A yield model for walking catfish was produced using a combination of laboratory data and field data from culture in Thailand. The model was used for simulations to fulfil three objectives: to consolidate knowledge of fish physiology and aquaculture practices, to determine sensitivity of...Read more

Rapid and sensitive methods are needed for the detection of enteric viruses to ensure proper drinking water quality. Gene probes have been shown to be useful for this purpose. Previously, samples to be assayed were treated with a series of phenol-chloroform extractions to release the viral nucleic...Read more

A maintenance management system is not a set of technical procedures for improving maintenance performance, but a means of ensuring that the correct activities are scheduled and performed at the right time and in an efficient and cost-effective manner. This manual presents guidelines for developing...Read more

This paper describes a significant subset of the African irrigation experience, from traditional flood recession systems to large projects like Gezira (Sudan) and Bura (Kenya). The authors analyze the key technical, socio-economic and institutional factions that have helped fashion success or...Read more