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Michael Howard Bergin
Sternberg Family Professor of Civil & Environmental Engineering
Journal ArticleAtmospheric Pollution Research · May 1, 2026
Transboundary air pollution is a critical environmental and public health issue across South Asia. Nepal experiences high exposure due to its geographic location near major emission regions. A network of calibrated low-cost PM2.5 sensors across ...
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Journal ArticleEnvironment international · May 2026
The need to monitor South Asia's air quality stems from its significant negative effects on human and environmental health. Traditional, regulatory-grade air quality monitoring systems have proven costly to operate and very difficult to maintain in most So ...
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Journal ArticleAtmospheric Pollution Research · February 1, 2026
Air pollution remains a critical environmental and public health concern, particularly in developing countries like Bangladesh. Although urban air pollution has received significant attention, rural areas also experience high PM2.5 concentration ...
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Journal ArticleJournal of Workplace Behavioral Health · January 1, 2026
In response to the significant societal challenge posed by stress in the workplace, a range of online work-stress management interventions have been developed, with increasing evidence for their efficacy across a range of psychosocial outcomes. This review ...
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Journal ArticleInternational Journal of Environmental Research · December 1, 2025
Low-cost sensors offer a cost-effective alternative for air quality monitoring but require field validation to ensure accuracy and reliability in local environment. This study proposes a field calibration approach for TSI BlueSky sensors and evaluates thei ...
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Journal ArticleEnvironmental Advances · October 1, 2025
Black Carbon (BC) is a major component of atmospheric aerosol produced from incomplete combustion of fossil fuels, biomass, and solid fuel. About 42 % of BC emissions are from open biomass burning with major contributions from Africa and Asia. A low-cost ( ...
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Journal ArticleEnvironmental science & technology letters · September 2025
Quantifying people's exposure to wildfires is essential for assessing related health risks. While hydroxyl metabolites of polycyclic aromatic hydrocarbons (PAHs) are commonly used exposure biomarkers of combustion-originated air pollutants, methylated PAHs ...
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Journal ArticleJournal of hazardous materials · September 2025
Indoor-sourced PM2.5 plays an important role in shaping indoor air quality. Although previous studies have investigated its sources and physicochemical characteristics, there are still gaps in developing effective approaches to quantify the cont ...
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Journal ArticleJournal of Hazardous Materials Advances · August 1, 2025
Air pollution is a considerable global public health threat, requiring efficient monitoring and forecasting to guide decision-making. This study introduces a cascaded model of enhanced Random Forest with Convolutional Neural Network (RF-CNN) that predicts ...
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Journal ArticleEnvironment international · June 2025
This study gives an overview of the air quality monitoring challenges faced by South Asian countries, with a specific focus on Pakistan, and explores the potential application of low-cost sensors (LCS) to address these issues. Currently, 89% of the 4.2 mil ...
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Journal ArticleEnvironmental Research Communications · June 1, 2025
The Indo-Gangetic Plain, one of the most densely populated areas on earth, suffers from a combination of mobile source emissions, industrial point sources, agricultural biomass burning and other sources that lead to extreme levels of PM2.5 conce ...
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Journal ArticleAtmospheric Pollution Research · January 1, 2025
Although pollution is visible at certain times in the capital Greater Male’ Region (GMR), Maldives, only limited quantitative measures of the pollution concentrations are available. Hence, this study aims to understand the spatiotemporal patterns of Partic ...
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Journal ArticleInternational Journal of Remote Sensing · January 1, 2025
The proposed study explores the prediction of ground truth PM2.5 ug/m3 concentration using satellite imagery via a combined deep learning approach followed by a machine learning model. We employ a convolutional neural network (CNN) ba ...
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ConferenceInternational Conference on Innovations in Engineering Science and Technology for Sustainable Development Icest 2025 · January 1, 2025
Urban air quality in the Maldives remains understudied, partly due to a lack of capacity to establish reference air quality monitoring stations. This study assessed the practicality and feasibility of measuring fine particulate matter, PM2.5, using low-cos ...
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Journal ArticleAmerican Chemical Society Environmental Science and Technology Air · December 13, 2024
Climate researchers have examined many impacts of climate change on energy supply and demand under various scenarios. However, the effect of changing particulate deposition onto solar panel surfaces on solar power production efficiency (i.e., soiling) has ...
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Journal ArticleAtmospheric Environment · December 1, 2024
The detrimental impacts of fine particulate matter (PM2.5) on human health, climate, ecosystems, crops, and building materials are well-established. However, there remain unresolved inquiries regarding the precise location of the sources of PM
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Journal ArticleAmerican Chemical Society Environmental Science and Technology Air · November 8, 2024
Organic matter (OM) is a major contributor to the oxidative potential (OP) of indoor PM2.5. Portable air purifiers equipped with high-efficiency particulate air (HEPA) filters are known to effectively remove indoor PM2.5 mass concentr ...
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Journal ArticlePediatric research · September 2024
BackgroundColder temperature exposure is a known trigger for pediatric asthma exacerbation. The induction of oxidative stress is a known pathophysiologic pathway for asthma exacerbation. However, the role of oxidative stress in linking colder temp ...
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Journal ArticleACS ES&T air · September 2024
Air sensors can provide valuable non-regulatory and supplemental data as they can be affordably deployed in large numbers and stationed in remote areas far away from regulatory air monitoring stations. Air sensors have inherent limitations that are critica ...
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Journal ArticleEnvironmental Science and Technology Letters · August 13, 2024
Studies of urban heat are often limited by their ability to measure air temperature; data are collected either at a few locations over time or at many locations at one point in time. Citizen science approaches to observing temperature provide a way to over ...
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Journal ArticleAmerican Chemical Society Environmental Science and Technology Air · August 9, 2024
After being transported from outdoor to indoor environments, a large portion of ozone (O3) reacts with indoor chemicals to generate O3 reaction products. A fraction of these products can partition to fine particulate matter (PM2. ...
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Journal ArticleEnvironmental science & technology letters · March 2024
Climate change has contributed to increased frequency and intensity of wildfire. Studying its acute effects is limited due to unpredictable nature of wildfire occurrence, which necessitates readily deployable techniques to collect biospecimens. To identify ...
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Journal ArticleAtmospheric Environment · February 15, 2024
The high-resolution spatio-temporal monitoring through low-cost sensors (LCS) provides important insights into the dynamics of localized pollution patterns and in conceptualizing effective environmental management and public health interventions. We assess ...
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Journal ArticleScientific reports · January 2024
The urban heat island effect causes increased heat stress in urban areas. Cool roofs and urban greening have been promoted as mitigation strategies to reduce this effect. However, evaluating their efficacy remains a challenge, as potential temperature redu ...
