Venturi scrubber is usually used to purify biomass gas. In order to improve efficiency of biomass gas purification of venturi scrubber, a test apparatus of the square section venturi scrubber was established to purify biomass gas. On the basis of analysis of the surge flow and the model selection of...

The mathematical relationship between reactive power consumed by DC system and AC voltage on inverter bus is derived under different control modes, respectively. Based on these relationships, a new definition of multi-infeed short circuit ratio (MISCR) is formulated from the power-flow model of PQ decoupled...

For the sake of improving green energy-saving efficiency of the radio communication system,we proposed a green energy-saving algorithm for multichannel communication system based on the energy consumption model analysis. Firstly, mathematical model of the multi-channel energy consumption minimization...

a DFIG high voltage ride-through method with the consideration for the safe operation voltage of the generator unit is proposed in the article. Based on the dynamic reactive support capability of DFIG, during grid voltage swell, the reactive powers outputted by the grid-side converter and the generator...

As the qualitative analysis software of laser induced breakdown spectra (LIBS) mainly relies on the principle of proximity and artificial identification, we developed a spectral data processing software, which manages background subtracting, filtering, peak searching and elements identifying, etc. The...

The paper designs an indoor location system based on RFID and power line carrier technology, introduces the hardware structure and software system working principle. Use low-voltage power line inside the building to solve the field wiring and information transmission. Use RFID technology to get position...

As the scale and the size of communication networks increase rapidly, power communication has stricter requirements in the communication scheduling intensification. This paper firstly analyzes the requirements of digital visual systems (DVS) of communication’s indicators. It also classifies these indicators...

In the process of comprehensive promoting the electric power enterprise information and communication provincial, city and county "integration, specialization, lean" construction, the scheduling "integrated" support system can't fully meet the needs of intensive development of information and communication...

The paper presents a design of Electric Power Communication Patrol System based on Dispatching Intensification. The system overall architecture, system security architecture, and system function architecture are elaborated in detail. The system overall architecture mainly explains the perception layer,...

.The electric power transmission network management is changing from decentralized to province-centralized mode to adapt to the development trend of power grid. For the current hierarchical management situation of transmission system, the paper mainly studies the centralized mode. Considering the difficulty...

Based on Finite element method (FEM), analysis of natural frequency and dynamics response is carried out in this work. Firstly, modeling of rotor system in steam turbines is analyzed with Euler-Bernoulli beam element. Secondly, natural frequency of the rotor system is obtained and compared. Thirdly,...

The compression process in an axial compressor with water injection is a complex two-phase flow involving many changes of water existing forms. Boundary conditions close to the real ones of water droplets on compressor blade are extremely important for numerical simulation. Water droplet impinging and...

A CS-WEC utilizes an artificial spring created by feedback control of sliding-mass angle on the circular track; it is free of problems associated with mechanical springs. This paper also demonstrates that the harvested power is always more with the spring than without, and with the spring, the power...

In order to evaluate the risk of wind power curtailment and loss of load brought by wind power ramp event on power system, risk assessment model of wind power ramp event based on Monte Carlo method is established. According to the result of wind power prediction system, the wind power model of day-ahead...

A Brazil near-shore wave energy converter uses a large float and a long arm to drive a pump-turbine-generator system on land. This paper proposes to convert the float into a Circular-Slide Wave Energy Converter with on-board power generating equipment.

Traffic is an important area of cloud computing application and development, and the traffic cloud computing is a key means to provide powerful support for the basic service and promote the coordinated development of the transport system by service model innovation and information resources integration...

The accurate and practical wind speed model of wind farm is the basis of the relevant research work of wind power prediction. This paper based on the wind farm and the real-time data of wind turbine, put forward a kind of dynamic distribution model of wind speed that consider the wind turbine wake and...

Feature selection plays an important role in the field of text categorization. The traditional feature selection methods such as information gain(IG), the weight of evidence for text(WET) , feature selection and so on are commonly applied in text categorization. However, the traditional feature selection...

