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The interfacial tension (IFT) and contact angles of different oil/solutions were compared to unveil the influence of Mg2+on oil/NaOH interfacial properties. The results demonstrate that adding Mg2+to NaOH solution cannot change the oil/NaOH interfacial tension when enough OH-is provided. While for NaOH-surfactant solution, adding Mg2+changes the IFT dramatically. Adding NaOH to oil/water produces a minimal contact angle at NaOH of 0.02wt%. Adding surfactant or MgCl2alone increases the contact angles. Adding them together produces a synergism to bringing down contact angles gradually with the increase of NaOH concentration. The change of salinity and the reaction among them may be responsible for the influence and synergism.

K/S value is an important parameter of modern colorimetry, which can indicate the depth of the color of dyed fabric surface. Measurement of K/S value is easily and simple operation in the applied engineering. Take Reactive Blue B-2GLN as examples in this paper, the relationship between K/S value and the fixing rate with the reactive dyes on cotton fabric was studied. And the feasibility of K/S value instead of the traditional washing method for the determination of reactive dyes fixation rate was also studied. The results show that: the K/S value of the fabric has good linear relationship to the reactive dyes fixation rate by the washing method and the reactive dyes fixation rate can be get from the K/S correction value.

Preparing of cool wool natural energy storage materials from wool fiber is a feasible and effective method. The structure characteristics of wool and the reason that wool has cool properties were introduced. The preparation principle, preparation methods and properties of cool wool fiber was studied. The preparation methods of cool wool mainly include scale stripping and surface coating. Scale stripping mainly consists of Chlorination, oxidation, biological enzyme treatment and plasma treatment. Surface coating mainly consists of resin finishing and ceramic finishing. Slenderizing and adding energy storage materials are also the effective methods. Wool as a new concept of natural energy storage material is recognized by people.

Polyvinylpyrrolidone (PVP) has been used to control size and shape of metal nanoparticles in aqueous solution, where PVP plays the dual role of protective and reducing agent. The influence of PVP with different molecular weight on the aspect ratio of nanorods and nanowires during a classical polyol process was studied. Nanowires with higher aspect ratio were obtained by using PVP with higher molecular weight. It is suggested that the reduction rate is decreased with an increase of the molecular weight of PVP, leading to the growth of nanowires with higher aspect ratio.

A simple, rapid and accurate method for the determination of fluoride in Antarctic krill has been developed. The fluoride content in Antarctic krill was determined by ion chromatography. The method requires a simple sample clean-up procedure to remove the interfering Cl- from the hydrochloric acid extraction solution. The optimum extraction conditions of fluoride from Antarctic krill samples were obtained by adding 8mL of 1:11(v/v) hydrochloric acid solution and extracting for 60 min. Under these conditions, recoveries of fluoride from Euphausia superba and Penaeus vannamei were 97.9-105.6% and 95.1-101.9%, respectively. The limit of detection was 0.01mg/kg. The method was applied to the determination of fluoride in Antarctic krill. Key words: Fluoride, Antarctic krill, Ion chromatography

shaftless driving is a kind of advanced and new drive way which can solve the high precision of printing synchronism, mainly used in gravure printing, soft printing and wheel transformation printing equipment but less used in sheet-fed offset press at present. Based on sheet-fed offset press as the research object, the author analyzed the transmission characteristics of sheet-fed offset press, designs a scheme of shaftless driving used in sheet-fed offset press and set up the hardware and software platform, verified the scheme by experiments.

Wheat protein composite fiber is a kind of new regenerated cellulose fiber containing protein utilization of wheat bran prepared. The fundamental characteristics of wheat protein composite fiber were studied. The results show that the dry fracture strength is 2.03 cN/dtex and it is lower than that of viscose fiber. It has high moisture regain and low fracture strength and the moisture regain of the fiber is 12.23%. The whiteness of wheat protein composite fiber is lower than viscose fiber. The combustion performance of wheat protein composite fiber is similar to viscose fiber. Compared with wool, the combustion performance is easy. Dyeing properties of the fiber with reactive dyes is excellent and the goods have bright color and good color fastness. The dyeing percentage of direct dyes reached to 90%. The wheat protein composite fiber product is deeply liked by people with its good wearing property, and extensively applied to wear base material with its fine affinity.