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Journal ArticleIEEE Journal of Photovoltaics · January 1, 2024
In this study, the impact of pollen as a PV soiling agent is investigated. The performance data of five utility-scale PV plants in North Carolina, USA, was collected and analyzed using two soiling extraction methods. Satellite and environmental data, inclu ...
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Conference18th Conference of the International Society of Indoor Air Quality and Climate Indoor AIR 2024 Conference Program and Proceedings · January 1, 2024
This study aims to assess the potential benefits of a longer-term indoor HEPA filtration intervention in improving the cardio-metabolic profiles of older adults. We present a profile of sociodemographic, health, and indoor exposure-related lifestyle charac ...
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Conference18th Conference of the International Society of Indoor Air Quality and Climate Indoor AIR 2024 Conference Program and Proceedings · January 1, 2024
Exposure to ozone (O3) reaction products has been linked to adverse pulmonary health effects. These reaction products may be carried by fine particulate matter (PM2.5) that can deposit in the deep lung. In a panel of 43 asthmatic chil ...
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Journal ArticleSolar Energy · November 15, 2023
Hydrophobic-coated glass (CS) on PV surfaces is known to reduce particulate matter (PM) accumulation. However, there is no comparative study on the % reduction in soiling loss (% RSL) on CS with respect to uncoated glass (UCS) for clean and polluted enviro ...
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Journal ArticleEnvironmental Science and Technology Letters · August 8, 2023
A rapid increase in municipal solid waste generation has far outpaced resources to manage waste in many developing countries, resulting in the burning of trash in designated landfills or public places, the release of harmful air pollutants, and exposure of ...
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Journal ArticleJournal of thoracic disease · August 2023
BackgroundChildhood Asthma Control Test (C-ACT) is a well-validated questionnaire for asthma controls among 4-11 years old children. This study aims to examine if longitudinal C-ACT score changes could also reflect lung pathophysiologic changes.
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Journal ArticleEnvironmental technology · April 2023
An increasing body of literature suggests that aerosol inhalation plays a primary role in COVID-19 transmission, particularly in indoor settings. Mechanistic stochastic models can help public health professionals, engineers, and space planners understand t ...
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Journal ArticleSolar Energy · March 15, 2023
The deposition of particulate matter (PM) on PV surfaces reduces energy generation, which results in huge losses to the PV industry. Hydrophobic coatings are known to reduce PM deposition on PV surfaces. Covering panels during the night is expected to redu ...
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Journal ArticleSolar Energy · March 1, 2023
The optical transmittance loss (OTL) of glass coupons is frequently used to estimate the soiling losses of solar PVs. The soiling loss estimation methodologies (SLEMs) and selection range of wavelengths for OTL evaluation vary significantly, influencing th ...
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Journal ArticlePloS one · January 2023
Ambient temperature and relative humidity can affect asthma symptoms. Apparent temperature is a measure of temperature perceived by humans that takes into account the effect of humidity. However, the potential link between personal exposures to apparent te ...
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ConferenceConference Record of the IEEE Photovoltaic Specialists Conference · January 1, 2023
Soiling, the accumulation of dust and other contaminants on the surface of photovoltaic (PV) modules, is a common factor that can negatively impact the performance of PV systems. In this study, the authors aim to analyze the impact of pollen on soiling los ...
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Journal ArticleEnvironments Mdpi · July 1, 2022
Indian cities have some of the poorest air quality globally but volatile organic compounds (VOCs)—many of which adversely affect health—and their indoor sources remain understudied in India. In this pilot study we quantified hundreds of VOCs inside and out ...
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Journal ArticleThe Science of the total environment · June 2022
The aeromicrobiological transmission pathway of enteric pathogens in places with unsafe sanitation services is poorly understood. In an attempt to partly fill this knowledge gap, we assessed the potential public health impact of bioaerosols near open waste ...
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Journal ArticleScience of Remote Sensing · June 1, 2022
Convolutional Neural Networks (CNNs) are a promising technique to predict highly localized fine particulate matter (i.e., PM2.5 levels) based on high-resolution satellite imagery. Unfortunately, CNNs typically require large amounts of supervised ...
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Journal ArticleEnvironmental research · April 2022
Exposure to fine particulate matter (PM2.5) and ozone (O3) may lead to inflammation and oxidative damage in the oral cavity, which is hypothesized to contribute to the worsening of airway inflammation and asthma symptoms. In this pane ...
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Journal ArticleThe Science of the total environment · February 2022
Black and Brown Carbon (BC, BrC) are key parameters of climate forcing, yet significant challenges exist assigning emission source contributions to light-absorption by carbonaceous aerosols. Additionally, BC and BrC emissions add to extreme air pollution e ...
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Journal ArticleCriminal Justice and Behavior · February 1, 2022
Significant in the management of a safe and secure custodial environment is the compliance of incarcerated persons with the prison rules and the directives of prison officers. In recent years, there has been increased research focus on the role of normativ ...
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Journal ArticleEnvironmental science & technology · November 2021
Urban sanitation infrastructure is inadequate in many low-income countries, leading to the presence of highly concentrated, uncontained fecal waste streams in densely populated areas. Combined with mechanisms of aerosolization, airborne transport of enteri ...
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Journal ArticleSolar Energy · October 1, 2021
Photovoltaic soiling - energy loss due to dust and particulate matter (PM) deposition - remains a top concern for global renewable energy generation. To minimize energy losses, the seasonality of soiling needs to be understood. This comprehensive study too ...
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Journal ArticleThe Science of the total environment · June 2021
BackgroundHeightening oxidative stress and inflammation is an important pathophysiological mechanism underlying air pollution health effects in people with asthma. Melatonin can suppress oxidative stress and inflammation in pulmonary and circulato ...
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Journal ArticleJournal of nursing management · May 2021
AimTo illustrate the value of Checkland's 'Soft Systems' approach to explore and analyse the interaction of human and organisational factors that affect service delivery and patient experience in one specialist epilepsy service.Background ...
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Journal ArticleRemote Sensing · April 1, 2021
Satellite-based rapid sweeping screening of localized PM2.5 hotspots at fine-scale local neighborhood levels is highly desirable. This motivated us to develop a random forest- convolutional neural network-local contrast normalization (RF-CNN-LCN ...
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Journal ArticleEnvironmental research · March 2021
Antibiotic resistance poses a major global health threat. Understanding emergence and dissemination of antibiotic resistance in environmental media is critical to the design of control strategies. Because antibiotic resistance genes (ARGs) may be aerosoliz ...
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Journal ArticleEnvironmental science & technology · March 2021
Fine particulate matter (PM2.5) with a higher oxidative potential has been thought to be more detrimental to pulmonary health. We aim to investigate the associations between personal exposure to PM2.5 oxidative potential and pulmonary ...
