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In this paper, the mechanism of radio frequency (RF) causing fire and explosion directly and indirectly was recommended, studies of RF risks in flammable and explosive environments were summarized, some problems in RF risk researches recently were discussed, study prospects of RF risks in flammable and explosive environments were analyzed. The fact that the mechanisms and conditions of RF igniting combustible gases should be researched by more deeply theories and technological means, and that RF security standards should be laid down and a complete and precise RF security assessment system should be established in flammable and explosive environments was put forward.

Spherical and fine cobalt powders were prepared by thermal decomposition of cobalt oxalate precipitated in the presence of pulsed electromagnetic field (PEMF). The morphology and phase structure were characterized by scanning electron microscopy (SEM), atomic force microscope (AFM) and X-ray powder diffraction (XRD). The aspect ratio was calculated by image tool software and the average size of cobalt particles was measured by laser particle size analyzer. The results indicate that both products prepared from cobalt oxalate with or without PEMF give rise to the formation of β-Co. The morphology of both products is similar to that of the precursors. The presence of PEMF plays an important role in formation of spherical and fine cobalt particles.

The spindle or spherical cobalt oxalate powders were prepared by conventional precipitation in the presence of pulsed electromagnetic field (PEMF). The morphology and phase structure were characterized by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). The aspect ratio and surface fractal dimension of cobalt oxalate aggregate were calculated using Image tool software and Differential Box Counting (DBC) algorithm. The results indicate that the products prepared from ammonium oxalate and cobalt chloride give rise to the formation of β-CoC2O4∙2H2O. With the increase of pulsed time, the morphology of cobalt oxalate sample varies periodically from rod-like to spheroidic. For the sample treated for 60 s, the degree of sphericity is the highest. The surface fractal dimension is 2.096 and the corresponding fractal form is tight type.

This study proposed an innovative design of pressuresensing pacifier to solve the problem of lack of sucking ability of newborninfants or premature infants, as well as the problem of caregivers lacking inthe knowledge of when to feed the infants. TRIZ was adopted as the researchmethod. The modification and deterioration parameters of contradiction matrixwere used to identify the invention principles for systematic innovationdesign. Moreover, the seven techniques of the universal design were used toapply the proposed pressure sensing pacifier on infants. The pressure of thepressure sensing pacifier was in the range from -50 to -75mmHg. Bymodifications of these data, the infants are allowed to receive better care.This study also designed a set of pressure sensing device for clinical medicalpersonnel and researchers to measure the sucking ability of premature infants.The objective assessment tool is expected to help medical personnel to masterthe development stage of the sucking ability of premature infants to identifythe best feeding opportunity.

Thisresearch pertains to an innovative design for an intelligent percussion device, which solves the problem of the lack of control overthe strength of the percussion force and the tapping frequency. A TRIZ methodis used in this research. Improving and worsening the parameters of thecontradiction matrix aid in finding available inventive principles andimplementing a systematic innovative design. The pressure sensor of theintelligent percussion device detects the force and the frequency, and adisplay device shows data on the force and frequency. A comparison database anda warning device achieve the function of remedy, so the percussion effect canbe promoted, resulting in a superior percussion-auxiliary device. The presentinvention is safe, accurate and convenient and can be applied to patients inhospital or to home care patients with sputum retention in the lungs andstudents who are learning the percussion skill, so the market demand is quitelarge.

The detection of formaldehyde is very necessary and important in both industrial and residential environments. In this paper, a novel quartz crystal microbalances (QCM) formaldehyde gas sensor has been successful fabricated based on Polyethylenimine (PEI)-multi-walled carbon nanotubes (MWCNTs) composite films by the spraying process. The morphology of films was analyzed by scanning electron microscope (SEM), and formaldehyde-sensing properties of sensors were investigated. The results showed that the prepared QCM gas sensor exhibited good response and recovery behaviors towards formaldehyde gas in the concentration range of 0-10 ppm at room temperature, which also has the superior repeatability and selectivity. Moreover, the gas-sensing mechanism of sensors was studied.

