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The failure analysis of 110S tubing during acidizing process was addressed. Results showed that serious pitting corrosion occurred on the outer wall of tubing, and there was no obvious pitting on the inner wall. The maximum pitting depth on the outer wall was 1019 μm. According to the results of simulation corrosion test, needle-shaped pitting appeared on the sample surface in the test without inhibitor, the maximum depth of pitting was 158 μm; and no pitting was found on the sample surface in the test within 1.5% TG501 inhibitor; the original pitting were deepened after spent acid test, and the sample with no pitting at the beginning also showed deep pitting corrosion after 96 hours spent acid test. It was indicated that the spent acid accelerated the development of pitting significantly. The external surface corrosion of the 110S tubing was caused by the chemical reaction between the high-concentration acidifying liquid and the outer wall of the tubing. There is a gap between the tubing and coupling threaded connection, which caused the acid solution entered into the thread position, and hence the severe corrosion of the thread and pin end of the tubing happened, the joint strength was continuously reduced with corrosion development till the tripping of the coupling, and then the lower string dropped. Some suggestions were proposed for avoiding or slowing down this kind of failure based on this study.

In this paper, lattice constants, elastic properties and electronic structure of δ-Pu are investigated by means of plane wave pseudo-potential method (PWP) based on density function theory (DFT). A variety of density functional theory methods have been adopted to calculate the crystal structure and elastic property of δ-Pu, and it is found that the lattice constants, bulk modulus B, shear modulus G, Young's modulus E and Poisson's ratio ν calculated by spin polarization local density approximation (SP+LDA) method are in best agreement with experimental values. The electronic structure have been investigated within the framework of LDA+U, and the band structure, density of state (DOS) and partial density of state (PDOS) are calculated. Calculation results of elastic properties and electronic structure show that, δ-Pu shows obvious metallicity and well ductility, its electrons are strongly corrected and the DOS in the vicinity of the Fermi Level is mainly contributed by 5f electrons.

Two new anthracene derivatives were synthesized as emitter for low power triplet-triplet annihilation upconversion. Compared with anthracene, the emitter exhibits high quantum yields up to 85%. Pd (II) tetraphenylporphyrin which was selected as the sensitizer with the existence of BBA in DMF, We find a pretty high efficiency (Φuc=21.9%) of the upconversion fluorescence at 532nm with a low excitation power density of 0.5w/cm2.With the comparison of Anthracene, BBA and BTPA systems, quantum yield of the emitter is very important to the improving of the efficiency of upconversion.

A solution to improve the flexibility of simulation under the circumstance of SoS (System-of-Systems) combat has been provided in this paper. A CAS (Complex Adaptive System) based modeling method is used in this method after analyzing the military multi-layer architecture and surveying the modeling method, by joining CAS and MRM(Multi-Resolution Modeling), a military system is modeled in several resolution and some key technology are probed into and discussed in this paper. The analysis results show that method has great current significance and reference value for modeling combat system.

Currently CAD/CAM systems have become more and more common in automated manufacturing to enhance the accuracy and efficiency of machining process. On the other hand, 3D model processing technologies has long been researched in computer graphics (CG) fields. However, few algorithms were designed for the application of machining and manufacturing. In this paper, the current researches about the 3D model processing technologies in the application of freeform surface machining were introduced. These researches take the advantage of 3D model processing technology, and focus on the application of machining and manufacturing. They provide a new methodology to enhance the intelligence of the CAM, and improve the integration of CAD and CAM.

Along with the rapid development of CAD/CAM system, the smooth surfaces are widely used in industry design. Especially NURBS surface attracts rising attentions because NURBS can describe flat surface, freeform surface and so on. Currently a lot of tool path generation patterns are proposed for milling process of freeform surface. Nevertheless there are still some problems on generating efficient tool path for freeform surface under the requested surface finish roughness. In this research, in order to resolve these problems, NURBS surface is divided into some patches and the tool path is generated on each patch. This paper proposes a surface divide method and makes a comparison between this method and undivided method. As a result, it is found that dividing the surface is helpful for the making shorter tool path and increase the machining efficiency.

