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The microstructures of as-cast and homogenized Al-Cu-Mg-Ag alloys with 1.98, 3.66 and 5.16 wt.% Cu contents (Alloy 1, Alloy 2, Alloy 3, respectively) were investigated by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and calculation of phase diagram. The results indicate that the second phases in the as-cast alloys consist of θ (Al2Cu), ternary α (Al)-θ (Al2Cu)-S(Al2CuMg) eutectic and Fe-enriched phase. The invariant reactions are L→α (Al) + θ (Al2Cu) at 542°C and L→α (Al) + θ (Al2Cu) + S(Al2CuMg) at 505°C during solidification. An increase of Cu content promotes the formation of θ (Al2Cu) phase, therefore leading to the total second phases increasing in the as-cast alloys. The ternary eutectic completely dissolves into the matrix after the first-step homogenization at 490°C, and θ (Al2Cu) phase dissolves subsequently after the second-step homogenization at 510°C. It is suggested that the proper homogenization treatments are 490°C/24 h for Alloy 1, 490°C/24 h + 510°C/24 h for Alloy 2 and 490°C/24 h + 510°C/48 h for Alloy 3.

This paper aims to research the high-temperature oxidation behavior of TiC/Mo composite. Adding 5 wt.% TiC, Mo-based composite was prepared by Spark Plasma Sintering. The composite was oxidized at different temperatures (400°C, 600°C, 800°C, 1000°C and 1200°C) and times (5 min, 10 min, 20 min, 30 min and 60 min). When oxidation was at 400-1000°C for 20 minutes, the degree of oxidation intensifies with the increase of temperature, and TiO2 was observed at 1000°C. While the temperature was 1200°C, the oxidation rate gradually decreased with the increase of time. The result shows that the formation of TiO2 can inhibit the oxidation process.

In this paper, a low nickel superalloy used for automotive valves was treated at different heat treatments. The metallographic structure and hardness with various heat treatment process were studied. Optimized process guarantees test superalloy can meet the technical requirements.

A biaxial test model was established based on the discrete element method to simulate the microscopic evolution of non-viscous soil upon loading. The shear strain, deviator stress and volumetric strain of the samples at different time steps were recorded, the evolution process of the force chain in the samples was observed, and the average degree (coordination number), 3-cycle and average clustering coefficient over force-chain particles were also analyzed respectively from the perspective of complex network. The following analysis results are obtained. The larger the value of inter-particle friction coefficient, the higher the peak value of shear stress, and the more obvious the strain softening phenomenon. The force chains in the samples with higher inter-particle friction coefficient tend to be more vulnerable to damage during loading. In the loading process, the average degree first increases, then decreases and finally tends to be stable. The value of average degree increases with the increase of confining pressure, and decreases with the increase of friction coefficient. The clustering coefficient of the particles within the force-chain particles is linearly related to the average length of the force chains at critical state.

The microstructure of Al-1.01Mg-1.11Si-0.38Cu-0.69Mn aluminum alloy plate hot-rolled from homogenization and homogenization-free ingots were investigated by optical microscopy and scanning electron microscopy assisted with energy dispersive spectroscopy (SEM/EDS). The results showed that there are 3 main kinds of constituents such as Mg2Si, AlCuMgSi and AlFeMnSi in the as-cast Al-1.01Mg-1.11Si-0.38Cu-0.69Mn aluminum alloy ingot. After homogenization treated at 545°C for 24h, the black Mg2Si and the white bright AlCuMgSi particles in the ingot dissolved into matrix, but the grey AlFeMnSi phase partly dissolved, contracted into sphere and become coarse, many ultrafine dispersoids appear in the dendritic arms. The constituents in the plates hot-rolled from the homogenization and homogenization-free ingots are both distributed as broken chains along the rolling direction. However, compared with the particles configuration in the plate that hot-rolled from homogenization ingot, the particles in the plate that hot-rolled from the homogenization-free ingot are finer, more numerous and more homogenous, and with insufficient recrystallization when the plates are solution treated at 545°C for 2 h and then water quenched.

