 2018. Available from: http://hdl.handle.net/2104/10394
University of Toronto
21.
Zhang, Yuxiang.
Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation.
Degree: 2016, University of Toronto
URL: http://hdl.handle.net/1807/79780
► Chronic air pollution exposure is associated with accelerated lung function decline and increased prevalence and exacerbations of chronic inflammatory lung diseases, such as asthma. However,…
(more)
▼ Chronic air pollution exposure is associated with accelerated lung function decline and increased prevalence and exacerbations of chronic inflammatory lung diseases, such as asthma. However, its pathological effects have not been studied extensively. Therefore we assessed the physiological and immune responses induced by chronic exposure to low concentrations of diesel particles (freshly-generated particles [DEP] or diesel standard reference material [SRM]) in both healthy mice and those with house dust mite (HDM)-induced allergic airways inflammation (reflective of asthma). We found that SRM exposure led to subtle neutrophilic inflammation in healthy mice, and that DEP increased central airway reactivity without affecting resultant airway constriction to methacholine in the asthma model. Results suggest that chronic exposure leads to immune changes in mice representing healthy individuals that may enhance the adverse effects of future allergen encounter; the low dose of particulate matter exposure has no effect in asthmatic background.
M.Sc.
Advisors/Committee Members: Chow, Chung-wai, Medical Science.
Subjects/Keywords: allergen; asthma; particulate matter; pollution; 0564
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APA (6th Edition):
Zhang, Y. (2016). Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/79780
Chicago Manual of Style (16th Edition):
Zhang, Yuxiang. “Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation.” 2016. Masters Thesis, University of Toronto. Accessed January 23, 2021.
http://hdl.handle.net/1807/79780.
MLA Handbook (7th Edition):
Zhang, Yuxiang. “Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation.” 2016. Web. 23 Jan 2021.
Vancouver:
Zhang Y. Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation. [Internet] [Masters thesis]. University of Toronto; 2016. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1807/79780.
Council of Science Editors:
Zhang Y. Effects of Concurrent Exposure of Diesel Exhaust Particles and House Dust Mite on the Development of Allergen-Induced Airways Inflammation. [Masters Thesis]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/79780
Delft University of Technology
22.
Rolaff, S.E. (author).
The Living Bridge.
Degree: 2010, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:54d70635-e77d-4bb5-a5d9-10130a61acd4
► The intention of cities is to grow closer and closer to their highways. The positive side is that it increases the mobility of the inhabitants…
(more)
▼ The intention of cities is to grow closer and closer to their highways. The positive side is that it increases the mobility of the inhabitants because they are close to the infrastructure. However till now the highway is often not really implemented in the urban plan, but is more a separated element, which cuts through the landscape. This is caused by different reasons, but one of them is that the highway brings noise and pollution problems. Because of these problems there are nowadays even some functions restricted to be built in a band of 300 meters from the highway, like schools, health centers etc. When it’s possible to reduce the pollution and noise significantly by the design, it could be possible to build closer to the highway and create there a pleasant zone where people would like to stay. The building that will be investigated, is also close to the highway, because it creates a link between two different areas which are separated by the highway. The location is close to the Prins Claus Plein (The Hague, Netherlands), which forms the junction of the highways A4 and A12 . The goal in this research is to find ways to make it possible to build close to the highway by handling with the problems of noise and air pollution. The relationship between the highway and the building is greatest at the edges of the building, so that is an interesting territory to explore.
Architectural Engineering
Building Technology
Architecture
Advisors/Committee Members: Van den Ham, E.R. (mentor), Cuperus, Y.J. (mentor).
Subjects/Keywords: noise; particulate matter
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APA (6th Edition):
Rolaff, S. E. (. (2010). The Living Bridge. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:54d70635-e77d-4bb5-a5d9-10130a61acd4
Chicago Manual of Style (16th Edition):
Rolaff, S E (author). “The Living Bridge.” 2010. Masters Thesis, Delft University of Technology. Accessed January 23, 2021.
http://resolver.tudelft.nl/uuid:54d70635-e77d-4bb5-a5d9-10130a61acd4.
