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SnO2 nanocrystalline thin films (NCTFs) with high quality and low infrared emissivity were synthesized through a simple hydrothermal process designed by orthogonal design theory. The microstructure, morphology, photoluminescence (PL) property and the infrared emissivity (IRE) property of as-prepared products were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), fluorescence spectrophotometer, and infrared spectroradio meter (ISM) respectively. The results show that two emission peaks are observed in PL spectra, which can be deconvoluted by Gaussian profile fitting into four emission peaks centered at about 380, 420, 460 and 520 nm respectively. The influences of crystallinity, concentration of particles and resistivity on IRE were systematically investigated, revealing that the better crystallinity, higher particle density and better conductivity are favorable for lowering IRE.

Hexagonal NaYF4:Yb3+/Er3+ microsheets were successfully synthesized via a hydrothermal method assisted by sodium oxalate as a shape modifier. XRD, FE-SEM, TEM and SAED have been used to study the morphologies and crystal structure of the products. The effects of the pH values on the crystal structure, morphology and size were discussed. The hexagonal NaYF4:Yb3+/Er3+ microsheets show characteristic upconversion fluorescence at green (521-540 nm) and red (630-680 nm) corresponding to the 4f-4f transition of Er3+. The green and red emission intensity for microsheets has a great increase compared to that for hexagonal microspheres, and the intensity of the green emission is greater than that of the red one.

The wood flour/HDPE microcellular foamed composites were prepared by means of torque rheometer. The effect of different wood flour content on mechanical properties and foamed behavior were studied. Results showed that the tensile strength and flexural strength of microcellular foamed composites first increased then decreased and the notched impact strength decreased with addition of wood flour, this was consistent with non-foamed composites. The density of composites increased and the density of foamed composites was less than non-foamed composites. With increasing wood flour content, the cell diameter of foamed composites first decreased then increased. When the content of wood flour was 40%, the cell diameter of the composites obtained the minimal value.

A novel galactoside derivative (1) incorporatingp-nitroaniline (p-NA) as chromophore has been synthesized and used as a cascaded chromogenic enzyme substrate for the detection of β-D-galactosidase, which was characterized using UV,1H NMR,13C NMR and MS spectra. A plausible mechanism for the release ofp-NPA from the enzyme substrate 1 was proposed.

An enzyme substrate, 4-nitrophenyl-β-D-ribofuranoside, was synthesized from commercially available 1,2,3,5-tetra-O-acetyl-β-D-ribofuranoside andp-nitrophenol using an efficient glycosylation. The synthesized substrate can fulfill the requirements for the detection of ribofuranosidase.

First, a fire test on concrete beams was carried out. Then after the static test of simply supported beam, the phenomena of simply supported beamsbefore and after fire were compared in order to determine the damage degree ofmechanical property. Finally, the width reduction method was proposed tocalculate the stiffness of beam after fire. And the formula applied toengineering practice was also deduced. The comparison of calculation resultsand experimental results was in a good agreement.

To solve the problem of difficult process data management caused by the unstable process in complex products assembly, by introducing the workflow technology, a method of multi-dimensional assembly process data management based on workflow was proposed. The evolution model of assembly process information was established from the perspectives of granularity, cycle and version. On this basis, the assembly process information organization model based on workflow was put forward. The detailed description of the management method of process data’s evolution in the perspectives of granularity and cycle was presented. The feasibility of proposed method was proved by actual engineering applications.

GH169 superalloy steel was coated by hot-dipping in a molten aluminum bath, and then diffusing annealing at 950 °C for 2h. The cyclic oxidation behaviors of the hot-dipped aluminized steel and GH169 were tested at 900 °C for 24 cycles using resistance furnace. Morphology of surface and cross-section, element distribution of the oxide scale were characterized by SEM and EDS. The results showed that protective Cr2O3 and Al2O3 oxide scales were formed on GH169 and aluminized steel after 24 cycles, respectively. The inner oxidation was found on GH169 after 24 cycles. It was composed of surface Al2O3 oxide film, outer Al-rich layer scattered with NiAl phase, and inner NiAl layer on aluminized steel after 24 cycles at 900°C.

