bluuebunny/crossref_metadata_2025 huggingface dataset:
The Device of the Automatic Backflow in Solar Water Heater-Temperature Control and Backflow for Pipe of Water Heater
Authors: Li Bin , Chen Xi , Li Xin Hao , Ma Lu Kuan , Lu Wen Bo , Zhang Wei , Zheng Shu Wen , Bai Zi Wei
Published: October 2013

Now in general use in solar water heater, there is a long pipeline between water heater and tap, we have to empty the stored cold water before we use the hot water; and usually the water cannot meet required temperature due to the heating delay effect, thus the water also should be emptied, which leads to a waste of water resources. In order to solve this water wastage, we propose a device which can help to control the temperature and backflow of the water in water heater. The device accomplishes backflow of cold water automatically under the effect of gravity, and refluxed water will be stored in the recycle-water tank, thus ensuring the result that the water temperature satisfies the requirement. After the recycle-water tank is full, it will trigger the buoy to control the relay switch, then the water pump start to work to force the water into the water heater tank. Thus, realizing the recycling of water. This device can significantly save water resources in domestic water, and it has a broad market prospect.
The Activity of Lipase in H2O/[Bmim]PF6 Microemulsions
Authors: Xie Zong Bo , Jiang Guo Fang , Zhu Chao Yu , Le Zhang Gao
Published: October 2013

Lipase from Candida rugosa (CRL) was used to catalyze the transesterification of vinyl acetate with 2-hydroxymethyl-1,4-benzodioxan in ionic liquid microemulsions (H2O/[BmiPF6, water in 1-butyl-3-methylimidazolium hexafluorophosphate), and the results demonstrated that CRL could preserve higher catalytic activity in H2O/[BmiPF6 microemulsions.
Study on Concentrate Tannin from Gallnut Extract by Membrane Integrated Method
Authors: Ye Qian , Yan Long Long , Xu Mei Lan , Lv Pin , You Li Feng , Wang Wei
Published: October 2013

Gallnut products are widely used in pharmaceutical, chemical, food, printing, aerospace, national defense and microelectronics industries due to their irreplaceable superiorities. In this paper, membrane separation technology was used to concentrate the tannin in the gall extract. Separation efficiency was investigated by different NF and RO membrane model, and the optimized purity of extracted tannin was 98% with yield of 97.5% that achieve the industrial tannin standards. Moreover, the flux capacity of membrane can be restored by corresponding cleaning solution.
Synthesis, Spectral Properties of Di-(2-methyl-8-hydroxyquinoline)Zinc
Authors: Wang Li Hua , Ji Zhi Xiang
Published: October 2013

The complex of di-(2-methyl-8-hydroxyquinoline) zinc (Zn (2-mq)2) was synthesized. The complex was characterized by elemental analysis, 1HNMR, 13CNMR, infrared, UV-vis, XRD and molar conductivity. The zinc (II) ion was found to coordinate to the oxygen atom of phenolic hydroxyl and nitrogen atoms of 2-methyl-8-hydroxyquinoline and the complex conformes to 1:2 metal-to-ligand stoichiometry. The fluorescence properties of the complex in solid and solution were studied. The complex exhibits yellow light under the excitation of UV light. The solvent factors influencing the fluorescent intensity are discussed.
Application of Bleaching Reed Pulp by Xylanase-Producing Alkalophilic Bacillius
Authors: Han Xiao Fang , Hu Hong Qing
Published: October 2013

The reeds are the reeds of the Gramineae Lo bamboo family and they are major non-wood papermaking raw materials. Based on the importance of the reed in the papermaking, many useful discussions have been carried out about its pulping and bleaching processes (Shatalov et al.,2001).Finnish scholars reported a pulp by the xylanase treatment could reduce the segment of chloride to chlorine consumption of 25% for the first time in 1986 (Viikari et al., 1986),and it was soon put into industrial production after then. Xylanase can reduce the amount of chemical additives by improving the bleach ability of the pulp, thereby reducing environmental pollution and reduce production costs, and increase the brightness of the paper (Anatoly et al., 2007).Although many scholars have done a lot of research in biobleaching, and have made some progress, but most of the selection of microorganisms are fungi and neutrophilic bacteria, the production of xylanase is usually in the pH 5 - 7, 40-50°C which often leads to maximal activity, thus lack of compatibility with the conventional chemical pulping process. In recent years, the thermal stability of alkaline xylanase has been paid much attention (Shatalov et al.,2003). Alkalophilic bacteria secreted extracellular enzyme with heat, basophilic characteristics, can be used directly to the biopulping pretreatment and bleaching of wood and non wood raw materials. The recent study on organic solventbased pulping of giant reed showed that competitive papermaking fibres could be produced using this advanced pulping technology (Shatalov and Pereira, 2001). The amount of enzyme not only directly affects the size of pulp hardness, degree of polymerization and brightness, but also was the basis for investigating the economic of dealing with enzyme.The results of alkaline bacteria xylanase bleaching ramie fiber have been reported previously (Zheng et al., 2000). In this study, the xylanase of alkalophilic Bacillus is used in reed pulp bleaching pretreatment, and the physical and chemical properties of the enzyme to deal with the reed pulp are analyzed.
Preparation of Compound Clinoptilolite Filter Material and Performance of Ammonia Nitrogen Removal
Authors: Fan Li Sha , Yu Yan Zhen , Zhao Chun Hui
Published: October 2013

