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TiO2nanocrystalline semiconductor film was made on the titanium (Ti) substrate by hydrothermal method,and then prepared the CdSe quantum dot layer on the face of the TiO2nanocrystalline semiconductor film by electrochemical deposition method. We studied the affect of deposition voltage of the CdSe quantum dots’ growth, finding that when the deposition voltage was-1.3V,CdSe quantum dots grown best.However, In terms of CdSe/TiO2as the light-anode,using electricity chemistry workstation to test,We gain a solar cell with Short circuit current density of 1.45×10-3A·cm-2and the open circuit voltage of 0.24 V.

The emulsion of chitosan in acetic acid aqueous and poly lactic acid in chloroform was spray-dried to obtain the chitosan/poly lactic acid microencapsules (CS-PLA). The polypyrrole / chitosan/ polylactic acid microencapsules were prepared by polymerization pyrrole on CS-PLA. The structures and the morphologies of microencapsules were characterized by FTIR, SEM, TGA and four probes technique. The results showed that multilayer polypyrrole were formation on the surface of CS-PLA microencapsules, the microencapsules had 3.0-8.0 μm diameters with smooth surface, and the electrical conductivity value was 1.03×10-3 S/cm.

the influence of mixing amount of mineral admixture, volume content of fine and coarse aggregate have been systematical studied on the workability, mechanical properties and volume stability of self-compacting concrete. Test results showed that with the fly ash content increased, the workability of self-compacting concrete improved significantly, early compressive strength decreased, but increase rate of later strength improved remarkably, and the mixing amount of fly ash inhibited significantly the dry shrinkage of self-compacting concrete; with the volume content of coarse aggregate increased, the workability of self-compacting concrete decreased significantly, but the volume stability of self-compacting concrete improved obviously, thus the optimum volume content of coarse aggregate of self-compacting concrete was range from 0.30 to 0.34; when the volume content of fine aggregate varied at the range of 0.40~0.50, there may be little effects on the workability of self-compacting concrete, but the increase self-compacting concretes volume content could reduce obviously the dry shrinkage of self-compacting concrete. Moreover, the variation in the volume content of coarse and fine aggregate should have slight influence on the early strength of self-compacting concrete, and the influence of the volume content variety on the later strength of self-compacting concrete could be neglected eventually.

Soybean polypeptide mixture was decolorized by adopting activated carbon adsorption decolourization process. Anion/cation exchange process was used in the desalination processing of soybean polypeptide. It was showed that excellent decolorizing and desalting effect to soybean peptide solution was gained in the decolourization and desalination process adopted in this experiment. Optimal dosage of activated carbon was 1.2% solution amount (w/w). After decolorizing soybean polypeptide solution color was yellow. Proportion of anion resin and cation resin of ion exchange resin was 2:3(V/V). The volume of solution processed was 5 times as the volume of anion exchange resin. After desalination processing, ash content of soybean peptide solution reduced to 2.11% (dry basis), salinity decreased by 86%, on the other hand taste of soybean polypeptide was lite.

In order to discover the water damage mechanism of CRCP, the simulation test was established to study the relationship between crack width and seepage rate. The results show that the seepage rate increases with the widening of crack. For reducing water damage and improving pavement performance, some essential waterproof measures, according to the amount of rainfall, should be taken in designing the CRCP.

Samples of AISI 1045 carbon steel were surface hardened by micro plasma transferred arc (PTA) process. The hardened layer was characterized using both light optical and scanning electron microscopy and microhardness techniques. The tribological properties of the surface hardened layer and untreated substrate were investigated using a block-on-ring tribometer sliding against GCr15 steel under unlubricated condition. The worn surface morphologies and dominant wear mechanisms were identified using microscopy techniques. Results show that the surface hardened layer consists mainly of martensite and retained austensite with fine and dense structure, the microhardness of hardened layer increases from approximately HV 200 to HV 600. The wear volume loss of plasma hardened layer was 81.86×10-11m3 much better than that of untreated AISI 1045 carbon steel (743.44×10-11m3). Wear of untreated AISI 1045 carbon steel occurred by combined mechanisms of adhesion, abrasion and plastic deformation. While the worn surface of surface hardened layer is quite better with slight track and thin oxides on the worn surfaces. Plasma surface hardening has essentially changed the wear mechanism of the AISI 1045 carbon steel to slight abrasion and oxidation wear.

Ni-Cr coating and Ni-Cr/ZrO2 gradated coating were deposited on C45 carbon steel by high velocity arc spraying and micro-plasma spraying to solve the high temperature oxidation problem of medium carbon steel components. The oxidations of Ni-Cr coating, Ni-Cr/ZrO2 gradated coating and C45 carbon steel substrate were carried out for up to 108 hours in air atmosphere at 1100°C. The oxidation behaviors were investigated after detailed examinations by thermal gravimetric analysis (TGA), x-ray diffraction (XRD) and scanning electron microscopy (SEM). Ni-Cr coating and Ni-Cr/ZrO2 gradated coating show similar and low dynamics curve near to the logarithms function. Surface observations with SEM and XRD reveal that the oxidizing surface of the C45 carbon steel substrate is mainly a loose spherical structure consisted of mainly Fe2O3 and Fe3O4. The surface structures of Ni-Cr coating and Ni-Cr/ZrO2 gradated coating after 108 hours oxidization are rather denser than that of C45 carbon steel, which can effectively improve the properties of the oxidation resistance of C45 carbon steel substrate.

Both the complex permittivity and permeability of nanometer SiC and nanometer SiC/CNTs composite were investigated by Hewlett-Packard 8510B Network Analyzer. The results show that the complex permittivity of nanometer SiC/CNTs composite is much higher than that of nanometer SiC. Reflection curves of nanometer SiC and nanometer SiC/CNTs composite calculated with electromagnetic wave transmission-line theory show that the addition of CNTs at 6 wt%, 12 wt% and 18 wt% in nanometer SiC absorber can improve its microwave absorption properties strongly. There is a relationship between the mass fraction of CNTs and microwave absorption ability. With increase of the mass fraction of CNTs, its microwave absorption ability firstly increased then decreased. From the simulation, it was found that nanometer SiC with 12 wt% CNTs gave the optimum microwave absorption. The corresponding frequency of maximum reflection loss value of nanometer SiC/CNTs composite gradually moves to the low frequency range with increase of thickness. The maximum reflection loss value of nanometer SiC/CNTs composite (CNTs content is 12 wt%) was -25.74dB at the corresponding frequency of 11.60 GHz with a bandwidth under -5 dB (68% absorption) is 7.16 GHz when the thickness is 2.0 mm.