The gene encoding an endo-β-1,4-xylanase (XynCC) fromchaetomium cupreumwas amplified using PCR. The nucleotide sequence of a 690 bp cDNA fragment was determined. Based on the nucleotide sequence, calculated molecular mass of the enzyme was 24.7 kDa. The XynCC gene was inserted into the pYES2 vector and transferred into the cells ofS. cerevisiaeH158 for heterologous expression.

This paper discusses a firms performance of proactive environmental technology innovation strategy and reactive strategy based on the model. It is proved that a firm can get better payoff if the manager interpret environmental issues as opportunities, comparing the performance of achieving these two strategies. A firm can profit under better communications with the public by managerial interpretations of environmental issues as opportunities trading off the increasing costs. In conclusion, the shareholder should motivate the manager to interpret environmental issues as opportunities for better payoff.

The surface modification process for coarse wool fiber which was oxidized by KMnO4 first, and then MnO2 covering on the fiber was reduced with Na2SO3 was studied. The method for surface modification of coarse wool fiber was determined from comparative analysis, the optimum oxidation process was as follows: concentration of KMnO4 at 3g/L, time 15min, temperature 50°C, ratio of water and wool fiber was 50:1, and the optimum reduction process: Na2SO3 concentration at 20g/L, time 8min, temperature 55°C, ratio of water and wool fiber was 50:1. Compared with original wool fiber,the breaking strength and fineness of modified coarse wool fiber decreased, while the moisture regain increased from 15% to 18%.

Dating and tracing young groundwater with sulfur hexafluoride (SF6) is a new technology developed several years ago. To study the origin, evolution of shallow groundwater in the core area of Daqing Oilfield, and to analysis the relationship between groundwater migration and groundwater vulnerability, the age of shallow groundwater was calculated using SF6dating technology. The result shows that, (1) the SF6age can indicate groundwater flow conditions of research area, (2) the general trend of SF6age is getting old from the north to the south, (3) the SF6age of most areas is good consistent to the groundwater vulnerability.

The precipitation kinetic and behavior of δ phase in Inconel 718 alloy at 900, 930 and 960°C have been studied using the quantitative X-ray diffraction (XRD) method. The results indicated that the nucleation site and way of δ phase depended on temperature by the observation of microstructures. During the aging process, the δ phase nucleated on the grain boundaries and twin boundaries preferentially, while the δ phase precipitated directly from the interior of grain when the temperature was above 900°C. At a certain aging temperature, the relationship between the δ phase content and the aging time fitted an Avrami-type equation.

In order to get highly monodispersed nanoparticles, a post-synthesis separation of nanopaticles polydisersed in size and shape is often desired, although the experimental conditions for the synthesis of nanoparticles are carefully controlled. Using continuous density gradient centrifugation, Ag nanospheres, nanocubes, and nanowires can be separated from polydisperse samples. Size and dimension analysis by sanning electron microscopy and absorption spectroscopy prove that density gradient centrifugation is a powerful method to obtain monodisersed nanoparticles.

A new scheme for fault identification during power swings is proposed in this paper. The new scheme is based on the orthonormal wavelet transform algorithm. The main advantage of the proposed scheme is that different types kinds of fault of the transmission line can be correctly identified from different types of the fast power swings. Also, the faults during power swings can be identified from the power swings with the proposed scheme without any time delay. Furthermore, the problem whether the protection should trip or not immediately for the distance protection is discussed in the paper. Test results with the data sampled from EMTP verify the effectiveness of the proposed scheme. Furthermore, another advantage of this algorithm is that it can be realized for the real-time applications with finite real calculation.

After analyzing the features of all kinds of CAD software program, this paper reaches such a conclusion: most of traditional bridge-design programs focus on calculating structural load, so nowadays the calculating feature of this software programs is greatly improved. At the same time, a common problem is still with traditional bridge-design software programs, and this problem is all this programs don’t have any model that offer information referred to the bridge being designed, and this problem result in isolation of data in different stage of designing. To solve this problem, this paper proposes that railway bridge CAD software program take ACCESS as core database and AUTOCAD as supporting graphical system, and we should develop new software program on this basis. This paper also propose that bridge-design software program we develop in future should take design knowledge and bridge information referred to 3D geometric data in consideration, so that the design software program can reuse the characteristic component databases and all kinds of information in different design stage.