Random-dot stereograms were used as stimuli to investigate the perception of stereopsis in fovea field. The response of every subject was recorded in different positions in the fovea field: upper, lower, left, right field and with different eccentricities of 1.39º, 1.93º, 2.48º, 3.02º, 3.57º. The results showed that reaction times increased with increasing eccentricities wherever the disparity zone was presented relative to the fixation point. No significant differences were found between reaction times to the upper and lower visual fields. And there were no significant differences between left and right visual field. But there were marked superiorities for reaction times between upper and right field at all eccentricities.

This paper presents the basic principle of gas leak ultrasonic produce, the use of ultrasonic transducer array collecting leak ultrasonic signal, the signal filtering and power spectrum estimation of signal processing algorithms, intelligent gas leak detection system is developed. The detector is convenient to use, can realize quick check gas leak, application of virtual instrument for leakage signal analysis and processing, implementation of gas leak detection and estimation of leakage.

In this paper, the graphene-polyaniline (PANI) nanocomposite thin film was prepared by the in situ self-assembly method for the ammonia (NH3) gas sensor application, which was characterized by scanning electron microscopy (SEM) and UV-vis spectroscopy. The NH3 sensing performance and mechanism of the nanocomposite film were investigated. The results revealed that the sensor based on graphene-polyaniline nanocomposite film exhibited better sensing properties and restorability than those of single graphene film.

Polyaniline (PANI) nano-thin films were deposited on a novel microstructure silicon (MSS) substrate via in-situ self-assembly approach for NH3gas-sensing. The MSS was prepared by alkaline etching process, and gold interdigital electrodes were formed on the MSS surface by vacuum evaporation. The characterization of the MSS and PANI nanothin film were investigated by scanning electron microscope (SEM) and UV-Vis absorption spectroscopy. SEM images showed that the MSS exhibited an orderly uniform hemisphere array structure, and the MSS surface was covered by a compact PANI thin film which consists of PANI nanoparticles and PANI nanofibers. The gas-sensing properties of the sensor were examined at room temperature. The results revealed that the sensor exhibited a good response and recovery characteristics to NH3.

The RO concentrate containing non-degradation organic pollutants was treated by electro-Fenton process. The high voltage pulse generator was used as discharge power. The effects of pulsed electric field parameters, aeration rate and pH on COD removal rate was investigated. The results indicate that the COD removal rate is up to 80.71% when pulsed voltage, pulsed frequency, treatment time, aeration rate and pH are 30000 V, 5 Hz, 240 s, 1.0 m3/h and 10, respectively.

Knowledge has been regarded as an important resource for firms to compete in todays competitive environment. Since knowledge and knowledge management are so important for achieving business performance, the knowledge strategies are likely to be a critical issue of strategic choice for the firm. Evidences showed that the implementation of KM strategy can cultivate organizational dynamic capabilities to improve knowledge quality and quantity, as well as for consolidating the value and practicability of knowledge. Thus, this study tries to examine the impact of KM strategy on knowledge management performance as well as business performance. According to the empirical data collected from manufacturing industry in Taiwan, meaningful findings and conclusions will be proposed and discussed.

In this paper, Polyepichlorohyron(PECH)/multi-wall carbon nanotubes(MWCNTs) composite films and PECH/multi-wall carbon nanotubes twolayer film were deposited on interdigitated electrodes by airbrush technology to detect ethanol vapor of various concentrations at room temperature. Thickness and structure of the film were taken into account, so films of different thicknesses and with different structures were prepared respectively. The responses of the sensors to ethanol showed that composite film had a higher response thantwolayer film, and the thick composite film performed better than its counterpart when they were exposed to ethanol vapor.

How to build a data warehouse and data mining is constantly worth exploring and optimization, not only technically, in commercial applications as well. This article discusses the introduction of new technologies and concepts, the traditional method of data warehouse technology has changed dramatically, based on data warehouse applications are a new development. Each enterprise data warehouse based on the characteristics of different companies, you can use a very flexible method of selection and design selection, implementation. According to some relatively new technical features, talk about data warehousing and data mining architecture.