This experiment use natural clinoptilolite powder as main materials to prepare the large specific surface and high porosity spherical compound filter material by adding adhesive and pore-forming agent etc.This compound filter material has favourable effect when treating sanitary wastewater. The static adsorption test showed that the absorption ratio of ammonia-nitrogen is 58.5% when the compound filter material dosage was 100g/L, NH4+-N concentration was 100mg/L and the contact time was 40min.The cure fitting of the adsorption isotherm of NH4+-N on the compound filter material could be well described by the Langmuir formula and R2 (the coefficient of determination) is 0.99216. At the stably running phase, when the average concentrations of influent NH3-N was 35mg/L, the average removal ratio and concentration of effluent NH4+-N reached 83.51% and 5.81mg/L which could meet the first degree of national wastewater discharge standard (GB 8978-1996).
Photochromism Properties of a New Unsymmetrical Diarylethene Bearing a Benzene Unit
Authors: Ren Pan Pan , Wang Ren Jie , Pu Shou Zhi
Published: October 2013

A new photochromic diarylethene compound 1-[(2-methyl-5-(4-trifluoromethyphenyl)-3-thienyl)]-2-{2-methyl-5-[2-(1,3-dioxolane)]-3-thienyl} perfluorocyclopentene 1O was synthesized. Its optoelectronic properties, such as photochromism in solution as well as in poly-methylmethacrylate (PMMA) amorphous films, fluorescences switch were investigated in detail. Upon irradiated UV light it changes from colorless to purple in solution and PMMA amorphous film, respectively. Finally, the diarylethene 1O was exhibited remarkable fluorescence switch properties along with the cyclization reactions. When the concentration arrived at 1 × 10-5 mol L-1, the fluorescence peak had the maximum.
Influence of ssDNA Immobilization on the Conductance of Solution Gated Graphene Transistors
Authors: Song Meng , Ju Cheng , Jia Yun Fang
Published: October 2013

Carboxyl-modified graphene materials in both oxide and reduced state were explored in parallel for the preparation of field-effect transistors (FET). They were solution gated by phosphate buffer solution (PBS) (pH 7.2). Their conductance were examined and compared with unmodified graphene transistors, firstly. Then, after single strand DNA molecules were immobilized on reduced and oxide graphene transistors, their conductance and compared. Here ssDNA molecules were amino-tagged at the terminal five. It was found that ambipolar characteristic was exhibited by reduced graphene transistors, even they were undergone carboxyl modification. And it was also discovered that there were opposite conductance variation with the increasing of ssDNA concentrations and bigger changes were obtained by reduced carboxyl-modified graphene transistors.
Development of a Chemiluminescence ELISA for the Detection of Sudan I in Chilli Powder
Authors: Fan Yan , Zhu Li Xin , Liu Ren Rong , Xu Long , Meng Wei
Published: October 2013

A chemiluminescence enzyme-linked immunosorbent assay (CL-ELISA) was developed for the detection of Sudan I in food products. The CL-ELISA conditions, such as the concentration of antigen, antibody and goat anti-mouse IgG-HRP, were optimized. The optimized CL-ELISA allowed the Sudan I detection in a linear range of 0.625-10 ng mL-1, the IC50 was 3.3ng mL-1 and the limit of detection (LOD) was 0.31 ng mL-1. The method showed good recoveries with spiked chilli powder. The recovery rate in a batch range from 73-109.6%, and the recovery rate between the batch range from 78-109.24%. The proposed method proved to be efficient for the detection of Sudan I in food samples.
The Synthesis and Identification of a Ciprofloxacin Artificial Antigen
Authors: Xu Long , Zhu Li Xin , Liu Ren Rong , Fan Yan , Meng Wei
Published: October 2013

The artificial antigen ciprofloxacin-bovine serum albumin (CPFX-BSA) and ciprofloxacin-ovalbumin (CPFX-OVA) were synthesized by carbodiimide (EDC) method and sodium periodate oxidation method, respectively. These two kinds of antigens were identified by the UV absorption method and the animal immunization test, which showed that they were synthesized successfully. The successful synthesis of ciprofloxacin artificial antigen is important to establish immunoassay of ciprofloxacin.
Environmental Study with the Remote Monitoring Application in Rural Water Source Based on LabVIEW
Authors: Li Meng
Published: October 2013

In order to improve the present situation of rural water source which need artificial control of the spot, decentralized management, design the project of the remote monitoring system based on LabVIEW. Realize device communication of the site through the RS485 bus, and then through a serial port server realize communication of Field devices and upper PC t through wireless LAN. Using NI Modbus user database programming of LabVIEW, implement the remote monitoring and controlling .System prove to be simple, reliable communication by way of practice, can basicly meet the requirements of remote monitoring water source.
Keywords: remote monitoring ;LabVIEW;RS485
A Fuzzy Cluster Algorithm of Heavy Metal City Topsoil Pollution
Authors: Du Jun Jun , Jin Sheng Ping , Li Qiong , Zhang She Sheng
Published: October 2013

