Concept

Observatoire de l'environnement

Publications associées (131)

Evaluating multimedia/multipathway model intake fraction estimates using POP emission and monitoring data

This paper presents a structured evaluation of a novel multimedia chemical fate and multi-pathway human exposure model for Western Europe, IMPACT 2002, using data for PCDD/F congeners. PCDD/F congeners provide an illustration of the potential use of POPs ( ...

2004

Ammonia monitoring at trace level using photoacoustic spectroscopy in industrial and environmental applications

Luc Thévenaz

An ammonia traces analyser based on photoacoustic spectroscopy is described. The system uses a CO2 laser and a properly designed resonant photoacoustic cell to achieve ammonia detection at sub-parts-per- billion (ppb) level. The instrument features unatten ...

Elsevier2004

Analysis of microbial community structures and functions in heavy metal-contaminated soils using molecular methods

Fabienne Gremion

The contamination of agricultural land and groundwater by heavy metals is essentially linked to human activities. A major problem with heavy metals is that they cannot be biodegraded and therefore reside in the environment for long periods of time if they ...

EPFL2003

Gaseous tracer diffusion from a point source as a site investigation method

David Werner

Transport modelling, risk assessment, and the evaluation of remediation strategies at sites contaminated with volatile organic compounds (VOCs) require the knowledge of gas-phase diffusion coefficients in unsaturated porous media. This thesis presents a ne ...

EPFL2002

Episode selection for ozone modelling and control strategies analysis on the Swiss Plateau

Hubert van den Bergh, Alain Clappier

An episode selection procedure was developed and applied to select sets of days representing characteristic meteorol. conditions leading to high ozone episodes over the Swiss Plateau. The selection procedure was applied to data extending from Jan. 1991 thr ...

2002

Remote Monitoring of Railway Equipment Using Internet Technologies

Alain Wegmann, Txomin Nieva

This paper outlines the main benefits of using Internet technologies for the remote monitoring of railway equipment. We present two prototypes of a remote monitoring tool for railway equipment. The first has a 2-tier architecture and is based on Java techn ...

2001

A Role-based Use Case Model for Remote Data Acquisition Systems

Txomin Nieva

Data Acquisition Systems (DAS) are the basis for building monitoring tools that enable the supervision of local and remote systems. DASs are complex systems. It is difficult for developers to compare proprietary generic DAS products and/or standards, and t ...

2001

A Role-based Use Case Model for Remote Data Acquisition Systems

Alain Wegmann, Txomin Nieva

2001

A Conceptual Model for Remote Data Acquisition Systems

Alain Wegmann, Txomin Nieva

2001

Factors controlling the distribution and transport of trichloroethene in a sand aquifer: Hydrogeology and results of an in situ transport experiment

David Andrew Barry

Groundwater underlying the Perth metropolitan area was found to be contaminated by extensive plumes of trichloroethene (TCE), ammonium and sulphate, and regions of high dissolved organic carbon concentration. At the study site, approximately 600 m downgrad ...

1997

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search