(See Appendix A for a copy of the Student Lab Sheet and the procedures for preparing serial dilutions.) Students can use the same solutions from this lab in the eutrophication simulation in the next instructional activity, “Introduction to Nitrogen Pollution of Water by Agricultural Practices,”...
Singh M (2021) Fungi and nitrogen cycle: symbiotic relationship, mechanism and significance. In: Cruz C, Vishwakarma K, Choudhary DK, Varma A (eds) Soil Nitrogen Ecology. Springer International Publishing, Cham, Switzerland, pp 391–406 Chapter Google Scholar Singh JS, Gupta VK (2018) Soil...
In silico, both genes appeared to be functional (Supplementary TableS4). Viral NirK contained two copper-binding motifs and key active site residues required for nitrite reducing activity [97] (Supplementary Fig.S6A) and had a strongly supported (100% confidence) structural prediction as a copper...
There are two stable isotopes of nitrogen: 14N and 15N. By far the most common is 14N (99.634%), which is produced in the CNO cycle in stars. Of the ten isotopes produced synthetically, 13N has a half-life of ten minutes and the remaining isotopes have half-lives on the order of ...
Wildfire is a major driver of nitrogen (N) cycling and export from terrestrial to aquatic systems. While fire is a natural process in many watersheds, it can still degrade water quality by rapidly flushing N to streams. This can be particularly problematic in watersheds that experience high le...
Anthropogenic release of reactive nitrogen (Nr; all species of N except N2) to the global nitrogen (N) cycle is substantial and it negatively affects human and ecosystem health. A novel metric, the N footprint, provides a consumer-based perspective for Nr use efficiency and connects lifestyle...
B, oxygen consumption activity of Anf3 in the coupled reaction system. The reaction was started with NADPH and FNR, which consume a small amount of oxygen. Fd was then added, giving more consumption of oxygen via the superoxide side reaction pathway. Anf3 was added last, triggering a faster...
They also dominate the cell cycle, proliferation, and autophagy by controlling write; read; and erase (cell energy charge, reduction power, and modification of metabolic intermediates) on nucleosomes and apoptosis [27]. The main difference between the cancerous and cancer-adjacent tissues in this ...
Introduction The dynamic equilibrium of the global cycle of nitrogen has recently been ex- periencing a concerning disturbance. The last century has witnessed an increase in anthropogenic nitrogen that doubled the global cycle of reactive nitrogen [1]. The rise in world population contributes to ...
Furthermore, the seasonality of the N2 ice will lead to an erosive N2 cycle of deposition and sublimation in Pluto's impact craters [4, 5]. If this is occurring, the resulting morphological effects on the landscape should be identifiable in the data New Horizons has acquired. Examining ...