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Sun S.,Heilongjiang East University
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2017

Anti-thunder scheme of wind power generation system is discussed in this paper. Through the research and analysis on the harm of the thunder, division of lightning protection zone and lightning protection measures are put forward, which has a certain practical significance on the design and application of wind power generation system. © 2017 SPIE.

Sun S.,Heilongjiang East University
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2017

In view of the shortcomings and the insufficiency of the existing exhaust device for light vehicle engine pedestal experiment, improvement scheme is proposed to design a suitable multi-type exhaust device for light vehicle engine pedestal experiment, which has flex space and a certain degree of freedom in six directions x, y, z, x, y, z, so the problem of interference during the process of installation can be solved, the cost on research and development and test can be reduced and the development cycle can be shorten and it can also be multi-usage. © 2017 SPIE.

Jiang Z.,Heilongjiang East University | Zhao Z.,Heilongjiang Administration of Surveying
Applied Mechanics and Materials | Year: 2012

Seismic design response spectrum and earthquake action in Chinese new seismic code (GB50011-2010), ASCE/SEI7-05 and Eurcode8 were gathered in this paper. Using base shear force method of each code, the authors computed the horizontal seismic forces of a three-story reinforced concrete frame building under the same conditions. The results show that the three static methods roughly approach, while the different parameters lead to discrepancies in calculated values. © (2012) Trans Tech Publications.

Zhang D.,Harbin Institute of Technology | Zhang D.,Heilongjiang East University | Li W.,Harbin Institute of Technology | Huang X.,Harbin Institute of Technology | And 2 more authors.
Bioresource Technology | Year: 2013

The strain SFA13, isolated from Songhua River, demonstrates ability to convert ammonium to nitrogen under aerobic conditions at low temperature. On the basis of 16S rRNA gene sequence, the strain SFA13 was a species in genera Microbacterium. The isolate showed unusual ability of autotrophic nitrification with the ratio of 0.11mg NH4 +-N/L/h at 5 ° C. Ammonium was consumed by the strain SFA13 with the biodegradation of organic carbon and without nitrite or nitrate accumulation. NO3 --N or NO2 --N was reduced by the strain SFA13. The denitrification ratio was 0.24mgNO3 --N/L/h. Hydroxylamine oxidase, nitrite reductase and nitrate reductase were detectable. The putative nitrogen removal process by the strain SFA13 was as follows: NH4 + → NH2OH → NO2 -→NO3 -, then NO3 -→NO2 -→N2. Biological activated carbon attached with the strain SFA13 could effectively remove ammonium in surface water with the rate of 2.68±0.27-3.16±0.25mgNH4 +-N/L/h at C/N 2-10, temperature 10°C, and DO>5.2mg/L. © 2013 Elsevier Ltd.

Jie W.,Harbin Institute of Technology | Jie W.,Heilongjiang East University | Peng Y.,Harbin Institute of Technology | Peng Y.,Beijing University of Technology | And 2 more authors.
Bioresource Technology | Year: 2014

This study aimed at exploring the potential of volatile fatty acids (VFAs) produced from excess sludge (ES) as a new cost-effective internal carbon source in wastewater treatment processes. The optimal condition for VFA accumulation and the bacterial community structure in the bio-production of VFAs from ES were investigated at different pH conditions. Denaturing gradient gel electrophoresis (DGGE) was performed to characterize the bacterial community structure of ES. The results showed that the optimal pH was 10.0 for VFA production, and acetic and propionic acids were the dominant acid species. Pseudomonas sp. was identified as the major bacteria capable of utilizing organic carbon at all pHs. Uncultured bacterium (AB658278) adapted well at high pH. Uncultured bacteria (KC633537 and JN596370) were mainly responsible for anaerobic degradation of ES. The study demonstrated the variation of bacterial community structures at pHs and the close correlation with the VFA accumulation. © 2013 Elsevier Ltd.

