Zobrazeno 1 - 10
of 187
pro vyhledávání: '"M. Engelsberg"'
Publikováno v:
Langmuir. 26:9703-9709
(7)Li and (1)H nuclear magnetic resonance together with X-ray diffraction measurements in powdered samples and pseudocrystalline films of synthetic fluorhectorite as a function of relative ambient humidity permit to address several aspects of the str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::269730ee099837c2031b038191a9b3df
https://doi.org/10.1021/la100377s
https://doi.org/10.1021/la100377s
Autor:
Eduardo N. de Azevedo, M. Engelsberg
Publikováno v:
Langmuir. 25:1175-1180
The anisotropy of the diffusivity of water molecules, probed via (1)H nuclear magnetic resonance imaging techniques, is used to study the extremely slow dynamics in the nematic phase of synthetic Na-fluorhectorite platelets in aqueous suspension. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eedf5302e1d74bb9fa8400aca677458
https://doi.org/10.1021/la803110f
https://doi.org/10.1021/la803110f
Publikováno v:
The Journal of Physical Chemistry C. 112:575-580
Proton and deuterium NMR measurements are performed in Na-fluorhectorite powdered samples. The results are compared with NMR data from other 2:1 clays, and with the recent results of molecular simu...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f80c71b9872f114181d6d0be1af3604
https://doi.org/10.1021/jp0766407
https://doi.org/10.1021/jp0766407
Publikováno v:
Langmuir. 23:5100-5105
Diffusion-weighted magnetic resonance imaging provides a vivid description of the little understood role played by interfacial interactions with macroscopic bodies in the cooperative self-assembly of clay nanoplatelets suspended in water. The interfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ed6b30facc055cd9f8a68afbc011afe
https://doi.org/10.1021/la0632629
https://doi.org/10.1021/la0632629
Autor:
M. Engelsberg, Wilson Barros
Publikováno v:
Journal of Magnetic Resonance. 184:101-107
Proton–electron double-resonance imaging (PEDRI) was recently employed to monitor the process of formation of a calcium alginate hydrogel at a field of 16 mT. Here, under the same experimental conditions, images obtained through this technique are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d4ca4380706e666ff7f44f774d6fa1c
https://doi.org/10.1016/j.jmr.2006.09.020
https://doi.org/10.1016/j.jmr.2006.09.020
Publikováno v:
Analytical Chemistry. 79:1271-1274
A new method, based on continuous wave-free precession nuclear magnetic resonance, is proposed as a high-throughput technique for measuring the oil content of intact seeds. The method has the potential to analyze more than 20 000 intact seeds per hou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95df77ca8c216240cd38cfc810904b96
https://doi.org/10.1021/ac062091+
https://doi.org/10.1021/ac062091+
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 281:99-104
Transparent aluminum polyphosphate hydrogels were synthesized, aged under different humidity conditions and characterized by NMR and complex impedance spectroscopy in order to elucidate the prevailing ionic transport mechanism. The ionic conductivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::112571e1b51ef7ca719eecc144f9b479
https://doi.org/10.1016/j.colsurfa.2006.02.021
https://doi.org/10.1016/j.colsurfa.2006.02.021
Publikováno v:
The Journal of Chemical Physics. 120:10659-10665
Proton NMR two-dimensional 2-D spectra of binary mixtures, obtained with the correlation spectroscopy revamped by asymmetric Z gradient echo detection pulse sequence, were employed to test various assumptions usually adopted to describe the role of d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ece97e73b16420fc19dc1990f0a60db
https://doi.org/10.1063/1.1736631
https://doi.org/10.1063/1.1736631
Publikováno v:
Journal of Magnetic Resonance. 165:175-179
Intermolecular double-quantum coherence (i-DQC) signals in liquids are usually associated with high magnetic fields. We demonstrate that, in a magnetic field of only 16 mT, i-DQC imaging of water protons is feasible thanks to the nuclear magnetizatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1010c20673e392fbb5a31c53ce2c3156
https://doi.org/10.1016/s1090-7807(03)00277-5
https://doi.org/10.1016/s1090-7807(03)00277-5
Publikováno v:
Analytica Chimica Acta. 478:313-320
The use of continuous wave free precession (CWFP) as a practical analytical tool for quantitative determinations in low-resolution nuclear magnetic resonance (LRNMR) is examined. The requirements of this technique are shown to be no more demanding th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b03bcd45affb0e160a550e7046f80f02
https://doi.org/10.1016/s0003-2670(02)01514-3
https://doi.org/10.1016/s0003-2670(02)01514-3