To investigate the effect and the mechanism of compound injection of Shenqi (Codonopsis and Astragalus) on Docetaxel resistance of human lung adenocarcinoma cell A549/ DTX. The cytotoxicities of Shenqi Injection were assayed with the MTT method, the effects of Shenqi Injection on apoptosis induced by Docetaxel in A549/ DTX was examined by flow cytometry (FCM). The expression levels of apoptosis regulator Bc1-2 and Bax were detected by Western blot. After treatment with Shenqi Injection for 24 hours, results showed that 15 μL / mL Shenqi Injection significantly increased toxicity of Docetaxel on A549/DTX. Shenqi Injection could reverse the Docetaxel resistance in A549/ DTX in vitro. The drug resistance reversal index (RI) was equal to 2.71 analyzed with MTT method. Shenqi Injection could enhance the apoptosis effect of Docetaxel on A549/DTX. We conclude that Shenqi Injection can reverse the drug resistance on A549/DTX, and its mechanism is to promote apoptosis may be related with the up-regulation of Bc1-2 expression and down-regulation of Bax expression.

In this paper, the research based on decision tree-based methods can be customized to achieve a common data analysis system for animal husbandry intelligent decision support, conducted the following study: First, detail the current data mining techniques and animal husbandry areas where the decision tree method for various applications, purpose, content and methods. Secondly, the theoretical basis of the data mining system, basic theory and the theory of decision tree methods of animal husbandry intelligent decision system, which constitute the theoretical basis of the study. Third, given the detailed design of common animal husbandry intelligent decision system based decision tree method. Detailed descript of the specific work processes and systems function modules of the system on the line division. To complete the design of the database based on the completion of the system design.

Using torque telemetry system to test the mechanical drive system of rolling mill,it is found that the torsional vibration and current signal in the electric drive system have the same obviously vibration frequency. The model of cycloconverter, synchronous motor and mechanical drive system of rolling mill are built and analysed by Matlab/Simulink and ANSYS.The simulation results show when the harmonic torque frequency and the torsional vibration natural frequency of for mechanical drive system are equal or close, the strong torsional vibration arouse It is proved that the convertor output current harmonics can induce the electromechanical coupling vibration of main mechanical drive system under the certain conditions.

A high selectivity patterning technology of vanadium oxide (VOx) thin film was suggested in this paper. VOxthin film was etched through a photoresist (PR) mask using Cl/N based gases in a reactive ion etching (RIE) system. Taguchi method was used for process design to identify factors that influence the patterning and find optimum process parameters. Experimental results suggested that RF power was the largest contribution factor for VOxetch rate, PR selectivity and uniformity on 6 inch diameter wafer. Uniformity and PR selectivity were improved by introducing a small amount of N2. High resolution and low roughness patterning transfer was achieved with a non uniformity of 2.4 %, an VOxetch rate of 74 nm/min, a PR selectivity of 0.96, a Si3N4selectivity of 5 and a SiO2selectivity of 10.

Formaldehyde, a colorless and pungent-smelling gas, had been confirmed be a huge threat to people health. The detection of formaldehyde was necessary and important at room temperature. Sprayed P3HT/InSnO composite film based on organic thin film transistors (OTFT) was fabricated to detect formaldehyde at room temperature in this paper. The results showed that P3HT/ InSnO-OTFT showed better response and recovery to HCHO compared with P3HT-OTFT at room temperature.

Contamination control and remediation of groundwater is one of the hotness points in environmental protection field. Groundwater contamination numerical simulation is widely used for groundwater contamination transportation. In this paper, we constructed an indoor sandbox to conduct hydraulic control experiment and tracer experiment. We also set up groundwater flow model and solute transport model by computer and chose the model's key parameters for sensitivity analysis. The results indicated that the sensitivity of hydraulic conductivity was highest, which was the key parameter in the groundwater flow model. The sensitivity analysis of solute transport model parameters showed that sensitivity from large to small was: longitudinal dispersion, porosity and hydraulic conductivity. This study can obtain the main parameters in groundwater simulation model and is helpful for the construction of groundwater contamination migration model.

Recovery of sulfur source is an important goal of industrialization regeneration for hot coal gas desulfurization sorbent. The different sulfide forms of sulfur produced in regeneration atmosphere and the method for recovering of sulfur source are discussed in this paper. The regeneration exhausted gas of high temperature desulfurization sorbent mainly has several forms of sulfides: sulfur dioxide, hydrosulfide and elemental sulfur, sulfide form and regeneration atmosphere have a direct relationship. Recovering sulfur dioxide utilize the reduction of CO or ammonia, and recovering hydrosulfide use selective catalytic oxidation which is the desulfurization method for achieve prospects of industrialization, but there is catalyst poisoning in these methods. We point out that the direct recovery of elemental sulfur from different forms of sulfide will be the focus of future research.

