Advanced Materials Research Vol. 529

Abstract: Using the impact crusher vertical shaft rotor rotating speed, the vertical shaft impact crusher work the impact of the speed and impact, can improve the crusher of broken ability and production efficiency. The vertical shaft impact crusher the materials in the parts of the impact of the crusher collision effect, can effectively reduce the wear and tear of the machine.

Abstract: Since the theory of one-dimensional plane wave can not accurately predict the internal sound field of the complex structure muffler. The three-dimensional finite element method is adopted to establish the acoustic model of the composite muffler based on the application of composite muffler model. Transmission loss and characteristics of internal sound field of the composite muffler's are calculated through acoustic vibration software Sysnoise. The calculation shows that the muffler under the interference of fluid flow has the higher transmission loss compared with the absence of liquidity function with an additional silencer band. The analysis method and conclusions provide a basis for the design of composite muffler.

Abstract: This paper studies the perturbations of strictly contact diffeomorphisms in contact dynamical system. By constructing new lifting methods for contact system and using some perturbation techniques in Hamiltonian mechanics, this paper proves that there exists an arbitrary small perturbations such that the corresponding function of the strictly contact isotopy does not equal to a constant at any time.

Abstract: To solve the difficult problem of human ear recognition caused by variety of ear angle, a novel method which combines hybrid filter with supervised locality preserving projection (SLPP) is proposed. The ear image is firstly filtered by Log-Gabor filter which is constructed with 5 scales and 8 orientations. The important parameters of Log-Gabor filter are selected through experiments. To form effective and discriminative feature too many Log-Gabor coefficients are reduced by discrete cosine transform. Lastly feature is constructed by SLPP to discovery geometrical rules. Experimental results show that compared with the traditional methods, the proposed method obtains higher recognition rate, and is robust to multi-pose of ear recognition.

Abstract: This paper will provide the basis of summer bra material comfort level design and production. To analyze modal and blending and interweave of other material based on clothing materials, this paper mainly through investing comfort level and wearing experiment in wearing bras of different material in summer, compare the related data of bra comfort level between Modal and other material. It also analyzes the changes of comfort level when modal material blending interweave of other material. And find the conclusion that the modal material is of highest comfort level.

Abstract: In this paper, ARM7 Microcomputer is designed to realize control of the grain storage environment situation. This control system adopts RS-485 bus to transit data, connecting the temperature module and humidity module with the upper computer. And a detailed description of the design of system function modules and the B / S four layer database application program realization. In this way, the system control computer on the field of grain information real-time monitoring, and through the Web server interface and Internet on the client establish a connection, completed the site condition information of remote measurement and control.

Abstract: In order to understand the color fastness to light of the natural fiber materials, different kinds of natural fiber fabrics were tested for comparison. Based on the data obtained from the experiments, a conclusion was drawn that the degree of color fastness to light could be divided into different levels and there were many factors that can affect the color fastness to light, such as fiber materials, dye, color combinations, atmospheric compositions of surroundings, sample moisture content ratio, temperature and so on. This paper carries out the original methods including dyeing and exposing to light and it also provides some guides for the researches on color fastness of the natural fiber materials.

Abstract: This paper, by using German Simi Motion walking motion system, quantitatively describes the parameters and indicators of the human gait characteristics, tracks and captures the characteristics of body movement and motions of articulation points, compares the gait characteristics between different people, conclude significant differences between walking gait characteristics corresponding to different leg heights and knee bending angles through a large number of experiments, and finds out a description of stability and diversity under different human gait characteristics. This study extends the range and ideas of biological personal identification technology research, so as to provide a more scientific description of gait characteristics, so this study sets a basis for personal identification and establishing identity by using gait characteristics.

Abstract: In order to stimulate the movement of small scale helicopters, DOF flight test platform based on the similarity theory has been thought out. Accordingly, considering the platform to be the researching object and combing the Lagrange-Euler equation with the equivalent moment method, the system kinetic model is worked out and the physical parameter is pre-estimated. The relationship between the lift force and the change of the rotation speed is acquired by the experiment with the fixed collective angle. According to the dynamic equation, a PID revised feed-forward controlling algorithm with robust characteristic was devised and the MATLAB simulation is applied to verify fast astringency and validity of the controller

Abstract: Matriptase is a type II transmembrane serine protease highly expressed on the surface of tumor cells and participated in a range of human cancers including those of the breast, cervix, ovaries, prostate, colon and gastrointestinal tract. In this study, we developed a new matriptase detection probe with gold nanoparticles (AuNPs). A fluorescence dye was attached to AuNP surface through the bridge of peptide substrate (GRQSRAC). The fluorescence was quenched due to the fluorescence resonance energy transfer (FRET) between AuNP and the fluorescence dye. The fluorescence recovery properties were confirmed by dithiothreitol in vitro. The result of in vitro cell research indicates that the gold nanoparticle probe is sensitive and specificitive for the detection of matriptase expression in early tumor and has great potential in biomedical application.