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Application of Low Pressure Plasma Technology in the Field of Environmental Protection
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作者 孙亚兵 李敏 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第2期187-194,共8页
The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma trea... The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma treatment technology for the environmental contaminantswas synthetically studied, and the reaction processing and mechanism between the low-pressureplasma and the environmental contaminants were theoretically analyzed. At last, the prospectsand existing problems on the application of low-pressure plasma in the field of environmentalprotection were discussed. 展开更多
关键词 SPM Application of Low Pressure Plasma technology in the field of Environmental Protection
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Comparison of Temperature Field Distribution between Cement Preclinkering Technology and Cement Precalcining Technology
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作者 徐迅 WANG Lan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第2期355-360,共6页
Through the comparison of calcination conditions between cement preclinkering technology and cement precalcining technology,we studied the characteristics of temperature field distribution of cement preclinkering tech... Through the comparison of calcination conditions between cement preclinkering technology and cement precalcining technology,we studied the characteristics of temperature field distribution of cement preclinkering technology systems including cyclone preheater,preclinkering furnace,and rotary kiln.We used numericalsimulation method to obtain data of temperature field distribution.Some results are found by system study.The ratio of tailcoalof cement preclinkering technology is about 70%,and raw mealtemperature can reach 1070 ℃.Shorter L/D kiln type of preclinkering technology can obtain more stable calcining zone temperature.The highest solid temperature of cement preclinkering technology is higher than 80 ℃,and high temperature region(〉1450 ℃)length is 2 times,which is beneficialfor calcining clinker and higher clinker quality.So cement preclinkering technology can obtain more performance temperature filed,which improves both the solid-phase reaction and liquid-phase reaction. 展开更多
关键词 cement preclinkering technology temperature field distribution kiln production heat balance solve the equation
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Daqing Oil Field Adopts New Technology
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《China Today》 1997年第12期12-14,共3页
关键词 In Daqing Oil field Adopts New technology
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The breakdown mechanism of a high-side pLDMOS based on a thin-layer silicon-on-insulator structure
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作者 赵远远 乔明 +2 位作者 王伟宾 王猛 张波 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第1期524-528,共5页
A high-side thin-layer silicon-on-insulator (SOI) pLDMOS is proposed, adopting field implant (FI) and multiple field plate (MFP) technologies. The breakdown mechanisms of back gate (BG) turn-on, surface channe... A high-side thin-layer silicon-on-insulator (SOI) pLDMOS is proposed, adopting field implant (FI) and multiple field plate (MFP) technologies. The breakdown mechanisms of back gate (BG) turn-on, surface channel punch-through, and vertical and lateral avalanche breakdown are investigated by setting up analytical models, simulating related parameters and verifying experimentally. The device structure is optimized based on the above research. The shallow junction achieved through FI technology attenuates the BG effect, the optimized channel length eliminates the surface channel punch-through, the advised thickness of the buried oxide dispels the vertical avalanche breakdown, and the MFP technology avoids premature lateral avalanche breakdown by modulating the electric field distribution. Finally, for the first time, a 300 V high-side pLDMOS is experimentally realized on a 1.5 μm thick thin-layer SOI. 展开更多
关键词 field implant technology back gate punch-through surface channel punch-through avalanche breakdown
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Deployable Antenna with Compact Ortho-mode Transducer and Feeding Systems
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作者 王宏建 刘和光 +3 位作者 张德海 易敏 刘广 陈雪 《Defence Technology(防务技术)》 SCIE EI CAS 2011年第1期47-51,共5页
The compact ortho-mode transducer (OMT) and compact conical corrugated horn(CCCH) are used as feeding system of the deployable dual polarizing antenna in this paper.A new stricture of double-septum in main wave guide ... The compact ortho-mode transducer (OMT) and compact conical corrugated horn(CCCH) are used as feeding system of the deployable dual polarizing antenna in this paper.A new stricture of double-septum in main wave guide OMT is proposed. The finite difference method in time domain (FDTD) in combination with genetic algorithms(GAs) is used to analysis and optimize this new OMT. The experiment results show that the voltage standing wave ratio (VSWR) of this OMT and feeding system is less than 1.17 in bandwidth; the isolation between the ortho-mode ports is less than -40dB; the cross-polar level of the feed can reach -35dB and the length of the main waveguide can be reduced 50% at least. 展开更多
关键词 electromagnetic field and microwave technology ortho-mode transducer compact conical corrugated horn deployable antenna
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