Results 21 to 30 of about 1,105,768 (342)
Frontiers in Environmental Science, 2021 Phreatic groundwater plays a significant role in the water supply for human communities, especially in water scarce regions. This research was conducted to investigate the hydrochemistry and contamination of phreatic groundwater and their constraints on ...
Yong Xiao +9 more
doaj +1 more source
Revista Brasileira de Zootecnia, 2007 Este trabalho foi realizado com o objetivo de avaliar o efeito da inclusão de plantas de trevo (Trifolium spp) sob pastejo em sistema de integração lavoura-pecuária sobre a quantidade de N fixada, a produtividade, os componentes de rendimento da cultura ...
Tangriani Simioni Assmann +5 more
doaj +1 more source
Efficient Ammonia Electrosynthesis from Nitrate on Strained Ruthenium Nanoclusters.
Journal of the American Chemical Society, 2020 The limitations of the Haber-Bosch reaction-particularly high-temperature operation-have ignited new interests in low-temperature ammonia-synthesis scenarios.
Jie Li +18 more
semanticscholar +1 more source
A biomass burning source of C1- C4alkyl nitrates [PDF]
, 2002 We report the first observations of the emission of five C1-C4alkyl nitrates (methyl-, ethyl-, n-propyl-, i-propyl-, and 2-butyl nitrate) from savanna burning.
Atlas, E +6 more
core +1 more source
The sensitivity of marine N2 fixation to dissolved inorganic nitrogen
Frontiers in Microbiology, 2012 The dominant process adding nitrogen (N) to the ocean, di-nitrogen (N2) fixation, is mediated by prokaryotes (diazotrophs) sensitive to a variety of environmental factors.
Angela eKnapp
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2020 The two new pyrazineophanes, 5,7-dihydro-1H,3H-dithieno[3,4-b:3′,4′-e]pyrazine, C8H8N2S2, L1, and 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6′,7′-e]pyrazine, C12H16N2S4, L2, both crystallize with half a molecule in the asymmetric unit ...
Tokouré Assoumatine +1 more
doaj +1 more source
Acetate Activates Deep Subsurface Fracture Fluid Microbial Communities in Olkiluoto, Finland
Geosciences, 2018 Crystalline bedrock has been chosen for deep geologic long-term storage of used nuclear fuel in Finland. The risks generated by the deep subsurface microbial communities in these disposal sites need to be well characterised in advance to ensure safety ...
Hanna Miettinen +2 more
doaj +1 more source
Nitrate deposition to surface snow at Summit, Greenland, following the 9 November 2000 solar proton event [PDF]
, 2014 This study considers whether spikes in nitrate in snow sampled at Summit, Greenland, from August 2000 to August 2002 are related to solar proton events. After identifying tropospheric sources of nitrate on the basis of correlations with sulfate, ammonium,
Dibb, Jack E. +7 more
core +2 more sources
Global database of diffuse riverine nitrogen and phosphorus loads and yields
Geoscience Data Journal, 2021 Human activities have increased the input of nitrogen and phosphorus into riverine systems. These inputs can increase algal growth that degrades aquatic ecosystems.
Rich W. McDowell +3 more
doaj +1 more source
Temporal variability of nitrate transport through hydrological response during flood events within a large agricultural catchment in south-west France [PDF]
, 2010 The temporal variability of nitrate transport was monitored continuously in a large agricultural catchment, the 1110 km2 Save catchment in south-west France, from January 2007 to June 2009.
Oeurng, Chantha +2 more
core +3 more sources