Jining city is one of the key coal national development base.The width of land subsidence area , the depth of collapse and the difficulty of its government are all rare in the nationwide. This paper analyzed the coal mining subsided land and village relocation situation in Jining city , summarized the situation of the coal mining subsided area comprehensive governance and the coal under villages relocation and pointed out the difficulties and contradictions of these two efforts.And it also proposed that establishing a sound reduction loss mechanism of cultivated land protection, and adjusting and perfecting the land policy of coal under villages relocation are the keys to solve the above problems.

The low density polyethylene (LDPE)/ethylene-octene copolymer (POE) blend films and LDPE/POE/inorganic particle composite films were prepared. By means of DSC method, the crystallization capability and the non-isothermal crystallization kinetics of LDPE composite films were investigated, the results show that the addition of DE can reduce the interfacial free energy of the crystal and the active energy of a nucleus, resulting in stable nuclei can be formed at lower supercooling, which makes the polymer crystallized successfully at high temperatures. By selecting data processing method of Mo ZS and modified Jeziorny, the results indicate that the DE play a role of heterogeneous nucleation agent in the process of crystallization and increased the crystalline rate of LDPE.

It is necessary to establish the rule base before intrusion detection. An adaptive method based on genetic algorithms was presented for learning the intrusion detection rules in order to realize the automation of attack rule generation. The genetic algorithm is employed to derive a set of classification rules from network audit data, and the support-confidence framework is utilized as fitness function to judge the quality of each rule. The generated rules are then used to detect or classify network intrusions in a real-time environment.

in this paper, a typical freight business as the demand for logistics management platform prototype platform for logistics management platform designed and constructed is discussed. The logistics industry, according to the characteristics of the wholesale business model design, describes the order of picking the railway transport program characteristics of the optimal solution, combining the best features of the program picking order processing algorithm design. By systematic analysis determine system development program, and the development of logistics management platform, the combination of theory and practice.

Bamboo vinegar and sulfuric acid are used as acidifier and the method of precipitation is adopted to synthesize the antibacterial white carbon black. Orthogonal experiment was carried out to investigate the influence of reaction temperature, the amount of bamboo vinegar, additive amount of polyethylene glycol, the concentration of sodium silicate and amount of priming water on the oil absorption value of white carbon black. The analysis of orthogonal experimental results shows that influence of temperature, amount of priming water and the additive amount of PEG on oil absorption value is extremely remarkable. The influence of the amount of bamboo vinegar is remarkable, but the concentration of sodium silicate is indistinctive. It is verified through experiments that the specific surface area and oil absorption value of product is high, and its antibacterial effect is good.

To overcome the limitation of precocity and stagnation in classical ant colony algorithm, this article presents a Parallel Ant System Based on OpenMP. The ant colony is divided into three children ant colonies according to the characteristics of natural ant colony multi-group and pheromone updating features of ant colony algorithm. By Open Multi-Processing parallel programming idea, the parallel and cooperating optimization of children ant colonies was obtained. It organically combines local search and global search, makes full use of computing power of multi-core CPU, and improves the efficiency significantly. Contrastive experiments show that the algorithm has a better capability of global optimization than traditional ant colony algorithm.

The study constructs a stop schedule model for high-speed railway. A greedy-based algorithm is proposed and the problem is divided into 3 stages to decrease its difficulty to an acceptable extent. Some greedy principles are applied and series of optimal models are constructed to solve the problem. The result of the sample shows that the models and algorithms in the study are effective.

In this paper, the numerical model of multi-stage liquid column scrubber was established. The flow field of liquid column scrubber with different inlet structure was respectively simulated by a commercial CFD code, Fluent. Considering the distribution characteristics of static pressure and velocity in the scrubber, this inlet type, single horizontal gas inlet with a notch at the bottom, is regarded as the most reasonable structure. On one hand, that structure has uniform distribution of static pressure. On the other hand, the velocity profile of its field presents saddle shape, i.e. the low central velocity exists between two peaks, which could contribute to weakening wall-flow phenomenon and obtaining uniform gas-liquid distribution.