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Journal ArticleThe American journal of tropical medicine and hygiene · March 2021
Understanding the movement of antimicrobial resistance genes (ARGs) in the environment is critical to managing their spread. To assess potential ARG transport through the air via urban bioaerosols in cities with poor sanitation, we quantified ARGs and a mo ...
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Journal ArticleIndoor air · January 2021
Portable air cleaners are increasingly used in polluted areas in an attempt to reduce human exposure; however, there has been limited work characterizing their effectiveness at reducing exposure. With this in mind, we recruited forty-three children with as ...
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Journal ArticleInternational Journal of Developmental Disabilities · January 1, 2021
Background: Understanding the nature of work-related stress and burnout among intellectual disability care staff is important to protect the well-being of these workers and encourage their retention in the sector. Though reviews of specific aspects of this ...
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Journal ArticleJournal of exposure science & environmental epidemiology · November 2020
BackgroundIn highly polluted urban areas, personal exposure to PM2.5 and O3 occur daily in various microenvironments. Identifying which microenvironments contribute most to exposure can pinpoint effective exposure reduction s ...
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Journal ArticleThe Science of the total environment · October 2020
Evidence of exposure to enteric pathogens through the air and associated risk of infection is scarce in the literature outside of animal- or human-waste handling settings. Cities with poor sanitation are important locations to investigate this aerial expos ...
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Journal ArticleNature Sustainability · September 1, 2020
Air pollution and dust prevail over many regions that have rapid growth of solar photovoltaic (PV) electricity generation, potentially reducing PV generation. Here we combine solar PV performance modelling with long-term satellite-observation-constrained s ...
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Journal ArticleEnvironmental science & technology · September 2020
Fine particulate matter (PM2.5) and ozone (O3) may exert oxidative damage in the nose, which is hypothesized to be associated with worsened asthma symptoms. This study, hence, is to explore whether an oxidative stress biomarker, malon ...
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Journal ArticleSolar Energy · July 1, 2020
Deposition of particulate matter (PM) onto solar photovoltaic (PV) panels - known as soiling - has been estimated to reduce energy production by 10–40% in many regions of the world. Despite this, many key properties including soiling rates, PM source contr ...
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Journal ArticleJAMA pediatrics · June 2020
ImportanceFine particles (particulate matter 2.5 μm [PM2.5]), a ubiquitous air pollutant, can deposit in the small airways that play a vital role in asthma. It appears to be unknown whether the use of a PM2.5 filtration device can improve small ai ...
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Journal ArticleEnvironment international · May 2020
BackgroundThe importance of airway mechanics has been increasingly recognized in pediatric asthma. However, no studies have examined responses of airway mechanics to air pollution exposure in asthmatic children.MethodsIn this panel study ...
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Journal ArticleAtmospheric Chemistry and Physics · February 14, 2020
The abundance and speciation of primary biological aerosol particles (PBAP) is important for understanding their impacts on human health, cloud formation, and ecosystems. Towards this, we have developed a protocol for quantifying PBAP collected from large ...
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Journal ArticleEnvironmental research · February 2020
The health effects associated with human exposure to airborne fine particulate matter (PM2.5) have been linked to the ability of PM2.5 to facilitate the production of excess cellular reactive oxygen species (oxidative potential). Conc ...
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Journal ArticleAerosol and Air Quality Research · February 1, 2020
Residents of polluted cities frequently use indoor air purifiers in an attempt to improve their health by reducing their exposure to air pollutants, despite the fact that few studies have assessed these devices under relevant field conditions. Low-cost air ...
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Journal ArticleEnvironmental science. Processes & impacts · January 2020
High concentrations of ground-level ozone (O3) have been measured outdoors across China but there are limited measurements of O3 in microenvironments, including in homes, and for personal exposure. This highlights the need for cheaper ...
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Conference16th Conference of the International Society of Indoor Air Quality and Climate Creative and Smart Solutions for Better Built Environments Indoor Air 2020 · January 1, 2020Cite
Conference16th Conference of the International Society of Indoor Air Quality and Climate Creative and Smart Solutions for Better Built Environments Indoor Air 2020 · January 1, 2020Cite
Journal ArticleEnvironmental pollution (Barking, Essex : 1987) · October 2019
Increased public awareness of the health impacts of atmospheric fine particulate matter (PM2.5) has led to increased demand and deployment of indoor air cleaners. Yet, questions still remain about the effectiveness of indoor air cleaners on indo ...
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Journal ArticleAtmospheric Measurement Techniques · September 26, 2019
Wireless low-cost particulate matter sensor networks (WLPMSNs) are transforming air quality monitoring by providing particulate matter (PM) information at finer spatial and temporal resolutions. However, large-scale WLPMSN calibration and maintenance remai ...
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Journal ArticleBuilding and Environment · June 15, 2019
Exposure to VOCs causes a variety of adverse health effects, with much of the exposure occurring at home during sleep. The use of an air cleaner maybe an effective and convenient way to reduce associated exposures and health risks. Studies about the impact ...
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Journal ArticleInternational nursing review · June 2019
BackgroundThe 2008 financial crisis exacerbated an already mounting workforce challenge faced by most health services in the western world, namely the recruitment and retention of qualified nurses.AimThis paper examines two additional cha ...
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Journal ArticleAtmospheric Environment X · April 1, 2019
The United States Environmental Protection Agency held an international two-day workshop in June 2018 to deliberate possible performance targets for non-regulatory fine particulate matter (PM2.5) and ozone (O3) air sensors. The need f ...
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Journal ArticleJournal of nursing management · April 2019
AimTo review the evidence on the effects/impact of electronic nursing documentation interventions on promoting or improving quality care and/or patient safety in acute hospital settings.BackgroundElectronic documentation has been recommen ...
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Journal ArticleNurse researcher · March 2019
BackgroundThe European Union's general data protection regulation (GDPR) came into effect in May 2018. It is intended to prevent the unwanted sharing of private data and it has significant implications for healthcare research. A well-established r ...
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Journal ArticleInternational journal of environmental research and public health · February 2019
Railyards are important transportation hubs, and they are often situated near populated areas with high co-located density of manufacturing, freight movement and commercial enterprises. Emissions occurring within railyards can affect nearby air quality. To ...
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Journal ArticleInternational Journal of Aquatic Research and Education · January 1, 2019
This is an exploratory study of the impacts of drowning death on local communities and families in the Republic of Ireland as perceived by first responders. The impact of a death may be particularly stressful. The identified population of interest were mem ...
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Journal ArticleEuropean Journal of Education · December 1, 2018
The implementation within Europe of a credit system for vocational education and training known as ECVET is a European Commission priority. The potential for permeability between the ECVET and European Credit Transfer and accumulation System (ECTS) was for ...
