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Everywhere in the world communities and nations organize themselves in relation to water. We divert water from rivers, lakes, and aquifers to our homes, workplaces, irrigation canals, and hydro-generating stations. We use it for bathing, swimming, recreation, and it functions as a symbol of purity in ritual performances. In order to facilitate and manage our relationship with water, we develop institutions, technologies, and cultural practices entirely devoted to its appropriation and distribution, and through these institutions we construct relations of class, gender, ethnicity, and nationality. Relying on first-hand ethnographic research, the contributors to this volume examine the social life of water in diverse settings and explore the impacts of commodification, urbanization, and technology on the availability and quality of water supplies. Each case study speaks to a local set of issues, but the overall perspective is global, with representation from all continents.
Everywhere in the world communities and nations organize themselves in relation to water. We divert water from rivers, lakes, and aquifers to our homes, workplaces, irrigation canals, and hydro-generating stations. We use it for bathing, swimming, recreation, and it functions as a symbol of purity in ritual performances. In order to facilitate and manage our relationship with water, we develop institutions, technologies, and cultural practices entirely devoted to its appropriation and distribution, and through these institutions we construct relations of class, gender, ethnicity, and nationality. Relying on first-hand ethnographic research, the contributors to this volume examine the social life of water in diverse settings and explore the impacts of commodification, urbanization, and technology on the availability and quality of water supplies. Each case study speaks to a local set of issues, but the overall perspective is global, with representation from all continents. John R. Wagner is an Associate Professor of Anthropology at the University of British Columbia, Okanagan. He conducts research in Canada, the United States and Papua New Guinea and has published several journal articles on water governance in the Okanagan Valley. In 2007 he was lead guest editor of "Customs, Commons, Property and Ecology," a special edition of "Human Organization" devoted to an analysis of Pacific Island customary property rights systems. Recent publications include "Water and the Commons Imaginary" in the Public Anthropology Forum of "Current Anthropology" (2012).
Multilayer Flexible Packaging, Second Edition, provides a thorough introduction to the manufacturing and applications of flexible plastic films, covering materials, hardware and processes, and multilayer film designs and applications. The book gives engineers and technicians a better understanding of the capability and limitations of multilayer flexible films and how to use them to make effective packaging. It includes contributions from world renowned experts and is fully updated to reflect the rapid advances made in the field since 2009, also including an entirely new chapter on the use of bio-based polymers in flexible packaging. The result is a practical, but detailed reference for polymeric flexible packaging professionals, including product developers, process engineers, and technical service representatives. The materials coverage includes detailed sections on polyethylene, polypropylene, and additives. The dies used to produce multilayer films are explored in the hardware section, and the process engineering of film manufacture is explained, with a particular focus on meeting specifications and targets. In addition, a new chapter has been added on regulations for food packaging - including both FDA and EU regulations.
The second edition of "Extrusion" is designed to aid operators, engineers, and managers in extrusion processing in quickly answering practical day-to-day questions. The first part of the book provides the fundamental principles, for operators and engineers, of polymeric materials extrusion processing in single and twin screw extruders. The next section covers advanced topics including troubleshooting, auxiliary equipment, and coextrusion for operators, engineers, and managers. The final part provides applications case studies in key areas for engineers such as compounding, blown film, extrusion blow molding, coating, foam, and reprocessing. This practical guide to extrusion brings together both equipment
and materials processing aspects. It covers basic and advanced
topics, for reference and training, in thermoplastics processing in
the extruder. Detailed reference data are provided on such
important operating conditions as temperatures, start-up
procedures, shear rates, pressure drops, and safety.
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