The increasing use of powder metallurgy techniques to make an almost infinite variety of materials and products places greater emphasis on utilization of sophisticated experimental techniques. Usually research and development efforts initiate the use of newly developed equipment and analytical procedures. Indeed, the contents of this book are strongly linked to research endeavors, in both the academic and industrials worlds. However, this volume can serve a much needed function in industrial applied powder metallurgy. Although many researchÂ ers will find the contents of great value, the technical personnel more involved with production, quality control, customer services and product design now have at their dispoÂ sal a means to learn about the potential uses of several very important techniques. With today's "knowledge explosion" the present set of papers greatly facilitates the comprehension and adoption of new procedures. If powder metallurgy is to continue its rapid rate of growth in virtually all segments of industry, then the transition of modern equipment and procedures from tools of research and development laboratories to everyday plant operations and applications must be hastened. The editors hope that this volume aids in this process, as well as assisting students and researchers by providing a ready source of up-to-date useful information.
I believe that Heaven is a virtual realm - a world made of energy, a place where the soul can live out its eternal existence. What will this heaven like? What happens when we die? Where do our spirits go at the moment our bodies cease to function? These are questions that great minds have pondered throughout the ages. We have gained insights into what heaven might be like from accounts of those who have had near death experiences and have come back to recount those experiences, while Jesus and the Bible have told us what to expect when we enter the kingdom and heaven. We know we must go to Church and that we must believe and have faith in God and in an everlasting life after death. However, we still have many unanswered questions. What happens to our memories when we leave our bodies and the brains that store our memories? How will our spirits be held together is in heaven? Will our spirits evaporate in Heaven? What will I be doing in Heaven? How do we communicate in Heaven? Will we be reincarnated and return to Earth if we are not ready to enter God's Kingdom? There are so many unanswered questions about heaven which we will ponder and explore together in this book. I will share my own first-hand accounts as well and share with you what I perceive to be the workings of the spirit and what we might expect when we enter into Gods Kingdom.
Recent years have seen remarkable advances in the devel- ment of techniques that have direct applications in neurological research. In consequence, the circulatory and metabolic status of the brain can be measured and correlated with changes m structure often noninvasively, m the same - and integrated function, perimental subIect This has stimulated an increased awareness of the complexity, under normal and pathological conditions, of the interdependence of these factors. Through the application of the methods described in this volume, however, these complexities can now be analyzed. The chapters m this volume present methodological - scriptions of some of the most powerful "physicochemical" methods for studymg the brain. Multidisciplmary teams are - quired to develop some of these methods, which are extremely expensive m terms of capital equipment costs and technological personnel support Thus, they will likely remain restricted to malor medical research centers Nevertheless, many recent concepts of brain responses to disease are a result of their application We have been fortunate m convincing active, leading sci- tists to contribute to this volume. The descrrptions of the basic prmciples of each method, and its applications and limitations, are derived primarily from their personal experiences. The first two chapters (Rowan, Auer) deal with methods for assessing brain hemodynamics. The two subsequent chapters (Greenberg; He- covitch) describe autoradiography and positron emission tomog- phy techniques, which provide quantitative measurements of brain metabolism as well as blood flow.
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