MLA Handbook (7th Edition):
Rolaff, S E (author). “The Living Bridge.” 2010. Web. 23 Jan 2021.
Vancouver:
Rolaff SE(. The Living Bridge. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2021 Jan 23].
Available from: http://resolver.tudelft.nl/uuid:54d70635-e77d-4bb5-a5d9-10130a61acd4.
Council of Science Editors:
Rolaff SE(. The Living Bridge. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:54d70635-e77d-4bb5-a5d9-10130a61acd4
23.
Tai, Ya-Chun.
Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe.
Degree: 2015, University of Nevada – Reno
URL: http://hdl.handle.net/11714/2583
► Lake Tahoe, an oligotrophic lake appreciated for its fresh water and geographic setting, has been reported of its declining water clarity over the past few…
(more)
▼ Lake Tahoe, an oligotrophic lake appreciated for its fresh water and geographic setting, has been reported of its declining water clarity over the past few decades due to nutrient and sediment particle inputs. Contributions from atmospheric deposition of
particulate matter (PM) have been suggested to be substantial, yet inadequately quantified. This study established three long-term monitoring sites (July 2013 – August 2014) to measure 24-hr, size-resolved dry and wet PM deposition in near-shore, offshore-background, and upper watershed conditions in the Lake Tahoe Basin. The objectives are to: 1) investigate spatiotemporal variations of PM deposition flux, 2) obtain dry deposition velocity using mass deposition flux and PM concentration measurements, and 3) provide estimated annual number deposition flux (NDF) via dry and wet processes. Dry deposition was quantified on passive substrates using a scanning electron microscope, while wet deposition was based on particles suspended in rain and/or snow water analyzed by laser diffraction spectroscopy. The results show higher NDFdry and greater monthly variability at the near-shore than the offshore and upper-watershed sites, suggesting substantial impacts of nearby beach, traffic, and construction activities. Seasonal NDFdry and NDFwet (1–20 µm) were consistent across all three monitoring sites, characterized by higher NDFdry in fall, winter and summer but higher NDFwet in spring when precipitation occurred more frequently. The annual NDFdry+wet, estimated between 4.31 x 10
19 and 8.61 x 10
19 particles per year, is in the same order of magnitude with a previous estimate of 7.4 x 10
19 (0.5–16 µm) particles per year by the Lake Tahoe Total Maximum Daily Load (TMDL) using an independent approach. Comparison of the NDFdry with conventional eddy correlation measurements was examined through short-term collocated monitoring.
Advisors/Committee Members: Chen, Lung-Wen Antony (advisor), Wang, Xiaoliang (committee member), Holmes, Heather (committee member).
Subjects/Keywords: Atmospheric deposition; Lake Tahoe; Particulate matter
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APA (6th Edition):
Tai, Y. (2015). Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2583
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tai, Ya-Chun. “Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe.” 2015. Thesis, University of Nevada – Reno. Accessed January 23, 2021.
http://hdl.handle.net/11714/2583.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tai, Ya-Chun. “Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe.” 2015. Web. 23 Jan 2021.
Vancouver:
Tai Y. Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe. [Internet] [Thesis]. University of Nevada – Reno; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11714/2583.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tai Y. Assessment of Annual and Seasonal Fluxes of Particulate Matter from Atmospheric Deposition to Lake Tahoe. [Thesis]. University of Nevada – Reno; 2015. Available from: http://hdl.handle.net/11714/2583
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
24.
Yan, Fang.
Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector.
Degree: PhD, 0231, 2012, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/31991
► Particulate matter (PM) emissions from the transportation sector have significant impacts on climate and human health. Global projections of future PM emissions are critical elements…
(more)
▼ Particulate matter (PM) emissions from the transportation sector have significant impacts on climate and human health. Global projections of future PM emissions are critical elements in understanding air quality impacts on regional and global scales, because they are needed to forecast future air quality and climate change and to examine the effects of mitigation options. This dissertation aims to develop new methods for projections of future global emission from transportation, to analyze the uncertainty in those projections, and to investigate the effectiveness of mitigation measures.
