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In recent years, radionuclide monitoring and contamination control have been attached great importance. Wide attention has been paid to the measurement and analysis of Neptunium (237Np) as one of the radio-nuclides. With the development of mass-spectrometry technique, the inductively coupled plasma-mass spectrometry (ICP-MS) technique, with its outstanding advantage, has been widely applied to the measurement of237Np in environmental and biological samples. In this paper, the progress in analysis of237Np in environmental samples with ICP-MS technique is overviewed.

Ultrasonic shot peening (USP) on AALY12 sheet was studied. Several parameters (arc heights, surface roughness, surface topography and micro hardness) with different USP process parameters were measured. The research proposes that radius of curvature of shot peened sheet increases with time and electric current decreasing, while increases with pin diameter increasing, and radius of curvature reaches a saturation level after a specific processing time and electric current. An empirical model of the relationship between radius of curvature and pin diameter, electric current, time was also obtained. The research shows that the increment of surface and vertical micro hardness of material is more obvious with longer time and higher value of electric current, which can be up to 20% and 28% respectively.

A facile synthesis method of three dimensional reduced graphene oxide (RGO)/multiwalled carbon nanotubes (MWCNTs) hydrogel was introduced. Hydrogel samples which were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM) and examined by X-ray diffraction (XRD) have been used as the electrode of supercapacitor. Cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) were used to investigate the Supercapacitors which we have fabricated. Because MWCNTs inserting into layers of RGO homogeneously prevent the layers of RGO from stacking and enlarge the specific surface area of graphene, the specific capacitance of RGO/MWCNTs material has been greatly improved. At the current density of 0.2A/g, the specific capacitance of RGO/MWCNTs electrode is about 176F/g, which means a 52% increasement compared to which of pure RGO material electrode. And the specific capacitance of RGO/MWCNTs also achieves a good rate property.

With the development of economic globalization and Industrial modernization, the problems of Environmental pollution and pollutants transponder have become diverse and serious. Under the premise of the "super national organizations absent, cooperation is considered the key to solve the global environmental predicament effective means. Through the game theory to establish the regional trade and environment related analysis framework, which proved the mechanism not only could ensure international trading profits, at the same time, it can effectively solve the hitchhike behavior in the process of regional environmental cooperation. In order to achieve effective incentives for regional environmental governance action, promote the regional environmental cooperation, then effectively incentive the regional environmental governance activities, and promote the regional environmental cooperation.

Metal rubber is a new type of elastic damping material. It’s often used in all kinds of instruments and equipment to vibration isolation and buffer. The internal of metal rubber is mesh structure in space formed with wires. The contact points of the crossed wires aren’t solid collusion. Although the compressive strength of metal rubber is very good, but the structure of metal rubber would become loosly and destroyed under tensile load. Literature [1] put forward that the pulse discharge sintered to metal rubber can make the contact point transform to solid collusion. The method is based on the theory of resistance welding to the contact points between sintering metal wires in metal rubber. The research and analysis to the electricity characteristics of the metal rubber has important significance to optimize parameters of electrical pulse discharge experiment and improve the quality of sinter.

The role of bill of material (BOM) was firstly introduced. Then, the techniques of how to establish modular BOM in multi-products enterprise was analyzed to realize accuracy and just-in time delivery of materials.

Plane-generated double enveloping hourglass worm pair has unique characteristics of double contact line; it has the advantages of wide tooth working area, large bearing capacity, and long service life, etc. However, its development has been restricted by such factors as difficulty in measuring, worse processing precision, etc. In this article, a modeling approach is presented in order to obtain the meshing point’s coordinates of the plane–generated enveloping hourglass worm based on theoretic analysis and computer-aided design principle. And a measuring equipment system is designed to measure the meshing point’s coordinates. Key errors of this worm have been discussed and obtained by comparing the theoretic coordinates and the measuring coordinates. Finally, an experimental study has been carried out to validate the modeling method and measuring equipment system.

The hydroforming process of differential gear box for automobile under axial compressive load and internal bulging pressure was simulated and the load paths were optimized. The hydroforming process is divided into two steps. The deformation under different load paths was investigated using dynamic explicit finite element method. The distribution of equivalent strain and thickness was investigated as well. The simulation results show that the forming path for the first step is optimal when internal pressure changes linearly from 37MPa to 65MPa with the axial displacement.

