Results 251 to 260 of about 1,812,757 (349)

UHRMS Formula Assignment: Diophantine-Based Recalibration Yields Lorentzian Mass Error Distribution as the Limiting Factor. [PDF]

J Am Soc Mass Spectrom
Safaridehkohneh N, Ott A.
europepmc   +1 more source

Intermolecular Enantioselective Nickel‐Catalyzed Arylation of Un‐Activated C(sp3)─H Bond

Angewandte Chemie International Edition, EarlyView.
Ni: a new solution for asymmetric C(sp3)─H activation. The stereoselective synthesis of all‐carbon quaternary stereogenic centres is achieved via enantioselective C(sp3)─H arylation using a Ni‐BINOL‐derived catalyst. Rational catalytic cycle design uncovers a new reaction pathway that can efficiently induce chiral information during the stereoselective
Erwan Brunard, Fengjie Huang, Àlex Díaz‐Jiménez, Sofiya Kostiukovska, Joanna Wencel‐Delord   +4 more
wiley   +1 more source

Separation of Hydrogen Isotopes

Platinum Metals Review, 1957
openaire   +1 more source

The Breeding Distribution of a Migratory Bird Fluctuates With Nonbreeding Season Rainfall Over the Last Century. [PDF]

Glob Chang Biol
Stevens HC, France CAM, Marra PP.
europepmc   +1 more source

δ(¹⁸O/¹⁶O) Determinations in Water Using Inductively Coupled Plasma-Tandem Mass Spectrometry. [PDF]

Anal Chem
Lancaster ST, Irrgeher J, Dallmayr R, Conrad E, Hörhold M, Bohleber P, Behrens M, Camin F, Žagar K, Vreča P, Prohaska T.   +10 more
europepmc   +1 more source

Structural Revision of the C16 Sesquiterpene Hegelenether and the Mechanism of C6‐Methylation in Terpene Biosynthesis

Angewandte Chemie International Edition, EarlyView.
The structure of the non‐canonical C16 sesquiterpene named hegelenether was revised to the structure of marxdiol, and its absolute configuration was assigned. Isotopic labeling experiments revealed the stereochemical course of the methyltransferase involved in its biosynthesis.
Heng Li, Gregor Schnakenburg, Michael Groll, Jeroen S. Dickschat   +3 more
wiley   +1 more source

A Low-Background, High-Flatness Mounting Method for In Situ SIMS Isotopic Analysis for Fine-Grained Samples. [PDF]

Anal Chem
Gao YB, Hao JL, Zhou Z, He HC, Tang GQ, Hu S, Yang W, Lin YT.   +7 more
europepmc   +1 more source

Radium Speciation in Simulated Digestive Biofluids: Insights from Electrospray Ionization Mass Spectrometry and Thermodynamic Modeling

Analysis &Sensing, EarlyView.
Electrospray ionization mass spectrometry (ESI‐MS) combined with thermodynamic modeling provides the first direct characterization of radium speciation in synthetic gastrointestinal biofluids. Free Ra2+ ions predominate with minimal protein binding and negligible EDTA complexation. Crown ethers enable effective Ra complexation.
Linus Holtmann, Tim Schmalz, Tobias Weissenborn, Felix Stäger, Beate Riebe, Clemens Walther   +5 more
wiley   +1 more source

A global dataset of helium isotopic data in tectonically and hydrothermally active geological environments. [PDF]

Sci Data
Gherardi F, Facca G, Pierotti L, Martinelli G, Pinti DL.   +4 more
europepmc   +1 more source

Innovative Approach to Hydrogen Purification: A Review on the Role of Metal Hydrides

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal hydrides, renowned for their unique hydrogen bonding capabilities, have emerged as pivotal materials in the energy sector, particularly for hydrogen storage and purification applications. Their ability to store hydrogen reversibly under moderate conditions has positioned them at the forefront in hydrogen‐based energy systems. This review
T. Mohammed Faheem, Vinod Kumar Sharma, A. Shaija, Bhaskar Das, Ranjith Krishna Pai   +4 more
wiley   +1 more source