The study on combustion characteristics of different excess air ratios (λ) and ignition timings was conducted on a lean-burn spark-ignition CNG engine, and the corresponding emission characteristics was also analyzed. The results show that the curve of cylinder pressure moves towards TDC, and the CoVimep decreases with the advance of ignition timing. With the excess air ratio increasing, the CoVimep increases while the cylinder pressure decreases firstly, and then increases. The flame development duration increases with the ignition timing advanced, but the rapid flame duration decreases, the total combustion duration basically keep constant, and all of them increase with the increasement of excess air ratio. Best fuel economy was gotten at λ=1.2. With the excess air ratio increasing, the CO and NMHC emissions decrease, the NOx emission firstly reaches to a peak value, which is about 3000ppm at λ=1.2, and then decreases. Both of the THC and CH4 emissions have opposite trends to NOx emission. All the emissions mentioned above increases with the advance of ignition timing.

Holiota nameko is an edible mushroom widely cultivated in the northeast of China. The cold water, hot water and ethanol extracts were prepared and their antioxidant properties were studied. At 2 mg/mL, the cold water extract showed a high reducing power of 1.502, whereas those of hot water and ethanol extracts were 0.868 and 0.159. With regard to the scavenging ability on DPPH free radicals, extracts were effective in the order: cold water > hot water > ethanol extracts. EC50 values for chelating ability on ferrous ions for cold water, hot water, and ethanol extracts were 1.461, 0.663, and 11.791 mg/mL, respectively. Based on EC50 values, the water extracts of P. nameko were effective antioxidants.

Hot water extracts from Armillaria mellea and Hohenbuehelia serotina fruit bodies were prepared and investigated for their antioxidant capacity in three different assays, namely, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and chelating ability on ferrous ions. Among the two mushrooms hot water extracts, extract from A. mellea was better than that from H. serotina in scavenging ability and chelating effect on ferrous ions. With regard to reducing power, EC50 value of extracts from H. serotina was 0.447 mg/mL, while that of extracts from A. mellea was 1.914. From EC50 values obtained, it can be concluded that hot water extracts from A. mellea and H. serotina were good in antioxidant properties.

The effect of δ phase content on the hot deformation behavior of alloy IN718 has been investigated using isothermal compression tests. The results indicated that the δ phase has a significant effect on the deformation behavior of alloy IN718 during hot working. After the peak stress, the decreasing speed of the stress raises as the increase in the δ phase content. The deformation activation energy for alloy IN718 increases with the raise of the δ phase content. And the peak strain for the alloy decreases with the increase of the δ phase content, which indicates that the δ phase can stimulate the occurrence of dynamic recrystallization during hot working.

The LiFePO4/MWCNTs composite used as cathode was synthesized by ball milling. XRD and SEM experiments demonstrated that MWCNTs didn’t change the olivine structure of LiFePO4and that MWCNTs decentralized into the grains of LiFePO4and working as electric bridge improving the electrochemical properties of LiFePO4. The electrochemical performance of the composite electrodes with different MWNTs in diameter were studied by button cell. The result indicated that the composite with largest diameter MWNTs exhibited best electrochemical performance. The first charge-discharge specific capacity of the composite with MWNTs of 60-100nm in diameter were 136mAh/g-1 and 129 mAh/g-1 respectively at 0.1C rate under room temperature. The difference between charge-discharge platforms of the composite electrode was the least compared to the others. This phenomenon showed that the material had the largest chemical diffusion coefficient of lithium. At the same time, the capacity of the composite only lost 4.0％ after 10 cycles and kept constant after 20 cycles.

Carbon-encapsulated copper nanoparticles were synthesized by a carbon arc discharge method. The particles were characterized in detail by transmission electron microscope, high-resolution transmission electron microscopy, thermogravimetric and differential scanning calorimetry. The result showed that the outside graphitic carbon layers effectively prevented unwanted oxidation of the copper inside. The dispersion behaviors and thermal conductivity of Carbon-encapsulated copper nanoparticles in water with different dispersants were investigated under different pH values. The results showed that the dispersion and thermal conductivity enhancements of Carbon-encapsulated copper nanoparticles nanofluids are higher than that of copper nanoparticles.

The paper would put the content of oral histological pathology and the network together, learning this course more convenient and visualize, initiating the interest of study. Using web pages (flash) and photo editing software (Photoshop) make teaching content vividly and as questionnaire to evaluate effect evaluation. Through digital course of study, the feedback is better, achievement is obviously improved. Digital learning mode applications have a good effect to students.