Consider heavy metal pollution of topsoil in the city of world today is a hot science research project. A fuzzy clustering algorithm l is constructed ed by analyzing the propagation characteristics of heavy metal pollutants. Considering topography, areas, factories, roads, , irredentist, etc. we calculate a evaluation on comprehensive pollution, and the degree of heavy metals pollution, by using fuzzy clustering and fuzzy AHP. The results show that the index of the comprehensive pollution of heavy metals on the region, and the weight of pollution of each category.
Spectrophotometric Determination of Al(III) in Environment Water with p-Carboxyarsenazo
Authors: Gao Lin , Yan Bo , Chen Fang , Yao Jun Long
Published: October 2013

Spectrophotometry determination of Al (III) with new color reagent p-Carboxyarsenazo(CAA) was reported, and the chromomeric reaction between CAA and Al (III) was studied. In a buffer medium of pH=4.6 HAc-NaAc, CAA reacts with Al (III) to form a red complex and exhibits an absorption maxima at 614nm; Beer,s law is obeyed for 0.10~0.80 μg/mL of Alumium in color solution, the color reaction exhibited high sensitivity (the apparent molar absorptivity obtained is 1.61×104 L/(mol.cm)), and the absorbance fit linear regression equation is A=0.0105+0.561X(μg/mL), the correlation coefficient is 0.9998, the detection limit of the method is 0.36 μg/L. The results obtained by this method in the determination of environment water samples were rapid, accurate and satisfactorily.
Study on a Dynamical Model of Plankton in Lake Environment
Authors: Wang Xi Yun , Cao Shu Yan , Li Dong Guo
Published: October 2013

To study the changes of biomass of plankton and algae in lake environment, a new model was purposed. We applied the methods of qualitative analysis and numerical simulations. The main results were that there was a periodic solution, a globally stable equilibrium in this model under specific conditions, respectively. In conclusion, as increases of rate c, on which plankton are swallowed, there is a static equilibrium, a dynamic equilibrium, and then the equilibrium disappear, and at last the boundary point is globally stable, which means that plankton become extinct.
The Energy Efficiency Analysis of Dye Decoloration by Spraying Discharge Plasma
Authors: Wang Zhan Hua , Xu De Xuan , Zhang Gang
Published: October 2013

This experiment conducts a research on the decoloration of Indigo Carmine dye solution by use of the spraying dielectric barrier discharge coupling corona discharge system to determine the optimum reaction conditions. The purpose of this experiment is to improve the energy efficiency of refractory organics to the utmost.
Research on Xilamuren Desert-Steppe Rainfall Experiment Segmentation Regular Pattern – Based on Rainfall Simulation Experiment
Authors: Zhang Min , Zhang Rui Qiang , Qi Te , Xie Yun Hu , Cheng Cong Cong , Hai Chun Xing
Published: October 2013

The rainfall is the main soil water supply to the soil of desert-steppe. It divides into three parts, evaporation, infiltration and runoff, after falling on to the surface. Those three parts are affected by many factors. Studies of rainfall division in desert-steppe were rare, the proportions of evaporation, infiltration and runoff are uncertain. So Under the condition of different vegetation, we conduct six times rainfall simulation experiment under different rainfall intensity. Simulation shows that rainfall process, the surface coverage and soil condition affect division. The evaporation section of rainfall accounted for 1/2 ~ 2/3. Infiltration section accounted for 30% ~ 50%. Runoff is the smallest. The rainfall intensity plays a decisive role on the runoff. Different vegetation coverage, division proportion is different. The interception and delay function of vegetation main effect evaporation and runoff, it can make the evaporation increased to more than 70%, reduce runoff to a third. Water content of soil profile before rainfall is the main factors affecting infiltration volume. The soil moisture before rain affects the infiltration rate at the beginning of rainfall. If rainfall duration is long enough, infiltration capacity is almost a constant.
Study on Biological Materials with Genetic Diversity of Bupleurum marginatum in Northwest of Hubei Province of China Base on ISSR
Authors: Du Shi Ming , Wang Gang , Liu Yi Mei , Ye Fang , Sun Rong Jin , Liu Ze Gan , Chen Ke Li
Published: October 2013

To analyze the genetic diversity of Bupleurum marginatum growing in northwest area of Hubei province of china,and provide the molecular identification method for Bupleurum marginatum and basis for its exploitation and utilization. ISSR Molecular markers were used to analyse the genetic relationship between Bupleurum species in northwest area of Hubei province (NAHP) and the Bupleurum chinense DC.. 12 samples of Bupleurum marginatum were amplified to 81 ISSR bands and there were 42 polymorphic bands, the rate of polymorphic bands was 51.9%. 12 samples of Bupleurum marginatum were clustered into one group, two samples of Bupleurum chinense DC. were clustered into another group. The biodiversity and germplasm resources of Bupleurum marginatum in NAHP is abundant and it is beneficial for the development of Bupleurum marginatum. The method of ISSR marker can significantly distinguish Bupleurum marginatum from its closely related species as the molecular features of the species identification and provide basis for distinguishing different germplasm.
Biochar from Sewage Sludge: Preparation, Characterization and Ammonia-Phosphorus Capture
Authors: Zhang Lei , Zhang Ji Shi
Published: October 2013

