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Electrochemical etching is widely used to process refractory metals such as tungsten and molybdenum. Flow field is one of the crucial factors that influence the surface quality in electrochemical etching. In this paper, the electrochemical etching flow field was analyzed via FLUENT, the characteristics of flow field in electrochemical etching are studied, furthermore, the effects of four different outlet forms of electrolyte on flow field uniformity, electrolyte velocity and pressure distribution are investigated. Under the same electrolyte flow rate, the flow field characteristics of different outlet forms are analyzed by velocity vector diagram, pressure distribution nephogram, velocity and pressure curve diagram. The simulation results indicate that stable electrolyte velocity and uniform pressure distribution of flow field are obtained when the outlet form of electrolyte adopts the optimized flat. Finally, the fixture for this outlet form is designed and fabricated, and experimental verification is carried out, which shown that the flow field is uniform and the crystal plane of the workpiece is well-distributed which according with the process requirements.

This study aims to investigate the interaction during the co-pyrolysis of Cangzhou coal and sawdust/rice husk. The synergistic is analyzed in the thermal behavior of the blends and the kinetics by thermogravimetric analysis (TG), also in the products yield (oil and char) from the fast co-pyrolysis and the oil characterization by GC-MS and UV fluorescence spectroscopy. Firstly TG experiment indicated the synergistic effect occurs during the co-pyrolysis process of the coal and rice husk occurs during the all the main pyrolysis (300-550°C) and that of the sawdust between 300-410°C (for the 50:50 and the 75:25 blends) and 300-550°C (for the 25:75 blend). Then the co-fast pyrolysis in a novel auger reactor increased the oil yield compared to the predicted values. The synergistic interaction promoted the oxygenated compounds, limited the SOx emissions, was less reactive and did not promote the aromatic components.

The intermetallic alloy LaNi3.8AlMn0.2 and its deuteride LaNi3.8AlMn0.2D3.2 were studied by neutron powder diffraction. The experimental results show that the crystal structure of LaNi3.8AlMn0.2 is CaCu5 type with the hexagonal P6/mmm space group, the substituted Al atoms occupy 2c and 3g sites, while Mn atoms are only located on the 3g sites. For the corresponding deuteride LaNi3.8AlMn0.2D3.2, the P6/mmm space group gives the best refinement, but D atoms enter two interstitial sites 6m and 12n.

Information security is fundamental to ensuring the normal operation of charging station. Based on CAN bus and 3G wireless network, this paper discusses current threats for communication network, builds a protection structure of information security, and proposes an overall information security protection framework. The firewall mainly includes digital signature authentication which combines SHA-1 message digest algorithm and ELGamal public key cipher system. Firewall-IDS (Intrusion Detection System) interactive modules and host information security protection modules is also designed. This paper lays a basic foundation for security construction of charging station’s communication network.

The structures of as-cast LaNi3.8AlMn0.2 alloys and subsequent compounds by means of annealing at different temperature (850, 900, 950, 1000 oC) were examined by using neutron powder diffraction (NPD) and X-ray diffraction (XRD). Based on the Rietveld method, the diffraction data was refined using FullProf software. The refined results demonstrate the structure types of all compounds are CaCu5 type and their space groups are P6/mmm. Increasing the annealing temperature, the lattice parameters of LaNi3.8AlMn0.2 compounds did not possess clearly linear variation. It is noted that Mn atoms do not occupy the 2c sites but occupy the 3g sites in all compounds.

A rapid ultrasonic wave-assisted dansylation procedure was developed for the derivatization of cadaverine prior to HPLC determination. Cadaverine was quantitatively dansylated in 10 min using a ultrasonic power of 200 W and a operating frequency of 40 KHz .In this case, the excellent derivatising condition are determined as follows: pH of buffer, 9.5; concentration of dansyl chloride, 5 mg/mL; time of reaction, 10 min. This method is fast, reproducible and practical for the analysis of cadaverine.

