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The running status evaluation accuracy using insulating oil dissolved gas analysis is not high in the present oil-filled electrical equipment, and the dispute of using or not using the C3 gases as the characteristic gas, this paper used thermogravimetric analysis to explore the insulating oil thermal cracking characteristics. particularly, the pyrolysis experiment was done using the TGA/SD-TA851 thermogravimetric...
Carbon nanotubes (CNTs) on a glass substrate at a dramatic low temperature was obtained by a radio frequency plasma enhanced thermal chemical vapor deposition. Nickel film was heated and activated at 450°C with 2400 W rf plasma power, the deposition of the CNTs was performed for 60 minutes with 600 W, 1500 W and 2400 W rf plasma power. The diameters of the CNTs obtained are from 8 to 40 nm and the...
With the prosperity of reverse logistics recent years, the cost control of the reverse logistics is to be more and more valued by enterprise's managers. In this paper, the authors firstly analyze the status of reverse logistics nowadays as an explanation why reverse logistics should be valued. Then, through the discussion on the relevant factors resulting in high reverse logistics cost, and the main...
This paper mainly deals with the sensor drift in the application of gas concentration measurement, but little has been done in previous works. The algorithm of detecting the drift of sensors presented in this paper is based on the combination of the principal component analysis (PCA) with the wavelet analysis. By this algorithm the sensor drift can be detected online sensitively. For compensating...
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