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To enhance the efficiency of the Multistage depressed collector (MDC) of traveling wave tube amplifiers (TWTs), TiN film was deposited by arc ion plating. The thickness and roughness of the film were respectively measured by scanning electron microscopy (SEM) and atomic force microscopy (AFM). In order to study the effects of the preparation parameters and the process methods of substrates, the orthogonal experimental design method was applied to find out experimental optimum parameters. The analysis of experimental results showed that the film thickness decreased as the bias voltage increased within a certain range. The root mean square (rms) of roughness Rqwas the minimum value for TiN film, when the bias voltage was 150V, the maximum value of the secondary electron emission yield (SEEY) reduced from 1.5 to 1.25 at the optimum parameters.

At present, in the aquaculture environment, bait casting process of feeding machine is using time quantitative; such feeding way did not consider too much fish feeding law which will cause bait wasting and environmental pollution. An effective way to solve the problem is how to set the feeding amount through observing the fish aggregation. An intelligent bait casting method is proposed in this paper based on the machine vision technology, according to calculate the fish shoal area and shoal ratio in the feeding process. The calculate method of the fish shoal degree and flow chart of the main program is introduced. The feeding quantity is more close to the fishing bait habit. The advantage of using this method is making the bait casting more scientific and reasonable, not only saving the breeding cost, but also reducing the environment pollution.

A nanoSiO2/polyacrylamide (PAM) organic–inorganic nanocomposite system was prepared using acrylamide as the monomer, nanoSiO2 as the modifier, and ammonium persulfate as the initiator. The system was then used to investigate the impact of various factors, including amount of modifier and concentration of monomer, thereby determining the conditions for optimal reaction. Infrared spectroscopy was then used for structural characterization. Measurements using the viscosity method indicated that the viscosity average molecular weight of the product exceeded 1 million. Electron microscopy images showed that a good organic coating layer formed on the surface of the microspheres.

Commingling is employed in the petroleum industry to enhance oil recovery and reduce costs. It is of great importance to monitor the production of each oil well oilfields. Nowadays, more and more oilfields use chromatographic fingerprint to estimate single-zone production allocation. In order to insure the efficiency and affectivity of the commingled oil well exploiting, the productivity contribution of every single layer must be acquainted. Kernel partial least squares (KPLS) is a promising regression method for tackling nonlinear systems because it can efficiently compute regression coefficients in high-dimensional feature spaces by means of nonlinear kernel functions. Unlike other nonlinear partial least squares (PLS) techniques KPLS does not entail any nonlinear optimization procedures and has a complexity similar to that of linear PLS. Using the technology of crude oil chromatography fingerprint, an algorithm for predicting productivity contribution based on KPLS is proposed. The validity of the method is proved by laboratory artificial experiments. The maximum absolute error of predicted and real proportion is less than 10%. The model can also be applied to other wells which are similar to those used in the experiment. The experiment results show the prediction model is feasible.

This paper has a comprehensive analysis of the cloud logistics development momentum, in view of the commercial mode theory of Alexander Osterwalder. In combination with the three aspects of assets management such as the allocation of resources, core competitiveness and the partner network , this paper lists the commercial mode analysis of XingChenJiBian Company (STARS EXPRESS).Finally, the current problems and developing trend of cloud logistics mode under e-commerce have been sorted out.And the future of cloud logistics has been prospected in the paper based on the development of cloud logistics.

In this paper, the use of literature, logical approach, system approach and so on college sports network information management system software design, implementation steps, applications were studied. The software system can be divided into three major system components. Including sports teaching intelligent management background processing systems, POS systems sports and sports office systems composed of three systems. Use of the information resource planning ways to build a diversified, comprehensive management applications, to avoid the "information island" phenomenon.

This paper introduces an automatic shutdown system for model protection during the flutter test in high speed wind tunnels. This automatic shutdown system can be used to determine any unsafe condition through model flutter signals before triggering shutdown of wind tunnels, solving problems of delayed response and mistakes happen during manual measurement of subcritical state of model flutter. The reliability and effectiveness of this system have been proved good via wind tunnel tests, hence the possibility of damage to the model caused by flutter during the flutter test of high speed wind tunnels can be decreased.

In this paper, performance characteristics of and synthesis processes for monocomponent polyurethane waterproof coatings are introduced in detail. The effects of molar ratio of NCO/OH, mass ratio of N220/330N, and content of the NCO group, as well as the performance impact of dibutyl phthalate (DBP) are discussed. In addition, common defects in monocomponent polyurethane waterproof coatings and their prevention methods are also discussed. On the basis of the discussion presented, it can be concluded that great attention should be paid to common defects in paint production and paint application so that they can be prevented before their occurrence. Such prevention can guarantee the perfect facade of coating decoration.

