Results 21 to 30 of about 1,236,345 (391)

Photochemical production and evolution of selected C2-C5 alkyl nitrates in tropospheric air influenced by Asian outflow [PDF]

open access: yes, 2003
The photochemical production and evolution of six C2-C5 alkyl nitrates (ethyl-, 1-propyl-, 2-propyl-, 2-butyl-, 2-pentyl-, and 3-pentyl nitrate) was investigated using selected data from 5500 whole air samples collected downwind of Asia during the ...
Atlas, E   +9 more
core   +1 more source

Nitrate or not nitrate. That is the question

open access: yesPeer Community in Ecology, 2020
A recommendation of: Legay Nicolas, Grassein Fabrice, Arnoldi Cindy, Segura Raphael, Laine Philippe, Lavorel Sandra, Clement Jean-Christophe Studies of NH4+ and NO3- uptake ability of subalpine plants and resource-use strategy identified by their functional traits 10.1101 ...
openaire   +2 more sources

Effect of Nitrate, Acetate and Hydrogen on Native Perchlorate-reducing Microbial Communities and Their Activity in Vadose Soil [PDF]

open access: yes, 2011
The effect of nitrate, acetate, and hydrogen on native perchlorate-reducing bacteria (PRB) was examined by conducting microcosm tests using vadose soil collected from a perchlorate-contaminated site.
Hristova, Krassimira R.   +5 more
core   +2 more sources

Efficient Ammonia Electrosynthesis from Nitrate on Strained Ruthenium Nanoclusters.

open access: yesJournal 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

The sensitivity of marine N2 fixation to dissolved inorganic nitrogen

open access: yesFrontiers 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

Silver(I) nitrate two-dimensional coordination polymers of two new pyrazinethiophane ligands: 5,7-dihydro-1H,3H-dithieno[3,4-b:3′,4′-e]pyrazine and 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6′,7′-e]pyrazine

open access: yesActa 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

Dopaminium nitrate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2014
The asymmetric unit of the title salt [systematic name: 2-(3,4-dihydroxyphenyl)ethanaminium nitrate], C8H12NO2+·NO3−, contains two independent cations and two independent nitrate anions. The crystal structure consists of discrete nitrate ions stacked in layers parallel to (010).
Sofian Gatfaoui   +3 more
openaire   +3 more sources

Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes [PDF]

open access: yes, 2009
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads.
Alexander, Richard B.   +9 more
core   +2 more sources

Acetate Activates Deep Subsurface Fracture Fluid Microbial Communities in Olkiluoto, Finland

open access: yesGeosciences, 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

Comparison of nitrification inhibitors to restrict nitrate leaching in a maize crop irrigated under mediterranean conditions [PDF]

open access: yes, 2010
The aim of this paper was to compare dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) as inhibitors of ammonium oxidation and nitrate leaching after applying fertilizer to a maize (Zea mays L.) crop grown under Mediterranean conditions.
Arauzo, M.   +4 more
core   +3 more sources

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