Results 41 to 50 of about 309,635 (167)

Catalytic Reduction of Dinitrogen to Ammonia and Hydrazine Using Iron–Dinitrogen Complexes Bearing Anionic Benzene-Based PCP-type Pincer Ligands [PDF]

, 2021
Among synthetic models of nitrogenases, iron–dinitrogen complexes with a Fe–C bond have attracted increasing attention in recent years. Here we report the synthesis of square-planar iron(I)–dinitrogen complexes supported by anionic benzene-based PCP- and
Asuka, Konomi, Takeru, Kato, Shogo, Kuriyama, Kazunari, Yoshizawa, Hiromasa, Tanaka, Yoshiaki, Nishibayashi   +5 more
core   +2 more sources

The effect of oxygen concentration and temperature on nitrogenase activity in the heterocystous cyanobacterium Fischerella sp.

Scientific Reports, 2017
Heterocysts are differentiated cells formed by some filamentous, diazotrophic (dinitrogen-fixing) cyanobacteria. The heterocyst is the site of dinitrogen fixation providing the oxygen-sensitive nitrogenase with a low-oxygen environment.
Lucas J. Stal
doaj   +1 more source

Nitrogenase loosens its belt to fix dinitrogen

, 2022
Nitrogenase reduces dinitrogen at its iron-sulfur core to produce ammonia by a convoluted mechanism. Now, research highlights the importance of sulfur mobility on nitrogenase’s metallocofactor for nitrogen ...
Milton, Ross Dean, Ross D. Milton
core   +1 more source

Planktonic Aggregates as Hotspots for Heterotrophic Diazotrophy: The Plot Thickens

Frontiers in Microbiology, 2022
Biological dinitrogen (N2) fixation is performed solely by specialized bacteria and archaea termed diazotrophs, introducing new reactive nitrogen into aquatic environments.
Lasse Riemann, Eyal Rahav, Uta Passow, Hans-Peter Grossart, Hans-Peter Grossart, Dirk de Beer, Isabell Klawonn, Meri Eichner, Mar Benavides, Mar Benavides, Edo Bar-Zeev   +10 more
doaj   +1 more source

Redefining the Nitrogen Cycle Through Electronic Configuration Driven Electrocatalysis for Low Carbon Energy

Carbon Energy, EarlyView.
This review reveals how electronic configuration engineering governs the entire electrocatalytic nitrogen cycle, providing structure‐informed insights into reaction selectivity, catalytic durability, and sustainable nitrogen utilization across energy and environmental systems. ABSTRACT The global nitrogen cycle is essential to food production, chemical
Jiamu Feng, Linai Zhou, Mincan Yang, Aoxiang Zhu, Zengfeng Wei, Weilin Xu, Jia Li, Jun Wan   +7 more
wiley   +1 more source

Phenotypic heterogeneity in metabolic traits among single cells of a rare bacterial species in its natural environment quantified with a combination of flow cell sorting and NanoSIMS

Frontiers in Microbiology, 2015
Populations of genetically identical microorganisms residing in the same environment can display marked variability in their phenotypic traits; this phenomenon is termed phenotypic heterogeneity. The relevance of such heterogeneity in natural habitats is
Matthias eZimmermann, Matthias eZimmermann, Stéphane eEscrig, Thomas eHübschmann, Mathias eKirf, Andreas eBrand, Andreas eBrand, R Fredrik Inglis, R Fredrik Inglis, Niculina eMusat, Susann eMüller, Anders eMeibom, Anders eMeibom, Martin eAckermann, Martin eAckermann, Frank eSchreiber, Frank eSchreiber   +16 more
doaj   +1 more source

Nonthermal Plasma–Enabled Cascade N2 Activation and Electroreduction

EcoEnergy, EarlyView.
Integrating plasma‐assisted NOx synthesis with subsequent electrochemical reduction enables the sustainable synthesis of high‐value N‐containing chemicals under ambient conditions. ABSTRACT The development of sustainable nitrogen fixation technologies operating under ambient conditions is critical for reducing the energy intensity and carbon footprint ...
Shijia Li, Wei Gao, Ziyun Wang
wiley   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

Polymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco, Emilly Cruz da Silva, Glenda Sores Gomes, Joane Almeida Alves, Amanda Vidal, Leandro Argolo, Rafaela Ribeiro, Luciana Souza, José Augusto Pires Bitencourt, Leonardo Brasil Felipe, Leonie Asfora Sarubbo, Sidnei Cerqueira dos Santos   +11 more
wiley   +1 more source

Dinitrogen fixation by surface peat and Sphagnum in an ombrotrophic bog

, 1982
Annual dinitrogen fixation at the surface of ombrotrophic Thoreau's Bog in eastern Massachusetts, U.S.A., is estimated at 1.0 g N∙m2. The rates of acetylene reduction are lower but still significant in the dark, suggesting that fixation is carried out ...
Harold F. Hemond, Rachel R. Chapman
core   +1 more source

Abundances of Iron-Binding Photosynthetic and Nitrogen-Fixing Proteins of Trichodesmium Both in Culture and In Situ from the North Atlantic [PDF]

, 2012
Marine cyanobacteria of the genus Trichodesmium occur throughout the oligotrophic tropical and subtropical oceans, where they can dominate the diazotrophic community in regions with high inputs of the trace metal iron (Fe).
Pratt, Nicola J., Macey, Anna I., Anna I Macey, David J Honey, Moore, C. Mark, Nicola J Pratt, Sophie Richier, Pratt Nicola J., C Mark Moore, Macey Anna I., Bibby Thomas S., Richier Sophie, Honey David J., Moore C. Mark, Honey, David J., Richier, Sophie, Bibby, Thomas S., Thomas S Bibby   +17 more
core   +1 more source