.... The objective of this study was to develop an artificial neural network modelling tool to predict nitrogen concentrations in streams using easily accessible data as model inputs. Genetic adaptive general regression neural network (GA-GRNN) models were applied to predict nitrate, ammonium, and total dissolved...

... post-disturbance value divided by the pre-disturbance value) for burned and harvested watersheds were 60 and 70% higher, respectively, than reference watersheds (P = 0.06). Runoff from the burned watershed remained elevated 6 years after fire. A trend for higher nitrate and ammonium...

...Annelie Hedström; Lea Rastas Amofah Natural zeolites as clinoptilolite may be used to recover wastewater ammonium, decrease the nitrogen content in the effluent from on-site sanitation systems and in wastewater treatment plants when nitrification–denitrification efficiency is low. The objective...