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In order to ensure the efficient separation of solid particles in heavy oil sewage by air flotation technology, in this paper, the flotation performance and mechanism of coagulated particles are studied in terms of contact angle, light transmittance and Zeta potential by changing pH, inorganic flocculants, organic flocculants and reagent dosage in the process of flotation. The results show that stage of air flotation could be benefited by increasing light transmittance, zeta potential of sewage, and contact angle of coagulated particles during the coagulation stage. When pH of sewage is 6.5, dosage of PAC and anionic PAM (molecular weight: 10 million) is 150 mg/L and 0.5 mg/L, respectively, an optimum coagulation effect as well as the treatment effect could be achieved.

In this paper, the Mg-Al hydrotalcite-like compound (Mg-Al-HTLC) was synthesized by hydrothermal method at 373K. Structure and morphology of Mg-Al-HTLC was obtained with X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transform infra-red spectroscopy(FTIR). A series of polar and non-polar molecules were used for probes, surface properties of Mg-Al-HTLC was studied by inverse gas chromatography (IGC) at 353K, 363K, 373K, 383K respectively. The retention volume was utilized for evaluating the free energy of adsorption (-ΔGSP), the dispersive component of the surface energy(γsD), as well as the enthalpy and entropic component(ΔHSP, -ΔSSP). XRD results reveal that the Mg-Al-HTLC has high crystallinity and perfect layered structure. The results of IGC show that Mg-Al-HTLC would adsorb straight-chain alkanes spontaneously, and the values of γsDwere similar at all temperature. It reveals Mg-Al-HTLC is a material with particular characteristics of both acid and base. This study illustrates that, as a method to evaluate the surface properties of material , IGC method is dependable and significant.

Liquid-solid extrusion following vacuum pressure infiltration technique (LSEVI), which integrates melting, pouring, infiltration, and liquid-solid forming under high infiltration pressure, is a promising technique for the fabrication of metal matrix composite. LSEVI technology combines the advantages of both squeeze casting and gas pressure infiltration method. In this study, 2D carbon fiber reinforced AZ91D matrix composites (2D-Cf/Mg composites) were fabricated by LSEVI. Pyrolytic carbon (PyC) coating was deposited on surface of T700 carbon fiber by chemically vapour deposited (CVD) before fabrication. SEM observation indicated that the composites were well fabricated by LSEVI. The ultimate tensile strength of 2D-Cf/Mg composites fabricated by LSEVI was 390-410 MPa. Two kinds of failure behavior were found during tensile test: abrupt failure and progressive failure. The abrupt failure was characterized by a complete failure after the ultimate tensile strength (UTS) was reached. The progressive failure was a unique failure behavior with gradual damage after the UTS. In the case of progressive failure, the remaining strength after the UTS was 79% of the UTS. There was a remaining strength of 200 MPa under the strain of 0.1. Fracture surface morphology indicated that the remaining strength was attributed to the gradual breakage of the fiber bundles.

We investigated supply water temperature of the district boiler between 2006 and 2014.And calculated the design life cycles of heating pipeline based on the district boiler as the heat source. Then superposed the number of the design life cycles caused by pipelines accidents and district boiler of the main trunk lines, distribution lines and subscriber connection line, we obtained the design life cycles of different heating pipes. This result can provide a basis for fatigue damage analysis of heating pipe fittings.

Based on existing analog to digital converters (ADC), this study proposes a simple and reliable controlled phase shift (CPS) method to improve the sampling resolution of a periodic signal. The proposed method uses phase shifted sampling sets of a sequence of sampled periods to increase sample resolution. When combining these sets, the period is virtually sampled with a higher number of samples. The lower sampling rate (per period) alleviates the requirements to be imposed on the conversion time of the ADC. Under the original conversion time of ADC, the proposed method can provide more sampled signals. Experimental result shows the proposed CPS method can improve the sampling resolution of periodic signals.

The shape of hybrid monohull at the bow is quite complex and the viscosity force is the main component of the damping force in the drainage area of the bow when the ship moves in waves so that the result of the motion predicition by the traditional potential flow method is very different from the result of experiments. This paper tries to use new numerical compute method considering the effect of the viscosity to improve the precision of the sea keeping predicition. Based on the Reynolds Averaged N-S Equations (RANS) method, the paper takes a hrbrid monohull to compute the hydrodynamic coefficients. According to the result of model test, the prediction of the hybrid monohull’s the longitudinal motion in regular waves at speed of 18kn also indicates that RANS method can reflect viscid influence reducing the motion of hybrid monohull in waves.