With the development of modernization, how to implement the unified management and real-time monitoring becomes a key problem. With the requirements of Wuhan Heavy Duty Machine Tool Group Corporation, a CNC online monitoring system based on FANUC and Siemens system has been developed.

Magnesium alloy is known for its light weight and high strength. Due to the desirable properties, Magnesium alloy is required in the fields such as transportation from the energy-saving point of view. The development of forming methods is especially highly expected. In order to manufacture productions of high dimensional accuracy with good surface finish without defects, it is important to evaluate tribological characteristics of forging of Magnesium alloys. In this paper, the friction coefficients were measured by the ring compression test. It compresses a ring specimen between parallel tools and is the method for the friction coefficient by the rate of change of the inside diameter. The friction coefficients of several kinds of Magnesium alloys have been evaluated depending on temperature, compression speed, and the kind of the lubricant here.

The mechanical behavior of plastic material is dramatically sensitive to temperature. An method is proposed to predict the mechanical behavior of plastics for cars, ranging from low-temperature low temperature ≤-40°C to high temperature ≥80°C. It dominates the behavior of plastic material based on improved constitutive model in which the parameters adjusted by a series of tests under different temperatures. The method is validated with test and establishes the basis for research and development of plastic parts for automobile as well.

Plastic materials are widely used in automobile manufacturing, and they have different mechanical characteristics at high and low temperature, which has a major influence on automobile safety. This paper mainly studies the relationship between elastic modulus and yield strength of plastic materials at high and low temperature, in order to predict the elastic modulus by the yield strength. On this basis, the values of the parameter of the constitutive model will be predicted to obtain the constitutive equation. The method meeting the precision is validated by the experiments. The method decreases experimental working, and provides technical support for product development as well.

At present, the uneven in the degree of new energy automotive industry informatization, although all have set up their own ERP system, but each enterprise information system lack of coordination, information isolated island in serious condition, and the degree of information is serious inconsistent. But each enterprise’s investment in informatization construction is long-term, very strong desire for urgently establish recognition system. This paper analyses the basic principle and the classification of RFID system, discusses the application of RFID in the new energy automotive production line, studies the problems and countermeasures faced by RFID technology.

The new energy vehicle intelligence anti-collision system, is a new energy vehicle safety assist device , can timely and intuitive display the obstacles of new energy vehicles’ around, help the driver to remove the dead angle of vision and the flaw of sight, in case of emergency, intelligent control of brake. The research of this paper is that new energy vehicle intelligent anti-collision system of a kind of low cost, high precision, miniaturization and with a liquid crystal display and sound , light alarm function center on the single chip AT89S52 , the product is developed according to the principle of ultrasonic ranging, using the temperature compensation technology, power on self-checking technology and optimized hardware and software technology, sent the measured results to the liquid crystal display, in case of emergency, intelligent control of brake, improves the safety and efficiency of new energy vehicles.

A novel distributed fiber optics sensor used for road vehicle information collection system was proposed. Optical fiber was fixed on the road surface to be used as the sensing media. The vehicle information such as speed, vehicle type, vehicle weight and traffic flow can be obtained. To increase the sensitivity of such sensor, an optical Fabry-Perot (F-P) fiber interference was used. Sensing optical fiber was designed to be with a metal coating for fiber protection and high performance. Experiment results show that such distributed fiber optics sensor may be with a high performance in transportation area without digging when it is installed on the road surface.

wireless sensor network (WSN) nodes based on self-powered function have distinct advantages of battery free and no needing line power, used successfully in lighting control system of modern building. Energy balance and power balance are considered in design of battery-free sensor module. Average current in self-powered wireless sensor module was evaluated based on viewpoint of power balance. Energy balance was discussed in building lighting control system based on special energy storage of super-capacitor. Self-powered wireless sensor module is based on energy harvesting from ambient circumstance. In lighting control system of modern building automation battery-free sensor module has been successfully applied for maintenance and energy saving. The application of battery-free sensor module was analyzed.

