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The ability to accurately and efficiently detect the contents and constituents of petroleum pollutants is important for environment of our ecological system. The fluorescence spectrum technology is applied to petroleum pollutants with high precision. A new type of portable petroleum pollutants fluorescence spectrum detection system based on multichannel sample cells and its optical structure is proposed...
Because of the Kyoto protocol and the limitation of natural resources, the renewable energies are being concerned. This paper investigates the generation expansion planning for a small standalone power system (e.g., 150 kW). This paper considers 25 kW wind-turbine-generator, 5 kW HCPV and 20 kW diesel generator. The reliability is considered for a period of 5 years to study the generation expansion...
Based on electrical and chemical analysis in oils of some fault transformers in Shenzhen, it indicates that the corrosive sulfur contained in insulating oils may cause faults. Corrosive sulfur would react to copper wire and engender Cu2S during the operation of transformer. Because of the electric characteristic of Cu2S, this substance will penetrate and pollute insulating paper of the wire, and then...
The paper associates fractal dimension with the image disorder degree, which is introduced into pre-classification for fractal compression coding process together with the concept of quartered-tree coding, then a fractal compression coding approach based on fractal dimension feature blocks is brought forward. The algorithm improves coding time, compression ratio, but the peak-peak signal-noise ratio...
To improve the efficiency and the security of tripping operation and lessen the labor intensity during the drilling operation, the concept of using computer to assist tripping operation was put forward in this paper. It is also very useful to enhance the automation level of the mechanical drilling rig. In this paper, after studying the oil rig equipped with hydraulic disc brake and pneumatic disc...
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