Zobrazeno 1 - 10
of 145
pro vyhledávání: '"H Peemoeller"'
Autor:
Jaspreet Walia, Claude Lemaire, Joshua Crone, Mohamad Niknam, Jianzhen Liang, H. Peemoeller, R. Terry Thompson
Publikováno v:
Solid State Nuclear Magnetic Resonance. :26-32
The proton MAS NMR spectra in MCM-41 at low hydration levels (less than hydration amounting to one water molecule per surface hydroxyl group) show complex proton resonance peak structures, with hydroxyl proton resonances seen in dry MCM-41 disappeari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f64a4aabeb2ec176469e4d88d097a1d
https://doi.org/10.1016/j.ssnmr.2012.11.003
https://doi.org/10.1016/j.ssnmr.2012.11.003
Autor:
Claude Lemaire, Roshanak Teymoori, R. Holly, M. Jason Hinek, Jianzhen Liang, Władysław P. Węglarz, Ian D. Hartley, H. Peemoeller, Firas K. Mansour, Joshua Crone
Publikováno v:
Polymer. 54:1524-1529
A liquid-like phase, which cannot be assigned to water, has been observed in dry aspen wood using proton Nuclear Magnetic Resonance (NMR). This phase appears at approximately 45 °C as the temperature of the wood sample is increased from room tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::330f9632ef3cbacb8355d474aeeb6b67
https://doi.org/10.1016/j.polymer.2012.12.081
https://doi.org/10.1016/j.polymer.2012.12.081
Publikováno v:
Microporous and Mesoporous Materials. 162:136-142
In Magic Angle Spinning (MAS) Nuclear Magnetic Resonance (NMR) experiments, involving silica-based porous media, containing surface OH groups and water, it is generally observed that the water proton and OH group proton resonances tend to coalesce wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa770529ecad8c1bec157266b74ee7ac
https://doi.org/10.1016/j.micromeso.2012.06.010
https://doi.org/10.1016/j.micromeso.2012.06.010
Publikováno v:
Solid State Nuclear Magnetic Resonance. :23-29
Water behavior on the pore surface of nano-silica MCM-41, at a hydration level corresponding to one water molecule per OH group, is studied using (2)H NMR spectra in the temperature range 213 to 313 K. In an earlier study [J. Hassan, E. Reardon, H. P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c48ee5bd3367f19f2d1ae932f0311260
https://doi.org/10.1016/j.ssnmr.2012.04.004
https://doi.org/10.1016/j.ssnmr.2012.04.004
Publikováno v:
Materials
Materials, Vol 4, Iss 1, Pp 131-140 (2010)
Volume 4
Issue 1
Pages 131-140
Materials, Vol 4, Iss 1, Pp 131-140 (2010)
Volume 4
Issue 1
Pages 131-140
In this study, wood-water interactions of mountain pine beetle affected lodgepole pine were found to vary with time since death. Based on an analysis of magnetization components and spin-spin relaxation times from 1H NMR, it was determined that the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b49c8238db6a119e3a004b2050f24f7
http://europepmc.org/articles/PMC5448470
http://europepmc.org/articles/PMC5448470
Publikováno v:
Journal of Magnetic Resonance. 207:287-293
Assuming dipole–dipole interaction as the dominant relaxation mechanism of protons of water molecules adsorbed onto macromolecule (biopolymer) surfaces we have been able to model the dependences of relaxation rates on temperature and frequency. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1823d44433d2e67c3367d55ee39e1e8
https://doi.org/10.1016/j.jmr.2010.09.012
https://doi.org/10.1016/j.jmr.2010.09.012
Publikováno v:
Medical Physics. 36:5341-5346
Purpose: This article presents an initial investigation of the efficacy of using H 1 MRS and micro-MRI as analysis techniques for irradiated GAFCHROMIC EBT®radiotherapyfilms. Methods: GAFCHROMIC® EBT radiotherapyfilm was irradiated with 6 MV x rays
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc51be416201cc4a1053c2648fdbac51
https://doi.org/10.1118/1.3242216
https://doi.org/10.1118/1.3242216
Publikováno v:
Microporous and Mesoporous Materials. 122:121-127
The elucidation of water molecule dynamics on surfaces and in confined geometry using NMR techniques is facilitated by knowledge about the different hydration sites involved and about the correlation between NMR spectral features and such sites. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9532dfa195f5c887eedc3fe3653d3f80
https://doi.org/10.1016/j.micromeso.2009.02.018
https://doi.org/10.1016/j.micromeso.2009.02.018
Publikováno v:
Cement and Concrete Research. 37:369-377
This study examined the advantages and limitations of imaging cement paste with magnetic resonance imaging (MRI) using the single point imaging (SPI) sequence. Cement paste samples made with low water to cement (w/c) ratios were examined. The resolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1f51c10d943b6dae93b9e000fa0f539
https://doi.org/10.1016/j.cemconres.2006.07.003
https://doi.org/10.1016/j.cemconres.2006.07.003
Publikováno v:
Journal of the American Ceramic Society. 90:570-577
The chemical and microstructural changes within a white cement paste were characterized in situ using proton nuclear magnetic resonance spin–spin relaxation at 30 MHz, and X-ray diffraction. Paste samples with a water-to-cement ratio of 0.42 were c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9902f56d634db4e798a0b625d57cc4b2
https://doi.org/10.1111/j.1551-2916.2006.01422.x
https://doi.org/10.1111/j.1551-2916.2006.01422.x