Development studies
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Drying of Foods
The drying of food results in longer preservation and ease of transport (lighter). This technical brief describes some of the requirements for food drying to retain maximum nutrients and aesthetics, and summarizes information on the various drying equipment.
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Solar Photovoltaic Energy
This Technical Brief looks at the background of solar photovoltaic (PV) energy (in which sunlight is directly converted into electricity), the design of PV cell, modules and arrays, and configuration of PV systems.
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Mushroom Growing
Developing commercial cultivation of mushrooms is growing throughout Africa. This brief focuses on this practice in Zimbabwe.
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Solar Drying
Drying using sunshine - a brief description of the basic principles behind it and how to determine the rate of drying.
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Ginger Processing
Ginger is valued for the dried ginger spice and preserved, crystallised ginger.
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Fruit Preserves - Jams, Jellies and Marmalades
An introduction to small-scale jams, jellies and marmalades making, Known collectively as preserves.
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A Simple Retort
How to make and use a simple retort for separating gold-mercury amalgam.
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Agro-pesticide use in Sri Lanka
This study examines the present situation of pesticide use and the changes and trends over the past ten years with the objective of highlighting the issues that need to be addressed by policies.
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Chimney Stoves and Smoke Hoods
Nearly half the world cooks on three-stone fires or basic stoves causing indoor air pollution. This brief looks at ways to reduce the pollution by using chimney stoves and smoke hoods to let the smokey air escape outdoors.
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Stoves for Institutional Kitchens
Institutional stoves are used where large amounts of food need to be cooked. Typical examples are schools, hospitals, prisons and refugee camps.