A septic tank takes raw sewage in, allows the solids to settle (sludge) and allows the remaining liquid to flow into the surrounding soil by means of a soakaway. Scum on the surface is also prevented from leaving the tank. Microorganisms in the anaerobic environment in the tank digest the sludge and... scum. The system consists of several stages, supply to the tank, the tank itself and the soak field.
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A toolkit for behavioural and social communication in outbreak response
The whole book has 50.3 MB!!!!
To download chapter by chapter:
http://www.uib.no/cih/en/resources/neurology-in-africa
Africa is a vast continent and neurological disorders are a common cause of disability and death. This practical neurology textbook is specifically written for Sub-Saharan Africa.... The aim of this book is for students to gain an understanding of neurology, learn the necessary clinical skills and obtain sufficient knowledge to care for patients presenting with neurological disorders. Diagnosis in neurology is based on accurate history and physical examination and this book emphasizes these principles
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A manual intended for medical and other personnel responsible for humanitarian activities in armed conflicts. It covers the following topics: setting up a health-care system that meets the essential needs of war victims, particularly of displaced persons; public health tools most frequently used for... evaluation, establishment of priorities, analysis of possible activities and their follow-up; protecting war victims and aspects of humanitarian law related to health; and lastly, ethical problems
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This comprehensive manual features practical suggestions and creative ideas for including, recruiting and accommodating people with disabilities in international exchange programs. Building Bridges also addresses cross-cultural issues and international service projects. Includes an extensive resourc...e section. Find each chapter in FREE downloadable PDF and RTF formats
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A training manual for safe motherhood action groups (MAMaZ)
A global Review of evidence and practice
This book is aimed at policymakers in ministries of agriculture and national agricultural research institutes, as well as multilateral development banks and the private sector and provides guidance on various technology strategies and which to pursue as competition grows for land, water, and energy ...across productive sectors and even increasingly across borders. Climate change, population, and income growth will drive food demand in the coming decades. Food prices are also expected to significantly increase between 2005 and 2050 and the number of people at risk of hunger in the developing world would grow from 881 million in 2005 to more than a billion people by 2050. This book endeavors to respond to the challenge of growing food sustainably without degrading our natural resource bas
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A Guide for low income countries