After used technology of the ASP flooding in the fourth plant of Daqing oilfield, the problem of scaling becomes serious in oil wells. The scale samples do not dissolve to acid or alkali, and it difficult to be treated with regular method, so it has influenced the normal proceeding of well production. For solving this phenomenon, the displacement experiment was proceeded to simulate the site actual oil production conditions by using the high pressure physical simulation tests. By measurement of variation law of permeability in the process of ASP flooding and pH value in produced liquid along with time, the paper predicted the starting time and duration of scaling during oil well production. And rationality of the prediction results was verified by using the local test results. Finally the prediction formulas of scaling time which the oil wells with different spacing in ASP flooding were summarized.

Based on the land use and land cover changes from 1995 to 2010, the relationship of land use and carbon emissions was estimated, using existing calculate model Change of land use-carbon emissions. The carbon emissions caused by farmland, forest, garden plot, and construction land were estimated, furthermore, the influence of carbon emission was revealed. Finally, the problems that facing G.D. province in the view of carbon reduction was analyzed, and several suggestions was brought out.

To provide scientific data of the chloroplast TrnL-F sequences for the authentication of Pulsatilla chinesis (Bge) Regel, we extracted the genome DNA from the leaves of Pulsatilla koreana Nakai. and Potetilla chinesis Ser. collected in Jilin Province, amplified the chloroplast TrnL-F region using universal primers and sequenced the purified PCR products directly. The obtained sequences were edited by Genetyx and reported here.

The sediments in all kinds of containers in oily field ground processing system were called tank bottom oily sludge. In this paper, the characteristics of sludge were studied. The colloid and asphaltene can increase strength of the oily-water emulsion film which can lead to seriously oily emulsion. In view of this, the process of conditioning-ultrasonic demulsification-centrifugal separation treating tank bottom oily sludge was designed by studying the sludges physical and chemical characteristics. The process parameters were selected. The conditioning were that the dose of detergent was 600 ~ 800 mg/L; The ultrasound processing was that the temperature was 60°C, the ultrasound power was 12Kw and the running time was 25min; The centrifugal separation was that the temperature was 60°C, the dosing flocculant was 600mg/L and centrifuge rotating was 2200r/min. The oily containing in the sludge of centrifugal exports was less than 2% by using this process at the optimal parameters.

The supply of construction land index is difficult in coal villages migration, especially the construction land index in urban and rural, lacking of construction land index becomes the bottleneck of village migration. In order to ruduce the pressure of the contradiction between supply and demand of land used for construction purposes. This paper combines with the actual situation of coal villages, taking Huainan as an example, starting from the connotation and significance of the policy of linking the increase in land used for urban construction with the decrease in land used for rural construction, based on the analysis of the current situation of the city construction land use, making predictions on the potentiality of village land readjustment in coal mining areas, the potentiality of the rural residential areas hook readjustment and the potentiality of linking the increase in land used for urban construction with the decrease in land used for rural construction, the results show that the overall hook potentiality is larger.

To provide scientific data of the internal transcribed spacer (ITS) sequences for the authentication of Pulsatilla chinesis (Bge) Regel, we extracted the genome DNA from the leaves of Pulsatilla koreana Nakai. and Potetilla chinesis Ser. collected in Jilin Province, amplified the ITS region using ITS universal primers of angiosperm, and sequenced the purified PCR products directly. Polymorphism of ITS sequences was found within P. chinensis Ser. and the sequence data suggested that our samples of this species might be related to hybridization. The obtained sequences were edited by Genetyx and reported here.

A mercury chloride sensitive Bacillus sp. X4 as a toxicity recognition element was isolated from soil. A novel microbial biosensor was developed based on the isolated X4 in combination with a dissolved oxygen electrode for the analysis of toxicity in wastewater. Optimal response of the biosensor was obtained at pH 7.0 - 7.5 and 30 - 35 °C with a detection linearity over the range 0.10 - 1.97 mg·L-1 of HgCl2. The repeatability of the sensor response were found to be 1.8%. Preliminary application of the biosensor in pharmacy wastewaters has demonstrated their effectiveness. Toxicity values produced with this biosensor for pharmacy wastewaters correlated well with those determined by standard method.