Sequencing Batch Reactor (SBR) wastewater treatment process has lots of characteristics, such as randomness, time-varying characteristics, complexity and so on. In order to solve the above problems, a predictive PID control method based on DMC and ordinary PID for SBR wastewater treatment process dissolved oxygen (DO) control was proposed. The simulation studies were conducted with the MATLAB in a sewage treatment plant. The results showed that the proposed predictive PID control method was robust and jamproof. Meanwhile, the wastewater treatment system also had a strong capacity of shock load.

Hybrid genetic algorithm has been proposed in this paper, which is proposed by combining standard genetic algorithm with hill climbing to solve the unconstrained optimization problem, which can get global optimization results of the firepower assignment, and provide decision support for the firepower assignment.

The frame column and frame structure with column end of steel-concrete composite joint is a new-type architectural structure. To obtain the mechanical property of the new-type frame column and frame structure, comparative tests between 6 new-type columns and 3 ordinary columns and comparative tests between new-type frames and ordinary frames are carried out. This paper elabrately introduces the specimen design, experiment load, test program, test results and others. Thus, the transformation and failure characteristics of new-type long and short columns at different axial compression ratios and the transformation and failure characteristics of new-type grames at different prestresses are obtained. They are respectively compared with the ordinary long and short columns and frames. Results show that the seismic performance of the new-type column and frame structure is obviously superior to that of the ordinary ones. The tests can achieve the expected test objectives and are proved successful.

Frequency measurement circuit based on PIN photodiode was designed to detect laser parameters in real time. The light intensity is decayed by the optical glass fixed in the front of the laser capsule. Photoelectric conversion is achieved by the photodiode. After being processed through the conditioning circuit, the electricity signal is transfered to the microcontroller which calculates the pulse frequency by counting the pulse number in interrupt mode. This system is enable to monitor the state of high-power laser in real time. By testing the whole system, the frequency measurement precision turns out to be less than 0.02%. The sensitivity of this measurement circuit is higher than 0.9V/mW, while the response time is lower than 3ns.

In combination with field blasting vibration tests in Daiyuling 2# Tunnel, abundant field monitoring datum have been obtained, in order to predict the strength of blasting vibration and research the control problem about stability of surrounding rock. Through the evaluation on blasting affects of the first excavated tunnel when the last excavated tunnel in the initial stage is into tunnel hole, establish the relationship of blasting vibration disturbing degree both neighborhood tunnels to improve the accuracy. Acoustic testing technology has been adapted to test rock acoustic velocity with blasting from beginning to end. The experimental results show that: (1) rock has a larger effect on attenuation effect in the spread of seismic wave, and blasting is really damage the surrounding rock; (2) regression analysis with the formula reflecting correctly the real situation on the blasting stress wave attenuation; (3) compared with blasting vibration attenuation coefficient both the left tunnel and right tunnel, the blasting vibration damage in soft rock is more than in hard rock; (4) the most dangerous location caused by tunnel blasting excavation is the adjacent tunnel blasting face, and its velocity is 5.8845 cm/s, it is practical and feasible that the clear distance of neighborhood tunnels should keep in 21m.

The issue about choosing the point of interconnection is important to reduce the impact of Photovoltaic generation to the power grid security and investment. Here we present a model to identify the optimal point of Photovoltaic generation interconnection, based on the identification method of the critical elements in the complex network theory. In the model, the critical threshold is used as the measure index which reflects the minimum capacity of power grid to maintain every element stable operation. The simulations are carried out in the IEEE-118 power system, the IEEE-145 power system and the IEEE-162 power system, and the results show that the nodes with relative large electrical betweenness are good choice of the Photovoltaic generation interconnection points and the generation nodes are better choices compared to the transmission nodes. The work may have a certain guiding significance for the selection of Photovoltaic generation interconnection point and the planning of power system.

