The Al?15Si?xNb coating was used as the research object to explore the effect of Nb content on the microstructure and corrosion resistance of the coating. The microstructure of the coating was observed by metallographic microscope, the phase composition of the coating was analyzed by XRD, and the corrosion behavior of the coating in 3.5% NaCl solution was characterized and discussed by electrochemical experimental methods (including open circuit potential, impedance spectrum analysis and polarization curve analysis). The results show that the Al?15Si?xNb coating is mainly composed of α?Al, primary Si and eutectic Si. A small amount of NbAl₃ phase and Nb₅Si₃ phase are formed after Nb element is added to the coating; The addition of Nb promoted heterogeneous nucleation and significantly changed the microstructure distribution of the coating. The microstructure of Al?15Si?10Nb coating has a homogeneous distribution. Uniformly distributed α?Al, primary Si and eutectic Si will form many uniformly distributed corrosion micro?battery. It can promote Al anodic reaction and make the Al₂O₃ oxide film formed on the coating surface more continuous. The polarization curve of Al?15Si?xNb coating has passivation like characteristics. When 10% Nb is used, the self?corrosion potential and pitting potential of the coating are higher, the product film resistance is larger, and the dimensional passivation current density is lower. Therefore, Al?15Si?10Nb coating has better corrosion.

The location of high⁃speed railway stations has always been in a contradiction. The government should not only reduce the impact of high⁃speed railway stations on people's lives, but also consider the cost of demolition. How to make the location of high⁃speed railway stations more scientific has become a problem that needs careful consideration. Therefore, the model of economic contribution degree was established by using linear regression analysis and grey prediction method to obtain the economic contribution degree of high⁃speed railway station to the city;based on the relevant data of high⁃speed railway in Liaoning Province, considering the construction cost, construction time, transfer convenience and economic contribution, a high⁃speed railway station location evaluation model based on principal component analysis was proposed and the evaluation model was used to analyze the siting of three high⁃speed railway stations in Liaoning Province. The results show that the siting of Shenyang North Railway Station is the most successful,and the passenger flow and distance from the city center are the important factors affecting the development of high⁃speed railway.

A single terminal fault location method for overhead transmission lines in general interconnected power system with n⁃bus was proposed. High accuracy in fault location was achieved by using both an accurate distributed parameters model for the faulted transmission line, and a two⁃bus Thevenin equivalent network model for the power system that accurately accounted for its inter connectivity. The method was tested by using transient fault data obtained from MATLAB simulations of an 11⁃bus interconnected power system. The results show that the method is capable of estimating the fault distance with high accuracy for various fault conditions. And it is sensitive to errors in the value of the local bus impedance, but insensitive to errors in the value of the remote bus impedance.

The corrosion damage mechanism of heat exchanger in visbreaking unit was studied, through field morphology observation, scanning electron microscopy (SEM) micromorphology, energy spectrum analysis (EDS) and corrosion coupon experiments, and find out the naphthenic acid corrosion damage reason of the exchange tube heat exchanger and baffle plate, further analyzes the naphthenic acid corrosion mechanism of carbon steel; Then through a variety of material corrosion coupon experimental comparison, the anti⁃corrosion measures are put forward. The research results show that the corrosion of heat exchanger leakage and crude oil viscosity device, high acid value, the water content of the working temperature of heat exchanger and the material, dehydration of crude oil and reasonable change of the working temperature and material of the heat exchanger can effectively reduce the corrosion damage of the heat exchanger of the viscosity reducing device.

The geometrical structure of the 1,2,3⁃triazole compounds was optimized by B3LYP/6⁃31G* in density functional theory (DFT), and the obtained structure was confirmed to be the optimal structure by frequency calculation. Based on the optimized configuration, the frontier orbital energy levels and energy gaps of compounds were analyzed. The charge of ADCH in the molecule was calculated, and the theoretical absorption spectra, fluorescence emission wavelengths and IR spectra of these compounds were simulated. Through the analysis of the hydrogen bond interaction with HIV⁃1 protease, it is concluded that this series of derivatives is expected to be used as an imaging anti⁃protein inhibitor. In addition, the reaction mechanism between β⁃lactam carbene and 3,6⁃dipyrazine⁃1,2,4,5⁃tetrazine was studied, and the synthesis mechanism was further clarified, which provided a theoretical basis for the future synthesis of the series of compounds. This provides a theoretical basis for the synthesis of this series of compounds in the future.

