Article

Denbighshire County Council. Air Quality Review and Assessment

Authors:

Graham Aveyard

Environment Canterbury

ResearchGate has not been able to resolve any citations for this publication.

Cambrian View, Rhuallt 3.4-Mobile C&S Plant 01

Ltd Roadrunner Waste

Roadrunner Waste Ltd. Cambrian View, Rhuallt 3.4-Mobile C&S Plant 01/12/99

Article

Environment based targets vs technology

February 2002

H. Schipper

A discussion on environmental legislation covers the concern of the oil industry over the potential of a shift towards a more "technology driven" approach in realizing air quality targets; comparison between the large combustion plant directive and the EU National Emission Ceilings Directive, focusing on sulfur since it avoids the complexities related to NOx; approaches driving environmental ... [Show full abstract] initiatives, e.g., "available technology" and "environmental quality"; and variables influencing sulfur-reduction measures in EU.

Article

Strategic guidelines for sustainable urban air quality in Hong Kong [electronic resource] /

Thesis (M.Sc.)--University of Hong Kong, 2000. Includes bibliographical references (leaves 73-75) Mode of access: World Wide Web.

Chapter

An Ensemble Deep Learning Algorithm to Predict PM2.5 Concentration Levels in Bengaluru’s Atmosphere

July 2023

For the past few years, the air quality in Bengaluru has been hazardous. Particulate Matter 2.5 Air Quality Index (PM2.5 AQI) is the measure of air quality of the breathing air. Forecasting the PM2.5 content in the atmosphere is crucial to alert the inhabitants and also help governments in taking required actions. Deep learning architectures have proven to be efficient in predicting PM2.5. The ... [Show full abstract] objective of the research work intends to estimate PM2.5 in the next hour by the time series analysis of PM2.5 values in the Silk Board area of the Bengaluru region using the proposed ensemble time series algorithm. An experiment was conducted to evaluate the promising existing time series analysis models and an ensemble algorithm was designed considering best-performing models as base learners. The obtained Mean Absolute Error was 0.031 and the R2 score was 0.993.KeywordsDeep Learning (DL)Ensemble LearningGated Recurrent Unit (GRU)Long Short-Term Memory (LSTM)Particulate Matter 2.5 (PM2.5)Time-series analysis

Article

Full-text available

New particle formation in the fresh flue-gas plume from a coal-fired power plant: Effect of flue-gas...

June 2016 · Atmospheric Chemistry and Physics

Atmospheric emissions, including particle number and size distribution, from a 726 MWth coal-fired power plant were studied experimentally from a power plant stack and flue-gas plume dispersing in the atmosphere. Experiments were conducted under two different flue-gas cleaning conditions. The results were utilized in a plume dispersion and dilution model taking into account particle formation ... [Show full abstract] precursor (H2SO4 resulted from the oxidation of emitted SO2) and assessment related to nucleation rates. The experiments showed that the primary emissions of particles and SO2 were effectively reduced by flue-gas desulfurization and fabric filters, especially the emissions of particles smaller than 200 nm in diameter. Primary pollutant concentrations reached background levels in 200–300 s. However, the atmospheric measurements indicated that new particles larger than 2.5 nm are formed in the flue-gas plume, even in the very early phases of atmospheric ageing. The effective number emission of nucleated particles were several orders of magnitude higher than the primary particle emission. Modelling studies indicate that regardless of continuing dilution of the flue gas, nucleation precursor (H2SO4 from SO2 oxidation) concentrations remain relatively constant. In addition, results indicate that flue-gas nucleation is more efficient than predicted by atmospheric aerosol modelling. In particular, the observation of the new particle formation with rather low flue-gas SO2 concentrations changes the current understanding of the air quality effects of coal combustion. The results can be used to evaluate optimal ways to achieve better air quality, particularly in polluted areas like India and China.

View full-text

Article

Do you speak micro? It's safe to control

October 2005

C. Appleton

Significant aspects of flash-based microcontrollers, which controls and monitors increased vehicle complexity in electronic control units (ECU) are discussed. These units provide system designers with the versatility to implement software upgrades, monitoring and diagnostic capabilities, and distributed intelligence systems in response to customer requirements. These microcontrollers offer ... [Show full abstract] reprogrammability for a system designer to implement changes productively, thus keeping ECU development cost low. Flash microcontroller-based ECU are used throughout many vehicles in sub-systems including engine management, climate controls and air quality.

Article

Development of a process model for secondary organic aerosols /

Marie Moucheron

Thesis (M.S.)--University of Colorado, 1996. Includes bibliographical references (leaves [66]-69).

Article

News Briefing: Rail and Cars - Air quality

April 2017 · Engineering & Technology

J. Leob

Article

Full-text available

Health depreciation effect and medical cost effect of air pollution: based on multidimensional healt...

