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Available online: https://pub.norden.org/temanord2023-523/ Over the 15 past years, leakages of millions of plastic biocarriers - supports for bacterial growth used in certain types of Wastewater Treatment Plants have been reported in riverine and marine environments. In most cases, the biocarriers are not recovered, contributing to the issue of global plastic pollution. The objective of this report is to develop guidelines for the safe management of biocarriers based on proven-effective existing technical solutions and management measures, with the overarching goal of preventing releases of biocarriers in the marine and riverine environments. A holistic approach, encompassing every step of the biocarriers’ life cycle, helped to identify possible improvements in production, transportation, storage, engineering, facility operation, and biocarrier disposal.
The classic architectural drawing compendium now in a richly updated edition Today's most comprehensive compendium of architectural drawing types and methods, both hand drawn and computer generated, Architectural Drawing: A Visual Compendium of Types and Methods remains a one-of-a-kind visual reference and an outstanding source of guidance and inspiration for students and professionals at every level. This Fourth Edition has been thoroughly updated to reflect the growing influence of digital drawing. Features include: More than 1,500 drawings and photographs that demonstrate the various principles, methods, and types of architectural drawing Examples by an impressive array of notable archite...
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Violence in America: The History of Crime presents a wealth of new research on the long-term dynamics of murder and other crimes of violence. The contributors clearly identify and diagnose the painful circumstances of recurring epidemics of violent crime that have swept the American society over the past 150 years. Among the possible causes discussed are waves of immigration, the social dislocations of war, and growing concentrations of urban poverty. In addition, this engaging volume offers an evaluation of the traits of political assassins and an assessment of the pros and cons of gun control--and whether or not it will help to reduce crimes of violence. Surprisingly, the contributors to t...