Publications associées à Zone à faibles émissions

High concentration of black carbon in northern Pakistan: Characteristics, source apportionment and emission source regions

Atmospheric Black Carbon (BC) is one of the absorbing components of solar radiation which potentially affects human health and regional climate. In the current study, BC mass concentrations were regularly observed for pre-monsoon and monsoon seasons using ...

Elsevier2023

Swiss Energy System 2050: Pathways to Net Zero CO2 and Security of Supply - Basic report

Jean-Louis Scartezzini, Oliver Kröcher, Andrea Baranzini

This report aims at assessing pathways and formulating recommendations for the transformation of the Swiss energy system necessary to achieve the net zero greenhouse gas (GHG) emission target by 2050 (BFE 2017a) set by the Federal Council taking into accou ...

Swiss Academies of Arts and Sciences2022

Intentional oxygen oscillations on Pd/Al2O3 for enhanced methane removal from the exhaust of natural gas engines

Maneka Claire Roger

Natural gas (NG) is a suitable alternative to gasoline and diesel fuels to decrease the carbon footprint of the mobility and energy sectors. Although NG is considered a fossil fuel, methane (CH4), its main component, can be produced industrially from power ...

EPFL2022

The challenges of studying change in carbon-intensive urban consumption practices: Exploring the dynamics of practice change and of normative considerations in knowledge production

Franziska Meinherz

Problem. To reach international greenhouse gas (GHG) emission targets, the carbon intensity of urban resource and energy consumption must be reduced. Technological innovation alone is not sufficient: The practices that constitute urban household demand for ...

EPFL2021

Tracing China's external driving sources and internal emission hotspots of export-driven PM10 emission

Yue Lu, Qinli Lu

External trade could induce extensive air pollutant emissions among partners. PM10 (particles smaller than 10 mu m) is an important pollutant that could cause various problems. Few studies have researched the spatial heterogeneity of this export-driven pol ...

ELSEVIER SCI LTD2020

Reversible Oxygen Sensing Based on Multi-Emission Fluorescence Quenching

Esther Amstad, René M. Rossi, Efe Armagan, Claudio Toncelli, Akin Gürsoy

Oxygen is ubiquitous in nature and it plays a key role in several biological processes, such as cellular respiration and food deterioration, to name a few. Currently, reversible and non-destructive oxygen sensing is usually performed with sensors produced ...

2020

Green-Emitting Lead-Free Cs4SnBr6 Zero-Dimensional Perovskite Nanocrystals with Improved Air Stability

Mohammad Khaja Nazeeruddin, Giulia Grancini, Tom Theodorus Antonius Lummen, Valentin Ianis Emmanuel Queloz

We report the synthesis and characterization of nanocrystals of a novel fully inorganic lead-free zero-dimensional perovskite, Cs4SnBr6. Samples are made of crystals with an average size of similar to 20 nm with green emission centered around 530 nm. Inter ...

2020

Characterization and Modelling of the Emission Zone and Exciton Dynamics in Doped Organic Light-Emitting Diodes

Markus Regnat

Only recently organic light-emitting diode (OLED) technology has successfully managed the transition from research labs into the consumer market, taking a 60% share of the global mobile display market in 2018. The latest discovery of thermally activated de ...

EPFL2019

From COP21 pledges to a fair 2°C pathway

Marc Vielle, Frédéric Louis François Babonneau, Alain Haurie

At COP21, about 160 countries proposed the so-called INDCs that define GHG abatement objectives by 2030. While encouraging, these commitments are not ambitious enough to achieve the 2°C threshold by 2100, and further negotiations are needed for sharing the ...

2018

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: final emission line galaxy target selection

Jean-Paul Richard Kneib, Anand Stéphane Raichoor, Johan Comparat, Timothée Guy Olivier Delubac, Claudio Gorgoni, David Schlegel, Yi Wang, Arjun Dey

We describe the algorithm used to select the emission line galaxy (ELG) sample at z similar to 0.85 for the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digital Sky Survey IV, using photometric data from the DECam Legacy Survey. Our select ...