This paper extends the optimization model of space truss finite element method to planar steel lattice truss structures under multiple constraints involved with the strength and the stability of members as well as the mid span deflection based on sequential linear programming (SLP) and affine-scale dual algorithm with the size of members as the optimization variables and the minimum weight as the optimization objective. Algorithm implemented with programming, an example of square pyramid space grid is meant for the verification of the optimization performance that the algorithm and program extends an active control to the stability and the mid span deflection as well simultaneously during optimization. Moreover, stress and deflection constraints were enlarged and reduced, the optimization results indicate that more districted constraints bring about greater ultimate steel consumption, which extends a certification to the effectiveness of the proposal optimization model to deal with all kinds of stress and displacement constraints.

In order to study the effectiveness of new type modified asphalt additive SBP on pavement performance of asphalt mixture, the experiments were carried out to evaluate the mixing and compaction temperature, high-temperature stability and water stability of SBP modified asphalt mixture. The high-temperature stability of the SBP modified asphalt mortar was studied by DSR. The heating temperature of mineral aggregate and the asphalt mixture mixing temperature and compacted temperature were determined by three different temperature asphalt mixture SCB test, which were got SGC (Superpave Gyratory Compactor). The wheel tracking test of asphalt mixture was carried to evaluate the high-temperature stability and freeze-thaw split test were studied the water stability. Through the wheel tracking test and water stability test in harsh condition, the high-temperature stability and water stability was evaluated again. It can be concluded that SBP can improve the pavement performances of asphalt mixtures.

To study sudden expansion flow, it took N-S equation described by stream function as governing equation and got discrete equations with upwind difference and central difference. The discrete equations are applied to calculate sudden expansion flow. The results showed that when the Reynolds number is lower, stream function distribution calculated with central difference is similar to with upwind difference and that when the Reynolds number is higher, the calculation with central difference becomes unstable, even not converged. It showed that for sudden expansion flow, the upwind difference can simulate well and the results are satisfied

N-S equation is basic equation of fluid flow. Based on N-S equation, it deduced two different forms of governing equation which refer to turbulent-stream function equation and stream function equation. It analyzed their characteristics including advantages and disadvantages. The sudden expansion flow was calculated using turbulent-stream function N-S equation and stream function N-S equation separately. The results showed that both of them can have good effects.

This paper presents an improved RFID anti-collision algorithm, which is on the basis of the bit-locking backoff anti-collision algorithm. A method of sending 2 bits length collision information,is used in the recognition process.The reader determines whether the quadtree strategy is adopted according to the collision information of the “00”,“01”,“10”,“11”, effectively reducing the null operations. The proposed algorithm is analyzed carefully in account, transmission delay and throughput of the system. Simulation results show that the improved algorithm have better performance compared with the same class of anti-collision algorithm, which is more suitable for multi-tab environment.

Chinese wind power industry needs to raise the flexibility level to adapt the dynamic and complex environment. It is imperative to help the wind power industry to alleviate the influence of environmental turbulence. This paper established an analysis structure for environmental turbulence types including technological dynamic, supply and demand complexity, competitiveness confrontation and policy uncertainty. A questionnaire was designed and used to investigate the main influencing components in different types from experts in the field of wind power industry. By using the method of factors analysis, 19 main components are identified as having a significant influence on the environmental turbulence. The results revealed that the stabilization of wind power industry requires a combined effort from the enterprises and government.

