Results 81 to 90 of about 176,666 (301)

Kinetic Regimes of Hydrogen Absorption in Thin Films

Advanced Functional Materials, EarlyView.
Knowledge of the hydrogen incorporation mechanisms in thin layers in relation to the amount absorbed is essential to design coatings and devices compatible with hydrogen‐based technologies. A combination of simultaneous in situ methods gives detailed insight into the hydrogenation of a prototypical hydrogen absorber layer in a time‐dependent manner ...
Laura Guasco, Sabine Pütter, Yury N. Khaydukov, Luca Silvi, Mariano A. Paulin, Attila Csik, Thomas Keller, Bernhard Keimer   +7 more
wiley   +1 more source

Diagnostic interplay of proton magnetic resonance spectroscopy and diffusion weighted images with apparent diffusion coefficient values in suspicious breast lesions

The Egyptian Journal of Radiology and Nuclear Medicine, 2018
Aim of the work: To study the diagnostic performance of combined single voxel 1H-MRS and DW-MRI with ADC values as a non-contrast diagnostic tool, compared to the DCE-MRI, in suspicious breast lesions. Materials and methods: 113 female patients (mean age
Rania E. Mohamed, Hossam A. Zytoon, Mohamed A. Amin   +2 more
doaj   +1 more source

Rapid and Quantitative Chemical Exchange Saturation Transfer (CEST) Imaging with Magnetic Resonance Fingerprinting (MRF)

, 2017
Purpose: To develop a fast magnetic resonance fingerprinting (MRF) method for quantitative chemical exchange saturation transfer (CEST) imaging. Methods: We implemented a CEST-MRF method to quantify the chemical exchange rate and volume fraction of the
Cohen, Ouri, Farrar, Christian T., Huang, Shuning, McMahon, Michael T., Rosen, Matthew S.   +4 more
core   +1 more source

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

Advanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He, Fanmengjing Wang, Dehua Dong, Yuan Kang, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Douglas R. MacFarlane, Huanting Wang   +8 more
wiley   +1 more source

Precision spectroscopy of antiprotonic helium [PDF]

, 2007
Antiprotonic helium, a neutral exotic three-body system consisting of a helium nucleus, an electron and an antiproton, is being studied at the Antiproton Decelerator of CERN by the ASAUCSA collaboration.
Widmann, Eberhard
core   +2 more sources

Measurement of the hyperfine splitting of the 6S$_{1/2}$ level in rubidium [PDF]

, 2008
We present a measurement of the hyperfine splitting of the 6S$_{1/2}$ excited level of rubidium using two photon absorption spectroscopy in a glass cell. The values we obtain for the magnetic dipole constant A are 239.18(03) MHz and 807.66(08) MHz for $^{
A. Corney, A. Pérez Galván, C. Delsart, D. Budker, E. Gómez, H. Kopfermann, L. A. Orozco, L. Armstrong, S. Stenholm, W. Pauli, W. R. Johnson, Y. Zhao   +11 more
core   +1 more source

Assembly of Cell‐Seeded 3D Printed Hydrogel Modules with Perfusable Channel Networks

Advanced Functional Materials, EarlyView.
Macroscale assembly was utilized to prepare perfusable tissue constructs from individually 3D printed hydrogel modules with embedded branched channel networks and port arrays for cell seeding. Novel multi‐material bioreactors were fabricated to facilitate the gluing of individual modules and the perfusion culture of assembled modular constructs seeded ...
Zachary J. Geffert, Daniel Fougnier, Bo Van Durme, Jenna Grutzmacher, Ryan Clarke, Susan Cao, Zhenghao Li, Ujjwal Aryal, Jason A. Horton, Sandra Van Vlierberghe, Pranav Soman   +10 more
wiley   +1 more source

The neurochemical basis of human cortical auditory processing: combining proton magnetic resonance spectroscopy and magnetoencephalography

BMC Biology, 2006
Background A combination of magnetoencephalography and proton magnetic resonance spectroscopy was used to correlate the electrophysiology of rapid auditory processing and the neurochemistry of the auditory cortex in 15 healthy adults.
Tollkötter Melanie, Michael Nikolaus, Sörös Peter, Pfleiderer Bettina   +3 more
doaj   +1 more source

Direct high-precision measurement of the magnetic moment of the proton

, 2014
The spin-magnetic moment of the proton $\mu_p$ is a fundamental property of this particle. So far $\mu_p$ has only been measured indirectly, analysing the spectrum of an atomic hydrogen maser in a magnetic field. Here, we report the direct high-precision
A Mooser, A Mooser, A. Mooser, C. C. Rodegheri, C. Leiteritz, C. Smorra, CC Rodegheri, D Hanneke, DJ Wineland, DS Sivia, EA Cornell, G Gabrielse, H Häffner, H. Kracke, HG Dehmelt, J Beringer, J DiSciacca, J DiSciacca, J DiSciacca, J. Walz, K. Blaum, K. Franke, LS Brown, LS Brown, PF Winkler, R Bluhm, R Pohl, RK Mittleman, RS Van Dyck, RS Van Dyck Jr, S Sturm, S Sturm, S Ulmer, S Ulmer, S Ulmer, S. Ulmer, SG Karshenboim, W. Quint   +37 more
core   +1 more source

Observation of force-detected nuclear magnetic resonance in a homogeneous field [PDF]

, 2004
We report the experimental realization of BOOMERANG (better observation of magnetization, enhanced resolution, and no gradient), a sensitive and general method of magnetic resonance.
Leskowitz, G. M., Madsen, L. A., Weitekamp, D. P.   +2 more
core   +1 more source