Sewage sludge was pyrolyzed in order to assess the effect of pyrolysis temperature on the yield of biochar production and its characteristics. The pyrolysis temperature was a key factor affecting biochar yield, while the highest yield was obtained at a temperature of 400 °C. Biochar surface area increased with increasing pyrolysis temperature and was maximized (8.4 m2/g),which was beneficial for capturing ammonia and phosphate in aqueous solution. Biochar removed 48.3-82.2% of ammonia at equilibrium time, whereas 35.4 to 69.6% was adsorbed onto biochar surface, implying that biochar is more efficient in removing cations than anions from aqueous solutions.
Study on the Cultivation and Enrichment of Denitrifying Phosphorus Accumulating Organism in Different Patterns
Authors: Mu De Ying
Published: October 2013

With synthetic domestic wastewater, denitrifying phosphorus accumulating organism was enriched and cultured by using activated sludge from a wastewater treatment plant in a set of sequencing batch reactor. Results showed that the system had a good effluent performance under the three-phase cultivation of anaerobic/aerobic, anaerobic/anoxic/aerobic and anaerobic/anoxic; the effluent concentration of chemical oxygen demand (COD) was below 25 mg/L, the average removal rate of phosphorus was 84.63%-88.19%.
Research on Bioinformatics with Sparse Feature Fusion for Object Recognition
Authors: Wu Shu Fang , Zhu Jie , Zhang Zhao Feng
Published: October 2013

Combining multiple bioinformatics such as shape and color is a challenging task in object recognition. Usually, we believe that if more different bioinformatics are considered in object recognition, then we could get better result. Bag-of-words-based image representation is one of the most relevant approaches; many feature fusion methods are based on this model. Sparse coding has attracted a considerable amount of attention in many domains. A novel sparse feature fusion algorithm is proposed to fuse multiple bioinformatics to represent the images. Experimental results show good performance of the proposed algorithm.
Research on Corrosion-Resistant Materials in Seawater with the Design Process and Research of AHTS's Modeling
Authors: Liu Xin Xiong , Huang Cong Mei , Yu Hai Yue , Liu Qing Yun , Li Wen Si , Cao Wen Qi
Published: October 2013

AHTS is generally known as anchor handling towing supply vessels.This essay is going to discuss different styles of AHTSs modeling design with the images it conveys through the analysis of product identifications merits and drawbacks of different parts and the analysis of corrosion-resistant materials in seawater based on several types of AHTS,which aims to present a modified modeling design through a series of research. Keywords: AHTS;different parts;corrosion-resistant materials in seawater;product identification;style;imagery ;design
Study on Crystallization and Rheological Behavior of PEN/PET Blends
Authors: Chuai Cheng Zhi , Li Kai
Published: October 2013

The crystallization and rheological properties of PET were studied by using capillary remoter and plate remoter in the paper. The results showed that the addition of PEN could improve the rheological property of PEN/PET blends and the addition of PC could improve the toughness of PEN/PET blends. Besides, Nucleating agent could accelerate the crystallization rate and form crystal particles with small dense in order to improve the properties of impact resistance, tensile strength and transparency of products.
Research on the Influence of 500kV Power Engineering Materials Line Parameters to EFT/B
Authors: Du Yin Jing , Kang Wei , Liu Jun , Zhang Li Xia
Published: October 2013

In this paper, the influence of 500kV power line engineering materials parameters to EFT/B is discussed. When the 500kV line isolation switch cut off no-load line, arc would generate between the disconnecting switch. This paper mainly discussed the influence that disconnecting time on the electrical fast transient burst. At the time of the current zero-crossing, if the arc gap dielectric strength is less than the arc gap recovery voltage, the arc gap will be broken-down and the arc reignites. This paper analyses the influence on EFT/B caused by different power line engineering materials parameters including the moment of arc reigniting, transformer inductance and capacitance of power line. Through this research we can effectively reduce the disconnecting time by change the power line engineering materials parameters and improve the state of EFT/B.
Research in Non-Isothermal Crystallization Kinetics of LDPE and Inorganic Particle Composite Films
Authors: Shen Hui Ling , Zhou Peng Cheng
Published: October 2013

The low density polyethylene (LDPE)/ethylene-octene copolymer (POE) blend films and LDPE/POE/inorganic particle composite films were prepared. By means of DSC method, the crystallization capability and the non-isothermal crystallization kinetics of LDPE composite films were investigated, the results show that the addition of DE can reduce the interfacial free energy of the crystal and the active energy of a nucleus, resulting in stable nuclei can be formed at lower supercooling, which makes the polymer crystallized successfully at high temperatures. By selecting data processing method of Mo ZS and modified Jeziorny, the results indicate that the DE play a role of heterogeneous nucleation agent in the process of crystallization and increased the crystalline rate of LDPE.
Study of License Plate Recognition Technology
Authors: Yuan Shuai , Zhang Guo Yun , Wu Jian Hui , Guo Long Yuan
Published: October 2013

License plate recognition technology has been widely used with the development of intelligent traffic system, which studies vehicle identification based on digital image processing technology. This paper presents system design and realization of recognition system for license plate. License plate image is preprocessed by gradation and binaryzation at first, then the image noise caused by dirt is filtered by a mean value method. We adopt horizontal and vertical projection method to locate license plate. Character segmentation and recognition are carried out at last. Test result shows that the method presented has good accuracy, quick speed and strong robustness for realtime application.
Novel Initialization Method for Nonlinear Kalman Filters
Authors: Wang Yu Zhe , Su Hang , Cao Yu , Liu Han
Published: October 2013

