Results 21 to 30 of about 1,557,777 (375)

Altered amide proton transfer weighted and diffusion signals in patients with multiple sclerosis: correlation with neurofilament light chain and disease duration

Frontiers in Neuroscience, 2023
ObjectivesTo compare the signal alterations of amide proton transfer (APT), apparent diffusion coefficient (ADC), and fractional anisotropy (FA) in white matter (WM) lesions in multiple sclerosis (MS), compared with healthy controls (HCs), and to ...
Jing Huang, Jing Huang, Yan Liang, Yi Shan, Yi Shan, Cheng Zhao, Cheng Zhao, Qiongge Li, Qiongge Li, Zhiwei Shen, Huiqing Dong, Zhigang Qi, Zhigang Qi, Jie Lu, Jie Lu   +14 more
doaj   +1 more source

Inhomogeneous nuclear spin polarization induced by helicity-modulated optical excitation of fluorine-bound electron spins in ZnSe [PDF]

, 2015
Optically-induced nuclear spin polarization in a fluorine-doped ZnSe epilayer is studied by time-resolved Kerr rotation using resonant excitation of donor-bound excitons.
Bayer, M., Greilich, A., Heisterkamp, F., Kazimierczuk, T., Kirstein, E., Korenev, V. L., Pawlis, A., Yakovlev, D. R., Yugova, I. A., Zhukov, E. A.   +9 more
core   +2 more sources

Measuring out-of-time-order correlators on a nuclear magnetic resonance quantum simulator [PDF]

, 2016
The idea of the out-of-time-order correlator (OTOC) has recently emerged in the study of both condensed matter systems and gravitational systems. It not only plays a key role in investigating the holographic duality between a strongly interacting quantum
Jun Li, Ruihua Fan, Hengyan Wang, B. Ye, B. Zeng, H. Zhai, X. Peng, Jiangfeng Du   +7 more
semanticscholar   +1 more source

An NMR-based nanostructure switch for quantum logic [PDF]

, 2000
We propose a nanostructure switch based on nuclear magnetic resonance (NMR) which offers reliable quantum gate operation, an essential ingredient for building a quantum computer.
B.E. Kane, D.G. Cory, G. Burkard, I.L. Chuang, I.L. Chuang, J.A. Jones, J.A. Jones, J.M. Kikkawa, John H. Reina, L. Quiroga, L.D. Hallam, Luis Quiroga, M. Wagner, N.A. Gershenfeld, N.F. Johnson, N.F. Johnson, N.F. Johnson, Neil F. Johnson, O.G. Schmidt, P.A. Maksym, R.C. Ashoori, S. Tarucha, S.C. Benjamin, S.W. Brown, V. Privman   +24 more
core   +2 more sources

LISA improves statistical analysis for fMRI

Nature Communications, 2018
Functional magnetic resonance imaging (fMRI) is a powerful technique for measuring human brain activity, but the statistical analysis of fMRI data can be difficult.
Gabriele Lohmann, Johannes Stelzer, Eric Lacosse, Vinod J. Kumar, Karsten Mueller, Esther Kuehn, Wolfgang Grodd, Klaus Scheffler   +7 more
doaj   +1 more source

Integrated Positron Emission Tomography/Magnetic Resonance Imaging for Resting-State Functional and Metabolic Imaging in Human Brain: What Is Correlated and What Is Impacted

Frontiers in Neuroscience, 2022
Integrated positron emission tomography (PET)/magnetic resonance imaging (MRI) could simultaneously obtain both functional MRI (fMRI) and 18F-fluorodeoxyglucose (FDG) PET and thus provide multiparametric information for the analysis of brain metabolism ...
Yi Shan, Yi Shan, Zhe Wang, Shuangshuang Song, Shuangshuang Song, Qiaoyi Xue, Qi Ge, Hongwei Yang, Hongwei Yang, Bixiao Cui, Bixiao Cui, Miao Zhang, Miao Zhang, Yun Zhou, Jie Lu, Jie Lu   +15 more
doaj   +1 more source

Invited Review Article: Instrumentation for nuclear magnetic resonance in zero and ultralow magnetic field. [PDF]

Review of Scientific Instruments, 2017
We review experimental techniques in our laboratory for nuclear magnetic resonance (NMR) in zero and ultralow magnetic field (below 0.1 μT) where detection is based on a low-cost, non-cryogenic, spin-exchange relaxation free 87Rb atomic magnetometer. The
M. Tayler, T. Theis, T. F. Sjolander, J. Blanchard, A. Kentner, S. Pustelny, A. Pines, D. Budker   +7 more
semanticscholar   +1 more source

Nuclear magnetic resonance gyroscopes [PDF]

2010 IEEE Sensors, 2010
Nuclear magnetic resonance gyroscopes (NMRGs) detect rotation as a shift in the Larmor precession frequency of nuclear spins. A review of the open literature on NMRGs is presented, which includes an introduction to the spectroscopic techniques that enable NMRGs and a discussion of the design details for several specific NMRGs that have been built.
E. A. Donley, J. Kitching
openaire   +4 more sources

Conformational dynamics in GPCR signaling by NMR

Magnetic Resonance Letters, 2022
G-protein-coupled receptors (GPCRs) mediate a wide range of cellular responses to various ligands or stimuli, and are the most important drug targets associated with human diseases.
Yunfei Hu, Changwen Jin
doaj  

Relaxation Effects in Nuclear Magnetic Resonance Absorption

, 1948
The exchange of energy between a system of nuclear spins immersed in a strong magnetic field, and the heat reservoir consisting of the other degrees of freedom (the "lattice") of the substance containing the magnetic nuclei, serves to bring the spin ...
N. Bloembergen, E. Purcell, R. Pound
semanticscholar   +1 more source