Results 171 to 180 of about 249,692 (322)

DOMINANT EIGENVECTOR AND EIGENVALUE ALGORITHM IN SPARSE NETWORK SPECTRAL CLUSTERING

, 2018
Bingjian Yang
openalex   +2 more sources

Ambiguities in Assigning Single‐Crystal NMR Data to Individual Atoms in the Crystal Structure: A Case Study of Hambergite, Be2$$ {}_2 $$BO3$$ {}_3 $$OH, by 9$$ {}^9 $$Be and 11$$ {}^{11} $$B NMR Spectroscopy, XRD Measurements and DFT Calculations

Magnetic Resonance in Chemistry, EarlyView.
The fundamental question of how to assign NMR resonances to specific atoms in the unit cell is addressed by using the 9Be and 11B spectra of the natural mineral hambergite as a model system. ABSTRACT The NMR interaction tensors of 9$$ {}^9 $$Be and 11$$ {}^{11} $$B of hambergite, Be2$$ {}_2 $$BO3$$ {}_3 $$OH, were derived from single‐crystal NMR ...
Jennifer Steinadler, Georg Krach, Kristian Witthaut, Tobias Stürzer, Rupert Hochleitner, Wolfgang Schnick, Thomas Bräuniger   +6 more
wiley   +1 more source

Time‐Division Multiplexing for Parallel Transmission at Ultra‐High Field With Limited RF Channels

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Investigating time‐division multiplexing for parallel transmission in ultra high‐field imaging, striving for homogeneous whole brain excitation with a limited number of RF channels. Methods A fast RF switch was built to alternately route 8 transmit channels to each row of a double‐row 16‐element transmit coil array at a 9.4 T human MRI
Felix Glang, Georgiy A. Solomakha, Dario Bosch, Klaus Scheffler, Nikolai I. Avdievich   +4 more
wiley   +1 more source

Field Strength‐Dependent White Matter R1 and R2 Anisotropy of Phase‐Cycled Balanced Steady‐State Free Precession Relaxometry

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To investigate how the relaxation rates (R1, R2) and asymmetry indices (AI), derived from phase‐cycled balanced steady‐state free precession (pc‐bSSFP) data, depend on the orientation of white matter (WM) fiber tracts at different field strengths.
Florian Birk, Hamzeh Tesh, Ali Aghaeifar, Svenja Klinkowski, Praveen Iyyappan Valsala, Sebastian Mueller, Svenja Brodt, Klaus Scheffler, Rahel Heule   +8 more
wiley   +1 more source

High-Throughput Computation of Anharmonic Low-Frequency Protein Vibrations. [PDF]

J Phys Chem B
Sauer MA, Mondal S, Cano M, Heyden M.
europepmc   +1 more source

Strategy of computed tomography sinogram inpainting based on sinusoid-like curve decomposition and eigenvector-guided interpolation

, 2011
Yinsheng Li, Yang Chen, Yining Hu, Ahmed Oukili, Limin Luo, Wufan Chen, Christine Toumoulin   +6 more
openalex   +2 more sources

Sparse Hierarchical Preconditioners Using Piecewise Smooth Approximations of Eigenvectors [PDF]

, 2020
Bazyli Klockiewicz, Eric Darve
openalex   +1 more source

vibrational eigenvector

Citation: 'vibrational eigenvector' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08705 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
openaire   +1 more source

Spatial Image Gradient Estimation From the Diffusion MRI Profile

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose In the course of diffusion, water molecules encounter varying values for the relaxation‐time properties of the underlying tissue. This factor, which has rarely been accounted for in diffusion MRI (dMRI), is modeled in this work, allowing for the estimation of the gradient of relaxation‐time properties from the dMRI signal. Methods With
Iman Aganj, Thorsten Feiweier, John E. Kirsch, Bruce R. Fischl, Andre J. van der Kouwe   +4 more
wiley   +1 more source

A Logratio Approach to the Analysis of Autosomal Genotype Frequencies Across Multiple Samples. [PDF]

Mol Ecol Resour
Graffelman J.
europepmc   +1 more source