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2011 1

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Two-phase sinusoidal 1

UniFed sequencing batch reactor (SBR) 1

accumulative 1

alternation of anoxic-aerobic (A/O) 1

bi-direction 1

biochar 1

climate change 1

domestic wastewater 1

energy alternation 1

miss-step 1

phosphorus removal 1

positioning 1

volumetric exchange ratio (VER) 1

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Bi-modes alternation stepping ultrasonic motors

JIN Jiamei, ZHAO Chunsheng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 101-105 doi: 10.1007/s11465-008-0018-1

Abstract: Based on the principle of alternative operation of two bending vibration modes in an annular stator, this paper presents a standing-wave stepping ultrasonic motor characterized by no accumulative errors driven by an open-loop control circuitry. The driving forces are generated from the motions of projections on the stator in two modes. The positioning of the motor is achieved by the cooperation between the stator projections and rotor teeth, and the number of the rotors determines the stepping angle of the motor. Two-phase sinusoidal signals corresponding to the two modal frequencies drive the motor bi-direction stepping rotation via a switch unit. The prototype runs steadily without miss-step on trial. The single-step angle displacement of the motor is 2.5°.

Keywords: miss-step     bi-direction     Two-phase sinusoidal     positioning     accumulative    

Researches on biochar application technology

Chen Wenfu,Zhang Weiming,Meng Jun,Xu Zhengjin

Strategic Study of CAE 2011, Volume 13, Issue 2,   Pages 83-89

Abstract:

Comprehensive analysis and commentary were conducted on biochar research history, present situation, the existing questions and the industrialization prospect in this article which especially expounds the application value and vital role of biochar in energy, environment, agriculture and other areas. We considered that biochar is of important application value and practical significance in combating climate and environment change, carbon sequestration and mitigation, ensuring energy and food security. Then, directions of biochar research, constructive advices, technology approach of industrialization development and application were proposed on the basis of agricultural and forestry residue resource utilization, to provide references to promote biochar engineering technology innovation and industrialization development.

Keywords: biochar     climate change     energy alternation    

Optimization of phosphorus removal in uniFed SBR system for domestic wastewater treatment

Xuguang TANG, Shuying WANG, Yongzhen PENG

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 4,   Pages 475-481 doi: 10.1007/s11783-010-0244-8

Abstract: In the mode of alternation of anoxic-aerobic (A/O) condition, phosphorous removal efficiency increased

Keywords: UniFed sequencing batch reactor (SBR)     phosphorus removal     volumetric exchange ratio (VER)     alternation    

Title Author Date Type Operation

Bi-modes alternation stepping ultrasonic motors

JIN Jiamei, ZHAO Chunsheng

Journal Article

Researches on biochar application technology

Chen Wenfu,Zhang Weiming,Meng Jun,Xu Zhengjin

Journal Article

Optimization of phosphorus removal in uniFed SBR system for domestic wastewater treatment

Xuguang TANG, Shuying WANG, Yongzhen PENG

Journal Article