A novel initialization method for nonlinear Kalman filter was proposed aimed at the defects of the ordinary initialization method. This method was stricter than the ordinary method in theory and could guarantee scientific compare between nonlinear Kalman filters based on Gaussian assumptions. Simulation results showed that the novel method greatly reduced the impact of initialization and reflected more the estimation error due to the type of nonlinear Kalman filters rather than initialization.
Time-Frequency Features of Signal Analysis and its Application in Mechanical Fault Diagnosis
Authors: Luo Zhong Hui , Xiao Qi Jun
Published: October 2013

The early fault detection of mechanical equipment is the technical support of automation equipment to run efficiently. Because of various faults have the characteristics of sudden, transient degeneration, so the traditional Fourier transform based on signal processing method can't meet the needs of the transient signal. This paper discusses time-frequency analysis technology of local wave from signal denoising, signal singularity detection and signal frequency band energy distribution analysis to extract the transient signal characteristics, and the motor bearing fault is put forward as an example, the effectiveness of the proposed method is verified.
Closed Loop Dynamic Fuzzy Neural Network for Real-Time Lifetime Forecasting
Authors: Li Wen Wang , Zheng Gao Feng , Zheng Jian Yi
Published: October 2013

Real-time lifetime forecasting has extensive application in the fields of machine system manufacturing and integration, which is a good way to promote the dependability and operation stability. In this paper, a closed loop adaptive forecasting model with feedback channel of state monitoring information is built up for the real-time lifetime forecasting. The difference of working state between prediction and monitoring information is used to evaluate the prediction performance. The dynamic fuzzy neural network introduced into the prediction model, in which the fuzzy rule, membrane function and structure parameters can be adjusted according to the evaluate results. A service lifetime testing experiment of gear case is utilized to validate the prediction model. The proposed model achieved reasonable precision with an error of less than 1 hour between the failure time of experimental results and the forecasting remaining lifetime. The adaptive prediction method can deal with the real-time lifetime forecasting for multiple factors and nonlinear system without specific parameters structure.
Higher Order Sliding Mode Control for a Class of MIMO Systems
Authors: Li Jing Dong , Zhang Jing
Published: October 2013

A higher order sliding mode control algorithm is proposed to design and analyze for a class of MIMO nonlinear systems with unknown nonlinearities. The proposed control scheme based on geometric homogeneity and sliding mode control provides a general approach to design controller for near space vehicle system. Simulation example results demonstrate the advantages of the strategy.
Design of Automatic Sunlight Tracking Solar Panel System Based on Single Chip Microcomputer
Authors: Gai Zhi Wu , Gao Si Qi , Long Jian
Published: October 2013

Solar energy is a kind of renewable energy, it‘s abundant, clean and environmental protection. In the current theme that calls for saving energy and reducing pollution, it’s undoubtedly of great significance to make full use of solar energy. In order to effectively use solar energy, we developed an automatic sunlight tracking solar panel system based on single chip microcomputer. We use MC9S12XS128 single chip microcomputer as the main control chip, and acquire signal with the sensor composed of photoconductive resistances. According to the signal collected by sensors, the control signal drives step motor to rotate, so that the system can follow the sun, ensuring that solar panel is always vertical to the sunlight, so it can absorb and convert solar energy to the maximum extent.
Study on the Characteristics of Photovoltaic Large Array Based on the Double Diode Model
Authors: Zhang Jun Hong , Wei Xue Ye , Hui Zi Nan
Published: October 2013

Research on the mathematical model and output characteristics of a large photovoltaic array has important significance for optimal allocation and maximum power point tracking. Based on the double-diode model of photovoltaic cells, this paper deduced the mathematical model of a large photovoltaic array and made the improvement to the model and parameter optimization. According to the principle of the maximum power point matching, the large photovoltaic array MATLAB simulation mode of the improved double diode was established by use of the Newton - Ravson algorithm to determine the values of Rs and Rp. The model has the advantages of simple structure, fast operation, and the output characteristics for various light irradiation and temperature levels could be simulated exactly only by use of some parameters from photovoltaic cell production businesses. The output current data of PV module under different temperature and illumination were measured by experiment. Compared with the simulation model, it is concluded that the precision of the model in low light and high temperature condition is better than that of the single diode model, and can be applied to various types of large photovoltaic array..
A New Method to Measure the Absorption Coefficient Based on the Sound Pressure Delaying
Authors: Huang Da Yu
Published: October 2013

Absorption coefficient is an important parameter of the absorption function of the absorption material. Traditional measurement methods of absorption coefficient are standing wave tube and reverberation which have some shortcomings. In this paper, phase of the sound pressure measured by two equal distance microphones placed in the front of the absorption material is delayed in order to attain the absorption coefficient. At the last, an experiment for one absorption material is carried out, the experiment results compare with the results of the other methods above mentioned that denotes that the theory is correct and practicable.
Key words: absorption material standing wave reverberation time delaying
Research of High Speed Spindle Control Method Based on Neural Network
Authors: Meng Jie , Li Ze Lun , Lv Zhong Liang , Liu Min
Published: October 2013

