Advanced Materials Research Vols. 230-232

Abstract: The optimal conditions of production of biopolymer by the culture of Bacillus cereus B-11 were examined, using molasses wastewater to replace glucose as carbon source and energy source in the culture medium. Results showed that the COD concentration in molasses wastewater favorable for the production of the biopolymer was 5000 mg•L^-1, and inoculum size of 5%(v/v), 28^◦C, initial pH 7.0 and shaking speed of 150 r•min^-1, under the optimal culture conditions, the highest flocculating activity achieved for Kaolin suspension was 98.5% and 3.55 g biopolymer /L broth was obtained. The biopolymer was effective in flocculating some soluble reactive dyes in aqueous solution, reactive Light-Yellow K-4G and reactive Turquoise Blue KN-G with a decolorization efficiency of 97.5 and 94.7%, respectively,using 25 mL of the flocculant in 500 mL of 100 mg•L^-1 dye solution.

Abstract: Small gas turbine engines have been considered as a potential and popular mean of propulsion for Unmanned Aerial Vehicles (UAV). With the advantage of high thrust/power-to-weight-ratio from these engines, small aircraft can have larger payload allowance and higher altitude capability. However, at present, these gas turbine engines are not mature enough to perform critical mission for UAV. To be used for such critical mission, these gas turbine engines need a better reliability, efficiency and endurance. The capability of the engine to work efficiently in conditions at different altitude with the variant of air density is a critical factor related to higher operational ceiling. Hence this work aims to present a Computational Fluid Dynamics (CFD) simulation approach focusing on centrifugal compressors which are applied to turbo machines. A computational method is developed for studying the performance of small gas turbine engines over a range of altitude and ambient temperatures under different engine rates, and a centrifugal compressor simulation model is generated by using CFD techniques. Through numerical solutions obtained for different mesh sets the finest mesh of the model was determined. The performance curves obtained by the CFD simulation has been compared with the results obtained from the analytical method.

Abstract: Batch experiments were carried out to determine the capacity of Bacillus cereus biomass to adsorb Sr(II) ions from aqueous solution with respect to pH, initial Sr(II) concentration, contact time and biomass dose. The experimental data were modeled by Langmuir and Freundlich isotherm models. Langmuir model resulted in the best fit of the adsorption data. The maximum adsorption capacity for Sr(II) was 78.34 mg/g. The best correlation was provided by the second-order kinetic model, implying that chemical sorption was the rate-limiting step. The practical implication of this study is the development of an effective and economic technology for Sr(II) removal from contaminated waters.

Abstract: In this paper,the artificial intelligence control technology is used in sewage treatment plants, we use fuzzy control method in the sewage treatment process, we use the dynamic fuzzy control in the water quality of the sewage treatment process parameters , on this basis, we completed the automatic control system software design, the upper control software we use the WinCC configuration ,the next bit control softwarewe use the STEP7 5.1. We use the object-oriented programming idea to improve the efficiency of automatic control software. We developed the application communication protocol between the upper and lower computer layer, the next crew and the host computer can run independently when they are not connected,when the communication connects again, you can pass the parameters of the system from each other to avoid the loss of valid data. The central control system monitors the plant process and equipment operation all the time, the remote control substitutes for the original analog console, it is important simulation parameters to trend display, allowing the operator to better control water quality.

Abstract: While Grid performance models become increasingly popular and many performance service start to offer all kinds of Grid performance, the Standard of performance for Grid performance has become an important factor for performance users to consider the process of suitable Grid performance.In this paper, we present an Corresponding architecture (Microsystem-Standard) for Standard-required Grid performance. A new architecture is proposed to better support performance such that user can select suitable Grid performance based on their Standard requirements, reliability of Grid performance, and effect of network connection and configuration between performance user and service.

Abstract: In Table Tennis match information processing, Match Information needs processing through Web service, The corresponding concepts need to be published and shared by the semantic web, the Web Service description language (WSDL) has become a XML recommendation to publish and share concepts on the semantic web. In order to derive hidden information of Table Tennis information concept. In this paper, we propose an reinforced method of optimizing the Table Tennis information process of concept reasoning. Our work focuses on one key aspects: we describe classical methods for Table Tennis information concepts category. it is important to ensure that the category process uses the smallest number of tests. Therefore, we consider reinforced method and evaluate their effect on four different types of test concept.

Abstract: A porous carbon has been prepared by template method using a natural clay mineral as template and furfuralcohol as carbon source. X-ray diffraction (XRD), nitrogen adsorption and scanning electric microscope (SEM) are used to investigate the composition, structure of pore and micro morphology of the samples. XRD analysis indicates that the templated carbon is amorphous. Nitrogen adsorption analysis indicates that the carbon is a microporous and mesoporous material. The specific surface area of the carbon is 302m²/g, and the external surface area is 158m²/g. The mesoporosity of the carbon is as high as 58.7%. SEM investigation indicates that the carbon has a squamiform shape.

Abstract: The temperature increment process was measured on test rig for disk brake of some car. And the changing model of disk brake was built using Boltzmann equation. Orthogonal experimental with two factors and three levels were conducted. And the results were analyzed based on quadratic regression method to get parameters of equation. The model can be used in temperature prediction.

Abstract: Based on Doppler and Fourier optics analysis method, analyzed the configuration of double diffraction grating, and built its non-contact optical measurement mathematic model. And built double diffraction grating interference displacement measurement system, the design of double diffraction light path can compensate the deflection angle of grating moving, greatly improved tolerance of grating’s deflection. The compact and micro configuration of its light path, shorten optical distance, improving system’s environment anti-interference ability. Experimental resulting show, within 20nm displacement measurement, and<50mm/sec measurement speed, the system resolution is 1nm and measurement precision is less than 30nm.

Abstract: High speed machining is one of the advanced manufacturing technologies which have developed quickly in recent years. Tool technology is key factor which will make influence to the efficiency and precision of HSM. The paper has analysis the HSM tool technology in terms of material, shank structure and tool balance. It brings forward that tool material with high property must match with workpiece to get high efficiency and precision in HSM. Three type of shank are introduced and using HSK can get better working performance due to its double-surface positioning and short tapered shank. The paper finally put forward the online balancing test technology which can achieves the actual signal collection of dynamic balance, and make technical analysis as well as processing in high-speed cutting.