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11 items found (Showing 1 - 10)
  1. 1987-01-01 These three improved stove construction and dissemination projects are augmented by two research projects. One concerns technical and scientific research to formulate mathematical rules for the construction of fuel efficient stoves. It is being conducted by the University of Eindhoven and the TNO...  
  2. 1990-01-01 Because chickens and ducks can utilize surplus grain, table scraps, garden trimmings, and by-products, they can provide a valuable food reserve. Some farming communities produce more grain than their people need. Of course the excess could be sold, but if not, it can be fed to poultry. Then, if...  
  3. 1990-01-01 This manual is designed to assist those who plan and implement small-scale agricultural projects. By promoting awareness of environmental concerns, the manual can increase the development worker's ability to design projects that are both environmentally sound and potentially more sustainable....
     
  4. 1986-01-01 Most animal science manuals have focused on the care and management of common breeds of domestic animals to achieve greater production. This manual emphasizes the environmental factors that affect livestock and livestock interactions. Standard livestock texts should be consulted for detailed...  
  5. 1990-01-01 The sheep was one of the earliest animal species to be domesticated, with evidence that they were kept and not hunted as early as 10,700 years ago in the gorge of the Greater Zab River in Northern Iraq. Wool has been found in the remains of 20,000-year old villages in Switzerland (Blakely and...  
  6. 1985-01-01 The purpose of this manual is to help development workers and others to become aware of the environmental factors that should be considered in planning small-scale energy projects that are environmentally sound and therefore more likely to be sustained. Environmentally sound planning includes the...  
  7. 1980-01-01 The objectives of the Montserrat Fuelwood/Charcoal/Cookstove Project were to: 1. Substitute local renewable cooking fuel from the forest for imported liquid fuels, 2. Use the forest resource wisely, and 3. Create local industry and employment. Specifically for the cookstove portion of the...  
  8. 1984-01-01 Once it is understood that gravity and water can be harnessed to produce energy, a study of methods to extract this energy efficiently can be undertaken. The purpose of this paper is to discuss several such methods in general terms. The paper provides a basic introduction to the science of water...  
  9. 1986-01-01 Roads vary from trails to major hard-surface highways. Depending on the local climate and materials available for construction, roads may sometimes be open to traffic for only part of the year. A year-round road is often more expensive to build, and may not always be necessary. As a general rule,...  
  10. 1989-01-01 This paper will describe the basic features of a medium- to large-scale hydroponics system and prefabricated greenhouse appropriate for cold climates. Some modifications for a system suitable for hot climates are also discussed. Home gardeners in any climate can use the basic theories contained...