Network intrusion is shown in more and more concealment, and some intrusion data is potential with inclination property. This paper is aimed to mine the potential inclined intrusion data effectively, and ensure the security of large network. On the basis of the traditional fractional Fourier transform data mining method. An improved potential inclined intrusion accurate data mining algorithm is proposed. New algorithm can separate the time and frequency coupling effectively. The discrete fractional Fourier transform is implemented for the network intrusion data firstly. The data is gathered in the fractional Fourier domain, the inclined intrusion data accumulation is increased. The network signal interference is suppressed effectively. Simulation results show that the proposed data mining algorithm can extract the potential inclined intrusion data in strong concealment. The mining performance is much better than the traditional algorithm, and it can be applied in the network security defense area perfectly.

This paper presents two nose cones models and their numerical calculation of aerodynamic noise in high speed airflow field combining the analysis theory of fluid dynamics with the acoustic boundary element analysis method. The noise sound pressure levels (SPL) of these two models are calculated under the different speed airflow. And we compare the SPL of the better model with that of commercial nose cone models. These simulated results show that the aerodynamic noise of the nose cone with a ellipsoid head has lower flow-induced noise than that of commercial nose cone models at relative high air flow velocities at most frequencies.

Fourteen concrete columns with various sizes confined by BFRP and hybrid FRP and six plain concrete columns as the control specimens were axially loaded to failure in order to investigate both confining effects and size effects in concrete columns confined by BFRP and hybrid FRP. Experimental results show that BFRP and hybrid FRP can increase considerably both the capacity and ductility of the concrete specimens. Furthermore, the peak stress of the unconfined concrete decreases with the size of the specimens increasing. Similarly, the peak stress of BFRP confined concrete decreases with the size of the specimens increasing when the lateral confining stresses are the same. Hence, both confining effect and size effects should be considered carefully in the stress-strain model of concrete confined by BFRP. In addition, both strength and ductility of concrete confined by hybrid FRP in case of CFRP as inner layers and BFRP as outward layers are better than those in case of BFRP as inner layers and CFRP as outward layers.

In channel estimation, the complexity of the DFT-based channel estimation algorithm is lower than the MMSE algorithm, and the DFT-based algorithm performs better than the LS algorithm. However, due to that the traditional algorithms simply considered all the samples to be useful channel impulse response, ignoried the effect of noise. Therefore, the algorithm could be improved. This paper presents an improved algorithm based on twice noise estimation theory. The algorithm uses the sequence of points other than the cyclic prefix length to estimate the noise variance firstly, and then use the estimated noise variance to distinguish the noise samples within the cyclic prefix length. The computation of the new noise variance and noise mean through the new noise points as a threshold filters the impulse response of the channel in time domain and eliminates the impact of noise on the system further. The simulation result shows that the improved algorithm performs better than the traditional algorithm.

With the rapid development of high-rise frame-tube office buidings in domestic large and medium-sized cities, it brings the problem about the study of quantities. Traditional structural design can meet the requirements of all kinds of standards, but it wastes materials, which is now taken seriously. Structural optimization design can save materials. This paper carries structural optimization design on eight high-rise frame-tube structures, and proposes a predictive method for concrete and steel-bar dosage of high-rise frame-tube structures after analysis. The predictive method makes it possible to predict the dosage before the structural design without the tedious budget process. The predictive value is economical and reasonable, and it can provide reference for structural design and construction in the future.

Permeability coefficient is the determining factor for physical quantities in the seepage field, which can affect the distribution of all physical quantities including seepage flow. It took a hydropower station tail race as an object, founded FEM numerical model, analyzed the influence of permeability coefficients of cut-off wall and bedrock in non-uniform seepage and got the key factors affecting seepage flow. It provides the references in theory for design and construction of the tailrace.

t was discovered that sunlight/Fe2+/S2O82- method is superior to UV/Fe2+/S2O82-method when we treated water samples of acidic Congo red .Congo red dye was applied in activated potassium persulfate by sunlight/ultraviolet and ferrous ion system investigation. It showed efficient sunlight/ultraviolet activated degradation of acidic Congo red, and the activation of sunlight was better than that of ultraviolet. The effect of pH value, Fe2+ and S2O82- concentration on the degradation of Congo red were investigated. The result indicated that when pH was 3.0, [Fe2+] was 0.42mmol/L, [S2O82-] was 74.0mmol/L, the decolouring ratio of acidic Congo red were 91.0% and 100% respectively after 5min and 60min of reaction times, the TOC removal ratio was 80.4% after 120min.

