Results 121 to 130 of about 1,854,503 (293)

Electronic and Computer-Aided Astronomy [PDF]

Computers in Physics, 1990
Ian S. McLean, Michal Simon
openaire   +2 more sources

Ultimate Intrinsic SNR Depends on B0 Orientation

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This work aims to investigate the effect of B0$$ {B}_0 $$ orientation on the uiSNR in MRI. Methods Electromagnetic simulations were performed on both realistic body models and simplified geometric models. Comparisons between (1) opposite B0$$ {B}_0 $$ directions along the head‐foot (HF) axis, corresponding to head‐first and feet‐first ...
Yuting Wang, Markus W. May, Marcel Gratz, Mark E. Ladd, Stephan Orzada   +4 more
wiley   +1 more source

Teaching and Learning Astronomy

, 2010
I review the teaching and learning of astronomy, in elementary and secondary school, colleges and universities, and for the public through astronomy outreach and communication.
Percy, John R.
core  

Whole‐Brain Diffusion MRI at 7T With Universal Multiband GRAPE pTx Pulses

Magnetic Resonance in Medicine, EarlyView.
Purpose To improve signal strength and homogeneity of whole‐brain diffusion‐weighted imaging (DWI) at 7T. Methods Universal multiband excitation and refocusing pulses were optimized with the gradient ascent pulse engineering (GRAPE) algorithm across a database of B1+$$ {B}_1^{+} $$ and B0$$ {B}_0 $$ maps obtained from 20 subjects.
Marten Laufenberg, Daniel Löwen, Mónica Ferreira, Nicolas Boulant, Jennifer Faber, Tony Stöcker   +5 more
wiley   +1 more source

Dual‐Tuned 31P‐1H Dual‐Row Loop/Dipole 32‐Element Transceiver Array for Human Brain Spectroscopy at 9.4T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The goal of this work is to develop and evaluate a single‐layer tight‐fit 32‐element dual‐tuned (DT) loop/dipole transceiver (TxRx) array for human brain 31P MRS(I) at 9.4T, achieving full‐brain coverage and reasonable transmit and receive performance at both frequencies.
G. A. Solomakha, R. Pohmann, F. Glang, S. Mueller, P. I. Valsala, T. Platt, S. Orzada, M. E. Ladd, A. Korzowski, K. Scheffler, N. I. Avdievich   +10 more
wiley   +1 more source

The location of telescopes (The Real Astronomy)

, 2008
Professional Astronomers talk about some of the telescopes they have used, where they are located and why they are located there.
Centre for Astrophysics and Supercomputing
core   +1 more source

Interlayer pairing in bilayer nickelates

npj Quantum Materials
The discovery of T c ~ 80 K superconductivity in pressurized La3Ni2O7 has launched a new platform to study high-temperature superconductivity. Using non-perturbative dynamic cluster approximation quantum Monte Carlo calculations, we characterize the ...
Thomas A. Maier, Peter Doak, Ling-Fang Lin, Yang Zhang, Adriana Moreo, Elbio Dagotto   +5 more
doaj   +1 more source

Computational Astronomy

, 2021
openaire   +2 more sources

Toward Brain Biosignature at 7 T—Repeatability of a Multiparametric CEST, QSM, QTI, and Sodium Imaging Protocol

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the repeatability of an extended multiparametric 7 T MRI protocol for voxel‐wise tissue characterization combining morphological, CEST, QSM, QTI, and Sodium contrasts. Methods A repeatability study was performed in 12 volunteers without diagnosed neurological disease on a 7 T MRI system, using a comprehensive acquisition ...
Annika Hofmann, Martin Freudensprung, Lion Mücke, Tobias Wilferth, Zijin Yang, Dominik Perrin, Julius Glaser, Katharina Tkotz, Magda Duarte, Simon Weinmüller, Oliver Chaudry, Annemarie Wirth, Angelika Mennecke, Oliver Gödicke, Patrick Liebig, Lena V. Gast, Philipp Ehses, Clemens Stilianu, Rudolf Stollberger, Jannis Hanspach, Alexander German, Jürgen Winkler, Michael Uder, Arnd Doerfler, Sebastian Bickelhaupt, Andreas Maier, Katharina Breininger, Moritz Zaiss, Armin M. Nagel, Frederik B. Laun, Florian Knoll   +30 more
wiley   +1 more source

A Novel Convolutional Neural Network–Long Short-term Memory Model for Interplanetary Coronal Mass Ejection Detection

The Astrophysical Journal Supplement Series
Current models for detecting interplanetary coronal mass ejections (ICMEs) using spacecraft in situ measurements rely heavily on manual processes, resulting in time-consuming procedures, inconsistencies in identification criteria, and gaps in existing ...
Junpei Li, Hong Chen, Jingjing Wang, Yanhong Chen, Bingxian Luo, Hao Deng   +5 more
doaj   +1 more source