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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

An Unusual Presentation of Lupus Vulgaris and the Practical Usefulness of Dermatoscopy

We report a case report of lupus vulgaris (LV) presented on the extremities of an 80-year-old man. He was misdiagnosed as having psoriasis and referred to our department for a second-opinion evaluation. The discrepancy between the clinical manifestation which was misleading and the dermatoscopic findings raised the suspicion of an underlying granulomatous disease and we proceeded to skin biopsy. T

Synthesis, molecular docking simulation and enzymatic degradation of AB-type indole-based polyesters with improved thermal properties

We report the facile synthesis of a series of indole-based hydroxyl-carboxylate (AB-type) monomers by a one-step procedure. These monomers were successfully polymerized by melt-polycondensation to yield AB-type polyesters with a varied number of flexible methylene units in the backbones. These indole-based AB-polyesters showed decent thermal stability according to the TGA results (onset thermal de