𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A 1H-NMR method for determining temperature in cell culture perfusion systems

✍ Scribed by N. W. Lutz; A. C. Kuesel; W. E. Hull


Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
560 KB
Volume
29
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

This report describes a noninvasive ^1^H‐NMR method for measuring absolute temperatures (Β±0.2Β°C) in biological samples and, in particular, in cell culture perfusion systems, utilizing the linear temperature dependence of the water chemical shift relative to the temperature‐independent shift of one of the components of the biological medium, e.g., pyruvate, acetate, or lactate. The effects of flow on temperature can be monitored and appropriate adjustments of the temperature controller can be made.


πŸ“œ SIMILAR VOLUMES


Gel-entrapment of perfluorocarbons: A fl
✍ K. A. McGovern; J. S. Schoeniger; J. P. Wehrle; C. E. Ng; J. D. Glickson πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 844 KB

## Abstract Oxygenation is a major determinant of the physiological state of cultured cells. ^19^F NMR can be used to determine the oxygen concentration available to cells immobilized in a gel matrix by measuring the relaxation rate (1/T~1~) of perfluorocarbons (PFC) incorporated into the gel matri

Analytical expressions for the NMR appar
✍ Edward W. Hsu; Susumu Mori πŸ“‚ Article πŸ“… 1995 πŸ› John Wiley and Sons 🌐 English βš– 932 KB

## Abstract NMR measurements of anisotropic diffusion were studied using a three‐dimensional random‐walk model. It was found that the apparent diffusion coefficient can be expressed in a canonical form as the product of a diagonal matrix, an orthonormal rotation matrix, and a vector representing th