With respect to the multi-state and multi-objective optimization problem of renewable energy grid-connection inverter system, this paper came up with a multi-mode predictive power control method to grid-connection inverter system, which established the discrete predictive model for island model and grid-connected...

As an economical and effective means, water injection technology is currently used to improve the gas turbine power and efficiency. Due to the relatively long residence time of water droplets in the multistage compressor, the droplets may have a large amount of migration along the radial direction in...

The current transmission line is constantly improved and updated, in order to save space, a lot of back and multi-line double back. Power lines during the operation induced voltage is very large, you must mount the ground. Ground wire must be multi-strand copper wire, whose cross-sectional area of not...

By analyzing large GIS substation hub horizontally style, typical sub-voltage electrical layout design, grading flat and interior layer, sub-voltage, level of body building. Discuses the principles of the annular radial GIS substation and square radial GIS substation layout design. Generally large hub...

The content of diphenylamine in standard powder is determined by pure diphenylamine as external standard substance in this paper, the value of relative deviation is in the range of ±3%. The method was applied to the analysis of samples of powder, the vales of RSD (n=6) were found to less than 3% and...

Regeneration technology for waste rubber has been an important research subject in rubber industry for many years, but currently the enterprise mature reclaimed technology, mostly existence of high pollution, high energy consumption problem, can not meet the requirements of energy saving and environmental...

Energy shortage and environment pollutes aggravate ceaselessly all over the world. As a green clean pollution-free renewable energy, tidal current energy has characteristics such as large reserves, wide distribution, predictability, little environmental pollution, etc. Development and utilization of...

A nanocomposite film based on Dawson-type polyoxometalate cluster (P2W18) carbon nanotubes (CNTs) and chitosan (CS) were prepared on quartz and ITO substrates by layer-by-layer (LbL) method. These lms were characterized by UV–vis spectroscopy, cyclic voltammetry (CV) and Scanning electron micrographs...

The addition of another electrochromic component has been considered to be an important way to obtain multicolor film. Herein, we fabricated the composite films containing polyoxometalate (POM) clusters, auxiliary materials and polyelectrolyte on quartz and FTO substrates by layer-by-layer assemble method...

It is usually with Q-switched technologies in order to obtain the peak power of laser pulses[1].This paper analyzes the characteristics and the electro-optic effect of LiNbO3(LN) crystal. We use LN as Q-switched crystal of 1319nm infrared laser and estimate its required voltage. The corresponding experimental...

In view of the sensitivity of power quality indices on different loads, a method for the dynamic comprehensive evaluation of power quality based on the improved scatter degree was put forward. Firstly, according to the sensitivity of power quality indices on different loads, the order relation among...

The organics in the water after advanced treated and to be disinfected are classified basing on different characteristics. Compared with chlorination, the control of DBPs formation from different organics by chloramination is studied. The test results show that, the chloramine can reduces the TTHM and...

Due to large amounts of traditional energy consumption, faces increasingly dry up, people began to look for alternative new energy. And waves in the ocean energy can make a very good substitute, so countries began to study wave energy power generation. In the study of wave power device, the movement...

Large-scale distributed wind power connected to grid must be dispatched and managed by the provincial gird dispatch center. In order to unify representation of wind power equipment’s information and function in various applications, this paper extends the common information model of the wind plant based...

The interface delamination of waste plastic chip will seriously affect the value of their recycling reuse; therefore, it has been a hot issue in recycling researches of Waste Electrical and Electronic Equipment (WEEE). Based on the exponential cohesion theory, this paper has researched chip delamination...

Project development in a power enterprise always needs to authorize external devices access to the enterprise intranet for testing. In order to avoid an external device with a virus and pose a security risk to the power information system, external devices should have strict security assessment before...

