Results 21 to 30 of about 3,419,892 (288)

Bedrock Nitrogen Weathering Stimulates Biological Nitrogen Fixation [PDF]

open access: yesThe Bulletin of the Ecological Society of America, 2019
AbstractGlobal ecosystem models suggest that bedrock nitrogen (N) weathering contributes 10–20% of total N inputs to the natural terrestrial biosphere and >38% of ecosystem N supplies in temperate forests specifically. Yet, the role of rock N weathering in shaping ecological processes and biogeochemical fluxes is largely unknown.
Katherine A. Dynarski   +3 more
openaire   +2 more sources

Experimental observation and energy performance calculations of potential oxidants O4−/0 and O6−/0 clusters

open access: yesFirePhysChem, 2022
In order to explore novel high-energy and green oxidants, oxygen-rich clusters O4−/0 and O6−/0 were investigated by laser-vaporization source, mass spectrometry and theoretical calculations.
Bin Yang   +5 more
doaj   +1 more source

A Family of Energetic Materials Based on 1,2,4-Oxadiazole and 1,2,5-Oxadiazole Backbones With Low Insensitivity and Good Detonation Performance

open access: yesFrontiers in Chemistry, 2020
Design and synthesis of new compounds with both high detonation performances and good safety properties have always been a formidable task in the field of energetic materials.
Qi Xue   +10 more
doaj   +1 more source

A secular increase in continental crust nitrogen during the Precambrian [PDF]

open access: yes, 2017
Recent work indicates the presence of substantial geologic nitrogen reservoirs in the mantle and continental crust. Importantly, this geologic nitrogen has exchanged between the atmosphere and the solid Earth over time. Changes in atmospheric nitrogen (i.
Goldblatt, Colin, Johnson, Benjamin W
core   +3 more sources

Revisiting the Synthesis of Functionally Substituted 1,4-Dihydrobenzo[e][1,2,4]triazines

open access: yesMolecules, 2022
A series of novel 1,4-dihydrobenzo[1,2,4][e]triazines bearing an acetyl or ester moiety as a functional group at the C(3) atom of the 1,2,4-triazine ring were synthesized.
Margarita A. Epishina   +2 more
doaj   +1 more source

Analysis of intermolecular interactions in homologous molecular crystals of energetic materials

open access: yesEnergetic Materials Frontiers, 2020
s: Crystal packing modes determine the energy and safety performance of energetic materials (EMs) to some extent. To deepen the understanding of the intermolecular interactions in the crystal packings, the homologous molecular crystals of energetic ...
Yilin Cao   +4 more
doaj   +1 more source

Nitrogen Backbone Oligomers [PDF]

open access: yesScientific Reports, 2015
AbstractWe found that nitrogen and hydrogen directly react at room temperature and pressures of ~35 GPa forming chains of single-bonded nitrogen atom with the rest of the bonds terminated with hydrogen atoms - as identified by IR absorption, Raman, X-ray diffraction experiments and theoretical calculations.
Hongbo Wang   +5 more
openaire   +5 more sources

Potential uptake of dissolved organic matter by seagrasses and macroalgae [PDF]

open access: yes, 2011
Dissolved organic nitrogen (DON) acts as a large reservoir of fixed nitrogen. Whereas DON utilization is common in the microbial community, little is known about utilization by macrophytes.
Bouma, Tjeerd J.   +8 more
core   +5 more sources

Symbiotic Nitrogen Fixation. [PDF]

open access: yesThe Plant Cell, 1995
that are expressed before the onset of nitrogen fixation and are involved in infection and nodule development. The products of the late nodulin genes are involved in the interaction with the endosymbiont and in the metabolic specialization of the nodule (Nap and Bisseling, 1990).
Mylona, P., Pawlowski, K., Bisseling, T.
openaire   +3 more sources

4-Amino-3-(1-{[amino(3-methyl-2-oxido-1,2,5-oxadiazol-4-yl)methylene]hydrazinylidene}ethyl)-1,2,5-oxadiazole 2-Oxide

open access: yesMolbank, 2022
Functionally substituted 1,2,5-oxadiazole 2-oxides (furoxans) are important pharmaceutical scaffolds used for the preparation of various pharmacologically active substances.
Margarita A. Epishina   +2 more
doaj   +1 more source

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