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Silicon carbide ceramics with different grain sizes were tested at high strain rate using a small-scale gas gun with sharpened tungsten carbide projectiles impacting at a sub-ballistic velocity of 100 m/s. The resistance of ceramics to fracture was recorded by visual examination of the cracking on the impacted surface and the damage in the sub-surface region. The crack pattern and impact crater region size observed in silicon carbide specimens are generally due to their mechanical properties. Silicon carbide samples had good capacity to defeat the projectiles but the low toughness led to early failure. Raman SiC mapping was used to examine the residual stress and plastic deformation induced in each material. The silicon carbide samples showed different dynamic behaviours due to the extent of stress relaxation.

A series of sulfonated poly(arylene ether sulfone) (SPAES) membranes were prepared for microbial fuel cell (MFC) application. The performance of the MFCs equipped with SPAES membranes was researched in details. The results showed that the output power density of the MFCs with different SPAES membranes increased with the increase of the IEC at the first few days. The performances were close after long-term operation. The influence of inoculum amount, the load and the concentration of K3Fe(CN)6 on the MFC performance was also investigated.

Two kinds of novel polystyrene derivatives with oligofluorene pendants were synthesized by radical polymerization method. The polymers were soluble in common organic solvents and formed nice films by spin-coating. Photoproperties of the products were studied and small differences in conjugated structures between monomers and polymers according to UV-vis spectra. The polymers showed fewer changes in spectra after annealing compared with main-chain conjugated ones, which indicated better thermal stability.

In light of the rapid development of the electric power grid, the integrated application of distributed generation (DG) units can be considered as a key driver. Nevertheless, along with large number of DG units are connected into a distribution network, maybe different kinds of effects are accordingly induced. In particular, regarding the configured relay protection, its selectivity and sensitivity may be affected. In this paper, the penetration capacity analysis of DG considering overcurrent relay protection and flux-coupling type FCL is conducted. Under different fault conditions, the theoretical impacts of introducing DG on the fault current are investigated, and a flux-coupling type FCL is suggested to limit the fault current and potentially enhance the DG’s access capacity. Furthermore, the detailed simulation model of a typical distribution network integrated with the DG and FCL is created. From the simulation results, the employment of the FCL can effectively reduce the fault current’s negative influence on the DG, and improve the DG’s access capacity to a certain extent.

The gasochromic effect and its potential applications of tungsten oxide (WO3) thin films are introduced. The research progress in gasochromics mechanism of WO3films is reviewed and various mechanism models are summarized and discussed. The double injection model, oxygen vacancy diffusion model and localized water molecules model are extensively used to explain the gasochromic coloration of WO3films. A perspective on the gasochromics mechanism development of WO3films is tended to fabricate WO3film with single crystal and regular structure, which may simply the quantitative characterizations induced by the complicated structure. Elucidating gasochromics mechanism of WO3films not only helps to understand gasochromic coloration phenomenon well but also improves the performance of gasochromic coloration devices. It also accelerates the development of the relative science, such as gas detector, atom/ion transport material, surface catalysis of semiconductor, and so on.

Nowadays, serious environmental pollution demands enterprises to dispose waste water, especially for the printing, dyeing and nonferrous metal ones. Wastewater treatment technology is needed to improve urgently. Hydroxyapatite with large specific surface area and more microporous structure becomes a hot research topic in recent years for its strong adsorption ability. In this paper, the pollution situation, adsorption properties, adsorption mechanism, influencing factors and adsorption kinetic of hydroxyapatite are introduced.

We report difference frequency generation-based wavelength conversion in step-segmented quasi-phase matched (QPM) gratings. It is shown that both the pump bandwidth and the signal bandwidth are efficiently widened by adding the segment number of QPM grating and optimizing the poling period of the first segment and the period shifts between adjacent sections. Especially, flattop conversion efficiency response with peak-to-peak ripples less than 0.2 dB, which is very helpful to multichannel conversion in WDM systems, can be achieved simultaneously. For 3-cm-long waveguide, the signal conversion bandwidth and the pump bandwidth reach 166 nm and 0.88nm, respectively, meanwhile the maximum efficiency is-0.55dB.

