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Liu J.,Henan University of Urban Construction | Dou M.,Hebi Vocational and Technical College | Zhou L.,Henan University of Urban Construction | Xie K.,Henan University of Urban Construction
Advanced Materials Research | Year: 2012

Biomass plays unprecedented role in energy structure, whose study focuses on technology reform, the study on exploring raw material is limited. This paper, taking the usual Bermuda grass as objective, analyzes conditions of cellulose degradation. It comes to the conclusion that reducing sugar gets to 15.99% under conditions as follows: density of hydrochloric acid of 1.0%, ratio of solid and liquid of 1:10, reaction temperature of 120° C and reaction time of 60 minutes. © (2012) Trans Tech Publications, Switzerland.

Zhao S.-P.,Hebi Vocational and Technical College
Applied Mechanics and Materials | Year: 2011

This paper presents a novel pressure sensor based on IL electrofluidic circuit. The simple configuration makes the device capable of being seamlessly integrated to wide varieties of PDMS microfluidic devices. The experimental results demonstrate that IL-filled microfluidic channels can be utilized as electrical resistors to construct functional circuits, and an electrofluidic Wheatstone bridge circuit has been designed to construct the pressure sensor. In the pressure sensor performance characterization, the calibration results show that the gate voltage is linear proportional to the applied pressure with sensitivity of 8.45 mV/psi and the pressure as small as 2.5 psi can be easily detected. © (2011) Trans Tech Publications, Switzerland.

San-Ping Z.,Hebi Vocational and Technical College
Communications in Computer and Information Science | Year: 2011

This paper investigated the effect of design margin relaxation on overall circuit performance metrics such as operating frequency, area and power. From the experimental results, by designing the circuit using relaxed design margin, we can reduce the waste of design resources, and gain some advantages by using deterministic design infrastructure which is widely used in modern circuit design. In addition to these, if we apply post-silicon optimization to compensate the yield loss generated by design margin relaxation, the yield of the circuit can be raised to the target timing yield with area and power benefit. © 2011 Springer-Verlag.

San-Ping Z.,Hebi Vocational and Technical College
Communications in Computer and Information Science | Year: 2011

In this paper, a low power, high linearity and high gain front-end circuit with novel LNA in 0.18μm CMOS technology for 5.2 GHz wireless applications is proposed. By employing current-bleeding and current-enhanced techniques, the conversion gain and the linearity can be increased and the power consumption is reduced. The complementary common-gate LNA is adopted to reduce noise and to improve linearity. With the LO power of 0 dBm, the proposed front-end circuit has conversion gain of 18.4 dB, input 1-dB compression point of -16 dBm and IIP3 of -6 dBm, while it consumes only 9.4mW. The chip size including pads is 0.767mm × 0.96mm. © 2011 Springer-Verlag.

Ke F.-S.,Fudan University | Fu X.-Y.,Fudan University | Duan G.-Y.,Hebi Vocational and Technical College | Wu S.,Fudan University | And 3 more authors.
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | Year: 2011

The crystal structure, electronic and optical properties of Cr, O and CrO codoped GaN were calculated by first-principle calculation. The results show that codoping method brings in new intermediate band as well as lowering the formation energy in comparison with single oxygen atom doping. The formation of intermediate band enhances absorption of low energy photons, especially in infrared range of the sun spectrum. Our calculation predicts the feasibility of CrO codoped GaN used as a third-generation solar cell semiconductor material.

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