Fluoride conversion films were synthesized on cast magnesium alloy AZ31 by immersion in hydrofluoric acid for different days to improve the corrosion resistance of Mg alloys as degradable implant material. The effects of the films on the corrosion behavior of the mg substrates were investigated by immersion tests. The results showed the fluoride conversion film was affected by the distribution of the chemical component of cast AZ31 alloy and the film on the second phases has more pores and micro-crack, but the bottoms of the pores were also covered by the conversion film and the substrate was not exposed through the pores. The fluoride conversion coatings significantly improved the corrosion resistance of cast AZ31 alloy. The film on the second phase with more pores is the first to dissolve. The most improved corrosion protection was achieved by 15 days treatment with the thickest film in terms of hydrogen evolution rate and damage morphology.

The monochromator for the new residual stress diffractometer at China Advanced Research Reactor (CARR) was simulated and optimized using SIMRES software. Objected the Fe (211) diffraction peak, the effect of horizontal and vertical curvature of Si (400) monochromator on Figure of Merit was studied to optimize the focusing parameters. With the optimal focusing condition, the influence of wafer thickness, number of wafers, packet height and gap of packets on performance of instrument was calculated consequently and the corresponding geometrical size was fixed. Finally, the design of the monochromator for the new residual stress diffractometer at CARR was completed.

The formation of layered ripples covered pyramid structure is reported on 316L stainless steel surface with femtosecond laser pulses in this paper. These unique structures form though a combination of preferential ablation of flat regions around the pyramids and extension of layered ripples created during the ablation process. The cause of the formation about these structure is investigated using multi-means and the results show that these structures are derived from an inhomogeneous distribution of laser fluence, which is caused through a combination of the redeposition of nanoparticles and the local oxidation as well as the geometric factors.

The blade is one of the key part of aero engine because its shape precision and surface quality significantly influence the performance, efficiency and reliability of the engine. The blade surface is generally obtained by precision finishing process, which is a repeated work of profile error measurement, profile error calculation and error correction manufacturing. For profile error calculation, the matching of measurement points and ideal blade surface must be firstly performed. However there is few detailed work reported on matching algorithm. In this paper, a new matching algorithm for profile error calculation was proposed. Firstly, the coarse matching method based on characteristics of blade section curves between measurement points and its corresponding ideal section curve was studied. Then the Sigular Value Decomposition (SVD)-Iterative Closest Point (ICP) precision matching method was adopted to improve the matching precision. After that, the weight calculation method was applied to balance the profile errors among different section curves. Simulation work was performed to validate the proposed matching algorithm. Results shows that micrometer-order matching accuracy of the blade section curves could be obtained through the above-mentioned three matching steps.

The controllable deposition of hydroxyapatite (HA) on femtosecond lasers micro-patterned Titanium (Ti) plates was studied in simulated body fluid (SBF). Energy Dispersive Spectrometer analysis and X-ray Diffraction (XRD) analysis show that the hydroxyapatite deposites on the pattened titanium surface in 1.5 SBF and SEM studies show three growth modes of HA (homogeneous hydroxyapatite layer, needle-like structure, and plate-like structure) deposited at different spots of the Ti plate surface. This stereo reticular structure of hydroxyapatite could be regarded as promising candidate material for metal implantation.

In recent years, power by wire (PBW) technique is developed in the European and American aviation field, and one of its important bases is electro-hydrostatic servo technique. In this paper, speed controlled and displacement controlled electro-hydrostatic actuation systems are modeled and simulated, by comparing their Bode graphics and time-zone respond curves, which shows that displacement control has small load inertia and high gain, so its dynamic performance is better. Thus, conclusion can be drawn that speed-displacement composite control may indeed improve the dynamic performance of electro-hydrostatic actuator.