Bandwidth enhancement and response flattening of wavelength conversion based on single-pass and double-pass cascaded second harmonic generation and difference frequency generation in step-segmented quasi-phase matched (QPM) gratings are investigated. For the same waveguide length, high conversion efficiency, flat response and broad signal bandwidth can be obtained simultaneously by optimizing the poling period of the step-segmented QPM structure. The conversion bandwidths in a 3-cm-long five-step-segmented waveguide are 134 nm for single-pass scheme and 132 nm for the double-pass one, respectively, which are both over the whole conventional band and long-wavelength band. The ripple on the matching response can keeps less than 0.2 dB as well.

As a new integration and packing technology, the low temperature co-fired ceramic (LTCC) technology attracts close attention for its excellent advantages such as high speed transfer characteristics, high reliability, miniaturization, etc. However, the sintering shrinkage of LTCC substrate always affects the practical effect of it. In this paper, the material characteristics, methods to control the sintering shrinkage of LTCC substrate and the development trend for the control methods are mainly overviewed. It is contributed to the research and application of LTCC technology.

A series of multiblock copolymers based on sulfonated poly (arylene ether sulfone) (bSPAES-SF) with highly rigid hydrophilic sulfonate blocks and flexible hydrophobic blocks were successfully synthesized by the condensation of sulfonated decafluorobiphenyl-terminated oligomers and the hydroxyl-terminated oligomers. The former oligomers were sulfonated by fuming sulfonic acid. The bSPAES-SF membranes with IEC of 1.26-1.70 mmol/g exhibited high proton conductivity, hydrolytic and dimensional stability.

This paper designs a single-phase inverter.Battery as a 12V DC input, and output for the 24V,50 HZ standard AC wave. The load is resistive.The power supply adopts the Boost booster and two full-bridge inverter transform. For the control circuit, the preceding Boost converter using tl494 chip control closed-loop feedback and for the inverter part, adopting the 6N137 to finish the optical coupling isolation.Then,through the DSP (TMS320F2812) to complete the output of SPWM modulation.And the modulated SPWM signal can drive chip IR211 conducting the full bridge inverter. Finally, through a low-pass filter output the standard sine AC inverter power.

The research progress in gasochromics of nano-structured WO3film is reviewed. Various fabrication methods of the nano-structured WO3film are summarized and compared. Recent gasochromic applications of the nano-structured WO3film is introduced. The gasochromic properties were significantly enhanced by applying nanostructures, resulting in faster responses, higher stability and higher optical modulation. A perspective on the development trends in fabrication of nano-structured WO3film and devices is also proposed.

To survive and prosper in a more competitive construction market nowadays, a company must strengthen the cost management of construction project. This paper expounds the present situation of the construction project cost management, existent problem in the process of the construction project cost management. Countermeasure analysis of perfecting the construction project cost management is discussed in respect to the management concept and method, information technology application, the people-oriented and sustainable concept of development.

As a new promising integrating and packing technology, the low temperature co-fired ceramic (LTCC) technology shows great potential in the microelectronics field and attracts great attentions for the scholars at home and abroad. In this paper, the practical application of LTCC is introduced and the emphasis is focused on the ways to the main problems in the application. As to this point, some advices are also given for the future development.

In this paper, the economic planning was conducted for the application of game theory in multi-objective area. The study and combined application of fuzzy comprehensive evaluation and analytical hierarchy process were also performed. On this basis, a portfolio selection model based on fuzzy comprehensive evaluation was designed and its application was simulated.

A photonic crystal model with circular resonant cavity is reported in order to achieve high efficiency and multi-channel filtration. Design a multi-channel filter based on its transmission properties. The distributions of the light energy of different wavelengths are given. As a result, the photonic crystal with circular resonant cavity has output efficiency of 75.5%99% and 100% when the wavelength is 1447nm1535nm and 1628nm. As the dielectric constant increases, the output wavelengths change. So, we can use this method to adjust the output wavelengths. Meanwhile, when the centre wavelength is 1447nm and 1535nm the multi-channel filter can output in different directions.

In this paper, fuzzy AHP to select the appropriate environment-friendly chemical mechanical polishing additives, and the rational design of the polish formulation. Practical application shows that the polish has a good anti-wear, the wear properties and anti-rust properties, stable performance ，and meets the needs of the chemical mechanical polishing, the rate of biodegradation more than 80%.