Cathode samples of titanium-based nanodiamond field emission were prepared by electrophoresis dispersed solutions in different formulas. Observe the surface and structure of the coating by using metaloscope, microscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD); Test the field emission characteristic after annealing; Analyze the relation between the samples’ light photos and the uniformity of coating; Discuss the mechanism of the improved field emission characteristic after annealing. Under the same conditions the surface uniformity of diamond coating prepared by isobutyl alcohol is best,it is the minimum threshold electric field emission, 5.5 V/μm, the current density can reach to 85μA/cm2 at the field of 15V/μm. Field emission characteristic and luminescence could be best after annealing.

This paper presents the method of 3D human body data acquisition based on 3D scanning and the non-contact fit evaluation of clothing based on the distribution features of residual space between clothing and human body. A Kinect camera is employed to collect point cloud data. The points cloud is treated by Geomagic for noise reduction and surface reconstruction. By analyzing the residual space between clothing and human body, the fit distribution of scanned clothing can be achieved. The fit evaluation will make contributions to clothing design, online sales of clothing and virtual try-on.

The CMA cost function is simplified to meet the second norm form, and a new CMA blind equalization based on quasi-newton algorithm is proposed. Since the CMA cost function does not meet the second norm form, it is difficult to use quasi-newton algorithm to update the blind equalizer directly based on the cost function of CMA. If the cost function is simplified to meet the second norm form, it can use quasi-newton algorithm to update the blind equalizer directly. Thus, the convergence rate and convergence precision of CMA blind equalization can be improved effectively. Simulation results under the acoustic channels show that CMA blind equalization with quasi-newton algorithm based on the simplified cost function has faster convergence rate and less steady state residual error, which has practical value in the blind equalization of fast time-varying underwater acoustic channels

The Aerodynamic Performance of 2D Savonius Rotor in Ground Effect is Numerically Simulated through Solving Unsteady Compressible RANS Equations and the Standard k-ε Turbulence Model. the Calculation Results Indicate that the Ground Effect Influences the Starting Performance and the Power Output. the Optimal Height between the Ground to the Lowest Part of the Rotor is 0.4 Times Rotation Diameter, at which the Starting Performance is Optimal. the Ground Effect also Increases the Power Coefficient and the Tip Speed Ratio Corresponding to the Maximum Power Coefficient. when Determining the Rated Tip Speed Ratio, the Fluctuation of the Torque Values and the Power Coefficient with Different Tip Speed Ratio should be Synthesized.

To study the geometrical and electronic structure of 15R-SiC polytypes, the lattice parameter, band structure, density of states (DOS) and charge density of 15R-SiC are calculated by using density functional theory based on the plane wave pseudopotential approach, and electronic structure and ground properties of 15R-SiC are investigated by the calculated band structure and DOS, the results show that 15R-SiC is an indirect band gap semiconductor, with calculated indirect band gap width being 2.16 eV and band gap dependent on Si 3p and C 2p states. While charge density results show that Si-C bond is a hybrid bond semiconductor strong in covalent bond and weak in ionicity, characterized by intense sp3 hybrid characteristics, which is in accordance with the experimental results. The above mentioned results are considered as theoretical reference for design and application of SiC polytype materials.

Along with the gradual increase of intelligent and information equipment on the battlefield, the fierce electronic warfare between the enemy and us makes the electromagnetic environment of the battlefield more and more severe. The anti-jamming capability of conventional frequency-hopping communication system is inadequate such as anti-dynamic interference, anti-intercept, etc., thus posing a serious threat to normal military communication. Moreover, currently the data transmission rate of frequency-hopping system is fairly lower, and cannot meet the increasing large-capacity real-time data transmission requirements. This article deeply researches self-adaptive MIMO-OFDM technology and frequency-hopping communication technology, and introduces the research on frequency-hopping communication technology based on self-adaptive MIMO-OFDM system. The research shows that self-adaptive MIMO-OFDM-based technology can effectively enhance the frequency-hopping communication system’s anti-jamming and anti-intercepting capability, and improve the data transmission rate.

In this paper, combined with the results of SI building system, describes the systematic research points SI building core technology. With built-in technology as an example the construction of residential projects, built industrialized parts integrated technology systems and implementation of the project conducted a comprehensive description and analyzes the advantages and disadvantages.