A model of the problem of variable load line contact EHL with single asperities is established. The influences of the single asperities and variable load on the pressure and film thickness are investigated. Numerical results reveal that the existence of single asperities can lead to pressure change drastically and film thickness become thin in the vicinity of asperities. The effects of the variable load on the pressure and film thickness are discussed. The comparison of the variable load and steady load is given.

For the study of fracture characteristics of ultra-high performance cementitious composites(ECC),16 different sizes of three-point bending beams were made and ultimate load, ultimate deflection and crack mouth opening displacement ,the curve andcurve of ECC were contructed,with the method of fracture work recommendedby RILEM , the external work was respectively calculated by the curve ofand, which determined the fracture energy of ECC.Results show that two kinds of calculation result are roughly equal;The influence of size effect on fracture character was: fracture energy increased with the increasing of the crack-depth ratio, the fracture energy of concrete specimen is the maximum when the crack-depth ratio is 0.4 ; is proportional to the initial crack-depth of the specimen, but there is no relationship betweenand crack-depth ratio. This paper would have great significance for the study of fracture characteristics of ECC.

Through the three-dimensional heat transfers numerical simulation of eight kinds with the different number of holes, void ratio and arrangement of sintered shale porous brick (size: 240mm×190mm×90mm), which simulate the sintered porous brick under two different laying way that is 240mm wall and 190mm wall of equivalent thermal conductivity. The result shows: the same kind of porous brick as 240mm wall and 190mm wall, when the equivalent thermal conductivity coefficient has phased difference that the wall insulation effect is obviously different. Through the analysis of two different methods of the masonry wall thermal insulation performance of the influence by different reasons, targeted to put forward some suggestions in order to improve calorific performance of the wall.

The fast pyrolysis of corn straw in the fluidized bed reactor to produce bio-oil, the preliminary qualitative research on the composition of the bio-oil was analyzed by GC-MS to provide the basis for their purification, refining and long-term stability studies. The result shows that: the bio-oil producted by corn straw pyrolysis contains 66 components, mainly containing phenol, furan, acetic acid, propanoic acid, ethanone, vanillin, aldehyde, bio-oil water content is 33% and pH is 3.1, which has a great significance to improve the quality of bio-oil.

A certain amount of Ti was added into high boron alloyed stainless steel with content 2.25%B, and then high boron alloyed stainless steel composite casting slab with three layers was fabricated , in which central layer is high boron alloyed stainless steel containing Ti and cladding is plain 304 stainless steel without Ti. The microstructure of core and interface and the mechanical property of the composite plate were studied after hot forged, hot rolled and solution treated process respectively. The results show that the boride in as-cast microstructure of core are (Fe,Cr)2B phase with long strip and TiB2 phase with petal shape, moreover the formation of TiB2 phase decreases the amount of (Fe,Cr)2B phase. Two kinds of boride are fully broken after hot rolling and distributed in the form of block uniformly in matrix, and TiB2 phase is more fine uniform. The mechanical property especially plastic performance of high boron alloyed stainless steel composite plate containing Ti after solution treatment is improved significantly, it has reached and surpassed the United States ASTM A887-89 delivery standards.

A reasonable and effective control strategy for HEV (Hybrid Electric Vehicle) with HESS (Hybrid Energy Storage System) can improve the system efficiency and battery service life. A dynamic programming-based global optimal control strategy which fully considered the efficiency of each component in HEV is presented. To compare with the nonlinear proportion factor dynamic coordination strategy, the fuel consumption is not increased. The cycle numbers of battery are further decreased which benefits its cycle life improvement. The regenerative energy callback ratio improves 3% under the shanghai drive cycle as an example. Since this optimization algorithm considers efficiency of each subsystem, the efficiency optimum under the selected driving cycle was realized. It can also provide a reference for the non-linear scaling factor allocation strategies to determine the scale factors.