Localized flaws such as corrosions in petroleum pipelines often cause fragility, impairing integrity and shortening service lifetime of the structures. There has been much interest recently in monitoring the integrity of the pipe structures. Ultrasonic guided waves provide a highly efficient technique for rapid pipe inspection because they can be made to propagate significant distances in pitch-catch configurations. Crosshole tomographic geometry is formed in such pitch-catch configurations when transmits and receivers are respectively laid along two parallel circumferential belts around the pipe. Considering the pipe as an unwrapped plate, we investigate the adapation of the tomographic reconstruction in seismology to the guided wave inspection of a pipe. Various effects such as transducer arrangement, mesh precision, sampling interval and iterative algorithm on tomographic reconstruction are analyzed. The results provide a theoretical basis for quantitative detection of pipeline flaw using guided wave tomography.

Signal enhancement of ultrasonic guided waves is studied using time reversal technique. The defect in pipe is detected by activating single mode guided waves L(0,2) at the center frequency of 70 kHz. Time-reversal technique is used to further enhance the defect detection capability. A method to identify the defect is described on a finite element model. Numerical results show that the time reversal technique has the ability to evidently enhance the amplitude of damage reflected wave and improve the detection efficiency of defect.

Cold water extracts fromHohenbuehelia serotinaandArmillaria melleafruit bodies were prepared and their antioxidant properties were investigated in three different assays, namely, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, reducing power and chelating ability on ferrous ions. Results showed that, at 4 mg/mL, the cold water extracts fromA. melleashowed a high reducing power of 1.540. With regard to DPPH free radical scavenging abilities, EC50value of extracts fromA. melleawas 0.595 mg/mL, while that of extracts fromH. serotinawas 1.649 mg/mL. EC50values for chelating ability on ferrous ions for cold water extracts fromA. melleaandH. serotinawas 0.319 and 0.685mg/mL, respectively. From EC50values obtained, it can be concluded that cold water extracts fromH.serotinaandA.melleawere good in antioxidant properties.

In recent years the rock-socketed continuous concrete walls have been applied in supporting structure of foundation excavation, and the main problem of which is how to simulate m value of wall bottom bedrock. In this paper, the m value of rock-socketed underground continuous concrete wall bedrock is monitored by a structural test about a typical engineering. The monitored data of foundation excavation supporting deformation are fitted by least-square method, and the bedrock m value of which are researched and analyzed based on an optimization method and fitting deformation curves. The test shows the monitored m value meets the corresponding engineering regulations and is related with the broken degree of rock on the monitored position, and the variability of which is lesser in the construction process.

This paper expounds the developing stage of the theory on risk management for the construction project at home and abroad, and proposed future research direction. Constuct the product has compared with other products large-scale, long period, production of single characteristicses, such as piece and complexity...etc., in the process of carrying out in exist many factors of indeterminations, therefore have larger risk than the general product production. However, the construction engineering risk management level of our country still pretty much fall behind, is the weak link that the our country constucts realm, haven't formed effective construction engineering risk management system, make construction engineering dispute have occurrence and continuously get stripe. Therefore, establishment effective of the risk management system seem to be is importance.

The feasibility of two new methods to reinforce the perforated section steel column was verified by two groups of axial compression tests, each group contained two specimens. The test results showed that reinforcement plates and original steel skeleton can work together effectively before specimens overall yielded whether front fillet weld or weld all around was adopted for the connection of reinforcement plates with the steel skeleton. After most of the measuring points on reinforcement plates yielded, reinforcement plates by front fillet weld plumped outward and deformed rapidly; however, no notable deformation was found for the reinforcement plates by weld all around. From the load–displacement curves of the specimens , the yield load of the section steel column by weld all around was a little larger than that of section steel column by front fillet weld. In general, the connection of reinforcement plates with the steel skeleton by weld all around was better than that by front fillet weld.

Three perforated steel skeleton joints reinforced by a new method were tested under low cyclic load. The results indicated that the perforated steel skeleton and reinforced plate could work together well and the connection by weld all around of the reinforced plate with the perforated steel skeleton was effective. The test results proved the feasibility of the proposed method for the perforation and reinforcement of section steel, which provided a basis to the further study.

