Results 1 to 10 of about 727,566 (361)
n ...
J. D’Ans, O. Wedig
openalex +3 more sources
Nitrate and ammonium are the main nitrogen sources in agricultural soils. In the last decade, ammonium (NH4+), a double-sided metabolite, has attracted considerable attention by researchers.
María Begoña González-Moro+8 more
doaj +1 more source
In drinking water production from groundwaters, biological rapid sand filters (RSFs) can be used for ammonium and manganese removal in aerobic conditions. However, in some boreholes, a start-up duration of several months is required to reach the required
Thomas Etcheberry+6 more
doaj +1 more source
Ammonium is a fundamental nutrient for phytoplankton growth in seawater and is a key component of the microbial loop. Ammonium measured in parallel with other nutrients is crucial in understanding the small temporal scale changes in oceanographic ecology.
Christine Rees+9 more
doaj +1 more source
While freshwater cyanobacteria are traditionally thought to be limited by the availability of phosphorus (P), fixed nitrogen (N) supply can promote the growth and/or toxin production of some genera.
Benjamin J. Kramer+4 more
doaj +1 more source
Nitrogen isotope discrimination (Δ15N) may have utility as an indicator of nitrogen use in plants. A simple Δ15N-based isotope mass balance (IMB) model has been proposed to provide estimates of efflux/influx (E/I) ratios across root plasma membranes, the
Yi Hu+3 more
doaj +1 more source
Few studies explore the effects of nitrogen forms on exotic plant invasions, and all of them are conducted from the perspective of nitrogen form utilization without considering the effects of ammonium toxicity.
Zheng Zhang+4 more
doaj +1 more source
Ammonium (NH4-N) produces a paradoxical effect on submersed macrophytes because it is not only the preferred nitrogen source for the growth of plants but also threatens the growth of plants at high concentration.
Qing Yu+17 more
doaj +1 more source
Cost Effective Soft Sensing for Wastewater Treatment Facilities
Wastewater treatment plants are complex, non-linear, engineered systems of physical, biological and chemical processes operating at different timescales.
Maira Alvi+4 more
doaj +1 more source