Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Dagfinn W. Aksnes"'
Publikováno v:
Microporous and Mesoporous Materials. 77:79-87
The rotational and translational dynamics of cyclohexane and cyclopentane confined in a MCM-41 solid have been studied as a function of temperature by measuring the T1 and T2 relaxation times and diffusivities, and the results are compared with value
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b776c10e5e61b4ae5e5bfd0ad6153d7b
https://doi.org/10.1016/j.micromeso.2004.08.028
https://doi.org/10.1016/j.micromeso.2004.08.028
Publikováno v:
Magnetic Resonance in Chemistry. 40:S139-S146
When applying pulsed field gradient (PFG) NMR experiments to determine the molecular mobility characterized by the diffusion coefficient, it is crucial to have control over all experimental parameters that may affect the performance of the diffusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f61a38c3c43d99b0c028d0bce90e07bb
https://doi.org/10.1002/mrc.1112
https://doi.org/10.1002/mrc.1112
Publikováno v:
Microporous and Mesoporous Materials. 42:89-96
In this work the rotational and translational dynamics of cyclohexane confined in MCM-41 have been studied as a function of temperature by measuring intra-crystalline diffusivities and T1 and T2 relaxation times. The results are compared with values
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81da406d3ab875513e8f87c5169e910b
https://doi.org/10.1016/s1387-1811(00)00310-3
https://doi.org/10.1016/s1387-1811(00)00310-3
Publikováno v:
Microporous and Mesoporous Materials. 32:305-310
It is evident that the study of diffusion of molecules confined in microporous material, such as zeolites, gives valuable information about the chemical and geometrical properties of the pores. However, due to the limited size of the microporous crys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ee29e1e3c38a3df689644ebc01adee7
https://doi.org/10.1016/s1387-1811(99)00119-5
https://doi.org/10.1016/s1387-1811(99)00119-5
Publikováno v:
Magnetic Resonance in Chemistry. 36:769-772
1H and 13C NMR chemical shifts are reported for five anthraquinone glycosides from Rhamnus frangula (Alder Buckthorn). The investigation utilized data obtained by a variety of 1D and 2D NMR techniques such as homodecoupling, NOE, J-modulated spin-ech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21fe3173919ed88cf297f6e0ee610f72
https://doi.org/10.1002/(sici)1097-458x(1998100)36:10<769::aid-omr361>3.0.co
https://doi.org/10.1002/(sici)1097-458x(1998100)36:10<769::aid-omr361>3.0.co
Autor:
Dagfinn W. Aksnes, L. Kimtys
Publikováno v:
Magnetic Resonance in Chemistry. 36:747-754
The rotational and translational dynamics of hexamethyldisilane confined within silica pores of diameter 4, 6 and 20 nm were studied as a function of temperature by measuring 1H and 13C NMR linewidths, self-diffusion coefficients, spin–spin relaxat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e54e2aff55a0b726723a8f832cc9bf7
https://doi.org/10.1002/(sici)1097-458x(1998100)36:10<747::aid-omr388>3.0.co
https://doi.org/10.1002/(sici)1097-458x(1998100)36:10<747::aid-omr388>3.0.co
Autor:
Anne Mette Nygård, Bernard T. Kiremire, Dagfinn W. Aksnes, Linda Kidøy, Atle T. Pedersen, Øyvind M. Andersen
Publikováno v:
Journal of Food Composition and Analysis. 10:49-54
The analysis of anthocyanin pigments in the passion fruit Passiflora edulis and in the highly colored fruits of P. suberosa was performed using combinations of chromatographic and spectroscopic techniques. In addition to cyanidin 3-glucoside (97%), s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2944f9a14d678f6b03032a696e88b8d
https://doi.org/10.1006/jfca.1996.0514
https://doi.org/10.1006/jfca.1996.0514
Autor:
Bryan R. Wood, Stenbjörn Styring, Lauri Niinistö, Anne-Mette Nygård, Steen Uttrup Pedersen, Cecilia Tommos, Dagfinn W. Aksnes, Anne Kjersti Bakken, Kurt Warncke, Øyvind M. Andersen
Publikováno v:
Acta Chemica Scandinavica. 51:108-112
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc0fab7477973846d034490231d93308
https://doi.org/10.3891/acta.chem.scand.51-0108
https://doi.org/10.3891/acta.chem.scand.51-0108
Publikováno v:
Magnetic Resonance in Chemistry. 34:820-823
Complete assignment of the 1H and 13C NMR spectra of flavone and three flavone derivatives is reported. Proton–proton and carbon–proton coupling constants of the flavones, including the extreme seven-bond long-range coupling between H-7 and H-3 i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::905deb344a8504dff6c8575f77222ded
https://doi.org/10.1002/(sici)1097-458x(199610)34:10<820::aid-omr966>3.0.co
https://doi.org/10.1002/(sici)1097-458x(199610)34:10<820::aid-omr966>3.0.co
Publikováno v:
Phytochemical Analysis. 6:313-316
Using the nuclear magnetic resonance technique, two-dimensional inverse heteronuclear shift correlation through multiple quantum coherence (HMQC), the one-bond coupling constants between the carbon atoms and protons (1J(C, H)) have been measured for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ccfeb24583c6817d949d6bd0ff4b26d
https://doi.org/10.1002/pca.2800060608
https://doi.org/10.1002/pca.2800060608