Considering the essential influencing factors for the mechanical properties of the engineered cementitious composite (ECC), the polyvinyl alcohol (PVA) fiber was used and a batch of cube specimens and thin plate specimens of PVA-ECC were manufactured based on the variation of water cement ratio, amount of fly ash and amount of water reducer. The compressive strength test for the PVA-ECC cube specimens and the flexural strength test for the PVA-ECC thin plate specimens were conducted. A practical decision-making frame based on the Analytic Hierarchy Process (AHP) method was proposed to solve the problem of the optimal mix proportion of PVA-ECC, which can take into account the compressive strength, the flexural strength and the corresponding deformation capacity together.

TiO2 was added in Zn-Bi based varistors to enhance the grain growth of ceramics and the effects of TiO2 addition on the microstructure, I-V, flow and aging characteristics of Zn-Bi varistors were studied. The voltage-gradient of samples decreased to minimum value of 30.6 V/mm when the TiO2 content was 0.6 mol%, but increased with further increasing TiO2 content. The variation trend of average grain size was just the opposite of the voltage-gradient. 0.6 mol% TiO2 added samples have a more unify microstructure and excellent three parameter values with IL=5.7μA, E1mA=30.6V/mm, α=25.8. After Dc aging at 125 oC for 7h, the voltage variation of samples is very slow (~-4.1%).

In this passage is about the safety evaluation on the conveyance structure of small hydroelectric power station. Applying Binary comparative indicators to determine the weights and fuzzy recognition model on the conveyance structure of small hydroelectric power station’s assessment. Compared other models with fuzzy recognition model which will be explained in detail in the next section on a specific small hydropower station. The results show that the fuzzy recognition model is feasible and effective on safety evaluation on the conveyance structure of the hydroelectric power station.

This article analyses the connotations of water resources carrying capacity and its evaluation method, Selecting 9 main factors as the evaluation indexes, combined with fuzzy pattern recognition model and apply this model to comprehensive evaluation of water resources in Erdos. The results show that current exploitation and utilization of water resources in this region has reached a considerable size, under the current economic and technical conditions, the bearing capacity of water resources in this region has been relatively small, water resources supply-demand contradiction is so urgent.

With the city urbanization and increase in the number of motor vehicle, Study of the city traffic pattern from taxi GPS data has become the research hotspot. This paper analyzes two city taxi GPS data; calculate the peak of get-on/off amount, the time span distribution of time dimension. Radius of gyration of spatial dimension. Then analyze the traffic characteristics through these temporal characteristic parameters.

The feasibility and reliability of the retrieval of true temperature and spectral emissivity based on continue measurement data iteration algorithm is explored for multi-wavelength pyrometer. The proposed algorithm is derived theoretically, which can obtain the true temperature by iterative process of searching a team of spectral emissivity correctly. Simulation and experimental results indicate that a fairly reasonable representation of true temperature and spectral emissivity distribution can be obtained using the continue measurement data iteration method. The method has advantages of simplicity, rapidity, and suitability for on-line true temperature measurement by pyrometer.

The catalytic hydrogenation kinetics of N-ethylcarbazole over 5 wt% Ru/Al2O3 was investigated at various temperatures. The results shows that the hydrogenation reaction was exothermic and high temperature is unfavorable for the reaction rate. Fully hydrogenation was achieved within 1 hour under the best reaction temperature of 170 °C. The kinetics of N-ethylcarbazole follows the first-order kinetics in terms of the reactant concentration but independent of hydrogen pressure, which was maintained as a constant in the reaction process. The apparent activation energy of N-ethylcarbazole hydrogenation reaction at 150-180 °C was found to be 71.2 kJ/mol.

