The aniline intercalated MoO₃ organic-inorganic hybrid compound as precursor was prepared. Then it was treated as Oxidative polymerization in air atmosphere at 120 ℃, the polyaniline intercalated MoO₃ composite was constructed. Rhodamine B (RhB) was used as the target degradation material, and the photocatalytic of MoO₃ composite was investigated The effects of light time, catalyst dosage and pH value on photocatalytic degradation efficiency were studied. The results show that the MoO₃/PANI composites have good photocatalytic degradation effect on Rhodamine B under the conditions of pH value of 1~4, catalyst mass concentration of 0.30~0.40 g/L and illumination time of 2.0 h, moreover that the highest degradation rate is up to 98.00%.

    Pyridine-sulfonic acid functionalized ionic liquid([PY-BS] [TsO]) is prepared by the reaction of p-toluenesulfonic acid with sulfonic groups amphoteric salt(PY-BS) that is prepared by the reaction of Pyridine with 1,4butyl sultone. Then, [PY-BS][TsO] ionic liquid can be characterized by IR, NMR. And it is chosen as the catalyst and solvent in the Friedel-Craft acylation of 2-methoxynaphthalene optimizing the reaction conditions by orthogonal experiment of L₉(3⁴). The orthogonal experiment result shows that the conversion of 2-methoxynaphthalene (2-MN) reaches 90.7% and the selectivity of 2-methoxy-1-acetyl naphthalene as the main products is 99.4% in the follwing conditions that the 2methoxynaphthalene is 5 mmol, the mol ratio of 2-methoxynaphthalene/acetic anhydride is 1∶5, ionic liquid is 0.3 g and reaction time is 6.0 h at 120 ℃. The main factors affecting the reaction rate and product selectivity are the reaction time and temperature.

      Based on three-dimensional somatic environment of the real clover type hydrocracking catalyst as the computational entity and the simulated industrial operating temperature as the boundary condition. The Fourier heat transfer equation is solved by the meshless numerical method. Then the influence of external temperature fluctuation on the internal temperature distribution of the catalyst was analyzed by using the calculated results. The analysis results show that the actual reactions in the catalyst is not isothermal reaction. At the same time, the fluctuation of the reaction temperature and the hot spot inside the catalyst have a certain influence on the temperature distribution for the catalyst cluster in the hydrocracking process. Catalyst bulk phase inner average temperature is influenced by heat of reaction, the catalyst particle size, material density, reaction space velocity and catalyst inner hotspot distribution.

        In recent years, the natural gas hydrate as a new type of high efficiency, energy saving, environmental protection energy was praised by the world's energy industry, and its potential value could not be ignored. The study of gas hydrate was integrated in different countries of the world history, the present research situation and prospect analysis. In view of the natural gas hydrate in China started to be late and a series of actual situation, a set of research strategies suitable for the current development of our country was put forward, and some problems in the process of the actual mining were introduced.

       In order to minimize the loss of life and property caused by sudden marine oil spills, it was necessary to apply intellectual technology to marine oil spills management system, combining human wisdom and the wisdom of computer technology, wisdom marine oil spill management system was established. The basic concepts and technology development were introduced and the wisdom and intelligence technology would be applied to marine oil spill management system. The wisdom marine oil spill management was initially established to reduce or even avoid the occurrence of oil spills at sea, to protect the marine environment, and to achieve sustainable and healthy development of marine and depot business.

      The ice blocking could happen during the process of conveying products oil in the pipeline, because of the low temperature in north China in winter. The pipeline occurred ice blocking, not only oil transport was affected but also unnecessary damage of production was caused, and the potential safety hazard could exist when it became serious. Based on thenumerical simulation software FLUENT, the flow field distribution was calculated around the single and multiple ice blocks in products pipeline which were in different height. The research results showed that increasing with the height of the ice wall, the pressure difference of front and back produced nonlinear changes, the pressure distribution regularities of multiple ice also produced nonlinear changes. In the aspect of velocity, the velocity variation degree of front and back the ice block was relatively stable, but the velocity change process around the ice block was more obviously and layered effect was better, the speed distribution regularities of multiple ice blocks were similar to that of the single ice blocks.

      Long-term natural gas load forecasting can solve the problem of the imbalance between supply and demand of city gas and provide assistance for the city gas company's management and running. In order to improve the accuracy of predicting the longterm natural gas load，a forecasting model of natural gas longterm load was built based on SVM-GA(Support Vector MachinesGenetic Algorithm). The relevant factors influencing natural gas consumption was analyzed and determined. In order to improve prediction accuracy， the penalty factor c and the kernel parameter g of support vector machines were optimized using genetic algorithm and cross validation methods. Optimized parameters were inputted support vector machines model and long-term natural gas load forecasting was made. In a case study from a certain city，a comparative analysis was made of the forecasting results among SVM-GA，SVM and crossvalidation method combined prediction model and BP(Back Propagation) neural networks. The forecasting model based on SVM-GA was validated with a high prediction accuracy and the resulted relative mean square error，normalization mean square error，normalization absolute square error，normalization rootmean square error， maximum absolute error resulted from the SVM-GA were lower than those from SVM and crossvalidation method combined prediction model or BP neural networks by 0.58%，3.98%，2.99%，4.58%，8.64% and 6.13%，26.28%，19.71%，21.09%，31.48%. Therefore，the support vector machine and genetic algorithm combined model can accurately predict the long-term natural gas load.

