This paper provides a new scheme for wireless power transfer (WPT) technology based on magnetically coupled resonance. The technology is used to solve the problem of reliable power supply for the monitoring terminals of high voltage power grid (HVPG). Because the technology takes the magnetic field as...

China is one of the world's largest energy consuming countries, energy performance evaluation is one of the issues of concern. This paper analyzes Chinese energy efficiency evaluation in the background of low-carbon including the review of the impact of energy efficiency on economic growth and the improvement...

After adding passivators in corrosive sulfur-containing transformers, conducted follow-up research and monitoring on the effectiveness and comsumption of passivator, and monitor the quality of transformer oil after adding passivator, which aims to provide a reference for the operational monitoring after...

This paper has analyzed status quo of drought in Lanzhou and the reason why not make full usage of the Yellow River to improve the local environment. It also includes present status of wetland, wild plants, plant, aquatic plants and wild animals in Lanzhou. Research and put forward the scheme of using...

This research project applies solar energy photovoltaic power generation system to remote rural residences in order to solve the power consumption problems of the villagers. And this project is the first demonstration project of the application of new energy—solar energy, in the production and life at...

Through geological hazard survey, the network of group monitoring and preventing in the surveyed area is built and perfected, the purpose of which is to improve local inhabitant consciousness on the geological disaster prevention and mitigation, and to insure the monitoring, early warning and geological...

Currently, the operation management of energy meter is still using regular maintenance and maturity rotation mode. With the recent popularity of electronic power meter, new online monitoring methods for electric power meter have improved greatly. In this background evaluation model for electric power...

Industrial design has accelerated the consumption of resources and energy, and also caused the deterioration of the natural environment and ecological balance.Based on green design ,basic connotation and far-reaching significance of low carbon environmental protection,this paper analyzes the relationship...

By actual testing of the first network system of a company in Changchun City, the main energy consumption aspects were analyst and calculated, then the determination of energy-saving evaluation indexes was discussed. Based on the properties of indexes, the energy-saving evaluation index framework was...

The article study the effect and different conditions of degradation phenol in waster water samples via Ultrasound (US), H2O2, fenton reagents oxidation technology. Experiments show that the degradation of phenol only use of single US or H2O2 treatment is not ideal while US used in conjunction with Fenton...

The aluminum silicon alloy production enterprises has a 25000KVA of high purity silicon metal furnace in China, 350-550 process exhaust produced by reaction furnace is directly discharged into the atmosphere now. According to the characteristics of low temperature flue gas, such as flow rate and temperature...

In the petroleum industry, a large quantity of oil-contained wastewater is produced every day. This kind of wastewater normally contains oil droplet from 100 to 1000ppm, which is characterized by tiny oil droplets, dispersion, stable, uneasy to reunite float. The conventional methods such as demulsification...

According to the mechanical defects of polypropylene (PP), we blended modification of PP with calcium carbonate (CaCO3). We used the blends of CaCO3 and PP as the research object to test the mechanical properties of CaCO3/PP composite materials with different proportions and studied the influence that...

Yellow River reservoir water, which is slightly polluted and owns a high content of suspended particles, is studied as raw water in this paper. Online particle counting instrument is used to detect and track the particle content of raw water. Potassium permanganate pre-oxidation process combined with...

Through analyzing numerical simulation about shutter tuyere non-isothermal Jets, the influence of buoyancy flux was studied in axis offset, axial velocity attenuation and the settlement of cold wind. The conclusion is that buoyancy flux promotes axis offset to a certain extent; buoyancy flux does not...

Heavy metals chemical stabilization with phosphoric acid was assessed for two kinds of fly ash in order to transform available heavy metals into insoluble metal phosphate compounds and reduce the risk to the environment. The behavior of heavy metals in the liquids and solids samples were both investigated....

Through the test in the laboratory, the removing effect of ultrasonic pretreatment process on e.coli, TOC, UV254, SUVA was studied. The experimental results show that ultrasonic has certain inactivated effect to e.coli. When ultrasonic action time is 30min and ultrasonic density is 0.75 w/mL, the removal...

To monitor the soil temperature field of a ground source heat pump project in Changchun and research their variation and influencing factors. Research showed that: the soil temperature field with the heat pump heating/cooling alternate operation present a periodic variation. The impact of outdoor temperature...

Accurate fault location is helpful to improve the stability of power distribution network. With the integration of distributed generations and electric vehicles, the traditional distribution network gradually became the active distribution network, which requires new technologies for fault location....

Among methods used for transdermal penetration enhancement of drugs, the application of transdermal penetration enhancers is a method that has been most studied currently to promote the transdermal absorption of drugs, and also the most convenient method. Transdermal penetration enhancers (penetration...