At present domestic GIS training mode and curriculum system differences, mostly dependent on the original maternal professional (such as mapping, geography, and computer), the training mode and market demand for GIS staff have difference. In the aspect of training GIS talents, there still exist many problems, but the most concern is the selection of computer and mapping class curriculum system. Open GIS universities are limited by their limited resources, in the curriculum system, is not completely according to the professional direction, talent needs reasonable selection of computer and mapping class curriculum, but according to the existing teaching resources (existing professional and research directions such as experimental facilities, teachers and the current staffing and so on) to the curriculum configuration this often leads to the final result, to set the course according to the teachers' training mode; this will cause the extremely serious consequence, free to piece together the course system is not possible to develop Beibu Bay area market demand for talents. The basis and origin of the mapping and computer class talked about, to explore the training mode is suitable for the characteristic of Beibu Bay area GIS talents, curriculum system construction to improve GIS adaptation training mode, strive for reasonable selection of Surveying and mapping and computer courses.

Protein-protein interaction (PPI) networks provide a simplified overview of the web of interactions that take place inside a cell. According to the centrality-lethality rule, hub proteins (proteins with high degree) tend to be essential in the PPI network. Moreover, there are also many low degree proteins in the PPI network, but they have different lethality. Some of them are essential proteins (essential-nonhub proteins), and the others are not (nonessential-nonhub proteins). In order to explain why nonessential-nonhub proteins don’t have essentiality, we propose a new measure n-iep (the number of essential neighbors) and compare nonessential-nonhub proteins with essential-nonhub proteins from topological, evolutionary and functional view. The comparison results show that there are statistical differences between nonessential-nonhub proteins and essential-nonhub proteins in centrality measures, clustering coefficient, evolutionary rate and the number of essential neighbors. These are reasons why nonessential-nonhub proteins don’t have lethality.

Orthogonal testing method was used to study the effects of polystyrene particles, hydrophobic agent, air-entraining agent, polypropylene monofilament fiber on dry density, compressive strength, water absorption and softening coefficient of composite insulation mortar. The optimal ratio was obtained as: 3% of the weight are polystyrene particles, 0.2% is hydrophobic agent, air-entraining agent counts for 0.4wt%，and polypropylene monofilament fiber 0.6%. The main performances of the mortar were recorded as: dry density was 228Kg/m3, 28 day compressive strength after conserved for 28 days was 0.54MPa, and thermal conductivity 0.0596W/(m•K). Microstructure of the composite insulation mortar was analyzed by SEM (scanning electron microscopy) and its function mechanism was studied preliminarily.

Orthogonal testing method was used to study the effects of fly ash, aggregate, weight ratio of water and material, way of incorporation of hydrophobic agent, on dry density, compressive strength, water absorption and softening coefficient of composite insulation mortar. The optimal ratio was obtained as 15% of the total weight is fly ash, 40% of the weight are aggregate, weight ratio of water and material are 1.1, 0.2% is hydrophobic agent (hydrophobic agent was added in the mixture). The main performances of the mortar were recorded as dry density was 220Kg/m3, compressive strength after 28 days was 0.50MPa, and thermal conductivity 0.0593W/(m•K). Microstructure of the composite insulation mortar was analyzed by SEM (scanning electron microscopy) and its function mechanism was studied preliminarily.

In this paper we use the SVG technology to the field of Web GIS and set up the Traffic Accident Scene Management System (TASMS). Using text format characteristics of SVG, combined with ASP.NET technology and the scripting language JavaScript, we achieved dynamically load geographic information image, quick query and some user interaction functions.

We reported a systematic study of the effect of Zr content on the structural and magnetic properties of rapidly quenched Sm (CobalFe0.11Cu0.10Zrx)7 alloys with x varying from 0 to 0.04. The results show that the addition of Zr greatly affected the microstructure and magnetic properties of the heat-treated ribbons. The Zr-free ribbon had crystallized as the 1:7H structure as the main phase while the ribbon with Zr addition adopted the 2:17R structure type. A Sm2Co7 phase was observed in the heat-treated ribbons when the Zr content x increased to 0.04. It is found that while the Zr content was increased from 0 to 0.04, saturation magnetization of the heat-treated ribbons was decreased from 11.9kGs to 3.3 kGs, and the intrinsic coercivity was increased from 0.07 kOe to 11.7 kOe. The highest intrinsic coercivity, Hci=11.7 kOe, was obtained in the ribbon with Zr content of 0.03.