The motion characteristics of microbubble in the water or solution have important influence to crystallization process. In the paper, the movement equation of single bubble was modeled based on force equilibrium, the mechanics factors influence on the single bubble motion were discussed, and the velocity of microbubble was analysed with the different bubble sizes. The results show that the velocity of microbubble in static water is increasing with time increasing, the influence of virtual mass force and Basset force caused by the acceleration on the velocity of microbubble must be considered in the initial stage of microbubble motion. In the processes of microbubble motion, compared with constant microbubble radius the variation laws of velocity fluctuations mean with microbubble radius changing are uniform.

The photometric, electrical, thermal and life features of LEDs are highly dependent on each other. All these factors should be considered together in order to optimize the operating point of LEDs. A thermal life theory about LEDs is developed. This theory shows the inner inks among photometric thermal and 1ife features of a LED. A life prediction model of LEDs and the relationship between output luminous flux and lifetime was found out by this theory. The life of LEDs can be predicted and find the proper operating point, at which the LED will generate the maximum amount of luminous flux in its total life cycle.

In computer-aided design meteoric rise in the field of architectural design , computers have become an important tool for architects work. The use of computers has changed a lot of work methods. Updated key architectural design methods, using new thinking tools by updating to assist architectural design ideas that can help us find new ways to architectural creation. We know that there is a convenient three-dimensional computer modeling, easy to modify and intuitive physical display. The concept of the future whether to play a vital role in the concept of the method, and eventually will change and affect the building design and construction. By using computer-aided design and design examples to make computer-aided design method building construction design process , the use of further explanation.

The saliva pregnancy test apparatus is dependent on manual operation to obtain results by observing the saliva crystallization image with complex operation, how to recognize the saliva crystallization image quickly and accurately has become an important research topic. In this paper, an image recognition method on the crystallization of saliva is proposed. Firstly, gray processing on the original image, improved Otsu method is used to select the threshold and binaryzation. Then the proportion of black and white pixels is calculated to identify saliva crystal images with the percentage values. The results show that the method is simple and treatment results are accurate.

In order to predict the life of white LED in a short time, three groups constant stress accelerated life tests were conducted by increasing the working current. Life information of LEDs was obtained by using bilinear regression method. The numerical results indicated that the scheme of the accelerated life tests was correct and feasible. The estimation of the LED life was accurate by acceleration parameters．

Geometric structure and electronic structure of wurtzite ZnO have been calculated adopting first principle plane wave ultrosoft pseudo potential method based on density functional theory, and band structure, electronic state density, differential charge distribution of ZnO have been subjected to systematic analysis, the results of which show that ZnO is a type of wide gap and direct gap semiconductor, with conduction band bottom and valence band top at the point Γ of Brillouin zone and valence band top showing obvious triply degenerateΓ7、Γ9、Γ7,while conduction band bottom beingΓ7. electronic structure calculation shows that Zn 3d narrow orbit between-6 and-4 eV has been fully filled with electrons and that O 2p wide orbit between-4 and 0 eV has also been fully filled with electron. In addition, charge density calculation shows that ZnO is metal oxide semiconductor with hybrid bond characterized by high ionicity and low covalent bond, accordingly, the above mentioned findings are superior to value of calculation mentioned in some documents.

SiC poly-type geometric structure, electronic structure and energy have been subjected to systematic study based on first principle calculation method given in density functional theory. After calculation, the energy results show that 4H-SiC system energy is the lowest and stablest, while 2H-SiC system energy is the highest and unstablest; the calculation results of the band structure show that six SiC poly-types are indirect wide band gap semiconductor, with valence band top on point Γ of Brillouin zone, conduction band bottom on point M of Brillouin zone; with the increase of hexagonality, the energy gap and valence band width are gradually getting smaller, with largest splitting of orbital energy level on 2H-SiC valence band top, reaching to 0.122 eV, while the splitting of orbital energy level on 8H-SiC valence band top is the smallest, with 0.027 eV only.

Computational Fluid Dynamic (CFD) was used to investigate gas-liquid two phase flow regimes for the inclined wells. The simulation results were compared with the Taitel chart. A good agreement between the prediction and the Taitel flow regimes shows that CFD method can reasonably predict flow regimes in the inclined well. Another further study was conducted to explore the influence of flow rates and inclination angle on flow regimes. The results show both of flow rates and inclination angle have a significant effect on flow regime transition.