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Journal ArticleIrish journal of psychological medicine · December 2018
ObjectivesGlobal concern around over the counter availability of codeine containing products and risk of misuse, dependence and related harms are evident. A phenomenological study of lived experiences of codeine misuse and dependence was undertake ...
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Journal ArticleAtmospheric Measurement Techniques · August 22, 2018
Low-cost particulate matter (PM) sensors are promising tools for supplementing existing air quality monitoring networks. However, the performance of the new generation of low-cost PM sensors under field conditions is not well understood. In this study, we ...
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Journal ArticleAtmospheric Chemistry and Physics · August 16, 2018
Given the sensitivity of the Arctic climate to short-lived climate forcers, long-term in situ surface measurements of aerosol parameters are useful in gaining insight into the magnitude and variability of these climate forcings. Seasonality of aerosol opti ...
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Journal ArticleJournal of Geophysical Research Atmospheres · June 16, 2018
Biomass burning produces smoke aerosols that are emitted into the atmosphere. Some smoke constituents, notably black carbon, are highly effective light-absorbing aerosols (LAA). Emitted LAA can be transported to high-albedo regions like the Greenland Ice S ...
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Journal ArticleThe Science of the total environment · June 2018
In many developing regions with poor air quality, the use of air filtration devices to clean indoor air is growing rapidly. In this study, we collected indoor, outdoor and personal exposure filter-based samples of fine particulate matter (PM2.5) ...
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Journal ArticleInternational journal of behavioral medicine · February 2018
PurposeThe purpose of this paper is to review the literature as this relates to theoretical perspectives of adherence to web-based interventions, drawing upon empirical evidence from the fields of psychology, business, information technology and h ...
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Conference15th Conference of the International Society of Indoor Air Quality and Climate Indoor AIR 2018 · January 1, 2018
Exposure to volatile organic compounds (VOCs) is associated with a variety of adverse health outcomes. In this study, indoor and outdoor concentrations of 640 VOCs and their associated cancer risks are investigated in 20 asthmatic children's homes in Shang ...
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Journal ArticleJournal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · January 2018
PurposeCodeine containing medicines can carry a number of health risks associated with the increase in reported misuse and dependence, however they are still readily available over the counter (OTC) in many countries. The aim of this novel study w ...
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Journal ArticleAtmospheric Measurement Techniques · December 21, 2017
Several types of filter-based instruments are used to estimate aerosol light absorption coefficients. Two significant results are presented based on Aethalometer measurements at six Arctic stations from 2012 to 2014. First, an alternative method of post-pr ...
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Journal ArticleInnovative Higher Education · December 1, 2017
There has been significant growth recently in online learning and joint programmes of education involving collaborative partnerships between and among higher education institutions in different jurisdictions. Utilising an interdisciplinary team model (Care ...
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Journal ArticleAtmospheric Chemistry and Physics · October 12, 2017
Knowledge of aerosol size and composition is important for determining radiative forcing effects of aerosols, identifying aerosol sources and improving aerosol satellite retrieval algorithms. The ability to extrapolate aerosol size and composition, or type ...
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Journal ArticleEnvironmental Science and Technology Letters · August 8, 2017
Atmospheric particulate matter (PM) has the potential to diminish solar energy production by direct and indirect radiative forcing as well as by being deposited on solar panel surfaces, thereby reducing solar energy transmittance to photovoltaics. Worldwid ...
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Journal ArticleJournal of clinical nursing · August 2017
Aims and objectivesTo explore paediatric nurses' views of caring for infants who have suffered nonaccidental injury.BackgroundChildren less than two years of age are at greater risk of serious abuse than those in any other age group. An i ...
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Journal ArticleInternational journal of nursing studies · July 2017
ObjectiveAs the global nursing workforce ages, developing a comprehensive understanding of the experiences, needs and values specific to older nurses is increasingly significant. This paper reviews the evidence with regard to the specific challeng ...
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Journal ArticleJournal of occupational health · May 2017
ObjectivesThis review sought to determine what is currently known about the focus, form, and efficacy of web-based interventions that aim to support the well-being of workers and enable them to manage their work-related stress.MethodA sco ...
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Journal ArticleBehavioural and cognitive psychotherapy · May 2017
BackgroundMisuse of codeine-containing medicines is an emerging public health issue.AimsWe present the application of Liese and Franz's (1996) cognitive developmental model of substance abuse to the trajectory from legitimate codeine use ...
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Journal ArticleQualitative health research · February 2017
Misuse of codeine-containing medicines is an emerging global public health concern. The majority of research has been conducted in developed countries (European Members States, Australia, the United States). This study aimed to gain an understanding of uni ...
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Journal ArticleInternational Journal of Mental Health and Addiction · February 1, 2017
Misuse of prescribed and over the counter (OTC) codeine containing medicines is an increasing public health concern in recent times. Studies have called for low threshold treatment services for individuals experiencing codeine dependence using buprenorphin ...
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Journal ArticleJournal of Geophysical Research · January 16, 2017
Remote sensing provides aerosol loading information, but to address climate and air quality model validation, there are additional needs to acquire aerosol composition information. In this study, a comprehensive aerosol composition model is established to ...
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Journal ArticleAtmospheric Environment · January 1, 2017
Although exposure to traffic emissions is frequently associated with negative health impacts, few studies have measured air pollution directly in-vehicle, and limited measurements of daily commuter exposure exist. This research, part of the Atlanta Commute ...
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Journal ArticleAtmospheric Environment · December 1, 2016
Roadside trash burning is largely unexamined as a factor that influences air quality, radiative forcing, and human health even though it is ubiquitously practiced across many global regions, including throughout India. The objective of this research is to ...
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Journal ArticleEnvironmental Research Letters · October 7, 2016
The Taj Mahal - an iconic World Heritage monument built of white marble - has become discolored with time, due, in part, to high levels of particulate matter (PM) soiling its surface (Bergin et al 2015 Environ. Sci. Technol. 49 808-812). Such discoloration ...
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Journal ArticleInternational Journal of Mental Health and Addiction · August 1, 2016
Misuse of codeine containing preparations is a public health concern given the potential for associated harms and dependence. This study explores the perspectives of community pharmacists in three regulatory regimes on issues of customer misuse of over-the ...
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Journal ArticleAtmospheric Environment · July 1, 2016
Measurements of wavelength dependent aerosol light absorption coefficients were carried out as part of the Southern Oxidant and Aerosol Study (SOAS) during the summer of 2013 to determine the contribution of light absorbing organic carbon (BrC) to total ae ...
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Journal ArticleJournal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · July 2016
PurposePromoting and ensuring safe use of codeine containing medicines remains a public health issue given the rise in reporting of misuse and dependence particularly in countries where available over-the-counter (OTC). The aim of this unique stud ...