The bottom contact heterojunction organic thin film transistors (OTFTs) based on n-type hexadecafluorophthalocyaninatocopper (F16CuPc) and p-type copper phthalocyanine (CuPc) bilayer were developed by the vacuum evaporation, which were applied to detect nitrogen dioxide (NO2). The sensors with different thickness (5nm, 10nm, 15nm and 20nm) of CuPc were prepared to investigate the influence of CuPc film thickness on the properties of devices. The results showed that four parameters including the source-drain current (IDS), grid current (IGS), threshold voltage (VT) and carrier mobility (μ) changed in a few seconds when the sensors were exposed to the atmosphere of NO2. Further more, IDS and IGS presented extremely similar variation trend. So the grid current would be taken as a new parameter to reveal the response characteristic of OTFT gas sensor. By comparison, the device with 15nm CuPc thin film exhibited the optimum electronic and gas sensing properties.

Dimethylglyoxime (DMG) and N-hydroxyphthalimide (NHPI) were used to catalyze oxidation of toluene to benzoic acid with molecular oxygen under normal pressure in PEG 1000 -based functional dicationic acidic ionic liquid (PEG1000 -DAIL). PEG1000 –DAIL enhanced the efficient catalytic ability of NHPI: 89.82% conversion of toluene with 94.63% selectivity for benzoic acid could be obtained at 80°C in 10 h.

Headlights are the focal point of the car-front-face. The genetic characteristics and development trends of Camry headlights were summarized by comparing their organization structures and making analogy with eyes. From cultural perspective, the internal relations between headlights characteristics and the esthetical psychology featured "quietude、shadows、harmony“ were suggested.

A surfactant containing sulfonic group was used as pretreatment agent before polymer flooding. It can form a mixed absorption layer with the polar substances of rock surface. So the wettability of rock surface can be changed to some extent, and plugging near borehole zones which was caused by polymer injection can be decreased. Compared with the effects of different wettability reversal agents on the saturated static adsorption of polymer on rock surface, a wettability reversal agent with the best effect was selected to be used as pretreatment agent for anti-clogging in polymer flooding wells. Core displacement experiment showed that the pretreatment agent can prevent the polymer adsorbing on rock surface effectively, and the plugging rate and injection pressure of polymer flooding were reduced by more than 20% and 50% respectively.

Eco-environmental water demand of urban water system should be that of certain quality, which is necessary for it to develop its normal functions. The water system includes Dongchang Lake, Tuhai River and Old Canal in Liaocheng City, Shandong Province, China. The multiannual mean optimum, medium and minimum eco-environmental water demand of Dongchang Lake are respectively 2922.9×104m3, 2334.7×104m3 and 1746.4×104m3. Those of Tuhai River are respectively 4757.9×104m3, 2865.7×104m3 and 1919.7×104m3. Those of Old Canal are respectively 348.0×104m3, 277.9×104m3 and 207.9×104m3. Then those of the water system in Liaocheng City are respectively 8028.8×104m3, 5478.3×104m3 and 3874×104m3. These results can provide basis for protecting its eco-environment and promoting its sustainable usage.

In this study, quartz sand coated with water-treatment residuals was tested for its effectiveness as an arsenic adsorbent. The surface characteristics of the quartz sand before and after modification were analyzed. Different amounts of modified quartz sand were then tested for their adsorption capacity, using raw water with an arsenic concentration of 500 ppb. Analysis showed that the surface area and average pore diameter of the quartz sand had increased significantly after modification, as did the amounts of iron, manganese, and aluminum found as surface elements. Using both Freundlich and Langmuir isotherm models to measure the effectiveness of arsenic adsorption by the modified quartz sand, it was found that the latter model, for monolayer adsorption, was more appropriate.

Hemagglutination titer of crude lectin from four traditional chinese medicine was detected. Lectins from Radix Polygalae and Saxifraga stolonifera agglutinated red blood cells of rabbit, rat and chook potently. Heteropappus hispidus (Thunb.) Less lectin also agglutinated the three kinds of red blood cells, but hemagglutination titer was lower. Hemagglutination effect of Lepisorus waltonii (Ching) Ching lectin only appeared in rat red blood cells.