The influences of Pacific sea-surface temperature (SST) change on the dust storm in Northern China are discussed by using the the singular value decomposition (SVD) method and the integrated numerical simulation and forecast system of dust weather in this paper. The statistical analysis show that the frequency of dust storms in the most of Northern China are increased during the La Niña, while decreased during the El Niño. The results of the control experiment by using the integrated numerical simulation and forecast system of dust weather are similar to the SVD analysis results.

The molecular ecology analysis of microorganisms is important for the development of microbial enhanced oil recovery. The bacterial 16S rRNA gene clone library was constructed to detect the community diversity in injection-water and produced-water in Luliang Oil field in Xinjiang in this study. The phylogenetic analysis indecated that most of clones (76%) in injection-water were clustered in α-proteobacteria. Roseovarius sp. and Novispirillum sp. were the main bacteria accounting for 41.3% of the total of clones. And the most clones in production water were clustered in α,γ-proteobacteria with the phylotypes belonging to α-proteobacteria accounting for 61% of the clone library. Sphingomonas sp. and Pseudomonas stutzeri sp. were the dominant bacteria which constitute 26% and 22%. The variaty of functional bacteria is more in produced-water than injection-water.

In hot rolling process of 2205 duplex stainless steel, it was found that bright line defects are mainly located at where is about distance of 200 mm from two sides of hot rolled plate. The forming reason of bright line defects is studied by means of metallographic microscope, scanning electron microscope (SEM) combined with energy dispersive spectrometer (EDS). It is concluded that the formation of bright line defects has associated with sticking and that the temperature reduction on the edge of hot rolling plate causes a high percentage of austenite phase which is network structure. In order to prevent or avoid the happening of the sticking phenomenon, it is necessary to uniformly distribute the oxide on the strip surface by controlled rolling process.

Neural probe array is utilized in neural recording, in the aim to understand the neural activity. Silicon is the common substrate used in neural probe array. However, due to the rigid nature, the silicon-based neural probe array causes cell damage during implantation into the brain tissue. This would reduce the signal-to-noise ratio. Therefore, flexible polymer probe is more suitable as it can help to minimize the tissue damage and thus increasing the signal-to-noise ratio. The lack of stiffness for the flexible probe is solved by coating it with polyethylene glycol (PEG). It stiffens the probe and can be dissolved in water, which allows the polymer probe to regain its flexibility. The proposed integrated probe with reduced distance between probe and ASIC will further help to improve the signal-to-noise ratio during neural recording. The coated flexible probe regained original impedance of 14.1 kΩ at a frequency of 1 kHz. A bench-top neural recording with the flexible probe array in saline solution will also be acquired.

This work presents a silicon-based multichannel probe integrated with a front end low power neural recording integrated circuit (IC) which is used in acute neural recording application. The low power neural recording IC contains 100-channel analog recording front-ends, 10 multiplexing successive approximation register ADCs, digital control modules and power management circuits. The 100-channel neural recording IC consumes 1.16-mW, making it the optimum solution for multi-channel neural recording systems. The neural recording IC and Si probe are integrated in a printed circuit board (PCB) which is fixed on the skull using dental resin. Digital neural signal is converted to analog signal and output by neural recording IC. The signal-to-noise ratio of neural recording signal can be increased through the reduction of interconnect length. The buckling strength of the fabricated probes was simulated using finite element analysis and measured by compression tester. The packaging method of 2D probe and neural recording IC was successfully demonstrated. The impedance of the assembled probe is also measured and discussed. To verify the functionality of Si probe integrated with neural recording IC, a pseudo neural signal acquisitions have been perform.

A calculation method of rotational stiffness of all-vertical-pile-supported (AVPS) wharf is discussed and a formula based on rotational stiffness is derived to evaluate the distribution of horizontal forces on an AVPS wharf. Combining with an engineering example, the rotational stiffness and the horizontal force distribution coefficients were calculated utilizing finite element method (FEM), the elastic support-rigid beam method (ESRBM) outlined in Chinese Harbor Code, as well as the proposed formula for the piles layout width-length ratio of 0.4, 0.5 and 0.6. Results indicate that the increase in width-length ratio will increase the rotational stiffness and make the distribution of horizontal forces on each bent to be more uniform. Results calculated by the proposed formula are agree well with the results by FEM. The maximum difference of the distribution coefficient on the first bent between the results obtained by the proposed formula and by ESRBM is approximately 22%.