Aanalyzed the finite element static characteristics of the slender shaft deformation under the influence of cutting forces with different clamping ways in turning process by Pro/ENGINEER and Pro/MECHANICA software . Also analyzed the influence of clamping ways on the natural frequency of the slender shaft modal characteristics. The result indicates that the static analysis can be applied to the prediction of processing deformation with different clamping ways, the modal analysis can be applied to the calculation of the slender shaft natural frequency with different clamping ways. Can get a basic for reducing machining deformation and vibration, selecting cutting parameters, drawing up technological scheme reasonably.

The maleic acid ( MA )2-acrylamido-2-methylpropanesulfonic acid (AMPS) and acrylamide (PAMPS/AM/MA) superabsorbent copolymer was synthesized by aqueous solution polymerization with ammonium persulfate as initiator,N,N-methylene-bisacrylamide ( NMBA) as crosslinking agent. The influence of pH,mass ratio of AMPS to acrylamide ( AM) ,the amount of crosslinking agent and initiator,and reaction temperature on the absorption capability of water and salt solution were investigated. The results show that the water absorbency of the superabsorbent polymer prepared at the optimum condition in deionized water and in 0.9% NaCl solution is about 235 and 132g/g,respectively,and under the same conditions,the sample has more excellent water absorption and salt-resistance.

There are a lot of the potential security hazard in many rural breeding sheds. Some which are improper construction has jeopardized to people's lives and wealth. Peasants themselves mostly construct breeding sheds by the traditional empirical formula or the mimetic one in order to cost savings. Reasonable construction structure and correct building methods have a positive effect on reducing property loss and protecting people's safety.

An accurate finite element model is a necessity for analyzing the bridge's health status. The uniform design combined with response surface finite element model updating method is proposed in this paper. The error of data obtained from updating model is less than 3% by contrasting static load test data in Shihe Bridge.The result shows that the updating model has a good fit with the actual bridge.

Design a pilot experiment to purify biogas, remove and separate the impurities such as sulfur, water in the biogas to separate carbon dioxide and methane with the method of high pressure liquefaction. Pressure filling the methane into the cylinders after the purification and separation, which will be used for civilian or vehicle. A deep analysis to the process of pilot producing technology of the biogas purification compression and filling can solve the various practical technical problems that appear in the pilot, improve the equipment, technology and specific operations in the test, in order to facilitate industrial popularization and application.

s. There has been obvious urban growth in china over the last decades in the contest of China has achieved great economic development. This paper attempts to present some solutions after analyzing the problems of urban growth in China.

A novel series of copolymers containing fluorene units are synthesized by Sonogashira coupling reaction in mild condition. Benzene, naphthalene and anthracene are co-polymerized with ethynylfluorene, respectively. The structures are confirmed by NMR, Mass, Elemental analysis and GPC. The polymers have good thermal properties with glass-transition temperature of 90-155°C(Tg), and they have bandgaps from 2.21-2.77 eV. The results of photoluminescence in solid state show that introduction of huge chromophore could effectively suppress the formation of aggregates and excimers which typically cause red-shifted or new emission.

This paper designed an experimental system of microgrid which is composed of inverter-interfaced micro sources using droop control. DC power and IPM module were used to simulate the inverter-interfaced micro source, DSP2812 was employed to control the IPM. Load power sharing among different micro sources was achieved without communication. The experimental results have shown the correctness and validity of the designed scheme.

Nanohydroxyapatite (HA) with rod-like shape was synthesized by a cationic surfactant-templated method. Batch adsorption experiments were conducted to investigate its copper adsorption property from aqueous solution. The effect of initial copper ion concentration and contact time were studied. Results showed that HA adsorption capacity increased from 25.6 mg/g to 81.4 mg/g with the increase of initial copper ion concentration from 20 mg/L to 200 mg/L. Meanwhile, the removal efficiency decreased from 64.1% to 20.3%. Moreover, it also revealed that the removal efficiency of Cu2+increased with the increasing contact time and the initial adsorption process is rapidly increased within 15 min and the equilibrium was attained after 15 min.