The probabilistic restitution model was adopted by fitting probability functions with Gauss-Hermite method for the integral inlet separator particle trajectory simulation compared with deterministic restitution model and elastic collision model. Result shows that the above three bounce models perform...

This study was conducted to discuss the index and method of urban land ecosystem health assessment; and to evaluate the condition of land ecosystem health in Chengdu. The assessment index system of ‘vitality-organizational structure- resilience-ecosystem service function-life style’ was established;...

With the constructions of new-type towns, power demand in the towns grows constantly. In this paper, we have analyzed new features of towns and power utilizations in the new circumstances, and promoted morphological characteristics of distribution networks for new-type towns. We have stated several indicators...

Lycoriella pleuroti Yang et Zhang (Diptera : Sciaridae) and Scatella tenuicosta Bennison (Diptera : Ephydridae) have become major pests on greenhouse seedlings and caused lots of economic losses, which has greatly restricted the development of modern facility agriculture in Wuhan. We reported here the...

According to onsite investigation and analysis of the geo-hazards in Youyu County,their main types are identified as landslide,collapse,debris flow and surface collapse The causes are analyzed in terms of topography,lithology,rainfall and other factors The research result has shown that the geo-hazards...

This paper, by comparing the existing problems of distribution network technical transformation and the advantages of energy management contracting, puts forward the necessity of the implementation of energy management contracting mode of distribution network transformation of the power grid enterprises,...

In order to solve the problem that simulation accuracy and simulation flexibility is difficult to take into account in real-time simulation of high frequency converter, a real-time multi-rate simulation method based on FPGA+PC is proposed. This method fully demonstrated the simulation principle of multi-rate...

It may lead to low frequency oscillation in interconnected power grid if part of the lines of power transmission section are disconnected. Reducing the output of generators in sending end urgently is an effective measurement to restrain oscillation, and different control strategy may lead to different...

Low frequency oscillation has been a serious threat to security and stability of power grid, and how to locate the disturbance source accurately is an important issue to suppress low frequency oscillation. The existing location method has poor adaptability to oscillation with time-varying steady points...

Mesoporous silica FDU-12 with different morphologies has been successfully hydrothermal synthesized under static or stirring conditions by changing the water-bath temperature. The as-synthesized materials were characterized by X-ray powder diffraction(XRD), N2 adsorption-desorption, scanning electron...

The emission permit system and carbon quota system should be concurrently implemented for fuel consumption. The emission license is used to distinguish the different uses of automobile. The differential quotas of CO2 emissions are implemented for production or living automobiles, urban or rural users....

Most of marine diesel engine faults is caused by the wear. So, wear analysis is particularly important. In this paper, we have got the wear state and wear mechanism of the marine Cummins diesel engine by analyzing the selection of two typical oil sample with the oil ferrography analysis technology, and...

Chinese fir (Cunninghamia lanceolata) is an important commercial timber species in China. In the recent years, seasonal droughts occurred frequently in the fir growing areas and made a great impact on its production. In this study, PEG-6000 was used to simulate water deficit, while the drought-resistant...

This paper presents the current researches about temperature profiles in multilayered flexible. The measurement methods of temperature profiles to the prediction model for temperature distribution in pavement structures are summarized and discussed. The temperature influence on bearing capability and...

Warm Mix Asphalt is a new type of asphalt mixture which can reduces the mixing temperature and emissions. A kind of warm agent (LRT) is chosen in this study. Hot and warm mix asphalt mixture were designed and their high temperature, low temperature, moisture sensitivity and fatigue pavement performance...

In this paper, we have proposed a Group Selection Clone Immune Model for energy resource scheduling of microgrid, which consists of integrated microgrids and lumped loads. Multiple objectives are considered for load balancing among the feeders, minimization of the operating cost, minimizing the emission,...

On the regional sedimentary background, the sedimentary facies was studied by well-to-seismic integration, in view of the complicated situation of the researched region. Based on the analyses of lithologic association, sedimentary structure, paleontology, rock color and its contact relations, well logging...

In order to improve plug removal effect and optimize operation parameters in steam injection well of Gaosheng Oilfield, the influences of permeability, plugging degree, plug removal agent concentration and injection volume on plug removal effect through orthogonal experimental method in this paper. The...

The source region of the Yangtze River,Yellow River and Lancang River is the one of the most important ecological area around the world which have significant impact on the watershed. Since the related River is the mother river of Chinese, the air quality at the source region is more important than other...

with the development of wind power industry,the numberof wind turbines connected to grid is increasing,so the inevitable question follows,especially the fault information.In view of the difficulty in locating the accurate position of wind turbine failure,a new wind turbine fault encoding method is proposed...