Based on the idea of privilege set, this paper proposes a threshold group signature scheme with multiple privilege sets. Only when the joint involvement of ordinary users under satisfied conditions and privileged users with multiple privilege sets can the valid proxy group signature be generated. Some members can’s forge signatures, which can help resist attacks. The threshold signature scheme has good features of privilege sets and threshold characteristics, unforgeability of signature and anonymity of verification and traceability of identity.

In the cloud computing mode TCCP, there exist shortcomings of overburdened trusted TC, the anonymity of nodes and configuration information of platform can’t be guaranteed. In this paper, we propose an anonymous scheme based on attribute certificate. The scheme is achieved by the trusted ring signature based on attribute certificate. By the security analysis, the anonymity and platform configuration information of computing nodes is guaranteed. By simulation experiment, we obtain the efficiency of the scheme. Comparing with Boneh ring signature based on ECC algorithm, this scheme has a great superiority in terms of large amount of ring signatures.

Cloud computing is a new technology for complex systems shared among numerous users. Therefore, for the trust and security of the cloud computing, authentication of users is a significant issue. Based on the fact that SSL Authentication Protocol (SAP) applied in cloud computing undergo a heavy computation and communication, we support the protocol based on the identity-based hierarchical model for cloud computing in this paper. By random oracle, we give the proof of the security of the protocol.

Remote attestation is the key technology of trusted computing. The existing remote attestation techniques lack of the trust measure of platform running state. In this paper, by the analysis and comparison of existing remote attestation technology, we propose a trust measure of platform running state, and a remote attestation program based on the trust measure results. By RO security analysis, and a simulation, we verify the security and efficiency of the program. The trust measure of platform running state is mainly based on the trust rating of the programs running on the platform, and a total trust value of the platform by an algorithm. The remote attestation for the trust measure of platform running state is based on K-CCA problem. In this paper, we carry out simulation experiment with different proportions of non-credible nodes and the experiment results verify the trust evaluation efficiency of the scheme on the platform.

Extracting dihydromyricetin from Ampelopsis grossedentata by water extraction method. The orthogonal test and single factor experiment were used to optimize the best extraction condition. The ratio of liquid and material is 20:1, extraction time is 90min, extraction temperature is 90°C,holding time is 1d. The results of comparison between two purification methods show: Purify with acetone and recrystallization with water is better. The purity of dihydromyricetin is high to 98%, recovery rate was 59.2%.

Currently, as the economic development level of Shenzhen International Low-carbon City is relatively low and the industries are low-end, it belongs to the areas with high energy consumption, high pollution and low output. The construction path of the Low-carbon City mainly covers four aspects, namely low-carbon industries, green buildings, low-carbon transportation and low-carbon technology. The Low-carbon City can explore the path for realizing total carbon emission control through establishing regional carbon emission forecasting and monitoring system and carbon source and carbon sink accounting system.

In order to take a precise and objective evaluation on asphalt-aggregate adhesion, this paper analyzed the function at asphalt-aggregate interface using surface free energy theory. Two asphalts and two aggregates were selected and their surface free energy parameters, , and , were measured by the Wilhelmy plate method and the column wicking technique, respectively. Then, the resistance to moisture damage of asphalt mixture was predicted using calculated asphalt-aggregate adhesive bond energy and asphalt cohesive bond energy. The results show that moisture damage is a thermodynamically favorable phenomenon. Asphalt with a great acid-base polar component and a low Lifshitz-van der Waals apolar component always exhibits perfect cohesion.

In recent years, with the global climate issue and the contradiction between energy environment and economic development becoming increasingly prominent, Shenzhen International Low-carbon City, as the flagship project of China-EU Strategic Cooperation on Sustainable Urbanization, aims at exploring new ways to realize low-carbon development models, while low-carbon development policy is one of the key factors. This paper firstly introduces the background of the Shenzhen International Low-carbon City Project, then summarizes advanced experience and gives experience reference in low-carbon development policy of the developed regions worldwide, and finally puts forward relevant countermeasures and suggestions.

