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Pipe jacking is a construction process for the no-dig laying of pipes. Successful pipe jacking demands low skin friction between the ground and the jacked pipe. This is achieved with bentonite lubrication. The bentonite slurry fed into the annular gap fulfils several purposes. It stabilises the annular gap by supporting the surrounding ground and reduces friction contact between ground and jacked pipe. The Bentonite Handbook deals comprehensibly with the relevant aspects of annular gap lubrication: starting with the ground conditions, which are of decisive importance for lubrication, through the rheological properties of the bentonite slurry to the technical components of lubrication technology and lubrication strategy. The use of standardised measuring apparatus is described as well as mixing equipment and the automatic lubrication system. Overview tables with calculations and suggested values for bentonite consumption quantities depending on the prevailing ground conditions and the pipe jacking parameters complete the recommendations.
This book presents the main concepts and tools for the adoption of a biopsychosocial approach to psychotropic substances use and abuse management, prevention and treatment. It aims to provide resources for the design and implementation of health strategies and public policies to deal with psychotropic substances use in a way that fully recognizes the complex articulations between its biological, psychological and social aspects, taking these three dimensions into account to develop both health and social care policies and strategies aimed at psychotropic substance users. The book is organized in five parts. Part one presents a historical overview of psychotropic substances use throughout hum...
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Lasers have become an increasingly useful tool in conventional dental practice. Their precision and less invasive quality make them an attractive technology in esthetic and pediatric dentistry, oral medicine, and a range of other dental procedures. Lasers in Dentistry: Guide for Clinical Practice is a comprehensive, yet concise and easy-to-use guide to integrating lasers into conventional clinical practice. The book begins by providing the reader a thorough understanding of how lasers work and their varied effects on oral tissues. Subsequent chapters are organized by procedure type, illustrating common clinical techniques with step-by-step illustrations and case examples. In addition, each chapter provides an overview of the latest research for use in clinical practice. More comprehensive than at atlas yet practical and clinically oriented in its approach, Lasers in Dentistry is an essential tool for practitioners and students looking to broader their skill set in laser dentistry.
This book brings together the latest updates from various subareas of biomedical engineering, providing readers with a broad overview of the current state of the art and the technological trends to be refined in the coming years with the goal of improving human health. It shows the important advances in each subfield, rehabilitation technology, computational systems applied to health, and medical devices, with practical examples. It includes topics not covered in other books in the area, such as digital health, bioprinting, organs-on-a-chip, the open data paradigm, and electrical impedance tomography. It is a short and easy-to-read book, and provides bibliographic references for the reader t...
The 7-book Pellucidar series was written by the master storyteller, Edgar Rice Burroughs. Those books told the story of David Innes and Abner Perry's adventures in the savage land at the Earth's core. This new book by David Critchfield is the one and only guide to Pellucidar. It's full of information about the Earth's core: articles, maps, book summaries, family trees, languages, beliefs, publishing histories, a glossary of terms, and a list of articles written about Pellucidar. It's a must for fans of the series and a handy reference for Burroughs scholars and artists. The book is illustrated by Harry Roland with all new Pellucidar art. Visit Roland's website at www.harryroland.com Enjoy your trip below.