0Cr18Ni10Ti stainless steel was coated by hot-dipping in a molten aluminum bath, and then diffusing annealing at 950 °C for 2h. The high temperature isothermal oxidation behaviors of the hot-dipped aluminized steel and 0Cr18Ni10Ti steel were tested at 900 °C for 100h using resistance furnace. Morphology, and phase composition, element distribution of the oxide scale were characterized by XRD, SEM and EDS. The results of hot-dipping Al showed that slow weight gain was occurred, because of the formation of compact and dense Al2O3oxide film during the oxidation process. The result of 0Cr18Ni10Ti showed that instable oxidation occurred, and a significant weight gain was obtained. The oxidation behavior of the steel is subject to breakaway oxide nodules on the surface. The oxide nodules are composed of two layers. Outer Fe-rich layer is susceptible to spallation and inner layer is loose.

Hull deformation directly influences the working condition of propulsion shaft, so that the reasonable and accurate calculation of deformation is the basic content of research on ship propulsion system. This paper, basing on a large container ship, built up an integrated finite element model of the hull with the propulsion shaft. By employing inertial relief method, the hull deformation at place of shaft supports is calculated under different loading conditions. The results are compared with those from a hull FEM model without shaft. Some valuable conclusions are made from the results analysis.

A detailed theoretical study of electronic structure and optical properties of GaN under pressure was performed by the first-principles calculations of plane wave ultra-soft pseudo-potential method based on the density functional theory (DFT). The results indicate that Ga-N bond length becomes shorter and the valence bonds shift towards the low energy while the conduction bands towards high energy, the band gap becomes wider with the pressure increasing, and theoretical studies explained the relationship between the band edges, energy gap of GaN and pressure. In addition, the peak in band was cracked slightly, and the Ga 3d-N 2p hybridization was enhanced.

GH169 was coated by hot-dipping in a molten aluminum bath, and then diffusing annealing at 950 °C for 2 h. The high temperature isothermal oxidation behavior of the hot-dipped aluminized alloy and GH169 was tested at 900 °C for 100 h using resistance furnace. The surface morphology and phase composition of the oxide scale were studied by SEM and EDS. The result of high temperature oxidation test showed that oxidation curves of hot-dipped aluminized steel and GH169 followed parabolic law at 900 °C for 100h and the hot-dipped aluminum present more excellent anti-oxidation. A dense film formed on GH169 mainly composed of Cr2O3and TiO2while on hot-dipped aluminized steel is Al2O3.

In this research, chrysotile nanotubes (ChNTs) were synthesized by the hydrothermal method. Synthetic ChNTs were characterized using XRD, SEM, TEM and N2adsorption-desorption. Adsorption technique was applied for removal of Sr (II) and Nd (III) from aqueous solution by using ChNTs. The process had been investigated as a function of pH and temperature. The experimental data were analyzed using equilibrium isotherm models. The adsorption isotherms are fitted well by Langmuir model, having a maximum adsorption capacities of 102.56 mg·g-1for Sr (II) and 47.44 mg·g-1for Nd (III) at 298 ± 1 K. FTIR and XPS techniques were employed to investigate possible adsorption mechanism.

In this paper, the prenyl alcohol was catalyzed synthesized in anhydrous system by using isoprene and dichloroacetic acid as raw material and sodium dichloroacetate as catalyst. The obtained product was mainly characterized by FT-IR and GC. Furthermore, the olefine acid ratio, reaction time, amount of catalyst, saponification time and NaOH concentration were systematically investigated during the work. The optimum reaction conditions are as follows: the olefine acid ratio was 1:2, reaction time was 2h, amount of catalyst was 1.8g, saponification time was 2h and NaOH concentration was 4mol/L, the yield of prenyl alcohol was 45%.

The present work investigated the transfer regularity of Fe (III)-Al (III) in the extraction of indium from waste TFT-LCD. The result showed that Fe (III)-Al (III) is extracted by D2EHPA in the extraction process of indium. Therefore by controlling extraction time, the amount of iron and aluminum declined in the extractant. During extraction in D2EHPA, the content of iron and aluminum was affected by acidity and coexisting anions. The iron and aluminum accumulating in D2EHPA could cause aging extractant, which made an impact on loading capacity of the extractant.