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Journal ArticleBulletin of the American Meteorological Society · June 1, 2016
International Arctic Systems for Observing the Atmosphere (IASOA) activities and partnerships were initiated as a part of the 2007-09 International Polar Year (IPY) and are expected to continue for many decades as a legacy program. The IASOA focus is on co ...
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Journal ArticleJournal of Gender Studies · March 3, 2016
Irish mental health policy and care provision is criticised for being gender-neutral despite gender being present in almost every aspect of illness; from risk to protection; symptom interpretation; diagnosing, ideology and knowledge of illnesses. The aim o ...
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Journal ArticleNursing inquiry · March 2016
Taking as its starting point Carr's view that historical narrative reflects the preoccupations of the time in which it is written and Foucault's concept of consensual historical discourse as the outcome of a social struggle in which the victor suppresses o ...
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Journal ArticleEpilepsy & behavior : E&B · March 2016
Empowerment is now seen as an integral component of holistic practice and service design in healthcare, particularly as it relates to the improvement of quality of life for people with epilepsy. However, the literature suggests that empowerment is a neglec ...
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Journal ArticleNurse education today · January 2016
BackgroundIn spite of the number of studies available in the field and policy documents developed both at the national and the international levels, there is no reliable data available regarding the variation of roles occupied by clinical mentors ...
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Journal ArticleEpilepsy & behavior : E&B · January 2016
Effective education can support people with epilepsy to develop the attributes and skills required to function as equal partners with clinical service providers, make informed decisions, and competently self-manage their healthcare. However, despite knowle ...
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OtherActa pharmaceutica (Zagreb, Croatia) · December 2015
Codeine, a weak opiate, requires increased pharmacovigilance relating to availability, heterogeneous nature of misuse, dependence and associated harm. A scoping review of literature on codeine was conducted using Arksey & O'Malley's framework (1). Database ...
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Journal ArticleGeophysical Research Letters · November 16, 2015
Remote sensing observations suggest Greenland ice sheet (GrIS) albedo has declined since 2001, even in the dry snow zone. We seek to explain the apparent dry snow albedo decline. We analyze samples representing 2012-2014 snowfall across NW Greenland for bl ...
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Journal ArticleThe Science of the total environment · November 2015
One of the largest rail yard facilities in the Southeastern US, the Inman and Tilford yards, is located in the northwestern section of Atlanta, Georgia alongside other industries, schools, businesses, and dwellings. It is a significant source of fine parti ...
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Journal ArticleEnvironmental science & technology · September 2015
The Indo-Gangetic Plain is a region of known high aerosol loading with substantial amounts of carbonaceous aerosols from a variety of sources, often dominated by biomass burning. Although black carbon has been shown to play an important role in the absorpt ...
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Journal ArticleAtmospheric Chemistry and Physics · July 16, 2015
Chemical components of organic aerosol (OA) selectively absorb light at short wavelengths. In this study, the prevalence, sources, and optical importance of this so-called brown carbon (BrC) aerosol component are investigated throughout the North American ...
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Journal ArticleEpilepsy research · July 2015
BackgroundA challenge facing modern health care systems is to develop and implement new models of service that deliver increased capacity while providing a higher-quality, more cost-effective service within resource constraints. Incorporating the ...
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Journal ArticleAtmospheric Chemistry and Physics · May 11, 2015
Particle water and pH are predicted using meteorological observations (relative humidity (RH), temperature (T)), gas/particle composition, and thermodynamic modeling (ISORROPIA-II). A comprehensive uncertainty analysis is included, and the model is validat ...
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Journal ArticleACI Materials Journal · March 1, 2015
While there is an increasing interest in using photocatalytic cement-based materials, a lack of an appropriate standard procedure for testing the photocatalytic activity and efficiency of such materials makes comparisons among materials and data from diffe ...
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Journal ArticleAtmospheric Pollution Research · January 1, 2015
Agra and Kanpur are heavily polluted Indian cities and are the fourth and second largest cities in Uttar Pradesh State, respectively. PM2.5 was collected from December 2011 to May 2012 in Agra and from December 2011 to October 2012 in Kanpur eve ...
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Journal ArticleEnvironmental science & technology · January 2015
The white marble domes of the Taj Mahal are iconic images of India that attract millions of visitors every year. Over the past several decades the outer marble surfaces of the Taj Mahal have begun to discolor with time and must be painstakingly cleaned eve ...
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Journal ArticleJournal of Geophysical Research · January 1, 2015
Quantification of the black carbon (BC) and brown carbon (BrC) components of source emissions is critical to understanding the impact combustion aerosols have on atmospheric light absorption. Multiple-wavelength absorption was measured from fuels including ...
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Journal ArticleHealth Science Journal · January 1, 2015
Background: Shared decision making principles underpinned a co-production Quality Improvement (QI) initiative between service users, family/carers and healthcare professionals in the south sector community mental health service in the Republic of Ireland. ...
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Journal ArticleEnvironmental research · August 2014
BackgroundExposure to traffic pollution has been linked to numerous adverse health endpoints. Despite this, limited data examining traffic exposures during realistic commutes and acute response exists.ObjectivesWe conducted the Atlanta Co ...
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Journal ArticleAerosol science and technology : the journal of the American Association for Aerosol Research · May 2014
The Atlanta Commuters Exposure (ACE) Study was designed to measure in-cabin exposure to roadway particulate pollution and acute health response in a panel of adults with and without asthma following a 2-h scripted route along major highways in Atlanta. Thi ...
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Journal ArticleInternational journal of nursing education scholarship · April 2014
The Bologna Declaration and the subsequent processes is the single most important reform of higher education taking place in Europe in the last 30 years. Signed in 1999, it includes 46 European Union countries and aimed to create, a more coherent, compatib ...
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Journal ArticleGeophysical Research Letters · March 28, 2014
Little is known about the optical significance of light absorbing particulate organic compounds (i.e., brown carbon, BrC), including the importance relative to black carbon (BC) and influence on direct radiative forcing by aerosols. The vertical profile of ...
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Journal ArticleSensors and Actuators B Chemical · March 1, 2014
We report the characterization of a dispersive surface acoustic wave (SAW) delay line for the detection of ozone in air at parts-per-billion (ppb) concentrations. Augmenting recent developments in wireless SAW tag technology, we fabricated 435 MHz SAW devi ...
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Journal ArticleRemote Sensing of Environment · January 1, 2014
The albedo of the Greenland ice sheet plays a key role in the energy balance and climate of the arctic. Change in snow albedo values associated with changing climate conditions can be monitored remotely from satellite platforms viewing the entire Greenland ...