This paper studies the synchronous control strategy which can meet certain dynamic performance and the closed loop robustness to external disturbance in servo system. This servo system has two same PMSMs which are used in a new CNC molding machine for forming grinding wheel. To achieve high-precision of the machine, we designed the hardware construction of the servo system. At the same time, this paper proposes a synchronization control scheme based on cross coupling control algorithms. The performance of the cross-coupled system is theoretically analyzed and simulated. It was proved that this synchronization control scheme has quick response, robustness and small dynamic process synchronization error, which could meet requirements of the high-precision synchronization control.

Informatization is becoming the most dynamic driving factors in China's tourism industry. The paper takes the development of tourism informatization in small and medium-sized cities as the research object. The study shows that lacking of consciousness of tourism e-commerce and information talent, insufficient funds into tourism informatization construction, unified standard in various departments has become the bottleneck of tourism informatization construction. Finally, the paper provides some countermeasures to speed tourism informatization construction in small and medium-sized cities, including establishing related policies and regulations of tourism information, building a main framework of tourism information system which is controlled by the tourism authority, increasing capital investment, and intensifying the training of personnel.

The decarbonized strips of high permeability grain-oriented silicon steel were annealed at different temperatures in a furnace after rolling at the ratio of 21.1%. The changes of the structure and the texture were analyzed by optic microscope and X-ray diffraction. Results show that the grains are easy to grow up and coarse after annealing, while the texture of the strips changes gradually from {111} to {118} and rotary cubic texture as the annealed temperature rises. The mechanism is that at a relatively lower cold rolling ratio, the distortion storage energy of the ferrite grains in the directions of {118} and {100} is higher than that of the {111} grains so that the texture can form after a suitable annealing process.

With the upward climbing of the Chinese fashion luxury goods market for about 30 years, China have become one of the world's biggest markets. This situation makes the research on the Chinese fashion luxury goods markets and consumer groups instructive. In this paper, the formation and development of Chinese luxury goods market were represented and analyzed. By using the methods of internet questionnaires and depth interview the consumer groups segmentation of Chinese fashion luxury goods were researched, 10 groups were got and their respective expectation elements of fashion luxury goods were researched and obtained. Some suggestions were given as reference to the design and marketing promotion of fashion luxury goods in China.

Raspberry Pi is a credit card sized Linux computer based on ARM11 architecture. Because of its small size, low power consumption and powerful performance, a robot controller is a suitable role for it to play. As a robot with artificial intelligence, speech recognition for controlling the robot and voice feedback to users is key parts of the entire system. In this essay, a robot called Lisa is assembled, and a speech control and interactive system is implemented based on Google voice API which is a voice recognition engine provided as a cloud service. In order to analysis complex voice commands, a semantic method is developed to catch key words from command sentences. Then try to make a pattern match between key words and instruction set build-in the robot control system. The speech recognition control and interactive system is effective and well behaved after experimental verification.

A series of N-(pyridin-4-yl) salicylamides derivatives were prepared through acylation of the corresponding acetylsalicyloyl chlorides with substituted 4-amino-pyridines. These compounds might serve as prospective wide-spectrum antimycobacterial substances.

Conjoint analysis is a method for estimating the relative importance of product attributes and utilities of different levels of a defined product. This research focused on finding out about the concerned attributes and preferable levels of professional badminton sportswear when purchasing and then building the preference models of seamless badminton sportswear. Two questionnaire surveys had been done in this research. Questionnaire I is the basis for getting the top ten attributes that target customers concerns when purchasing. Combined the top ten attributes with development direction, questionnaire II was designed for conjoint analysis study. Totally 20 respondents willing to buy professional badminton sportswear were asked to give his/her purchase intent score for 18 hypothetical product profiles derived from orthogonal design. As results of conjoint analysis study showed, the most preferred levels are light color, tight fitness, raglan sleeve, seamless-knit, good tactility, good moisture absorption and ￥299~400. The preference model of seamless badminton sportswear can be two kinds: relatively higher price and relatively lower price. They all have good cost performance and the relatively higher kind has good moisture absorption and good tactility, the relatively lower kind has preferable good moisture plus anti-bacteria and preferably tactility.

The waveforms of the RTDS(Real Time Digital Simulator) commutation failure and ABB MACH2 system commutation failure protection have been combined to analyze the mechanism of HVDC commutation failure. Several reasons for inverter commutation failure have been found, and a detailed analysis is also been given for the missing pulse and commutation which are caused by the AC system fault. This is practical for HVDC transmission project.

