Results 131 to 140 of about 3,352,928 (273)
Chemistry – A European Journal, EarlyView.Two families of bTurea‐derived biradicals, bcTmols and bcTCOOKs, were prepared as polarizing agents for dynamic nuclear polarization (DNP)‐enhanced NMR through short and efficient synthetic routes. The best‐performing biradical, bcTCOOK‐M2, containing two methyl groups on the urea bridge, provided signal enhancements of up to ∼220 at 14.1 T and 100 K ...
Ancy T. Wilson +3 more
wiley +1 more source
Lyapunov exponents explain disorder-induced polarization and soliton jumping in a mechanical Markov system. [PDF]
Nat CommunStephenson W, Cheng N, Sun K, Mao X.
europepmc +1 more source
Chemistry – A European Journal, EarlyView.This study investigates how molecular topology influences the photophysical properties of star‐shaped, threefold‐symmetric triphenylamine (TPA) derivatives functionalized with three BODIPY or SubPc units. Their absorption spectra exhibit minimal solvatochromism, whereas their fluorescence intensity is strongly dependent on solvent polarity.
Habiba Boughanmi +4 more
wiley +1 more source
A model predictive control framework with fatigue life assessment for flywheel energy storage systems supported by active magnetic bearings. [PDF]
Sci RepHashim A +3 more
europepmc +1 more source
Long Fluorescence Lifetime Molecular Rotors Based on the 4,4‐Dicyano‐BODIPY Core
Chemistry – A European Journal, EarlyView.Substituting fluorine with cyano groups in BODIPY‐based fluorescent molecular rotors yields viscosity‐sensitive dyes with significantly enhanced fluorescence lifetimes that can be used for viscosity mapping in living cells using FLIM microscopy. ABSTRACT Environmentally sensitive fluorescent probes with extended emission lifetimes are highly valuable ...
Yelyzaveta Denysieva +4 more
wiley +1 more source
Structure–Activity Relationships in Methyl‐Driven Overhauser Effect DNP
Chemistry – A European Journal, EarlyView.Dynamic nuclear polarization (DNP) was investigated in a wide array of methyl‐containing Blatter radicals to identify design principles for the synthesis of an Overhauser DNP polarizing agent. Fourteen different radicals were synthesized, which revealed that only radicals possessing sterically unhindered methyl groups in sites of high spin density were
Ananya Mukherji +15 more
wiley +1 more source
Finite Element Model Updating for Rotating Machinery: Methods, Applications, and Future Directions-A Review. [PDF]
Sensors (Basel)Park D, Moon J, Yoon J, Choi BK.
europepmc +1 more source
Chemistry – A European Journal, EarlyView.New insights into the mechanism of the structural transformation of cellulose into highly ordered graphitic carbon using an Fe–Ca bimetallic catalyst were obtained through complementary spectroscopic techniques, including Raman, solid‐state NMR, and Mössbauer.
Shamala Gowri Krishnan +3 more
wiley +1 more source
Chemie Ingenieur Technik, EarlyView.This study explores the process chain for reverse engineering and additive manufacturing of a water pump impeller in a process plant. Key aspects include digital twin creation, CAD redesign, material certification, Hirtisation postprocessing, and performance testing. Insights highlight iterative design for improved precision and reliability.
Michael Stadler +3 more
wiley +1 more source
Sliding Mode Observer with Exponential Reaching Law for Speed Estimation of a Six-Phase Induction Machine. [PDF]
Sensors (Basel)Delorme L +6 more
europepmc +1 more source