This study develops a machine tool consumption and energy management platform. The proposed method established a variety of electricity profile in order to differentiate various processing status in machining conditions. The platform provides energy related application services, including machine monitoring...

A detailed simulation model of Photovoltaic (PV) generation system based on MATLAB/Simulink and the detailed mathematical presentation, is established first. Its inverter-based simplified model, i.e. the switching-function equivalent model is proposed and simulated, overcoming the limit of traditional...

This paper deals with the power loss of a photovoltaic inverter system. The research aims at revealing the loss mechanism of different parts and developing corresponding mathematical calculation methods of the loss. In the first part the structure of a commonly used three-phase grid-connected PV inverter...

To research on the equivalent of perforating through layered space plates and homogeneous steel, based on the rule that the limit penetrating velocity, the penetration process of tungsten sphere into layered space plates and homogeneous steel was simulated with LS-DYNA finite element code, the numerical...

At present, haze weather occurs in each big city of China in different extent. The problem of haze has become one of the biggest environmental problems now and the high energy consumption and high pollution industry is the source of haze weather. This paper takes the evaluation of eco-industrial park...

Three-phase brushless DC motor is adopted as the drive motor for electric turbocharger in the paper. The selection of DC motor without position sensor is adopted three-phase star connected two-two excellent performance conduction mode as electric machine work to simplify the circuit structure design,...

The research of the reliability will be further into the substation level with the combination of the substation main wring and power system. In this paper, the power system reliability considering the effect of the substation main wiring reliability evaluates by two different methods which are the analytical...

The blower with Active Magnetic Bearing (AMB) has the advantage of high speed, high reliability, small size, good adaptability. Power amplifier is an important part of the magnetic bearing system, directly determines the magnetic bearing system performance. The three-level PWM signal generation algorithm...

Photonic Doppler velocimetry (PDV) is a fiber-based interferometer which has been widely used in dynamic shock physics research. Although the conventional PDV systems are simple to construct, it has special requirement to the probe for getting appropriate amount of reference light. This paper proposes...

This paper proposes a design scheme on the low-noise electrical tuning amplifier circuit of receiver front-end. According to key indicators to be achieved, it made a overall simulation design of the front-end amplifier by ADS, focusing on the analysis of the characteristics and parameter selection method...

This paper presents a video-based method to extract breathing waveform from the upper body movement associated with breathing, which is based on Eulerian Motion Magnification and principal component analysis (PCA). Using our method, we are able to obtain the breathing waveform which contains different...

Based on the multi-innovation least squares algorithm and the optimal Kalman filtering method, a new multi-innovation self-tuning Kalman filtering algorithm is presented for systems with unknown model parameters. It avoids the flaw of classical Kalman filter which needs to accurately know the model parameter...

This paper introduces a kind of wind tunnel test bed with a 3-RPR structure. Ansys workbench is chosen to be the main tool here to measure the structure’s stability. Linear static structure analysis, modal analysis and harmonic response analysis are carried out to detect the force, the frequency and...

By simulating the runner of the VARI molding process with PAM-RTM about the front floor of the car, examines the different injection methods, different influence of distance of hose guide for filling time, analyzing the resin flow patterns, the effects of the mold cavity pressure distribution and the...

In this paper welding residual stresses of welded H-beam considering both butt weld and fillet weld have been researched. Taking the welded H-beam frame as background, basing on technological parameters of arc welding construction sequence and the fabricated method, the three dimensions thermal-mechanics...

With the bursting and rapid development of computer science and technology, the need for designing signal anti-interference devices is urgent. Therefore, we conduct research on high frequency signal anti-interference and corresponding applications on the design and implementation of cheating signal detector...

Using flashing combustion synthesized Si3N4 and silica fume as raw materials, the effects of firing temperature (1300°C, 1400°C, 1500°C, and 1600°C) and duration (3h, 6h, and 9h) on the synthesis of Si2N2O were studied. The results show that the main mechanism of the reaction is Si3N4 and silica fume...