A dynamic model of vehicle population linked to emission characteristics, SPEW-Trend, is used to make the emission projections. Unlike previous models of global emissions, this model incorporates considerable detail on the technology stock, including the vehicle type and age, and the number of emitters with very high emissions (termed “superemitters”). These features of the vehicle fleet alter over time and respond to economic growth and changes in regional income. Estimates of vehicle growth are driven by changes in predicted fuel consumption from macroeconomic scenarios, ensuring that PM projections are consistent with scenarios that are used to assess impacts of greenhouse-gas emissions. Changes in the vehicle fleet occur through retirement, new emission standards, and the change of normal vehicles to superemitters. Retirement rates and superemitter fractions depend on regional income levels. Adoption dates of emission standards are either estimated from planned implementation or from income levels.
Projections of global emissions from on-road vehicles for the period 2010 to 2050 are made under four commonly-used global fuel-consumption scenarios. Common features of these scenarios are a projected emission decrease until 2035, as emission standards are implemented worldwide and older engines built to lower standards are phased out. However, superemitters have a considerable effect on emission totals. They can potentially contribute more than 50% of global emissions around 2020-2030, which suggests that they should be specifically addressed in modeling and mitigation measures.
Although it is common to acknowledge uncertainties in future economic trajectories, most current emission projection models are deterministic. Sensitivity analysis and Monte Carlo simulations are performed to quantify the uncertainties in these emission projections. The current work examines the emission sensitivities due to uncertainties in vehicle retirement rate, timing of emission standards, superemitter transition rate, and emission degradation rate. It is concluded that global emissions are most sensitive to retirement rate. Monte Carlo simulations show that emission uncertainty caused by lack of knowledge about technology composition is about the same as the uncertainty demonstrated by alternative economic scenarios, especially during the period 2010 to 2030.
Two mitigation measures, scrappage of vehicles and retrofit to advanced control…
Advisors/Committee Members: Bond, Tami C. (advisor), Bond, Tami C. (Committee Chair), Rood, Mark J. (committee member), Streets, David G. (committee member), Eheart, J. Wayland (committee member).
Subjects/Keywords: Emission projection; Particulate Matter; Transportation; Uncertainty; Mitigation
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APA (6th Edition):
Yan, F. (2012). Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/31991
Chicago Manual of Style (16th Edition):
Yan, Fang. “Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector.” 2012. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/31991.
MLA Handbook (7th Edition):
Yan, Fang. “Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector.” 2012. Web. 23 Jan 2021.
Vancouver:
Yan F. Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/31991.
Council of Science Editors:
Yan F. Emission projection and uncertainty analysis of primary particulate matter (PM) from the transportation sector. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/31991
University of Minnesota
25.
Hamilton, Jaimie.
Characterization of Emissions from Small Scale Biomass Gasifier.