This paper adopts self-designed wing model to conduct flutter test on subsonic and transonic, and obtains flutter characteristic of the model, and the test results are used for calibration and verification of flutter procedures. The sub-critical extrapolation is used to obtain the flutter sub-critical parameters and the direct observation method is used to obtain comparison of results. Error of results obtained by the two approaches does not exceed 5%, and validates reliability of the sub-critical prediction approach in continuous adjusted dynamic pressure flutter test.

To realize starting operation and reduce position estimation error of switched reluctance motor (SRM) without position sensor, a novel control method based on pulse injection, divided angle section and variable threshold is presented. The starting operation of SRM can be accomplished by injecting high frequency pulse and judging position sectors. Variable threshold is used to reduce position estimation error. The value of threshold is obtained by looking up table prestored in controller. The method avoids complicated mathematical model and is suitable for starting operation with two phases. Besides, rotor position estimation error of this method is analyzed and the method which can decreased the error is proposed. At last, the experiment has been done to verify the performance of the control method.

In this paper, for the rail U75V rail head spray quenching process temperature field, we founded model, meshed, loaded, and solved the finite element simulation of the process by using ABAQUS finite element analysis software, and carried on the site test using the infrared thermal imager, we received the changing discipline with time of the temperature of rail. The results of simulation are close with actual process. The precise calculation for the future in the process of quenching heat stress and residual stress laid the foundation experiment.

In this article, a portable XLPE cable insulation detection device is introduced. Such a device utilizes electromagnetic coupling, UHF electromagnetic wave and acoustic emission to detect partial discharge signals in power cables. By analyzing the partial discharge signals and cable temperatures, the insulation status of XLPE power cables is judged.

This document studies the deposition condition in northeast Jizhong depression by using relevant data of cores, logging and scanning electron microscope. The result indicates that the study area has 7 kinds of lithofacies, including conglomerate, sandstone, siltstone, mudstone, bauxite, carbonate rock and coal seam . Bottom-up development in the study area cover tidal flat, lagoon, delta, meandering river and braided river, a total of five kinds of sedimentary facies. Benxi Formation, Taiyuan Formation and Shanxi Formation deposited in transitional facies, which has high generation potential of Hydrocarbon. Lower and upper Shihezi Formation is mainly a set of river deposition as a good reservoir. The top of upper Shihezi Formation and Shiqianfen Formation are mainly mudstone, which is conducive to seal oil and gas.

The high speed milling test of CVD composite coated tool cutting natural marble is carried out. Measured milling forces of different parameters by the dynamometer and analyzed the influence of different parameters on the cutting force. Observed the wear appearance by the SEM and analyzed the wear mechanism of CVD tool. The results of the experiment show that the cutting force increases along with the cutting depth and feed speed increase, decreases along with the spindle speed and the influence of the cutting depth is the largest. The wear mechanisms of CVD tool when milling the natural marble include the removal of mechanical loss on the tool substrate, oxidation wear and adhesion wear. The removal of mechanical loss and adhesion wear couple with the whole process of CVD composite coated tool.

Based on the support of GIS tools and land database, this paper put the LUCC theory into practice. The ArcGIS space analysis and transition matrix are used for the research of land use change of Dalian city through the 20 years’ period. Result shows that, from the year 1990 to the year 2010, enormous transformation has happened in land use type, of which the overall characteristics of transformation are reduction of wood land and grass land, with the increasing of construction land and water area. The trend of city construction area’s enlarging and agricultural land resources’ reducing is very obvious.

The efficiency of path clearance optimization method is low and the corresponding path may collide with obstacles when applying it to the original path planned by RRTConCon algorithm. The paper analyzed the original path clearance and corridor width and chose proper moving distance towards the medial axis and binary search step. The paper also analyzed the collision reason and proposed an method to deal with it. The method moves collision configurations to the free space and retracts them to the medial axis, then adds them to the retracted path. The experimental results showed the measures are effective to improve efficiency and could deal with collision problem.

