Results 171 to 180 of about 527,773 (272)

Novas tecnologias, novos desafios [PDF]

open access: yesCiência e Cultura, 2016
openaire   +1 more source

Structures of variants of Escherichia coli flavodiiron‐type nitric oxide reductase reveal changes in the di‐iron site

open access: yesActa Crystallographica Section D, Volume 82, Issue 5, Page 457-470, May 2026.
Flavodiiron proteins (FDPs) are di‐iron enzymes that reduce NO and/or O2 with distinct substrate selectivity. We have produced E. coli FDP variants targeting second coordination‐sphere residues and determined their structures. Although the kinetics remained unchanged, the E.
Patrícia T. Borges   +8 more
wiley   +1 more source

Wide variation in hydraulic safety margins across and within southern Amazon forests

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
Site‐specific conditions and species identity were the main drivers of variation in Ψdry and HSM50 in southern Amazonian trees, but played a weaker role in explaining Ψ50. Ψpredawn strongly predicted HSM50. Across the Amazon, Ψ50_CWM and Ψdry_CWM became more negative with increasing MCWD, whereas HSM50_CWM showed no significant relationship with MCWD ...
Raiane Gonçalves Beú   +21 more
wiley   +1 more source

Tenebrio molitor‐Derived Enzyme Systems Enable Solvent‐Reduced Recovery of Intracellular Polyhydroxyalkanoates

open access: yesMicrobial Biotechnology, Volume 19, Issue 5, May 2026.
Multi‐enzyme systems from Tenebrio molitor enable solvent‐free recovery of microbial PHAs directly from wet biomass under mild aqueous conditions, achieving high polymer yields and integrity while reducing carbon footprint up to seven‐fold compared with conventional extraction methods.
Sanja Skaro Bogojevic   +12 more
wiley   +1 more source

Electrochemical CO2 Reduction on a Bi–Sn Eutectic Alloy in Acidic Media for Formic Acid Production

open access: yesChemSusChem, Volume 19, Issue 8, 28 April 2026.
Acidic CO2 electrolysis enables direct formic acid production with minimal (bi)carbonate formation. A eutectic Bi–Sn gas‐diffusion electrode achieves 81.3% faradaic efficiency (FE) at −100 mA cm−2 and pH 3, retaining selectivity up to −400 mA cm−2 and stable operation for 100 h with < 10% FE loss.
Avni Guruji   +5 more
wiley   +1 more source

Novas tecnologias de prétratamento de hortofrutícolas

open access: yes, 2004
As exigências crescentes dos consumidores por alimentos de alta qualidade, com características organolépticas e nutricionais semelhantes aos produtos frescos, têm aumentado o interesse pelo desenvolvimento de novas técnicas de processamento de alimentos.
Gonçalves, E. M.   +6 more
openaire   +4 more sources

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