Knitted-dapped metal rubber was developed to solve problems of metal rubber with low stiffness and test samples with different sizes were manufactured. Static tests and dynamic tests were carried out to study influences of density and thickness on the static stiffness and influences of frequency, amplitude and preload on dynamic characteristics. Results show that static stiffness rises when density or thickness increases. Frequency has little influence on dynamic characteristics. Knitted-dapped metal rubber will have smaller stiffness and better characteristics of damping, if amplitude increases; if preload increases, energy consumed in the vibration will be more.

Chose high-chromium cast iron as the material to make the mud pump shell, the composition of high-chromium alloy has been optimized and five kinds of alloy ( A, B, C, D and E) are designed. Furthermore, using the heat treatment method of air-cooled quenching of 1040°C + 260°C tempering, the relationship among material hardness, the impact toughness and the heating temperature is analyzed after heat treatment. Finally, the abrasion performance of wear-resistant materials is tested. The test result shows that all kinds of wear-resistant materials display well anti-abrasion performance, where the material E has the best relative wear resistance and 19.3% higher than the imported pump casing material. The results provide a scientific standard for selecting the practical wear-resistant materials and locating the piece casting bivalve pump of Cr26 high-chromium cast iron.

in the River, velocities of surface water flow typically are larger than the near-bottom flow. Combined with background of artificial disturbance sediment, surface water flows is taken to the river bottom to loose and raise sediment, dredge and so as to achieve the purpose of slowing river siltation. Preliminary tests showed that using low-power diversion disturbing sand dredging system, flow velocity of disturbing nozzle is larger than the incipient velocity of sediment, and the purpose of disturbing sediment and sediment transport can be obtained.

According to analysis of operation condition and failure mechanism of converter hood, we designed a protective coating material and sprayed on the converter hood of Tianjin Iron & Steel Group Co. Ltd. by supersonic arc spraying technology, extended the working life of the converter and increased the output and benefit.

Pipe drainage system is used mostly on urban area, but under the pressure of the rapid urbanization, the disadvantages of traditional pipe drainage system are more and more serious. Analyzed the urban rain flood utilization situation in China and foreign countries, and main problems of traditional pipe drainage system in China, the key technology of comprehensive utilization for urban rain flood is put forward, which contains the multi-function tunnel building based on the concave green fields constructing, permeable bricks laying, reservoir constructing for rain flood collecting. This method can effectively prevent the drought or flood disaster due to inadequate or extensive rain volume and can make full use of rain flood resources too.

As the installed capacity of photovoltaic power station is growing, the power prediction techonology is of great important to reduce the random damage to the power system. A prediction model using neural network is proposed in the paper, the solar radiation model is adopt to ensure the accuracy of the prediction results in clear sky contions.Through the analysis of photovoltaic power station output power influence factors, the the solar radiation intensity, humidity and temperature are chosen as the input of the neural network prediction model.At the same time, in order to improve accuracy the photovoltaic power station power prediction model, the power adopt numerical weather forecast information. And the prediction model is tested by the photovoltaic power station historical operation data, and the short-term power prediction has a good performance.

According to the actual situation of heating furnace in Tianjin Tiangang United Co. Ltd, we designed a scientific and feasible solution of screw expanding power generator and auxiliary facilities matched, realized waste heat utilization of low-quality heat source from iron and steel industry exhausted, analyzed energy saving and environmental protection social benefit and good economic benefit that this solution have.

AZ31B magnesium alloys were treated by plasmaelectrolytic oxidation (PEO) technique using an environmental friendly electrolyte solution under single-polar pulse power mode to improve the coating performance. The effect of applied voltage on the coating qualities was studied. The coating surface and the cross-section morphology were characterized by scanning electron microscopy (SEM), and the corrosion resistance was tested by potentiodynamic polarization.The coating surface is porous, and the pore size in the coating layer grew with applied voltage increased. The potentiodynamic polarization tests showed that PEO coatings exhibit significantly improved corrosion resistance as compared with uncoated magnesium substrate AZ31B, decreasing the corrosion current density by three orders of magnitude. The anti-corrosion performance of the PEO coating was improved with the operation voltage increasing from 240 V to 280 V, and at voltage higher than 280 V, there is no further improvement on the coating electrochemical property. The optimal operation voltage was 280 V, which exhibits the most high corrosion resistance.