The effect of alkali metal modification on g-C ₃N ₄ photocatalyst was systematically studied. The density functional theory is used to explain the microscopic mechanism of different alkali metal modification on improving photocatalytic activity from the various angles of geometry and electronic structure. The results show that the binding energies of alkali metals and g-C ₃N ₄ become weaker and weaker with the increase of the number of extra-nuclear electronic layers of Li, Na, K and Rb atoms, and the influence on the structure of g-C ₃N ₄ is weaker and weaker. The electronic structure analysis shows that Li, Na, and K atoms have an activation effect on g-C ₃N ₄, and Rb atoms have a passivation effect on the surface of g-C ₃N ₄. At the same time, the adsorption of N ₂ molecules on M-g-C ₃N ₄ (M=Li, Na, K, Rb) is simulated, and the interaction mechanism between N ₂ molecules and alkali metals is understood. By analyzing the adsorption energy, structural parameters and electronic properties of N ₂ adsorption, it is found that the influence of Li and Na atoms on N ₂ adsorption is greater. The N—N bond of N ₂ is elongated, and the K and Rb atoms have little effect on N ₂. Alkali metal modified g-C ₃N ₄ is more beneficial for the adsorption of N ₂ molecules than pure g-C ₃N ₄, but as the atomic radius of the alkali metal increases, the adsorption capacity becomes weaker and weaker, and the electron transfer becomes less and less. That is to say, the ability of activating N ₂ molecule decreases in the order of Li, Na, K and Rb.

Based on the Kuznets curve (EKC curve) model, the environment-income logarithmic model with cubic terms is constructed, and the four types of regional pollution indicators data including water pollution, air pollution and solid waste pollution in China from 2000 to 2014 are utilized. And the relevant data of environmental monitoring in Liaoning Province. The regression curve with the best fitting degree was obtained, and the data of the whole country and Liaoning Province in 2015 were verified. The relationship between environmental pollution indicators and economic growth (per capita GDP) in Liaoning Province and the whole country was analyzed and forecasted.The results show that, both the Liaoning Province and the whole country, with the increase in per capita GDP, the per capita wastewater discharge and smoke dust emissions increase, and the per capita chemical oxygen demand emissions and sulfur dioxide emissions decrease.

Superhydrophobic fiber membranes have become a hotspot of research in the field of functional surfaces due to their unique surface properties. Electrospinning as an emerging technique is simple to operate, and can effectively modulate the surface morphology of nanofibers and realize micro/nano double structure selfassembly. Thus, superhydrophobic micro/nano fiber surface materials are obtained. The surface morphology and physical properties of the micro/nano fibers prepared by this technique are close to those of natural fiber superhydrophobic materials. This article first introduces the selfcleaning theorectical basis of superhydrophobic surface materials and the technical principle of electrospinning in brief, and then focused on the latest research progress of electrospinning technology to prepare superhydrophobic surface materials.

Optimizing the storage and transportation logistics system focus on the optimization of the oil supply chain. It is necessary to take into account the cost of each link in the process of oil logistics, and to formulate the optimization scheme according to the actual needs of the enterprise itself. Based on the related theories of oil storage and logistics, combined with practical production situation of a transfer oil terminal, the existing storage and transportation facilities, such as tanks, cranes and loading systems, are optimized and integrated, and mathematical models are established to optimize the distribution and transportation problems so as to reduce operating costs and bring more economic benefits for the enterprises.

The real estate has played more and more important effect on our country's economic development, in recent years, the speed of all the real estate was already sputtering. According to the current situation of the real estate, an indicator system was established based on factor analysis which included scale, supply and demand and price to evaluate the comprehensive development of the real estate by using 35 cities data. By using the scientific method to determine the weights of every different factor, the comprehensive evaluate results of the cities real estate were obtained. Then the results of the comprehensive evaluation were analyzed in depth by using the charts and tables, and the cities were classified and reasonable suggestions were proposed based on the cities real estate at last.