The feasibility of wood-plastic composite (WPC) and efficiency of impact strength improvement by toughening agents were discussed using waste polypropylene (PP) from e-wastes as experimental materials. The researching results indicated that it could be used in manufacturing wood-plastic composite while the impact strength of waste PP decreased by 47.3% comparing with new PP. Adding polyethylene octene elastomer (POE) and styrene-butadiene-styrene (SBS) could effectively enhance the impact strength of WPC. When adding 15% of POE and SBS individually, the impact strength increased by 113.2% and 43.4%. The modulus of rupture (MOR) and modulus of elasticity (MOE) lowered when toughening agents were added, which should be made into consideration in practical application according to the property of materials comprehensively.

This paper introduces a way to build a model for a new kind of solution dehumidifier, and discusses the way to construct TRNSYS components for different kinds of solution dehumidifiers, and the factors that have the most important influence on the precision of the component have been presented. This paper contribute to the component library of TRNSYS, which will make TRNSYS capable to simulate THIC system.

A series of batch mesophilic anaerobic digesntion were conducted using an automatic methane potential test system (AMPTS) and the kinetics of methane production was also discussed using modified Gompertz equation, Logistic function, First-order kinetics model and Transference function, respectively. The results showed that the kitchen waste solid residual was of high biomethane potential, and the maximum specific methane yield was obtained 585 NmL/g TS at inoculums substrate ratio (ISR) 2:1. All of the four models could appropriately fit the accumulative methane production in steady state (R2>0.95), where the 1st-ordre model and Transference function were relatively much better (R2>0.99) than the other two models. The maximum methane production and maximum methane production rate obtained from the Transference function were 569.32 NmL/g TS and 150.22 NmL/g TS day; the maximum kinetics constant obtained from the 1st-order model was 0.272/day; the lag time (λ) was basically negligible in all the cases. These parameters were quite close to the experimental results.

The new fluidization method of liquid-liquid circulating fluidized bed proposed for ice slurry production was investigated experimentally. Multiple small water-drops were formed in another immiscible liquid coolant by a single-nozzle atomizer and frozen in the fluidized bed by direct contact heat transfer. Experiments were conducted to research the dynamic behaviors of jet and drops formation in the ice making system by the high resolution digital camera and image processing. The photos of jet development, breakup and drop formation were obtained. The affects of the shape of jet breakup, jet length and its surface fluctuation on drops size were revealed. The range of drop sizes and the sloping extent have always increased with the jet rate increasing. And varying jet shape directly results in the jet breakup into droplets under different time and test conditions, so the variation laws of the jet shape contribute most to the quality of the liquid drop, such as drop size distribution.

Highly ordered TiO2nanotube arrays (NTAs) modified with Pt nanoparticles (Pt/TiO2NTAs) have been prepared by anodization of Ti foils followed by electrochemical deposition and employed to improve the performance of the low-overpotential determination of H2O2in solution. Morphologies of TiO2and Pt/TiO2NTAs were observed by SEM and TEM. The electrochemical behaviors of TiO2and Pt/TiO2NTAs were compared by cyclic voltammograms (CVs) in phosphate buffer solutions in absence and prensence of 10 mM H2O2, which showed that Pt nanoparticles can enhance the electrochemical activities of TiO2NTAs and achieve low-overpotential determination of H2O2. Amperometric method with an applied potential of-100 mV was used for H2O2detemination, which demonstrated a good H2O2sensing with sensitivity of 5.4 μAcm-2mM-1.

Carbon-coated SnO2 particles (SnO2/C) were first synthesized by hydrolysis of SnCl4 in the sucrose solution at 85 °C, where sucrose is the carbon source. These particles were then mixed with La0.7Sr0.3MnO3 (LSM) through a suspension stirring process to form SnO2/C-LSM composites. The results of SEM and EDX show that LSM particles are distributed in SnO2/C uniformly. Galvanostatic discharge-charge measurement was used to test the electrochemical performance of SnO2/C and SnO2/C-LSM. It was found that the specific reversible capacity increased from165 mAh/g for SnO2/C to 270 mAh/g for SnO2/C-LSM after 50 cycles. This improvement may be attributed to the lower charge transfer resistance and higher electronic conductivity resulted from introducing LSM.

