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In the frame of the French national research program PRIMEQUAL (inter-ministry program for better air quality in urban environments), measurements of outdoor and indoor pollution have been carried out in eight schools in La Rochelle (France) and its suburbs. The buildings were naturally ventilated by opening the windows, or mechanically ventilated, and showed various air permeabilities. Ozone, nitrogen oxides (NO and NO2), and airborne particle (particle counts within 15 size intervals ranging from 0.3 to 15 μm) concentrations were continuously monitored indoors and outdoors for two 2-week periods. The indoor humidity, temperature, CO2 concentration (an indicator of occupancy), window openings and building permeability were also measured. The temporal profiles of indoor and outdoor concentrations show ozone and nitrogen oxides behave differently: NO and NO2 indoor/outdoor concentration ratios (I/O) were found to vary in a range from 0.5 to 1, and from 0.88 to 1, respectively, but no correlation with building permeability was observed. On the contrary,I/Oratios of ozone vary in a range from 0 to 0.45 and seem to be strongly influenced by the building air-tightness: the more airtight the building envelope, the lower the ratio. Occupancy, through re-suspension of previously deposited particles and possible particle generation, strongly influences the indoor concentration level of airborne particles. However, this influence decreases with particle size, reflecting the way deposition velocities vary as a function of size. The influence of particle size on deposition and penetration across the building envelope is also discussed by analyzing theI/Oratios measured when the buildings were unoccupied, by comparing the indoor concentrations measured when the buildings were occupied and when they were not (O/Uratios), and by referring to previously published studies focussing on this topic. Except one case,I/Owere found to vary in the range from 0.03 to 1.79. AllO/Uare greater than one and increase up to 100 with particle size. Assessing children's total exposure requires the knowledge of outdoor and indoor air contaminant concentrations. The study presented here provides data on compared outdoor and indoor concentration levels in school buildings, as well as information on the parameters influencing the relationship between outdoor and indoor air quality. It may be used as a basis for estimating indoor concentrations from outdoor concentrations data, or as a first step in designing buildings sheltering children against atmospheric pollution. [ABSTRACT FROM AUTHOR]

Environmental empowering to control resource consumption and environmental impacts is critical to engage citizens to adopt more sustainable habits. This study demonstrates the potential benefits of innovative approaches based on sustainability indicators towards a low-carbon economy. A methodology to measure and promote sustainability in schools has been proposed and evaluated, aiming at showing the environmental performance and informing of potential environmental savings. The methodology, titled ClimACT, has two main purposes: measuring the environmental performance of schools through a school sustainability index based on measurable indicators in the areas of transport, procurement, green spaces, indoor air quality, energy, water and waste; and encouraging students, teachers and families towards an energy-efficient and low-carbon pathway through a structural procedure based on roles, activities and progress evaluation. The approach, applied to 39 pilot schools from Portugal, Spain, France and Gibraltar, achieved promising and encouraging results. All schools deployed the methodology successfully, achieving measurable environmental benefits in 95% of cases, with an average improvement of 10% in the global performance of schools after one year. Moreover, the 5112 surveys applied to school communities, before and after the methodology implementation, highlighted how the sustainable indicators had a significant influence on the daily lives of families, leading to improvements of their behaviour, with an average increase of 20% in indicators regarding good practices in transport, energy, water, waste and citizenship. The environmental empowering through measurable indicators is a step forward a low-carbon economy. This methodology is open and adaptable to all sectors and requirements., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

The present study combining the Eisenman French Joint Study and the Broussais Hospital experience is based upon 533 primary cardiac tumors which were operated on in France and by French-speaking teams during a period of about 25 years. The diagnosis of heart tumors was facilitated by the progressive development of new examination techniques. Echocardiography seems to be the simplest, safest, and the most reliable diagnostic method and is used more frequently then angiocardiography. Cardiac tumors occur at every age with a prevalence for females. About 10% of the surgically treated primary cardiac tumors were malignant (53 patients) with a constantly poor prognosis. The mean survival time of this collective after operation was only 1.5 years. 8% of the benign cardiac tumors were non-myxomatous (36), including fibromas, rhabdomyomas, and hamartomas. The mean age of this group was lower (21 years) than in the collectives with myxomas or with malignant cardiac tumors. Another characteristic of non-myxomatous tumors is the involvement of the ventricles by the neoplasm (88%). Complete resection of the tumor was possible in 75%, only 3 operative deaths occurred. Myxomas are the most common tumors of the heart, representing 83% of all primary cardiac tumors (444). Female patients were involved more often than males. The age of the patients ranged widely from 2.5 to 82 years. The typical localization of the myxomas was the left atrium (83%), followed by the right atrium (11%). In 5 cases myxomas were found multilocalized. Very often myxomas were mimicing valvular disease. In more than 30% peripheral embolization provoked the diagnosis. Only in 2% was the tumor totally asymptomatic.(ABSTRACT TRUNCATED AT 250 WORDS)