Cavity walls structure is unsuitable in cold area for its faultiness of poor heat-insulating property. But the cavity walls constraint masonry construction is suitable in cold area for its high heat-insulating property. Studies are carried as setting up the restoring force model of the cavity walls confined masonry structure and analyzing the dynamic time-history of cavity walls constraint masonry structure under 7 degrees small earthquake, middle earthquake or large earthquake through EL centro wave, TALF wave, Ninghe wave and Qian'an wave, which indicates that cavity walls constraint masonry construction can satisfy seismic demand of 7 degree quake. Finally, the formula for calculating the interlayer displacement of cavity walls confined masonry structure near collapse is put forward and the counting result is compared with that of dynamic time-history analyzing, which shows that the accuracy of this formula is high enough to be used for analyzing the seismic performance of cavity walls constraint masonry structure. Foundation projects: Special Basic Scientific Research for Central Public Institute (2008B002, 2010A04), Open Fund of Key Laboratory of State Education Ministroy on Urben and Engineering Safe and Disaster Diminish & Key Laboratory of Beijing on Engineering Seismic and Treatment (EESR2010-07), and High Level Talent Support Project of Heilongjiang University (HDTD2010-13).

The V-doped TiO2 nanoparticles were successfully prepared by sol-gel method and characterized by X-ray diffraction (XRD), UV-vis spectroscopy and photoluminescence (PL) spectroscopy respectively. It is found that doping V can shift the absorption edge to the visible light region and decrease the recombination of photo-induced electron-hole pairs. Then the photo-absorption and photocatalytic activity were greatly improved. The optimal doping concentration is 0.5% due to synergetic effect of the recombination of electron-hole pairs and adsorption of dyes molecules at the surface of samples.

A series of N-(pyridin-4-yl) salicylamides derivatives were prepared through acylation of the corresponding acetylsalicyloyl chlorides with substituted 4-amino-pyridines. These compounds were evaluated in vitro for antimycobacterial activities against Mycobacterium tuberculosis (TB) and Mycobacterium avium (A) by the minimum inhibitory concentrations (MIC) values. Eight of the compounds exhibited lower MIC against A than isoniazide (INH). Meanwhile, four of the compounds exhibited good anti-TB activity, when they were compared with INH. Antimycobacterial activities of N-(pyridin-4-yl) salicylamides were influenced by the balance between hydrophobicity and electron-withdrawing substituent effect on the phenyl and pyridine ring. These studies show that these compounds might serve as prospective wide-spectrum antimycobacterial substances.

Based on the thermodynamic calculation, the reductants to reduce V2O5 were selected, 0.1% V were added into steels by reducing V2O5 during the smelting process. The yielding rate of vanadium was calculated by chemical analysis data. The yielding rate is 98.17% when using Si+20%C as reductant and is about 94.94% when using Al+Mg as the reductant. By comparing the inclusion morphology and composition, contrasts the Brinell hardness and tensile strength of steels using different reductants, it was found that when using Si+20%C reductant, the inclusions in the steel is larger in amount, smaller in size and higher in Brinell hardness and tensile strength.

As a continuation of our research and with the aim of obtaining new antibacterial agents which can improve the current chemotherapeutic antibacterial treatments, a series of quinoxaline-1,4-di-N-oxide derivatives were synthesized and evaluated for antibacterial activity against bacterial growing in macrophages in vitro. The results indicate that the new compounds exhibited a good antibacterial activity. Also, the potency and low toxicity of these compounds make them valid leads for synthesizing new compounds that possess better activity.

An engineering case based three stages teaching mode is presented by issue bring forward, question analyzes and problem solve. From the perspectives of teaching through case, constructivism, cognition psychology, authors analyzed the function of teaching mode in cognition process mode and its control rules, emotion stimulating, and knowledge constructing as well. With the help of teacher in implementation of case design and class organization in Modern Quality Engineering(MQE) teaching, the three stages teaching mode has shown a significant effect on approaching to the objectives of education and teaching in inspiring students to learn and apply knowledge, as well as develop their ability initiatively. The three stages teaching methodology can be used as a helpful reference for young teachers in teaching effect improvement further.

