Zobrazeno 1 - 10 of 30 pro vyhledávání: '"H. J. Jakobsen"'
1
SOLID-STATE 13C AND 31P NMR ANALYSIS OF URINARY STONES
Autor: M, Bak, J K, Thomsen, H J, Jakobsen, S E, Petersen, T E, Petersen, N C, Nielsen
Publikováno v: The Journal of Urology. :856-863
We investigated the applicability of solid-state nuclear magnetic resonance (NMR) spectroscopy to obtain information about the structure and composition of renal calculi.Various types urinary and bladder stones as well as a variety of presumed consti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abc3d16561b30d8a76a8959cd52908c0
https://doi.org/10.1097/00005392-200009010-00062
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2
Sensitivity-Enhanced Quadrupolar-Echo NMR of Half-Integer Quadrupolar Nuclei. Magnitudes and Relative Orientation of Chemical Shielding and Quadrupolar Coupling Tensors
Autor: H. J. Jakobsen, and Paul D. Ellis, Niels Chr. Nielsen, Flemming H. Larsen
Publikováno v: The Journal of Physical Chemistry A. 101:8597-8606
A novel approach to quadrupolar-echo (QE) NMR of half-integer quadrupolar nuclei in static powders is analyzed. By acquisition of the QE spectrum during a Carr−Purcell−Meiboom−Gill (CPMG) train of selective π pulses, the second-order quadrupol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::572a16c6728e3e18197291a9284b450e
https://doi.org/10.1021/jp971547b
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4
Quantification of thaumasite in cementitious materials by 29Si {1H} cross-polarization magic-angle spinning NMR spectroscopy
Autor: H. J. Jakobsen, L. Hjorth, J. Skibsted
Publikováno v: Advances in Cement Research. 7:69-83
29Si {1H} cross-polarization (CP) magic-angle spinning (MAS) nuclear nagnetic resonance (NMR) is shown to be a valuable tool for detection and quantification of thaumasite in cementitious systems. A 29Si {1H} CPIMAS NMR method for quantitative analys
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b20183a06c7e0fe97a80f906b998393f
https://doi.org/10.1680/adcr.1995.7.26.69
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5
Double‐quantum homonuclear rotary resonance: Efficient dipolar recovery in magic‐angle spinning nuclear magnetic resonance
Autor: H. J. Jakobsen, Malcolm H. Levitt, Niels Chr. Nielsen, H. Bildso
Publikováno v: The Journal of Chemical Physics. 101:1805-1812
We describe an efficient method for the recovery of homonuclear dipole–dipole interactions in magic‐angle spinning NMR. Double‐quantum homonuclear rotary resonance (2Q‐HORROR) is established by fulfilling the condition ωr=2ω1, where ωr is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f9987c3a64339d96974c522c49f357f
https://doi.org/10.1063/1.467759
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8
Multiphase characterization of phosphorus sulfides by multidimensional and magic angle spinning-31P NMR spectroscopy. Molecular transformations and exchange pathways at high temperatures
Autor: H. J. Jakobsen, T. Bjorholm
Publikováno v: Journal of the American Chemical Society. 113:27-32
High-temperature 1D and 2D exchange {sup 31}P-NMR spectra of melts of pure and well-defined phosphorus sulfides shown that, e.g., {beta}-P{sub 4}S{sub 5} or mixtures of P{sub 4}S{sub 3} and sulfur transform into mixtures of at least eight different P
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25dc4e845061bdf1495ab26d6f421d7a
https://doi.org/10.1021/ja00001a005
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