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After the episode that occurred in London in December of 1952 in which more than four thousand people died as a result of acute exposure to atmospheric contaminants (particulate matter and sulfur dioxide, principally), there are no doubts that air quality has an important effect on the health of ...


Toxic air pollutants, also known as hazardous air pollutants, are those that are known or suspected to cause cancer or other serious health effects, such as birth defects or adverse environmental outcomes. The aim of this research was to predict air toxics related health risks due to different em...


Díaz-Robles, Luis AlonsoReed, Gregory D.Fu, J.S.[Emission Scenarios and the Health Risks Posed by Priority Mobile Air Toxics in an Urban to Regional Area: An Application in Nashville, Tennessee]Emission Scenarios and the Health Risks Posed by Priority Mobile Air Toxics in an Urban to Regional Area: An Application in Nashville, Tennessee

Box-Jenkins Time Series (ARIMA) and the multivariate linear models (MLM) have been important and popular linear tools in air quality forecasting during the past decade for urban areas. On the other hand, artificial neural networks (ANN) recently have been used successfully as a nonlinear tool in ...


Ortega-Bravo, J.C.Ramírez, M.Fu, J.S.Reed, G.D.[A hybrid ARIMA and artificial neural networks model to forecast particulate matter in urban areas: The case of Temuco, Chile]A hybrid ARIMA and artificial neural networks model to forecast particulate matter in urban areas: The case of Temuco, Chile

Temuco is a mid-size city representative of severe wood smoke pollution in southern Chile; however, little is known about the indoor air quality in this region. A field measurement campaign at 63 households in the Temuco urban area was conducted in winter 2014 and is reported here. In this study,...


Jorquera, HéctorBarraza, FranciscoHeyer, JohannaValdivia, GonzaloSchiappacasse Poyanco, LuisMontoya, Lupita D.[Indoor PM2.5 in an urban zone with heavy wood smoke pollution: The case of Temuco, Chile]Indoor PM2.5 in an urban zone with heavy wood smoke pollution: The case of Temuco, Chile

The particulate matter pollution, induced mainly by the domiciliary wood heating, vehicular traffic, and industrial activity, has become the main source of concern of urban air quality in cities of colder climates. The city of Temuco, 800 km to the south of Santiago, Chile, suffers from severe wo...


Sanhueza, P.A.Díaz-Robles, Luis AlonsoTorreblanca, M.A.Schiappacasse Poyanco, LuisSilva, M.P.Astete, T.D.[Particulate air pollution and health effects for cardiovascular and respiratory causes in Temuco City, Chile]Particulate air pollution and health effects for cardiovascular and respiratory causes in Temuco City, Chile

Air quality time series consists of complex linear and non-linear patterns and are difficult to forecast. Box-Jenkins Time Series (ARIMA) and multilinear regression (MLR) models have been applied to air quality forecasting in urban areas, but they have limited accuracy owing to their inability to...


Díaz-Robles, Luis AlonsoOrtega, J.C.Fu, J.S.Reed, G.D.Chow, Judith C.Watson, J.G.Moncada-Herrera, J.A.Díaz-Robles, Luis Alonso[A hybrid ARIMA and artificial neural networks model to forecast particulate matter in urban areas: The case of Temuco, Chile]A hybrid ARIMA and artificial neural networks model to forecast particulate matter in urban areas: The case of Temuco, Chile

The fine and ultra fine sizes of diesel particulate matter (DPM) are of greatest health concern. The composition of these primary and secondary fine and ultra fine particles is principally elemental carbon (EC) with adsorbed organic compounds, sulfate, nitrate, ammonia, metals, and other trace el...


Díaz-Robles, Luis AlonsoFU, J.S.Reed, G.D.[Modeling and source apportionment of diesel particulate matter]Modeling and source apportionment of diesel particulate matter

Mobile sources are among the largest contributors of NOx in the Great Smoky Mountains National Park region (GSMNP). In 2001, these sources contributed 45% of NOx emissions. From 1990 to 2001, the growth of vehicle miles traveled (VMT) increased 60% and 55% in neighboring Sevier and Blount countie...


Díaz-Robles, Luis AlonsoGreene, D.S.Doraiswamy, P.Reed, G.D.Fu, J.S.[The effect of switching mobile sources to natural gas on the ozone in the great smoky mountains national park]The effect of switching mobile sources to natural gas on the ozone in the great smoky mountains national park

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