In recent years, the technology of cryogenic comminution has been widely applied in the field of chemical engineering, food making, medicine production, and particularly in recycling of waste materials. Because of the increasing pollution of waste tires and the shortage of raw rubber resource, the recycling process for waste rubber products has become important and commercially viable. This technology has shown a great number of advantages such as causing no environmental pollution, requiring low energy consumption and producing high quality products. Hence, the normal crusher which was used to reclaim materials, such as waste tires, nylon, plastic and many polymer materials at atmospheric 12 temperature is being replaced by a cryogenic crusher. * In the cryogenic crusher, the property of the milled material is usually very sensitive to temperature change. When a crusher is in operation, it will generate a great deal of heat that causes the material temperature increased. Once the temperature increases over the vitrification temperature, the material property will change and lose the brittle behavior causing the energy consumption to rise sharply. Consequently, the comminution process cannot be continued. Therefore, it is believed that the cryogenic crusher is the most critical component in the cryogenic comminution system. The research on the temperature increase and energy consumption in the cryogenic crusher is not only to reduce the energy consumption of the crasher, but also to reduce the energy consumption of the cryogenic system.

Often we hear, "America is based on Biblical principles." But what are those principles and how do they work? SELF-EVIDENT TRUTHS is an analysis of the ideas and principles that formed the basis of the American philosophy of government and founding documents. It traces their source in the Bible, their development through history, their codification in the American founding documents and their application to issues today SELF-EVIDENT TRUTHS studies the WHYs of the American philosophy of government as the basic context for the constitutional mechanics. SELF-EVIDENT TRUTHS is written in simple terms to be suited for American civics and government classes. These ideas produced a people who were free but not in danger of anarchy and orderly but not because of civil force controlling them. They were at peace with one another and their unity and integrity were the engine of a prosperity that could ultimately be realized by anyone in the society. The civil structure was designed to protect this freedom. To the extent that the American people have stuck closely to these ideals, freedom and prosperity have bloomed. But whenever the people have drifted away from them, the nation has declined. SELF-EVIDENT TRUTHS must be studied and understood, then implemented personally by individuals across the society in order for liberty to thrive. Bill Burtness, MSEE 1973, has been Visiting Professor of American Philosophy of Government at the University of Pristina, Political Science faculty, Pristina, Kosovo, since 2004. He has his Master's degree from the University of Illinois, Urbana, Illinois, USA. Prof. Burtness has taught at University of the Nations campuses internationally since 1980 and has been resource instructor at the University of the Nations School of Government and International Studies in Lausanne, Switzerland. He teaches extensively on the foundations of sustainable freedom worldwide.