High speed spindle is a multivariable and strong coupling complex system. In order to improve its dynamic response characteristics and control effectively, based on vector control, the high speed spindle needs to be decoupling first. Then neural network theory and BP algorithm are adopted to form a speed controller to adjust the rotational speed. In this controller, gradient searching technique is applied and the proportional and integral parameters are used as weight of neural network which is employed to adjust the corresponding control parameters. Therefore, a new model of high speed spindle is set up and simulated. The result of simulation indicates that the way combine the decoupling method and the speed controller based on neural network can track the rotational speed more accurate and promote the robustness of high speed spindle.
A Machine Vision System for Measurement of Mechanical Parts Based on LabVIEW 2012
Authors: Wang Yong , Lv Hong Ying , Wang Neng
Published: October 2013

A method to develop a vision system for dimension measurement of mechanical parts based on LabVIEW 2012 was proposed. The major emphasis was on how to create the sub-VI (Virtual Instrument), which could be embedded in an automatic vision measurement system, with various image processing techniques in Vision Assistant 2012. Experiment had been carried out to measure mechanical parts with this vision system, and the results showed that the method had the advantages of short program cycle, high measurement accuracy and easy to realize automation, and therefore had broad market prospects.
Study on Cerium Doped Flower-Like ZnO Microcrystaline Preparation and its Microwave Absorbing Properties
Authors: Wang Zhi Feng , Zhang Yan Hui , Mao Jie , Wang Jian Zhong
Published: October 2013

Hydrothermal method was used to prepare Ce doped ZnO. Effects of doping ratio, reaction time, reaction temperature, filling degree on the flower-like morphology of ZnO were studied. And the phase, morphology and size of the products were characterized by XRD and SEM. The vector network analyzer was used to characterize the products electromagnetic performance. The results show that, Ce is successfully doped into the lattice of ZnO. The products maintain perfect flower-like structure when Ce:ZnO (molar ratio) is 0.5%. However, the flower-like morphology is damaged more and more obviously with the doped concentration increasing. The crystal growth rate accelerates with reaction temperature increasing. Microwave absorbing properties of ZnO can be improved greatly by doping Ce. The reflection loss is more than 10dB when the frequency between 9.8 GHz and 11.6GHz.
A Tracking Controller Design for Discrete Nonlinear Singularly Perturbed Systems Based on Fuzzy Singularly Perturbed Model
Authors: Sun Cheng Gong , Li Li
Published: October 2013

For a class of discrete nonlinear singularly perturbed systems, a tracking controller based on fuzzy singularly perturbed model (FSPM) and linear matrix inequality (LMI) approach is developed. Firstly, a series of dynamic TS fuzzy singularly perturbed subsystems are built to approximate a discrete nonlinear singularly perturbed system and a discrete reference model with the same fuzzy premise is chosen to design expected trajectory, then a kind of controller is developed to make the slow states of the closed-loop system follow those of the reference model. The linear feedback gain of the controller can be solved by the LMI approach. Discrete Lyapunov constitute techniques prove the stability of the closed-loop systems. The effectiveness of the approach is illustrated by the simulation experimentation.
Experimental Study on the Distribution Coefficient of Horizontal Force Acting on the Wharf Transverse Bents
Authors: Yue Zhang , Feng Zhu , Wang Pei Ran , Li Xiang
Published: October 2013

The force of ship is one of the main loads which High-Piled Wharf bears, the assignation of transverse component on each bent is the precondition of the calculation which simplified the wharf structure into plane bent. The taking value of transverse component on bent influences a lot on the result of structure calculation. Nowadays, the design of High-Piled Wharf uses the value from the distribution coefficient in the Design and Construction Code of High –Piled Wharf. The results show that the distribution coefficient taken in the code is under the precondition that considering the beam is rigid; the relative stiffness of beam and pile can influence this distribution coefficient. Considering the flexibility of the beam, the distribution coefficient of the horizontal concentrated force on transverse bents will change.
Force Distribution Effect on Clasp Mark of Metal Shell
Authors: Li Hong Jun , Yan Long , Wang Dong Feng , Tang Xing , Zuo Dan Ying
Published: October 2013

For the existing squeezing machine of metal shell,in a lot of squeezing experiments, we can discover that the depth of clasp mark of different metal shell are diverse in the same experiment, adjust the stress point distribution of cylinder in the squeezing positioning plate and squeezing mobile plate, obtain the experimental data and analyze it, analyze the effect of multi-point force distribution on the clasp mark of the metal shell.
Study on Application of Insulating Materials in Electrical (Electronic) Equipment
Authors: Zhang Ji Hong , An Da Wei
Published: October 2013

Various types of insulating materials in electrical equipment is not only widely used, but also play a crucial role to enhance the insulation of electrical equipment performance and to improve the quality of electrical equipment. Different devices require different types of electrical insulating materials reliability,and in order to improve the safety factor of electrical equipment, it is necessary to strengthen the study on reliability of electrical insulating materials.
The Reversing Design for the Cooling Water Cavity of Engine's Cylinder Head and CFD Analysis
Authors: Liu Xiao Xu , Chen Min
Published: October 2013

The water cavity model of engines cylinder head with 4 cylinders was reconstructed by Imageware and UG through slicing method. The reverse design methods used for complex interior structures surface were explored based on slicing method through remodeling the water cavity. The technologies of reverse design such as the measurement method of points cloud, points cloud data treatment and water cavity remodeling were studied. CFD analysis of water cavity model was done by SolidWorks Flow Simulation, the problems and reasons which may be in water cavity model were pointed out.
Parametric Design Model of Disc-Scoop-Type Metering Device Based on Knowledge Engineering
Authors: Yang Yu
Published: October 2013