Graphene was prepared by using hydrazine hydrate to reduce the exfoliated graphite oxide nanosheets in the aqueous colloidal suspension. The prepared graphene were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction analysis (XRD) and scanning electron microscope (SEM), respectively. The results showed that part of oxygen containing groups of the exfoliated graphite oxide nanosheets disappeared and the conjugated p bond recovered after reduction. The thickness and size of the graphene nanosheets decreased.

The preparation of graphite oxide is one of essential steps for graphene by oxidation reduction method. Graphite oxide was acquired from the oxidation of graphite by improved Hummers method and characterized by X-ray diffraction, scanning electron microscope, Fourier transform infrared absorbance spectroscopy and thermogravimetric analysis. It was showed that the graphite interlayer distance of graphite oxide increased for a large amount of oxygen containing functional groups. Shift and broaden of diffraction peaks were observed after oxidation and the original graphite peaks disappeared.

The project was identified as the college teaching research project of Hubei province in 2009. The project explores and practices the construction of new curriculum system of architectural drawing and CAD course actively under the work-integrated learning. The project pushes forward the course overall construction of architectural drawing and CAD course through the construction of teaching material, the reform of teaching methods, teaching techniques and examining modes. High quality teaching resource is provided and applicable talents cultivating quality is improved by the construction of excellent course. The operation ability of students is improved through the construction of training rooms, laboratories and training bases. Improving the talent training mode increases the engineering quality, practice ability and creative spirit. Through nearly four-year teaching practices, remarkable results are obtained.

The dynamic balancing of crank-slider mechanism was achieved with the guidance of the computer aided simulation-based optimization technique. Taking the reaction force of the rotary pair of connecting links and the input torque as optimization objective functions, the design optimization process was carried out with random-direction optimization method after determining the sensitive independent variables and their variation ranges based on the synthetical planning. The modal damping parameter of simulation model was optimized with the guidance of dynamic balancing experiment and the accuracy of simulation was also improved. Finally, by comparing the results from experiment and from optimization simulation, it is shown that optimization simulation could facilitate to instruct and implement the synthetical dynamic balancing for four-bar mechanism.

The oil/water interfacial properties and the stability of the emulsion of ASP flooding in Daqing Oilfield were investigated with the measurement of interfacial tension, interfacial shear viscosity,Zeta potential and turbidity of the oil/water system. The results show that, after NaOH has reacted with Daqing crude oil for a long time, the interfacial tension between the aqueous phase and Daqing model oil decreases. The absolute value of the Zeta potential of the surface of oil droplets increases. The changes of the interfacial shear viscosity between the aqueous phase and the oil phase do not appear to be obvious. The stability of O/W emulsion formed by Daqing model oil and the aqueous phase is enhanced. After NaOH has reacted with crude oil for 1d, the interfacial tension between oil phase and simulated water, Zeta potential and the stability of the oil/water emulsion become higher than that of the emulsion without NaOH. However, after NaOH has reacted with crude oil for 10 d and 30 d, respectively, the interfacial tension between oil phase and simulated water, Zeta potential and the stability of the O/W emulsion are lower than that of the emulsion with the same reaction for 1d.

The activity response of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), ATP enzyme activities ofEscherichia coliQ8,Bacillus subtilisL11, andBacillus cereusOL-1 following exposure to 1,2-dichlorobenzene (1,2-DCB) was investigated. The bacterial strains were treated with the different concentrations of 1,2-DCB. Results obtained indicated that SOD and CAT activities in the tested bacteria increased significantly in a concentration-dependent manner after different concentrations of 1,2-DCB were applied. The activity of SOD inB. subtiliswas stimulated and reached the highest level after treatment with 10 mg/L 1,2-DCB for 3 h. ForB.cereusOL-1, there was another stimulation of SOD activity after 1,2-DCB application for about 5 h The stimulation by 1,2-DCB showed a relative lag forE. coli. 1,2-DCB had an evident influence on ATPase activity in the three bacteria within a relatively short period. 1,2-DCB would have caused a certain oxidative stress on the three bacteria which may not only elevate SOD and CAT activities but also generate new SOD isozymes to antagonize oxidative stress. All indirectly reflect the existence of poisonous and harmful material in the environment , and can indicate the influence of pollution sensitivily. Therefore SOD, CAT and ATP enzyme activity in microbial body can be regarded as a molecular index of polluting ,which is feasible.