To solve the problem of Back Propagation (BP) neural network easy to get in local least value and the initial weight is chosen randomly, Principal Component Analysis (PCA) and Genetic Algorithms (GA) were introduced to the BP Neural Network to achieve their complementary advantages. Based on the BP neural...

Principal Component Analysis (PCA) is a main approach based on the second order statistics. It can remove the correlation between the signal components. PCA has been widely used in blind source separation and received attention because of its potential application in signal processing. PCA’s principle...

This paper analyzed the distributions and transfer processes of Cd, As, Cr, Pb, HCH, Hg and PHC in Jiaozhou Bay 1981. In according to the contents, horizontal and vertical distributions, and seasonal distributions of these pollutants, their water quality conditions, pollution sources, as well as the...

Based on the investigation data on Cd in Jiaozhou Bay in May, September and October in 1983, were analyzed the horizontal and seasonal distribution, vertical variation and variation range of Pb, revealed the seasonal variation process, settling process and water’s effect of Cd. Results showed that Cd...

Based on the analysis on the content and spatio-temporal distribution of volatile phenol, this paper assessed the pollution level, pollution source and source strength of volatile phenol in Jiaozhou Bay 1983. Results showed volatile phenol contents ranged from 0.50-3.38 g L-1 in the whole year, and were...

At present the nonstandard power quality monitoring systems have caused many problems such as high construction and maintenance cost and poor interoperability. In order to implement a standardized power quality information platform for multisource information fusion, IEC 61970 and IEC 61850 are designed...

Shengli lignite (SL) was thermal dissolved (TD) in a toluene/ethanol mixed solvent and the dissolved matters was further analyzed with gas chromatography/mass spectrometry (GC/MS). 15 arenes were detected and their structure were identified by GC/MS. The analysis of these high-valued arenes from soluble...

The paper studied a forecast method of geo-hazards in mine area, by use of grey model, it is expected that in 2020, the loss statistics of mine geo-hazards in the area will increase steadily, the loss of water-inrush, slag, ground subsidence and landslide collapse will reach relatively 381,723 dollars,...

The accuracy of fault detection is helpful to improve the stability of power quality. With the development of new energy, the technology of flexible HVDC transmission has been gradually mature, but there are still some problems. In this paper, the Mallat algorithm is used to detect the DC line fault...

Shell side heat transfer and flow resistance characteristics of the spiral elliptical tube heat exchanger and smooth tube heat exchanger with segmental baffle were investigated using CFD method. Basing on this investigation, the appropriate applications of spiral elliptical tube heat exchangers were...

With the development of industry, the large-scale exploitation and use of fossil fuels, especially coal, oil and natural gas, cause serious impact on the environment. Therefore, the development of renewable energy has become an important way to solve the problem between energy and environment. Solar...

Wireless energy transmission technology is an important research field in recent years, and has a good research value and application prospect. Wireless energy transmission technology: short electromagnetic inductive coupling transmission technology, medium range of electromagnetic coupling resonance...

Shale gas reservoirs have become the focus of considerable attention as primary energy resource over the past decades worldwide. Numerical modeling technique plays a critical role in providing the essential tools for evaluating and managing the development of such complex systems. Gas flow in shale formation...

The current smart grid architecture, which has two-level data centers and two-level operation applications, is faced with many deficiencies. In order to solve these problems, this paper puts forward a distributed system architecture based on IEC 61850 remote terminal unit (RTU) data transmission scheme....

To master internal performance and design method of 2D-CD nozzle,the internal performance of 2D-CD nozzle was investigated by numerical simulation method.The influence of circular-to-rectangular transition duct outlet area to inlet area ratio and circular-to-rectangular transition duct length on the...

In this paper the whole design method of an integrated bump inlet with an S-shape diffuser at its design Mach number 1.7 is presented. The model of the intake system with airframe is established based on the aircraft's flight task requirements. Then CFD analysis result indicates the low-momentum boundary...

Unpaved road and road surface regolith are taken as the research objects in this study, 15 main roads in production and construction projects in Shannxi Province and Inner Mongolia Autonomous Region were investigated, road simulate and artificial rainfall experiments were carried out. The results showed...

Surface soil moisture is a significant parameter in environmental systems. A new sensor capable of estimating surface soil moisture from reflection data is presented, called near-infrared reflection sensor. Relative reflectance method is used for prediction model development. The present study investigated...

A series of numerical simulations had been conducted on nozzles with different divergent geometrical parameters, and each nozzle’s flow field had been simulated under different working conditions. The effects of divergent angle and divergent wall length on nozzle performance had been analyzed. The results...

Maintaining the resilience of transportation system is crucial for the overall sustainability of a city. As a complexed system, the city road system can be modeled as networks. Studies investigating the relationship network structures and functionality provide a novel perspective to investigate the robustness...