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Journal ArticleCement and Concrete Research · January 1, 2014
The photocatalytic oxidation and binding capacity of cement containing titanium dioxide nanoparticles under nitric oxide and nitrogen dioxide gas exposures were examined experimentally both in the presence and absence of ultraviolet (UV) light, to examine ...
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Journal ArticleAtmospheric Chemistry and Physics · December 19, 2013
Light absorbing organic carbon, often called brown carbon, has the potential to significantly contribute to the visible light-absorption budget, particularly at shorter wavelengths. Currently, the relative contributions of particulate brown carbon to light ...
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Journal ArticleAtmospheric Environment · December 1, 2013
Gaseous and particulate species from two prescribed fires were sampled in-situ, to better characterize prescribed burn emissions. Measurements included gaseous and fine particulate matter (PM2.5) species, particle number concentration, particula ...
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Chapter · December 1, 2013
This chapter examines gender and mental health service provision with particularreference to alcohol related disorders and sensitivity of care. The theoretical andempirical literature in relation to gender, mental health care provision and alcohol relatedi ...
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Journal ArticleCryosphere · August 7, 2013
The broadband albedo of surface snow is determined both by the near-surface profile of the physical and chemical properties of the snowpack and by the spectral and angular characteristics of the incident solar radiation. Simultaneous measurements of the ph ...
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Journal ArticleJournal of mental health (Abingdon, England) · August 2013
BackgroundThe Irish Government has adopted "Gender Mainstreaming" as a strategy to promote equal opportunities between women and men in its National Development Plan. While current mental health policy addresses the principle of partnership and so ...
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Journal ArticleJournal of the Air & Waste Management Association (1995) · June 2013
Railyards have the potential to influence localfine particulate matter (aerodynamic diameter < or = 2.5 microm; PM2.5) concentrations through emissions from diesel locomotives and supporting activities. This is of concern in urban regions where railyards a ...
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Journal ArticleAir Quality Atmosphere and Health · March 1, 2013
Prior studies have measured elevated ambient concentrations of hazardous metals in Beijing, attributable to coal combustion. The 2008 Olympic Games led to an intense investment in air pollution controls at the major power plants in the region, accounting f ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · February 2013
The composition and prevalence of microorganisms in the middle-to-upper troposphere (8-15 km altitude) and their role in aerosol-cloud-precipitation interactions represent important, unresolved questions for biological and atmospheric science. In particula ...
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Journal ArticleAtmospheric Chemistry and Physics · November 28, 2011
The mass absorption efficiency (MAE) of elemental carbon (EC) in Beijing was quantified using a thermal-optical carbon analyzer. The MAE measured at 632 nm was 8.45±1.71 and 9.41±1.92 m2 g-1 during winter and summer respectively. The ...
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Journal ArticleAtmospheric Environment · February 1, 2011
Carbonaceous aerosol is one of the important constituents of fine particulate matter (PM2.5) in southern China, including the Pearl River Delta (PRD) region and Hong Kong (HK). During the study period (October and December of 2002, and March and ...
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Journal ArticleNurse researcher · January 2011
AimQualitative data analysis is a complex process and demands clear thinking on the part of the analyst. However, a number of deficiencies may obstruct the research analyst during the process, leading to inconsistencies occurring. This paper is a ...
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Journal ArticleAtmospheric Chemistry and Physics · July 12, 2010
Intense anthropogenic emissions over the Indian sub-continent lead to the formation of layers of particulate pollution that can be transported to the high altitude regions of the Himalaya-Hindu-Kush (HKH). Aerosol particles contain a substantial fraction o ...
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Journal ArticleJournal of psychiatric and mental health nursing · June 2010
This paper seeks to advance the debate that considers critical realism as an alternative approach for understanding gender and mental health and its relatedness to mental health research and practice. The knowledge base of how 'sex' and 'gender' affect men ...
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ConferenceProceedings of IEEE Sensors · December 1, 2009
In this paper we report new work on the gravimetric detection of ozone at EPA and OSHA relevant concentrations (approximately 100 ppb) in filtered ambient air. We have extended our proof-of-concept work which used both quartz crystal microbalance (QCM) and ...
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Journal ArticleAtmospheric Environment · September 1, 2009
High-volume PM2.5 samples were collected at Summit, Greenland for approximately six months from late May through December of 2006. Filters were composited and analyzed for source tracer compounds. The individual organic compounds measured at Sum ...
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Journal ArticleJournal of psychiatric and mental health nursing · February 2009
A nurse prescribing scheme has recently been implemented within the Republic of Ireland. This paper reports on the views of community mental health nurses on nurse prescribing just prior to the implementation of the scheme. Data were gathered through a 13- ...
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Journal ArticleAtmospheric Chemistry and Physics · January 1, 2009
Gas and particle-phase organic carbon compounds soluble in water (e.g., WSOC) were measured simultaneously in Atlanta throughout the summer of 2007 to investigate gas/particle partitioning of ambient secondary organic aerosol (SOA). Previous studies have e ...
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Journal ArticleEnvironmental science & technology · December 2008
Ground-based measurements of meteorological parameters and water-soluble organic carbon in the gas(WSOCg) and particle (WSOCp) phases were carried out in Atlanta, Georgia, from May to September 2007. Fourteen separate events were observed throughout the su ...
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ConferenceACS National Meeting Book of Abstracts · December 1, 2008
Snow is potentially an excellent archive of aerosol deposition history to the polar regions of the world. Black carbon (BC) is an useful tracer of combustion processes and is likely to be relatively stable in snow for periods of time relevant for the recon ...
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Journal ArticlePolar Science · December 1, 2008
A method was developed to quantify a suite of organic compounds from snow melt water samples present at trace level concentrations, using a dichloromethane liquid-liquid extraction and GC-MS. Samples from a 3-m snow pit sampled in 2005 from Summit, Greenla ...
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Journal ArticleGeophysical Research Letters · September 28, 2008
This study characterizes the partitioning behavior of a significant fraction of the ambient organic aerosol through simultaneous measurements of gas and particle water-soluble organic carbon (WSOC). During the summer in Atlanta, WSOC gas/particle partition ...
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Journal ArticleGeophysical Research Letters · July 16, 2008
The sources, sinks, and overall importance of water-soluble organic carbon (WSOC) in the atmosphere are not well understood. Although the primary historical focus has been on particulate WSOC (WSOCp), here we also present results obtained using ...
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Journal ArticleAtmospheric Environment · July 1, 2008
The recently discovered active photochemistry in the surface layers of polar snow may complicate the interpretation of organic compounds found in ice cores. In order to better understand the transformation and cycling of organic species in Arctic surface s ...
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Journal ArticleNursing philosophy : an international journal for healthcare professionals · July 2008
This paper explores gender and mental health with particular reference to the emerging philosophical field of critical realism. This philosophy suggests a shared ontology and epistemology for the natural and social sciences. Until recently, most of the deb ...