The digital clock is a clock designed by digital circuit. Now, there are some limitations in the use and regulation of the digital clock in the large square. In this paper, the infrared remote-controlled digital clock based on FPGA can solve this problem well. This digital clock is composed of three parts: infrared remote control module, main circuit of the digital clock and function modules. And it is designed by the VHDL hardware description language, in the Quartus II software development environment.In addition, the digital clock has many extended functions, such as the hour timekeeping, alarm clock and temperature measuring. Besides, it has many advantages, including stable system , simple structure, short development cycle, fast speed and the strong usability.

The functional properties of peanut protein were determined under different conditions of ultrasonic waves which are used for processing the solution of peanut protein powder. The functional properties of peanut protein were enhanced remarkably by ultrasonic waves. Processed by ultrasonic waves for20 min, foaming ability increases to 60% from 30%, and foam stability increases to 50% from 17%. Processed by ultrasonic waves for 15 min, emulsifying ability increases to 49.3% from 38.9% obviously, and emulsion stability increases to 100% from 91.4%.When the solution’s PH equals 4, foaming ability of peanut protein to be minimum. Foaming ability increases to 27.9% from 26.2% by ultrasonic waves. When the solution’s PH is from 6 to 10, emulsifying ability increases to 50.7% from 44.3% by ultrasonic waves. When the concentration of the solution of NaCl is 0.2mol/L~0.4mol/L, emulsifying ability increases to 45% from 38.4% by ultrasonic waves, but it will drop if we continue to increase the concentration of the solution of NaCl. Processed by ultrasonic waves for 6 min,oil absorption ability increases to 1.51 mL/g from 1.26 mL/g. Processed by ultrasonic waves for 8 min, the solubility of low concentration peanut protein solution (1g /100mL~2g/100mL) enhanced doubly, and the water holding capacity increases to 2.9% from 2.4%.

In order to analysis the mechanical properties of clinched joints of titanium alloy, three types of the clinched joints in similar and dissimilar sheets called , TA1-TA1,TA1-H62 and Al5052-TA1 were respectively studied through the method of experiment. Tensile shear tests were carried out to examine the mechanical behavior of them, the failure modes also been analysised. It can be seen in the experiment that the failure mode of the three kinds of joints were fracture of upper sheet at the neck with the minimum thickness. Comparison shows that improve the plasticity of the lower sheet can improve the quality of joint when the upper sheet was titanium alloy sheet.

Bearing capacity tests of three reinforced concrete lining segments were carried out. The effect of the loading method and ultimate bearing capacity of the reinforced concrete lining segments and the maximum displacement and reinforcement ratio on the failure mechanism was analyzed based on the simulation results. The simulation results show that the yield load and ultimate load of the lining segments can be effectively increased because of the axial force effect. the loading method on the full surface was proposed. The the ultimate load and yielding load increase as the reinforcement ratio increase is radial distribution in the state.

Based on the measured water level data after the impound of Three Gorges reservoir, the water level short-term prediction model of income flow of Chenglingji, Han river and Hukou is constructed by multiple regression method. The comparative of measured water level and predicted water level indicated that, the prediction of income flow is accord with the real flow. Meanwhile, according to statistical analysis of the water level and flow, and considering the total inflow and the jacking of branch inflow, the water level short-term prediction model for middle stream Yangtze River is set up separately. Then, by using multiple regression model, the multiple regression formula for water level prediction is constructed , to applied to the river reach where branch inflowed or river reach jacked by the downstream. Compared with the field observation data, the prediction results are quite precisely.

Multi-storey RC-frame structure occupies a large proportion of the building structure in our country, the collapse of multi-storey frame structure in great earthquake is very serious, and it has become a major threat to people's life and property security, so research of the rule about structural collapse and define the critical state of structural collapse accurately is necessary. This paper focuses on the rule of structural collapse, takes constant stiffness multi-layer RC-frame structure as the object of study, with height, span and number of floors as the variables, uses nonlinear finite element software ANSYS/LS-DYNA, bases on elastic-plastic time history analysis, studies the rule of plastic deformation’s development of constant stiffness multi-layer RC-frame structure, and the relationship between story-drift and structural collapse.