The Ag/AgI/Bi2WO6photocatalysts were successfully synthesized by deposition-precipitation and photoreduction methods. The catalyst showed high and stable photocatalytic activity for the degradation of the RhB under visible light irradiation (λ>400 nm). On the basis of a new plasmonic photocatalytic mechanism, the photogenerated electron-hole pairs are formed in Ag nanoparticles (NPs) due to surface plasmon resonance under visible-light irradiation. Then, the photoexcited electrons at the Ag NPs are injected into AgI. On the other hand, the band position shows that AgI and Bi2WO6have the matching band potentials in the AgI/Bi2WO6heterostructure composites. So the photoexcited electrons is ultimately transfer to the Bi2WO6conduction band (CB), photo-induced holes (hVB+) is transfer to the AgI valence band (VB) and the simultaneous transfer to compensative electrons from I-to the Ag NPS. This the result indicates that the high photosensitivity of noble metal Ag NPs due to surface plasmon resonance, which is not only improve the photocatalytic performance, but also offer a new idea for preparation of new photocatalysts .

The removal of phenol from aqueous solution was evaluated by using microwave technique assisted with active carbon. The effective factors such as the concentration of phenol , active carbon dosage, microwave power and irradiation time on the removal rate were investigated. When the concentration of phenol was 150 mg/l, active carbon dosage was 6 g/l, microwave power was 500 W, and irradiation time was 8 min, the removal ratio of phenol reached 95. 03%. The research on kinetics suggested that the process of treatment accords to the first-order reaction.

State estimation of power system is the basis of all the high level application and analysis for dispatch centers. Against the bad convergence of the WLAV (weighted least absolute value)-based state estimation method, a new robust state estimation method based on exponential weight function (E-LAV) is presented in the paper. This method uses an exponential weight function to replace discontinues weight function of WLAV to improve the poor convergence. The results of the sample system of 4-node system and the IEEE 118-node system show that the E-LAV-based state estimation method not only owns the similar convergence as WLS-based method, and also owns a strong robustness. Through modifying the weight matrix of the least squares, the proposed new method has good prospects for application in practical engineering.

Electrical capacitance tomography (ECT) is a developing technique for visualization of the dielectric permittivity distribution inside the pipe. Internal electrode or internal structure is frequently encountered issue. In this paper, an analytical method for the circular ECT sensor with internal electrode is proposed to calculate the potential distributions and generate the sensitivity maps. Simulated capacitance data are used to verify the proposed method. The results show that, by using the new method, it can reconstruct high quality images.

The amorphous formation ability, crystallization behavior and magnetic properties of SmCo7 magnets melt-spun at 30 and 40 m/s have been studied. The ribbons melt-spun at 40 m/s exhibit amorphous structure in the range of 0.15x0.25 for SmCo7-x(Cr3C2)x alloys. In the amorphous state, these alloys are soft magnetic with intrinsic coercive field iHc of the order of 40-70 Oe. After annealing at 750 °C for 5 min, the alloy shows enhenced magnetic properties with iHc of 7.98 kOe, Mr of 55.05 emu/g, and Mr of 70.99 emu/g. The MFM image reveals a uniform distribution of individual grains with average size about 20 nm and a domain size about 100250 nm in width. This interaction domain results in the enhancement of the magnetic properties.

Membrane bioreactor (MBR) is considered to be a promising technology for combine biological with filtration and many advantages over conventional activated sludge (CAS) processes. In this study, the submerged membrane bioreactor which was explored by our research group and JDL Environmental Protection Ltd. at condition of aerobic-MBR and SBR-MBR were investigated. Hydraulic characteristics of MBR by the tracer experiments showed the total dead space (Vd, %) in the MBR was 3.2%. Compared with aerobic-MBR situation, the SBR-MBR exhibited better performance of average NH4+-N, total nitrogen, and phosphorus removal efficiency 90%, 86%, 57% respectively. The content of protein was correlated to sludge activity and organic matter. The initial membrane fouling was caused by layer pollution and subsequently the extra-cellular polymeric substances (EPS) contributed.

In this paper, the Fe-9Si-6Al soft magnetic composite has been prepared via powder particles coated with aluminum oxide and silicone. The magnetic properties and microstructure of Fe-Si-Al SMC has been investigated. Results showed that the powder particles surface contained a thin insulating layer made of aluminum oxide and silicone. After annealed at 800°C for 60min, the particles of component are all by themselves and the insulating layer is not destroyed. The Fe-Si-Al SMC has excellent magnetic properties. The magnetic permeability is steady with the frequency changing at 5kHz-100kHz range.