Nano-rods hydroxyapatite (HA) was synthesized by hydrothermal method using Ca(NO3)2·4H2O and H3PO4as precursors and cationic surfactant (CTAB) as a template. The effect of pH value and reaction temperature on the phase and morphology of HA were investigated. HA samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that high pH values resulted in high purity of HA. HA morphology changed from irregular round shape to nano-rod shape with the increase of the reaction temperature from 80°C to 120°C. The prepared HA was utilized as adsorbent to remove copper ion from aqueous solution. The adsorption results showed that nano-rod HA had a rapid Cu2+adsorption rate and good removal efficiency (>99%).

Composite microspheres of polystyrene and nanoFe3O4 particles were prepared through emulsifier-free polymerization with ultrasonic dispersion. The properties of composite microsphere were investigated by FT-IR spectrum, X-ray diffraction analysis, TEM, SEM and VSM. The determine results showed that Fe3O4particles prepared by coprecipitation in lab were about 7~8 nm and with a narrow size distribution and superparamagnetic characteristics. The composite microsphere of polystyrene and Fe3O4showed a diameter around 20~30 nm under TEM and SEM. The data of XRD indicated crystal forms of Fe3O4in the composite microsphere did not change. The XRD spectrum of composite microsphere was a overlap of Fe3O4crystal and amorphous polystyrene. The result of hysteresis curve indicated that the composite microspheres still had superparamagnetic characteristics.

The potential effect of 1,2-dichlorobenzene (1,2-DCB) on anaerobic microbial populations was investigated in a flooded wetland soil. Numbers of anaerobic fermentative bacteria (AFB), denitrifying bacteria (DNB) and hydrogen-producing acetogenic bacteria (HPAB) were numerated by three-tube anaerobic most-probable-number (MPN) methods with anaerobic liquid enrichment media. In anaerobic microbe groups, the changes of bacterium group were not the same. 1,2-Dichlorobenzene had the maximum influence on microbial groups of wetland soil at the initial pollution. In dealing with 14-35 days, bacterium groups in each processing soil have different amplitude bouncing back. In the experimental process, bacteria which produces hydrogen and acetic acid is most sensitive to 1,2-Dichlorobenzene. Hydrolysis fermentation bacteria second, and denitrifying bacteria was the smallest.

In this paper, green ceramic tapes are joined together by adhesive based lamination technique. The effects of adhesive concentration, pressure on the lamination and sintering temperature on the laminate are mainly discussed. The parameters are also optimized. It was shown that the effect of adhesive concentration and pressure on the lamination is obvious and the effect of sintering temperature is not big. 10 layers of cordierite tapes can be laminated under 2MPa with a dwell time of 3min with PVA by adhesive based lamination. The adhesive based lamination can be used to be an alternative of thermo-compressive lamination.

In order to improve the calorific value of biological oils and reduce its corrosiveness, magnesium oxide and calcium oxide are added as reactants and carboxylic acid used to induce separation. This paper investigates the effects of using different magnesium oxide/calcium oxide molar ratios on the calorific value of bio-oil. Analysis of the results show that adding magnesia alone improves the quality of the water phase and the calorific value of the bio-oil. A MgO/CaO mole ratio of 9:1 improves the pH of the bio-oil from 2.5 to 6.5 and achieves a phase separation of m (oil phase) / m (water phase) = 75:25, as well as increasing the heating value of the oil by 19.29% from 16.819 MJ/kg to 20.063 MJ/kg. Note that MgO/CaO mole ratios with calcium oxide ratios greater than 9:1, only slightly increase the heating value of bio-oil overt the raw non-separated oil.

The moving object detection of the video image is the basis of sequence image analysis, and it is the research hot issue of today’s foreign and domestic scholars. For detecting the moving object from the scene image in time, a detection algorithm of video moving object based on Gaussian mixture models is proposed in the paper. The pixel values are seen as the combination of the foreground Gaussian distribution and the background Gaussian distribution, and the background estimation and the adaptive background update will be put up. The statistical number of the foreground pixel of the current frame determines whether the light has a larger change, and it combines with the frame-difference method to detect moving object. The experimental results show that the algorithm can quickly and accurately establish the background model and accurately segment the foreground object.