The removal of decabromodiphenyl ether (BDE-209) from contaminated soil using sepiolite-supported nanoscale zero-valent iron was investigated. The experimental results indicated that the removal efficiency of BDE-209 from soil was greater than that of the nanoscale zerovalent iron (nZVI). The removal...

Electronic technology is a new technology with the advent of the information age categories emerged gradually, along with the rapid development of network technology, electronic technology has been widely used in different fields In this paper, analyzed the electronic technology based on the development...

Researching on fluid-solid coupling problem of wind turbine can help improve the optimization of global structure of wind turbine and improve the level of the blades design, which has been one of the current research hotspots and difficulties in the field of wind turbine design. This paper describes...

Small-scale self-focusing (SSSF) causes the distribution of spatial intensity to become asymmetrical. Spatial distribution would generate new growth point during SSSF. We measure the spatial-temporal evolution for ultrashort laser pulse with different truncation parameter of knife-edge during SSSF. Our...

The paper introduce the photolithography technology. First, the writer explain the process of photolithography. a modern wafer (form IC) will go through a photolithography cycle up to 50 times, some 100 times more. then, the article illustrate photoresist , photoresists are classified two groups :positive...

In order to accelerate the restoration and utilization of mine wasteland, this paper describes an optimization study on substrate materials. The optimization was based on nine well-planned orthogonal experiments (OA9 matrix). The experimental materials were tailings, turfy soil and sawdust, and the experimental...

The peridynamic is a kind of unique theory which can deal with continuous models, defect of crack and particles in a single framework. It does this by formulating problems in terms of integro-differential equation rather than partial differential equations. This theory can be used to investigate the...

The electromagnetic relay is one kind of controlling electric appliances. The electromagnetic relay is also a kind of electromechanical product. It has its superiority over other controlling appliances because of it’s highly insulation with open circuit and its absolutely little resistance with closed...

Based on the density functional theory (DFT), we predict electronic properties of the non-periodic structure and the periodic structure of carbon nanotubes (CNTs) and silicon nanotubes (SiNTs). In the simulation process, we studied how to increase the length of nanotubes or add H atoms to dangling bond...

An iron-cobalt alloy ceramic coating grows on the surface of Q235 carton steel in situ by the micro-arc oxidation technology; and the phase composition, elementary composition, surface morphology, surface roughness and thickness of the ceramic coating are analyzed by X-ray diffractometer, energy disperse...

The moisture content of sludge in sewage plant is 80%-85%,In order to disposal, sludge need to be deep dewatering. The test added in composite conditioner with calcium superphosphate in different proportion. Measure the moisture content ,ph and volatile organic matter. The experimental results show that,...

The effects of C/N on removal rate of COD and NH3-N of a continuous running hybrid biological reactor were discussed. The results showed that the removal rates of COD and NH3-N were both more than 90% in the normal condition. The bio-film played a key role in removing the COD and NH3-N in hybrid biological...

In order to improve the serious haze weather, this paper puts forward a kind of PM2.5 purification detection device based on solar thermoelectric power generation. Combined with the actual operating conditions, the thermodynamic model of the temperature difference power generation device is established...

Chromium migration and transformation is a complex process in groundwater-rock interface, including a series of physical and chemical reactions, such as adsorption-desorption, redox, dissolution-precipitation, complexation-dissociation etc. It was affected by groundwater pH, Eh, the type and the content...

During the last decade, the sensors based on chitosan had been an active research topic due to its great practical value. The sensors had showed excellent superiority, low cost, ease of fabrication, fast response time and nice repeatability. This review discusses the preparation and application of sensors...

In this paper, we conduct research on spread spectrum communication signal anti-jamming technique based on MIMO and prior filtering theory. In order to improve the bandwidth utilization of spread spectrum system, people will multicarrier technology is applied to medium and long-range underwater acoustic...