Nanocrystalline magnets (SmCo5)94(Cr3C2)6 were prepared using melt-spinning and their magnetic behaviors were investigated by studying their structures and magnetic properties. The alloys prepared using rapid solidification consisted of SmCo5 matrix phase, MgCu2-type SmCo2 secondary phase, and small traces of Sm2Co7 phase. The solidification with higher wheel speed were found to be preferable for the formation of single SmCo2 secondary phase. Relatively high coercive values of 28–36 kOe and high reduced remanence of 0.78–0.79 were observed for the SmCo5/SmCo2 nanocrystalline magnets. The shape of the corresponding magnetization curves revealed that two magnetization processes, nucleation and pinning of domain walls, took place in these magnets. The Henkel plots indicated strong inter-grain exchange coupling effect in these ribbons, consequently resulted in the phenomena of domains interacting with each other and enhancement of the remanence in the ribbons.

Two different ionic liquid of the N-(3-sulfonic group) propyl pyrrolidone hydrosulfate ([C3SO3Hnhp]HSO4) and the 2-pyrrolidone hydrosulfate ([Hnhp]HSO4) have been synthesized and used as catalyst for the biodiesel production from the soybean oil. The former exhibited better catalytic performance than that of the later one and the reaction conditions corresponding to [C3SO3Hnhp]HSO4 were optimized. Under the optimal condition the yield of methyl ester reached 93.6% and after repeatedly used for four times the catalytic activity for [C3SO3Hnhp]HSO4 still maintained in a high level.

Microwave heating method was used to synthesize (Ni0.5Zn0.5)Fe2O4 ferrite from a stoichiometric mixture of corresponding metal oxides powders. The structural, chemical and magnetic properties of Ni-Zn ferrite was determined by X-ray powder diffraction (XRD) and vibrating sample magnetometry (VSM). Results showed that the material was spinel structure with a high purity with an estimated crystallite size of ∼30nm by X-ray line profile fitting. The sample systhetized by microwave energy at 860°C for 30min has magnetic properties of intrinsic coercivity 55.94G and saturation magnetization 19.43 emu/g. Compared with conventional burning method, microwave systhesis of NiZn ferrite is more efficient and reducing a lots of soaking time.

Video summarization aims at providing compact representation containing enough information for users to understand the entire content or important events, which serves as the fundamental process in content-based video analysis. This paper presents a novel sport video summarization algorithm by mining consistent field-of-views applied visual and temporal information in a totally unsurprised manner. After videos are broken into shots, a content-based similarity measure is proposed in the shot level to structurally analysis the visually matching cost of original videos. Then modified agglomerative hierarchical clustering is performed with an energy-based function to match the statistical distribution of various views in game videos and a refined distance metric is proposed as similarity measure of two shots. Extended temporal prior is introduced to meet the fact that temporally neighbored shots with similar duration are more likely to be in the same clusters. Experiments on a database of 6 sport genres with over 10251 minutes of videos from different sources achieved an average accuracy of 91.5% and quantitative results are presented to justify each choice made in the design of our algorithm. Our proposed algorithm is applied for the non-linear browsing service of Orangesports by France Telecomm and an android based app has been implemented for smart mobile devices.

This study addresses a non-supervised approach to extract TV programs via repetition based detection of the Inter-Programs (IPs) and audio based segmentation and classification algorithm to analyze the massive raw TV stream. Acoustic and visual information are both adopted for IPs detection so as to avoid missing true-positive. Novel audio fingerprints scheme and shot based indexing algorithm are introduced to guarantee the efficient and superior detection performance. After the TV programs are further segmented into clips, Gaussian Mixture Models (GMMs) are used to classify the clips into three types, namely, pure speech, non-pure speech, and non-speech. Experiments on a test dataset composed of more than 500 hours content-unknown TV streams show that the F-measure of the programs extraction and content analysis achieve 0.986 and 0.887 respectively. The experiments also demonstrate that the proposed algorithm for detecting repeated IPs outperforms the state-of-art approach.

