Linbei area was located in the middle of the central uplift zone of Huimin depression. Aiming at the problems of unclear reservoir type, trap scale and reservoir validity of the Jishan sand body in this area, starting from hydrocarbon source conditions, reservoir physical properties, distribution of sedimentary facies and structural features, through the data of drilling and oil testing results, comprehensive application of geological, geochemical analysis and geophysical research means, in depth analysis of hydrocarbon accumulation conditions and main control factors. The results show that: the high⁃quality source rock in the third member of Shahejie formation is the main source of Linbeijishan sand body, and the good configuration of sand bodies in different periods in time and space is the basis for the formation of hydrocarbon accumulation; the relationships between the developed faults and the pathway system of framework sand body in the area provides a good migration channel for oil and gas, which results in the zonal distribution of oil and gas reservoirs along the North⁃South fault steps; The mudstone in the upper part of the third member of Shahejie formation and the thick mudstone at the top of the Jishan sand body are stable, The sand body of each stage are separated by mudstone and pinched out from the east to the west, the high salinity primary CaCl2 water type with good sealing property developed in the third member of Shahejie formation and the lateral sealing of some faults act together to provided good preservation conditions for oil and gas reservoirs.

The volume of fluid (VOF) model which was a multiphase flow model in ANSYS Fluent software was used to simulate the shellside boiling of helical coil heat exchanger (HCHE), the time relaxation parameter which dominated mass transfer was studied by equivalentevaporating method, and the value of time relaxation parameter was recommended as 3 s ^-1 for ethane and propane. The value of time relaxation parameter was also verified by heat transfer deviation. The equivalentevaporating method which was proposed could be used in all kinds of boiling simulations, and had good application value for mass transfer calculation.

        Tooth-locked quick-opening pressure vessel is widely used. The fast opening structure was an important part of the pressure vessel door opening and closing operation and the meshing degree of the tooth determined the safe of the container's operation. A tooth-meshing autoclave was taken as an example and the finite element analysis was used as a method to carry on the numerical simulation to its meshing tooth in load condition and the strength check to its dangerous path. In the case of the incomplete meshing in the circumferential direction, the incomplete meshing in the radial direction and the combined operation in which the two directions were not fully meshed. According to the analysis results, it could be seen that with the decrease of meshing tooth circumferential or radial meshing degree, the stress increased. Under the dangerous working condition of combined meshing (i.e.circumferential meshing degree was 80%, radial dislocation was 3.0 mm)，the tooth's stress reached the maximum. After the strength check, the primary local membrane stress exceeded the allowable value, so the stress didn't meet the requirements. According to the analysis results, the quick-opening container should be avoided to working with incomplete meshing tooth to ensure the safe use.

        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.

A kind of imidazolinyl quaternary ammonium salt was synthesized with oleic acid, tetraethylenepentamine and benzyl chloride. Then it was transformed into high watersoluble corrosion inhibitor by reaction with organic acid. Some factors, such as the mole ratio of raw materials, reaction time and reaction temperature affecting the anticorrosive capacity of the inhibitor were discussed. As a result, the optimum synthesis conditions is listed below: the molar ratio of organic acid to imidazolinylquaternary ammonium salt 1.1, reaction time 3 h and reaction temperature 150 ℃. The imidazolinebased corrosion inhibitor synthesized under these conditions has better watersolubility, and the corrosion inhibition efficiency to carbon steel is above 85% in the mass of hydrochloric acid aqueous solution is 15% at 90 ℃.

In order to determine the basic causes of major accidents which may occur in the reforming unit, and take the countermeasures of safety, this paper used the risk degree assessment method for safety assessment about the reforming unit. Hidden danger of the unit was found by the analysis of risk, and intrinsic risk grades of the equipment units was divided by the risk assessment table. Results show that the unit has very high intrinsic risk grade, in which the existence of a large number of hazardous substances, most equipments because of the high temperature and pressure, corrosion and other factors can easily lead to the leakage of medium, so as to cause fire and explosion. According to the results of the assessment, propose the corresponding safety measures to prevent accidents, ensure the production running smoothly.