In this paper，electroless Ni-P plating on copper substrate at 50 °C in ultrasonic field was carried out. The frequency of ultrasonic waves was 40 kHz. The effect of ultrasonic on the composition, plating rate and morphology of Ni-P deposite was investigated at the ultrasonic power of 40, 70 and 100 W. The experimental results showed Ni-P deposit could not be obtained without ultrasonic field at 50 °C. The content of nickel and the thickness of Ni-P deposit increased with the ultrasonic waves power increase. Ultrasonic irradiation power remarkably refines the nodule size of Ni-P particles. The collapse of cavities in solution seems to suppress the Z-direction growth of the nodule.

The microwave permittivity and permeability of Carbon Nanotubes (CNTs)/paraffin and CNTs-Co(C)/paraffin were measured respectively and their differences were discussed in detail. Furthermore, the reflection losses for double-layer CNTs (CNTs-Co(C))/epoxy coatings, with the thickness ranged from 1.6-2 mm, were practically tested through Arc Method in 2.6-18 GHz frequence range. The results indicated that the reflection loss peak shifted towards low frequency and the peak value decreased with the coating thickening and possible mechanisms for the phenomena were given.

The corrosion properties of several common artificial reef materials were studied using electrochemical methods and by measuring corrosion rates in estuary water and seawater. Experimental results show that the 6063 aluminum alloy can be a reef construction material only in low velocity estuary water. Copper in seawater has high corrosion potential and can be passivated, but the high velocity water will destroy the passivation film and decrease the corrosion resistance of copper. Copper is a suitable reef material in low flow seawater and estuary water. With low open potential, high anode current and extensive corrosion, Q235 steel is only suggested as artificial reef material if applying sacrificial anode protection. Pine block and granite are natural materials whose degradation products won’t harm the environment, but the pine block has short service life while granite has a minimal corrosion rate. PVC has small corrosion rate but leaches toxic substances after degradation, so it is not suitable for wide-ranging use.

Laoying Tea, leaves of Litsea coreana L., is conventionally consumed as healthy tea beverage in southern China for hundreds of years. The ethanolic, cold water and hot water extracts were prepared and their antioxidant properties studied. At 160 µg/mL, the cold water extract showed a high reducing power of 1.056. With regard to the scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals, extracts were effective in the order: ethanolic > cold water > hot water extracts. EC50values for chelating ability on ferrous ions for ethanolic, cold water and hot water extracts were 10.23, 0.85 and 1.12 mg/mL, respectively. Total phenols were the major naturally occurring antioxidant components found and were in the order: cold water > hot water > ethanolic extracts. Based on EC50values, the various extracts from laoying tea were effective antioxidants.

Chroogomphis rutillus is an ectomycorrhizal edible mushroom available in China. The ethanolic, cold water and hot water extracts were prepared and their antioxidant properties studied. At 4 mg/mL, the ethanolic extract showed a high reducing power of 1.561, whereas those of cold water and hot water extracts were 1.161 and 0.808. With regard to the scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals, extracts were effective in the order: ethanolic > cold water > hot water extracts. EC50values for chelating ability on ferrous ions for ethanolic, cold water and hot water extracts were 15.755, 0.059, and 0.067 mg/mL, respectively. Based on EC50values, the various extracts from C. rutillus were effective antioxidants.

50% (V/V) ethanol extract from laoying tea (Litsea coreana Level.) was fractionated by liquid-liquid partition using ethyl acetate, n-butanol and water, respectively. The activities of nitrite scavenging (NS) and nitrosamine formation inhibiting (NFI) of three different fractions have been investigated in vitro systems. In the above assays, all the fractions showed NS and NFI potentials to varying degrees. With regard to NS activity, fractions were effective in the order: ethyl acetate > n-butanol > water fraction. EC50values for inhibiting ability on nitrosamine formation for ethyl acetate, n-butanol and water fraction were 0.170, 0.554 and 0.725 mg/mL, respectively. Total flavonoids could be the major NS and NFI components and were in the order: ethyl acetate > n-butanol > water fraction. Based on EC50values, laoying tea especially ethyl acetate-soluble fraction may have a preventive effect against carcinogenesis induced by nitrosamines.