In order to study the applicability of different weighted methods for indexes to evaluate the health status of basin. The base-system of water theory was introduced, which was used to evaluate the health status of Naolihe catchment. The analytic hierarchy process, entropy weighted method and the variation coefficient method were adopted to calculate the weight of indexes in the base-system of water. The analytic hierarchy process belongs to subjective evaluation method and the other two methods belong to objective evaluation method. Two of the three methods above were joined together, which was called a comprehensive method. In this paper, the three single methods and two comprehensive methods were adopted to calculate indexes’ weights of the base-system of water. The case study results showed that the single analytic hierarchy process was better than the other two single methods and the two comprehensive methods were better than the three single methods. In addition, the comprehensive method 1 (the analytic hierarchy process + entropy weighted method) was better than the comprehensive method 2 (the analytic hierarchy process + the variation coefficient method).

Low-carbon industry has risen gradually across the globe in recent years. This paper reviews the concept of low-carbon industry and points out that low-carbon industry, which is the collection of low-carbon production and service industries is the basis of low-carbon economy. And the paper also indicates the current situation of low-carbon industry in Shenzhen is well developing, and at the end of the paper several helpful suggestions is designed.

MBBR processes improve reliability, simplify operation and require less space than traditional wastewater treatment systems. The performance of biological membrane carriers is very important to MBBR operating efficiency. Modified HDPE material is more hydrophilic and electropositive. The experiment indicates that: The grafting percent is 3.67% at 40 min exposing time in Acetone-AA-BP system. The outflow CODCr and NH3-N removal efficiency is 87.57~93.12% and 68.82~76.33% respectively in modified HDPE system. The outflow CODCr and NH3-N concentration is content to II series in Discharge standard of water pollutants (DB 11/307-2005).

In order to analyze the gap of function network between Major depressive disorder and health person, this paper studies with modeling approach. This paper analyzes the function network of Major depressive disorder with the model based on anatomical distance and the number of common neighbor. The result shows that the distribution of the optimal brain function network is linear in all volunteer. And the slope of the linear relationship in the patients is less than health, so we hope this point can be as secondary evidence to determine the person whether fall ill. And we also propose two models and those models of brain function are based on anatomical distance or the number of common neighbor. Create the evaluation criteria for select the optimal brain function model network in each class model based on select the maximum value in the proportion of the common edges of two network accounted all edges. Select the model that can simulate the real brain function network by comparison with real data fMRI network. Finally, the results show the best model only is based on anatomical distance .

The paper explains the Ethernet/IP and CIP communication protocol and its application in the industrial automation systems, and designs a software system based on many construction cases,which can be transplanted to variety of the medium.

The p-n junction photocatalysts, p-CuO (at. 0-25%)/n-ZnO nanocomposite were prepared through hydrothermal method without using any organic solvent or surfactant. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-Ray spectroscopy, and UV-vis spectroscopy. The results demonstrated that the CuO/ZnO nanocomposite presented a two-dimensional morphology composed of sheet-like ZnO nanostructures adorned with CuO nanoparticles. The photocatalytic activity of CuO/ZnO with different Cu/Zn molar rations and pure ZnO synthesized by the identical synthetic route were evaluated by degrading methylene blue (MB) dye under UV-visible light irradiation. The CuO/ZnO with Cu/Zn molar ratio of 4% exhibits the highest photocatalytic activity compared that of the other photocatalysts under the identical conditions. It is mainly attributed to the increased charge separation rate in the nanocomposite and the extended photo-responding range.

According to the problem of extracting the community structure of large networks, we propose a simple heuristic method based on community coding optimization. It is shown to outperform the InfoMap community detection method in terms of computation time. Experiments show that our method can find out various communities in microblog, which reveal the core structure of the network.