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Journal ArticleAtmospheric Chemistry and Physics · May 5, 2008
Summit, Greenland is a remote Arctic research station allowing for field measurements at the highest point of the Greenland Ice Sheet. Due to the current reliance on diesel generators for electricity at Summit, unavoidable local emissions are a potential c ...
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ConferenceACS Division of Environmental Chemistry Preprints of Extended Abstracts · January 1, 2008
□ We developed a method to quantify tracq. levels of BC in snow. The approach should have general applicability to many aqueous systems. □ The method requires only a few mL of melted snow, unlike other approaches which demand many liters of snow. The appro ...
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Journal ArticleJournal of Geophysical Research Atmospheres · November 16, 2007
Carbonaceous particulate matter is ubiquitous in the lower atmosphere, produced by natural and anthropogenic sources and transported to distant regions, including the pristine and climate-sensitive Greenland Ice Sheet. During the summer of 2006, ambient pa ...
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Journal ArticleBiosensors & bioelectronics · October 2007
An enzyme-based monitoring system provides the basis for continuous sampling of organophosphate contamination in air. The enzymes butyrylcholinesterase (BuChE) and organophosphate hydrolase (OPH) are stabilized by encapsulation in biomimetic silica nanopar ...
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Journal ArticleAtmospheric Environment · September 1, 2007
Hong Kong's persistent unhealthy level of fine particulate matter is a current public health challenge, complicated by the city being located in the rapidly industrializing Pearl River Delta Region of China. While the sources of the region's fine particula ...
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Journal ArticleGeophysical Research Letters · August 28, 2007
Water-soluble organic carbon (WSOC), water-insoluble particulate organic carbon (WIOC), and particulate elemental carbon (EC) were measured simultaneously for the first time on the Greenland Ice Sheet in surface snow and in a 3-meter snow pit. Snow pit con ...
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Journal ArticleAtmospheric Environment · January 1, 2007
During the month of August 2004, the size-resolved number concentration of water-insoluble aerosols (WIA) from 0.25 to 2.0 μm was measured in real-time in the urban center of Atlanta, GA. Simultaneous measurements were performed for the total aerosol size ...
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Journal ArticleAtmospheric Chemistry and Physics · January 1, 2007
It has been shown that sunlit snow and ice plays an important role in processing atmospheric species. Photochemical production of a variety of chemicals has recently been reported to occur in snow/ice and the release of these photochemically generated spec ...
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Journal ArticleJournal of Geophysical Research Atmospheres · October 27, 2006
A significant fraction of the fine particulate matter in Hong Kong is made up of organic carbon. In order to quantitatively assess the contributions of various sources to carbonaceous aerosol in Hong Kong, a chemical mass balance (CMB) receptor model in co ...
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Journal ArticleAgricultural Systems · September 1, 2006
The attenuation of solar radiation by atmospheric aerosols simultaneously decreases the amount of radiation reaching the surface and increases the fraction of radiation which is diffuse. Decreasing the total amount of photosynthetically active radiation (P ...
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Journal ArticleAtmospheric Environment · June 1, 2006
Fine particulate matter (PM2.5) was measured for 4 months during 2002-2003 at seven sites located in the rapidly developing Pearl River Delta region of China, an area encompassing the major cities of Hong Kong, Shenzhen and Guangzhou. The 4-mont ...
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Journal ArticleJournal of Geophysical Research Atmospheres · May 16, 2006
As part of the Pollution des Vallées Alpines (PoVA) program, the number concentration and size distribution of the total PM2.5 population, as well as the subset that is water-insoluble, were measured in the Chamonix and Maurienne Valleys of the ...
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Journal ArticleEnvironmental science & technology · April 2006
The Pearl River Delta is a major manufacturing region on the south coast of China that produces more than dollar 100 billion of goods annually for export to North America, Europe, and other parts of Asia. Considerable air pollution is caused by the manufac ...
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Journal ArticleEnvironmental science & technology · July 2005
To date, there has been much research into the size distribution of ambient atmospheric aerosols, particularly either the total aerosol population or water-soluble ionic species such as sulfate or nitrate. Meanwhile, there have been virtually no size-resol ...
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Journal ArticleJournal of Geophysical Research Atmospheres · November 27, 2004
We evaluate the TRACE-P emission inventories for gaseous and particulate pollutants from East Asia using chemical measurements made at a rural site in China during the China-MAP Field Intensive in conjunction with a coupled regional climate/chemical transp ...
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Journal ArticleJournal of Geophysical Research D Atmospheres · October 16, 2004
The Gobi desert in northwest China is an important source of mineral aerosols over both eastern Asia and the northern Pacific Ocean. In order to determine the chemical, physical, and radiative properties of aerosols originating from the Gobi desert source ...
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Journal ArticlePure and Applied Chemistry · January 1, 2004
Emissions caused by the use of coal and by traffic have caused serious photochemical smog and aerosol pollution with unique characteristics in most Chinese cities. This report gives an overview of aerosol concentrations in China based on data obtained from ...
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Journal ArticleJournal of Geophysical Research Atmospheres · April 16, 2003
As part of the Atlanta Supersite 1999 study, aerosol radiative and related physical and chemical properties are examined on the basis of measurements of PM2.5 (aerosol particles with aerodynamic diameters, Dp, less than 2.5 μm) in urb ...
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Journal ArticleJournal of Geophysical Research Atmospheres · January 27, 2003
The Yangtze delta region of China is a key agricultural area that experiences relatively high aerosol loadings [Xu et al., 2002]. In order to characterize the aerosol radiative properties and estimate direct aerosol radiative forcing in this region, measur ...
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Journal ArticleAtmospheric Environment · January 1, 2003
Though recent studies suggest that aerosols may influence the Asian monsoons, limited knowledge exists regarding aerosol impacts on regional climate and air quality. To improve understanding of aerosols in the Himalaya, mass concentrations (PM10 ...
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Journal ArticleJournal of Geophysical Research D: Atmospheres · May 27, 2002
We consider two independently derived data sets. The first represents the annually averaged distribution of anthropogenic aerosols over East Asia as derived by a coupled regional climate/chemical transport model. The other is the annually averaged distribu ...
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Journal ArticleJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES · May 2002
{[}1] We consider two independently derived data sets. The first represents the annually averaged distribution of anthropogenic aerosols over East Asia as derived by a coupled regional climate/chemical transport model. The other is the annually averaged di ...
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Journal ArticleAtmospheric Environment · January 1, 2002
In order to understand the possible influence of aerosols on the environment in the agricultural Yangtze delta region of China, a one-month field sampling campaign was carried out during November 1999 in Linan, China. Measurements included the aerosol ligh ...