Researches on methyl tertiary butyl ether(MTBE) distillation desulfurization process are very common now, but the influence of the separation of tertiary butyl alcohol(TBA) in MTBE on this process was seldom reported. This paper analyzes the 2-column MTBE distillation desulfurization process in detail...

Wireless and passive sensor has an important application in industry sector. This paper designs a spontaneous electricity wireless and passive air velocity sensor, which is based on the traditional three-cup of wind speed sensor. This paper also tests the characteristics of the sensor wirelessly. The...

A method is presented in this paper that can easily identify the critical part of the power system. So the critical part can be protected to avoiding damages from nature disasters as well as human factors. This model avoids computing complicated parameters such as the electrical betweenness etc. and...

The signal integrity problem has become a limit on current electronic system design and development. This paper studies the transmission performance for high-speed PCB complex interconnect structural model consists of via, solder ball and trace. Different length of traces and different radius of pads...

At In the photovoltaic, maximum power point tracking technology is an inevitable problem. The perturbation method is simple to operate, easy to implement and so on, however, the traditional perturbation method tracks slowly and is easy to shake. This paper compares the tracking characteristics between...

Interior and external environment of the high-speed train are connected by the ventilation system, but the structure of the complex ventilation system and slenderness is relatively large, and therefore can be a one-dimensional assumption. This paper selects IC06 carriage of high-speed train CRH380B EMU...

At present, Cyanidation is still undoubtedly the most important and widespread of the various hydrometallurgical technologies that were used in the extraction of gold and silver from primary ores and concentrates, Metallic zinc has long been known as being a good precipitant for precious metals from...

The activated carbon is a kind of adsorbents which has ample internal pore structure and high specific surface area, widely applying on chemical industry, pharmaceuticals, metallurgy industry, agriculture and environmental protection. The effects of operation parameters such as impregnation ratio, activation...

The brake amount of traditional longitudinal differential protection of motor is a fixed value, so that for special extremes the relay is prone to maloperation or refuse to move. According to the motor fault characteristics, I take out a motor longitudinal differential protection principle which is proposed...

When we move the Hall component in a uniform gradient magnetic field under the constant current, the Hall electromotive force it outputs depends only on the amount of its displacement in the magnetic field. According to this characteristic, this paper analyses the basic principles, the selection of uniform...

The accuracy of short-term wind power forecast is important to the operation of power system. Based on the real-time wind power data, a wind power prediction model using Elman neural network is proposed. In order to overcome such disadvantages of Elman neural network as easily falling into local minimum,...

China Certification Centre for Energy Conservation Product found in the investigation that the standby energy consumption accounts for about 10% of the electricity consumption of Chinese family. This paper presents an energy-saving design by human body induction in order to cut off the power supply when...

As Brake-By-Wire technology matures, ideal distribution of front and rear wheels braking force was available for PHEV through electro-hydraulic braking. In order to study the impact factors of regenerative braking recovery rate of this system, PHEV traveling on the flat and level road is analysed theoretically....

A triangular metamaterial structure unit is presented and the effective permittivity and permeability parameters are retrieved from the transmission and reflection data. Simulation results show that the combined unit exhibits left-handed passband in terahertz (THz). Triangular electromagnetic metamaterial...

A low cost indirect type AC voltage regulating system is proposed to overcome the grid pollution of silicon controlled regulating circuit and the high cost of chopping sine wave regulating circuits. The system consists of full bridge rectifier, filter and full bridge inverter. The bipolar SPWM control...

The research background and characteristics of compound bioflocculant (CBF) were introduced. The paper focused on research and application of CBF, including producing compound bioflocculant by Low-cost substrate and engineering application of CBF. Finally the research development of CBF in the future...

In the design of advanced aircraft turbofan engine, applying the continuous fiber reinforced metal matrix composites(MMC), which have excellent properties of good mechanics, resistance to high temperatures and light mass, to manufacture some of the key components is the effective way to realize thrust...