Compared to conventional mesophilic anaerobic digestion, thermophilic anaerobic digestion may offer attractive advantages such as higher volatile solid destruction efficiency, higher biogas generation, and higher disinfection effect and better dewater ability. In this study, two experiments of waste activated sludge were conducted to evaluate the influence of total solid and inoculums ratio on the biogas production and thermophilic (55±1°C) anaerobic process stability. In first experiment, the biogas production of 4 reactors with solid concentration of 6%, 8%, 10% and 12% respectively was observed. The biogas productions in 4 reactors were 4444 mL, 4891 mL, 5573 mL and 6327 mL respectively, the biogas productions per unit VS digested of each group were all above 360 mL/g and the methane content in biogas of each reactor was kept about 70%. During the operation, pH value in the reactor was kept between 6.5 and 8.4. In second experiment, the biogas production of 4 reactors with inoculums ratio of 20%, 30%, 40% and 50% respectively was observed. The biogas productions in 4 reactors were 4730 mL, 6630 mL, 6820 mL and 7175 mL respectively, the biogas productions per unit VS digested of each group were all above 340 mL/g and the methane content in biogas of each reactor was kept about 70%. During the operation, pH value in the reactor was kept between 6.4 and 8.6. Putting into consideration, the shortening of anaerobic digestion cycle, costs saving, and increasing economic benefits; choosing TS within the scope of 8-10%and inoculums ratio within the scope of 30-40% are more recommended. And the results showed that thermophilic anaerobic digestion process for waste activated sludge could be operated steadily.

The aim of this study is to investigate the contaminant removal efficiency in wastewater when disposed by carbon fiber ecological grass. The paper analyzed the TN, TP, CODMn, NH4+-N and SS removal efficiency when used different dosage of carbon fiber ecological grass. The research results indicated that the contaminant removal efficiency at pH=8 is higher than pH=6, 7 and 9. When DO between 5.6 and 8, the TN, TP and NH4+-N removal efficiency has a highest level, the removal efficiency is 83.91%, 68.16% and 83.3% respectively. When DO between 8.1 and 10.7, the CODMn removal efficiency has a highest level, the removal efficiency is 57.93%. The stirring rate is important to the contaminant adsorption and removal. Consequently, selecting carbon fiber ecological grass in wastewater treatment is a good choice.

Common-rail pipe is an important component of fuel injection system, whose inner cavity is hidden and requires a high precision. So that the general mechanical processing is difficult to achieve, while abrasive flow machining just be able to solve this problem. In this article, the three-dimensional model of common-rail pipe is established and meshed by GAMBIT, next the mesh file is read into FLUENT, and then the Mixture model is used for numerical simulation. By analyzing the simulation results, we can get how will the pressure difference between inlet and outlet, the volume fraction of abrasive, and the processing order impact on the processing quality. Finally, a reasonable processing program is proposed for the common-rail pipe.

The use of palm shells as a precursor for the production of activated carbon with physical activation was investigated. The carbonized material was impregnated with potassium carbonate and potassium phosphate to improve the yield and adsorption capability of activated carbon. The produced activated carbons were characterized by Iodine number text, Methylene blue adsorption text, Nitrogen adsorption isotherms, Scanning electron microscope in order to understand the palm shell activated carbon. The results showed that palm shell is an appropriate precursor for activated carbon. The optimum activation condition is: temperature 850°C, activating time 60 min, and steam flow rate 1.0g min-1. Potassium carbonate-impregnated and potassium phosphate-impregnated sample showed higher value of surface area which attained 982m2/g and 973m2/g, respectively.

Dechlorane plus (DP) is a world-widely used flame retardant detected in the environment, biota and humans. The potential toxicity effect of DP is not well studied. In this research, mice were fed with DP-containing food. After two weeks, histopathological observation and oxidative stress was investigated in mouse liver. Our results demonstrated that over-dose DP induced inflammatory infiltration, hepatocellular swelling and oxidative stress in the mouse liver.

Objective: In this study, wheat dough rheological property changes caused by water-soluble dietary fiber were investigated. Methods: Capillary Rheometer and Extensional Rheometer were used to detect dough samples with water-soluble dietary fiber in different concentrations. Results: Water-soluble dietary fiber affects dough rheological properties both in strength and resistance. Conclusion: When water-soluble dietary fiber concentration increased, dough became softer but stability and stir tolerance decreased.