The coupler mechanism is a key component of vehicle connection. The geometric shape of parts are very complex. Between the working parts there is a certain clearance, and mechanism function is implementated by the collision contact of these parts. So, it is very difficult to analyze how coupler works exactly. The RecurDyn software, the latest research results of multi-body dynamics (MBD), is used for modeling and simulation. The working state of the coupler device was reproduced in the software. The modeling and simulation of coupler irregular mechanism was created by using the rigid-flexible hybrid MBD system. Through the simulation results, including main parts parameter curves about mass centre motion, force curves on the joints, contact force between parts, and key components stress concentration area as well, the functional reliability and the structural reliability of coupler were analyzed in operating environment. Applying the MBD theory and technology above, the structural and functional reliability can be predicted for coupler liked complex mechanism.

Firstly, this paper introduces the characteristics of the industrial engineering discipline, summaries the status of personnel training. Then, based on Indoctrination teaching situation, this paper proposes a new Three-Stage case-teaching mode, that is, Ask Questions-Analyze Problems- Solve Problems. Practice shows that Three-Stage case teaching mode can stimulate student interest, improve students' active thinking and problem-solving skills.

Based on the FMEA and risk assessment analysis method, authors proposed 25 kinds of failure modes about the door system of high-speed train, conducted a risk assessment from the risk grade and criticality. Four kinds of failure modes are obtained with the highest level of risk and criticality in the door system of high-speed train. They are control failure, communication failure, compensator failure and poor function. Four key components, affecting the door system safety of high-speed train, are identified in terms of door control unit, driving device, locking mechanism and platform compensator. Research outcomes can be used in analyzing the failure causes and specific solutions to reduce and avoid the high-speed train operation risk.

The principle for the reduction of excess sludge by the ozone in the sewage treatment plants (STPs) was introduced and the change of characteristics of the ozonated sludge was analyzed in this paper. Furthermore, the effects of ozonation of activated sludge on the biotical treatment process in the STP were summarized. At last, the applications of this kind of technology in the worldwide range were enumerated and some further research directions were suggested.

The continuous dosing and discharge of water soluble redox mediators such as biologically recalcitrant compounds will result in the secondary contamination. The immobilized redox mediator prepared by incorporation of anthraquinonedisulphon-ate (AQDS) during the electropolymerization of pyrrole monomer on active carbon felt (ACF), AQDS/PPy/ACF, was used for catalyzing bioreduction of 2,4-dinitrotoluene(2,4-DNT) in this study. The results showed that the morphology of the PPy films deposits on ACF are characterized by some globular structure; AQDS/PPy/ACF exhibited good catalytic activity and stability for 2,4-DNT, the enhanced reduction rates obtained in the incubations with AQDS/PPy/ACF was about 5 times that without AQDS/PPy/ACF, the corresponding first-order reduction rate constant k reached 0.045 h-1; 2,4-DNT was reduced to be 2,4-diaminotoluene via 2-amino-4-nitrotoluene and 4-amino-2-nitrotoluene in the system.

Tool magazine and automatic tool changer is important parts to fulfill the machining center tool reserve and automatic changing of the spindle tool. The reliability of them directly affects the performance of the host. But recently there are no researches on the reliability evaluation methods, so considering this situation, the reliability evaluation researches on CNC machine tools and their main parts at home and abroad are analyzed and concluded. Combining the collected failure data of the circular tool magazine and automatic tool changer, use MTBF (Mean Time between Failures), MTTR (Mean Time To Repair) and the inherent availability index to realize the reliability evaluation of the circular tool magazine and automatic tool changer. Thus put forward a method to study the reliability evaluation of circular tool magazine and automatic tool changer.

A new method for measuring perpendicularity is developed in this paper, in which the non-diffracting beam that illuminates a pentagonal prism to produce the vertical reference is used as the straight-line reference and CCD is used as the sensor to gauge the position error to the references. Three evaluation algorithms of the perpendicularity error are also given in the paper. And furthermore, perpendicularity of a Coordinate Measuring Machine was measured by this method, which is easy to be operated. The results and analysis indicate that its working distance can be more than 15m while the precision can be less than±5μm/m.

