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This paper introduces the failure law of the floating structures by an engineering examples of the up-floating accident. The reasons of the accident are insufficience of anti-floating anchor rod, short of the length of anchor rod and early termination of precipitation, according to the analysis about the design and the construction information. Through the new anti-floating anchor and new reinforced concrete slab, the whole anti-uplift and partial anti-uplift of underground parts of the floating structure are strengthened. The frame columns and beams with cracking damage caused by the up-floating accident are strengthened with enlarging section method and the enclosure steel method.

Peroxynitrite can be highly efficient catalyzed to harmless products with a turnover frequency 34.5 s-1by micromolar concentration of water-soluble iron porphyrin, 5, 10, 15, 20-tetrakis-(4-carboxyphenyl)-porphyrin-Fe(III)-chloride (T(p-COOH)PPFe(III)Cl). Then we used spectroscopic and kinetic to study its decomposition mechanism and rate in bionic environment (25 mM sodium bicarbonate). The data reveal that this catalytic reaction is a recyclable reaction. Peroxynitrite is decomposed to nitrate (NO3-) and nitrite (NO2-) through forming [oxoFe(IV)]+intermediate. Moreover, the [oxoFe(IV)]+intermediate is reduced back to the starting porphyrin. It is noted that the oxidized iron porphyrin can be reduced by the reducing agent in the solution. In addition, we also find the catalytic rate constant is higher in the presence of sodium bicarbonate than the absence of sodium bicarbonate. They are 1.26×106M-1s-1and 1.17×106M-1s-1, respectively.

The module partition of NC spiral bevel gear machine tools is researched in detail in this paper. The module partition method we used is based on the function analysis. First we establish the black-box model of machine tools, and then further broke down into the function structure chart, and then machine tool is divided into modules based on the chart. Finally, an evaluation module of reasonable degree of module partition is proposed by introducing the concept of information entropy.