Based on engineering tests of rubble bed, numerical simulation of loading tests adopted discrete element software PFC2D was designed. The numerical model of rubble bed considering characteristics of shape, particle size, compactness and aggregate gradation was established, and then the engineering tests were reappeared by the means of applying continuous loading. The mechanical mechanism of rubble bed under continuous loading was analyzed based on comparison on stress-strain curve of engineering test with numerical simulation and the settlement and failure law of rubble bed under continuous loading were obtained. The work also discussed the effect of different compactness on bearing capacity of rubble bed and fitted the curve between compactness and bearing capacity, so it can be taken as a reference for analysis on loading compaction and bearing capacity of rubble bed.

Polysulfone ultrafiltration membrane was prepared by the method of Phase inversion. Casting solution consists of methanol, ethyl alcohol and DMAC as coagulation bath. The concentration of the additive was 5%. Section structure and surface structure of polysulfone ultrafiltration membrane were tested and characterized.

In recent years, the increasing Debris flow has been drawing the geologists' attention for its massive destructive force. At present, the research on the debris flow are mainly based on comprehensive multi-factors evaluation or singlue factor qualitative anlalysis. However, all factors have the impact on the debris flow. At present, the research on the factors that foundamentally affecting the debris flow or its character is quite few. This paper use the method of stepwise discriminant analysis to minimize the correlation and repeatability between factors to ensure the selected factor can be fully represent the character of debris flow. In addition, classification is an important way to illustrate general picture of the debris flow. This paper classified the selected 6 key factors by method of FCM (Fussy C Means) to achieve the transition and evolution from general geological classification to the accurate quantitative analysis. The result of such classification will benefit the debris flow cognition and disaster prevention measures.

With Al2O3micro-powder as main raw material, a kind of microporous corundum aggregate was prepared by adding nanoAl2O3powder. Effect of nanoAl2O3powder on the properties of microporous corundum aggregates and its sintering mechanism were studied. The results show that, the closed porosity of sinter is too low when adding too less nanoAl2O3powder; however, excessive nanoAl2O3powder would lead to the separation of grain boundary and pores during the sintering process, partial crystal grow up abnormally, the relative density of sinter reduces. Microporous corundum aggregate with 5.2% apparent porosity and 9.2% closed porosity can be obtained with 3wt% nanoAl2O3powder in this study.

Randomized sampling-based motion planners could efficiently generate collision-free motion paths. However, these paths have some quality problems (with respect to quality measures, such as path length, clearance and smoothness), especially in high dimensional configuration spaces. Thus, researchers studied some path optimization methods to improve path quality and to make paths suitable for practical applications. This paper reviews some of the most influential path optimization methods and gives an overall perspective on the most widely used ideas in the field.

This paper aims to study the heat collecting efficiency of the solar air collector with ten groups of single pipe in parallel. The simulations and experimental verification are carried out to obtain the best angle and air inlet flow rate. The result is that when the angle of the collector is 45 °and the inlet flow rate is 48.6 m3/h (2.7 m/s), the heating effect is the best for the solar air collector we have studied in this article. The average collection efficiency of it during stable operation can reach 65%.The simulation results are consistent with the experimental results. In practical application the results can provide a theoretical foundation to choose the appropriate flow rate and angle of the collector.

Shape recovery is a critical characterization of the Shape Memory Polymers (SMP); so far, there has not been a set of uniform specifications, however, on the deformation recovery characterization of SMP, more exactly, on the shape recovery ratio measurement. A simple and effective experimental method is designed to obtain the shape recovery ratio of SMP; and a series of experiments are carried out to measure the shape recovery ratio of a thermoset shape-memory epoxy resin within the finite bending deformation at various test temperatures. And the results show that the shape recovery ratio and rate of the thin sample are larger than that of the thick one; the deformation curvature has little effect on the shape recovery ratio with the test temperatures over, or below, the glass-transition temperature,Tg, but has significant effect nearTg. The conclusions provide an important basis for the structural design of SMP.

In this paper, the effect of rail head organization, cooling and quenching microstructure transformation time in different cooling speed are analyzed by the numerical simulation of the 60kg/m U75V, and study the change law of the rail temperature field and microstructure in the quenching process in the field.

Aiming at the 2.4m×2.4m wind tunnel, this paper introduces the floating suspension system (“FSS”) in the full-mode flutter test, analyzes the impact of the model’s “free” movement to the elastic vibration mode and verifies the control effect of the system to the pitching and rolling movements of the model. Test results show that the FSS system may realize the free movement of the flutter model in five directions other than the axial direction without impacting the elastic vibration mode; FSS system controls through two independent channels, namely, the pitch and the roll; load reduction on the model and the steel wire may be realized by cutting down the pitch and roll angles of the model and the control of FSS to the pitching and rolling movement of the model get guaranteed by selecting appropriate control parameters.