The resource allocation was very important in DP, but it didn't take into account the order of the time for distribution object. By using the DP, the onedimensional theory of resources allocation was applied. An example was given for college student exam-time arrangement with utility theory, the process of the dynamic planning was handled and Gantt charts were demonstrated together. And the original resources allocation was of obvious practical significance.

he hydrogen desulfurization of four kinds of low-quality diesel oils using HPL-1 as was studied on a smallsized hydrogenation unit. The reaction kinetics and the effects of reaction temperature, reaction pressure, volume space velocity and volumetric hydrogen/oil ratio on desulfurization rate have been investigated. The results showed the optimal hydrodesulfurization condition as follows: reaction temperature 360 ℃, pressure 7.0 MPa, space velocity 1.0h^-1, and volumetric hydrogen/oil ratio 800:1. Under this condition, the lowquality diesel desulfurization rate can be reached up to 9657%. Moreover, a 0.5 order kinetic model for lowquality diesel was setabilished based on the factors of pressure, hydrogen/oil ratio and space velocity parameters correction. The results indicate that the experimental values and simulation values are in good coincide for four kinds of low-quality diesel sulfur content.

Based on a huge number of literatures about income satisfaction and measure of income satisfaction, combined with the actual situation in Liaoning province, a household income satisfaction measure scale in Liaoning province were designed, and then a household income satisfaction measure model in Liaoning province was built. Through the use of factor analysis, four factors that affected the satisfaction degree of family income in Liaoning province were extracted. They were self value realization factor, family expenses factor, family income factor and social environment factor. The results show that residents in Liaoning province were dissatisfied with the level of household income.

Thirty indexes were chose from company profits quality. The nine factors were extracted by factor analysis method. Then the finance performance of the medicine listed industry was evaluated in China by cluster analysis. The results show that the enterprise asset utilization ability, main business profitability and the ability to collect cash were weak.

In this work, the algae rich extract and probiotics ice cream is prepared using the soybean meal extract as the nutrients, and the fermentation liquor that containing the viable bifidobacterium as the additive. The optimal fermentation conditions and the optimal composition of the stabilizers and additives for algae juice are studied. The results indicate the optimal fermentation condition is with the mass fraction of fermentation algae juice is 60%, the mass fraction of bifidobacterium fermentation broth is 5%, fermentation temperature 37 ℃, fermentation time 12 h.The stabilizer of algae juice:the mass fraction of pectin is 0.15%,the mass fraction of propylene glycol alginate is 0.10%,the mass fraction of xanthan gum is 0.10%,the mass fraction of monasodium orthophosphate is 0.05%.The additives of algae juice:the mass fraction of fruit essence is 2%,the mass fraction of bee honey is 6%,the mass fraction of granulated sugar is 6%.This prepared product is a natural health food, which complies with the food healthy standard.

With increasingly intensified competition in the education and training industry, how to exist in the competition for new training enterprises has become a problem which they should face. During the period of education and training industry entrepreneurship, the important management elements were provided. The education training industry took Ordos for example, through the research and visit to the local education training institutions, the relative data were concluded and analyzed, and the key factors on the influencing local education training were drawn in the success of the business enterprise. And the countermeasures and suggestions in concrete implementation process were proposed.

Using the threedimensional software ANSYS WorkBench for nonbeam pumping unit for dynamic analysis, the threedimensional finite element model of the pumping unit rack was established. To ensure that the system could be fully reflected in the dynamic analysis of the characteristics of its own force , firstly , the software prestress modal frame was used to analysis the pumping units static characteristic, and then the module was used on the rack's modal analysis, the rack's front nine natural frequencies and mode shapes were obtained. The results showed the Prestress had a little influence to the intrinsic characteristics of rack, and it could be neglected, and the rack structure affected the overall stability of the rack|through the analysis, changing the form and structure of the rack scantlings could improve the system's stability. Thereby the life of the rack was enhanced.

