Applied Mechanics and Materials Vols. 416-417

Abstract: Engineering Ceramics is a inorganic nonmetal material, which is sintered at high-temperature. ceramics have promising potential as high-temperature strength.erosion-resistant, wear-resistant and hot impact-resistant.However, because they have high hardness and brittleness as well as nonconductive, it is very difficult to machine them using conventional machining. Their use-area is restricted. At presently, the machining technology of Engineering Ceramics by abrasive waterjet become more and more important for humankind. In this paper, the influence of technical parameters on machining quality has been studied and analyzed. A better changing method of technical parameters is given.

Abstract: Ceramic industry developed rapidly in recent years, a greater demand for new materials. SiC ceramics as one of candidate materials that a few suitable for use high-temperature structural parts, shows its unique advantages in the high temperature, thermal shock, corrosive and other harsh environments. Its high temperature performance and application potential has attracted people's attention, but its properties make it difficult sintering at atmospheric pressure, unable to meet the needs of industrial production. Pressure less sintering technology has become the key in its application promotion. As strong antioxidant activity, better abrasion resistance, hardness, thermal stability, high temperature strength, thermal expansion coefficient, thermal conductivity and thermal shock and great chemical resistance and other excellent characteristics, Silicon carbide ceramics are widely used in various fields. Based on the silicon carbide ceramic materialisms development process, characteristics, international research and proposed several status of sintering silicon carbide ceramic, and discuss its development trends.

Abstract: Application of nanometer materials in the design of clothing has achieved some success, and plays a positive role in promoting the innovation and development of clothing design and further meeting the needs of the market and consumers. This paper makes a brief analysis on the application of nanometer materials in the design of clothing.

Abstract: Organic compounds oxalic acid and ethylenediaminetetraacetic acid disodium salt-2-hydrate (EDTA Na₂) were described as laccase inhibitors by forming complex compounds with the metal ions of the laccase. Their influence on laccase from Trametes hirsuta lg-9 and Rhus vernificera in different test systems utilizing 2, 2-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2, 6-dimethoxyphenol (DMP) as enzyme substrates were tested. Our study indicated that oxalic acid can influence the laccase activity determination mainly by changing the pH of the reaction system. The influences of both oxalic acid and EDTA on the laccase activity determination with different substrates were different. The results indicated that both oxalic acid and EDTA could influence the laccase activity determination by influencing and the binding of laccases substrates but not by chelating metal of the laccase. The organic compounds can also influence the laccase activity determination by changing the pH of the reaction system.

Abstract: By water extraction, precipitation method we can extract tea saponin from tea seed cake and design and synthesize the new green tea soap based chelating agent in the synthesis design (tea saponin sodium sulfate). Study on the surface properties, the surface tension is lower than the tea saponin, and the value of HLB, foaming ability and foam stability are better than that of tea saponin. At the same time, considering the effects of heavy metal rate oscillation time, chelating agent concentration, pH and ionic strength on the chelating agent to remove, the results show that with the increase of oscillation, the removal rate and time of heavy metal concentration increase, and decrease with the increase of ionic strength and pH, thus concluding the optimum process of the removal of pb2+, cd2+ ions: the oscillation time is 12h, the mass fraction is 7%,the concentration of Ca (NO3)2 is 5.0, 0.01mol/L. Under this condition, ion removal rate of pb2+, cd2+ ions is the highest. The removal rate of tea saponin sodium sulfate ion on Cd2 is higher than Pb2 + ions, and these two kinds of tea saponin sodium sulfate ion removal rate are higher than that of tea saponin, improvement effect is obvious especially for Pb2 + ion removal rate.

Abstract: Synthetic polymer material is made of polymer composite materials. Plastic, rubber, chemical fiber, building glue and paint are mainly involved in civil engineering. The basic components of the polymer materials are synthetic polymers, which is referred to as superpolymer. Materials of civil engineering made from the polymer or the traditional material modified the preparations are traditionally known as the chemical building materials. Chemical building materials is more and more widely applied in civil engineering, playing an important role in various decorations, waterproof, anticorrosive adhesive, as other civil engineering materials can not be replaced by. The English translation of critical polymer materials is vital, and the translation quality has a direct impact on people's understanding of it. In this paper, using the method of Nord's function plus loyalty translation theory, the author discusses the translation problems of polymer materials, and provides constructive and theoretical basis for translation practice.

Abstract: In order to construct resource-saving and environment-friendly society, realize sustainable ecological development and advocate green sports, the application of fiber reinforced composites in the production of sports equipment is undoubtedly an effective and economical way to protect the environment. This thesis puts emphasis on the performance advantages of fiber reinforced composites and analyzes its application in sports equipment. It mainly discusses the application advantages of fiber reinforced composites in sports equipment, cites application cases and makes a conclusion of the research both at home and abroad of fiber reinforced composites.

Abstract: Based on the introduction of floating-gate silicon quantum dot single-electron memorizers structure and working principle, this paper builds corresponding lumping current and capacitance model to calculate the current with memory in the circumstance of linearity, saturation and sub-threshold. Taking advantage of the single-electron devices Threshold Voltage Shift educes different storage condition of nanostorage with different threshold voltage. The simulation shows, this model can precisely simulate memorys read and write state.

Abstract: Molecular dynamics (MD) simulations were performed on molecular models of cellulose represented by two crystalline samples and amorphous samples. Simulated elastic properties and structures of each cellulose model were studied by MD simulations with the reactive force field and compared against experimental data for corresponding sample. The simulation boxes in stretch provide the materials elasticity. When there is a strain, the energy increases and internal stresses were built up within the supercell. The elastic moduli of amorphous and crystalline cellulose were comparable to the literature value. The calculated results had negligible difference with the experimentally measured parameters that indicated that the initial structures were stable using the ReaxFF.

Abstract: In this paper, the safety evaluation model and limit indexes of a stone arch bridge in the Three Gorges Reservoir region are studied. Specifically, the permanent deformation limit indicators of the bridges are studied; the safety evaluation msodel and limit indexes of a stone arch bridge in Three Gorges Reservoir region are identified based on the practical disease test. A scientific criterion is provided for the vast number of the engineering technical personnel at the grass-roots level to easily and effectively judge if the locally-deformed stone arch bridges can conform to new specifications and requirements, so this study is of important social significance and practical engineering value.