In this thesis the chromatography on DEAE-Cellulose 52 was used to isolate the crude polysaccharide from purple sweet potato (PPSP) . To get the purest polysaccharide from the purple sweet potato for the purpose, the influence of different pH environments and whether the fractions eluted with the high and low ionic strength eluents in corresponding pH environment during the elution process had the hybrid phenomenon were studied. Finally, results suggested that the purest polysaccharide of purple sweet potato would be got in the neutral and low ionic strength solution of NaCl when the crude polysaccharide was isolated by the chromatography column on DEAE-Cellulose 52 according to this study, and in this thesis the low ionic strength solution of NaCl was 11.7g.L-1, the elution rate of polysaccharide eluted with it was about 3% and the purity was about 94%.

Transmission towers have characteristics of similarities and succession; therefore parametric modeling ideas can be used in simulation study on the tower. Using CSG method, characteristics parameters extraction and the 2Z2E3 double-loop linear tower, the paper suggests parametric modeling analyzing the 2Z2E3 double-loop linear tower. Finally, its verified that the feasibility of parametric modeling through the modal analysis comparison between parametric model and GUI model in ANSYS.

The purpose of this study is to develop the adaptive terminal sliding mode scheme to control a MEMS resonator with a six-powered potential function for tracking a given reference signal in the presence of system uncertainties and external disturbances. The proposed adaptive controller includes the time-varying feedback gains can tackle the nonlinear dynamics without directly eliminating. Meanwhile, these time-varying feedback gains are adaptively updated according to the suitable updated rules without the known bounds of system uncertainties and external disturbances. Some sufficient conditions to guarantee the stability based on Lyapunov theory and numerical simulations are performed to demonstrate the effectiveness of the presented scheme.

Composted sewage sludge can be applied to land to improve soil physical properties and supply nutrients. In this study we use the case of sewage sludge compost applied to the abandon mine located in the Taoyuan Village of Mentougou District of Beijing to supply and illustrate that a new way to improve the mine restoration soil which also could have serviceability to deal with the city sludge. Experimental results showed sewage sludge compost application produced positive effects on the nutrient contents of soil and increased with increasing fertilizing amount.Considering the heavy metals accumulation in mine soil and there availability for crops, the Zn and Hg should be played more attention on the sewage sludge compost application in abandoned mine.

Structural optimization for the highly sensitive mechanical sensor elements was studied. Using Molecular Beam Epitaxy (MBE) technology, three different RTD structures were fabricated on the GaAs substrates. From the I-V characterizations, it can be concluded that, the PVCR of the best design is up to 6, VP is reduced to 0.41V, and then we analyzed the relationship between the device material structure and I-V characteristics, providing a reference for the better performance of RTD structure design.

After carbonized at different temperatures, agricultural waste-rice-husk, becomes carbonized, which has further been modified at different pH values. Through some static tests, we studied the treatment efficiency for the wastewater--containing mechanical lubricants- by the carbonized rice husk at different amounts of carbonized rice husk, different treatment times and different processing temperatures. The results showed that the optimal carbonization temperature of the rice husk is around 500°C, and the pH modification’s impact was not notable. The optimal conditions of the treatment of wastewater containing 10% mechanical lubricant (volume percentage, made by Shell), were found at the amount of 6g/l carbonized rice husk, with the processing time of 15 min, and the temperature of 15°C. Under that condition, the oil removal rate could reach 88.38% and adsorption capacity of the carbonized rice husk is 22.32ml/g; however, when referring to Mobil (model: 20W-40), the oil removal rate could reach 94.24%, which is considerably superior to other kinds adsorbents. Treatment of oily wastewater by carbonized rice husk is in conformity with the second order kinetic equation, and the related coefficient is 0.9671; besides, the adsorption thermodynamic analysis shows that the adsorption process can be spontaneous at the low temperature, which therefore can be used for the oily waste water treatment.

