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57 items found (Showing 1 - 10)
  1. Key Resource 2013-06-01 Rick Burnette wrote an article for Issue 7(July 2010) of ECHO Asia Notes, titled “Charcoal Production in 200-Liter Horizontal Drum Kilns.” My article takes the charring process a step further by exploring the rapidly re-emerging world of biochar. Biochar is a form of charcoal, produced through...  
  2. Key Resource 2016-02-05 Until recently, firewood was taken for granted in northern Thailand. With vast forests full of many types of trees, upland households could afford to be choosy concerning the wood they used for cooking. However, in recent years, more and more communities are facing restricted access to forest...  
  3. Key Resource 2001-01-01 Access to clean drinking water remains one of the greatest challenges in the world. The BioSand Filter is one method that can be used for purifying water at the household level. With this filter, contaminated water is filtered through a natural biological layer and then layers of sand, pebbles...  
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  5. 1997-11-19 Discussion of possible disease organisms in manure. Many of us probably assume health problems originate when food is washed with contaminated water or because of poor human hygiene. However, it could also come from the use of manure as a fertilizer in the field.  
  6. 1999-03-19 Papaya seeds are part of traditional Ethiopian medicine for stomach worms.  
  7. 1995-10-19 Leaf Concentrateis an extremely nutritious food used to alleviate malnutrition. The process ofmaking LC separates the protein, vitamins, and minerals from the fibrous portion of fresh green leaves. LC is very rich in vitamin A, iron, calcium, high-quality protein, and other key dietary elements....  
  8. 2003-07-20 In response to the articles on leaf protein concentrate and on chaya in EDN Issue 78, a reader asked whether or not leaf protein concentrate (LPC) could safely be made from chaya.  
  9. 1999-07-19 ECHO and others have published articles about the many uses, nutritional content and hardiness of this drought-resistant "vegetable tree." This report contains valuable technical information and adds an important human face by reporting results of an evaluation of the project and interviews with...  
  10. 2004-04-20 Terra preta is very productive soil with long-lasting fertility—unusual in the tropics, where most soils are very weathered, highly acidic, and low in organic matter and essential nutrients. The key to terra preta soils long-term fertility seems to be charcoal; terra preta contains up to 70 times...