In this paper, the preparation of polymeric nanocomposite based on carbon nanotubes or/and graphene by radiation techniques were reviewed. The preparation of polyhedral poligomeric sisesquioxane (POSS)-polymer and montmorillonite-polymer nanocomposite using radiation methods were discussed. And the preparation...

In order to adapt to the production demand, it is planned to upgrade the berths of high-piled wharf upper structure of which is severely damaged and adopt static load test to check if the bearing capacity of steel pipes in original structure can reach 6,000kN as required for use in newly built structure...

In order to improve the glass forming ability of Cu-based bulk amorphous, improve it's mechanical properties and plasticity, the Cu46Zr42Al8Ag4 alloy rods with 3.0 mm in diameter were prepared by the suspend melting-copper mold suction casting. The structure, thermal stability and flexural behavior were...

This study establishes a method of refining the 2,2-dimethylolpropionaldehyde and recovering the methanol and propylaldehyde by continuous side-distillation and distillation, the process was simulated by Aspen Plus software. In addition, the effects of the theoretical stage numbers, feed stage, side-stream...

The recycled coarse aggregates were soaked in the water-glass solution with several concentrations for different soaking time. The optimal-processing recycled coarse aggregate was used to prepare the recycled concrete whose basic mechanical property and durability were studied. Tests showed: the water-glass...

Mixed antioxidants composed of antioxidant N-phenyl-N'-isopropyl-p-phenylenediamine (IPPD) and lanthanum (La) complex were added as a filler to prepare natural rubber (NR) composites. By mechanical testing, X-ray photoelectron spectroscopy, and thermogravimetric analysis, a string of data, including...

Manganese adsorptive removal is an important treatment process in constructed wetlands to deal with considerable amounts of tailing wastewater, many materials have been proposed for its removal. This work is aimed to examining the potential of biochars sorbent materials for removing Mn ions from manganese...

An effective protocol has been established to induce adventitious buds regeneration from 3 types of explants (petiole, petiolule, cotyledon petiole) of Jatropha curcas L. All the explants were dealt with high concentrations (5-120 mg/L) of TDZ solution for various soak time (5-80 min) with the regeneration...

By using the hydrolysis of Al3+ salt under near-neutral conditions, Al(OH)3 colloidal solution has been prepared. The polypropylene based ultrafiltration (UF) membrane materials were uniformly coated with Al(OH)3 colloid via hydraulic spin coating technique. It was indicated that the degree of hydrophobicity...

In this work, theoretical calculations have been performed on urea maleic acid (UMA) by using density functional theory (DFT) method at B3LYP/6-311++G(d,p) basis set levels. In calculation of electronic absorption spectra, TD-DFT calculations have been carried out. The calculated HOMO-LUMO energies confirm...

There exist synergistic effect between steel slag and blast furnace slag in preparation of solidifying agent for total tailings backfill. By investigating the effect of various activators, the proportioning of the solidifying agent was obtained: steel slag 35 %, blast furnace slag 35 %, Portland cement...

In order to improve the processing properties of starch, maleic anhydride grafted starch prepared by solution polymerization,With starch and maleic anhydride as raw materials. The structure of the material have been characterized by Fourier transform infrared spectrum(FTIR) and scanning electron microscopy...

As the stay cables are the key members of large span cable-stayed bridges, Accurate calculation of its bearing capacity is the basic foundation of structure design and soundness assessment. Using the statistical theory, 81 7-1770MPa new wire strength test results are employed to investigate the law of...

In order to study the influence of fly ash content and desert sand replacement ratio on the static elastic deformation of desert sand high strength concrete, experiments on 28d static compression modulus of desert sand high strength concrete with different fly ash content and desert sand replacement...

The nanocrystalline and amorphous MgxNi100-x+5wt.%TiF3 (x=50, 60, 70) hydrogen storage alloys were synthesized by mechanical ball milling method. Microstructure and electrochemical performances of ball-milled alloys were characterized by X-ray diffraction (XRD), high resolution transmission electron...

In this paper, the three-dimensional CNC laser cutting machine as the research object, the finite element analysis software platform, using the related theories of modal superposition of the main moving parts of 3D CNC laser cutting machine for instantaneous modal analysis and the equipment of dynamic...

With the progress of the beneficiation technology, the problem difficult to separate poor miscellaneous hematite can be solved, iron powder with finer grain size. In order to reduce the import of iron ore powder, reduce the cost of raw materials, and make full use of domestic iron ore resources. Do the...