The electron in the RTD has a high mobility with the resonant tunneling effect. We have embedded the RTD in the structure of MEMS sensor using the meso-piezoresistive effect. The sensitivity of sensors is higher one order of magnitude than the accelerometer which used the silicon piezoresistive strip as sensitive unit. In this paper, we optimize the temperature effect of RTD as the sensitive unit of sensors by reducing the size of emitter mesa of RTD structure. In the experiment, the temperature coefficient reduces from 10μA/°C to 5.22μA/°C at the peak, and reduces from 35μA/°C to 13.88μA/°C at the valley. Meanwhile, the temperature effect of bias voltage sensitivity reduces from 6mA/°C to 2mA/°C at the valley. Finally, the reliability and precision of RTD structure used as the sensitive unit of MEMS sensors is improved.

The liquefaction of soil around the pile and the friction resistance between the pile-soil may be greatly affected by the various vibration conditions in the process of vibration piling. The efficiency of the pile may be affected by the above situation. And how to increase the piling speed is the key component studied in related field. The plane contact element is adapted in this paper to establish the system of pile-soil dynamics model. The piling process is simulated by changing the parameters such as, the amplitude and frequency of vibration force, and the stiffness and damping of soil. Then the influence on piling speed by every parameter can be studied. The way to raise piling speed can be achieved, and it provides theoretical guidance for practical application.

In this paper, the energy balance of black liquor gasification (BLG) and coal-water slurry (CWS) gasification was analyzed. The results showed that the conversion efficiency of BLG (43.71%) process was slightly lower than that of CWS gasification (44.71%). Meanwhile, the material cost of BLG to synthesis gas was 0.36 Yuan/ m3 while CWS gasification was 0.69 Yuan/ m3. On account of above analysis, BLG was expected to have similar industrial applied prospect like CWS gasification

The method of using macro-porous absorption resin to rurify coumarins in “Yubaizhi” angelica dahurica was used in this study. A kind of better resin was chosen from D-101 resin and HPD600 resin by the comparison of adsorption rate, desorption rate and purity. The result showed that D-101 resin was better for purifying coumrins. Then these conditions of purifying were discussed. when the sample concentration was 0.1g medicinal materials per milliliter and the adsorbent speed was 1ml/min, the effect of adsorption was better. And per gram resin could adsorb coumarins of 3g sample material. When the eluotropic speed of 80% ethanol was 1ml/min and the dosage of eluent reaches was 7 multiple of bed volume, the effect of elution was better. The result of demonstration test showed the effect of purifying coumarin was better with above-mentioned conditions.

The finite element model of the liner rolling guide of the CNC machine tool is established. Then the natural frequencies and the corresponding vibration modes of the liner rolling guide (LRG) are obtained by analyzing the finite element model (FEM) of the linear rolling guide in two different boundary conditions. By comparing the modal characters of the two states it is proved that the movable joint and bolted interfaces of the rail have certain effects on the dynamic performance of linear rolling guide. Besides, the liner rolling guide also have been tested dynamically, obtaining the modal parameters of the rail guide; finally, the validity of finite element model and the effect of boundary conditions on the interface of the linear rolling guide are verified by comparing the finite element analysis of frequency and experimental analysis of frequency

During rubber processing, many factors can affect the mechanical properties of rubber composite. The influence of ambient temperature and content of titanate coupling agent and modified attapulgite (OAT) on mechanical properties were investigated by preparing rubber composites and measuring. The results showed that the rubber composite which was filled 40phr OAT modified by 3% titanate and prepared at the ambient temperature above 20 had best tensile strength (18.93MPa). There is a special phenomenon that the tensile strength had a rapid increase from 4.72MPa to 18.93MPa, when the content of OAT changed from 20 to 40phr in the experiment.

The Stand-Alone wind energy supply system equipped with a doubly Salient Electro-Magnetic Generator (DSEG) is presented in this paper. First, the analysis of the operating characteristics of wind turbine and DSEG is introduced. Based on the strategy of power signal feedback (PSF), the excitation current of DSEG is regulated, as a result, Electro-Magnetic torque of the DSEG is controlled and the maximum wind energy tracking is achieved. Battery is employed as an energy storage device and interfaced to the wind energy system through bidirectional DC/DC converter. The control strategies of the bidirectional DC/DC are proposed to balance the power differences between the generator and the power the load, so that voltage of the DC bus could be constant under varying wind speed and load. The simulation results show the effectiveness of the control methods.