Traditional agricultural machinery design methods usually go through longer-design cycle and can hardly make good use of existing knowledge and experience. In view of this problem, parametric design theory and knowledge-based engineering were applied to the disc-scoop-type metering device designed to improve the design experience and reuse design knowledge. Through the knowledge-based parametric design method, the design framework model of disc-scoop-type metering device was put forward. The knowledge library on the basis of design rules and characteristic similarity-based case library were created, and disc-scoop-type metering device parametric design system based on knowledge had been developed on the platform of Pro/Engineering. The rapid design for knowledge-driven model of disc-scoop-type metering device was realized. The specific design examples clearly indicated that the establishment of the system considerately improved the quality and efficiency of the design.
Numerical Calculation of the Ice Grow and Empirical Calculation Results
Authors: Sharapov Dmitry , Shkhinek Karl
Published: October 2013

Ice loads is one of the most important parameters which should be taken into consideration for arctic structures. Ice load highly depends on the ice thickness. It is always recommended to consider the ice thickness data from field observations. However if data is not available it is necessary to calculate the thicknesses of ice level. Calculation is also important for the areas where the thermal fluxes through structure should be taken into the consideration. In this work numerical simulation of Stefan problem for determining of ice level thickness is presented. The results show good correlation between empirical, experimental data and the results from finite element simulation of Stefan problem.
Study on the Effect of Cone Diameter on the Cone Resistance and Steady Flow Force of Hydraulic Poppet Valve
Authors: Shi Jin Yan
Published: October 2013

The 3-D model is established and is meshed. Then the inner flow field of the poppet valve is simulated at different cone diameter E, different opening positions. Analyzing the result of simulation, the variation curves of cone resistance and steady flow force in different opening of different structure parameters can be obtained. This study for the valve offers the significant reference for designing the valve and optimizing its performance.
Process Simulation of Anchor Stirring in Crystallizer
Authors: Wu Qing , Guo Li Ping , Chen Jian Xin , Li Yin Hui , Lu Ai Dang
Published: October 2013

The paper studies the mixing effects of anchor stirring on crystallization hybrid process. The single phase flow field of three dimensional in crystallizer of 5 L is simulated by the software of Star CCM+. The change of flow field is analyzed under different stirring speed in ammonium chloride solution. The simulation research shows that the speed of fluid in the area around impeller is high, but in the surrounding and bottom area of stirring shaft is low after forming a relatively stable flow field in the crystallizer. As the stirring speed enhancement, the speed of fluid in the surrounding area of impeller and velocity gradient increase too. However, the flow of fluid in the area of axial direction is not sufficient.
Thermal Degradation of Pa 6 Film Prepared from a Phenol/Dichloroethane Mixed Solution
Authors: Wu Tzu Ming , Chen Chien Jen , Lai Yu Ling , Shyr Tien Wei
Published: October 2013

Phenol and dichloroethane with a weight ratio of 3:2 were prepared as a mixed solvent for bulk Polyamide 6 (PA 6) polymer to form PA 6 films. Thermogravimetric Analyzer was used to analyze the degradation behavior of the PA 6 films. The results showed that the bulk PA 6 underwent a one-step thermal degradation process, but the PA 6 films underwent a two-step thermal degradation process. The junction points of the two degradation steps in the PA 6 films appeared at 410-425 °C. The thermal stability of the PA 6 films prepared from the mixed solvent obviously is lower than that of the bulk PA 6 polymer.
Research of Rolling Bearing Selection Based on Hybrid Algorithm
Authors: Tian Jian Ping , Huang Yu Chun , Yang Hai Li , Tang Pei , Chen Gang
Published: October 2013

According to selection of bearings for the impact of multiple factors and ambiguity, a mixed calculation method of variety of algorithms was presented. Problem was better solved to quantitative of the multiple factors. The unique results of the Selection were ensured. Through MFC, Pro/Toolkit of Pro/E interface was called to generate three-dimensional graphics of bearing automatically in VC++ platform. The three-dimensional graphics of bearing could be used directly in the assembly model of product.
Optimal Design of Cooling Device for High Power LED Headlamp
Authors: Zhang Chun , Cai Yi Xi , Wang Jing , Li Xiao Hua , Zhao Xin Jie
Published: October 2013

The aim of this study is to optimize the cooling device for high power LED headlamp. The feasibility of using SMD (Surface Mounted Devices) resistor instead of LED chips has been analyzed by FloEFD and the relationship between temperature and total input power has been found. In order to evaluate the cooling performance of the heat pipe, two different arrangement forms has been used. Based on the simulation, heat pipe arranged in rectangle can satisfy the requirement of high-power LED headlamp. These results also laid a theoretical foundation for later experiments.
Synthesis and Characterization of Alcohol Soluble Acrylate-Polyurethane Adhesive for Low Surface Energy Substrate
Authors: Yang Jian Jun , Jin Zhi Lai , Zhang Jia Nan , Wu Qing Yun , Wu Ming Yuan
Published: October 2013

