الفهرس 
Chapter 1 : Introduction and Object of Investigation
Chapter 3 : characterization of the OxidesOnly 14 pages are availabe for public view
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Abstract
The objective of the present work was to investigate the influence of foreign salt additives,namely (NH2 2COon the structure and texture of CeO2and CuOproduced by thermal decomposition of their precursors.) A laser technique incorporating phase/Doppler particle analyzer (p/DPA) was employed for determining the size of small bubble and its rising velocity.simultaneously.for large bubble size, aphotographing technique was used to obtain the bubble properties.