Electronic information technology is based on expression, storage, transmission, and process of information. Information expression is usually generalized as information coding technology, one of whose heart theories is combinatorial number theory in algebra. In the process of storing, transmitting, and processing of electronic information technology, problems about encryption and safety need to use algebra theories of group, ring, and domain. It is thus clear that algebra is very important in electronic information theory. This paper makes use of abelian group basic theory of algebra, together with combination number theory, discusses construction problem of normal sequence in of abelian group, and gives several sufficient conditions for a guess establishment of W.D.Gao.

JDF is the XML-based format for the job descripting and exchanging. Through the Parse of JDF document’s grammar and data structure, we have got the information of layout. Combined with technical features of cutting papers and experiences of artificial processing paths, this article have to analyze the characteristics of irregular layout, then put out a new complex algorithm of cutting path and solve the planning of irregular layout cutting path. Development a optimization software of paper cutter. The cutting software based on JDF digital workflow, can obtain layout information directly from the prepress, and then transmitted generate cutting program to the cutter, which reduced the error caused by manual measurement and improved the cutting accuracy and efficiency.

In the contact area of offset, a relative slide occurs between the surface of plate cylinder and blanket cylinder, which changes the print image and influences the printing quality. The relative slide in the cylinders’ rolling process is investigated, and the determination rule of cylinders’ geometric parameters of offset press is proposed. The results show that the relative slide is minimization under the condition that the compression of elastic cylinder radius is 0.2 times bigger than that of rigid cylinder radius, and the deformation of print image and dot gain both are minimization. The results provide theoretical direction for accurate determination of cylinder radius of offset press.

Seismic performance of corner joints without seismic details was analyzed by software ABAQUS, the results indicated that the reinforcement ration of the girders has great effects on the failure process and seismic behavior of corner joints. Beam Haunch Method was used to strengthen these joints, and then finite element analysis was conducted for the joints with unidirectional haunched beam (UHB)and bidirectional haunched beams(BHB). It was found that the bearing capacity of joints was significantly improved but the ultimate displacement and ductility factor were slightly affected by the haunch strengthening. The strengthening effect of bidirectional haunch was obviously superior to that of unidirectional haunch.

Silver plating cenosphere powders were developed by electroless plating method. After being mixed with silver plating cenosphere powders and curing agent, silicone rubber composites was obtained. The surface morphology, microstructure and cross-section of Ag-coated cenosphere powders and composites were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The influence of different concentration of Ag-coated cenosphere powders on the conductivity, electromagnetic shielding interference effectiveness and mechanical properties of the silicone rubber was discussed from the point of view of condition of Ag-coated cenosphere powders and silicone rubber. The results showed that the smooth and compact silver coating was deposited on the surface of cenosphere powders. The Ag-coated cenosphere powders possessed good oxidation resistance and enough strength to resist being crushed during the preparation of composites. The adhension between the silver film and cenosphere powders was good. There existed the extreme shielding effectiveness (SE) of silicone rubber composites filled with Ag-coated cenosphere powders. The electrical conductivity no longer plays an important role in enhancing the SE of composites when the SE of composites reaches the extremum. When the content of the Ag-coated cenosphere powders was 180 parts per hundred of rubber (phr), the SE values of composites were typically above 80 dB and close to the extremum across the tested frequency range from 2.6 GHz to 3.95 GHz. And the mechanical properties of composites with 180 phr were not degraded obviously.

Carbon nanotubes (CNTs) of different diameter were synthesized by chemical vapor deposition using LaNi5 alloy of micrometer magnitude as catalyst. High-power ultrasonic grinder was employed to disperse CNTs for various time. CNTs with different dispersion levels were obtained and their impacts on the performance of CNTs supercapacitor electrode were researched as well. Constant current charge-discharge, Cycle Votammetry was employed to study the supercapacitors properties of carbon nanotubes. And the results showed that the specific capacitance of CNTs electrode without ultrasonic was 95.88F/g. However CNTs electrode has preferable electrochemistry properties with 16 hours ultrasonic dispersion, CNTs diameter about 30-50nm and well dispersibility: the specific capacitance had enhanced 69.9%, as high as 162.88F/g.

Lead-free solder is meeting the requirement of environmental protection, but the property performance of existing lead-free solder is hardly comparable to those of lead solder. In this paper, 0.6% Bi was added into SnXCuNi solder alloy to produce lead-free solder at low cost and high performance. Microstructure, phase composition, melting point, wettability and characteristics of weld interface have been studied and analyzed. The results show that SnXCuNiBi solder alloy are mainly composed of βSn, SnX, Cu6Sn5 and SnBi. The addition of Bi reduces the melting point and improves the wettability of the solder. The main component of the joint interface of SnXCuNiBi/Cu system is Cu6Sn5, which has shown the capability to keep relatively high shear strength at the joint interface.

