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The plant model is developed and an appropriate optimality criterion is selected to maintain strain, strain rate and temperature. Key words: MAntibacterial assay, eco-friendly, nanoparticles, silver nanoparticles, zone of inhibition Reference [1] Kim, S. The standard Arrehenious equation of 0.3% carbon steel is utilized to obtain an optimal deformation path such that the percentage of volume fraction recrystallization should be 1. Xia,"Microstructure and property of a medium carbon steel processed by equal channel angular pressing", materials forum volume 32 –2008, Edited by J. The presence of zone of inhibition clearly indicated the antibacterial activity of silver nanoparticles.

Proceedings of the international ceramic conference Australia. Olusola E O (1998) Investigation of Zungeru clay as refractory material for high temperature applications M.

In order to project a better representation of the territory, the samples were mined from ten cites each.

The mined clay samples from the ten cites were mixed properly and a representative specimen for test from that location was produced using the cone and quartering system as recommended by the American Society of Testing Materials (ASTM).

The results showed that the linear shrinkage improved from an average of 8.57% for the three samples for 0% sawdust to an average of 8.32% with 40% addition of saw dust, bringing them closer to the lower range of the international standard of 7-10%. In the other approach PID controller is employed for the plant model (microstructure development). "Application of control theory principles to optimization of grain size during hot extrusion," Materials Science and Technology, Vol 14, pp.25-31, Jan 1998.

Ltd, New Delh Abstract: l Capital of Abuja like linear shrinkage, solid density, apparent porosity and thermal conductivity were characterized with a view of studying the effect of sawdust on them. The state-space model together with an optimality criterion is used to control the percentage of volume fraction recrystallization using Linear Quadratic Regulator method.

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