Keeping wind energy conversion system (WECS) running on maximum power point (MPP) can make full use of wind energy. In this paper, authors put forward a novel hybrid maximum power point tracking (MPPT) algorithm which combines three points comparing (TPC) method with power-signal feedback (PSF) method. WECS based on doubly-salient electro-magnetic generator (DSEG) is used to validate the effectiveness of proposed algorithm. The whole WECS is simulated in Matlab/SimuLink, simulation results obtained confirm that the proposed algorithm is more fast and efficient than TPC method.

Numerical simulation based on finite element modeling is used widely for the prediction of welding residual stress and distortion. Considering this method, the accuracy of the ultimate result of the residual stress and distortion field is depended greatly on the accuracy of the welding temperature field. The APDL languages of ANSYS procedure was used in this study. In order to model the addition of the filler to the weld, element birth and death technology was selected. It well performed to simulate the moving of the heat source and the process of transient thermal convection. The results show that the change process and the distribution of the welding temperature field agree well with the weld reality.

The viscoelastic behaviors of cyclohexane and dimethylbenzene SBS solutions with different concentrations have been investigated through dynamic rheological methods. The effects of solvent properties, concentration, stress and frequency on the rheological behaivors of SBS solutions have been carried out. The results show that the curves of dynamic shear stress tests show two modulus plateau, the dynamic moduli of dimethylbenzene SBS solutions are higher than those of the cyclohexane SBS solutions because dimethylbenzene is good solvent for SBS and the viscoelastic behaviors of solutions exhibit strong dependence on concentration.

The extraction of flavonoids from peony leaves was studied recently. We carried out a research on the optimum technology of extracting flavonoids by single and orthogonal factor experiment. Finally we found the optimum conditions were: the ultrasonic temperature is 60 degrees, the ultrasonic time is 20min, the ultrasonic power is 600w, solid-liquid ratio is 1:25. Under this condition, the yield of flavonoids was 1.47% and the content was 8.34%.

With the rapid development of China's economy and the increasingly serious energy issues, ecological architecture design is becoming more and more important. The article described in detail about the use of Ecotect in ecological architecture design through the method of case study, and extract a strategies of great significance to ecological architecture design.

The assessment of the interaction between a new tunnel and existing residential or office building is an important issue in urban area. In this study, special protection design for existing structures is introduced based on an actual engineering project of urban tunnel closely passing beneath an existing residential building. Cavern-pile construction method and deep grouting technique with ultra-advanced steel pipe are used in this project to efficiently control the settlement of the stratums on top of tunnel. Additionally, the effect of tunneling on the existing residential building is investigated through finite element calculations. The load condition, deformation and stability of the tunnel elements beneath building are also analyzed. Then, on the basis of calculated results, it is concluded that the new tunnel constructed by cavern-pile method causes small ground settlement, therefore it does not considerably affects the existing building. The safety of resident is guaranteed.

The coke reaction index and solution loss reaction starting temperature were tested by the thermo gravimetric test. According to the relationship between the temperature and the index，a new test method, which evaluates coke high temperature properties by the coke solution loss reaction starting temperature, was put forward. The new method has many merits such as expediently operation and reliable results compared with the method and results of the national standard test.

Based on the dispersion characters of organic modified attapulgite (OAT) short fibers in nature rubber (NR) matrix, this paper analyzed the effects, in terms of addition amount of OAT, processing technology of rubber compound and heat treatment, on mechanical properties and anisotropy of OAT/NR composites. Results indicated that mechanical properties were better when the OAT content is 50 phr and thin-passing is 20 times, meanwhile, the longitudinal and transversal tensile strength of OAT/NR composites were 17.01 0.5 Mpa and 14.18 0.5 Mpa respectively. The anisotropy is obvious. Also the tensile and tear broken section were studied by the scanning electron microscope (SEM) and the forming mechanism of OAT/NR anisotropy composites was discussed.