Applied Mechanics and Materials Vols. 713-715

Abstract: The gasification of municipal waste was a promising technology for the clean and effective disposal of municipal waste, the oxygen-rich gasification was thought to increase the heating value of the derived gasification gas. To get a better understanding of the effect of oxygen concentration on the reaction kinetics, TG analysis was performed using model municipal waste, the kinetic characteristics were obtained and corresponding model was built.

Abstract: Cuprous oxide catalyst was prepared and applied as photocatalist to treat chromium (VI) in wastewater, and the photocatalytic activity of the cuprous oxide was studied. The optimal conditions for the treatment was as follows: the pH of wastewater was 3, the amount of catalysts was 0.3 g/L, the reaction temperature was 60°C. Under the optimal conditions, the removal rate of chromium (IV) in wastewater reached 50% in the presence of cuprous oxide catalyst.

Abstract: In the enterprise, the comparison of methods about different materials, such as differences of level, quality and properties are complex and difficult to apply in practice. Tsui's-MCB comparison method is multiple comparison method of ANOVA. It is usually used in the subsequent process of variance analysis, precisely analysis for difference between average value of factors.

Abstract: In this paper, Fe₃O₄ magnetic nanoparticles were synthesized by chemical co-precipitation method and their surface was modified by sodium oleate. The γ-Fe₂O₃ magnetic nanoparticles were achieved by thermal oxidizing of Fe₃O₄. The γ-Fe₂O₃ magnetic fluid was prepared by using silicone oil as carrier liquid and oleic acid as surface modification agent, and the saturation magnetization of prepared γ-Fe₂O₃ magnetic fluid hits 14.25emu/g.

Abstract: Lychee (LYchee chinensis) is a tropical, subtropical climate zone of special fruit, the“southern good fruit” ,China is the world’ largest producer of litchi, commercial long history of cultivation. Is also one of the most competitive on the international fruit market fruit present. Litchi fruit flavor is unique, colorful, nutrient-rich, loved by the people. But its fruit ripening is in the hot season, due to post-harvest browning (loss of red) and fruit rot rapid deterioration leaving the fruit, post harvest life at room temperature is less than three days, this short postharvest life strictly limits litchi long-distance transportation, sale and consumption.

Abstract: A simple solvothermal route has been used to prepare SnSe nanowires using SnCl₄·4H₂O and Selenium powder. The phase, structure, morphology, and optical properties of the as-synthesized products were characterized by powder X-ray diffraction (XRD), scan electron microscopy (SEM), Raman spectroscope (RS) and UV-visible spectrophotometer (UV-vis). The results showed that SnSe nanowires were prepared at 200°C for 24 h and in the length of 150-200μm, and width of 1-1.5μm. The band gap of SnSe nanowires was about 1.67 eV, which was close to the optimum band gap of thin film solar cells.

Abstract: SiO₂/SnO₂-complex nanoparticles were prepared making use of a chemical method. The tribological properties of the resulting complex nanoparticles as an additive in rapeseed oil were evaluated using four–ball friction testers. The topographies and the chemical species of the worn surfaces of steel ball were analyzed by a scanning electron microscope (SEM) and an X-ray photoelectron spectroscope (XPS), respectively. It was found that the complex nanoparticles as the additive contributed to greatly improve the anti-wear ability and load-carrying capacity of the rapeseed base oil. The improved anti-wear ability and load-carrying capacity of the base stock in the presence of the complex nanoparticles as the additive were attribute to the adsorption and deposition of the nanoparticles on the sliding surface and subsequent formation of a boundary lubricating layer with a small shearing strength.

Abstract: The hierarchical hydroxyapatite (HAP), such as needle-shaped, spherical and flower-like, was successfully synthesized by a homogenous precipitation method with poly (styrene)-block-poly (acrylic acid) (PS-b-PAA)_. The self-assembled “crew-cut” micelles of amphiphilic block copolymer were found to play an important role in directing the nucleation and growth of HAP crystals. The morphology, crystal phrase and chemical structure of HAP crystal were investigated by scanning electron microscope (SEM), X-ray diffractions (XRD) and Fourier transform infrared spectroscopy (FT-IR) respectively.

Abstract: Research the nanosilver and other composite materials with the chitosan in the best composition with orthogonal test method. According to the best use concentration of nanosilver and composite materials carry out the orthogonal experiment. By using the ultrasonic method test the adhesion strength between chitosan membrane and the breeding net through calculating the loss of the membrane. With bacteriostatic circle method to determine the bacteriostatic effect of membrane. The results show that the main factors influence the adhesion of membrane and the effectiveness of bacteriostatic is adhesives and nanosilver. The orthogonal experiment results show that the optimum conditions of film forming as follows: the adhesion agent A3% , adhesion reagent B3% ,nanosilver solution 2% nanoantibacterial powder 3% ,tea saponin solution 60 mg/L. Under these conditions, the loss of the membranewas14.6%, the inhibition zone was 2.35cm. Orthogonal test was applied to the ratio of composite materials can get the best composite columns. Creating a better performance of target product and has a promising prospect for practical application.

Abstract: Jiaodong Peninsula surrounds on three sides by the sea, its air humidity in summer is larger than other cities. And Rongcheng is located at the eastern end of Jiaodong Peninsula,as a representative of the peninsula city ,its require in the house moisture treatment measures is much higher .we need break through not only from the building materials , but also from other angles, providing little help to improve moisture measures. We mainly consider from two aspects of the apartment layout and housing towards, and do our best to put forward a more targeted and more humane damp proof measures in order to promote the local moisture treatment measures to improvement, so as to promote the moisture treatment measures to further improvement in the coastal area of Jiaodong Peninsula.