Two methods including furfural refining and dual-solvent (2-Propanol and furfural) refining were investigated respectively in recycling the used industrial lubricating oil. The results show that the performance of dual-solvent refining is better than furfural refining. The optimum process condition is as follows: refining temperature 75 ℃, volume ratio of solvent 2-Propanol to furfural 1∶1, volume ratio of solvent to oil ratio 1.5∶1. Under these optimum conditions, the physical properties[KG*2]of[KG*2]recycled[KG*2]oil is[KG*2]listed[KG*2]as[KG*2]follows:[KG*2]viscosity[KG*2]index[KG*2]119.5,[KG*2]refractive[KG*3]index[KG*3]1.476[KG*3]6,[KG*3]Color[KG*3]1.0,[KG*3]freezing[KG*3]point -15.8 ℃, flash point 218.4 ℃ , sulfur content 0.026%, the total oil yield 72.5%.

In internet times, it is an important challenge that how to make more personalized services for user, increase the attraction of the goods, and get greater benefits for company. Through studying the natural immune and the artificial immune theories, it described the idea of using the artificial immune technique in e-commerce personal recommendation, and gave the explaining method for recommender technique and its problems with the shape-space model. The clustering immune network recommendation algorithm was given. Experimental result shows that the proposed algorithm can solve the recommender problem more highly and efficiently, and has the advantage of good application value.

The refining of vehicle waste lubricant oil using the furfural as the main solvent and sodium dodecyl benzene sulfonate as the cosolvent were studied. The influence of mixed solvent ratio, extraction temperature and other factors on the yield and quality of recovery refined oil are also investigated. It turns out that when the temperature is 80 ℃, the catalyst oil ratio is 1.5, the additive precentage of sodium dodecyl benzene sulfonate is 0.025%, the properties of refined oil with high yield[KG*3](91.26%)[KG*3]is[KG*3]listed[KG*3]as follows: the viscosity index is 116.83, the refractometer index on 25 ℃ is 1.441, the chromatic is 2.0, the condensation point -19 ℃, w(carbon residue) is 0.496%. The refined lubricated oil after adding some additive can meet the requirements of lubricant oil, and can be reused.

The embedded database is a new database technology. It was created along with the development of Web technology, business intelligent technology and mobile computing technology. The reason why data mining system used embedded database was analyzed. Derby database was made into a separate Eclipse plug-in unit and the unit was applied to data mining system in order to meet the specific needs. The application of embedded database used in data mining system not only addresses the data management issues, but also ensures the portability of the system.

 

The application of data mining in CRM (Customer Relationship Management) is a hot spot in recent years. CRM refers to the enterprise's approach to understand and influence customer behavior through meaningful communications in order to improve customer acquisition, customer retention, customer loyalty, and customer profitability. Adopting different services to different customers is based on the accumulation of vast amounts of data by the enterprise. The effective way to get the knowledge from these data is the technology of DM (Data Mining), which will provide basis for leader's decision-making, and achieve the objectives of CRM. The basic theory of the customer relationship management and data mining technology, and the application of DM in petrochemical enterprise CRM were discussed.

The steam dryness is an important quality parameter of steam. The dryness of wet steam included in high-pressured and high temperature wet steam injected into the oil layers has the important influence to the extraction efficiency. In order to realize high quality control of steam dryness in the stream-injection boiler, a computation method of steam dryness was proposed. Through this method, the steam dryness along the pipelines was firstly calculated, then vapor temperature and heat loss in the pipelines were obtained. Finally, steam dryness at the random place in the pipeline was solved. The change situation of the steam dryness in steam pipeline system was studied, which provides the reference for the heating mining system technological design.

In e-commerce times, it is important for an e-commerce website whether it can provide better personality and individuality services for customers. An adaptive recommend framework was presented and accuracy of recommendation was improved through combining some basic recommendation algorithms. Average method and grouping adjustment method were given to solve combination problems of these basic algorithms. The experiment shows that the two methods have well recommend results. The framework can avoid defects of single algorithm, and it is more suitable for recommend application of e-commerce.

On the basis of the browser/server application environment, uploading varied files and convenient management of upload files has become one of the problems of file management applications. The program of file upload without components was designed by using Java I/O flow. The operation of uploading files includes interfaces of submission, process and management of upload files. Upload files are able to be directly stored in the appointed catalog, and upload files can be managed through database. The implement principle of upload files using Java I/O flow and database management method were discussed. And detailed solutions and implement methods were given. 