Since the size of the early antenna is big and not easy to carry, the one-eighth mold SIW Omni-directional antenna is described. The overall performance has been improved. Compared with a quarter mode antenna which is already existed, the relative area has reduced by 50%.

Gear is the key part of cement rotary kiln, and lifting the process of deformation delivers a direct impact upon gear ring manufacturing precision. This paper takes the 10630. 249mm gear ring of rotary kiln as an example, expounds the system of lifting method for gear ring and selecting the optimization...

An efficient regeneration protocol for in vitro propagation of castor through embryonic tips was developed. According to the different properties of seed germination and embryo germination, 5 explants with high regeneration ability were picked out and their stress abilities in pre-culture period were...

High-speed high-precision data acquisition applications in modern industrial control field is very wide. The reasons of Environmental and circuit, the interference signal is introduced into the collection process inevitably, resulting in loss of precision and sampling error rate increases. When improving...

This paper designed a CAN network analyzer based on USB bus technology, whose function including network analysis, protocol parsing and node simulation. The CAN network analyzer based on USB interface in this article is mainly composed of two parts - USB-CAN adapter and host computer interface. This...

In the paper, a digital optical communication system based on optical two-amplitude minimum shift keying (2AMSK) signal transmission with coherent detection is proposed. The simulation results show that, 100-Gb/s optical 2AMSK signal is successfully transmitted over 480 km standard single mode fiber...

Controllable weak magnetic field can be generated using circular Helmholtz coils. However, it is complex to calculate the internal magnetic field distribution. This paper mainly expounds the formation mechanism and the simulation method of controllable weak magnetic field. A simulation model is established...

This paper analyzes the design requirements of high-performance EPS controller, on the basis of which, we select Freescale Power Architecture ECU MPC5602P special for EPS. By the means of Modular Design, we propose a new design for EPS controller hardware, which focuses on MPC5602P minimum system, power...

In view of the biomass gasification processes a nonlinear, non-minimum phase characteristics, instability, dynamic process of the characteristics of the large delay and load disturbance, contains a large number of uncertainty factors, accurate mathematical model is hard to express, using a single control...

Objective To analyze the spatial structure and structure feature, then predict B-cell epitopes of Mycoplasma suis ORF9 encoding protein. Methods The secondary structure, structural feature and B-cell epitopes were analyzed and predicted by DNAStar software and IDEB. Results the secondary structure of...

In order to investigate in influence of coagulant concentrate on volatile components of hard cheese made from yak milk cheese samples with half normal concentration of rennet(0.5X), normal concentration of rennet(X), 1.5 times normal concentration of rennet(1.5X)and with double concentration of rennet...

For a single sample face recognition problems, this paper propose a supervised two-way two-dimensional locality preserving projection method to extract the facial features, based on locality preserving projection. The recognition phase, this paper presents a method of sub-characteristics voting, In this...

The aim of this study was to explore the biomechanical effects of different frequencies whole-body vibration training on gastrocnemius in rats. The conclusion showed that (a) there was significant difference between high frequency group and control group, and there was extremely significant difference...

This paper studied the antibacterial activity of the anthocyanins from blueberry wine pomace. The blueberry wine pomace, which is by product in blueberry wine process, is rich in anthocyanins, and the anthocyanins extract from blueberry wine pomace, then the extraction was purified and components of...

Internet of Vehicles is the basis of the application of intelligent transportation system .This article has carried on the analysis and discussion about the concept of IOV, applicable architecture, system service type, and need to emphasize solving the key technology of application and development of...

To enhance the water repellent property of cotton fabric, cotton was grafted using dodecafluoroheptyl methacrylate (DFHMA) monomer via atom transfer radical polymerization (ATRP) method in aqueous media. The structure of grafted cotton fabric was characterized by scanning electron microcopy (SEM) and...