The elementary unit of the optimization system for steel structure is optimization group. The optimization system takes advantage of the inheritance and polymorphism of VC++ to optimize the members with different amounts of variables or using different codes concurrently. The structure of the introduced system has good adaptive capacity of increasing optimized sections, as well as adding or updating codes. The constraints setting of the system can be adjusted according to the steel structure codes of different regions, which are mainly based on prevailing Chinese codes at the current phase. The system uses an advanced complex method which makes the result of optimization easier to be used in practical engineering since being available for discrete variables.

This paper proposes a remote monitoring system that consists of three clients and servers. A web server is adopted to supply a remote visiting interface for browsers from Internet. A video server is installed to capture the live streaming video, and broadcast it to video clients that are embedded in browsers. More ever, a TCP DAQ (Data Acquisition) server is designed to acquire data from sensors, and then transmit them to VI (Virtual Instrument) clients that are also embedded in browsers. To support VI clients that are designed by different languages, such as C++, Flex or HTML5, multiple protocols are integrated in the TCP DAQ server. Through identifying the type of virtual instrument client that is connected to it, the TCP DAQ server can select a protocol automatically.

Poly (ethylene terephthalate) (PET)/SiO2/TiO2 hybrid composites were synthesized via the sol-gel method in the presence of tetraethylorthosilicate (TEOS) and tetrabutyltitanate (TBT). The formation of Si-O-Ti bonds in the resulting products was confirmed by Fourier transform infrared spectroscopy (FTIR) analysis. The Photo-degradation properties of hybrid composites were investigated under the ultraviolet radiation. And the change of the intrinsic viscosity for the hybrid composites was measured using an Ubbelohde viscometer after the photo-degradation.

Characteristic parameters of piezoelectric ceramic have immeasurable effects on its performance. On the basis of the equivalent circuit of piezoelectric ceramic, dynamic resonance method is used to measure a series of cylindrical piezoelectric coefficients. Based on labview virtual instrument technology, an automatic measurement system with Agilent E4980A impedance analyzer is developed. The characteristics of impedance frequency response are recorded and the admittance circle is drawn. Then the major parameters including d33 are measured automatically and the reports are generated. Finally, E-S(Electric-Strain) method is adopted to verify the reliability of the measurement results. The results showed that the dynamic resonance method had good repeatability with the standard deviation no more than 1.66%, and the test values were in accord with the E-S method.

Europium (III), acrylic acid and 1,10-phenanthroline three ternary complexes was synthesized with acrylic acid (AA) as the first ligand and 1,10-phenanthroline as the second ligand. Tri-cellulose acetate (TCA)/Eu (AA)3Phen hybrid material was prepared by the method of solution blend, dimethyl sulfoxide (DMSO) as the mutual solvent. The Fourier transform infrared spectroscopy (FT-IR) results confirmed the molecular structure of the Eu (AA)3Phen complex and the formation of the doping TCA/Eu (AA)3Phen hybrid material.

FGD gypsum-fly ash plaster material was prepared by desulfurization gypsum plaster and fly ash as main materials, compound retarder A (composed of citric acid, sodium metaphosphate and borax), methylcellulose (MC) as super absorbent polymers (SAP) and water reducing agent of lignosulfonate. Mix proportion was determined through studying effects of the experimental factors, including fly ash mixing amount, retarders of citric acid, bone glue and compound retarder A, and SAP of MC and dextrin, on plaster material properties. Final mix proportion was followed as: FGD gypsum to fly ash mass ratio of 4.0, compound retarder of 0.2%, methylcellulose of 0.2% and lignosulfonate of 0.1%.

