Adjust the dose of related synthetic method through the experiment, in order to improve the efficiency of the synthesis of intermediates. When adding catalyst 1.8 g, the product yield up to 63.11%; Adding 30g anhydrous ethanol yield up to 61.45%. different materials for the amount of drug income atorvastatin...

We prepared five heteropolyacid catalyst by one-pot method, the reaction temperature was 65oC, reaction time 8h, hydrogen peroxide 3mL, naphthalene 1000mg, H4PMo11VO40 100mg, naphthalene conversion was 30.3%,the selectivity of naphthol was 46.7%. The heteropoly acids have Keggin structure, but also have...

Amphiphilic carboxyl-terminated Hyperbranched Polyester (c-HBPE) is synthesized by 1,2,4-Benzenetricarboxylic anhydride BTAA and 1,6-hexanediol. The structure of c-HBPE is characterized by FT-IR, 1H-NMR, GPC. Vesicles of c-HBPE are fabricated by aqueous self-assembly. Results of Transmit-tance Measurement(TM),...

Prepared by impregnation of MCM-41 molecular sieve, zeolite and modified MCM-41; to load 5% of modified Fe/MCM-41 zeolite catalyst, the reaction temperature 60oC, reaction time 8h, hydrogen peroxide 2mL, naphthalene under 1000mg, Fe/MCM-41 catalyst 100mg conditions, naphthalene conversion rate of 5.8%...

This paper mainly discusses the pellets low temperature pulverization performance experiment research. Through KSZ-03 ore comprehensive metallurgical properties tester and drum devices such as low temperature for pellets in index for performance test, to determine the low temperature reduction degradation...

An environment-friendly carbon material with an atomic layer of graphene oxide (GO)–graphene and an atomic layer of GO, hereafter denoted as GO–G–GO, was fabricated by an easy one-step hydrothermal method. GO–G–GO was obtained by centrifugation to separate GO and graphite from the remainder of products...

Bio-diesel-a biodegradable, sustainable and clean energy, has received growing interest especially in recent years, chiefly on account of development in biodiesel fuel and serious ecological pressures nowadays. In the production process of biodiesel from biomass, separation and purification is a critical...

In order to obtain the effect of modification to the tongue gap on vibration when medium is oil in a double-suction pump.The three-dimensional unsteady numerial method was applied to simulate the flow with different volute tongue and base circle diameter by using realizable - turbulence model. The distributions...

Surgical robots are usually controlled by the method of the independent PD or the PD model based on gravity compensation. However, the system is still a open loop control with both of the control models. The two models can not consider the dynamics effectively either. The position error can not be guaranteed....

Flutter, a seriously dynamic and severe self-excited vibration, easily exists in mechanical processing system, is a major factor, impact the workpiece surface quality and machining efficiency. It has been the main research to explore the resource, analysis the mechanism and pursue restraining method...

Article take the coal mine equipment carrier for example, integrated use the robot basic theory and electro-hydraulic control system theory to research of planning steering trajectory, coordination and control its speed and so on basic theory. Design the control law, and force through the connecting...

Along with German industry 4.0 and China makes 2025 wait planned implementation, Internet+, the thing unites a net, intelligence factory, the rise of the unmanned factory, being in conjunction with of various industrial robotses homework is foundation.Previously enter to make realm, intelligence's making...

The paper discusses on the industrial engineering technology for weapon equipment's maintainability design, including maintenance standardization flow design based on process analysis, the maintenance operation design based on motion analysis, maintainability index verification based on ergonomics, equipment...

For the different column-to-ground semi-rigid connection coefficients of assembled rack, with common beam pallet rack as research object, the orthogonal experiment was designed, which is composed of 11 groups of connection schemes and 4 kinds of load conditions. In this work, finite element analysis...

Make the composite electrolyte by doping Al2O3 powders ,in the ratios of 1:0.02 and 1:0.04 respectively to the electrolyte masses, into initial powders of the electrolyte-BaZrCeYO made in the method of Pechini. After 10 hours sintered at 1400 , the composite electrolyte was completed , XRD test carried...

The research of magnet-track relationship is the foundation and key point in maglev system dynamics. Due to the ups and downs, traverse, yaw, pitch and roll of the suspension electromagnet will certainly happen when maglev train moves, so establish three-dimensional numerical model and calculate the...

A new type of polyhedral oligomeric silsesquioxane (POSS) (7Ph-T7-Vinyl) containing phenyl and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) was synthesized from phenyltrimethoxysilane, trichlorovinylsilane, and DOPO in high yield. This product was subjected to addition reaction using an...

