Results 31 to 40 of about 395,400 (125)

Function and dynamics of the intrinsically disordered carboxyl terminus of β2 adrenergic receptor

Nature Communications, 2023
Advances in structural biology have provided important mechanistic insights into signaling by the transmembrane core of G-protein coupled receptors (GPCRs); however, much less is known about intrinsically disordered regions such as the carboxyl terminus (
Jie Heng, Yunfei Hu, Guillermo Pérez-Hernández, Asuka Inoue, Jiawei Zhao, Xiuyan Ma, Xiaoou Sun, Kouki Kawakami, Tatsuya Ikuta, Jienv Ding, Yujie Yang, Lujia Zhang, Sijia Peng, Xiaogang Niu, Hongwei Li, Ramon Guixà-González, Changwen Jin, Peter W. Hildebrand, Chunlai Chen, Brian K. Kobilka   +19 more
doaj   +1 more source

Nuclear magnetic resonances in (In,Ga)As/GaAs quantum dots studied by resonant optical pumping [PDF]

Phys. Rev. B 89, 125304 (2014), 2014
The photoluminescence polarizations of (In,Ga)As/GaAs quantum dots annealed at different temperatures are studied as a function of external magnetic field (Hanle curves). In these dependencies, remarkable resonant features appear due to all-optical nuclear magnetic resonances (NMR) for optical excitation with modulated circular polarization ...
arxiv   +1 more source

Determination of Apparent Protein Molecular Weight in Solution by Diffusion Ordered NMR Spectroscopy

Chinese Journal of Magnetic Resonance, 2018
Diffusion ordered NMR spectroscopy (DOSY) can be used to determine the apparent molecular weight of proteins (Mprotein) by measuring self-diffusion coefficient (Dt-protein).
LI Hong-wei, YUAN Zhi-liang, XIA Bin
doaj   +1 more source

Multimodal CT Imaging Characteristics in Predicting Prognosis of Wake-Up Stroke

Frontiers in Neurology, 2021
Background: Multimodal CT imaging can evaluate cerebral hemodynamics and stroke etiology, playing an important role in predicting prognosis. This study aimed to summarize the comprehensive image characteristics of wake-up stroke (WUS), and to explore its
Fan Yu, Fan Yu, Xuesong Bai, Xuesong Bai, Arman Sha, Arman Sha, Miao Zhang, Miao Zhang, Yi Shan, Yi Shan, Daode Guo, Daode Guo, Adam A. Dmytriw, Qingfeng Ma, Liqun Jiao, Liqun Jiao, Liqun Jiao, Jie Lu, Jie Lu   +18 more
doaj   +1 more source

All-optical NMR in semiconductors provided by resonant cooling of nuclear spins interacting with electrons in the resonant spin amplification regime [PDF]

Phys. Rev. B 90, 085311 (2014), 2014
Resonant cooling of different nuclear isotopes manifested in optically-induced nuclear magnetic resonances (NMR) is observed in n-doped CdTe/(Cd,Mg)Te and ZnSe/(Zn,Mg)Se quantum wells and for donor-bound electrons in ZnSe:F and GaAs epilayers. By time-resolved Kerr rotation used in the regime of resonant spin amplification we can expand the range of ...
arxiv   +1 more source

Incidental screening of descending colon carcinoma by 18F-FDG PET/MR imaging in a patient with endometrial carcinoma: A case report of Lynch syndrome

Frontiers in Oncology, 2023
BackgroundLynch syndrome (LS) is associated with the early onset of carcinoma and the development of numerous types of carcinoma, particularly endometrial and colon carcinomas.
Xiaoran Li, Xiaoran Li, Xian Zhang, Bixiao Cui, Bixiao Cui, Jie Ma, Jie Ma, Shijun Wang, Jie Lu, Jie Lu   +9 more
doaj   +1 more source

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

Phys. Rev. B 92, 245441 (2015), 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. Excitation with helicity-modulated laser pulses results in a transverse nuclear spin polarization, which is detected as a change of the Larmor precession frequency of the donor-bound ...
arxiv   +1 more source

Left ventricular dyssynchrony measured by cardiovascular magnetic resonance-feature tracking in anterior ST-elevation myocardial infarction: relationship with microvascular occlusion myocardial damage

Frontiers in Cardiovascular Medicine, 2023
ObjectivesCardiovascular magnetic resonance-feature tracking (CMR-FT) enables quantification of myocardial deformation and may be used as an objective measure of myocardial involvement in ST-elevation myocardial infarction (STEMI).
Zheng Sun, Zheng Sun, Yu Wang, Yingying Hu, Fang Wu, Fang Wu, Nan Zhang, Zhi Liu, Jie Lu, Jie Lu, Kuncheng Li, Kuncheng Li   +11 more
doaj   +1 more source

Nuclear Magnetic Resonance in a Ferromagnet-Semiconductor Heterostructure [PDF]

, 2003
We report the observation of nuclear magnetic resonance (NMR) in a ferromagnet-semiconductor heterostructure in the presence of a spin-polarized current. Spin-polarized electrons injected from a metallic ferromagnet generate a large nuclear spin population in a GaAs quantum well by dynamic polarization.
arxiv   +1 more source

Nuclear Magnetic Resonance Imaging with 90 nm Resolution [PDF]

Nature Nanotech. 2, 301 (2007), 2007
Magnetic resonance imaging, based on the manipulation and detection of nuclear spins, is a powerful imaging technique that typically operates on the scale of millimeters to microns. Using magnetic resonance force microscopy, we have demonstrated that magnetic resonance imaging of nuclear spins can be extended to a spatial resolution better than 100 nm.
arxiv   +1 more source