Results 141 to 150 of about 3,966,597 (289)
Emergence of Rashba Spin‐Orbit Coupling in Staggered‐Gyromagnetic Photonic Crystals
Laser &Photonics Reviews, EarlyView.Rashba spin‐orbit coupling emerges in a staggered‐gyromagnetic photonic crystal under a uniform out‐of‐plane magnetic bias. The staggered magnetization splits a four‐fold Dirac point into a Rashba band structure carrying helical spin textures, verified by a four‐band k‐p model.
Yao‐Ting Wang, Wenlong Gao
wiley +1 more source
The Bergman space, the Bloch space, and commutators of multiplication operators
Duke Mathematical Journal, 1986 Let \(L^ 2_ a\) denote the Bergman space of functions analytic in the unit disc \({\mathbb{D}}\) and square summable with respect to the area measure. For \(f\in L^{\infty}({\mathbb{D}})\) the Hankel operator \(H_ f\) on \(L^ 2_ a\) is defined by \[ (1)\quad H_ f(g)=(I-{\mathbb{P}})(fg), \] where \({\mathbb{P}}\) is the orthogonal projection from \(L ...
openaire +2 more sources
Optimal Experimental Design for Fast and Accurate Relaxation Time Measurements in Magnetic Resonance
Magnetic Resonance in Chemistry, EarlyView.We apply D‐optimal experimental design to relaxation constant estimation in NMR relaxometry. The resulting sampling schedules concentrate measurements where the signal is most sensitive to the relaxation constant. Compared with conventional linear or logarithmic spacing, D‐optimal designs achieve better estimation accuracy and precision with fewer ...
Natalie E. Klein +4 more
wiley +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop SAFE, a self‐calibrated framework to estimate B1+ and B0 field inhomogeneities directly from conventional magnetic resonance fingerprinting (MRF) acquisitions and improve its quantification accuracy. Methods SAFE utilized a two‐step approach. First, two physics‐informed image markers are extracted from the MRF data to create
Mengze Gao +13 more
wiley +1 more source
Emilie Berendsen Bloch & David Bloch Recital of Goethe-Lieder, January 7, 1962
, 1962 Concert program for Emilie Berendsen Bloch & David Bloch Recital of Goethe-Lieder, January 7 ...
core
Multi‐Vendor and Multi‐Site Characterization of 13C Coils for Clinical Studies
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Due to the inherently low signal‐to‐noise ratio (SNR) domain for 13C imaging, optimal coil performance is essential to maximize data quality. Quality control (QC) for 13C coils employed in magnetic resonance spectroscopy (MRS) is of paramount importance.
Emil S. Christensen +7 more
wiley +1 more source
Testament spirituel de Marc Bloch
, 1945 Bloch Marc. Testament spirituel de Marc Bloch. In: Annales d'histoire sociale. 8ᵉ année, N. 1, 1945. pp.
Bloch, Marc
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Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To introduce and evaluate a novel RF pulse design algorithm for multi‐dimensional spatially tailored excitation that is optimized for spoiled steady‐state gradient echo MRI sequences. Methods Existing multi‐dimensional RF pulse design algorithms optimize RF and gradient waveforms using a loss function based on a single RF pulse ...
Yongli He +2 more
wiley +1 more source
Non-Bloch theory for spatiotemporal photonic crystals assisted by continuum effective medium
Physical Review ResearchAs one indispensable type of nonreciprocal mechanism, a system with temporal modulations is intrinsically open in the physical sense and inevitably non-Hermitian, but the space and time degrees of freedom are nonseparable in a large variety of ...
Haozhi Ding, Kun Ding
doaj +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Widespread adoption and methodological advancement of magnetic resonance fingerprinting (MRF) are limited by the lack of unified, reproducible implementation frameworks and fragmented open‐source tools. To address these barriers, we introduce OpenMRF—a comprehensive Pulseq‐based solution—designed to enable standardized and transferable
Tom Griesler +17 more
wiley +1 more source