      There is usually a starting pressure gradient in the tight oil. This article considers the seepage law of the crude oil flowing from the matrix to the fractures in the formation under the premise of starting the pressure gradient and some assumptions. Through the establishment of numerical model, the relationship between the pressure, permeability, core size and other factors and the degree of failure recovery in the onedimensional space is analyzed, as well as the threedimensional plate is drawn. The results show that when the core scale is very small, the main factors affecting the degree of recovery are the failure pressure difference. At the same time when the scale increases, the relationship between the recovery degree and the core length and permeability is more and more significant. Then, based on the conclusion of the previous the paper put forward the empirical formula considering the degree of calculation and recovery under various factors, and extend the space to three dimensions. On the basis of one dimensional revise the formula, the empirical formula of the failure rate of three dimensional matrix failure is obtained. It provides some reference for production practice.

       In view of excessive water yield of L block in Daqing oilfield, studies of activated water driving system were conduct in Xing-12 test block. Combined with block reservoir condition, suitable surfactants were selected, and optimization of driving system for activated water was carried out by the result of laboratory physical simulation experiment. It can be found that oil/water interfacial tension effectively decreased and oil recovery was enhanced with addition of surfactant. And injection pressure also rises up with increase of concentration of surfactant. In the laboratory oil driving experiment, the growth range of recovery ratio tended to slow down when the mass fraction of 1 ^# activated water exceeded to 0.08%. Eventually the paper combines with experiment results and methods of economic assessment, the oil driving system suitable for Xing-12 test block is screened out. That is the mass fraction 0.08% activated water prepared with betaine type surfactant and formation water, and optimal dosage is 0.25 PV.

      In the process of develop oil field, the main way to evaluate corrosion condition is to monitor the corrosion situation under the oil well, which can help guide and verify the implementation and the effect of the whole anticorrosion engineering. The corrosion monitoring system of DCMS is based on the principle of resistance, and the corrosion rate can be measured by the calculation of the loss of metal. The results show that DCMS can be used to monitor the corrosion speed rate in a realtime, and have the characteristics of high sensitivity, widerange application and so on, it can also provide intuitive test data that aim at the corrosion of underground which depends on the good predictability.

      Pressure machine inlet filter short piping could produce cracks in a short time. Crack parts of the macroscopic examination, chemical composition analysis, tissue imaging, scanning electron microscopy analysis, and mechanical analysis were studied. The results showed that in the corrosive medium containing H ₂S, the flange and the nozzle were subjected to welding residual stress during the manufacturing process, and the welding residual stress caused stress corrosion, resulting in cracking along the embrittlement.

       WC-10Co4Cr coatings were prepared by high velocity oxy-fuel with different spray distances. The internal structure and wear/corrosion resistance of the coating were studied. The internal structure and phase composition of the coating were analyzed by Metallographic microscope, SEM and XRD. The microscopic structure, microhardness, porosity, density, wear/ corrosion resistance properties were tested. The results showed that the particle stayed in the jet for longer time and in the process of spraying it enlarged the melting degree as the distance increased. As a result, complete flattening of particles was gained which increased the density of coating and the property of wear resistance and corrosion resistance. The coating showed the best property of wear resistance and corrosion resistance at the spray distance of 380 mm.

      Power grid is diagnosed after a failure to prevent the fault occurred by inferring the information that the fault generated.The method of model prediction (MP) and abductive reasoning network(ARN) is proposed to forecast the power system fault. MP predicted the troublefree operation data of the power grid by using historical data, and compared with the actual grid runtime data, the difference was calculated and used as the input of fault diagnosis system. ARN was used to bulid the fault diagnosis system and solve the complicated relationships between data processing and the corresponding candidate fault section. The fault location can be found before protection device and circuit breaker by combining the method of MP and ARN. The test results showed that the model prediction method can quickly and accurately diagnose the fault compared with BP neural network method.

        This paper considers the solvability of a higher-order nonlinear neutral delay difference equation. By using the Banach contraction principle a sufficient condition of the existence of Infinitely many bounded nonoscillatory solutions of the equation is given，which fills a gap in the literature.

      In view of the phenomena of using the same standard comprehensive evaluation to all students in the current university, not considering the difference of individual special ability of the students, and avoiding to produce the phenomenon of high grade and low ability of the students, the rough set theory and the average evaluation method were used to find out the weak link of students' ability and to enhance students' ability of different quantization. The experiments showed that the students' comprehensive ability could be evaluated by the rough set theory, which also provided theoretical basis for the students to improve their comprehensive quality and ability.

      E-commerce enterprise performance was one of the important issues to be considered when they developed to a certain stage, and it was realistic to research enterprise performance. SUNING was taken as an example, the typical E-commerce enterprise, 10 key factors were proposed that affected the performance and converted them into 10 key indicators to study the performance of the E-commerce enterprises. By SPSS19.0 software, the correlation test, descriptive statistics and regression analysis were made based on the 10 indicators, and the conclusion showed that the key factors influenced the E-business enterprise performance. The research conclusion would play a guiding role in the future development of E-commerce enterprises.