With the rapid development of wireless network technology, according to the actual need, the computer network group network type and each node has different function, so that the computer network system has node complexity, structure complexity and various other complexities. For these reasons, the large scale computer network can be treated and researched abstractly as specific Chirp-UWB network. Therefore, to keep up with the trend of technology progress by means of computer wireless technology, aided design of wireless communication system, it is quite necessary for the implementation of computer management of production safety.

Geza arc is the important parts of Yidun island arc in southwest of Sanjiang tectonic magmatic belts, it located in the southern tip of the Yidun island arc, which is a newly discovered copper polymetallic ore concentration area in the recently years in China. Based on the development stage of island arc orogenic, the distribution of intrusive rocks, composition, geochemical characteristics, Geza island arc granits belt can be divided into three belts. Geza island arc several typical porphyry deposits Pb isotopic data show that Pb206/Pb204 17.680~19.165, Pb207/Pb204 15.453~15.773,change in scope, Pb208/Pb204 37.730~39.654. Most of samples are normal lead, Pb isotopes focused on the side of orogenic evolution line and the lower crust range,with the characteristics of crust-mantle mixed source.

Lead-acid battery has perfect characteristics, such as good performance, rich raw materials and low prices, it plays an important role as starting power and auxiliary power in vehicles, Because of inadequate understanding internal active material in physical or chemistry reaction in charging process or technical conditions of limit ,the charging methods mainly contents the constant voltage ,constant voltage the current limit, constant current .These methods fail to damages such as overcharging ,short-charging, gas chromatography and high electrolyte temperature. So, this paper analyzes concentration polarization and electrochemical polarization in fast charging based on the MAS theorems. However, pulse discharge technology can change the concentration of ions near the electrode, which speeds up the electrochemical reaction rate and increase the energy into the chemical energy efficiency.

Geza island arc located in the southwest Sanjiang tectonic igneous rock belts which was a products of Ganzi-Litang oceanic crust diving to Zhongdian Landmasses in late Triassic. Lithogeochemical characteristics shown that the porphyry(porphyrite) and island-arc granite rocks have the same rock series (high-K calc-alkaline) and the same genetic type (I-type granite); these rocks trace elements similar to the granite of island arc,which enriched in Ba, La, Hf, Au,chalcophile elements Cu,Pb, siderophile elements Mo, Ni, and depleted in Rb, Nb, P, Ti. In this region, the similarities of porphyry and local acidic volcanic rocks in the main elements, REE and other trace elements and the composition suggest that they both have the same or similar magmatic source rocks. It is shown that the characteristics of the rock with the island arc granite partial melting of source rock, that may come from the arc type volcano rock or island arc volcano rock cognate magma evolution.

With the growing renewable resources such as wind and light accessing to grid，the existing regulation and control means face threats and challenges as a result of the change of grid architecture. The distributed energy coordination scheduling system is proposed to use the various resources of intelligent distribution network platform synergistically and complementary. This paper introduces the construction idea，main module and function implement of this system. According to the benefit analysis, this system is proved to improve the reliability and economy of grid operation under the widespread accessing to distributed resources.

For the insufficient of the present monitoring and control system of the crane in communication mode, monitoring data and data is stored; the system of gantry crane safety monitoring and control based on S3c6410 ARM11 is designed in this paper. The Zigbee wireless networking is used to collect and deal with the distributed sensor monitoring, and it can find the problems and to control in the shortest time. To realize the "black box" record function, the SQLite3.0 embedded database is transplanted to real-time storage the Critical data. It is confirmed that the system operation is stable and reliable that can guarantee the monitoring and control system operation security and improving work efficiency, and it has a good application prospect.