Monodisperse PbWO4:Tb3+ hierarchical ellipsoidal particles have been fabricated through a hydrothermal method by using trisodium citrate and SDBS as surfactants. The as-obtained PbWO4:Tb3+ are well-dispersed with narrow size distribution and are assembled by many closely packed nanoparticles. The as-obtained...

In this paper, shale and feldspar were regarded as matrix materials and sillcon carbide was added as foaming agent. After a quality ratio of walnut shell was mixed with as pore-forming agent,porous insulation materialswere made through high temperature foaming. The firing curve was developed by studying...

The influence of temperature on the crystallization and the melting of the glassy frit was discussed. SiO2-B2O3-Al2O3-TiO2 frits were obtained by melting batches at different temperatures, were investigated by DTA and the crystallization energy was calculated. The fluidity of the frits upon heating was...

This experiment by using the composite method of the Mineralizer and short-cut carbon fiber to improve the performance of the shell, The influence of addition of mineralizer and the addition and length of short-cut carbon fiber on the high-temperature strength and high-temperature gravitational distortion...

In this work, poly-hydrazide (PH) is designed and prepared from vegetable oil, hydrazine hydrate and dichloroethane. Nitrogen atoms are fixed in the main chain of the polymers to modify the polarity. The effectiveness of the PHs on four crude oil were tested as pour point depressants as well as paraffin...

Relationship between loopholes of stress concentrated coefficients and stress consolidate coefficients were illustrated. The relationship between impact value and loopholes sensitivity were found, the relationship between crack forming energy and crack forming life was studied.

In the previous research, it has been found that cyclohexanone pentaerythritol ketal has some bioactivity in the treatment of hurt in sports. In this work, cyclohexanone pentaerythritol ketal was synthesized from cyclohexanone and pentaerythritol by condensation catalyzed by zeolite and modified zeolite,...

Nanodiamond seeding is a well-established approach to enhance the nucleation density in chemical vapor deposition (CVD) diamond growth. However, nanodiamond seeding is highly dependent on the properties of nanodiamond particles, the solvent and the substrate. In this work we present a simple electrostatic...

This paper studied room temperature and in-situ high temperature Raman spectra of coal samples of different carbon content with 355 nm laser Raman spectrometer. The deconvoluted parameters of D band and G band were analysed. The relationship between different carbon content and the Raman spectra characteristics...

Choose the aluminum borate whisker (40wt%) reinforced aluminum phosphate composite material, molding under the pressure of 100 MPa and 200 MPa, and sintered at 1050øC, 1100øC, 1150øC, 1200øC, 1250øC, 1300øC, 1350øC, then test the flexural strength, Vickers hardness and fracture toughness of composites....

China advanced research reactor (CARR) is already critical in 2010 and constructed with three neutron guides. One small angle neutron scattering spectrometer (SANS) has almost finished. This paper introduces the characteristic, application and development situation of SANS at home and abroad. The necessity...

The identification of moving loads based on influence line method had defects of uncounted lateral distribution of load, unapparent peak values and a low speed of recognition. To improve these disadvantages, this paper proposes a method to identify moving loads, which identified transverse positions...

As the bridge structure is effected by the environment, the erosion of harmful substances, vehicles, wind, earthquakes, fatigue, and other human factors, plus the degradation of the material properties, parts of the structure suffer varying degrees of injury before reaching their design life. This paper...

Balance beam is the key component of the suspension of self-handling trailer. It is the walking balance mechanism of self-handling trailer and a part of the trailer to realize self-handling (the rear dump).Its reliability determines the reliability of the running and loading and unloading function of...

After sequenced rotation with ordinary shaped anvil, there exist coarse grains and mixed grains in the 20Mn5 hollow steel ingot used for hydro-generator shaft. By studying the dynamic recrystallization behavior of 20Mn5 steel under single-pass and multi-pass compression, the criterion for grain refinement...

In this paper, the numerical method is used to analyze the effect of the crack on the vibration of shaft. Firstly, with Patran/Nastran calculate and compare the free shaft mode and the crack shaft mode. Then numerically calculate the natural frequencies and modes of the shaft at different length and...

In order to improve segmentation of spray painting character in the slab surface, in this paper, we propose to improve the picture quality by image enhancement and filtering, segmenting image from coarse to fine to solve problem in character image segmentation stage step by step. Local dynamic thresholding...