Degree: M.S.M.E., Mechanical Engineering, 2013, University of Minnesota
URL: http://hdl.handle.net/11299/191283
► Gasification of biomass has the potential to address many issues related to both the world's energy future and greenhouse gas emissions. Gasification can be carried…
(more)
▼ Gasification of biomass has the potential to address many issues related to both the world's energy future and greenhouse gas emissions. Gasification can be carried out in a variety of ways depending on the end-use application of the synthesis gas (syngas) or producer gas. Gasification can also use a variety of feedstocks. Gasifying agricultural waste to generate electricity or provide heating and cooling solutions has the potential to utilize waste products while providing necessary energy. Unfortunately, there are environmental and human health concerns related to the conversion of biomass to energy and the combustion of the bio-derived fuel, as well as efficiency concerns related to the technology. In this study, The Power Pallet, a commercially available integrated gasification reactor, engine and generator was used to quantify the contaminants in the unfiltered producer gas, the filtered producer gas, and the engine exhaust and determine the engine's ability to reduce contaminants through filtration and combustion. The system was also tested to determine the effect of generator loading on operating conditions, emissions, and overall efficiency. The study used a fixed-bed downdraft modified Imbert reactor with a Kubota spark-ignited natural gas engine with a Mecc Alte 10kW generator. Organic solvent, gaseous and particulate matter emissions were characterized at three locations in the gasification system to determine the packed bed filter and engine's ability to reduce concentrations of contaminants. Contaminants, such as benzene, toluene, ethylbenzene, and xylenes (BTEX) and PM, in the gasifier system were cleaned up through the packed bed filter and through combustion in the engine. PM concentrations were approximately 70 mg/Nm3 in the pre-filtered producer gas but concentrations were reduced 98-99% through the packed bed filter. PM concentrations did not change significantly during the combustion in the engine yet specific concentrations of PM were below federally mandated emissions limits for Tier 4 diesel engines. Combustible compound were 99% consumed in the engine and specific concentrations of carbon monoxide were below federally mandated levels from the engine's exhaust. Concentrations of BTEX compounds were reduced to a small degree in the packed bed filter and significantly reduced in the engine. Although concentrations of benzene in engine exhaust were greater than 10 ppm, operating the gasification system in a well-ventilated environment would ensure that the ambient air concentrations of BTEX compounds are below federal limits and protect human health and the environment from the hazards. The efficiency of the reactor increased significantly with increasing electrical load because the reactor operates at constant temperature and the higher flow rates of biomass meant that the heat loss was a smaller portion of the work from the engine. The overall system efficiency increased with increasing electrical load and the efficiency of the engine was fairly steady over the small range of generator loads…
Subjects/Keywords: biomass; downdraft; gasifier; organic solvents; particulate matter
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APA (6th Edition):
Hamilton, J. (2013). Characterization of Emissions from Small Scale Biomass Gasifier. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/191283
Chicago Manual of Style (16th Edition):
Hamilton, Jaimie. “Characterization of Emissions from Small Scale Biomass Gasifier.” 2013. Masters Thesis, University of Minnesota. Accessed January 23, 2021.
http://hdl.handle.net/11299/191283.
MLA Handbook (7th Edition):
Hamilton, Jaimie. “Characterization of Emissions from Small Scale Biomass Gasifier.” 2013. Web. 23 Jan 2021.
Vancouver:
Hamilton J. Characterization of Emissions from Small Scale Biomass Gasifier. [Internet] [Masters thesis]. University of Minnesota; 2013. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11299/191283.
Council of Science Editors:
Hamilton J. Characterization of Emissions from Small Scale Biomass Gasifier. [Masters Thesis]. University of Minnesota; 2013. Available from: http://hdl.handle.net/11299/191283
University of Southern California
26.
Pakbin, Payam.
Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California.