Poly (ethylene terephthalate) (PET)/SiO2/TiO2 hybrid composites were prepared via the Sol-gel method that involves two steps: the as-prepared PET was dissolved into the mixed solution of phenol and dichloroethane by adjusting the pH value of the reaction system to 2～3 using acetic acid; then both the tetraethylorthosilicate (TEOS) and the tetrabutyltitanate (TBT) were successively added to the hybrid solution followed by the Sol-Gel reactions at strong stirring to form the three PET/SiO2/TiO2 composites with cohydrolysis-condensation reaction. The intrinsic viscosity of the hybrid composites were measured by using an Ubbelohde viscometer. The resulting products with the different SiO2-TiO2 content were thoroughly characterized with FT-IR.

The ethylene-propylene polymer (PP) was modified by using a rare earth β-nucleating agent (WBG-II). The crystallization characteristics of PP induced by WBG-II were investigated through the wide-angle X-ray diffraction (WAXD). The effect of β-nucleating agent on the mechanical property of PP under low temperature was also researched. The results confirmed that β-nucleating agent WBG-II can change the crystal structure of PP and induce the β-form crystals in the PP to develop. Moreover, under the room temperature, with the increment of WBG-II, the tensile strength, bending strength and modulus of the modified PP increase, but the impact strength and elongation at break decrease; and especially at-10 °C, this tendency is more obvious.

Vitrified micro bubbles thermal insulation material was made of vitrified micro bubbles, cement, fly ash, gypsum and sodium silicate, by molding process. VAE emulsion and stearic acid-polyvinyl alcohol emulsion were added to improve water resistance of the material. Mixed with 10% VAE emulsion and 5% stearic acid-polyvinyl alcohol emulsion, properties of the material are followed as: flexural strength 0.64MPa, compressive strength 1.35MPa, softening coefficient 0.71 and 2h volumetric water absorption 6.9%.

Low-alkalinity steel slag was mixed with FGD gypsum to make the gypsum based cementing material of low-alkalinity steel slag, by adding some appropriate activators. Mechanism of each component was discussed. Results show that, when steel slag-to-FGD gypsum is 1, the initial setting time is greatly shortened to 6min and the final to 9min. Flexural strengths of 2h, 1d and 7d are followed with 2.21MPa, 2.03MPa and 3.59MPa, while the compressive of 2h, 1d and 7d are 5.06MPa, 4.70MPa and 12.55MPa.

poly[(2-methoxy,5-octoxy)1,4- phenylenevinylene-carbon nanotube composites (MOPPV-CNTs) were synthetized by In-situ polymerization in the paper. The molecular structure and surface morphology of the nanocomposites were characterized by the TEM. The TEM results showed that the MOPPV coated on the CNTs forming Core-shell nanowires structure composite. The wavelength of UV-absorption spectra of the composites exhibited a blue shift caused by the functionalized MWCNTs. the energy gap of the composites were increased. The band structures of the composite were determined by using cyclic voltammetry, the result shown that the HOMO energy and the LUMO energy increased with the concentration of CNTS. The increase of LUMO energy would benefit for balance of the carries injection when the composites used in the optoelectronic devices.

A new cellulose graft copolymer was synthesized by the lipase-catalyzed ring-opening polymerization of ρ-dioxanone (PDO) onto cellulose in 1-N-butyl-3-methylimidazolium chloride ([Bmim]Cl). The structure of the copolymer was characterized by FT-IR and 1H-NMR. The obtained copolymers exhibited the different thermal stability by TGA after the graft copolymerization. The reaction media applied can be easily recycled and reused.

FGD gypsum, fly ash and wheat straw are taken as main raw materials; waterproof agent, water reducer, activator and composite retarder are chosen as admixtures, and wheat straw reinforced desulfurization gypsum block is produced through reasonable processing technology. Block ratios of material, processing technology and performance are analyzed.

