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The paper took a structure improvement of a coupling component for board-level photoelectric interconnection and analyzed its coupling efficiency by stimulation. Firstly, it briefly introduced the commonly used coupling components, analyzed the coupling performance, and selected a coupling component to improve its structure. Secondly, it introduced methods to improve coupling components, such as 45-degree gold-plated cross section, and manufacturing ball lens on both the top and the bottom to increase the coupling efficiency of coupling components. Finally, the optical simulation software Advanced Systems Analysis Program was applied to analyze the coupling efficiency. The coupling efficiency of improved coupling component was increased. The analyses and results are significant in engineering application and guiding.

The dynamic mechanical properties of radial and chordwise bamboo pieces were tested by dynamic mechanical analysis (DMA). The results show that the storage modulus and loss modulus and tangent delta of chordwise direction were all larger than the radial direction of bamboo; the peak of glass transition temperature of chordwise direction is high than the radial direction, and their sizes are very close; dynamic mechanical analysis can provide a reference for the optimization applicable environment temperature of curtain plybamboo.

A new type of foam fractionation column with spiral internal had been designed for enhancing the foam drainage and thus for the removal of minute hazardous materials. Chromium was separated from wastewater using the continuous foam separation method. According to the similar physical behavior of foam separation and chemical reaction processes, the equivalent chemical reaction constant was introduced, Establishment concentrate distributed mathematical model of the whole tower under the condition of continuous foam separation with SDS as active agent. The model has been tested by experiments. The result indicated that foam separation process could be regarded as a first order reaction, and diffusion coefficient was 4.86cm2/s.

Subjected to external pressure, buckling analysis is key problem in the roof shell design of large scale cylinder gasholder. Two simplified buckling analysis methods, the continuous orthotropic plate method and the split-rigidity method, are introduced to check the general instability of stiffened spherical shallow shell. Considering the plate and the stiffeners in two directions with the same contribution to the bending stiffness, the equivalent bending thickness formula is put forward. The finite element model for a 100,000 m³cylinder gasholder roof is setup. The buckling critical loads obtained prove that the split-rigidity analysis method and formulae are applicable. The results can be referred in design of stiffened spherical shallow shell.

Previous studies have indicated that the density and the cost are high,and construction are difficult for radial curtain composite plybamboo.This paper presents a study on the high pressure and low pressure manufacturing technology of medium density radial curtain composite plybamboo.The results showed: the high pressure technology was optimum manufacturing technology of medium density radial curtain composite plybamboo,and the technology conditions were: hot pressing temperature was 140 °C, high pressure maintaning time was 80s/mm at 4MPa, high pressure maintaning time was 100s/mm at 3.5MPa.

This paper presents the studies on surface contact angles of water and phenolic resin and bonding strengths of three kinds of radial bamboo strips and chordwise bamboo strips. The results showed: water and phenolic resin could better wet radial bamboo strips, and wettability and gluing properties of the base radial bamboo strips were best, the middle radial bamboo strips followed, the tip radial bamboo strips ranked third in the three kinds of radial bamboo strips; wettability of water and phenolic resin and gluing properties of chordwise bamboo strips were better than radial bamboo strips.

Cr(III)-containing wastewater was treated by continuous foam separation process. The factors affecting the Cr(III) removal efficiency were researched. The optimal operating conditions determined by orthogonal experiments are as follows:wastewater pH 6.50,gas flow 400ml/min,cationic surfactant dosage 50mg/L.When the mass concentration of Cr(III) in the influent is 7.5mg/L,the effluent can meet the national discharge standard with 98% of Cr(III) removal rate for continuous running. The kinetic experimental results show that the foam separation of Cr(III) accords with the first order kinetic equation. The results of continuous experiments in a scale-up foam separation column indicate which reach the Second Wastewater Discharge Standard of Country.

One novel highly cross-linked, shape-controllable molecularly imprinted sol-gel film (MISF) with good thermal and chemical stability and three-dimensional network porous structure has been developed. The binding characteristic of the imprinted film to bifenthrin was evaluated by equilibrium binding experiments and imprinting-induced promotion of binding. The MISF was modified into the wells of 96 micro-well plate combined with chemiluminescence (CL) technology to establish the molecular imprinting-chemiluminescence (MI-CL) sensor. The high throughput and high selective detection sensor of bifenthrin was applied in vegetable and food samples with satisfactory results.

