Results 171 to 180 of about 20,890 (228)

Chain‐End Grafting of RAFT Polyelectrolyte Macroligands to Stabilize Near‐Infrared‐Emitting Gold Nanoclusters

Macromolecular Rapid Communications, EarlyView.
Surface‐functionalized gold nanoclusters (AuNCs) are synthesized in situ by chain‐end grafting of RAFT polyelectrolytes at room temperature directly in water. It leads to highly stable polymer‐AuNCs nanohybrids emitting near‐infrared photoluminescence with µs lifetimes. ABSTRACT With their photoluminescence properties, gold nanoclusters (AuNCs, d<2 nm)
Bárbara Casteleiro, Pierre Alcouffe, Fernande Da Cruz, Agnès Crépet, José Manuel Gaspar Martinho, Marie‐Thérèse Charreyre, José Paulo Sequeira Farinha, Arnaud Favier   +7 more
wiley   +1 more source

Adaptive frequency-domain CFAR for robust spectrum sensing under jamming and administrator-controlled counter-access. [PDF]

Sci Rep
Shams MS, Abouelfadl AA, Mansour A, Soliman MSAL.   +3 more
europepmc   +1 more source

Extending the hyper‐logistic model to the random setting: New theoretical results with real‐world applications

Mathematical Methods in the Applied Sciences, EarlyView.
We develop a full randomization of the classical hyper‐logistic growth model by obtaining closed‐form expressions for relevant quantities of interest, such as the first probability density function of its solution, the time until a given fixed population is reached, and the population at the inflection point.
Juan Carlos Cortés, Ana Navarro‐Quiles, Sorina Madalina Sferle   +2 more
wiley   +1 more source

Integrating fixed and mobile coherent optical access networks for unified broadband services. [PDF]

Commun Eng
Wu Q, Wei Z, Zhang X, Wei H, Huo J, Huang X, Ji T, Xu Z, Lu C, Lau APT, Zhong K.   +10 more
europepmc   +1 more source

Beyond Directions: Symmetry‐Aware Rotation Sets for Triaxial Diffusion Encoding by Geometric Filter Optimization

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To improve the accuracy of diffusion‐weighted powder average signals for diffusion encoding with arbitrary b‐tensors. Methods We identify an intrinsic dihedral (D2$$ {D}_2 $$) symmetry of diffusion signals for arbitrary diffusion encoding, which defines their natural signal space (a quotient of 3D rotations).
Sune Nørhøj Jespersen, Filip Szczepankiewicz   +1 more
wiley   +1 more source

Lipids Contribute to Heterochromatin Condensation Revealed by Quantitative Raman-Brillouin Microscopy. [PDF]

JACS Au
Machida M, Kajimoto S, Shibuya R, Isono M, Watabe M, Oma Y, Hibino K, Fujii K, Okumura M, Harata M, Shibata A, Nakabayashi T.   +11 more
europepmc   +1 more source

Quantifying Skin Sodium Concentration With Novel Very Rapid Biexponential T2 Relaxometry and Signal Loss Compensation Methodology

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To accurately measure skin tissue sodium concentration (TSC) through development of spin‐3/2 relaxometry methodology that also considers blood sodium. Methods Mxy generation during RF excitation is substantially reduced by very rapid T2f.
Gurparkash Singh, Christian Beaulieu, Rob Stobbe   +2 more
wiley   +1 more source

A Dual-Band Filter Using a Multimode Resonator with Asymmetrically Loaded Open-Circuited Stubs for Independent Passband Control. [PDF]

Micromachines (Basel)
Chen Q, Zhang L, Liu L.
europepmc   +1 more source

Comparative Performance Analysis of an Open Source Motion‐Compensated Cardiac Diffusion Sequence Across Different MRI Systems and Gradient Strengths—A Pilot Study

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To validate the performance of an open‐source cardiac diffusion sequence framework and to investigate hardware‐based performance differences. Methods Three second order motion compensated sequence files were compiled using Pulseq and applied across different MRI systems to image five volunteers.
Eric Arbes, Ariel Hannum, Johannes Fischer, Qingping Chen, Sebastian Littin, Alexander Maier, Michael Bock, Simon Reiss   +7 more
wiley   +1 more source

Dual-band stub-loaded monopole antenna with bandwidth enhancement using weighted figure-of-merit optimization. [PDF]

Front Artif Intell
Tiang JJ.
europepmc   +1 more source