The polyethylene/montmorillonite (PE/MMT) nanocomposites were prepared by melt blending the organic MMT with the ternary-monomer graft copolymers of polyethylene (GPE) which were prepared by solid phase grafting maleic anhydride, methyl methacrylate and butyl acrylate onto PE. Fourier transform infrared spectroscopy was used to characterize the structure of GPE. X-ray diffraction patterns and transmission electron microscopy were used to characterize the morphology of GPE/MMT nanocomposites. Results showed that GPE was an outstanding polymeric material to prepare an exfoliated polymer/layered silicates nanocomposites due to the high polarity of GPE and high graft degree. Most layered silicates still maintain the exfoliated and well dispersed state even at 40 phr OMMT content. The exfoliation of layered silicates was attributed to the well intercalation and easy wetting of the grafted oligomers.

With methyl vinyl silicone (MVQ) as the base rubber, filled with self-synthesized carbon coated aluminum nanoparticles, the high thermal conductive composite was prepared by using the method of mechanical blending. The effect of carbon coated aluminum nanoparticles on thermal conductivity and coefficient of thermal expansion (CTE) of the silicone rubber were investigated, and it was found that thermal conductivity of the composite increased with increasing carbon coated aluminum nanoparticles content during the process of thermal conductive network initially formed to throughout the whole composite, the thermal conductivity began to decrease when the filling content reached 250phr,the optimum filling amount of carbon coated nanoparticles was 250phr.The Y-Agrai model was employed to investigate the thermal conductivity of the thermal conductive composite, results indicated that when the filling content was less than 200phr,theoretical value was coincided with measured value. While the filling content was more than 200phr, theoretical value was gradually less than measured value. While the carbon coated aluminum nanoparticles content increased, the coefficient of thermal expansion (CTE) of composite decreased significantly.

Aligned carbon nanotubes (ACNTs) array is synthesized by plasma-enhanced hot filament chemical vapor deposition of the stainless steel substrate covered by ferric nitrate. The morphology and structure of the carbon nanotubes array are characterized by Scanning Electron Microscope and Transmission Electron Microscope. Cyclic voltammetry, constant current charge-discharge technique are employed to test the electrochemical performance of the button-like super-capacitor fabricated using the ACNTs array as electrode. The specific capacitance of the ACNTs array electrode reached 160.9F/g in the potential range of -0.2~+0.8V, at a scan rate of 1mV/s in 1mol/L Na2SO4 aqueous electrolyte.

Soft sensing technology is one of the topics of general interest in study on current process control, which has recently drawn considerable attention worldwide, and has stimulated researchers and engineers to make greater effort to reduce the cost/benefit-ratio for development and manufacture of bio-industrial processes both economically and environmentally. This paper introduced a kind of soft-sensor based on an improved support vector machine (SVM) for a polyacrylonitrile productive process. The improved SVM called the multiple kernel support vector machine was presented, and the mathematical formulation of multiple kernel learning is given. Through the implementation for average molecular weight in polyacrylonitrile productive process, it demonstrates the good performance of the proposed method compared to single kernel.

Percutaneous transluminal coronary angioplasty(PTCA) has become increasingly important in the therapy of coronary artery disease. However, the high restenosis occurrence of 20%～30% in patients limits the applications of this method, but the pathogenesis of restenosis has not yet been fully understood.In this paper, static organ culture system was set up to study the process of restenosis formation after PTCA. The common carotid arteries of atherosclerotic rabbits after PTCA were cultured in the artery organ-culture system and maintained in culture for 7 days. After 1d, 2d, 3d, 4d, 5d, 6d and 7d, MTT-test showed that the activity of vessels in the organ culture system unchanged. Pathology and histological technic were applied to check the intimal morphology especially the endothelial denudation and intimal hyperplasia. The concentration of chemical cytokines NO releasing in the process of restenosis were measured .The results showed the method of static organ culture could be successfully applied to keep the activity of culture arteries and study the process of restenosis formation after PTCA. The endothelial denudation and inflammatory cytokines releasing had intimately relationship with the restenosis after PTCA.