Xu M.,Harbin Institute of Technology | Qu J.,Harbin Institute of Technology | Zhang H.,Heilongjiang East University
Applied Mechanics and Materials | Year: 2012

A small vertical axis wind turbine with wind speed self-adapting was designed. The diameter and height of the turbine were both 0.7m. It featured that the blades were composed of movable and fixed blades, and the opening and closing of the movable blades realized the wind speed self-adapting. Aerodynamic performance of this new kind turbine was tested in a simple wind tunnel. Then the self-starting and power coefficient of the turbine were studied. The turbine with load could reliably self-start and operate stably even when the wind velocity was only 3.6 m•s-1. When the wind velocity was 8 m•s-1 and the load torque was 0.1Nm, the movable blades no longer opened and the wind turbine realized the conversion from drag mode to lift mode. With the increase of wind speed, the maximum power coefficient of the turbine also improves gradually. Under 8 m•s-1 wind speed, the maximum power coefficient of the turbine reaches to 12.26%. The experimental results showed that the new turbine not only improved the self-starting ability of the lift-style turbine, but also had a higher power coefficient in low tip speed ratio. © (2012) Trans Tech Publications, Switzerland.

Xiao J.,Liaoning University of Technology | Tang J.H.,Heilongjiang East University
Advanced Materials Research | Year: 2014

Biological nitrification and denitrification via nitrite pathway is technically feasible and economically favorable, especially when wastewater with high ammonium concentrations or low C/N ratios is treated. Therefore, it has attracted more and more attention. It is very important to maintain partial nitrification of ammonium to nitrite. In this paper, the factors that influence operation and efficiency of nitrification and denitrification via nitrite are discussed, including DO concentration, carbon source, aeration pattern, PH, temperature and high free ammonia. High ammonia concentration and temperature are prone to accomplish of short-cut nitrification and denitrification, but limit application in practice. Finally, the review discussed the future challenges for application of short-cut nitrification and denitrification. © (2014) Trans Tech Publications, Switzerland.

Li J.,Heilongjiang East University
Advanced Materials Research | Year: 2013

At present, distresses of national bituminous pavement are mainly rut and crack. Occurrence of these two distresses seriously affects usability and service life of bituminous pavement. The author studied the severity and causes of pavement's rut distress and crack distress combining with investigation of a highway. Corresponding treatment measures were also proposed aiming at pavement distress characteristics. Determined fiber patching material had good effect on the improvement of bituminous mixture high temperature stability through indoor test and entity paving of pavement, and gave priority to it as pavement patching material. © (2013) Trans Tech Publications, Switzerland.

A material of nitrogen, carbon-codoped TiO 2 (HITNC-1) with an unusual optical property in the near-infrared region is prepared at 800°C in NH 3 and CO 2 atmosphere. TEM results show semiconductor nanocrystals with grain size approximately in the range of 2∼8 nm. HITNC-1 exhibits two strong absorption bands in near-infrared region, which is relative with the F-type color centers produced by the behaviors of Ti 3+ trapping electrons and lies on the doping of N,C atoms into TiO 2 lattices. The results of the surface photovoltage spectrum indicate that the intensity of positive photovoltage signal is 20 times than raw TiO 2, and emerges a new signal in NIR region. The transient photovoltage results provide the investigation of dynamic behavior of photo-induced charge carriers in HITNC-1. Therefore, the photoelectrochemical properties clearly demonstrate that N,C-codoped TiO 2 at high temperature could induce the separation of e - and h + and harvest photons for optical property. © 2012 IEEE.

Hu J.,Heilongjiang East University
Advanced Materials Research | Year: 2012

This paper first studied aluminum alloy honeycomb sandwich panel in out- plane static compress test.Through analyzing deformation characteristics, the loads-displacement relationship was obtained and are described by the average stress-strain curve. Secondly, using the Split Hopkinson Pressure Bar device of impact test, deformation behaviour, dynamic average stress-strain curve data and so on were got under different loading rates, thus learned impact dynamics characteristics of that. © (2012) Trans Tech Publications, Switzerland.

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