In this paper, vinyl-terminated polyurethane was synthesized with polypropylene glycol (PPG, Mn=1000) and toluene diisocyanate (TDI) as raw materials and hydroxyethyl acrylate as the blocking agent. Then the alcohol soluble acrylate-polyurethane (PU) adhesive for low surface energy substrate was acquired from vinyl acetate, acrylate and vinyl-terminated PU by solution polymerization. The resin was characterized by Infrared spectroscopy (IR), thermogravimetry analyses (TGA) and differential scanning calorimetry (DSC) respectively. Adhesion performance to biaxially oriented polypropylene (BOPP) was also studied. The results showed that the incorporation of PU can improve the viscosity, heat resistant, peel-off strength of the adhesive.
A Vision of Cloud Manufacturing Service Paradigm for Group Manufacturing Companies: A Tendency of Manufacturing Resources Sharing
Authors: Zhou Jing Tao
Published: October 2013

Manufacturing enterprise group possesses the greatest wealth of resources and knowledge for sustainable product and business development. These resources and knowledge have gradually become the key factor of core competitiveness and product innovation for manufacturing enterprise group. However, the resources inenterprise group are usually distributed in different subsidiary companies,which means they can’t be centralized used and can’t be made the most use of,constraining the competition and development of enterprise. It bring soutstanding contradiction problems between the demand and resources sharing. By the comparison of different resource sharing and coordination schemas of current advanced manufacturing paradigms, and the analyzing of the resource requirements and tendency of the sharing and centralized control of resources in manufacturing enterprise group from the develop point of view, a new cloud manufacturing service schema vision for manufacturing enterprise group is proposed based onthe Cloud Manufacturing idea to strengthen manufacturing enterprise group’s management and control power, enhance service capabilities of its resources. As same as the cloud manufacturing idea, the schema promises elasticity, flexibility and adaptability through the on-demand provisioning of manufacturing resources as a utility.
Fiber Configuration of Air Jet Vortex Spinning Yarns
Authors: Zhong Ya Hong , Ma Jian Hui , Xing Ming Jie
Published: October 2013

In this paper, the spinning process of air jet vortex spinning was described. The structure of air jet vortex spun yarn was studied by means of blending tracer fibers in spinning. Then the yarns were viewed with the optical microscope and SEM etc. The result shows that air jet vortex spun yarn comprises two parts. The outer layer, composed of twisted fibers, presents helical form. And the inner layer contains about 30% fibers untwisted or slackly twisted. The distance between twisted fiber groups is very short, so the borderline isnt obvious. There is a certain angle between core fibers in parallel and the axes of the yarn. The coefficient of fiber migration of the yarn was calculated, and it is lower than that of ring spun yarn and compact spun yarn.
Research on Data Destruction Mechanism with Security Level in HDFS
Authors: Qin Jun , Zhang Ya Ping , Zong Ping
Published: October 2013

In cloud computing applications, the data security is a primary concern of user. In this paper, for the problem that data of the HDFS cannot be destroyed completely in open source cloud storage system, which may lead to data leakage, it designs a destruction mechanism of HDFS with multiple security level. This mechanism make data effectively destroyed by the method of data overwrite which makes a balance between security requirements and performance requirements. The Simulation experiments show that the mechanism can override a Block file in HDFS environment effectively to achieve the purpose of data destroying. At the same the overhead of different overwrite algorithm is different also which can ensure the security and efficiency is balanced.
Classify the Search Result Based on IBM OminiFind Edition and UIMA
Authors: Du Jian Xia , Sun Xiao Dong , Geng Zeng Min
Published: October 2013

A method is proposed which uses the IBM OmniFind Enterprise Edition combined with IBM open source of unstructured information management architecture of Unstructured Information Management Architecture (UIMA), to realize the IBM OmniFind Enterprise Edition semantic search engine search and result classification. This method makes the search space and function more widely, which can not only meet the higher demand of the part of the user, but also increase the competitiveness of the client application.
The Research of Software Testers Training Mode Based on O-Ring Theory
Authors: Jia Li Min , Zhou Ming Ji , Chen Zhuo Yi
Published: October 2013

The talent training program is an important part of professional construction. Our college passed survey analysis and used the O-ring theory to train the talents who were badly needed and to reform and innovate traditional training mode with the analysis of enterprise professional ability and the professional construction thought that took employment demand as guide, took professional ability as principal line and took vocational sustainable development as fundament. All of these brought about an all-round development to skillful persons.
A Novel Method Based on Ant Colony Optimization for Gene Selection
Authors: Cui Guang Di , Wang Gang , Li Ying , Fan Ji Zhang
Published: October 2013

In this paper, an ant colony optimization based method (AM) is proposed for gene selection. AM consists of two stages. In the first stage, some redundant genes are filtered by information gain (IG). In the second stage, a fuzzy adaptive ant colony optimization is applied to gene selection. We evaluate the performance of AM on five gene expression datasets, which have dimensions varying from 7129 to 12000. We also compare the performance of AM with the results obtained from four existing well-known optimization algorithms. The comparison details show that AM could get better classification accuracy.
Study of Solutions for a Non-Newtonian Filtration Equation with Nonlocal Boundary Condition
Authors: Zhang Ji Bing , Gao Yun Zhu
Published: October 2013

In this paper, a non-Newtonian filtration equation with nonlocal boundary condition and a localized source is studied. The results to existence and blowup of solutions are given.