Though the catalyst formed by γ-Fe_2O_3 had higher initial activity than that of formed by α-Fe_2O_3,but γ-Fe_2O_3 structural instability would result in lower catalyst intensity,higher particle density and lower heat resistance performance.
Through the method of orthogonal test, the effect of category of coal, blending and various ingredients of briquette additive on the thermal stability of briquette is studied, it believe that blending and optimized additive formula are the effective measures for improving the thermal stability of briquette, in certain scope, increasing additive ingredients with good heat resisting property is favorable for the improving heat resistance of briquette.
The results shown that the nano-metal(copper and tungsten) particles in hybrid were still in the shape of sphere, and the diameter were,about 5~20nm,most of them were about 15 nm. The glass-transition temperature and the heat resisting property of the hybrid material were increased because of the interaction between the key of C=C and the nano-metal(copper and tungsten) particles.
Changes in Heat Resistance of the Muscle and Glycerinated Muscle Fibers of Green Toad (Bufo viridis complex)
Heat resistance of muscles and actomyosin proteins was determined at damaging temperatures of 41, 42, and 43°C in three green toad (Bufo viridis complex) populations from different climatic zones of Uzbekistan.
The variability of heat resistance of the muscle and models was also the highest in toads of the first group.
Heat resistance of the skeletal muscle in Western Palearctic green frogs (Rana esculenta complex)
Heat resistance of the gastrocnemius muscle was studied in five species of the Rana esculenta complex.