Advanced Materials Research Vols. 217-218

Abstract: This paper introduces a novel amperometric immunosensor consisting of hemin (Fe(III)-protoporphyrinIX) layers formed by layer-by-layer assembly for determination of clenbuterol (CLB). Layer-by-layer assembly of hemin with Poly(allylamine hydrochloride) (PAH) is achieved on the electrode surface which is modified by single-wall carbon nanotubes (SWCNTs) based on the electrostatic attraction between negatively charged hemin and positively charged Poly(allylamine hydrochl- oride). The modified electrodes were characterized by cyclic voltammetry (CV), scanning electron microscope (SEM), and X-ray photo electron spectrum (XPS). The decrease of current results from the increasing concentration of CLB antigen, which leads to a linear decrease in CLB antigen concentration ranges from 0.5 ~ 10 ng/mL with the detection limit of 0.2 ng/mL (3σ).

Abstract: This paper presents a design method of capacitance micro-displacement sensor, based on the programmable capacitance-digital converter AD7746. AD7746 is controled by Single-Chip Microcomputer which gathers the variation of capacitance from the plates and converts it to the digital quantity.The SCM PIC16F877 connecting with AD7746 through the I²C bus reads the digital quantity converted by AD7746 through software programming, then transmits the data into PC through serial interface,in which the whole high-precision capacitance displacement sensor design is accompished.

Abstract: Based on the background of the continuous development and application extensive of the remote monitoring and diagnosis, we develop a remote fault diagnosis platform,which can be used as remote fault diagnosis service window. The client and the server can be used for data analysis and processing, also on data management to achieve remote monitoring and diagnosis. Meanwhile we design a remote data analysis system in LabVIEW environment to realize the signal analysis and transmission. In order to strengthen the system network measurement function, this paper introduces DataSocket and TCP/IP technology in the remote transmission, which is a new technique in improving the ability of the remote data transmission.

Abstract: Cultural heritage, as a special cultural resource bearing information of human history and, passing on human culture, are not reproducible and movable. Scientifically identifying the scope of its buffer zone is the key to the sustainable development of culture relics. Development and Application of soliton provide us a train of thought for demarcating the buffer zones of cultural heritages. On the basis of soliton theory, isentropic trait, the authors analyze the scientific signification of buffer zones and the methods to demarcate the buffer zones theoretically.

Abstract: For investigating the effect of temperature on the dynamic properties of concrete material, tests for cylindrical concrete specimens at 23°C ~ 800°C were carried out by using Split Hopkinson Pressure Bar (SHPB) apparatus, and the strain rates ranged from 30/s to 220/s. Effects of temperature and strain-rate on the dynamic behavior of concrete were analyzed. The results show that: above 4000C, the dynamic compressive strength of concrete decreases with increasing temperature, and the enhancements of strain-rates on the compressive strength of concrete depend significantly on temperatures. Moreover, both strain-rate and temperature can enhance the peak strain of concrete.

Abstract: Light wood-frame structure, as not only has good seismic performance, but also can give full play to its ligneous advantages such as light mass, high tenacity, energy saving and environment protection, is widely applied to low-rise buildings and villas. The rigidity and ductility of shear wall structured by wood-frame are closely related to its sheathing material and the nail layout. In order to give full play to the carrying capacity of the nailed connection nodes, the article adopts the finite element model to compare the stress distributions of sheathings with different nail spacing, and the carrying capacity of the connection at the point of the sheathing is destructed, and also to provide the reasonable value of nail layout and a reference for the actual structural design.

Abstract: PLECS is used to model the PV H6 inverter connected to grid and good results are obtained. First, several common topologies of PV inverters are introduced. Then the unipolar PWM control strategy is described for PV H6 inverter. Third, PLECS is briefly introduced. Fourth, the modeling of PV H6 inverter is presented with PLECS. Finally, a series of simulations are carried out. The simulation results tell us PLECS is very powerful tool to real power circuits and it is very easy to simulate LCL filter. They have also verified that the unipolar PWM control strategy is feasible to control the PV H6 inverter.

Abstract: With the rapid economic development of Luoyang, more and more people pay attention to the health, which make the leisure sports become a key form of social sports. Nowadays more and more people are fond of leisure sports. The paper analyzed the contents and functions of leisure sports, and discussed the present situation of it. Finally the author gave some good suggestions to leisure sports of Luoyang.

Abstract: The financial pre-warning is an important resource for establish financial policy. Aimed at the character of the power industry, the least squares support vector machine prediction model is given based on the principle of the statistical learning theory and structural risk minimization. The result is given that the forecasting model is effective and offers a new method to forecast the financial risk.

Abstract: Based on the theories of System and Synergy, by analyzing Competition phenomenon and Synergies phenomenon in the development of Competitive Sports to seek the motive mechanism of Competitive Sports. Conclusion: (1) Competition and Synergy between Athletes are the driving forces of the Competitive Sports. (2) Order parameters—-Competitive Sports Theory which can disclaimer system elements are formed in the development process of Competitive Sports. Suggestion: (1) Adjusting system’s external control parameters to promote competition between system elements; (2) Promoting cooperation of athletes and coaches to seek common improvement; (3) promoting the application of the theory of competitive sports and displaying its control functions.