Polymer Devolatilization


Book Description

This work introduces the fundamental background necessary to understand polymer devolatilization. It elucidates the actual mechanisms by which the devolatilization of polymer melts progresses, and discusses virtually every type of devolatilization equipment available. The work also addresses devolatilization in various geometries and types of equipment, describing the use of falling strand, slit, single-screw, co-rotating and counter-rotating twin-screw devolatilization.




Geography and Genealogy


Book Description

Genealogy has become a widely popular pursuit, as millions of people now research their family history, trace their forebears, attend family reunions and travel to ancestral home sites. Geographers have much to contribute to the serious study of the family history phenomenon. Land records, maps and even GIS are increasingly used by genealogical investigators. As a cultural practice, it encompasses peoples' emotional attachments to ancestral places and is widely manifest on the ground as personal heritage travel. Family history research also has significant potential to challenge accepted geographical views of migration, ethnicity, socio-economic class and place-based identities. This volume is possibly the first ever book to address the geographical and scholarly aspects of this increasingly popular social phenomenon. It highlights tools and information sources used by geographers and their application to family history research. Furthermore, it examines family history as a socio-cultural practice, including the activities of tourism, archival research and DNA testing.




Pollution of Interstate Waters


Book Description




Pollution of Interstate Waters, Missouri River, Sioux City, Iowa


Book Description

"Hearing ordered by the Secretary of Health, Education, and Welfare concerning the pollution of the interstate waters of the Missouri River between Gavins Point Dam, South Dakota, and Omaha, Nebraska."--p. [1].