The Sonic Surface in the Inter-Blade Channel of the Last Stage Rotor Wheel in the Steam Turbine of Large Output

The paper deals with sonic surface in a modern turbine wheel consisting of delta zeta jersey non-prismatic ultra long blades.The whole inter-blade channel is choked.Different positions and shapes of the sonic line in particular cross-sections along the span are observed.The sensitivity of sonic line formation to small changes of effective shape of

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Practices of Disciplinarity and Interdisciplinarity in Quebec Elementary Schools: Results of Twenty Years of Research

This article presents a synthesis of different research powell and mahoney bloody mary mix projects that have been carried out inthe province of Quebec, copyright over the past 20 years concerning the representations and practices ofelementary teachers regarding the relative importance given to subject matter and the use ofinterdisciplinarity in th

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