A new type of the two dimensional photonic filter which includes two in-line waveguides and a circular ring resonant cavity is presented in this paper. By using Finite Difference Time Domain (FDTD) method, we calculated and demonstrated the broadband frequency response of the filter and analyzed the impact of changing the dielectric constant of the inner rods on the transmission characteristics of the filter. Compared with the transmission characteristics of a micro-cavity,our numerical results show that such a filter can transmit multiple narrowband signals simultaneously. The number of the passbands of the filter increases with the rings of inner dielectric rods in the cavity. The center wavelength of the passbands can be tuned by adjusting the dielectric constant of the whole rods and inner rods without changing the size of the cavity..

The structure of two-dimensional (2D) photonic crystals (PCs) with square lattice is proposed in this paper, and researches on characteristics of photonic band gap (PBG) are conducted using finite difference time domain (FDTD) method, then the effects of the dielectric constant and the radius of dielectric rods on band gap are analysed, dielectric rods in air (rods/air). The research results indicate that in the case of TE and TM polarization mode, the difference value of dielectric constant of medium and dielectric rods affects forming PBG.The band gap broadens with the difference value increasing. Whats more, the complete band gap (CBG) appears in range of large rods radius structure when dielectric constants of rods are smaller than that of medium.

When solving facility layout problem for the digital workshop to optimize the production, the traditional genetic algorithm has its flaws with slow convergence speed and that the accuracy of the optimal solution is not ideal. This paper analyzes those weak points and proposed an improved genetic algorithm according to the characteristics of multi-species and variable-batch production mode. The proposed approach improved the convergence speed and the accuracy of the optimal solution. The presented model of GA also has been tested and verified by simulation.

Sulfonated poly(arylene ether sulfone)s (SPAES) with different sulfonation degree (DS) were synthesized through aromatic nucleophilic substitution polymerization, and subsequently used to prepare ultrafiltration membranes by the phase inversion method. The performance and morphological structures of the prepared SPAES membranes were investigated and evaluated for ultrafiltration applications. With DS of 3%, the prepared ultrafiltration membrane showed the largest water permeability with bovine serum albumin rejection over 99%.

According to compressor working conditions and compressor lubrication performance requirements in this paper. It use a polyether and dioctyl sebacate as the base oil, and adding a variety of functions of composite additive deployment, Develop a kind of a compressor oil used on compressing and filling sulphur dioxide (SO2) in the supercritical condition. Experiments show that the developed compressor oil not only meets the performance requirements of compress and filling SO2 in supercritical condition, but also has a very strong adaptability condition.

Lamination of green ceramic tapes is one of the most important technological processes in the manufacturing of multilayer ceramic devices and it has determined influence on the quality of the devices. Therefore, choosing proper lamination technique is very important to a designed structure. The development of lamination techniques of green ceramic tapes is of great significance for the electronic communication industry and it has become a hot spot in the research. In this paper, the main lamination techniques in the present research and practice are overviewed. As to the development prospect and direction of the lamination of green ceramic tapes, the own opinions are given on the basis of lamination study in recent years.

Er3+/Nd3+ co-doped oxyfluoride tellurite glass was prepared successfully by the conventional melting method. Luminescent properties of Er3+/Nd3+ co-doped oxyfluoride tellurite glass were studied in the NIR spectral range. There existed strong absorption peaks of Nd3+ions at 580 nm, 743 nm, 800 nm and 874 nm and obvious absorption peaks of Er3+ions at 580 nm, 743 nm, 800 nm and 874 nm. Er 3+ /Nd 3+ co-doped glass performed excellent fluorescence properties at 1.53 μm and 1.06 μm. There existed energy transfer between Nd3+ ions and Er3+ ions, that is 4I9/2 (Er 3+ ) + 4I9/2 (Nd3+) → 4I15/2 (Er3+) + 4F5/2 (Nd3+). Owing to the energy transfer from Er3+ ions to Nd3+ ions, multi-phonon relaxation or up-conversion radiations, emission intenisty of Er3+/ Nd3+ co-doped glass was weaker than that of Er3+ single-doped glass at 1.53 μm.