The paper aimed at the problem of machining of fortified drill collar which common turning has the low efficiency. The author design a numerical control radial feed whirlwind milling device on the basis of inner whirlwind milling equipment, the device can be numerical control radial feed in machining....

A uniform CNTs coating on highly porous nanofibrous and biodegradable PLLA scaffolds, intended for tissue engineering, by the electrophoretic deposition (EPD) technique. The morphologies before and after EPD of CNT coating were investigated by SEM. The mechanical properties were also measured and the...

Based on graphene oxide and reduced graphene oxide, a novel gas sensor was fabricated with layer-by-layer self-assembly techniques. The negatively charged graphene oxide sheets and the positively charged reduced graphene oxide sheets were layer-by-layer assembled on positive Au electrodes. The gas sensor...

Based on statistical data of National Statistical Bureau of China, and given the least-squares fitting of Legendre polynomial, the data of total energy consumption from 1978 to 2014 is analyzed by least squares method and Legendre polynomial least squares method respectively. The results showed that...

In this paper, a new composite with Fe3O4 and Cu nanoparticles encapsulated in carbon nanofibers (CNFs) and its electrochemical properties were reported. The composite is fabricated by a simple electrospinning technique followed by heat treatment. At a current density of 100 mA g-1, this electrode exhibits...

A novel compact asymmetrical coplanar waveguide (ACPW)-fed ultra-wideband (UWB) bandpass filter is proposed in this paper, and the application of multriresolution time-domain (MRTD) formulation technique to the modeling of UWB ACPW filter is facilitated. The numerical and measured results demonstrate...

Carbon fiber tow is used in aerospace, automotive, marine, sports etc. applications with over 20 years' service history due to outstanding processing characteristics. This research work deals with carbon fiber tow mechanical properties improvement by conducting a new device, i.e. fiber splicing equipment...

Because of the recent development of wearable electronic and smart textiles, the conductive yarns, fabrics and electrically heated garments have been widely studied and applied in many fields. This research is primarily concern to improve the conductive yarn quality with designed a new automatic machine...

In this work, NiFe2O4 was prepared as oxygen carrier (OC) and its redox performance with lignite was systematically studied by thermogravimetric analyzer (TGA) experiments. Surface structures of the fresh and reduced NiFe2O4 were characterized by SEM, BET, and XRD methods. In comparison with NiO and...

In this work, a packaging laminate consisting of LDPE (Low Density Polyethylene), Al-foil (Aluminum foil) is focused, and failure due to necking in substrates and interfacial delamination under loading are considered. A coupled elasto-plasticity damage and fracture constitutive model is combined. The...

The irreducible water saturation, the saturation of water when it begins to flow, is not a fixed value in the development process, whose numerical value is related to specific reservoir production conditions. Based on the integration of relative permeability curve and mercury intrusion curve, the author...

Rolled lip is needed to enhance intensity, rigidity and aesthetic feeling of aluminium alloy plate-wheels. The exacting requirements of rolled lip make the forming technology complex. And the forming process is difficult to control. Punch flanging technology adopted to form rolled lip of aluminium alloy...

In order to solve the crack problem of T-shaped welded tee in waste heat boiler of a LNG power plant, this paper proposed using the principle of fracture mechanics to analyze propagating crack quantitatively. Firstly, the stress distribution of T-shape welded pipe without structure default was analyzed....

The SHPB of 120 mm was used to investigate the dynamic mechanical behavior of the high-strength concrete under impact loading.To research the effect of different strength grade (54.82 MPa, 63.75 MPa, 84.00 MPa) and different strain rate (10 ~ 40 / s) for the dynamic mechanical properties of concrete,...

Based on the difficult technical defect, measuring the amount of solidification shrinkage and the stress, we use the linear contraction-thermal stress In situ measurement equipment, designed independently by shanghai university, to study the solidification characteristics, such as linear contraction,...

Effects of annealing on structural evolution and microhardness of Zr50Cu40-xAl10Pdx (x=0-15) bulk metallic glasses (BMGs) and composites were investigated using X-ray diffraction (XRD) and micro-hardness analysis. The glass transition temperature Tg and the crystallization temperature Tx of Zr50Cu40-xAl10Pdx...

LNG low-temperature pipe pre-cooling is difficult point of completion and commissioning of LNG project, under the flow rate of 0.2m/s,0.5m/s and 1m/s, FLUENT software is used to conduct simulation of BOG gas pre-cooling technology for 63010mm low-temperature pipe to obtain temperature change regularity...