This paper will present a novel wide-band double-ridged standard horn antenna at 0.5~6GHz with the software named Ansoft HFSS, which is mainly used for far-field antenna measurement system. A simulation model of wide-band double-ridged horn antenna and the detailed design of each part of the structure will be given. With optimization in HFSS, the results show that the VSWR in the whole frequency band is below 2.4 and average gain larger than 6 dB. Finally, results of the measurement for VSWR, gain and radiation pattern are presented and discussed, which indicates that the built prototype is consistent with the design goals very well.

Echo fidelity is an important characteristic of radar simulator and it influences accuracy and reliability of radar test directly. This paper introduces the research status of simulator fidelity and sort out the definition and property of radar echo simulation fidelity. Then we propose the numerical calculation methods for individual indicators, including similarity calculation, dissimilarity computing and interval changes three parts. Finally, on the basis of the evaluation system, we propose two calculation methods for entirety fidelity, they are weighted numerical calculation and umbrella figure methods.

Since the 1990s, with the defense, deterrence, alarm in one of the electronic fence system is gradually being widely developed in the field of public safety. The composition and control system design of a balanced tension electronic fence alarm system is described in this paper. This system has a balanced without fatigue characteristics, adapting to a variety of complex terrain environment and leaving no guard dead. It can be widely applicable to all establishments that have the perimeter guard need.

The copolymer of sodium polyacrylic acid and 2-acrylamide-2-methyl propane sulfonic acid (AMPS) was prepared by radical polymerization process, the effect of mass ratio of AA/AMPS on the viscosity of AA-AMPS copolymer were investigated. Results showed that when the mole ratio of AA/AMPS was 3:1, it had the least viscosity. The dispersion stability of synthesized AA-AMPS copolymer for nanozinc oxide was tested.

Three anionic sulfonic groups are used as monomers to synthesize sodium polyacrylic copolymers by radical polymerization process. The anionic sulfonic groups are: sodium acrylic sulfonate (SAS), sodium styrene sulfonate (SSS) and 2-acrylamide-2-methyl propane sulfonic acid (AMPS), the redox initiator are ammonium persulfate and sodium bisulfite, the chain transfer agent is sodium bisulfite. The influence of different anionic sulfonic groups on dispersion stability of nanozinc oxide has been discussed.

The Chitosan flocculant characteristics of natural, non-toxic, safe and have a good adsorption performance. This article briefly describes the physical properties and mechanism of flocculation of Chitosan, focuses on Chitosan flocculant in water treatment applications.

Design a battery with a power factor correction two level converter structure of charging power supply .Discuss the design scheme of main circuit and control circuit. Expound the calculation method of the key element parameters. The experiments indicate that the device get a good performance on output and reliability. The source is appropriate for all types of Battery charging.

the objective of this study reviewed for the classification of the oak barrels, the influence of oak barrels on wine quality and the use of the oak barrels. Generalized the characteristics of the different plant sources oak barrels, summarized the important roles of the age of the oak barrels for stability, aroma, taste characteristics of wine; introduced several processing methods for oak barrels. This paper offered to reference to choose oak barrels for according to the qualities of the wine.

Because of the extraction difficulties from brines in China, it is necessary to take advantage of the lepidolite resources, driven by the huge economic benefit and social benefit requirements. Several factories use refined lepidolite to produce lithium carbonate in Yichun city because of the rare metals and high price of battery-grade lithium carbonate. The primary separation of lepidolite from complex silicate minerals is froth flotation. In this paper, the froth flotation process for production of refined lepidolite from Ta & Nb waste minerals in Yichun city and in Yifeng town is discussed.

The anti-frost heave technology of combined operation of water purification thermal insulation system and fire pit heating system , Which is suitable for the severe cold area, has been put forward in this article.Through practical investigation, numerical calculation and simulation analysis, it is proved that this technology has feasibility and availability in rural places of sever cold area.

