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Limiting conditions for a sustained flame over condensed fuels : Analysis by experiments and stagnant layer theory

Ignition and extinction characteristics of a material determine whether a fire will be initiated and grow. In fire safety engineering, where modellers deal with a multitude of materials, simplified thresholds are commonly used to determine when ignition and extinction occur.Such a threshold is the critical mass flux, which describes when sufficient fuel vapour is produced to support sustained flam

Agricultural intensification and gender in Malawi, Tanzania and Zambia

The SAIRLA-supported AFRINT IV project has been collecting data on agricultural intensification from23 farming communities in seven regions in Malawi, Tanzania and Zambia since 2008. Policies in allcountries have a strong focus on maize intensification and also target women as recipients ofsubsidised farm inputs. During this time, data on maize shows that only in the Zambian region hasthere been a