Jin’an bridge station is located at the middle reaches of Jinsha river which is a new super large hydro-power station, since impounded in 2012, different levels of landslide happened to the reservoir slope, and the change of seepage field is one of the main reason causing geo-hazards. In this paper,...

With the development of China's science and technology and large-scale construction of infrastructure, put forward higher requirements to the highway pavement performance, modified asphalt is necessary. Aging is a problem of modified asphalt in use process cannot be ignored, which directly affects the...

In this paper, reviewed some biodegradable polymer materials such as photodegradable polymeric materials, chemical synthesis polymer materials, microbial synthesis polymer materials, photo biodegradable polymeric materials and mixed type polymer materials. Points out the existing problems and the development...

Hybrid system by two electric motors and power source to drive the vehicle engine is running, the two power sources in the vehicle running in how power affects the performance of the entire mixed distribution system. After the diesel engine because of its non-linear, multi-condition, time-varying delay...

With the development of our high speed train, passengers on the train ride comfort requirements are gradually increased. Therefore we should study some emergency cases in car environment. The article explores the use of CFD software method to realize the full return air model, provide the basis for the...

To analyze the impact of stress and seepage field coupling effect on the stability of the tailings dam, Finite element analysis software MIDAS-GTS, build analytical models Mohr-Coulomb criterion. Coupling of different pile heights than the stress field and seepage field analysis of the tailings dam at...

This paper is studied according to the method of auto fault diagnosis and proposes a data table structure of fuzzy diagnosis model based on fuzzy H net with the presenting of the reasoning process. Aimed at the uncertainty and fault fuzzy appearing in automobile, fuzzy H net is used to the fault diagnosis...

In this paper, ZM21 and ZM21+Ce magnesium alloy extrusion in different processes before homogenization treatment, the microstructure was observed extrusion products and test their mechanical properties, analysis of rare earth cerium and homogenizing influence of annealing process on magnesium alloy ZM21...

In this paper, adding different Nd content of ZK20 magnesium alloy extrusion were studied Nd on ZK20 magnesium alloy extrusion and mechanism of influence of microstructure and mechanical properties, and optimization of Nd in ZK20 magnesium alloy added amount, in order to obtain comprehensive mechanical...

Explosive actuated device is one kind of electric-explosive initiator often be used in weapon and aviation and space flight equipments' executing system. As one of the important firing units in explosive chain, its quality affects the safety and reliability of whole system greatly. Therefore, when using...

Since the Japan's A.NISHI designs a wall-climbing robots prototype which based on the principle of negative pressure in 1966, wall-climbing robots technology has been rapid development in the world. No matter from the aspects of adsorption methods, movement forms or application ways have made considerable...

In this study, four laboratory-scale horizontal subsurface flow constructed wetlands (HSSF CWs) were designed to reveal the effects of cattail fermentation broth and Typha latifolia on nitrate removal. The results showed that both the addition of cattail fermentation broth and the presence of Typha latifolia...

Multiporous CuCo2O4 microspheres have been synthesized via a facile solvothermal method and used as bifunctional electrocatalysts for rechargeable Li-O2 batteries. The Li-O2 battery utilizing CuCo2O4 shows a higher specific capacity of 5607 mAh g-1 than that with pure Ketjen black (KB). Moreover, the...

This study focused on electrolysis of refractory malachite green waste water with three-dimensional electrode. In this research, high-purity graphite was used as the cathode, titanium-plating metal mesh as the anode, while coal column, coconut shell granular activated carbon and catalytic Titanium dioxide...

Cane sugar crystallization, which has both heat and mass transfer, is a very complex chemical and physical process. Due to the constraints of technical conditions, detection of crystals is mainly relied on artificial methods with disadvantages of low accuracy and subjective judgment errors. Application...

Garment industry development causes increasing competition, the traditional manual cutting has been unable to meet market demand, NC formation becomes the inevitable trend. In this paper, a king of garment tailoring machine control system is designed based on Trio motion controller, the hardware and...

Improvement of the level of industrialization accelerates the development of logistics automation technology. The application of palletizing robot is becoming more and more, its flexibility is improving continuously. In this paper, the palletizing robot control system is designed based on trio motion...

To study the static and dynamic performances of lathe bed made of resin mineral composite, a series of finite element analysis by ANSYS Workbench for lathe beds made of cast iron and resin mineral composite are conducted respectively in this article. It is proved by the results acquired from the static...

With the rapid development of construction machinery industry, especially as domestic rapid economic and social development of the strong demand for engineering machinery, engineering machinery manufacturing industry is facing pressure from various resources saving and environment friendly requirements,...