Cement concrete has an increasing utilization in highway construction. However, the lower flexural tensile strength and abrasion-resistance restricted the development of concrete pavement with heavy traffic. Hence, It has highlighted the need for research on high performance concrete (HPC). The design of specific concrete normally depends on the mixing of mineral admixtures in concrete mixture. This paper presents the first experimental study on strength and abrasion-resistance enhancement admixture (SAEA) mixed with slag powder, steel slag powder and silica fume. The optimal proportion of three mineral admixture and reasonable mixed amount of SAEA were then given, and the mechanism of SAEA reacted in concrete was analyzed based on sol-gel theory. Lastly, the effect of concrete mixed with SAEA was validated and the micro-structure transformation of specimens was given by SEM.

By determining membership function of the input parameters and selecting defuzzification method, the evaluation model which can be used to intelligent analyzing the causes of SMT solder joint defects was set up. The fuzzy neural network was trained by using the output variables of the training samples from intelligent discrimination as the input variables of training samples of fuzzy neural network. The fuzzy neural network was tested by using the output variables of the testing samples from intelligent discrimination as the input variables of testing samples of fuzzy neural network. The results show that by using the evaluation model the cause of SMT solder joint defects can be analyzed intelligently and the results of intelligently analysis are reasonable, the evaluation model can be used practically.

The processing technique of bamboo particle board using laccase-treated calcium lignosulfonate was investigated and optimized. We studied the influence of enzyme amount, calcium ligosulfonate amount and hot pressing temperature on different particle board properties. All three factors were significant difference at different levels. There has significant differences between enzyme amount and Modulus of Rupture (MOR)，Modulus of Elasticity (MOE), Thickness Swelling (TS) (P

The ways of chemical component analysis, chemical analysis photoelectron energy spectrum (ESCA) analysis and X ray diffraction were used to research and analyze the variation law of material (wood) chemical component, functional groups and cellulose crystallinity in the process of making board. The results showed that：(1) The maximum contents of holocellulose and pentosan were wood, in the next place were fiberboard, and the minimum one were binderless fiberboard. The maximum contents of α-cellulose were woodfiber, in the next place were wood, and the minimum one were binderless fiberboard. The minimum contents of xylogen were wood, in the next place were woodfiber, and the maximum one were binderless fiberboard. (2) The C1and C3 functional groups relative contents of woodfiber and binderless fiberboard were higher than wood. The C2 functional groups relative contents of wood were higher than woodfiber and binderless fiberboard. The C4 functional groups relative contents of woodfiber were zero, and the binderless fiberboards were higher than wood. (3)The maximum cellulose relative crystallinity was binderless fiberboard, in the next place was fiberboard, and the minimum one was wood.

Thermagravimetric and combustion characteristics of binderless fiberboard (BF) were investigated. Fibers prepared by traditional heat grinding (FB) and which prepared in the presence of trivial inorganic acid during grinding (FBA) were used as compared. The results show that the total weight lost during thermal decomposition following as: BF > FBA > FB. The order of initial decomposition temperature was that FB > BF > FBA. Thermagravimetric weight loss rate in pyrolysis of woodfiber and binderless fiberboard got from adding minim inorganic acid in the heat grinding system to heat grinding were faster compared to the woodfiber made by heat grinding. Combustion characteristics results revealed that heat release rate and total heat release amount of BF were larger than that of FB. Smoking ratio of BF was larger than that of FB before the flaming combustion, but t less than that of FB after the flaming combustion. The concentration of produced CO2 and CO for BF during combustion was higher than FB.

Multi-walled carbon nanotubes (MWNTs)-Fe3Al was prepared by spark plasma sintering. Microstructural investigations show that MWNT remains in the composites. The magnetic properties were investigated with alternating gradient force magnetometer, which shows that the composites still display good soft magnetic property. The MWNTs-Fe3Al composites have a similar magnetic hysteresis loops to that of Fe3Al, indicating the good soft magnetic properties of the composite. Excellent magnetic property implies that MWNT-Fe3Al composites may also have significant potential for applications in electronic-magnetic nanodevice fields.

This paper presented a new technology, which was the online wheel wear evaluation in grinding WC-Co ceramic coating by using wavelet packet decomposition. On the basis of the measurement methods, theory of online wear evaluation of wheel was introduced. And the selection principle of characteristic signals was brought forward, the grinding acceleration signal was the best choice among many characteristic signals. The time domain signal analysis method of wavelet packet decomposition was analyzed. Lastly, experiments on the wear of wheel were performed, and the experimental results showed the validity of the method.