We present our findings of increased fracture toughness in high performance Sm2Co17-type magnet. The new Sm(Co 0.65 Fe 0.24 Cu 0.08 Zr 0.03)7.6magnet exhibits remanence of 11.13 kGs, maximum energy of 30.2 MGOe. This magnet shows not only a superhigh fracture toughness of 5.56 MPa m 1/2 but also distinguished yielding combined with an enhanced plastic plateau of 30 % to failure. It has been found that debonding, crack deflection, crac k branching and bridging are the major toughening mechanisms for the observed high toughness and long yield plateau. Long and straight screw dislocations observed in Sm rich precipitates accelerate the debonding of Sm rich grains.

According to the problem that the concrete realization process of cloud manufacturing service mode was researched not enough, the process of manufacturing capability semantic modeling and intelligent service matching was studied in cloud manufacturing platform. Firstly, the properties and characteristics of manufacturing resources and demand were analyzed; then intelligent matching algorithm based on ontology semantic similarity was put forwarded, this algorithm comprehensive the advantage of semantic distance, properties, structure and examples four kinds of similarity algorithm, multistage matching, step by step refinements, realized the intelligent matching of supply and demand. Finally, the supply and demand intelligent matching process was build, based on analyzing the manufacturing resource and demand attributes and characteristics.

Increasing impermeable surface area has become a serious burden for drainage of urban stormwater. It is thus important to know how much surface runoff may be generated by storms of varying intensity and duration, especially on a continual daily basis. In this paper, the field hydrology model-DRAINMOD was used to simulate daily surface runoff under different surface condition in Xi’an, China. As a major hydrological components in DRAINMOD, daily evapotranspirations were calculated with the FAO Penman-Monteith method and read into the model. Infiltration parameters were considered as calibration factors in the modeling process. Available data from a local rainfall-runoff experiment were used for model calibration by matching the model predicted surface runoff with the measured values on an event basis. The calibrated model was then used for long term simulations in order to examine the impact of varying climatic conditions and land cover on urban runoff. The modeling results may provide a practical guidance for city storm water management.

Short-chain triglycerides i.e. the low calorie oil was produced by transesterification with soybean oil and glycerol triacetate using sodium methoxide as catalyst. The reaction conditions were optimized and the yield reached 73.14 % under this conditions. The calorific values of the soybean oil and the product were measured and the value for the later was 32 450 J/g which was approximately 71 % of the former.

The 1, 3-specific lipase of Lipozymetlim was used as catalyst to produce low calorie oil through the reaction of soybean oil with glycerol triacetate. The effects of catalyst using amount, molar ratio of the substrates, reaction temperature and reaction time on the product yields were investigated. The orthogonal experiment results showed that the optimal reaction conditions were the substrate molar ratio of 2:1, reaction temperature of 60 °C, reaction time of 24 h, and 10 % enzyme adding amount per gram of substrate. Under such conditions, the reaction yield was 79.56 %. After 5 times reuse of the enzyme, the yield still could reach 58.94 %. The calorific value of the product was measured by calorimetric method and the value was 35 027 J/g which was about 75 % of the corresponding value for soybean oil.

Superconductor samples Mg(B1-2x(SiC)x)2 (x=0, 5%, 10%) are synthesized from nano SiC, Mg and amorphous boron powders by microwave direct synthesis in a short time. Powder X-ray diffraction (XRD) analysis indicates that the phases of the synthesis sample are MgB2 (major phase) and a small amount of MgO and Mg2Si. The main peaks of MgB2, (100), (101), (002) and (110) are shift to the higher diffraction angle position and the width of half height of the diffraction plane is broaden for the SiC doping Mg(B1-2x(SiC)x)2, which show that the B positions of MgB2 are partly substituted and the grains of MgB2 are fine. Scanning electron microscope (SEM) observation shows that the MgB2 grain size is very small and the sample is tightness (compact). The onset superconducting transition temperature of the Mg(B1-2x(SiC)x)2 (x=0, 5%, 10%) samples measured by magnetization measurement are about 37.6 K, 37.0 K, 36.8 K respectively. The critical current density Jc are calculated according to the Bean model from the magnetization hysteresis loop of the slab Mg(B1-2x(SiC)x)2 (x=0, 5%, 10%) samples. The critical current density Jc of nano SiC doping Mg(B1-2x(SiC)x)2 samples are greatly enhanced. In higher external magnetic field, the Jc of 10% SiC doped sample is the highest; in lower external magnetic field, the Jc of 5% SiC doped sample is the highest; while in the whole external magnetic field, the Jc of undoped sample is the lowest.

