Results 181 to 190 of about 42,770 (259)

A Mononuclear Scenario for the Copper‐Catalyzed Monooxygenation of Phenolic Substrates

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT Whereas a dinuclear pathway applies to the monooxygenation of phenols by the type 3 copper enzyme tyrosinase, a mononuclear pathway has been identified for the same reaction in corresponding small‐molecule systems. DFT calculations of five copper model complexes reveal that the latter mechanism is energetically feasible, identifying all ...
Alexander Koch   +3 more
wiley   +1 more source

Phosphorescence of Heavy, T‐Shaped Pnictogen Trisamides in Solution at Room Temperature in the Near‐Infrared II Region

open access: yesChemistry – A European Journal, EarlyView.
The unique photophysical properties of heavy T‐shaped Sb and Bi trisamides are reported. A ligand‐to‐pnictogen charge‐transfer excitation from a redox‐active NNN pincer to a vacant pnictogen p‐orbital populates a triplet state that emits in the highly desirable NIR‐II region, with lifetimes up to the µs range.
Katharina L. Deuter   +4 more
wiley   +1 more source

High‐Temperature Heat Pump Test Bench with n‐Butane (R‐600) Generating Steam

open access: yesChemie Ingenieur Technik, EarlyView.
This work involves building a test bench for a high‐temperature heat pump (HTHP) and analyzing the measurements. The focus is on steam generation using an HTHP to decarbonize process steam demand. The findings indicate that stable steam generation is possible, providing a higher heat transfer coefficient in the heat pump's condenser.
Sebastian Benkert   +7 more
wiley   +1 more source

On subset least squares estimation and prediction in vector autoregressive models with exogenous variables

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne   +2 more
wiley   +1 more source

Historical Review of Euthanasia. From Ancient Times until before Modern Times. [PDF]

open access: yesMaedica (Bucur)
Spinthouraki A   +5 more
europepmc   +1 more source

Discontinuing Long‐Term Denosumab in Treating Fragile Bone: Why, for Whom, and How?

open access: yesClinical Pharmacology &Therapeutics, EarlyView.
Discontinuation of denosumab (Dmab) may be necessary due to adverse events or an unfavorable long‐term risk–benefit profile. However, accumulating evidence demonstrates pronounced rebound phenomena after withdrawal, most notably a marked increase in multiple vertebral fractures, and, in some reports, elevated mortality.
Ko‐Hsiu Lu   +5 more
wiley   +1 more source

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