We report the detection of tryptophan at sub-ppb levels for a fluorometer based on Fresnel lenses and low-cost electronics. These fluorometers can be used to detect fecal contamination in drinking water, indicated by tryptophan-like fluorescence.

Development is largely perceived as a process of building capacities, hence empowering people through training is to able to handle their affairs by them selves. The research examined the practical significance of action oriented training as a basic approach for sustainable management of natural resources …

Agriculture is the main driver of the economy and the source of living for the majority of the population in Ethiopia. However, its performance has been poor and unable to feed the ever increasing population. Thus there is a need to change this trend and ensure the food security of the population. Agricultural …