Low-grade, finely disseminated refractory sulfide gold ores associated with high arsenic are ubiquitous resources all over the world. Since heap bio-oxidation is an economic and promising biotechnology to recover gold, low grade, high organic carbon and arsenic bearing gold ores from Zhesang Mines in China were chosen for this purpose to study the key factors that would affect biooxidation. Pyrite and arsenopyrite (particle size 0.002-0.22 mm) were the main minerals from Mineral Liberation Analysis (MLA). Column biooxidation and cyanidation of mineral size < 10 mm were evaluated for its potential for gold extraction. Results showed that temperature was the main factor influencing sulfide oxidation. 58-67 % of sulfide was oxidized at 35-45°C after > 240 days of biooxidation with mixed mesophiles, while higher sulfide-S dissolution (77%) was obtained at 60°C. Sulfide-S fraction distribution revealed higher mineral decomposition, finer fractions and eventually higher sulfide oxidation at 60°C. Jarosite and scorodite were found from the residues at 60°C by SEM and EDX, which implies higher temperature accelerated arsenic precipitation. No elemental sulfur was detected during the biooxidation at 35-60°C. After bio-oxidation, column cyanidation was successfully demonstrated recovery of gold from the residues, with gold extraction rate reaching 66%.

The conformal coating phosphor converted light emitting diode (LED) is one of the important high power white LED. The thickness, concentration and concentration distribution of the phosphor layer has a critical influence on the LED optical performance. Previous literature mainly focus on the luminous flux of the LED. Few are involved with the relationship between the concentration and the correlated color temperature (CCT), and angular color uniformity (ACU) of LED. Based on the ray-tracing simulation, the luminous flux, CCT and ACU affected by the phosphor thickness, concentration and concentration distribution were obtained and studied. The results provide effective references for the phosphor coating process design and optical performance analysis of conformal coating LED.

In China, the application of condensing lining in submerged arc furnace for producing high-carbon ferromanganese started with the introduction of Ucar technology from USA through Shanxi Yi Wang Ferroalloy Co. Ltd. At present, the technology and service can be also provided by Henan Fang Yuan Group. However, it is still applied in submerged arc furnace for producing high-carbon ferromanganese. The application of condensing lining in large-scale submerged arc furnace for producing ferronickel is still in the exploration stage. In this article, based on communicating with technician worked in ferronickel corporation, enterprises devoted effort to the research & development of condensing lining and summarizing nickel iron production experiences, referenced advices for structure and design of condensing lining were put forward.

The future of the world energy supply and consumption will be diversified, clean, efficient and global marketization direction. In existing thermal applications technologies, selective absorption coating technology is recognized as the more core technology, it plays a vital role in improve the conversion efficiency of solar thermal, large-scale promotion solar thermal applications. Study results suggest that: the proposed process and structural design, can be prepared in high-temperature non-vacuum environment, with a more balanced absorption performance and reliable high-temperature atmospheric environment service stability TiMoAlON selective absorption film on the new energy vehicles.

In this paper, a model of energy-environment-economic model based on dynamic CGE model is constructed after the linkage of dynamic CGE model and energy technology model, the choices of policy of energy conservation and carbon reduction to deal with the change of climate are analysed. Besides the improvement of technology of energy, if carbon taxation is employed, the goal to reduce its carbon intensity by 40% by 2020 compared with 2005 need to levy a tax of 60yuan per tonne, the simulations of this tax to carbon reduction, economic and income of residents are analysed under different circumstances, the results shows that there is a great impact on income of residents and reduction-intensive industries with a higher tax burden level.

With the increasing availability and mobile application of LBS (Location-Based Services), large scale spatial objects remind challenge in cloud environments. In order to retrieve a few data items within a very large structured data set, skyline queries are utilized to optimize a single respectively multiple criteria. In this paper, we develop a new pre-clustering-based skyline queries technique to address the skewed distribution problem. We also present distributed approaches that construct grid index and process skyline queries. We evaluate the effectiveness of our algorithms with extensive experiments using real data sets. The results demonstrate the efficiency and scalability of our skyline queries algorithms based on pre-clustering.