Forced aging

M. L. Andersen, L. H. Skibsted, Electron spin resonance spin trapping identification of radicals formed during aerobic forced ageing of beer, J. Agric. Food Chem., 46... 

Base, H.W. A comprehensive study on the forced aging of flue-cured tobacco leaves Han guk Nonghwahakhoe Chi 13 (1970) 1-27. 

Wine Group 2 - Forced Aging experimental protocol This protocol is similar to that of a previous study (5/ Red port wine, 2 years-old (8L), with a pH=3.7, a dissolved oxygen content of 4.2 mg/L, an instantaneous potential of 222 mV and a free SO2 level of 17 mg/L, was prepared in order to analyze the effect of parameters believed to be important in the aromatic modification of port wines, namely temperature, oxygen concentration, pH and SO2 concentration (Figure 1). 

Figure 1. Schematic representation of the preparation of the forced aging ...

Figure 7. 3-hydroxy-4,5-dimethyl-2(5H)-fiiranone (Sotolon), concentrations in samples of a "forced aging experiment and the relative rate offormation (RRF) for treatments 02 /pH3.0 at T = 60 °C. 

Results from the analysis of some single base propellant, having undergone forced ageing, are shown in Fig.21. The loss in weight for the propellant has also been determined. It... 

A crossed-fiber technique was used in [68] to determine that the adhesion of quartz fibers increases with increasing temperature. For a 10" N solution of MgS04 in the temperature interval of 33-43°C, a sharp jump in the adhesive force was observed, after which the adhesive force remained practically unchanged. Also, as the solution temperature was increased, the time required to reach the equilibrium level of adhesive force (aging time) decreased. Here the increase in adhesive force could be explained by the decrease in disjoining pressure of the liquid layer in the contact zone, which takes place as a result of the decrease in its equilibrium thickness as the temperature of the medium is increased. 

To study free radical formation in a beer sample a spin trapping agent is added to the beer and incubated at 60 °C. This forced aging accelerates the free radical oxidation process to a... 

Compressive stress relaxation, retained force, % Aged in SAE 5W30 Oil 168 h at 15(fC-change 43 68 66... 

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