Results 341 to 350 of about 2,347,924 (407)

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

open access: yesBerichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

Binuclear lanthanide complexes as magnetic resonance and optical imaging probes for redox sensing

open access: yesChemistry – A European Journal, Accepted Article.
We report a family of lanthanide(III) complexes that act as redox probes via both magnetic resonance and luminescence outputs. The ligands are functionalized with nitro, azobenzene and azide groups which are reduced to a common aniline product, and each responds to both chemical and biocatalytic reductive conditions at different cathodic onset ...
Charlie H. Simms   +12 more
wiley   +1 more source

Strongly Coupled 𝒫𝒯-Symmetric Models in Holography. [PDF]

open access: yesEntropy (Basel)
Areán D   +2 more
europepmc   +1 more source

Enzyme‐Catalysed Formation of Hydrocarbon Scaffolds from Geranylgeranyl Diphosphate Analogs with Shifted Double Bonds

open access: yesChemistry – A European Journal, EarlyView.
Four new geranylgeranyl diphosphate analogs with shifted double bonds were synthesized and together with the known analog iso‐GGPP I converted with 14 diterpene synthases. While two substrate analogs were not accepted by the enzymes, the other three analogs yielded compounds with skeletons that are not observed in nature.
Heng Li   +2 more
wiley   +1 more source

A Hidden Chemical Assembly Mechanism: Reconstruction‐by‐Reconstruction Cycle Growth in HKUST‐1 MOF Layer Synthesis

open access: yesChemPhysChem, EarlyView.
The metal‐organic framework HKUST‐1 grown in a step‐wise manner shows growth rates in clear disagreement with the usual layer‐by‐layer (LbL) model. A nearly exact 4‐times higher rate compared to the simple growth model is found and a modified model involving lattice reconstruction is proposed.
T. Koehler   +3 more
wiley   +1 more source

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