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pubmed-article:15953762pubmed:issue1-3lld:pubmed
pubmed-article:15953762pubmed:dateCreated2005-10-31lld:pubmed
pubmed-article:15953762pubmed:abstractTextThe CP/MAS (13)C NMR line shape of cellulose I has been qualitatively analyzed by direct simulations using the Ornstein-Uhlenbeck stochastic process and the Kubo model. Both approaches describe a anhydroglucose C4 carbon as a oscillator with fluctuating Larmor frequency. The NMR resonance frequency is written omega=omega +omega(t), where the fluctuating part with zero mean was modelled as a stationary Markov diffusion process. The simulation results both motivates the use of multiple line shapes when fitting CP/MAS (13)C NMR spectra recorded on cellulose I and gives some insights into why signals from crystalline cellulose I give rise to Lorentzian line shapes.lld:pubmed
pubmed-article:15953762pubmed:languageenglld:pubmed
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pubmed-article:15953762pubmed:statusMEDLINElld:pubmed
pubmed-article:15953762pubmed:monthNovlld:pubmed
pubmed-article:15953762pubmed:issn1386-1425lld:pubmed
pubmed-article:15953762pubmed:authorpubmed-author:WestlundPer-O...lld:pubmed
pubmed-article:15953762pubmed:authorpubmed-author:LarssonPer...lld:pubmed
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pubmed-article:15953762pubmed:volume62lld:pubmed
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pubmed-article:15953762pubmed:pagination539-46lld:pubmed
pubmed-article:15953762pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:15953762pubmed:year2005lld:pubmed
pubmed-article:15953762pubmed:articleTitleLine shapes in CP/MAS (13)C NMR spectra of cellulose I.lld:pubmed
pubmed-article:15953762pubmed:affiliationSTFI-Packforsk AB, SE-114 86 Stockholm, Sweden. tomas.larsson@stfi.selld:pubmed
pubmed-article:15953762pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15953762pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed