Cellulose insulation paper/pressboard has been widely used in HVDC transformers. In this study, the aluminum oxide function film was deposited on the cellulose insulation pressboard surface using reactive radio frequency (RF) magnetron sputtering. The sputtered thin film was characterized by the scanning...

Foam Glass-ceramics were prepared by one step method, the blast furnace slag and waste glass were used as main raw materials,Na2B4O7·5H2O was added as flux .the Effects of Na2B4O7·5H2O on the pore size distribution, the bulk density and compressive strength of foam glass-ceramics were studied. Experimental...

LiNi0.8Co0.1Mn0.1O2 powders were synthesized from co-precipitated spherical metal hydroxide, Ni0.8Mn0.1Co0.1(OH)2. The effects of the complexant (NH4OH) concentration in base solution on the microstructure, crystalline structure and electrochemical properties of the product were studied. The results...

Based on the casting technique analysis on the temperature field and the velocity field for the low alloy steel, low alloy steel(LAS)/ high chromium white cast iron(HCCI) bimetal wear steel plate was prepared by two liquid bimetal composite casting process. The microstructure of interface layer of wear-resisting...

A series of AlCrNO based solar selective absorber coatings were deposited by cathodic arc ion plating on three kinds of different infrared reflectors (AlCr, Cu, Cr) and with different deposition currents respectively. The surface morphology, phase structure and surface roughness were characterized by...

Shore-to-ship power supply system has become core technology dealing with shipping environmental pollution. However, the lack of systemic technical standards of it has brought great challenges. This paper proposes standards system for shore-to-ship power supply system, which based on analyzing the trend...

The influence factors of cable junction accidents was determined by accidents analysis. The research methods to utilize rough set theory to extract effective information from cable junction accident data in history was discussed in this paper. Cable junction accident decision table attribute reduction...

With the higher and higher requirement for the quality of casting and the continuous development of casting technology, sand mold riser, heat insulation riser and heat production riser produced by the traditional process produced cannot reach the requirements of feeding of casting due to a lot of shortcomings,...

To simulate the application environment of a number of electronic products, the growth of Sn-0.3Ag-0.7Cu-0.5Bi-Ni/Cu solder joints with low content of Ag was investigated during aging in an interval mode. It shows that the intermetallic compound (IMC) (Cu,Ni)6Sn5 layer becomes thicker with increasing...

In this work, different weight percentages of Nano-ZnO were added to epoxy resin to enhance its strength and the water aging property. Meanwhile, the wear testing was using to evaluate the adhesive strength between the Nano-ZnO and epoxy resin. The composites were placed in a water bath at 80 for more...

A novel and efficient molecular imprinted polymers (MIPs) electrochemical sensor based on metal coordination technology was prepared by electro-polymerization, which was applied as a molecular recognition element to modify glassy carbon electrode (GCE) to construct an electrochemical sensor (MIPs/IDA/GR/GCE)...

The problem of an anti-plane crack in functionally graded magnetoelectroelastic materials is investigated. The material properties of the functionally graded magnetoelectro-elastic materials are assumed to be exponential function of y perpendicular to the crack. To make the analysis tractable, the crack...

The addition reaction was carried out under the acidic conditions using dicyandiamide and 3,3'-dimethyl-4,4'-diaminodicyclohexylmethane (DMDC) as raw materials to prepare 3,3'-dimethyl P-guanidino) dicyclohexylmethane. The effects of reaction temperature, reaction time and molar ratio of materials on...

The reason of super plastic forming of sheet is concluded. Using simulated annealing genetic algorithm does a kind of nonlinear optimization to reason of super plastic forming of sheet control. The diagnosis knowledge warehouse and controlling parameter of super plastic forming of sheet is built. It...

According to various problem of oil contained bearing of metal link burned, it is done as relation study of grind coefficient and oil leak, temperature rise and load pressure. The result is given that oil leak is more serious in the condition of higher pressure and lower speed, and grind coefficient...

In order to replace the natural sand with Fiber Engineered Cementitious Composites (PVA-ECC) in desert sand, the PVA-ECC of desert sand was put forward. Four factors, namely, water-cement ratio, fly ash content, PVA fiber content and desert sand substitution, The four-level orthogonal test was used to...

Thermal characteristics of lithium ion batteries are particularly important for both the optimization of the battery cells and design of the thermal management system for battery packs. The Si-C composite applied in lithium ion battery could improve the battery's energy density. For a 3 Ah pouch lithium...

Both conventional hydrogen peroxide bleaching and tetraacetylethylenediamine/hydrogen peroxide system bleaching were carried out on the scoured jute fiber, and the properties and structures of bleached fibers were compared to estimate the effect of tetraacetylethylenediamine in hydrogen peroxide bleaching....

Aluminum laminated composite (ALC) is a new type of structural material with a broad application space and development prospects. Due to the laminated structure, the mechanical properties and failure patterns of ALCs differ significantly from those of uniform materials. The friction stir welding (FSW)...

In this paper, a composite material model with ellipsoidal conductive particles was used to establish an effective conductivity model for studying graphene quantum dots (GQDs) solution. By comparing effective media theoretical (EMT) model, porous flow theory model and the general effective model (GEM),...

In order to improve the corrosion resistance of the metal, polysiloxane (PDMS) coating was prepared on the metal by spin coating method. The chemical structure and micro surface morphology of PDMS coatings were analyzed by infrared spectroscopy and scanning electron microscopy. Using electrochemical...

In this paper, the size distribution and quantity of carbides precipitated during the partition process of 60Si2CrVA spring steel treated by Q&P with different partition time were statistically analyzed by SEM. Carbide particles were obtained by electrolytic extraction of 60Si2CrVA treated by Q&P with...

The thermomechanical treatment test of CLAM steel is simulated by the thermal simulated test machine Gleeble3500, by means of constant temperature compression test to study the effect of the thermomechanical treatment processing on microstructure of China Low Activation Martensitic steel(CLAM steel)....

In this work, a modified solvothermal method has been developed to synthesize few layers of tungsten disulfide-nanosheets(WS2-NS). In order to determine the effect of reaction time on the morphology of the product in the preparation of ultrathin tungsten disulfide nanosheets, we prepared samples at different...

Because the electromagnetic railgun's main current can reach several MA and the muzzle velocity is more than 2 km/s, launching in this harsh environment in barrel will cause grooving to the rail. Using existing experimental data of references, this paper analyses the position and depth analysis of the...

For the crucial issues of joints in the truss structure of pultruded GFRP tube, the double-sided shear adhesive test was performed on the steel tube joints and GFRP tube to explore the effect of different adhesive lengths on the distribution of adhesive stress, joint slip and bearing capacity, in order...

Catalytic hydrolytic reaction of ammonia borane (AB) is regarded as safe and efficient way to produce hydrogen. However, the development of heterogeneous catalysts with both high catalytic performance and low cost for this hydrolytic reaction is still a great challenge. In this work, we have developed...

In order to improve the safety of power equipment, the influence of thermal aging on the performance of insulating paper used for transformers was investigated, the same type insulation paper with different basis weight was used to simulate the thermal aging process. The paper folding endurance, the...

The objective of this study was to recover the iron from the iron ore tailing and convert it into a value-added products like -Fe2O3 nanoparticles with photocatalytic properties. Iron was extracted from the iron ore tailing by using acid leaching method and the leaching parameters were discussed. When...

In order to investigate the fatigue behavior of Titanium Alloy in very high cycle region, fatigue test of Ti-6Al-4V was performed at ambient temperature by using ultrasonic fatigue equipment. Fracture surface morphology was observed by using Scanning Electron Microscope. The results demonstrate that...

This paper studies the computational method of the reliability of rectangular orthotropic membrane with four edges fixed under stochastic concentrated impact load. Based on the explicit equations of deflection response obtained in the previous work of our team, the reliability index and failure probability...

The last stage canal is the last channel to transport water to the field irrigation in irrigation system. Because of the large number of last stage channels, reducing the loss of water transportation plays an important role in improving the water use efficiency of irrigation area. At present, most of...

In the analysis of stochastic system, the nonlinearity of function has an important influence on the accuracy and efficiency, but the corresponding researches are very scarce. In this paper, two kinds of methods are put forward to determine the nonlinearity of the univariate function. Firstly, the nonlinearity...

Dynamic system reliability is one of the topics for structure reliability analysis. However, the classical system reliability and dynamic system reliability often have multiple failure modes which lead to the combinatorial explosion problems. In this paper, a new method for analyzing the reliability...

Graphene sheets and copper powder were dispersed into Polyvinyl Alcohol (PVA) solution by magnetic stirring, and then pre-coating the mixed solution on the polished AISI4140 substrate. Then laser cladding and laser remelting process were used to fabricated graphene copper and iron composite coating....

The main purpose of this paper is to study the chloride ion penetration resistance and pore structure of magnesium silicate hydrate cement (MSH) mortars. The chloride ion penetration resistance of MSH mortars with different water-to-cement ratios (0.5, 0.55, 0.6) and different sand rates (25%, 50%, 75%)...

The AlCoCrCuFeNi high-entropy alloy coating was fabricated on pure magnesium by means of laser cladding using a direct blown powder method. The formed coating is composed of two different layers, i.e., a lower composite layer consisting of some partially melted HEA particles in a mixture of Mg and a...

Fiber reinforced polymers (FRP) have been widely used in retrofitting or strengthening concrete structures in recent years. This is due to the various advantages of FRP composites, including high strength-weight ratio, high tensile modulus, superior corrosion resistance and ease of applying in strengthening...

This paper introduced the overall situation and tourism resources in Guizhou Province, and studied the anion distribution and air quality of scenic places of this region based on the results obtained by the test of some scenic spot, Using city gravity model and actual data, analysis the potential visitors...

It is proposed the evaluation theory of inverse analysis arithmetic, and it is introduced the evaluated equation on compensate fuzzy control by stainless steel, the affecting gene model of stainless steel on compensate fuzzy control is built. The application of installation process is introduced. The...

Based on the Johnson-Holmquist-Ceramics material model in LS-DYNA, the penetration process of the bullet impact sapphire plate is simulated by finite element method, and the penetration failure mechanism is also analyzed. Four main observations are obtained-First, when the bullet hits the sapphire plate,...

Aiming at the problems existing in the current tunnel supporting method, offered a new proposals for rock support with steel concrete structure in tunnel engineering. This paper introduces new supporting method and construction process, from the safety of the tunnel construction, schedule, waterproof,...

A kind of desert sand steel-PVA fiber high performance concrete is researched. The high performance concrete is composed of water, cement, fly ash and sand. Desert sand instead of part of the river sand, the replacement rate of 30%; fly ash instead of part of the cement, the replacement rate of 15%....

The present study aims to elaborate the particle in-flight behavior during plasma spraying and its significance in determining the microstructure and mechanical properties of plasma sprayed yttria partially stabilized zirconia (YSZ) thermal barrier coatings (TBCs). The as-sprayed YSZ coatings were characterized...

Natural diamond can be cut and grinded for manufacturing the super-hard tool in the field of ultra-precision machining. But the natural diamond cutting technology with high precision and high quality is still a challenge. The idea that laser cutting method combined with the other technologies provides...

This paper describe the solution to the ECML/PKDD discovery challenge on taxi destination prediction. The work consisted in predicting the destination of a taxi based on the beginning of its trajectory, represented as a variable-length sequence of GPS points, and diverse associated meta-information,...

With the shortage of fly ash in south of China and rush towards sustainability, how to use of resources of volcanic powder has become a new field for experts and scholars. This paper aims to study the suitability of replacing cement by volcanics in producing autoclaved aerated concrete (AAC) and find...

The mechanical and pressure-sensitive properties of nano-Fe2O3 cement paste were experimentally studied. The experimental results showed that, except at the 7-day age, the compressive strength of cement paste doped with different amounts of nano-Fe2O3 measured at the 14-day and 28-day ages had a steady...

This study explored the effect of adding different concentrations of carbon nanotubes (CNTs) on the resistance to chloride ions penetration of cement mortars through natural penetration of chloride ions and Mercury Intrusion Porosimetry. The experimental results of natural penetration of chloride ions...

The damage mechanics-effective stress method are used to predict the life of the structure under the interaction of creep and fatigue. The effective stress method is used to calculate the stress field of the component, and the repeated modification of the stiffness matrix is avoided, and the calculation...

The compressive strength and hydration process of cement-based materials containing with carbon nanotubes (CNTs) were investigated in this paper. The experimental results showed that the compressive strength of QC-CNT group under standard curing and dry-wet cycles was higher than that of Control group...

Porous materials with high specific surface areas was prepared by a combined method of microwave drying carbonization and activation processes, in which castor rhizome was used as carbon source, and KOH was used as activator, respectively. The porous material was added to the cigarette filters and the...

This study aimed to synthesize N-alkylated chitosan derivates with similar degree of substitution (DS) and alkyl groups of different carbon chain lengths via reductive alkylation, and then to compare their coagulation properties. Structural properties of the N-alkylated chitosan derivates were characterized...

A series of N-alkylated chitosan (NACS) with various alkyl chain length and degree of substitution (DS) was prepared by a reductive amination method. The synthesis and structural characteristics of NACS was determined by FTIR, NMR and elemental analysis (EA). Fluorescence spectroscopy was used to analyze...

This paper implements a four axis ball grinder to the high precision processing of graphite balls. In this paper, the mechanism of grinding effect by the four axis ball grinding method was analyzed. The influence from the size of lapper, the pressure and the grinding coefficient was studied. Then this...

Based on the experimental study of four RC full-size round columns under constant axial loading and lateral cyclic loading, the effectiveness of strengthening the RC round columns using the high performance ferrocement laminates (HPFL) for improving their seismic behavior has been examined. And with...

This paper discussed the structure composition and connection mode of composite cross arm, By tightened the vibration, redesigned the tower head structure of cup-tower, cathead tower and Upper Shape Tower using composite cross arm, the corridor width decreased by 3.2m and 3m-3.6m, Effectively solved...

The use of fireproof thermal insulation material in building external wall insulation system is of great significance. In this paper, through the research of three kinds of fireproof polystyrene insulation board in our country building market in recent years, the comparison and analysis with traditional...

For sandy slope, size of rock fall, groundwater level and type of site are all important factors which have significant influences on the movement characteristics of rock falls. To obtain the importance of each factor, orthogonal analysis was studied and shaking table test was drawn up. In the tests,...

The concrete quality is of great significance for the safety of buildings. This paper conducted the research on this subject in the actual concrete mixing plant, with concrete compressive strength (CCS) being the indicator of concrete quality. Firstly, in order to make the quality evaluation models feasible,...

Nine representative examples of water conservancy projects are selected, and the cost changes of water conservancy project are calculated by combining the cost adjustment method of replacing business tax with value-added tax on water conservancy project. At the same time, analyzing the reason for the...

In the view of the serious problem of low-rise gable roof buildings damaged by typhoon, a method of using wind-resistant energy dissipation devices on roof wind pressure to reduce the damage of strong wind on low-rise gable roof buildings is proposed in this paper. The wind tunnel experiments were carried...

This paper applies P-A model to study the fractal characteristics of 17 sub-watersheds in the study area from Badong county to Zigui county in TGP reservoir region. The results indicate that the small watersheds have obvious fractal characteristics and that the fractal of water system in the study area...

This paper focuses on the application, characteristics and advantages of composite girder with corrugated steel webs at home and aboard. The comparison between concrete girder and composite girder includes material quantity, intensity and stiffness. The results show that composite beam has saving on...

This paper highlights the production process, performance feature and engineering application of film laminated metal composite decorative panel , on the basis of introducing film materials. The development prospect of the product is broad by virtue of its excellent product performance and advantage...

By means of laboratory experiment, pump performance of crush sand concretes with different stone powder content and methylene blue value are measured. More stone powder provides better lubrication and better pump performance on low-strength concrete. Paste viscosity increases by increasing stone powder...

through the data plane and control plane isolation, SDN network architecture framework helps to simplify network configuration and management, improves the development efficiency, and the centralized logic controller to give more control over the entire network, the network has full visibility. These...

The essence of failure for compression-shear sliding unstable rock belongs to the fracture of dominant fissure. The fracture mechanics model of compression shear type dangerous rock is established by combining rock failure criterion with fracture strength factor; By equivalent stress method, the equivalent...

In this study, optical microscope (OM), tensile test, X-ray diffraction(XRD) method were used to investigate the effect of hot rolling parameters on texture and tensile properties of X65MO offshore pipeline steel. Result of microstructure observation reveals that the anisotropy of mechanical properties...

Visible-light responsive bismuth pyrostannate (Bi2Sn2O7) photocatalysts with the clew-like morphology have been synthesized by the hydrothermal method. XRD, FE-SEM, BET, UV-vis DRS was used to characterize the phase structure, surface morphology, and optical properties of catalysts. When the hydrothermal...