Results 101 to 110 of about 309,635 (167)

Vanadium complexes in relation to dinitrogen fixation. [PDF]

open access: yes, 2018
The aim of this work was to investigate the chemistry of vanadium in relation to dinitrogen fixation and consequently the literature concerning vanadium systems which reduce dinitrogen in protic media and the coordination compounds of vanadium(II) and ...
Bultitude, John.
core  

Proton and electron transfers to dinitrogen on iron phosphine complexes [PDF]

open access: yes, 2017
The conversion of atmospheric dinitrogen to ammonia is the starting point for the formation of all nitrogen-containing compounds on earth, and is consequently a hugely important chemical transformation.
Crawford, Andrew Dixie
core   +1 more source

Free atmospheric CO2 enrichment increased above ground biomass but did not affect symbiotic N2-fixation and soil carbon dynamics in a mixed deciduous stand in Wales [PDF]

open access: yes, 2011
Through increases in net primary production (NPP), elevated CO2 is hypothesizes to increase the amount of plant litter entering the soil. The fate of this extra carbon on the forest floor or in mineral soil is currently not clear.
A. R. Smith   +14 more
core   +2 more sources

15N-Isotope dilution as a measure of dinitrogen fixation by Azospirillum brasilense associated with maize

open access: yes, 1980
The classical difference method (based on Kjeldahl determinations) and the 15N-isotope dilution method to measure dinitrogen fixation by Azospirillum brasilense associated with maize in vitro were compared.
R. J. Rennie
core   +1 more source

Harvest management and cultivar effects on dinitrogen fixation and nitrogen transfer in forage legume-grass mixtures [PDF]

open access: yes, 1992
Field research was undertaken (1) to compare cultivars of birdsfoot trefoil (Lotus corniculatus L.) and red clover (Trifolium pratense L.) in terms of N[subscript]2 fixation and N transfer potentials and (2) to determine how harvest management (3-cut vs.
Farnham, Dale
core   +1 more source

Water use, yield, quality, and dinitrogen fixation of sainfoin and alfalfa under gradient irrigation [PDF]

open access: yes, 1988
Sainfoin (Onobrychis viciifolia Scop.) and alfalfa (Medicago sativa L.) are perennial forage legumes adapted to the dry, calcareous soils of the western United States.
Bolger, Terence Paul
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Photocatalytic reduction of dinitrogen to ammonia [PDF]

open access: yes, 1996
443-453The fixation of dinitrogen to ammonia via Haber's process is an energy intensive process and hence it is attractive to search for alternate pathways for the fixation of dinitrogen molecule under milder conditions.
Ranjit, K T, Viswanathan, B
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Dinitrogen-fixing plant symbioses for combined timber and livestock production [PDF]

open access: yes
The International Hill Land Symposium was held at Oregon State University in April 1983.Both herbaceous and woody plants capable of symbiotic dinitrogen fixation can be employed to increase the nitrogen fertility and productivity of combined forest and ...
Dawson, Jeffrey O.
core   +3 more sources

Chemical fixation of dinitrogen under mild conditions

open access: yes, 1978
Vita.Chemical fixation of dinitrogen has been performed under mild conditions in homogeneous and heterogeneous systems. In heterogeneous system electron donor-acceptor complexes of iron phthalocyanine, ruthenium phthalocyanine, osium phthalocyanine, poly-
Omiya, Shuichi
core   +1 more source

Biological dinitrogen fixation by selected soil Cyanobacteria as affected by strain origin, morphotype, and light conditions.

open access: yes, 2011
The potential for dinitrogen fixation by heterocystous cyanobacteria isolated from soils of different geographical areas was determined as nitrogenase activity (NA) using the acetylene reduction assay.
HRČKOVÁ, Kristýna
core  

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