Through in-depth research and analysis of coal production process, the concept of "lean mining" is puts forward in this paper, and Lean mining system is structured which includes objective, code of practice, technical solution, operation foundation and circumstance basis. Finally the theory is carried out in coal mining practice activities, by which the working efficiency is improved and the profit of enterprises is increased, by which the clean production and lean mining are achieved.

Polymers based on sulfonated multiblock copoly(arylene ether sulfone)s were prepared successfully by the reaction between a phenoxide-end-capped hydrophilic oligomer and a fluoride-end-capped hydrophobic oligomer. They were subsequently used as the starting material to prepare crosslinking membranes (cbSPAES) using P2O5 as the crosslinking reagent during the membrane casting procedure. The fundamental properties of the resulting crosslinked multiblock membranes, such as water uptake, size change, proton conductivity and hydrolytic stability were investigated in details.

The combination of ship gas turbine working at special environment, this article pass through the study of base oil and composite additive, developed an application marine environment of the ship gas turbine reducer lubricants. According to comprehensive performance assessment, the product has excellent high-temperature anti-oxidant, anti-wear, corrosion inhibition and anti-foam performance. The indicators have reached the requirements. With the development of China's ship gas turbine technology, especially UGT25000 ship gas turbine technology is imported from Ukraine, as well as the recent introduction of the GE LM2500 + G4 Series of technology for power plant of construction. The localization of the supporting facilities are growing louder, there is a strong market rigid demand. Ship gas turbine must be one of the trends of the development of Marine Power. Ship gas turbine due to light weight, small size, stand-alone power, fast start; less pollution, vibration, high thermal efficiency and gas initial temperature, it is easy to realize the cascade of energy use, economy, received widespread attention and application. China's ship gas turbine of modification and design draw the aero-engine, ship gas turbine is a continuous rotation of the impeller mechanical heat engine; it is mainly composed by three parts of the compressor, gas generator and gas turbine. Ships generally use diesel (fuel have heavy trend, the heavy diesel oil or No. 200 heavy oil will be used) as fuel, in order to adapt the ship gas turbine, ship gas turbine need to transform, particularly its' lubrication system [1]. Foreign aviation gas engine lubricants are based on the U.S. standard as a reference, due to the differences of using purpose and fuel, so that the ship gas turbine oil has different requirements. Since ship gas Turbine Technology started late in China, the ship gas turbine core engine technology patents come from the United States, Russia and Ukraine, so the use of gas turbine lubricants, as well as matching accessories and other standards, which are more or less directed reference to refer to the original foreign standards [2,3]. We have never been established using standard ship gas turbine oil. Ship gas turbine apply to the special conditions (high humidity, salt spray, etc.), the ship gas turbine of lubrication has a higher demand, particularly for the ship gas turbine reducer of lubrication. The ship gas turbine reducer work in the low-speed heavy-duty and high-speed heavy-duty , high strength, high shear conditions, how ensure the ship gas turbine reducer to normal work is very important at high load conditions. In this regard, developing of a ship gas turbine reducer lubricant is very necessary.

Using the method of THERPand HCR this paper studies post- accident human error events of mine hoisting system which reflects accident consequence seriousness and accident treatment urgency. It ascertains cognitive failure probability P1, non-response probability P2 and the failure probability P3, and quantities and appraises degree of human reliability. Finally this paper analyzes causes of hoisting accident human errors ,by which probability human error can be reduced to the lowest limit.

The research aimed to investigate the ecotoxicity of nano Ni(OH)2 from the leakage of lithium battery leakage on Carassius auratus. Choosing Carassius auratus as test biology, Researched on Content of free radical in the liver, SOD, GST and GSH. The main findings are as follows: As proved by EPR spinning trapping, nano Ni(OH)2 may induce the generation of hydroxyl radical in the body of Carassius auratus, which may impose significant impact on such active oxygen scavenging systems as SOD, GST and GSH. Nano Ni(OH)2 as concentrated in the fish body may incur redox reaction, and produce redox metabolic intermediate. The study provides the theoretical basis for safety problems might be incurred by mutual action between nano-material and organisms. As one of important toxic mechanisms of nano Ni(OH)2 to Carassius auratus, oxidative stress mechanism requires further study.