PCD diamond cutting tools which named sintering diamond tool is the main cutting tool of the natural granite, the cutting characteristics of that have great influence on machining efficiency and machining quality. At present, most scholars are relatively mature on the research of diamond tool wear condition by the physical attributes of the PCD diamond tool and physical components of natural stone material. This paper studies the impact of cutting parameters on the tool wear, optimization of process parameters.

Topical search engine is an extension of general-purpose search engines, which has become an important research subject in Web information retrieval recently. Focusing on the development of Web 2.0 applications, a result ranking approach is proposed on the basis of LDA model to rank the search results from Web forums. Compared with traditional methods, this approach takes up less storage space, and can more quickly and accurately respond to user inquiries. This work has important significance for the research of improving the performance of retrieval results of web forums.

protein was extracted from Antarctic krill (AK), then blended with sodium alginate (SA) , prepare the spinning solution, the rheological properties of spinning solution were studied by Brookfield DV-C digital viscosimeter. AKP/SA fibers were prepared via wet spinning with CaCl2 and PEG as coagulator .The morphology, tensile strength and thermal property of AKP/SA fibers were characterized by polarized light microscopy, monofilament strength tester and thermal gravimetric analysis (TGA) instrument. The result shows that the shear viscosities of spinning solution decrease with the increasing of shear rate and decreasing of concentration. the optimal Preparation Process of AKP/SA fibers were 5% concentration of SA, proportion of 1: 9 for AKP solution to SA solution, and proportion of 5:1 for CaCl2 to PEG. The cross-section of AKP/SA fiber is a jagged shape. Thermal property of AKP/SA fibers is similar to SA fibers.

In this paper, built fire control safety evaluation index system according to the underground engineering characteristics of fire and introduce a method to determine the weighing values for assessment index. Put fuzzy comprehensive assessment method on underground engineering of fire safety assessment, then use fuzzy mathematics theory build a model of engineering of fire safety assessment fuzzy evaluation, and through the underground engineering design of fire safety assessment, to prove its scientific and effective.

In this paper, the shock wave characteristics of pulsed discharge in liquid which occurred in the pipe with rod-rod electrodes were studied. The effects of shock wave peak pressure in the discharge were studied with changed the discharge voltage and electrode gap. The results show that the peak pressure of shock wave increased with the increasing of voltage. When the discharge voltage 22kV, the peak pressure of shock wave increased first and then decreased with the electrode gap increased. However, the discharge voltages 26kV and 28kV, the peak pressure of shock waves increased with electrode gap increased. The pressure of the shock wave (Pr) decays exponentially with the distance (r) from the discharging center. Under this experimental condition, the shock wave intensity is calculated by averaging many values of the experiment, and the experience formula is Pr = 2.56E·e-0.4831r.

New macroporous carbons are prepared using phenolic resin foam as a carbon precursor. The synthesis scheme consisted of: (a) preparation of the phenolic resin foams, (b) carbonization of the phenolic resin foams. The synthesized phenolic resin foams were modificated by the hybrid SiO2nanomaterials for the first. The obtained macroporous carbons with better air tightness have potential application in catalyst support. Moreover, the shape of the macroporous carbons could be controlled by simply adjusting the phenolic resin foams.

Phenolic foam offer a multitude of advantage for energy saving and fire, however, they are brittleness and need to be improved. Nanostructured inorganic particles are good modifiers to enhance the toughness, but the problem is that inorganic particles have poor compatibility with polymer materials. To solve this problem, here SiO2and Poly acrylic acid (PAA) hybrid nanoparticles were used as a reinforcing agent, which were prepared by silica sol and polyacrylic acid. The analysis shows that the hybrid nanoparticles effectively improve the compressive strength, the compressive strength and cell structures.

The fate of oil spilled on seawater is an important issue for marine environment. This paper studied the dissolution of two crude oils and the photodegradation of their water-soluble fraction (WSF). The relationship between the solubility and the component of the crude oils was studied by gas chromatograph, UV absorption and synchronous fluorescence spectrum, and the result indicated that the aromatic hydrocarbon was liable to dissolve in water and the dissolved organic matter (DOM) in seawater enhanced the dissolution of crude oils. Moreover, the photodegradation of WSF accorded with the pseudo-first order reaction, and the reaction rate constants for WSF 1 and 2 were 0.088 and 0.121 h-1, respectively. This investigation is helpful for better understanding the transformation of crude oil spilled on the sea.

