Advanced Materials Research Vols. 535-537

Abstract: Titanium and titanium alloys scaffolds have been widely explored in many load-bearing orthopaedic applications due to their excellent strength and corrosion resistance. However, their biocompatibility is also an important concern in these applications due to adverse reactions of metallic ions with the surrounding tissues after these metallic ions are released from implant surfaces. To respond on the challenge of producing a biocompatible material, a review on structural properties and surface treatments on titanium scaffolds and their effects on biological responses (in vitro and in vivo) are briefly presented.

Abstract: In order to solve the supporting problem of Wujiagou ore broken thick top-coal large sections coal roadway, in view of the mining geology and technology conditions, select the typical coal roadway 5106 tank and detect roof structure, detection results show that the major roof is coal, local contains feeble mudstone interlayer, shallow crack development, deep crack gradually reduce , then put forward the extra long bolt anchoring break top-coal to deep less fracture zone, and the theoretical calculation shows the feasibility and basic support parameters of using extra long bolt controlling deformation of coal roadway; Using FLAC numerical simulation method for different support scheme makes a comparative study, show that the extra long bolting effects obvious, and determined choosing extra long bolt + metal nets + W steel belt scheme. The site industrial test show that the extra long bolt + metal nets + W steel belt scheme supporting thick top-coal large sections of coal roadway effect is good.

Abstract: At present, cement industry will be the third major pollution source of nitrogen oxide pollution following electric power and automobile industry. According to Chinese 12th Five-Year Plan, nitrogen oxide emission must be decreased 10%. In this paper, the resources of NOx emission from cement production were analyzed. On the basis of forming mechanism of thermal NOx and fuel NOx, a simulation model was constructed to predict NOx generation process in RSP calciner. For the turbulent flow in calciner, a probability density function (PDF) describing time variation is used in model to predict NOx generation rate. The results provide important theory evidence for low-NOx calciner design and selection of its operation process parameter.

Abstract: Asphalt modifier is traditionally obtained from petroleum byproduct, which has a high price and can not regenerate. This makes the traditional asphalt modifier not able to satisfy the economic requirement of increasing highway construction. Therefore, it is necessary to find a new modifier, which is economically efficient and also has good engineering performance. This paper introduces a recent development on the vulcanizing process of eucommia ulmoides gum（EUG） and the physical mechanics function of vulcanized gum, and explains its desirable engineering characteristic as well as its engineering application foreground. In this study, based on the characteristic of rubber-plastic unified material chart, vulcanized EUG is blended with asphalt binder as a modifier. The analysis of infrared spectrum and scan electricity mirror and asphalt basic index experiment are made. The result indicates that vulcanized EUG can improve both low temperature performance and high temperature performance of asphalt, which means that it is a feasible and desired choice for asphalt modifying.

Abstract: Crushed brick light weight wall material, which was made of crushed brick as a main raw material and P•S cement as a cementious material. Crushed foam glass and some admixtures were added, is prepared under the ordinary temperature and pressure condition. The main research in this paper is if NaOH has good alkaline excitation on crushed brick light weight wall material through experimental research and mechanism analysis. Studies have shown that: (1) The main chemical composition of crushed brick powder are SiO2 and Al2O3, crushed brick powder have a certain activity.(2) NaOH releases the activity of the internal soluble SiO2 and Al2O3.(3) In this experiment system, when the caustic soda content is about 3%, there has been an obvious peak of compressive strength.

Abstract: The antifreeze & seepage of the open channel projects is the most significant part in the rural water-reducing irrigation system. The prerequisite of the concrete durability is to ensure the concrete strength unchanged, and the concrete strength directly affects the durability. Using the Orthogonal Experimental Design (OED) Method analyzed that the affection on the concrete strength by replacing the ordinary silicate cement with the compound cement,and adding the Polypropylene Fiber (PF), Fly Ash (FA), Water-reducing Agent (WA) into the concrete. It is seen that the effect on the concrete with using the FA and the WA is significant while the PF has little effect on it, and get the mix proportion of the open channel concrete in cold area.

Abstract: At present, architectural coatings has been not only decorating for buildings, but also a lot of special functions, such as energy conservation, fire-proofing, self-cleaning, et al. Energy conservation coatings play an important role with the enhancement energy conservation consciousness. Research progress of energy conservation coatings was reviewed in this paper.

Abstract: The influence of nano-clay on the physical and mechanical properties of the phosphoaluminate cement (PALC) was studied in the paper. The experimental results showed that nano-clay changed the water requirement of normal consistency and the setting time of phosphoaluminate cement. However its soundness was not affected by adding nano-clay. With 3% nano-clay added by weight of cement, PALC has an optimum compressive strength.

Abstract: This paper interprets the function and effect of material media in decorative art. It explores the extension and development of material media in decorative art, from the historical viewpoint. It advances that modern decorative art must be investigated from the new perspective, that is, the view of integrated material is used to explore and study modern decorative art. This is based on the fact that art tends to be generally integrated. Under such circumstances, its artistic expression and avant-garde ideas tend to have a direct correlation with material media, analyzing from its artistic value and aesthetic experience. More importantly, its artistic essence is supposed to be interpreted from its abstractness and self-expression of space.

Abstract: A series of new chiral side-chain liquid crystalline polysiloxanes(P0-P7) bearing cyano groups were synthesized with a cholesteric LC monomer and a nematic monomer with cyano units(electron withdrawing). The chemical structures and LC properties of the polymers were measured by spectrum and thermal analysis techniques. The obtained polymers were soluble in many solvents and the specific rotations showed negative values and increased with the increasing content of chiral reagent. P1 showed grained texture of smectic A, P2~P7 showed lined texture of chiral smectic C(SC*). XRD curves of P1~P7 samples showed sharp and strong peaks at low angle, but no sharp peak was seen for P0 sample. The temperatures at which 5% weight loss occurred(Td) were greater than 300oC for all the polymers, which reveals all the polymers were stable. And the Tg values of polymers were all low. The Tg and Ti values are all increased with the increasing chiral contents. All the polymers displayed wide range of liquid crystal phase on heating and cooling cycle.