This paper presents the results of tests carried out on 7 different air cleaners : one with HEPA filter and the 6 others are ionizer models . The air cleaners efficiency against dust, smoke, pollen, emitted noise and emitted ozone was evaluated. The results present the HEPA model as the most performing whereas the ionizing air cleaners do a poor job of removing particles from the air and create significant levels of ozone.

Before conducting data analysis, the data collected through questionnaires must be validated. The three steps of that validation procedure are presented in this paper. The preliminary results are presented, that method appears simple and efficient.

For that national survey 567 French dwellings from 2003 to 2005 were investigated for IAQ measurements. The enormous collected data was associated to quality control system that operated before, during and after each measurement.

The aim of that study was to determine the causes of Sick House Syndrome . 60 sick houses in Japan were investigated during six summer form 2000 to 2005. That field survey revealed that indoor air was polluted with high carbonyl compounds and VOC concentrations over the guidelines. There is a clear relationship between indoor air pollution and the causes of symptoms in houses.

Three different air purification devices were investigated for that study : two photo catalytic oxydation (PCO) units and one gas-phase adsorption (GPA). The benefits of the GPA were significantly demonstrated. And this technology appears to be an attractive solution to improve aircraf cabin environment.

There is a complex relationship within the disciplines needed to to produce and perceive architecture. In this paper the author proposes a methodology combining quantitative and qualitative methods of analysis of spatial composition.Spatial design theory can contribute to the development of sustainability and the reduction of energy consumption in architecture and building.

That study was carried out in a general hospital ward in Hong Kong, equipped with ceiling-mixing type ventilation system to analyse the dispersion characteristics of expiratory droplets. A model has been used to simulate the motion tracks of the droplets and droplet nuclei. The results show that the dispersion characteristics were size-specific and highly affected by the ventilation air flow pattern. The laterally projected air jets should be avoided in ward ventilations.

This paper reports the findings of a pilot field study in two naturally ventilated child-care centres. Air temperatures, air velocities, turbulence intensity and air change rates were measured. The method and the results are presented

That study aims at characterizing the indoor air quality, mainly in terms of VOCs in nine schools of a littoral urban area in Portugal. Measurements and results are presented.

The survey has been carried out in two nursery schools located in Strasbourg to quantify both the formaldehyde levels and the air change rates of three classrooms investigated two days continuously, one day with and one day without the presence of children.The results show the impact of ventilation rate on formaldehyde levels.