Degree: PhD, Environmental Engineering, 2011, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/654664/rec/3647
► Numerous epidemiological studies have associated the adverse respiratory and cardiovascular effects to atmospheric particulate matter (PM) exposure. There is ample literature providing evidence of adverse…
(more)
▼ Numerous epidemiological studies have associated the
adverse respiratory and cardiovascular effects to atmospheric
particulate matter (PM) exposure. There is ample literature
providing evidence of adverse effects for all inhalable particle
size ranges, however the biological mechanisms responsible for the
toxicity of PM are still uncertain. Due to the lack of data about
how different PM components act in a complex mixture, it is not
possible to precisely quantify the contributions from the main
sources and components to the effects on human health. Thus, PM in
health impact assessments is usually regarded as a uniform
pollutant, regardless of the contribution from different sources,
and assuming the same effect on morality. This is probably not a
correct assumption, but is a pragmatic compromise while waiting for
sufficient knowledge that will allow the use of indicators other
than particle mass. As a result linking the toxicity of PM with
several of its chemical components has been the focus of
considerable research over the past decade. The associations
between health endpoints with the hundreds of potentially toxic
chemical species and PM characteristics may be daunting and not
cost efficient. Therefore it is desirable to focus on the casualty
of the few critical chemical components that current science
supports as potentially the most harmful to human health. Such
information will allow for more effective regulatory control
strategies, more targeted air quality standards, and as a result,
reductions in population exposure to the most harmful types of
airborne PM. ❧ The current
particulate matter emission standards
are based on PM mass only. However, the prevailing scientific
opinion contends that PM mass is a surrogate measure of other
physical and chemical properties of PM that are the actual causes
of the observed health effects. In this study we focus on the PM
components that are not currently regulated, while there is ample
evidence that they can cause hazardous health outcomes. The effect
of the new after-treatment technologies on the composition of the
remaining organic compounds, including the semi-volatile organic
carbon (SVOC) fraction, is studied. While the association of
adverse health effects with SVOC compounds has been reasonably well
documented, the exact mechanisms by which SVOC compounds inflict
health effects remain largely unknown. Therefore a new technology
is developed that makes it possible to conduct toxicity and
inhalation exposure studies separately to PM and vapor phase SVOC
to investigate the degree to which health effects attributable to
these pollutants are affected by their phases. In addition, in
regards of PM₁₀ standards, coarse PM emissions are usually from
hard to control sources like windblown soil and dust, brake lining
abrasion, tire wear and bioaerosols, therefore control of fine PM
emissions is easier to achieve in order to meet PM₁₀ standards.
Coarse and fine PM have substantially different sources and sinks,
and as a result different chemical composition, which would lead…
Advisors/Committee Members: Sioutas, Constantinos (Committee Chair), Herny, Ronald (Committee Member), Moffett, James (Committee Member).
Subjects/Keywords: aerosol; particulate matter; air quality; coarse particles
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APA ·
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CSE |
Export
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Manager
APA (6th Edition):
Pakbin, P. (2011). Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/654664/rec/3647
Chicago Manual of Style (16th Edition):
Pakbin, Payam. “Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California.” 2011. Doctoral Dissertation, University of Southern California. Accessed January 23, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/654664/rec/3647.
MLA Handbook (7th Edition):
Pakbin, Payam. “Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California.” 2011. Web. 23 Jan 2021.
Vancouver:
Pakbin P. Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2021 Jan 23].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/654664/rec/3647.
Council of Science Editors:
Pakbin P. Investigation of physico-chemical characteristics of
size-segregated particulate matter in a metropolitan environment
and their impact on air quality in southern California. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/654664/rec/3647
University of North Texas
27.
Diaz Poueriet, Pablo.
Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas.
Degree: 2012, University of North Texas
URL: https://digital.library.unt.edu/ark:/67531/metadc115069/
► Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas…
(more)
▼ Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas with major industries and infrastructure supporting the fossil-fuel based energy sector. Most of the major cities on the state have been impacted by significant air pollution events over the past decade. Studies conducted in the southern coastal region of TX have identified long range transport as a major contributor of
particulate matter (PM) pollution along with local emissions. Biomass burns, secondary sulfates and diesel emissions sources are comprise as the dominant mass of PM2.5 have been noted to be formed by the long range transport biomass from Central America. Thus, the primary objective of this study was to identify and quantify local as well as regional sources contributing to the PM pollution in the coastal area of Brownsville located along the Gulf of Mexico. Source apportionment techniques such as principal component analysis (PCA) and positive matrix factorization (PMF) were employed on the air quality monitoring data to identify and quantify local and regional sources affecting this coastal region. As a supplement to the PMF and PCA, conditional probability function (CPF) analysis and potential source contribution function (PSCF) analysis were employed to characterize the meteorological influences for PM events. PCA identified an optimal solution of 6 sources affecting the coastal area of Brownsville, while PMF resolved 8 sources for the same area. Biomass comingled with sea salt was identified to be the dominant contributor from the PCA analysis with 30.2% of the apportioned PM mass in Brownsville, meanwhile PMF account secondary sulfates I & II with 27.6%. the other common sources identified included, biomass burning, crustal dust, secondary sulfate, oil combustion, mobile sources and miscellaneous traffic sources.