A new biodegradable copolymer of cellulose diacetate and poly(p-dioxanone) (PPDO) was prepared through a couple-grafting procedure. PPDO was functionalized with the isocyanate group, and then PPDO terminated with the isocyanate group was enabled to react with the hydroxyl groups of cellulose diacetate. The length of PPDO graft chains can be controlled easily by using the prepolymers of PPDO with different molecular weights. The resulting products were thoroughly characterized with FT-IR,1H-NMR. The mechanical properties of the copolymers were affected greatly by the length of PPDO segment.

A new amphiphilic copolymer of hydroxyethyl cellulose and poly(p-dioxanone) (PPDO) was prepared through the ring-opening copolymerization in IL 1-N-butyl-3-methylimidazolium chloride ([Bmim]Cl). The resulting products were thoroughly characterized with FT-IR,1H-NMR and TG. The copolymer is hopeful for the use as tissue engineering materials and the ionic liquid as the reaction media can be easily recycled and reused

This research proposes a method of production scheduling using autonomous distributed systems. A concrete message protocol is proposed to realize the production scheduling which includes not only Machine but also Human and AGV scheduling. Moreover this method realizes real time scheduling and parallel scheduling. Therefore, a new structure of production scheduling is proposed, which can realize a change of the type of production scheduler to correspond with a type of production system.

Sixteen bacterial strains were used to analyze the specificity and sensitivity of the commonly used oligonucleotide probe for FISH. The results showed that GAM42a probe was not only hybridized with γ-subclass proteobacteria strains, but also hybridized with other subclass proteobacteria strains. The specificity of GAM42a probe therefore would be improved. On the other hand, the average value of detection rates of ALF1b, HGCGP and LGCGP354B probe was less than 50%. After 10min lysozyme treatment, only the detection rate of LGCGP354B probe was improved.

A new permeable reactive composite electrode (PRCE) attached with a permeable reactive layer (PRL) of Fe0 and zeolite has been developed for soil pH control and the improved removal efficiency of heavy metal ions (Cd, Ni, Pb, Cu) from soil in electrokinetic remediation process. The effects of different composite electrodes on pH control and heavy metal removal efficiency were studied, and changes in the forms of heavy metals moved onto the electrodes were analyzed. The results showed that with acidic/alkaline zeolite added and renewed in time, the composite electrodes could effectively neutralize and capture H+ and OH- produced from electrolysis of the anolyte and catholyte, avoiding or delaying the formation of acidic/alkaline front in tested soil, preventing premature precipitation of heavy metal ions and over-acidification of soil, and thus significantly improved the heavy metal removal efficiency. Fe0 in composite electrodes could deoxidize and stabilize the heavy metal ions. After that capture and immobilization of the pollutants were achieved. The results also showed that, using "Fe0 + zeolite" PRCE in the cathode with timely renewal, after 15-day remediation with a DC voltage of 1.5 V/cm, the total removal rates of Cd, Pb, Cu and Ni were 49.4%, 47.1%, 36.7% and 39.2%, respectively.

Along with agriculture development, a variety of peoblems have risen which effect agriculture industry cluster development badly. How to use the new development model to solve these problems is a subject worthy of study. The Scientific Outlook on Development is an ideological weapon to guide agricultural industry cluster. So this paper proposes the ecological, harmonious and recycling strategic thoughts of agricultural industry cluster sustainable development based on the perspective of the Scientific Outlook on Development.

In order to study welding performances of duplex stainless steel, gas tungsten arc welding (GTAW) was adopted to butt-weld the S31803 tube whose wall thickness is 18.26mm. Metallographic structures of the weld, base metal and heat affected zone (HAZ) were also analyzed. Crevice corrosion resistance of the GTAW joint in 6%FeC13 + 0.05mol/L HCl solution in different temperatures had been tested according to ASTM G48. The results showed that with rising of temperature the average rate of crevice corrosion increased but the growth of corrosion rate slowed when the temperature reached a certain degree. There was corrosion groove in submarginal area of the crevice and the area near HAZ of the groove was much deeper. The results provided a reference to welding technology of S31803 DSS and also provided experiment resources for research on welding of the DSS.

