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Online since: October 2013
Authors: Zhao Wang Xia, Yuan Yuan Fang
This fully reflects the dominant position of students and teachers in the leading role, to give students a good learning environment for the training of its practical application the ability to create favorable conditions; classroom major operations, arranged a big job, such as "Please describe the current yacht main noise source, and try to discuss the measures taken against vibration and noise reduction ", both to deepen the students' understanding of the curriculum, but also as part of the assessment.
Experimental evaluation of students not only depend on results, but also pay attention to science experiments and students of the experimental data and the results of the analysis.
Experimental evaluation of students not only depend on results, but also pay attention to science experiments and students of the experimental data and the results of the analysis.
Online since: June 2014
Authors: Xin Zheng, Xiao Lian Zhang, Wei Hua Zhu, Hong Xia Liu
Generally, the main impurities in zirconium powder which made by metal calcium thermal reduction is calcium, the emission line of calcium is 317.933 nm, while detecting the elements of different emission signal values has less effects by using plasma atomic emission spectrometer[8].
Conclusions The method by using ICP-AES is simple and more intuitive, accurate, and the operation is simple, the data is more intuitive, also shortens the time of testing and further ensure the accuracy of analysis results than the traditional method of testing zirconium content through impure content.
Conclusions The method by using ICP-AES is simple and more intuitive, accurate, and the operation is simple, the data is more intuitive, also shortens the time of testing and further ensure the accuracy of analysis results than the traditional method of testing zirconium content through impure content.
Online since: June 2010
Authors: Yurij Zimin, Joanna Pawłat, Xue Feng Li, Takahiro Matsuo, Tadashi Sugiyama, Toshitsugu Ueda
Proposed
device allowed reduction of the total size of the setup (portability) and the necessary minimum
volume of gas sample even to 0.01 cc.
The simulations of absorption peaks for the methane gas were performed using HITRAN [27] software and data were compared to Pacific Northwest National Laboratory database [28].
The simulations of absorption peaks for the methane gas were performed using HITRAN [27] software and data were compared to Pacific Northwest National Laboratory database [28].
Online since: March 2004
Authors: Hoon Sang Choi, Hyun Joo Sung, Seung Gun Seo, Yu Min Jang, Chang Sik Son, In Hoon Choi
The damage to the ferroelectric properties caused by the
impregnation of hydrogen would be due to pinning of the domains, which is pinned by the lack of
oxygen derived from the inside of the film by a strong reduction ambient of hydrogen treatment
process [5].
Fig. 2 XPS data of Bi element at interface of Pt top electrode and SBT thin films: (a) before and (b) after annealing at 300 � in 5 % H2 ambient for 10 min.
Fig. 2 XPS data of Bi element at interface of Pt top electrode and SBT thin films: (a) before and (b) after annealing at 300 � in 5 % H2 ambient for 10 min.
Online since: January 2014
Authors: Wen Ping Liu, Chao Cheng, Zhan Li, Wen Fei Peng, Bao Shou Sun, Xue Dao Shu
With the forming angle, each half circle reduction and axial force increase, and metal axial flows more easily.
Research on experimental data analysis and process parameters of CWR center defects [J].
Research on experimental data analysis and process parameters of CWR center defects [J].
Online since: February 2015
Authors: Yi Ping Chen, Dong Hai Cheng, Qi Fan
Introduction
With the development of the aerospace industry, weight reduction and comprehensive performance requirements for materials are strongly demanded.
After welding,the metallographic specimens were cross-sectioned through the centre of welded joint, then polished and etched in a solution of 1%HF +1.5%HCL + 2.5%HNO3,and the microstructures were observed by light optical microscope (LOM).The welded parts were subjected to tensile-shear loads with the head speed of 1 mm/min to determine the tensile-shear force in a universal testing machine ,the final figure is an average of the three sets of data under the same welding parameters.
After welding,the metallographic specimens were cross-sectioned through the centre of welded joint, then polished and etched in a solution of 1%HF +1.5%HCL + 2.5%HNO3,and the microstructures were observed by light optical microscope (LOM).The welded parts were subjected to tensile-shear loads with the head speed of 1 mm/min to determine the tensile-shear force in a universal testing machine ,the final figure is an average of the three sets of data under the same welding parameters.
Online since: July 2015
Authors: Jing Hu, Ming Liu, Wei Li
Planetary gear transfer function equation:
(8)
In the equation:
reduction’s ratio.
Table 1 Significant parameters denomination data unit 1 given position () 200 r 3 given speed () 450 r/min 4 Position sensor gain() 1 r 5 Speed sensor gain() 0.0955 vs/rad 5 servo valve electric current (I) 40 mA 6 servo valve electric frequency (wn) 125 Hz 7 servo valve electric damping 0.65 \ 8 servo valve electric flow( Qmax) Qmax L/min 9 servo valve pressure( dp) 10 MPa 10 Motor displacement (Dm) D1 cc/rev B .
Table 1 Significant parameters denomination data unit 1 given position () 200 r 3 given speed () 450 r/min 4 Position sensor gain() 1 r 5 Speed sensor gain() 0.0955 vs/rad 5 servo valve electric current (I) 40 mA 6 servo valve electric frequency (wn) 125 Hz 7 servo valve electric damping 0.65 \ 8 servo valve electric flow( Qmax) Qmax L/min 9 servo valve pressure( dp) 10 MPa 10 Motor displacement (Dm) D1 cc/rev B .
Online since: September 2007
Authors: Lin Jiang Wang, Da Qing Wu, Xiang Li Xie
Kaolinite organic intercalation compound was
also used as starting material to synthesize non- oxide ceramics by carbothermal reduction and
nitridation processing [3].
The data show that the hydrogen bonds between the inner surface hydroxyl groups and the adjacent siloxane layer were broken and that the formamide molecule was hydrogen bonded to the inner surface hydroxyl groups because of the formamide intercalation.
The data show that the hydrogen bonds between the inner surface hydroxyl groups and the adjacent siloxane layer were broken and that the formamide molecule was hydrogen bonded to the inner surface hydroxyl groups because of the formamide intercalation.
Online since: January 2005
Authors: Gan Moog Chow, Rengaswamy Jayaganthan
The driving
force for the surface segregations are reduction in surface free energy, bulk elastic strain energy,
and size effects.
The thermal properties of the segregated surface are then computed by simply averaging over the configurations produced in the simulations and the compositions corresponding to the equilibrium are calculated. 3.0 Surface segregation of Au-Ti nanoparticles The experimental data on surface segregation in Au-Ti nanoparticles have not been reported in the literature to date.
The thermal properties of the segregated surface are then computed by simply averaging over the configurations produced in the simulations and the compositions corresponding to the equilibrium are calculated. 3.0 Surface segregation of Au-Ti nanoparticles The experimental data on surface segregation in Au-Ti nanoparticles have not been reported in the literature to date.
Online since: April 2012
Authors: Antônio Augusto Couto, Danieli A.P. Reis, Carlos de Moura Neto, Gilberto Carvalho Coelho, Nara Miranda Guimarães
Rare thermodynamic data exists to fully formulate these models.
Except for oxygen and aluminum, the other metals provide a reduction on temperature transition, mainly V that can reduce until room temperature if added in sufficient concentration.
Except for oxygen and aluminum, the other metals provide a reduction on temperature transition, mainly V that can reduce until room temperature if added in sufficient concentration.