The ferrocene shows definite aromatic and redox properties, which can used as a switch model substance. In alcohol solution of lithium perchlorate, the redox reaction process of ferrocene is quasi-reversible, in which the electron transfer number determined is 1, and the diffusion coefficients of ferrocene ion (Fc+) and Fc are 2.24×10-3 cm2/s and 4.34×10-3 cm2/s, i.e. the diffusion velocity of Fc+ is faster than Fc. The standard rate constant tested is 2.79 cm/s.

The electrochemical behaviors of acetylferrocene at a disk electrode in 0.2mol/L LiClO4 solution had been determined by using cyclic voltammetry. Two methods were used to determine the diffusion coefficient of acetylferrocene, in which the rotating disk electrode was motionless and rotational respectively. Electrochemistry experimental results show that the electrochemical process of acetylferrocene at the rotating disk electrode belongs to reversible redox reaction which was controlled by the diffusion. The peak-peak potential ΔEp and the number of transfer electron n were 56.5 mV and 1 respectively. The diffusion coefficient of AFc and AFc+ were 4.74×10-5 cm2/s and 4.47×10-5 cm2/s determined by the currentvoltage curve in static disk electrode. And the diffusion coefficient of AFc and AFc+ were 5.20×10-5 cm2/s and 5.07×10-5 cm2/s according to the relationship of the peak current and the scan rate in rotating disk electrode, which was little faster than that of in static disk electrode. Rate constants of reduction process and oxidation process were 7.17×10-3 cm2/s and 8.31×10-3 cm2/s, respectively.

Through 3d ANSYS software, the belt pumping unit 3d model was established, the belt pumping unit structure was analyzed. Got the support maximum stress and displacement distribution maps, got some conclusion by analyzing the results. Based on this for the pumping unit for structure optimization design, three kinds of improved models was put forward, though the three kinds of models analysis, got the three models of the displacement and stress distribution maps. The results show that even the oil pumping unit design meet the requirements, it also can proceed the further optimization, changing the stress smaller angle stress model and raking prop, strengthen the main force position, not only greatly improve the stress state, but also make the structure more reasonable, economy applicable. 

In small current grounding system, determining singlephase grounding fault lines is quick a key question for realizing protection of power distribution net. Studies at the paper as follows was outspreads: a method of malfunction lineselection using the size and direction of zero sequence full current was advanced in neutral point indirect grounding system on the base of studying malfunction lineselection methods. Besides, a new method of lineselection using zero sequence transient electric charges for identifying singlephase grounding fault was put forward. This method is suit for neutral point to the ground via arcsuppression coil system. Computer simulation results indicate that the method has the merit of high lineselection accuracy rate and is propitious to implement microcomputer lineselection devices.

Often involving the problem of the flow in different angle elbow pipe on the process of water film lubricated transport of super heavy oil, the flow fielde is more complex in elbow tube than in straight one due to the effects of bend curvature. There is speed of deflection and pressure distortion in its flow field, which not only causes loss of energy, but also hase an influence on the stability of water film. CFD software was used to do numerical simulation based on the water film though different conditions of 45° elbow and 90° elbow, after analysis to determine 90° elbow should be selected to increase the line height under this condition. The study provide a guidance to the actual operation and can optimize operating parameters by CFD simulation software.

The spatial filter measurement principle of flow velocity was obtained by point charge mathematical model of the electrostatic sensor inserted, and signal cut-off frequency was acquired with “3dB” principle during real-time measuring flow velocity. Experiments prove that the spatial filter measurement velocity principle of inducement probe is feasible, and a set of experiment equipment was made-up to measure the solid phase velocity of gas-solid two phase flow, with which the spatial filter velocity may be measured in range of 25 m/s. The measured spatial filter velocity was calibrated by the correlation velocity of ring electrostatic sensor. It may be obtained from the measurement results that the deduced velocity measurement model of spatial filter method may complete measuring solid phase velocity in wider range.

LaF3 coated LiNi1/3Co1/3Mn1/3O2 cathode material was prepared by coprecipitation method. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The XRD data of the product show that they are single phases and retain the layered LiNi1/3Co1/3Mn1/3O2 structure. The synthesized the photocatalytic activity of 0.59% LaF3 coated LiNi1/3Co1/3Mn1/3O2 exhibits a good overcharge tolerance property with initial discharge specific capacity of 172.7 mAh/g and the discharge specific capacity of 163.5 mAh/g after 50 cycles in the voltage range 2.75~4.50 V at a constant current density of 0.3 mA/cm2.