1-O-(p-hydroxyphenyl)-6-O-caffeoyl-β-D-glucoside (PPCG) was isolated in extraordinary high yield from the dried buds of Vaccinium dunalianum. The present study was aimed to investigate the effect of PPCG on platelet aggregation in animals. In in vitro tests, PPCG showed an inhibitory effect on ADP/PAF-induced platelet aggregation. PPCG significantly prolonged the mice bleeding and clotting time. PPCG (100 and 200 mg/kg) dose dependently reduced mortality of ADP-induced acute pulmonary thromboembolism mice to 80% and 70%, respectively, a high dose (200 mg/kg) of that can reduce serum TC and TG levels of the experimental hyperlipidemia animals, but cannot lower blood viscosity. The observations provide a scientific basis for traditional use of this plant for the treatment of articular rheumatism. Furthermore, these results also suggested that PPCG had anti-thromboembolic effects and good prospects for drug development of cardio-cerebral vascular diseases.

Fe-immobilized bentonite, prepared with bentonite and FeCl3 was used for the adsorption of uranium(VI) in this study, solution pH, ion strength, contact time and temperature were investigated, structural characterization of Fe-immobilized bentonite was assayed by X-ray Diffraction and Fourier Transform Infrared Spectroscopy. Results indicated that the adsorption capacity were strongly affected by the solution pH and ion strength, the adsorption efficiency was 91.8% when pH value was 6 and ion strength was 0.01 mol•L-1, higher or lower pH did not favor the U(VI) adsorption. The adsorption mechanism was discussed by the views of reactive kinetics and thermodynamics along with Scanning Electron Microscope. The adsorption kinetics process was fitted well with the second-order kinetic equation, when the initial U(VI) concentration was less than 38.08mg/L, Langmuir equations could describe the adsorption isotherm of U(VI) well with the maximum adsorption capacity of 169.5mg/g at 303K

Extending the Parikh’s method of quantum tunneling radiation, Hawking radiation via tunneling from the cosmological horizon of NUT-Kerr-Newman de Sitter black hole is deeply studied. The result shows that the tunneling rate on the cosmological horizon is related to the change of Bekenstein-Hawking entropy and the real spectrum is not strictly thermal at all, but is consistent with an underlying unitary theory.

As a key datum in the petrochemical industry, Water content ratio plays an important role in dehydration, storage selling and petroleum refining. According to the oil well production site, this thesis is based on the oil-water mixture’s density to calculate the water-rate in petroleum, carried on the error analysis to this measuring method, and assessed the scope which this metering equipment is suitable. The wellhead drop back pressure device is effective in monitoring oil wells, to achieve the single well production of display, and when the single well is not working properly, you can discover and resolve problems. The system features are simple structure, easy to carry, stability of Measurement and easy maintenance.

In this paper, the dynamic mathematical model about the asymmetric three-potential four-way valve control asymmetric hydraulic cylinder is established, and a hot rolling mill hydraulic screwdown system simulation model is constructed to research the dynamic characteristics by MATLAB/Simulink. It is obtained that the displacement output curve of the hydraulic cylinder by changing the rolling different strip thickness. Finally contrasting the input and output spectrum curve, it found that given the vibration signal by hydraulic system can transfer to the hydraulic cylinder. At the same time it indicate that the computer simulation is the effective way that research the dynamic characteristics of the hydraulic screwdown.

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.

Due to high in desulfurization activity, big in sulfur capacity and easy in regeneration, iron oxide desulfurization sorbents have been used to remove hydrogen sulfide derived from coal gas at normal temperature. At the same time the removing H2S from coal gas containing CO can generate COS, which is more difficult to removal than H2S. γ-FeOOH desulfurization sorbent was prepared by the fast oxidizing method. Kinetics study of COS formation in γ-FeOOH desulfurization was performed under 40-80°C，the CO+H2S+N2mixtures and over a residence time of 0.04~0.09s. LevenbergMarquardt and lsqcurvefit methods in MATLAB are used for the regression of experimental data. The established kinetics model of COS formation is described by the following: rCOS=8.9990*104exp(-22540/RT)PCOPH2S. The recognition of mechanism model reveals that Langmuir-Hinshelwood mechanism can perfectly fit with this reaction system.