The new wall insulation materials of vitrified micro bubbles were made of vitrified micro bubbles, expanded perlite and decent additives by adding sodium silicate and cement as the bonders, and were manufactured through mould pressing process. In this paper, the process parameters of the production were made sure through orthogonal experiments, such as the ratio of raw materials and forming process, the performance of product was studied, and the mechanism of product was discussed.

With the rapid development of high-rise shear-wall structure residence buildings in domestic large and medium-sized cities, it brings the problem that traditional structural design wastes materials, which is now taken seriously. Structural optimization design can save materials more than 10% in general. This paper carries structural optimization design on eight shear-wall structure residence buildings, and proposes a predictive method for concrete dosage of high-rise shear-wall structure residence buildings after analysis. The predictive method makes it easier to obtain the concrete dosage, because it frees from the cumbersome process of engineering budget. The predictive value is economical and reasonable, and it can be used to guide structural design.

A magnetic bearing exciter is attached to the rotor-bearing system, to exert an asynchronously rotating force on the rotor to excite the first forward mode. And the half-power point method is developed on the basis of displacement response function, where displacement response data is needed only to identify the frequency and damping. The simulation results show that the method can effectively identify the damping with speed and white noise interference. The experiment results show that the damping radio decreases with increasing rotational speed. It has a good engineering application prospects.

The development of bulletproof materials indicates the military and scientific strength of a country in the fields of modern national defenses and military affairs. With the advancement and development of scientific technologies in the world of human being, the bulletproof materials experienced the changes from the ordinary natural plants or simple metal substances to the synthetic composite materials with high intensity. In this work, we emphasized the applications of some advanced composite materials and their study in bulletproof fields.

This paper focus on rotor-bearing system parameter identification with impulse excitation in horizon and vertical which is based on Backward -auto-regressive model. Singular value decomposition is applied to reduce the noise and the proper AR model order and de-noising threshold are selected. In this paper, the damping ratio is identified within the different rotating speed and different impulse excitation, and the error is calculated within the different noise level and different AR model order when compared with the ideal model. Though the theoretical analysis, simulation analysis and experimental research, We can indicate that the BAR model has a good performance in system identification and elimination of false modal.

Condition Monitoring Agent (referred to as CMA) inherits and develops the concept of "concentrator" and "monitoring station", and play a connective role in the condition monitoring field of power transmission and transformation system. This paper describes the various concepts associated with the CMA and the CMA's design principles, general requirements and functional design.

The “Whole Process” experimental model of experimental teaching was proposed in this paper to solve the problems in experiment curriculum of civil engineering. This experiment educational model has several advantages, such as closely related to the experiment content, the experimental instructors can work cooperatively, and the high efficiency of equipment use.

The acute toxic effects of mercury (Hg) and bromoxynil (BX) on Enchytraediae Fridericia bulbosa in OECD soil were investigated. The results suggested there was statistically significant differences (p

Staircase units have both active and hazard impacts on whole structure under earthquake. The existence of these impacts should not be neglected during designing process. Three sets of nonlinear finite element (FE) models of different types are finely built with and without staircase units, upon which dynamic earthquake analysis and pushover analysis are carried out to simulate the real earthquake disaster. Comparisons of overall properties, pushover performances, seismic response and internal force of elements are summarized and discussed between two models of a set. Potential dangerous elements are found while the reasons are generalized. Suggestions upon designing process are given as well.

Under the grid integrated control management mode, operation and maintenance station location has been the key to ensure the stable operation of the grid system. Based on grid line cost minimization of operation and maintenance station and a k-means algorithm, an operation and maintenance station location model is established. Through the practical example, the model makes operation and maintenance station location rational and scientific under considering the operation and maintenance line materials cost between substations. The electricity materials play important roles in the study and some study will be put on it.