Crude oil from Oilfield mined containing certain amount of water, so it need to be done oil - water separation that its moisture content reach requirements and will be on the market. Due to other methods having some shortcomings, physical separation is widely used. Spiral pipe separator has the character of simpler structure and lighter weight, becoming one of the most common centrifugal separation methods. Adapting computational fluid dynamics of VOF model, using the simulation software, oil - water separation of different inlet velocity in spiral pipe was simulated, and the oil - water separation rule was obtained. The farther from the axis, the speed is smaller and the lesser velocity the evener distribution. The most regional of water and phase distribution appeared in each lap nearly entry outside. Oil - water separation is in a cyclical along with the axial. It supplies spiral pipe separation and improvement provides with a theoretical.

The main carriers of national innovation capacity are the provinces which gather the technological, economic, and cultural, and the strength of provincial innovation capacity indicates the strength of the national innovation capability. So the key to the improvement of the national innovation capacity is to enhance the innovation capacity of each province. Using the statistical software SPSS Statistics, the statistics with principal component analysis method was analyzed, and also the innovation capability for our countrys on 31 provinces and municipalities was analyzed and sorted. According to evaluate results, the policy recommendations related to provide better ideas for economic development of each province was put forwarded.

The treatment of concentrated wastewater produced in the oil field was studied via self-made oily-water segregator. This laboratory apparatus comprises corrugated plate with pressurized dissolved-air flotation technology. The effects of the oil concentration of wastewater and influent flow on the removal efficiency of oil were mainly investigated. When the temperature is 50 ℃, influent flow rate is 70 L/h, the coalescence plate is coated by the galvanized paint, the removal efficiency of oil is up to 86.4%.

Dealing with oily wastewater by polymer material, the absorbance change before and after treatment with UV spectrophotometry was determined to calculate the oil removing rate. Some factors on the rate of removing oil including the type of polymer material, operation temperature, working time and the amounts of polymer material were investigated, and the experimental results show that the rate of removing oil can reach more than 60% when the polyvinyl chloride is used as the agglomerating material, the temperature of water is 60 ℃, the mass ratio of agglutinating [KG*3]material's[KG*3] to [KG*3]waste[KG*3] water[KG*3] is [KG*3]0.6 g/mL, the working time is 10 min.

An imidazoline corrosion inhibitor was synthesized from diethylenetriamine and oleic acid using dimethylbenzene as a water carrying agent, and the synthetic reaction conditions, molecular structure and corrosion inhibiting capability to boiler water system were studied. Results show that the optimized parameters for the synthesis is as follows: the molar ratio of oleic acid to diethylenetriamine is 1∶1.4, the volume ratio of dimethylbenzene to reacting mixture is 1∶5 , temperature is programmed raised from 145 ℃ to 210 ℃, the reflux time is 8 h. under the optimum conditions, the yield is up to 96.5%, corrosion inhibition efficiencies on carbon steel is over 90% with imidazoline derivative concentration of 20 mg/L in boiler solutions．The imidazoline derivative was found to inhibit anode corrosion reactions greatly, and also to inhibit cathode corrosion to some extent, so it can be classified as a passivating anodic-type corrosion inhibitor. The mechanism of corrosion inhibition relies on the strong absorption of the imizadoline on metal surfaces which can prevent metal surface from contacting with water．

It is necessary to calculate natural gas thermophysical property parameters in the water power and thermodynamic calculation of pipelines. The method of solving each physical property parameter of natural gas and solving process were introduced in detail. The compression factor of nitrogen gas was obtained by using Van der Waals equation, RKS equation, P-R equation and BWRS equation respectively. It is concluded from the comparison of the experiment data that as a two-parameter cubic equation, the P-R has more accuracy than that of the Van der Waals and the RKS equation, but slightly lower accuracy than that of BWRS equation. But P-R equation has less number of parameters and is easier to compute and determine parameters. Therefore, the P-R equation gets an extensive application in the area of thermophysical property calculation.