In this paper, application of principle of remote sensing to earthquake prediction is studied and an experiment was made,the experiment has obtained the infrared radiant characteristic and the radiant temperature of rock varying with the stress of rock,the variational order of radiance 10-5(W/cm2. sr. μm) ,the variational quantity of the radiant temperature 0. 2℃-0. 8℃ ,and some significant precursor information was discovered.
The overall process involves three steps: preparation of insoluble carboxyl-containing grafted starch copolymer (ISC), formation of precursor (ISC-Co), decomposition of ISC-Co, and phase transition of Co3O4 nanoparticles.
The precursor was proved to be [Zn5(OH)6(CO3)2] by TG-DTG-DTA and IR analysis.
This precursor was calcined at 300°C for 1, 2 and 3 hours respectively, and then the nanocrystalline ZnO of different grain size were obtained.
Steam produced during the decomposition process accelerated the sintering of MgO, and MgO with surface area as high as 412 m2 · g-1 was obtained through calcining its precursor in flowing dry nitrogen at 520°C for 4 h.
ZrWMoO8 powders with different morphologies were obtained using ammonium tungstate, molybdate tungstate and zirconium tungstate as the starting materials by dehydrating the precursor ZrWMoO7(OH)2(H2O)2.