To solve the early destruction problems occurred when overlaying asphalt pavement structure containing semi-rigid base on broken cement concrete pavement, finite element software is used to compare the stress characters between the repaving pavement and ordinary pavement, and analyze the repaving structures under different loads and different road transverse grade. It shows that the value of compressive stress at the top of base of repaving pavement is significantly higher than that of ordinary pavement, meanwhile, its value of tensile stress of base bottom is lower; the asphalt surface and new base top of repaving pavement need to bare a high value of shear stress and compressive stress under overload, so it’s prone to splitting failure in the base. With the increase of transverse grade, both the shear stress difference of road surface and maximum vertical compressive at top of the base increase in a lower position, but the situation is opposite in the higher position.

Liquefactions have been carried out on plantation fir scrap, with allylimidazolium ionic liquids as liquefaction agent. The primary component of plantation fir was analyzed, fir scrap properties were tested in contrast to peeled fir. Single-factor experiments were employed to discuss the influential factors liquefying plantation fir scrap by ionic liquids. The results showed that the appropriate conditions of liquefaction were 80°C, 30min, and the ratio of wood to liquor was 7:1, in these conditions, the liquefaction is nearly complete.

Because of the increased demand for coal resources, the use of low-quality lignite increased. Heating-Pressing Utilizing is a better method to process fine lignite particles. The water resistance of lignite briquettes is important. In this study, the Baorixile lignite was dried in a lab-scale tube reactor and on pilot line. The oxygenic functional groups of lignite were analyzed at different temperature. The result indicated that carboxyl groups and phenols decreased as the temperature increasing, and phenols plays a more important role on the waterproof of lignite briquettes, especially at high temperature.

A MDI-based waterborne polyurethane emulsion(PU) was synthesized by the reaction of polyester glycol(PBA), di-methylol propionic acid(DMPA) with 4,4`-diphenylmethane diisocyanate (MDI) instead of toluene di-isocyanatotoluene(TDI) because of its low toxicity, low saturated vapor pressure. The factors influencing the properties of waterborne polyurethane emulsion were discussed. It was observed that the appearance and properties of the PU emulsion were nearly related with the ratio of NCO/OH(R) and the amount of DMPA.

We reported the synthesis of a promising carbon nanofiber-titania-cordierite monolith composite (C/TiO2/monolith) and its application in citral hydrogenation. The composite was synthesized through two steps: TiO2 coating on the surface of the monolith with sol-gel method and the following carbon deposit by methane decomposition. C/TiO2/monolith was subsequently employed to prepare its supported palladium catalyst, Pd/C/TiO2/monolith and its catalytic performance was evaluated in selective hydrogenation of citral. Results revealed that 2.0 wt% tetrabutyl titanate sol in composite synthesis was the best in improving textural properties of C/TiO2/monolith. The optimal composite possessed a BET surface area of 39.4 m2/g and micropore area accounted for only 3.8% of its total BET surface area. It contained about 30 wt% of carbon, which was mainly composed of carbon nanofiber. Pd/C/TiO2/monolith exhibited the high citronellal selectivity (81%) at 90% citral conversion, which was attributed to the decrease of internal diffusion limitation due to its mesoporous structure.

In this paper, the application of Trusted Computing Platform is discussed. It is pointed out that the purpose of network management information system by trusted Computing platform is to set up a trusted network system. Based on the analysis of the environment of the trusted network information management system, we employ a trusted computing model in the information system of graduate student at our university. The implementation of network trusted management information system indicates that this method will improve the security of information system.

The carbon fiber-slag conductive concrete is prepared in carbon fiber and slag elementary material of function. Under the conditions of a certain amount of Carbon fiber, research has been carried out in different slag content. The electric mechanical effects of Imposing loads has been carried out. The results indicated that: slag can improve compression capacity. And the compression capacity can be reduced by adding some steel slag while adding some amount. Carbon fibre-slag concrete can be used as self-monitoring materials fracture by the electric mechanical effects