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ConferenceProceedings of SPIE the International Society for Optical Engineering · January 1, 2002
This study presents measurements of Aerosol Optical Depth (AOD) spectral dependence in the Ultraviolet (UV) (317-368 nm) from a USDA UV-Multi-Filter Rotating Shadow band Radiometer (UV-MFRSR) and an EPA Brewer spectrophotometer collocated at Boulder, Color ...
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Journal ArticleGlobal Biogeochemical Cycles · January 1, 2002
Scattering and absorption of sunlight by anthropogenic aerosols reduce the photosynthetically active radiation (PAR) incident upon the Earth's surface, but increase the fraction of the PAR that is diffuse. These alterations to irradiance may elicit conflic ...
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Journal ArticleGeophysical Research Letters · September 15, 2001
In this paper, a new mechanism is proposed by which aerosols decrease the amount of photosynthetically active radiation (PAR) available to plants for photosynthesis. The mechanism involves the scattering and absorption of PAR by water insoluble aerosol par ...
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Journal ArticleJournal of Geophysical Research Atmospheres · August 27, 2001
Beijing experiences air pollution such that the sky overhead is gray much of the time even on cloudless days. In order to understand the cause of this problem, the aerosol light scattering coefficient σsp and absorption coefficient σap
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Journal ArticleJournal of Geophysical Research Atmospheres · June 16, 2000
The extinction optical thickness of particles obtained from scattering and absorption coefficients measured by an airborne integrating nephelometer and particle soot absorption photometer, respectively, is compared with the aerosol optical thickness derive ...
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Journal ArticleJournal of Geophysical Research Atmospheres · March 16, 2000
Evaluation of the forcing of climate by aerosol scattering of shortwave radiation in cloud-free conditions (direct aerosol forcing) requires knowledge of aerosol optical properties on relevant spatial and temporal scales. It is convenient to measure these ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · November 1999
The effect of atmospheric aerosols and regional haze from air pollution on the yields of rice and winter wheat grown in China is assessed. The assessment is based on estimates of aerosol optical depths over China, the effect of these optical depths on the ...
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Journal ArticleGeophysical Research Letters · October 1, 1998
Radiative transfer models consistently overestimate surface diffuse downward irradiance in cloud-free atmospheres by 9 to 40% at two low altitude sites while correctly calculating direct-normal Solar irradiance. For known systematic and random measurement ...
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Journal ArticleGeophysical Research Letters · April 15, 1998
Before ice core chemistry can be used to estimate past atmospheric chemistry it is necessary to establish an unambiguous link between concentrations of chemical species in the air and snow. For the first time a continuous long-term record of aerosol proper ...
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Journal ArticleEnvironmental Science and Technology · March 1, 1998
Growth of hygroscopic aerosols near water surfaces is believed to enhance dry deposition rates, which are a strong function of particle size. Previous dry deposition models estimate hygroscopic growth by assuming equilibrium between aerosols and water vapo ...
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Journal ArticleGeophysical Research Letters · February 15, 1998
During a recent campaign at the NOAA CMDL monitoring station on Sable Island, Canada (43.93° N, 60.01° W) a dual-nephelometer humidigraph measured the hygroscopic growth factor of aerosol scattering, fRH(σsp), one of the key parameter ...
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Journal ArticleJournal of Geophysical Research Atmospheres · January 1, 1998
Daily atmospheric concentrations of participate oxalate measured at the Summit of the Greenland Ice Sheet are presented for the summers 1992 - 1995. We believe that four episodes of elevated concentrations are due to biomass burning plumes passing over the ...
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Journal ArticleJournal of Geophysical Research Atmospheres · December 27, 1997
Snow accumulation records from central Greenland are explored to improve the understanding of the accumulation signal in Greenland ice core records. Results from a "forest" of 100 bamboo poles and automated accumulation monitors in the vicinity of Summit a ...
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Journal ArticleEnvironmental Science and Technology · October 1, 1997
Ammonium nitrate is a semivolatile aerosol component under typical ambient conditions and thus difficult to measure. In the field, the aerosol scattering coefficient is usually measured width a nephelometer by heating the ambient aerosol to a low reference ...
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Journal ArticleChemical Engineering Communications · January 1, 1996
Particles and gases can deposit from the atmosphere to polar snow by several mechanisms. Dry deposition can be considered to consist of three steps: aerodynamic transport from the free atmosphere to the viscous sublayer near the surface, boundary layer tra ...
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Journal ArticleJournal of Geophysical Research Atmospheres · January 1, 1996
A Lagrangian radiation fog model is applied to a fog event at Summit, Greenland. The model simulates the formation and dissipation of fog. Included in the model are detailed gas and aqueous phase chemistry, and deposition of chemical species with fog dropl ...
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ConferenceNuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · January 1, 1996
A small deposit area low pressure impactor (abbreviated to SDI) has been developed and tested. The device has been designed specifically to collect size-fractionated aerosol samples in remote locations for subsequent chemical analysis by PIXE. The SDI is a ...
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Journal ArticleJournal of Geophysical Research: Atmospheres · August 20, 1995
Experiments were performed during the period May–July of 1993 at Summit, Greenland. Aerosol mass size distributions as well as daily average concentrations of several anionic and cationic species were measured. Dry deposition velocities for SO
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Journal ArticleGeophysical Research Letters · January 1, 1995
A simple model is presented to estimate atmospheric concentrations of chemical species that exist primarily as aerosols based on snow core/ice core chemistry at Summit, Greenland. The model considers the processes of snow, fog, and dry deposition. The depo ...
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Journal ArticleJournal of Geophysical Research · January 1, 1995
Experiments were performed during the period May-July of 1993 at Summit, Greenland. Aerosol mass size distributions as well as daily average concentrations of several anionic and cationic species were measured. Dry deposition velocities for SO2- ...
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Journal ArticleGeophysical Research Letters · January 1, 1994
Simultaneous measurements of the concentrations of soluble acidic species in the gas, aerosol and snow phases at Summit, Greenland were made during summer 1993. Mean concentrations of gas phase HCOOH, CH3COOH, and HNO3 (49±28, 32±17 a ...
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ConferenceGeochimica Et Cosmochimica Acta · January 1, 1994
Experiments were performed during June-July 1992 to determine the impact of dry deposition and fog deposition on surface snow chemical inventories. The fluxes of SO2-4, NO-3, Cl-, MSA, Na, Ca, and Al ...
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Journal ArticleMicrocontamination · February 1, 1987
The author focuses on a study of PFA and antistatic PFA tubing. The antistatic PFA material used has a surface resistivity of 10**1**1-10**1**2 OMEGA /sq. For comparison, plasticized PVC and copper tubing were also tested. Copper tubing was tested because ...
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