Results 61 to 70 of about 3,223,690 (300)

Intra- and inter-metabolite correlation spectroscopy of tomato metabolomics data obtained by liquid chromatography-mass spectrometry and nuclear magnetic resonance [PDF]

, 2008
Nuclear magnetic resonance (NMR) and liquid chromatography-mass spectrometry (LCMS) are frequently used as technological platforms for metabolomics applications.
de Vos, C.H., Moco, S.I.A., Forshed, J., Vos, C.H., de, Bino, R.J., Vervoort, J.J.M.   +5 more
core   +1 more source

Explainable AI to Facilitate Understanding of Neural Network-Based Metabolite Profiling Using NMR Spectroscopy

Metabolites
Neural networks (NNs) are emerging as a rapid and scalable method for quantifying metabolites directly from nuclear magnetic resonance (NMR) spectra, but the nonlinear nature of NNs precludes understanding of how a model makes predictions.
Hayden Johnson, Aaryani Tipirneni-Sajja
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Theoretical and Experimental Investigations in MEMS-Based Force-Detected NMR [PDF]

, 2005
This thesis describes a method of mechanically detecting magnetic resonance. The detector consists of a ferromagnet harmonically bound to a mechanical resonator and measures a magnetic force of interaction with a nearby sample via dipole-dipole coupling.
Elgammal, Ramez Ahmed
core   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Comparative cost-effectiveness analyses of cardiovascular magnetic resonance and coronary angiography combined with fractional flow reserve for the diagnosis of coronary artery disease. [PDF]

, 2014
According to recent guidelines, patients with coronary artery disease (CAD) should undergo revascularization if significant myocardial ischemia is present.
Pilz, G., Steffen E Petersen, Pilz, G, Petersen, SE, Wasserfallen, J-B, Guenter Pilz, Petersen, S.E., Favre, David, Petersen, Steffen E., Anja Wagner, Schwitter, J.J., Pinget, C, Favre, D., Wagner, A, Wagner, A., Jean-Blaise Wasserfallen, Karine Moschetti, Moschetti, K., Moschetti, Karine, Wasserfallen, JB, Schwitter, J, Schwitter, Juerg, Wasserfallen, Jean-Blaise, David Favre, Schwitter, JJ, Christophe Pinget, Pinget, Christophe, Wasserfallen, J.B., Pilz, Guenter, Pinget, C., Wagner, Anja, Juerg J Schwitter, Moschetti, K, Favre, D   +33 more
core   +1 more source

Dimerization-induced conformational transitions of yeast iso-1 cytochrome c

Magnetic Resonance Letters
Cytochrome c is a multifunctional protein involved in electron transport and apoptosis. However, its conformational landscape is complex and heterogeneous, which has obscured the functional understanding—particularly regarding its long-observed dimerized
Qianwen Wang, Peng Sun, Qin Hu, Mojie Duan, Guangqing Zhang, Jianhua Zhan, Minghui Yang, Qinjun Zhu, Bin Yuan, Bin Jiang, Lichun He, Maili Liu, Xu Zhang, Danyun Zeng   +13 more
doaj   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Embroidered Coils for Magnetic Resonance Sensors [PDF]

, 2013
Magnetic resonance imaging is a widely used technique for medical and materials imaging. Even though the objects being imaged are often irregularly shaped, suitable coils permitting the measurement of the radio-frequency signal in these systems are ...
Newton, Michael, Dias, Tilak, Glen McHale, Tilak Dias, Michael Newton, Morris, Robert, McHale, Glen, Robert Morris   +7 more
core   +1 more source

Cardiac magnetic resonance spectroscopy

Current Cardiology Reports, 2003
This review describes recent advances in cardiac magnetic resonance spectroscopy (MRS). MRS allows noninvasive characterization of the metabolic state of cardiac muscle, in both animal and human models. Recent experimental MRS studies have allowed new insights into the essential role of energetics in heart failure. Various new studies suggest a rapidly
openaire   +3 more sources