The fault-tolerant ability of an object-based storage system is an important factor that affects the reliability and usability of the entire system. Existing fault-tolerant methods either increase procurement cost, or impede performance. In this paper, we propose an I/O fault-tolerant method based on an application-level agent, which can perform fault-tolerance swiftly and efficiently at runtime by constructing the fault-tolerant agent’s execution engine. We consider a “disk full” exception as an example to further detail the implementation of this method. Experimental results confirm the method’s effectiveness.

In order to improve the accuracy and stability of infrared target detection, a novel moving target detection approach based on temporal-spatial domain fusion is presented. A multi-level spatial-temporal median filter is utilized to extract the background frame, with which the background clutters are suppressed by using the background subtraction technique. Then a local weighted operator is applied to enhance the targets. Lastly, the otsu thresholding algorithm is utilized to detect the targets. Experimental results demonstrate that the proposed approach is capable of detecting infrared moving targets effectively for F1 measurement up to 92.8%.

Because of their widely application of tantalum, niobium and lithium in industry, the occurrence modes of tantalum-niobium tailing mine in Yichun city was investigated by SEM, XRD, XRF measurement. Some interesting results are obtained, which is useful for the next flotation process and for the comprehensive utilization of lepidolite resources in Jiangxi province.

In this paper, for the frequent faults problems of the mine air compressor main motor, we use the BP neural network learning algorithms on the basis of the theory of multi-sensor data fusion. The collected characteristic signals were processed by the method of data fusion, and we could get the current motor fault state value. Compared to the experimental results, it can realize the fault diagnosis of mine equipment obviously.

The equivalent thermal conductivity coefficient of 10 kinds of sintered shale porous brick with different void number, void ratio, and arrangement (size: 240mm x 190mm x 90mm) are studied through 3D numerical simulation. An optimal structure design of the shale perforated brick design has been obtained. At the same time, factors such as void ratio, void number and arrangement of porous brick affected thermal insulation performance are systematically analyzed, which provides a reference to further improving the thermal insulation performance of insulation sintered shale porous brick model.

The diversity of macroinvertebrate in Sha River and Xiangshui River of Dongjiang (China) were investigated in June 2013. According to the index of biological diversity and integrity, the water quality was evaluated. It provided a reference for water pollution controlling and water resources protection.

The method to realize the communication between PC and SIEMENS S7-200 series PLC is introduced through MSComm ActiveX and RS-232 serial communication protocol under VB development environment, and it is explained that the application of this way in the control system of the manipulator in detail. The focal point of introduction is about the function setting of special registers and MSComm ActiveX on VB under free-port communication in PLC, and the way to write program is described to realize receiving and sending the data of PLC.

A chemical inducing process was developed to prepare titania-mica pearlescent pigment. MnO2 was used as crystal inducing promoters, a transformation between antase and rutile titania-mica pearlescent pigment was found by calcining at 800°C for 0.5 h. The mass ratio of mica to MnO2, pH value, temperature and dripping rate of MnO2solution and TiOSO4was studied. The crystalline form of titania-mica pearlescent pigment was measured by XRD.

The crystalline structure of lepidolite is introduced in this paper, its application in lithium ion battery is paid attention. Because of the extraction difficulties from brines in China, it is necessary to take advantage of lepidolite resources, driven by the huge economic benefit and social benefit requirements. The components and particle size distributions of lipodilites in Yichun and Yifeng are experimentally analyzed.

With the rapid development of aeronautics technology, hypersonic flying vehicle is playing an increasingly important role, yet control methods on such vehicle were stilled confined with classical PID (proportional, integration and differentiation) or its variations. In order to have better control performance, a switching control method was used to design the attitude control law for hypersonic missile, which guaranteed higher angle precise control than PID. Simulation results showed the effectiveness and the superiority of the proposed switching methods over the classical PID and other typical switching methods.

Yichunhas the largest rare-metal reserves in China, the explored reserve of lepidolite accounts for 31% in China and 12% in the world, it reserves of Rb and Cs are also the largest in China. The mining process of tantalum-niobium in Yichun and the technical reconstruction for the tantalum-niobium tailing mine is investigated.