Concept

National Ambient Air Quality Standards

Related publications (130)

Transport of gaseous pollutants around a human body in quiescent indoor environment

“Well-mixed” assumption often leads to inadequate prediction of the human exposure. In spaces that operate with a low air velocity, local airflows generated by occupants play predominant role for pollutant transport. The present study investigates the abil ...

2014

Sensitivity of air quality to potential future climate change and emissions in the United States and major cities

Athanasios Nenes, Pengfei Liu

Simulated present and future air quality is compared for the years 2006-2010 and 2048-2052 over the contiguous United States (CONUS) using the Community Multi-scale Air Quality (CMAQ) model. Regionally downscaled present and future climate results are deve ...

Elsevier Ltd2014

Implementation of a Scenario-based MPC for HVAC Systems: an Experimental Case Study

Maurizio Molinari, Luca Fabietti

Heating, Ventilation and Air Conditioning (HVAC) systems play a fundamental role in maintaining acceptable thermal comfort and air quality levels. Model Predictive Control (MPC) techniques are known to bring significant energy savings potential. Developing ...

2014

A hole-conductor-free, fully printable mesoscopic perovskite solar cell with high stability

Michael Graetzel, Xiong Li, Ying Yang

We fabricated a perovskite solar cell that uses a double layer of mesoporous TiO2 and ZrO2 as a scaffold infiltrated with perovskite and does not require a hole-conducting layer. The perovskite was produced by drop-casting a solution of PbI2, methylammoniu ...

American Association for the Advancement of Science2014

Thermal stability of the DSC ruthenium dye C106 in robust electrolytes

Michael Graetzel, Shaik Mohammed Zakeeruddin, Péter Kalman Péchy

We have investigated the thermal stability of the heteroleptic ruthenium complex C106 employed as a sensitizer in dye-sensitized solar cells. The C106 was adsorbed on TiO2 particles and exposed to 2 different iodide/triidode based redox electrolytes A and ...

Pergamon-Elsevier Science Ltd2014

Interaction of convective flow generated by human body with room ventilation flow: impact on transport of pollution to the breathing zone

Dusan Licina

This study aims to investigate the interaction between the human convective boundary layer (CBL) and uniform airflow from two directions and with different velocities. The study has two objectives: first, to characterize the velocity field in the breathing ...

2014

Mobile observatory: an exploratory study of mobile air quality monitoring application

Karl Aberer, Julien Eberle, Yongsung Kim, Erol Can Ün, Riikka Maria Vilhelmiina Hänninen

We present Mobile Observatory, a mobile air quality monitoring application that provides evaluation of air quality of the city of Zurich, Switzerland. As Mobile Observatory utilizes air quality data gathered by sensors mounted on around 10 trams in Zurich, ...

ACM Press2013

A model-based back-end for air quality data management

Karl Aberer, Julien Eberle, Yongsung Kim, Erol Can Ün

In this paper we present a hybrid model for real-time query processing over data stream collected by mobile air quality sensors. First, we introduce a novel indexing scheme for representing air quality and use it for generating and evaluating a static mode ...

ACM Press2013

Downscaling a global climate model to simulate climate change over the US and the implication on regional and urban air quality

Athanasios Nenes, Pengfei Liu

Climate change can exacerbate future regional air pollution events by making conditions more favorable to form high levels of ozone. In this study, we use spectral nudging with the Weather Research and Forecasting (WRF) model to downscale NASA earth system ...

2013

Impact of Operating Regime on Aviation Engine Emissions: Modeling Study

Pénélope Leyland

This work is focused on the numerical analysis of pollutant formation in an aviation gas turbine engine at different values of power setting. The analysis is conducted on the basis of a comprehensive approach treating the reactor net model for description ...

Amer Inst Aeronautics Astronautics2013

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.