Nearly all the chlorinated aromatic hydrocarbons are highly hazardous pollutants which do harm to organisms and have to be disposed before entering into environment. The dechlorination mechanisms of mono-chlorobenzene under hydrothermal condition (200°C, 1.5MPa) was investigated in this paper by quantum chemical methods, corresponding experiments was performed to verify the feasibility of the mechanisms. The results of modeling showed hydrated ferric ions reacted with mono-chlorobenzene in redox mechanisms and the activation energy needed in the reduction reaction with [Fe (H2O)6]2+ is lower than in the oxidation with [Fe (H2O)6]3+ .The experimental results were consistent with the quantum chemistry calculation of the redox mechanisms.

Being aimed at the increasing environmental problems of Poyang Lake, and mastering the changes of Poyang Lake water information timely, the parameter model of Poyang lake water information has been formed based on ENVI/IDL programming algorithm and the high-frequency MODIS data, and the Poyang Lake water information real-time monitoring system has been established in order to obtain the water information monitoring data of the Poyang Lake quickly and timely. The platform satisfied the personalized requirements needs for all trades and professions on the internet by publishing online with web technology.

Microwave energy was used to prepare modified activated carbons (GAC, GAC/MW, GAC/Ni, and GAC/Cu). The modified activated carbons were used for phenol adsorption in aqueous solution. The adsorption conditions were optimized. Adsorption capacities of the different modified activated carbons were evaluated. The effect of microwave pretreatment of activated carbons was investigated. A comparative study on the activated carbons adsorption capacities was also investigated. Under optimal conditions the results showed that there was no obvious effect on activated carbons adsorption when rising temperature and pH during the adsorption process. Stirring has a very high effect on the activated carbons adsorption capacity. The adsorption capacity of the modified activated carbons reaches 95%. MW/GAC, GAC/Ni and GAC/Cu adsorptive capacity was higher compared to the Granulated Activated Carbon (GAC) used as received. GAC treated with microwave energy has highest adsorption capacity. The adsorption capacity of GAC loaded with ion Ni2+ is higher than the activated carbon loaded with Cu2+. The untreated GAC has the lowest adsorption capacity. These results can be explained by the effect of microwave irradiation on GAC.The activated carbon loaded with Ni2+ adsorbs more microwave energy than the GAC loaded with Cu2+.

As the pre-research of analysis and performance characterization of resin system curing process in space environment, this paper designed the research method for resin system curing process research, and taking epoxy E51 and TDE85 as research objects, did the verifying experiment about the research method in terrestrial environment. The verifying experiment confirmed the feasibility of the research method, and got the conclusion that the results came from DSC and FTIR are not exactly consistent, the method of FTIR is more suitable for curing degree testing in the curing process. The mechanics performance testing showed that the rupture properties of tensile fracture surface of two systems chosen in the experiment evolved from brittle fracture to ductile fracture and the toughness of TDE85-593 was better than that of E51-593.

To effectively excite the all moving wing flutter model and limiting or quick locking model in case of bigger amplitude of the model, an excitation and limiting and locking device is designed for the high-speed wind tunnel flutter test model. This paper introduces the structure arrangement, control principle and strategy of this device. The wind tunnel flutter test indicates that this device can enhance the SNR of the test data, improve the boundary prediction precision of flutter, prevent the model from entering the flutter divergence state and protect the model and wind tunnel test equipment.

In some cases, combined use of a few centrifugal pumps can be seen frequently. In some working conditions, some of them may work under abnormal mode (take turbine mode for example). So it is needed to know the characteristics of pumps under the modes. One way to obtain the characteristics is test. In this paper, a nonlinear mathematical model is presented to describe the characteristics. The solution to the model is performed by a specialized particle swarm algorithm. A numerical example shows good agreement between model curves and pump test data.

This paper introduces an effective face detection method based on log-Gabor filters. First, Information contained in the log-Gabor transformations is analyzed. Next, 5-scale and 8-orientation log-Gabor filters are constructed to extract feature vectors. Then, a three-layer feedforward network is created for feature classification. After training the network, we test 80 samples. From the experimental result, log-Gabor filters based method has comparable detection performance with Gabor filters based method. Therefore, log-Gabor filters can encode the images more efficiently.

The Jacobian matrix represents the relationship of the linear mapping between the space velocity of robot operation and joint space velocity, which is the important link in the process of robot control. According to analyzing the gesture character of the inspection robot when it gets over the obstacles. This paper sets up the dynamitic model of robot by utilizing D-H. Based on that, it builds the Jacobian matrix by adopting differential transformation method, which establishes the foundation of the robots motion planning and real-time control.

