Semiconductor photocatalysts have recently received great interests owing to their wide applications in environmental purification, solar energy conversion, and water splitting. However, enhancing the photocatalytic efficiency of TiO2 to meet the practical application requirements is still a challenge...

A novel microporous ZnO/TiO2 heterostructure, which consists of crystalline TiO2 decorated with amorphous ZnO, have been fabricated by a facile one-step synthetic methods. The results showed that the phase composition of the growing units and the intrinsic crystal structure are seriously controlled by...

According to the widespread problem of Mechanical and electronic enterprise that the types of knowledge is various, the management and application of knowledge is difficult. Put forward a kind of knowledge management method and tool system supporting for the whole process of mechanical and electrical...

Objective:The three-dimensional reconstruction method based on vision uses the digital camera as the image sensor. Establishing the model of a dynamic measured object is the premise of the vision precise measuring system. Methods: By using the pinhole camera model and the mathematical modeling method,...

Shaking happens to the traffic surveillance video inevitably, which can lead to the degradation of monitor system performance. A hierarchical gray project the correlation algorithm (HGPC) is proposed to solve the problem of the shaking in the traffic surveillance video. First, global hierarchical gray...

to discover the associational knowledge between the structure and sustainable design features in sustainable design, a new method, namely, discovering knowledge based on patents, was proposed. It extracts the features of parts in the patent claims, analyzes the objective functions and the sustainable...

A micro-perforated panel absorbers (MPPs) is one of the most promising alternatives among the various types of the next-generation sound absorbers. However, the low frequency noise is difficult to tackle using the general MPPs. According to the high absorption performance of the combination of the membrane...

A noise investigated in this study is the pulsation noise generated from compressor wheels, whose frequency is the same as the whine noise. Although they have the same frequency, their noise sources are absolutely different. The whine noise is induced from the unbalance of rotating modules, on the other...

School-enterprise cooperation has been studied for many years, but for most colleges and universities, School-enterprise cooperation in depth and breadth is far from enough. The paper analyzes the problems and reasons in school-enterprise cooperation, and raises a solution to build the Interactive platform...

According to the genotyping method of Newcastle disease virus (NDV), a web-based genotyping system is developed by using Java Server Pages (JSP) technology and MySQL server database technology. Users input the sequence file in FASTA or GenBank format, or pasted either the nucleotide or amino acid sequences...

SMA490BW is used specifically for the manufacture of welded frame of high-speed EMU bogies. Bogie is one of a very important bearer units and transmission units during driving while bogie frame is one of the most important bearer units and transmission units in bogie, directly related to safety during...

Ultrasonic guided waves in pipes have been used as a powerful and effective tool for long-range inspection of pipes as they have the potential of propagating long distances with little attenuation. The propagation phenomena of guided waves in straight pipes have been investigated by many researchers;...

In the chromatic measuring system, a kind of optical fiber probe was added to collect the light to decrease the interference to the reflected light from the object. But the probe brings the distortion to the system in the chromatic measurement. This paper put forward a method based on the Fourier Transform...

In order to detect the skin’s disease with the spectral instrument, the reflection spectrum should be gotten to calculate the chromatic values and be analyzed compared. In this paper a kind of chromatic system with self-made fiber probe was designed to measure the spectrum to distinguish the skin normal...

Business management is an important part of enterprise management. Information management system is an important means to realize the modernization of management, goods. The current problems, the construction of business management information system, the design of database, database management system...

Measuring signal in gearbox fault diagnosis low signal-to-noise ratio, high frequency of characteristic signal and noise reduction was difficult. And general gear fault diagnosis method was hard to solve the space-time registration problem of multiple source information. So probability box theory and...

The simply multi-segment averages of mechanical fault features lead to the loss of signal uncertainty probability statistics which may contribute to fault diagnosis. To solve the problem, a probability box modeling method of mechanical fault features is proposed. Three similar dimensionless factors (peak...

Known the health state of each mechanical part in advance is particularly important in mechanical equipment conditional monitoring. However, it is one of the most difficulties to be solved in mechanical equipment conditional monitoring. A new probability boxes theory research Strategy for the mechanical...

In this thesis, a BP neural network model is used to recognize the face direction, which established by simulating the human brain. The recognition model designed includes image compression, image sampling, input vector standardization, BP neural network and competition selection. Experimental results...

This paper defines the normalization efficiency function, the efficiency similarity of different variable-speed fans, and the efficiency similarity fan station. We propose a efficiency optimization method for such fan stations. Based on the efficiency function characteristics which can be approximately...

Red mud or bauxite residue is a waste or by-product produced from the alumina industry. With the rapid development of alumina industry, the comprehensive utilization of red mud has not been resolved for a long time ,it seriously polluted the environment and led to a waste of resources.In the present...

Fly ash red mud occupied a great quantity of soils and polluted water source because of it has a very high sodium content. In the present work, the magnesium salts were used to remove sodium from fly ash red mud. The Mg2+ replaced Na+ from the compounds in the fly ash red mud and then the new created...

Using the welding assembly finite element software, PAM-ASSEMBLY, we performed a dynamic simulation of Q345D low alloy high strength steel deformation under different welding sequences. A post processing module was used to gain welding deformation nephograms at different times under different welding...

In order to accomplish the real-time transfer of mechanism configuration during moving process, a new kinematic pair, named as additional constraint kinematic pair, is proposed. Being different from the traditional kinematic pair this new kinematic pair can supply varying constraint number under certain...