Results 211 to 220 of about 14,752 (295)

High-energy impact and vapor recondensation history of the angrite parent body revealed by nickel isotopes. [PDF]

Proc Natl Acad Sci U S A
Zhu K, Yamaguchi A, Sossi PA, Bouvier A, Chen L, Ni P.   +5 more
europepmc   +1 more source

Cation Distribution in Li2CaSiO4:Gd, Pr, Na Uncovered Through Anomalous Diffraction

European Journal of Inorganic Chemistry, EarlyView.
Li2CaSiO4 co‐doped with Gd3+ and Pr3+ shows strong blue‐to‐UV‐B up‐conversion. Herein, we explore the doping element distribution in order to discern the reason for the strongly supportive co‐doping effect using high‐resolution Rietveld refinement and multiple‐edge anomalous dispersion measurements.
Christoph Rick, Raphael Steinbach, Daniel M. Többens, Thomas Jüstel, Joachim Breternitz   +4 more
wiley   +1 more source

Establishment of a Purge and Trap Continuous-Flow Isotope Ratio Mass Spectrometer System for Analysis of Stable Nitrate Isotopes (δ¹⁵N and δ¹⁸O) in Water Samples by Ti(III) Reduction. [PDF]

Rapid Commun Mass Spectrom
Gcakasi MN, Stumpp C, Watzinger A.
europepmc   +1 more source

Properties of [Fe(salen)]2‐μ‐Oxo Derivatives and Their Effect on Catalytic Hydrophosphination

European Journal of Organic Chemistry, EarlyView.
A series of [Fe(salen)]2‐μ‐oxo and [Fe(salophen)]2‐μ‐oxo complexes were synthesized to probe how ligand electronics and backbone rigidity influence redox behavior and catalytic hydrophosphination of styrene. Electron‐withdrawing substituents enhance stability and activity, enabling tunable, efficient C–P bond formation.
Nathan J. Buxton, Edmund O. Dadge, Oliver S. Matys, Max A. A. Entwisle, Ruth L. Webster   +4 more
wiley   +1 more source

The implementation of the urinalysis method for ²¹⁰Po monitoring of employees in the selected industrial sector operating with NORMs in Poland. [PDF]

Int J Occup Med Environ Health
Rzemek K, Dymecka M.
europepmc   +1 more source

Iminodirhodium‐ and Iminocopper‐Catalyzed CH Activation: Chemoselective Oxidation of Alcohols and Aldehydes via Intermolecular Hydride Abstraction

European Journal of Organic Chemistry, EarlyView.
Chemoselective hydride abstractor iminometalloids, derived from O‐mesylacetoxime (MAO) using Rh2(II/II) or Cu(I) catalysts, can activate the C–Hα bonds of alcohols and aldehydes ultimately forming ketones, carboxylic acids, and esters even in the presence of C–H bonds with comparable bond strengths.
Raghunath Reddy Anugu, John R. Falck, Adeniyi M. Adebesin   +2 more
wiley   +1 more source

Experimental quantification of hydrogen content in the Earth's core. [PDF]

Nat Commun
Huang D, Murakami M, Gerstl S, Liebske C.   +3 more
europepmc   +1 more source

Rational design of Ni‐based catalysts for methane dry reforming: Recent advances and future perspectives

FlexMat, EarlyView.
Addressing the challenges inherent in dry reforming of methane (DRM), this paper focuses on the structural design and performance optimization of Ni‐based catalysts. The modulation strategies for DRM are systematically reviewed across four dimensions: the micromorphology of active metals, metal‐support interactions, electronic modifications by ...
Bowei Cao, Junlei Zhang, Wanglei Wang
wiley   +1 more source

Non-equilibrium condensation of the first Solar System solids. [PDF]

Nature
Charnoz S, Aléon J, Chaussidon M, Sossi PA, Marrocchi Y, Franco P.   +5 more
europepmc   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source