Advisors/Committee Members: John, Kuruvilla, Fortier, Alexandra, Acevedo, Miguel F..
Subjects/Keywords: Source apportionment; air quality; particulate matter
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Louisiana State University
28.
Young, John Scott.
Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System.
Degree: MS, 2015, Louisiana State University
URL: etd-11162015-154417
;
https://digitalcommons.lsu.edu/gradschool_theses/1700
► This research documents the process of designing a technique, materials, and method to filter particulate matter (PM) deposited on surfaces in homes. PM collected from…
(more)
▼ This research documents the process of designing a technique, materials, and method to filter particulate matter (PM) deposited on surfaces in homes. PM collected from homes in a known industrial corridor, Baton Rouge, was tested for key pollutants sorbed to their surface in an investigation of household air depositions. This research successfully designed a collection method for bulk samples and a filtration apparatus and method for collecting sized laboratory testable samples using porous membrane filtration technology. This research found relatively high concentrations of polycyclic aromatic hydrocarbons (PAHs), and the presence of some metals. This research also found the presence of persistent, organic radicals in homes which may be environmentally persistent free radicals (EPFRs). EPFRs are formed in industrial processes and are an emerging pollutant of importance described by the Louisiana State University Superfund Research Center. The manner in which organics, metals, and EPFRs exist as particle-pollutant systems in real environmental conditions will require more study. Further research can also be undertaken to draw spatial relations between sources of particle pollution and particle abundance and chemical composition on surfaces in homes in Baton Rouge and other urban areas.
Subjects/Keywords: Particulate matter; PM; Superfund; PAH; EPFR; Metals
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Manager
APA (6th Edition):
Young, J. S. (2015). Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System. (Masters Thesis). Louisiana State University. Retrieved from etd-11162015-154417 ; https://digitalcommons.lsu.edu/gradschool_theses/1700
Chicago Manual of Style (16th Edition):
Young, John Scott. “Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System.” 2015. Masters Thesis, Louisiana State University. Accessed January 23, 2021.
etd-11162015-154417 ; https://digitalcommons.lsu.edu/gradschool_theses/1700.
MLA Handbook (7th Edition):
Young, John Scott. “Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System.” 2015. Web. 23 Jan 2021.
Vancouver:
Young JS. Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System. [Internet] [Masters thesis]. Louisiana State University; 2015. [cited 2021 Jan 23].
Available from: etd-11162015-154417 ; https://digitalcommons.lsu.edu/gradschool_theses/1700.
Council of Science Editors:
Young JS. Investigation of Potentially Hazardous Particulate Matter in Homes: Designing a Particle Filtration System. [Masters Thesis]. Louisiana State University; 2015. Available from: etd-11162015-154417 ; https://digitalcommons.lsu.edu/gradschool_theses/1700
University of Guelph
29.
Forero, Luis Gabriel.
Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario.
Degree: MS, Department of Plant Agriculture, 2017, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10320
► Neonicotinoid insecticides are important globally to control pests in numerous agricultural crops, representing 24% of total agricultural insecticide use. Recently, exposure of non-target organisms to…
(more)
▼ Neonicotinoid insecticides are important globally to control pests in numerous agricultural crops, representing 24% of total agricultural insecticide use. Recently, exposure of non-target organisms to neonicotinoids present in various agricultural matrices is debated as a result of their use as seed treatments in field crops. Field sampling and laboratory studies were conducted from 2013 to 2016 to determine concentration and movement of soil bound residues and
particulate matter exhausted from vacuum type planters during the planting of neonicotinoid treated seed. “Wick effect” was reported as an important process that results in accumulation of neonicotinoid residues in the soil surface. Total suspended
particulate (TSP) concentrations of neonicotinoid are higher at the edge of fields during planting than tillage of fields. Neonicotinoid residues were detected during wind events, tillage and planting practices. Efforts should be directed towards reducing the amount of material dislodging from treated seeds and reducing the amounts of contaminated dust exhausted by the planter. Avoiding excessive tillage and practicing soil conservation can be useful in minimizing the off-site transport of neonicotinoid residues.