Oxford Univ Press2017

Emissions scenarios without measures 1990-2030

Philippe Thalmann, Marc Vielle, Bettina Schäppi

The goal of this study is to estimate the net impact of all measures implemented in the context of the Swiss energy and climate policies on CO2 emissions from combustion processes between 1990 and 2030. The study provides a projection of CO2 emissions unti ...

INFRAS EPFL2016

Towards a pre-design method for low carbon architectural strategies

Marilyne Andersen, Emmanuel Rey, Thomas Bernard Paul Jusselme, Endrit Hoxha, Arianna Brambilla, Stefano Cozza

To face climate change, Switzerland proposes the 2050 energy strategy by fixing greenhouse gas (GHG) emission targets for the built environment. Designers will then have to increase operating performances while inimizing embodied impacts. This represents a ...

2016

[C II] and 12CO (1-0) emission maps in HLSJ091828. 6+ 514223: a strongly lensed interacting system at z= 5.24

Jean-Paul Richard Kneib, Benjamin Yvan Alexandre Clement, Johan Richard

We present Submillimeter Array [ C II] 158 mu m and Karl G. Jansky Very Large Array (CO)-C-12(1-0) line emission maps for the bright, lensed, submillimeter source at z = 5.2430 behind A 773: HLSJ091828.6+514223 (HLS0918). We combine these measurements with ...

American Astronomical Society2014

Towards high brightness electron beams from multifilamentary Nb3Sn wire photocathode

Christoph Peter Hauri, Fernando Ardana Lamas

In order to find electron sources of low emittance and high quantum efficiency, single tip cathodes with a microstructured surface are investigated. Emission currents up to 310 A were obtained, by combining a 2 ns, 50 kV accelerating voltage pulse with a 2 ...

American Physical Society2013

Microfluidic photoelectrocatalytic reactors for water purification with an integrated visible-light source

Wuzhou Song, Ning Wang

This paper reports experimental studies using the photoelectrocatalytic effect to eliminate a fundamental limit of photocatalysis - the recombination of photo-excited electrons and holes. The fabricated reactor has a planar reaction chamber (10 x 10 x 0.1 ...

Royal Soc Chemistry2012

Optimal Methodology to Generate Road Traffic Emissions for Air Quality Modeling : Application to Ho Chi Minh City

Quoc Bang Ho

Growing population, consuming a large amount of energy such as combustion of fossil fuel, increasing pollutant emissions in the atmosphere are the threats to the sustainable development of our planet in general, and of the air quality in particular. Accord ...

EPFL2010

Global emission estimation by using probe vehicles

André-Gilles Dumont, Edward Chung, Emmanuel Bert

Air pollution is becoming a more and more important aspect for transportation, particularly car emission in urban area. The objective of this paper is to evaluate the global emission of a transport network based on probe car and sensor data. Probe vehicles ...

2006

Organic pollutants in Swiss compost and digestate

Rahel Christine Brändli

Composting (aerobic treatment of organic wastes) and digestion (anaerobic treatment of organic wastes combined with biogas production) are important waste management strategies with increasing significance in the European Union and Switzerland. Most of the ...

EPFL2006

Multi-model simulations of carbon monoxide: Comparison with observations and projected near-future changes

Isabelle Bey, Jérôme Drevet

We analyze present-day and future carbon monoxide (CO) simulations in 26 state-of-the-art atmospheric chemistry models run to study future air quality and climate change. In comparison with near-global satellite observations from the MOPITT instrument and ...

2006

Improving performances of a lean burn cogeneration biogas engine equipped with combustion prechambers

Daniel Favrat

Test of the unscavenged prechamber ignition system on a 150kW cogeneration engine fed with biogas are presented. The objective was to reach at least 36% in fuel conversion efficiency with exhaust gas emissions lower than the Swiss regulations limits (NOx, ...

2005