particulate matter Articles
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Urban indoor-outdoor aerosol measurements in Portugal and the global warming scenario
Aerosols play a major role both in climate change and air quality. They affect climate by interfering with radiative transfer and the atmospheric temperature. Aerosol particulate matter has also been associated with various adverse health effects. Aerosol particles' number and size distributions were measured inside and outside the houses in the urban areas of Evora and Lisbon in Portugal. The ...
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Air contaminants modelling by use of several receptor-oriented models
Two data sets were apportioned by the use of several models (chemical mass balance (CMB), principal components analysis-absolute principal components scores (PCA-APCS), positive matrix factorisation (PMF) and UNMIX). Source apportionment were results derived from the CMB modelling applied to the data from Vienna point traffic source, paved road and crustal dust as the dominant contributors to the ...
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Criteria and Air-Toxic Emissions from In-Use Automobiles in the National Low-Emission Vehicle Program
The U.S. Environmental Protection Agency (EPA) implemented a program to identify tailpipe emissions of criteria and air-toxic contaminants from in-use, lightduty low-emission vehicles (LEVs). EPA recruited 25 LEVs in 2002 and measured emissions on a chassis dynamometer using the cold-start urban dynamometer driving schedule of the Federal Test Procedure. The emissions measured included ...
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The impact of international shipping on European air quality and climate forcing
Due to its dependence on fossil fuel combustion and the fact that it is one of the least regulated anthropogenic emission sources, emissions from the marine transport sector contribute significantly to air pollution and climate change. The main objective of this report is to provide a comprehensive review of recent literature and reports, taking into account expert knowledge, on the maritime ...
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Wildfire Smoke and Maintaining Indoor Air Quality
Summary Wildfires have emerged from a localized nuisance to an annual problem that affects millions. They generate a wide range of gas phase and particulate contaminants. The smoke composition varies based on the heat and relative completeness of the combustion and the great variety of material that can burn in the path of a wildfire. Wildfire smoke changes rapidly and significantly with time ...
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Methodologies for incorporation of synergistic effects in the calculation of the Pollutant Standards Index
The United States Environmental Protection Agency (EPA) developed the Pollutant Standards Index (PSI) in order to provide the public with an overall assessment of daily air quality. PSI values are determined from measured concentrations of five criteria air pollutants carbon monoxide, nitrogen dioxide, ozone, sulfur dioxide, and particulate matter (PM-10). In general, the PSI can be considered a ...
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Air Implementation Pilot - Lessons learnt from the implementation of air quality legislation at urban level
Why have a pilot project for air policy implementation? Almost three quarters of Europeans live in cities. The air quality in our cities is therefore of significant importance to the health of Europeans. Considerable progress has been made in the past twenty years in improving urban air quality, but issues remain. A number of different air pollutants such as nitrogen dioxide, particulate matter, ...
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Minimising Risks to Air Quality and Regulatory Compliance With Total Filter Management
It has been shown in recent studies that as much as 25% of the total site operating budget (excluding raw material costs) for a typical medium-large dosage-form manufacturing facility will be spent on compliance measures for internal quality systems and external regulatory activities. (1) Market realities indicate that the pharmaceutical companies will need to address the overall cost of ...
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Data Requirements Air Emissions/Off-Gases
Predictive modeling may be usefelected to represent the system (e.g., SVE treatment, incinerator, etc.), and site and contaminant informaul in estimating emissions from a site or treatment system. An appropriate theoretical model is stion is used to estimate gross emissions. Because many variables affect emission rates, this approach is limited by the representativeness of the model and by the ...
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Air as Clean as the Driven Snow
While California is the most populated state in the nation, it is also home to some of America’s most natural and pristine wilderness and recreation areas. One such venue is the Snow Summit Ski Resort in Big Bear Lake. Situated just over two hours from Los Angeles, Snow Summit is a fullservice winter resort that opened in 1952 and operates an average of 142 days a year. Though situated at an ...
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Air quality in Europe — 2012 report
'Air pollution is bad for our health. It reduces human life expectancy by more than eight months on average and by more than two years in the most polluted cities and regions. Member States must comply with EU air quality standards quickly and reduce air pollutant emissions,' Janez Potočnik, EU Commissioner for the Environment (EU, 2010a). Emissions of air pollutants derive from almost all ...
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How to Get Higher Acceptable Indoor Air Quality Anywhere
The quality of the indoor air we breathe is a concern for everyone, especially those in urban environments where contaminant and particle levels are higher due to nearly constant exposure to things like automobile and truck exhausts, construction, and fumigation. Unfortunately for most people, when it comes to the quality of the air in the buildings where they spend most of their time, they are ...
By Camfil Ltd
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Silent Killers, Covid 19 vs Outdoor Air Pollution
Covid a Silent Killer: In the year 2021 Around 1.31 million people have been infected around the world. There have been a total of 28,972 deaths. There could be no signs or symptoms in your patients. They might not even notice a difference. They could also develop headaches or nosebleeds without ever realising it. What is coronavirus ? Coronaviruses are a type of virus that can cause ...
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Bullfrog Power’s green energy and the new carbon pricing programs in Ontario and Alberta: your questions answered
Here at Bullfrog Power, the team is pleased to see increasing provincial, federal and international action on climate to accelerate the transition to a low-carbon economy. We’re supportive of a variety of both market-based and policy-based mechanisms to reduce carbon and fight climate change. We recognize that our customers may have questions about how these programs affect your decision to ...
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Semiconductor Clean Room Design Requirements 101
Semiconductors are in almost every electronic device, from everyday items like smartphones and coffee makers to complex automobiles, defense equipment, and spaceships. Manufacturers make semiconductors in special semiconductor cleanrooms because the wafers are extremely sensitive to environmental contaminants. ...
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Oizom Air Quality Monitoring Systems Installed in Smart Cities
Smart cities are developed with a vision of creating an advanced world. Where technology meets sustainability. Where people get a better quality of life with a harmonious community living. Government and people work hand-in-hand to make this happen. One of the main aspects of smart city solutions is a clean and green environment. With continuous evolution in an advanced way of living, man-made ...
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Types of Air Pollutants
Indoor air quality is vital to human health. Having high-quality indoor air helps humans live, breathe and work better. However, many common air contaminants can make their way into indoor environments, putting occupants at risk of both short- and long-term health effects. This guide to the types of air pollutants will help educate professionals on the sources of air pollutants that may ...
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Clean Air Day 2022
Hosted on the 16th of June every year, Clean Air Day (CAD) has become the UK’s largest clean air campaign. Run by the Global Action Plan, Clean Air Day aims to educate the British public on urban air pollution, raise awareness on the health consequences of air pollution, and introduce simple solutions to reduce it. Clean Air Day will help to integrate sustainable practices as the norm. The ...
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The two-way relationship between agriculture and air pollution
TL;DR - While air pollution is a well-known environmental crisis that negatively impacts many aspects of our society, it has a more nuanced relationship with agriculture. Not only can agriculture contribute to air pollution and climate change, but it can also experience lower crop yields, damaged crops, and other negative outcomes due to air pollution. We’re exploring both sides of this ...
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WESPS continue to deliver
Compliance with the increasingly stringent air pollution regulations of recent years is not the only reason forwardthinking industry leaders are adopting more sophisticated gas cleaning and air pollution control strategies. The desire to achieve higher performance efficiencies, control costs in a competitive marketplace, and stay ahead of the regulatory compliance curve is another driver of ...
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