𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Partial degrees of substitution in cellulose nitrates determined by means of 13C magnetic resonance studies

✍ Scribed by D.T. Clark; P.J. Stephenson; F. Heatley

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
624 KB
Volume
22
Category
Article
ISSN
0032-3861

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

13C-Isotopic Enrichment of Glutathione i
13C-Isotopic Enrichment of Glutathione in Cell Extracts Determined by Nuclear Magnetic Resonance Spectroscopy
✍ Michael P. Gamcsik πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 83 KB

An NMR method was developed for measuring the isotopic enrichment of glutathione in extracts of cells fed a medium containing [3,3-13 C 2 ]cystine. Two sublines of human mammary adenocarcinoma MCF-7 cells were exposed to growth medium containing the labeled cystine for varying periods, treated with

Determination of substituent distributio
Determination of substituent distribution in cellulose acetate by means of a 13C NMR study on its propanoated derivative
✍ Yasuyuki Tezuka; Yoshikazu Tsuchiya πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 395 KB

Cellulose acetate (1) is commercially important, and is produced with various degrees of substitution (DS) suitable for such applications as fibers, plastics, films, and coatings [1]. The final properties of these products may be optimized through control of the distribution pattern of acetyl groups

Measurement of adsorption isotherms of c
Measurement of adsorption isotherms of carbon monoxide in zeolites by means of 13C nuclear magnetic resonance spectroscopy
✍ A. Michael; D. Michael; H. Pfeifer πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 313 KB

A method is proposed which enables simultaneous measurement of adsorption isotherms by means of nuclear magnetic resonance spectroscopy and the determination of NMR parameters. The method was checked for CO molecules sorbed in decationated Y-type zeolites.

Transmission of the substituent effects
Transmission of the substituent effects in 2-substituted benzimidazoles studied by 1H and 13C nuclear magnetic resonance
✍ V. A. Lopyrev; L. I. Larina; T. I. Vakul'skaya; M. F. Larin; O. B. Nefedova; E. πŸ“‚ Article πŸ“… 1981 πŸ› John Wiley and Sons 🌐 English βš– 503 KB

## Abstract The substituent influence on the ^1^H and ^13^C NMR chemical shifts in 2‐substituted benzimidazoles and their anions and cations has been investigated. The transmission of the electronic effects of substituents from C‐2 to C‐5 (6) is approximately 20% less effective than that in the opp