May 2022 · Air Quality Atmosphere & Health

Huan Liu

In parallel with the social economic development, the social cost of air pollution is increasing as well. The health depreciation effects and medical cost effects of air pollution are particularly prominent. Based on the traditional health effects of air pollution, this study constructs a health index system from three dimensions: physical health, mental health, and social adaptability. Based on ... [Show full abstract] the daily monitoring data of air quality of 122 Chinese cities, and by matching the continuous tracking survey data of the China Health and Retirement Longitudinal Study (CHARLS) in 2015 and 2018, this study constructs a panel model and uses the instrumental variable to empirically investigate the health depreciation effects and medical cost effects of air pollution. It was found that air pollution has a significant health depreciation effect. The effects of AQI (air quality index) on physical health, mental health, and social adaptability were − 0.6682, − 19.0686, and − 0.9816, respectively. Also, air pollution has a significant medical cost effect. The health depreciation and medical cost effects of CO, NO2, and SO2 are more remarkable. Moreover, the number of extreme pollution days has significant and adverse effects on both physical and mental health. Apparently, the number of severe and serious pollution days have higher impacts on social adaptability and medical expenses. In addition, there are significant group heterogeneity and regional heterogeneity in the health depreciation effects and medical cost effects of air pollution. Highlights • The impact of air pollution on health is multidimensional. • The impact of air pollution on the health of different residents is heterogeneous. • Different pollutants have different health effects and medical cost effects. • The government should pay attention to the decrease of social adaptability.

View full-text

Article

Full-text available

METODOLOGIA PARA LA APLICACIÓN DE MODELOS DE REGRESION DE USOS DEL SUELO EN LA ESTIMACIÓN LOCAL DE L...

December 2015

RESUMEN En este artículo se presenta una metodología que aplica modelos de regresión de usos del suelo (LUR) a datos de algunas posibles variables explicativas disponibles en enero de 2007 (usos del suelo, vías principales, milímetros de lluvia y decibeles de ruido) para estimar localmente la concentración promedia mensual del contaminante PM10 (μgm/m 3) en 10 sitios de monitoreo en la ciudad de ... [Show full abstract] Medellín-Colombia. La metodología usa sistemas de información geográfica (SIG), el método de mínimo cuadrados ordinarios (OLS) y regresiones geográficamente ponderadas. De 11 modelos obtenidos, el mejor fue una función lineal de la distancia a las vías principales con un R 2 de 0,79. En la primera parte se presentan las características de los modelos LUR. En la metodología se implementan los modelos LUR; se obtienen los resultados, se hace su análisis y finalmente se presentan las conclusiones. Palabras clave: Modelos de regresión de usos del suelo, contaminación del aire. ABSTRACT This article describes a methodology that applies the Land Use Regression models (LUR) to data of some potential explanatory variables available in January 2007 (land use, main roads, millimeters of rain and noise decibels) to estimate the local monthly average concentrations of PM10 (μgm/m 3) at 10 monitoring sites of the air quality network (RedAire) of Medellin-Colombia. The methodology used geographic information systems (GIS), the method of ordinary least squares (OLS) and geographically weighted regression. From 11 models obtained, the best was a linear function of the distance to the main roads with a R 2 of 0.79. The first part introduces the LUR models. In the methodology the LUR models are implemented, the results are obtained, an analysis is carried out and finally, the conclusions are presented.

View full-text

Article

Positive about RUC

April 2010

K. Mortimer

Keith Mortimer discusses how to regain a road pricing consensus with Carol Debell. Road pricing can bring appreciable benefits as part of a coordinated program of action focused on congestion, air quality, and infrastructure improvement. Keith first became involved in road user charging when he gained inclusion for his employer, SEA, in the DIRECTS project, early in the last decade. London's ... [Show full abstract] congestion charging zone was still hitting the headlines and a positive agenda included the demonstration of new technology-based solutions. Although plans for lorry user charging had been shelved, the launch of the Transport Innovation Fund, which tied new infrastructure funds to demand management measures, had attracted high interest. Keith points to the irony that the national newspaper which said that a reduction in traffic levels of at least 20-30% was essential to combat the 'invisible killer' of traffic emissions.

Article

Processing: MTBE faces an uncertain future

July 2000

K.D. Miller

The future of MTBE is in question. It is used mainly in the manufacture of reformulated gasoline as mandated by the CAAA and similar regulations introduced by CARB. It blends easily with oxygen, helps reduce CO in regions with air quality problems, and reduces olefins, benzene, and other aromatics in gasoline. However, UST leaks in several service stations caused MTBE to spread in water supplies, ... [Show full abstract] causing concern among the public. As a result, the clamor for a phaseout of MTBE began to spread around the country. Ethanol manufacturers took advantage of this opportunity and presented their product as a possible replacement to MTBE. Two possible MTBE scenarios are presented.

Article

Air Quality and Brain Health

March 2022 · JAMA The Journal of the American Medical Association

Anita Slomski

Denbighshire County Council. Air Quality Review and Assessment

No full-text available

Recommended publications

Environment based targets vs technology

Strategic guidelines for sustainable urban air quality in Hong Kong [electronic resource] /

An Ensemble Deep Learning Algorithm to Predict PM2.5 Concentration Levels in Bengaluru’s Atmosphere

New particle formation in the fresh flue-gas plume from a coal-fired power plant: Effect of flue-gas...

Do you speak micro? It's safe to control

Development of a process model for secondary organic aerosols /

News Briefing: Rail and Cars - Air quality

Health depreciation effect and medical cost effect of air pollution: based on multidimensional healt...

METODOLOGIA PARA LA APLICACIÓN DE MODELOS DE REGRESION DE USOS DEL SUELO EN LA ESTIMACIÓN LOCAL DE L...

Positive about RUC

Processing: MTBE faces an uncertain future

Air Quality and Brain Health