The poly (crystal violet) modified electrode (PCV/GCE) was prepared by cyclic voltammetry polymerization under alkaline conditions and the electrode was characterized. The electrochemical behavior of quercetin (Quercetin) on the modified electrode was investigated. The results show that poly (crystal violet) modified electrode has better electrocatalytic activity for the oxidation reduction of quercetin, the redox potential difference in PCV/GCE decreases, and the peak current increases obviously. The crystal violet on the electrode surface acts as a transfer mediator to accelerate the electron transport during the electron transfer of quercetin. In the PBS buffer solution with pH=6.5 and concentration of 0.10 mol/L,the differential pulse voltammetry (DPV) response of the poly crystal violet modified electrode is linear with quercetin 0.10~60.0 μmol/L, and the detection limit was 0.05 μmol/L(S/N=3).The crystal violet modified electrode has good performance in terms of stability, selectivity and reproducibility. The electrode is used to detect the content of quercetin in the liver tablets. The recovery rate is 98.97%~102.01%.

This article reported the method about the synthesis of a foursubstituted diphenyl phosphine oxide type allene compounds. In the solvent system of anhydrous triethylamine, 1,1-diphenylhept-2-yn-1-ol reacted with chlorodiphenylphosphine in anhydrous tetrahydrofuran, it got the desired product (1,1-diphenylhepta-1,2-dien-3-yl diphenyl phosphine oxide compound) in good yield. The structure was analyzed by NMR, IR, HRMS to confirme the structures of the desired product.

A bis Schiff base ligands was synthesized using 2-hydroxy benzaldehyde and ethylenediamine. With schlenk technique and nitrogen protecting conditions, anhydrous cobalt chloride was reacted with the ligands in a 1∶1 molar ratio to form a mononuclear cobalt (II) Schiff base complex used for electrically driven catalytic water oxidation. After purified, the complex was characterized using nuclear magnetic resonance, infrared spectroscopy and high resolution mass spectrometry. And the electrochemical performance of the catalytic oxidation of water was investigated by cyclic voltammetry using electrochemical workstation. The result indicated that the catalyst has an active electrically driven water oxidation catalytic activity under the condition of neutral pH, and the initial oxygen release potential of the oxidation peak is only 0.5 V. The multiple consecutive scan results of the CVs showed that there was no new redox reaction in the process of water oxidation.Therefore the catalytic system was with good stability. Combined with the low synthesis cost and the difficulty of synthesis and purification, the complex is considered to have good research value and application prospect in the field of catalytic water oxidation.

The residual strength evaluation of corroded pipeline carried out regularly was significant for guiding pipeline maintenance and operation safety. Effective Area Method, an important residual strength evaluation technique, was studied. A corrosion defect measure method was proposed, which was suitable for the Effective Area Method. The computer program was compiled according to the calculation model of Effective Area Method. The residual strength of an actual pipeline defect was evaluated by the Effective Area Method and Modified B31G respectively. The result showed that the Effective Area Method was less conservative than Modified B31G.

Natural gas hydrate was becoming more and more important in Chinese energy structure, which had the advantages of high gas content, low pollution and large reserves. Therefore, it was necessary to study natural gas hydrate. Aiming at the common blockage problem in transmission pipeline for natural gas hydrate, on the background of subsea level pipelines and based on the multiphase flow model, the calculating and analyzing natural gas hydrate mathematical model was established in gassolid two phase flow based on finite volume method. And the relationship was obtained between the difference of the diameter (the diameter of the pipe and the through-flow diameter) and the distance from inlet. When the inlet flow velocity and the diameter of the pipe were fixed, the stack position of the gas hydrate in the pipeline was analyzed with the difference of the diameter. Calculation results showed that with the other conditions remaining unchanged, as the increase of the distance from the pipe inlet, the change rule of the difference of the diameter was in accord with Gauss curve. Then the change rule was fitted and Gauss function equation was obtained, which could calculate the difference of diameter under a given position of pipe. Finally, through changing the diameter size of pipeline, the simulation and analysis were carried out, whose results showed that Gauss function equation also applied in pipelines with different diameters. A theoretical basis for predicting the stack position was provided in the pipeline and improving the transport efficiency of natural gas hydrate.

In order to research on the impact of imbibition effects, mechanisms and the correlation factors of the tight oil cores, the experimental devices of tight core imbibiton were established. The experiments of oil-water imbibition of tight sandstone were carried out. The effects of temperature, pressure and surfactant on the oil-water imbibition in compacted core were studied. The curves of imbibition efficiency versus time, characteristic points of curve and the influential factor of imbibition were analyzed. The imbibition law and characteristics of tight sandstone core were obtained. The results showed that the effect of imbibition was mainly occurred on the surface layer of the tight oil core. The temperature had a large effect on the second stage of imbibition. The oilwater imbibiton efficiency of the single tight oil core is about 10%, which is about 25% under the formation conditions.