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ABSTRACT In High Intensity Focused Ultrasound (HIFU) therapy system, electrical impedance matching networks should be used between the ultrasound transducer and signal generator in order to maximize the electrical power transmission. Impedance matching networks are designed based on LC resonant networks and that can be analyzed by analytical design theory and smith chart design technique. Graphical method using smith chart is adapted to understand the concept. The reflective power should be reduced

INTRODUCTION 1.0 BACKGROUND TO STUDY Land use development patterns (also called urban form, built environment, community design, spatial development, and urban geography) is referred to as the human use of the earth’s surface, including the location, type and design of infrastructure such as roads and buildings. Land use patterns can have diverse economic, social and environmental impacts and some are more accessible and so reduce transportation costs to businesses and consumers. Transportation on

The Pennsylvania State University The Graduate School Department of Energy and Mineral Engineering STUDY OF CERCHAR ABRASIVITY INDEX AND POTENTIAL MODIFICATIONS FOR MORE CONSISTENT MEASUREMENT OF ROCK ABRASION A Thesis in Energy and Mineral Engineering by Amirreza Ghasemi  2010 Amirreza Ghasemi Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science August 2010 The thesis of Amirreza Ghasemi was reviewed and approved* by the following: Jamal Rostami Assistant