we investigate the electronic structure, chemical bonding, optical and elastic properties of the novel rhenium nitrides, hexagonal phase re3n and re2n by using density-functional theory (dft) within generalized gradient approximation (gga). the calculated equilibrium lattice constants of both re3n and re2n are in reasonable agreement with the experimental results. the band structure along the higher symmetry axes in the Brillouin zone, the density of states (dos) and the partial density of states (pdos) are presented. the calculated energy band structures and dos show that re3n and re2n are metal compounds. The dos and pdos show that the dos at the fermi level (ef) is located at the bottom of a valley and originate mainly from the 5d electrons of re. population analyses suggest that the chemical bonding in re3n and re2n has predominantly covalent character with mixed covalent and ionic characteristics. the dielectric function, reflectivity, absorption coefficient, refractive index, electron energy-loss function and optical conductivity are presented in an energy range for discussing the optical properties of re3n and re2n. basic mechanical properties, such as elastic constants cij, bulk modulus b and shear modulus g are calculated. The young’s modulus e, poisson's ratio ν and bh/gh are also predicted. results conclude that the hexagonal phase re3n and re2n are mechanical stable and behaves in a ductile manner. polycrystalline elastic anisotropy is also derived from polycrystalline bulk modulus b and shear modulus g.

Glycidyl trimethyl ammonium chloride (GTA) has been synthesized and used as cross-linked cationic reagent to prepare modified starch. The adsorption behavior of Cr(VI) onto the cross-linked cationic starch was studied systematically. The adsorption time and the temperature took great effects on the adsorption performance of the adsorbent. After a suitable time the adsorption could reach an equilibrium state and the adsorption capacity increased with the decrease of the temperature. The adsorption isotherm and the kinetic equation were established and they fit well with the Freundlich and Lagergren models, respectively. The used adsorbent was regenerated with acid medium and the recycling of the regenerated adsorbent has also been investigated.

the excessive exploration and utilization of land is the main cause of desertification. Utilizing and exploring sinking sandy land has been accelerating the process of desertification. The data sources for our research are mainly based on remote sensing data, and these data have been processed through a series of correcting and enhancing measures. By using these data and the results of some field investigations, the image features have been analyzed and then the interpretation keys of sinking sandy land are established. The distribution of sinking sandy land has been clarified by using the following two remote sensing methods: Man-Computer Interactive Interpretation classification and Supervised Classification. A comparison between the precision of these two methods has been done. The research is trying to find the most suitable method for the study of the spatial distribution of the sinking sandy land in West Ujimqin Banner and also trying to lay a scientific and theoretical foundation for determining the spatial distribution of the sinking sandy land in Inner Mongolia.

Chelating electroplating sludge contains high grade of toxic metals or heavy metals, so this sludge should be treated and recovered of valuable metals from it. This paper mainly studied on the recovery process of Copper, Nickel and Zinc process from sulfuric acid leaching solution of roasted chelating electroplated sludge. It provided an effective technique for recovery of valuable metals from acid leaching solution. The efficiency of the process had been measured with the metal recovery rate. Experimental results showed that recovery rate of Copper and Nickel can respectively achieve at 99.30% and 97.00% from acid leaching solution after removal iron with zinc powder used reducing agent. The process has simple operation and high recovery rate. It can solve the environmental pollution problem of electroplating sludge and valuable metals can be recovered from which. It could bring better economic and environmental benefits to the enterprise.

How to estimate the modal parameters (including natural frequencies and mode shapes) of an offshore platform accurately is crucial for the health monitoring problems. The purpose of this paper is to identify the modal parameters of a physical jacket-type platform model from measured modal testing data using Prony’s method. In the modal testing, the identified false modes are unavoidable and bring much difficulty to determine the accurate modal parameters. To solve these problems, in this paper, the Modal Phase Collinearity (MPC) and Modal Assurance Criterion (MAC) are applied to distinguish the true and false modal. The measured data are extracted from a physical model of a realistic offshore platform. And the results demonstrate that the modal parameters of the first two modes of each direction can be accurately estimated by using the proposed method.