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One question often raised when ozone professionals gather is “How much ozone capacity is installed?” Although the use of ozone for industrial purposes is growing, the largest use for ozone resides in the use of treatment of municipal drinking and wastewater. It is very difficult to summarize ozone capacity for industrial applications as much data are kept confidential. A number of reports have been published over the years on installed ozone capacity. Ozone capacity estimation is a moving target as plants are built and others removed from service for a number of reasons. This paper summarizes, using data available, ozone capacity for drinking water and wastewater. Focus is on the United States, Canada, Europe and Japan. IOA members and member companies are encouraged to submit additional data to enable this summary to be as accurate and relevant as possible. [ABSTRACT FROM PUBLISHER]

In 1950 in France, Dr Max Fourestier introduced the concept of dividing the school day into two parts. In the morning, students followed activities that were intellectual and classroom-oriented, and in the afternoon, they had physical education classes. This programme was implemented in Gambetta Elementary School in Vanves, a city on the outskirts of Paris (Fourestier was Gambetta's doctor). In 1953, he expanded the concept by organising innovative experiments such as the "forest class" and the "snow class", wherein nature was given a central role. Our study shows how Fourestier's international scientific reputation played an important role in the Franco-Canadian transfer of the school day concept; we also address the transfer of the concept of the place that physical education and nature held in the French school system. Our analysis identifies the cultural elements that facilitated the Canadian appropriation of a model that promoted an educational ecosystem. [ABSTRACT FROM AUTHOR]