Results 81 to 90 of about 18,323 (221)

Deuteration of Six‐Membered N‐Heteroarenes: Chemistry and Applications

Chemistry – A European Journal, Volume 31, Issue 67, December 1, 2025.
Deuterated six‐membered N‐Heteroarenes (6NHetAr) are finding utility in an increasing repertoire of applications. Our paper comprehensively reviews synthetic approaches that have been reported for the deuteration of 6NHetAr and their fused counterparts while providing an overview of established and emerging applications for these materials.
Liju Raju, Davide Benedetto Tiz, Adrian Iles, Janez Košmrlj, Ross D. Jansen‐van Vuuren   +4 more
wiley   +1 more source

protium

, 2014
Citation: 'protium' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04903 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial usage
openaire   +1 more source

Trait coordination reveals the fast–slow plant economics spectrum along the vertical canopy profile in central Amazonian forests

Functional Ecology, Volume 39, Issue 12, Page 3596-3610, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how environmental drivers affect tree functioning is essential to improve predictions of tropical forests' response to climate change. While functional traits directly influence tree performance, our understanding of how canopy environments shape their ...
Leonardo G. Ziccardi, Tyeen C. Taylor, Marielle N. Smith, Nathan B. Gonçalves, David Kramer, Kleber Silva Campos, Neill Prohaska, Natalia Restrepo‐Coupe, Scott R. Saleska, Advanio Inácio Siqueira‐Silva, Deliane Penha, Rodrigo Gomez, Victor A. H. F. Santos, Scott C. Stark   +13 more
wiley   +1 more source

Physicochemical Characterization and Biological Activities of the Triterpenic Mixture α,β-Amyrenone

Molecules, 2017
α-Amyrenone and β-amyrenone are triterpenoid isomers that occur naturally in very low concentrations in several oleoresins from Brazilian Amazon species of Protium (Burseraceae).
Rosilene G. S. Ferreira, Walter F. Silva Júnior, Valdir F. Veiga Junior, Ádley A. N. Lima, Emerson S. Lima   +4 more
doaj   +1 more source

Dependence of Biocatalysis on D/H Ratio: Possible Fundamental Differences for High-Level Biological Taxons

Molecules, 2020
The kinetics of biological reactions depends on the deuterium/protium (D/H) ratio in water. In this work, we describe the kinetic model of biocatalytic reactions in living organisms depending on the D/H ratio.
Igor Zlatskiy, Tatiana Pleteneva, Alexander Skripnikov, Tatiana Grebennikova, Tatiana Maksimova, Nadine Antipova, Olga Levitskaya, Mariia Makarova, Igor Selivanenko, Anton Syroeshkin   +9 more
doaj   +1 more source

Precision muon lifetime and capture experiments at PSI

, 2004
The muLan experiment at the Paul Scherrer Institute will measure the lifetime of the positive muon with a precision of 1 ppm, giving a value for the Fermi coupling constant G_F at the level of 0.5 ppm. Meanwhile, by measuring the observed lifetime of the
Bernard, Chen, Commins, F.E. Gray, Fearing, Gorringe, van Ritbergen   +6 more
core   +1 more source

Chemical Composition and Mechanism of Vibriocidal Action of Essential Oil from Resin of Protium heptaphyllum

TheScientificWorldJournal, 2019
Protium heptaphyllum is a plant widely distributed in Brazilian ecosystems that produce a resin which has pharmacological activities. In this study, the chemical composition, antimicrobial and antibiofilm activity, and the possible mechanism of action ...
Josiane Lima Mendes, Thiago Ferreira de Araújo, Mário Geraldo de Carvalho, Francisco Eduardo Aragão Catunda Júnior, Renata Albuquerque Costa   +4 more
semanticscholar   +1 more source

Influence of tree height and age on leaf drip‐tip morphology in lowland tropical rainforest trees

Functional Ecology, Volume 39, Issue 12, Page 3766-3777, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Across biomes, plant form and function are driven largely by variation in climate, particularly the availability of light and water. Strong gradients of these resources also exist within plant communities.
Emma C. Grover, Margaret R. Metz, Renato Valencia, Simon A. Queenborough   +3 more
wiley   +1 more source

Volatile‐Mediated Plant Defense Networks: Field Evidence for Isoprene as a Short‐Distance Immune Signal

Plant, Cell &Environment, Volume 48, Issue 12, Page 8616-8629, December 2025.
ABSTRACT Isoprene, the most abundant biogenic hydrocarbon in the atmosphere, is known to protect photosynthesis from abiotic stress and significantly impact atmospheric chemistry. While laboratory studies show that isoprene can enhance plant immunity, its role in plant‐plant communication under natural field conditions remains unclear.
Peiyuan Zhu, Baris Weber, Maaria Rosenkranz, Andrea Polle, Andrea Ghirardo, Jan Muhr, A. Corina Vlot, Jörg‐Peter Schnitzler   +7 more
wiley   +1 more source

Chemical Composition, Enantiomeric Distribution, and Antifungal Activity of the Oleoresin Essential Oil of Protium amazonicum from Ecuador

Medicines, 2017
Background: Protium species (Burseraceae) have been used in the treatment of various diseases and conditions such as ulcers and wounds. Methods: The essential oil from the oleoresin of Protium amazonicum was obtained by hydrodistillation and analyzed by ...
Prabodh Satyal, Chelsea N. Powers, Rafael Parducci V., Robert L. McFeeters, William N. Setzer   +4 more
doaj   +1 more source