Trees in agricultural and livestock development.

Livestock, Land Use and Agricultural Intensification in Sub-saharan Africa

This paper focuses on extracts from a recent comparative analysis of livestock and land use surveys across a range of agro-climatic conditions in sub-Saharan Africa, based on information from systematic low level aerial reconnaissance and complementary ground studies in Mali, Niger, Nigeria, Sudan and Tchad, between 1980 and 1993. Results indicate a highly significant relationship between lives...

Ammonia Emissions from Agricultural Operations: Livestock

The global abundance of N fertilizer has dramatically increased agricultural productivity. However, when N escapes to the atmosphere as ammonia (NH 3 ) gas, NH 3 loss can cause undesirable effects. In addition to a loss of a valuable resource, it can have negative impacts on air quality, ecosystem productivity, and human health. Animal production is the largest source of NH 3 emission in North ...

development and implementation of an optimized control strategy for induction machine in an electric vehicle

in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...

Plant Nutrient Management, Livestock Density, Agricultural Structure and the Environment

Ischaemic heart disease among livestock and agricultural workers.

BACKGROUND Agricultural workers are exposed to organic dust containing endotoxins, mites, and moulds. AIMS To compare the occurrence of ischaemic heart disease (IHD) among male and female livestock and agricultural workers with gainfully employed men and women in Sweden. METHODS Male and female livestock and agricultural workers were identified in the Swedish National Censuses of 1970 and 1...