Advisors/Committee Members: Schaafsma, Art W. (advisor).
Subjects/Keywords: Neonicotinoids; Particulate matter; Seed treatments; Insecticides; Soil
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APA (6th Edition):
Forero, L. G. (2017). Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10320
Chicago Manual of Style (16th Edition):
Forero, Luis Gabriel. “Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario.” 2017. Masters Thesis, University of Guelph. Accessed January 23, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10320.
MLA Handbook (7th Edition):
Forero, Luis Gabriel. “Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario.” 2017. Web. 23 Jan 2021.
Vancouver:
Forero LG. Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario. [Internet] [Masters thesis]. University of Guelph; 2017. [cited 2021 Jan 23].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10320.
Council of Science Editors:
Forero LG. Concentration and Off-target Movement of Neonicotinoid Residues During Agricultural Practices in Southwestern Ontario. [Masters Thesis]. University of Guelph; 2017. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/10320
University of Guelph
30.
McGrath, Patrick.
The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada.
Degree: Master of Applied Science, School of Engineering, 2020, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17691
► The Canadian egg industry is currently facing an industry wide transition in layer barn hen housing style from conventional battery-cage barns to cage-free or enriched…
(more)
▼ The Canadian egg industry is currently facing an industry wide transition in layer barn hen housing style from conventional battery-cage barns to cage-free or enriched cage barns. This transition in housing style, although aimed to improve hen welfare, has brought about concerns for the indoor air quality and the environmental impact of these facilities. To assess these concerns, a research study was performed at a free-run aviary layer barn in central Saskatchewan, Canada, periodically spanning August of 2018 to May of 2019. This study measured several barn parameters, meteorological conditions, hen details, and pollutant concentrations to develop emission factors (EFs, g d-1 AU-1, AU – “animal unit” which is equivalent to 500 kg of live mass) for ammonia (NH3) and size-fractioned
particulate matter (PM2.5 and PM10).
The overall EFs for this facility for ammonia, PM2.5, and PM10 were 13.91 ± 16.04, 16.27 ± 23.40, and 37.74 ± 50.62 g d-1 AU-1, respectively. EFs were found to vary seasonally and diurnally. The ventilation rate, litter conditions, relative humidity, and hen activity all had strong impacts on the emissions from this facility. The ammonia EFs from this facility were less than those found from similar studies performed in Ontario, Canada on a conventional battery-cage barn and on a free-run aviary barn. The PM EFs from this study were greater than those found from the same studies in Ontario. Differences in EFs between the facilities were attributed to differences in housing styles, relative humidity, and temperature.
Advisors/Committee Members: Van Heyst, Bill (advisor).
Subjects/Keywords: ammonia; cage-free; emission factor; particulate matter
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APA ·
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MLA ·
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APA (6th Edition):
McGrath, P. (2020). The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17691
Chicago Manual of Style (16th Edition):
McGrath, Patrick. “The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada.” 2020. Masters Thesis, University of Guelph. Accessed January 23, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17691.
MLA Handbook (7th Edition):
McGrath, Patrick. “The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada.” 2020. Web. 23 Jan 2021.
Vancouver:
McGrath P. The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada. [Internet] [Masters thesis]. University of Guelph; 2020. [cited 2021 Jan 23].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17691.
Council of Science Editors:
McGrath P. The Development of Emission Factors for Ammonia and Size-Fractioned Particulate Matter from a Cage-Free Layer Facility in Western Canada. [Masters Thesis]. University of Guelph; 2020. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17691
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Open Access Theses and Dissertations