Focus on fracture defect of DP980 in Flexible roll forming, this research have done a finite-element analysis based on explicit solver and shear damage criterion, and using element deletion of finite element software ABAQUS to realize the fracture evolution of sheet damaged area. During the modeling, parameters of fracture evolution are set, and finally gain the conclusion about the relationship between stress, strain, energy density and fracture. The research provides theoretical guidance for practical production.

This paper presents a new system for rapidly acquiring stereo images using a single camera and a pair of planar mirrors (catadioptric stereo). Firstly, the camera used to capture images is calibrated with matlab toolbox. Secondly, the position and pose of the planar mirrors relative to the fixed, calibrated camera is estimated, and this procedure is accomplished by calculating the symmetry plane of the real and reflected image corners of a chessboard. Thirdly, the relative orientation of two reflected virtual cameras is obtained. Finally, Gaussian noise is added to the image corners of the chessboard to verify the performance of the established stereo system. Experimental results show the effectiveness and robustness of our system.

To investigate the response of the bridge pounding, shaking table test was performed using 1/10 scaled reinforced concrete rigid frame bridge specimen. The influence of traveling effect on pounding and the anti-impact capability using dampers were discussed. The experimental results demonstrate that the acceleration responses of the girder and bridge piers, the frequency and the impact force are increased when the traveling wave excitation is considered. Moreover, relatively displacement of the adjacent bridge frames increased magnitudely. Dynamic responses, the frequency and the impact force are decrease when the dampers are installed.Therefore, installation of the dampers is a sustainable and effective way to improve the anti-impact capability.

Alginate/polyvinyl alcohol (PVA) composite fibers containing copper ions were prepared by wet spinning. The spinning solution and manufacturing process were researched. The composite fibers were characterized by Tensile Strength Tester, SEM and TGA. This report shows that the spinning solution is a typical kind of pseudoplastic fluid. Adding boric acid to coagulation bath and putting Cu ions into composite fibers can improve the strength. The structure of composite fibers with Cu ions is denser and there are grooves on the fiber surface. In addition, the thermal property of composite fibers is steady.

The degradation behaviour of an anhydride-cured bisphenol A diglycidyl ether (DGEBA) epoxy resin in near-critical water was studied in this paper. The experiments were performed in a stainless steel reactor (100ml) without stirring. Epoxy resin could be decomposed successfully at 270°C for 30 min. The degradation rate of epoxy resin increased with an increase in reaction temperature and reaction pressure. The degradation reaction products were characterized by gas chromatography-mass spectrometry (GC-MS). The degradation reaction was associated with the scission of ester and ether bonds which further destabilizes the epoxy network.

To reduce mercury emission in the flue gas at coal-fired power plant, it is very important and meaningful to research the mercury content and the existing status of other elements in coal. In this paper, mercury and sulfur content including their relevant relations of existing speciations from five coal samples were studied. Experimental method was based on U.S. EPA Method 7471 and experimental apparatus was automatic mercury analysis system Hydra AA. The results showed that in these 5 coal samples, the range of mercury content was from 0.284μg/g to 0.663μg/g and the average content was 0.401μg/g. The range of sulfur content was from 0.688% to 5.546% and the average content was 2.30% . The existing status of mercury and sulfur in coal was very complex. Under normal circumstances, when there was high sulfur content in coal, there was also high mercury content. However, the low sulfur coal may be of high mercury content.

Based on Aspen Plus software platform, a simulation of ethanol synthesis from biomass-derived synthesis gas processed on the assumption of both physical and thermodynamic equilibrium. The influences of these conditions such as temperature, reactor pressure and the H2 to (CO+CO2) mole ratio in the feed gas on CO and CO2 conversion and ethanol yield were investigated. The results showed that reaction temperature, pressure and synthesis gas composition have the most important effect on ethanol synthesis behavior. In this process, low temperature and high pressure would be advantageous for ethanol production.

The structures and electronic properties of (LaxAl1-x)2O3 are studied by first-principles calculation method. The results show that the composite material (LaxAl1-x)2O3 tend to be in sixfold-coordinated structure when x0.7. (LaxAl1-x)2O3 is in disorder structure and get the minimum band gap when x equals about 0.7. It suggest that (LaxAl1-x)2O3 can be synthesized as high dielectric constant material by doping La2O3 with a lower Al dopant concentrations or by fabricating (LaxAl1-x)2O3 with rich Al content.