Results 51 to 60 of about 4,318 (176)
Avances en Ciencias e Ingeniería, 2020 In this work, endophytic bacteria from the nickel hyperaccumulating plant Leucocroton havanensis are characterized. Three strains belonging to Bacillus genus were used.
Alexander Govin +2 more
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Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion
Advanced Science, Volume 13, Issue 33, 15 June 2026.This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv +6 more
wiley +1 more source
A global dataset of nitrogen fixation rates across inland and coastal waters
Limnology and Oceanography LettersBiological nitrogen fixation is the conversion of dinitrogen (N2) gas into bioavailable nitrogen by microorganisms with consequences for primary production, ecosystem function, and global climate.
Robinson W. Fulweiler +21 more
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Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea
Frontiers in Marine ScienceBiological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu +17 more
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Nutrient limitation of primary productivity in the Southeast Pacific (BIOSOPE cruise) [PDF]
Biogeosciences, 2008 Iron is an essential nutrient involved in a variety of biological processes in the ocean, including photosynthesis, respiration and dinitrogen fixation. Atmospheric deposition of aerosols is recognized as the main source of iron for the surface ocean. In
S. Bonnet +12 more
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Diazotrophy in the Indian Ocean: Current understanding and future perspectives
Limnology and Oceanography Letters, 2023 Dinitrogen (N2) fixation provides the major source of reactive nitrogen in the open ocean, sustaining biological productivity. The Indian Ocean (IO) covers 22% of the ocean surface, while it only represents 1% of the global diazotroph database.
Subhadeep Chowdhury +12 more
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Nitrogen Reduction by Nanostructure‐Supported Ruthenium Catalysts
ChemCatChem, Volume 18, Issue 12, 26 June 2026.Zero‐valent ruthenium catalysts supported on multi‐walled carbon nanotubes (Ru0@CNTs) and on graphitic carbon nitride (Ru0@g‐C3N4) allow photocatalytic and electrochemical reduction of molecular nitrogen, characterized experimentally and with DFT calculations.
Rami Doukeh +10 more
wiley +1 more source
EcoEnergy, Volume 4, Issue 3, June 2026.This review systematically compares photocatalytic urea synthesis from various C (CO2, CO, CH3OH) and N (N2, NH3, NO3−) sources. It highlights C–N coupling mechanisms, key challenges, and future directions, offering a framework to guide rational catalyst design for sustainable, solar‐driven urea production.
Bo Ding +5 more
wiley +1 more source
Urea provides an important nitrogen source for microbial populations in an ultraoligotrophic sea
Limnology and Oceanography, Volume 71, Issue 6, June 2026.Urea is an organic nitrogen (N) compound directly utilized by both heterotrophic prokaryotes and some photoautotrophs. Reports of either ambient urea concentrations or urea uptake rates from the ultraoligotrophic eastern Mediterranean Sea are lacking. We investigated urea distribution and uptake in the upper water column in the Levantine basin during ...
Alon Blachinsky +7 more
wiley +1 more source
N2 Fixation in the Eastern Arabian Sea: Probable Role of Heterotrophic Diazotrophs
Frontiers in Marine Science, 2017 Biogeochemical implications of global imbalance between the rates of marine dinitrogen (N2) fixation and denitrification have spurred us to understand the former process in the Arabian Sea, which contributes considerably to the global nitrogen budget ...
P. Kiran Kumar +3 more
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