Results 41 to 50 of about 3,666 (129)
Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 542-547, August 2026.ABSTRACT Purpose This study investigates the effect of VAPOR water suppression and metabolite cycling on metabolite quantification and macromolecules in proton magnetic resonance spectroscopy. Methods Single‐voxel semi‐LASER spectra (TR/TE = 3000/28 ms) and metabolite‐nulled spectra (macromolecules) were acquired in five healthy subjects in the ...
Dinesh K. Deelchand +1 more
wiley +1 more source
MR Spectroscopy Without Water Suppression Using the Gradient Impulse Response Function
Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 530-541, August 2026.ABSTRACT PurposeNon‐water‐suppressed proton spectroscopy, 1H‐MRS, is desirable, as retaining the strong water resonance can facilitate automated online data corrections, internal concentration referencing, and monitoring of line narrowing effects in functional MRS. Removal of the water suppression module can also mitigate magnetization transfer effects
James B. Bacon +2 more
wiley +1 more source
EM-Based Channel Estimation Algorithms for OFDM
EURASIP Journal on Advances in Signal Processing, 2004 Estimating a channel that is subject to frequency-selective Rayleigh fading is a challenging problem in an orthogonal frequency division multiplexing (OFDM) system.
Ma Xiaoqiang +2 more
doaj +1 more source
CPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 8, August 2026.ABSTRACT Aging is a systems‐level process linking metabolic dysfunction, inflammation, impaired repair, frailty, and multimorbidity, whereas existing pharmacological strategies usually optimize disease‐specific endpoints such as weight loss or HbA1c rather than aging‐related trajectories. We developed an SBML‐compliant quantitative systems pharmacology
Igor Goryanin, Bob Damms, Irina Goryanin
wiley +1 more source
Journal of Applied Crystallography, Volume 59, Issue 4, Page 1192-1199, August 2026.We demonstrate a Fisher‐information‐based strategy for optimizing the solid substrate structure in polarized neutron reflectometry experiments on soft‐matter samples. The approach identifies magnetic reference layer designs that improve experimentally accessible information and provides a general framework for more efficient reflectometry experiment ...
Ivan P. Yakimenko +14 more
wiley +1 more source
A non-data-aided SNR estimator based on maximum likelihood method for communication between orbiters
EURASIP Journal on Wireless Communications and Networking, 2020 Signal-to-noise ratio (SNR) is an important metric for performance assessment in numerous scenerios. In order to ensure the reliability and effectiveness of the system performance, plenty of situations require the information of SNR estimate. At the same
Zezhou Sun, Xin Gong, Fan Lu
doaj +1 more source
Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3
Annals of Clinical and Translational Neurology, Volume 13, Issue 7, Page 1452-1466, July 2026.ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende +26 more
wiley +1 more source
Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 4, July/August 2026.ABSTRACT This article investigates the Soret–Dufour cross‐diffusion effects on radiation‐absorptive unsteady free‐convection of magnetized nanofluids ( TiO2–water and Cu–water) flow over a vertical moving permeable plate. The model integrates thermal source, chemical reactions, porous resistance, and thermal radiation. The water‐based nanofluids mixing
B. Prabhakar Reddy +2 more
wiley +1 more source
Metalens‐Enabled Double‐Helix Point Spread Function for Multifunctional Imaging
Advanced Physics Research, Volume 5, Issue 7, July 2026.A single metalens is employed to generate a double‐helix point spread function (DH‐PSF). At the design wavelength, the PSF rotation angle varies linearly with depth, while the lobe spacing follows an inverse dependence on axial position. At a fixed depth, the lobe spacing further exhibits a linear dependence on wavelength due to dispersion.
Xuanyu Wu +8 more
wiley +1 more source
The Power Gain Difference Method Analysis
Sensors, 2020 In this paper, we propose a new approach to passively locate the 3D position of a signal source. This novel technique, called the power gain difference (PGD), is based only on measuring the received signal strength (RSS) with multiple sensors deployed in
Jiří Veselý +2 more
doaj +1 more source