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Polyelectrolytes and their Applications
Polyelectrolytes and their Applications is the second volume in the series 'Charged and Reactive Polymers'. The important areas of polyelectrolyte applications, i.e., biomedicine, water purification, petroleum recovery and drag reduction, are pre sented along with discussions of the fundamental principles of polyelectrolyte chem istry and physics. This book should be of interest to scientists such as physicians, biochemists, polymer chemists and chemical engineers involved in applications of these materials. The first part of the book is devoted to the basic properties of polyelectrolytes in general, namely to the factors influencing the chain conformation of charged polymers in solution and...
Bioactive Polymeric Systems
The vast array of libraries in the world bear mute witness to the truth of the 3000-year-old observation of King Solomon who stated " ... of making many books there is no end, and much study is a weariness of the flesh." Yet books are an essential written record of our lives and the progress of science and humanity. Here is another book to add to this huge collection, but, hopefully, not just another collection of pages, but rather a book with a specific purpose to aid in alleviating the "weariness of the flesh" that could arise from much studying of other journals and books in order to obtain the basic information contained herein. This book is about polymeric materials and biological activ...
Water-Soluble Polymers
Water-soluble polymers have been attracting increasing atten tion because of their utility in industrial applications of great current concern. Perhaps preeminent among these is their ability to flocculate suspended solids, e.g., wastes in municipal sew age-treatment plants or pulp in papermaking. other important appli cations are to aid in so-called secondary recovery of petroleum, to reduce turbulent friction of water, and as components of water-based finishes developed in response to environmental con straints. Some water-soluble polymers have shown interesting bio logic activity, which is being investigated further. This book is based on papers presented at a symposium held by the Americ...
Mechanistic Approaches to Interactions of Electric and Electromagnetic Fields with Living Systems
Although there is general agreement that exogenous electric and electromagnetic fields influence and modulate the properties of biological systems. there is no concensus regarding the mechanisms by which such fields operate. It is the purpose of this volume to bring together and examine critically the mechanistic models and concepts that have been proposed. We have chosen to arrange the papers in terms of the level of biological organization emphasized by the contributors. Some papers overlap categories. but the progression from ions and membrane surfaces. through macromolecules and the membrane matrix to integrated systems. establishes a mechanistic chain of causality that links the basic i...
Developments in Ionic Polymers—2
Ionic polymers, like elephants, are easier to recognise than to define. Several methods of classification have been attempted but none is wholly satisfactory because of the extreme diversity of ionic polymers, which range from the organic, water-soluble polyelectrolytes, through hydrogels and ionomer carboxylate rubbers, to the almost infusible inorganic silicate minerals. For this reason, a general classification is not only difficult, but has minimal utility. However, there are some characteristics of these materials that should be highlighted. The role of counterions is the significant one. These ions, either singly or as clusters, take part in the formation of ionic bonds which have a va...
DHEA in Human Health and Aging
Reduced production of DHEA associated with the diseases that accompany aging has led to its use as a nutritional supplement for antiaging, metabolic support, and other purposes. While animal studies have clearly shown substantial benefits of DHEA in combating various disease states, the effect of low levels of DHEA in humans is less established, and the mechanisms of action and potential involvement in illnesses remain unclear. DHEA in Human Health and Aging reviews the past ten years of research into this hormone and explores its potential for future study. With contributions from a cadre of international experts, this volume examines: The biology of DHEA relevant to health in humans Areas ...
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