Jin X.,Dalian University of Technology |
Jin X.,Chaoyang Teachers College |
Duan F.-H.,Dalian University of Technology
Dalian Ligong Daxue Xuebao/Journal of Dalian University of Technology | Year: 2013
Using the method of comparing with fault tree analysis (FTA), the reliability analysis and safety evaluation method of electro hydrostatic actuator (EHA) is studied based on GO methodology. Analytical procedure and GO drawing are presented in details. Quantitatively EHA system reliability analysis is conducted by GO methodology and FTA method respectively. The results of two kinds of methods above mentioned are compared. It is verified that GO methodology is available and corrective for analysis and evaluation of EHA system reliability.
Luo N.,Central South University |
Luo N.,Chaoyang Teachers College |
Zhang G.-F.,Central South University |
Zhu Y.-G.,Central South University |
Cui M.-M.,Central South University
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | Year: 2012
The separation of rhodochrosite from calcite was studied by solution chemistry calculations, SEM-EDAX, ζ potential measurements and flotation tests in the presence of Ca2+, using Na2CO3 and sodium hexametaphosphate (SHMP) as regulators. The results show that SHMP has good selective inhibition in the pure mineral flotation of rhodochrosite and calcite, while in the flotation separation of mixed mineral, Ca2+ dissolved from calcite during pulp conditioning reacts with Na2CO3 to produce CaCO3 that adsorbs on the rhodochrosite surface. This situation makes the two minerals surface property similar and so it is difficult to achieve the flotation separation of rhodochrosite from calcite. When the method of chemicals addition is changed with SHMP added first, a complexation of Ca2+can be made, which avoids the adsorption of Ca2+ on rhodochrosite surface and prevents rhodochrosite surface property from changing. Then by adding Na2CO3 to adjust solution pH, the flotation separation of hodochrosite from calcite will be achieved finally.
Li Z.F.,Wuxi Institute of Commerce |
Jiang L.Q.,Chaoyang Teachers College
Advanced Materials Research | Year: 2013
A new machine is presented in this paper, which is designed to cold draw helical blade. The new machine has characteristics as conserving time and labor, simple to manufacture, strong adaptability and no energy required. It is suitable especially for making helical blades in small amount when repairing helical conveyor. The principle of work and structure of the helical blade manufacturing device is presented, the calculation of cold draw helical expanded blade is also provided. © (2013) Trans Tech Publications, Switzerland.
Xin D.Z.,Chaoyang Teachers College |
Gao Y.C.,Heilongjiang University
Electronic Engineering and Information Science - Proceedings of the 2015 International Conference on Electronic Engineering and Information Science, ICEEIS 2015 | Year: 2015
Optical limiting response of a molecular metal cluster [(n-Bu)4N]3[MoS4Ag3I4] in DMF solution was investigated using 8-ns and 40-ps laser at 532nm wavelength. It was found that the metal cluster displays strong optical limiting even better than well reported limiter, fullerene C60in toluene. And the picosecond optical limiting is much better than nanosecond optical limiting. The pulse width effect and origin of the optical limiting were discussed using a model based on effective excited state absorption. © 2015 Taylor & Francis Group, London.
Tian B.,Zhengzhou University |
Wei F.,Zhengzhou University |
Shu H.,Zhengzhou University |
Zhang Q.,Yangtze University |
And 2 more authors.
African Journal of Biotechnology | Year: 2011
The β-ketoacyl CoA synthase encoded by fatty acid elongase 1 gene (BnFAE1.1) is a rate-limiting enzyme regulating biosynthesis of erucic acid in rapeseeds (Brassica napus). To develop low level of erucic acid in rapeseeds by intron-spliced hairpin RNA, an inverted repeat unit of a partial BnFAE1.1 gene interrupted by a spliceable intron was cloned into pCAMBIA3301, and a seed-specific (Napin) promoter was used to control the transcription of the transgene. Four transgenic plants harboring a single copy of transgene were generated. Expression of endogenous BnFAE1.1 gene in developing T 3 seeds was significantly reduced. In mature T3 seeds, erucic acid was decreased by 60.8 to 99.1% compared with wild type seeds, and accounted for 0.36 to 15.56% of total fatty acids. The level of eicosenoic acid was also greatly decreased. Furthermore, it resulted in a significant increase in the level of oleic acid, but total fatty acid content in T 3 seeds was the same with that in wild type seeds. In conclusion, the expression of endogenous BnFAE1.1 was efficiently silenced by the designed RNAi silencer, causing a significant down-regulation in the level of erucic acid. Therefore, the RNAi-mediated post-transcriptional silencing of FAE1 gene to reduce oleic acid in rapeseeds was an efficient method to breed some new B. napus lines. © 2011 Academic Journals.