The prior problem of ecological residential community's construction and development is site selection. The article starts with relevant concepts of ecological residential community, with site selection problems as breakthrough point; it analyzes site selection's environmental requirements from both...

A rapid nozzle performance analysis methodology and project for two-dimensional convergent-divergent nozzle have been developed. A one-dimensional isentropic flow model is employed to calculate the parameters of nozzle internal flow field. And the skin friction coefficient is used to correct the non-isentropic...

With middlings of TBS underflow from Shanxi serving as sample, recleaning experimental study was conducted in order to improve the recovery of coke. Lab single-cell flotator was used as the main separation device. The ash content of sample was 17.84%, collecting agent dosage and pulp density were separately...

For the problem that prediction of coal ash fusion characteristics of blending coals for gasification,using genetic algorithm (GA) to optimize BP neural network on two aspects. Firstly, optimizing hidden layer nodes by binary coding,and getting the best optimal topology of network.Then using real encoding...

Reactor pressure vessel (RPV) is exposed to deadweight, pressure, heat expansion, seismic load, pipe loads and etc under operating , accident and hydrostatic test conditions. Due to geometric discontinuity, the nozzle belt is reluctant to stress concentration, which is the key part in structure analysis....

Biological soil crusts serve as a vanguard for improving the ecological environment in arid, semi-arid desertification areas. It is a good indicator of the improvement status which the local ecological environment is undertaking. This study was completed in Yanchi in Ningxia province and Dengkou in the...

In this work, chitosan/graphene/TiO2 (CS/GR/TiO2) composites for the removal of Cr(VI) was prepared and characterized by FT-IR, XRD, Raman spectroscopy, TEM, SEM and N2 adsorption-desorption measurements. The composites could retain large specific surface area of graphene, the mesoporous structure of...

The energy managment standards specify in-factory rules of operation control,measurement and recording keeping, and maintenance and inspection points and frequencies of energy using equipment for purpose of improving energy saving. However, it is the researches on energy standard that have been neglected...

This paper presents the preparation for phase change materials(PCM) with different phase change temperature for use in refrigerated transport equipment. The optimal preparation condition of HSD-1 as the PCM was confirmed. The thermo-physical properties of the modified HSD-1 were investigated by cooling...

This paper reviews the recent development of phase change cold storage technology for food cold chain application. According to the application field of cold chain, developments of phase change cold storage technology in cold storage and low temperature transport are introduced separately, such as hold-over...

Waste rock and tailings of a mine generate acid mine drainage due to oxidization during long-term stacking, and this may cause serious harm to the environment. 1-year-old, 5-year-old, 10-year-old and 20-year-old waste rock of Dexing Copper Mine are chosen in the experiment for acid generation research....

For further research on microscopic pore characteristics and its geological accumulation significance of coal bed, coal samples from drilling holes of Baode, Shanxi province in China were collected to perform scanning electron microscopy (SEM), mercury injection and low-temperature nitrogen sorption-desorption...

Three commercial wood activated carbons for air purification were selected for static adsorption/desorption of formaldehyde. The influence of the pore structure, surface functional groups and particle size of the activated carbon on the static adsorption of formaldehyde, and temperature on the desorption...

In this paper, the power system blockset in Matlab/Simulink is applied to build a one-machine infinite-bus system to simulate the actual power system. The power system static stability will be discussed according to the severity of disturbance. Also simulation analyses and improvement measures will be...

In order to analyze the relationship between structural characteristics and toxicity of aniline and phenolic compounds in leather chemicals, the molecular connectivity indices, the molecular shape indices, electrical topology status relationship indices and electrical distance vectors of 36 kinds of...

The morphology of the natural sand in the southwest of Buguli desert, Xingjiang, China, has been studied to determine the sand-mass flux of the wind-sand flow, sand particle size distribution and morphology distribution. The results show that, when the average wind speed is 6.7m/s 2 m high from the ground,...

To ensure wheel body of the hoisting sheave strength and stability condition. For the purpose of wheel body lightweighting. There are two schemes to reduce body weight.Reduce the spokes at the same time increase the ring stiffened plate, and reduce the spokes at the same time change the spokes width...

Using three-dimensional simulation software AVL FIRE establish a direct injection diesel model.Analyzes the effects of water content of emulsified diesel on the combustion progress of diesel engine.The results showed that with the diesel water content increasing, the maximum cylinder pressure generally...

Faced with the challenge that resource depletion and environment deterioration, an important energy-saving measure by enhancing electric motor efficiency has been adopted around the world. With the development of measurement uncertainty of electric motor, for conventional motor efficiency evaluation,...

Natural gas is a vital component of the world's supply of energy and a clear energy. Underground natural gas storages are underground facilities for storing natural gas. Optimization on tubing sizes for preventing corrosion in underground natural gas storage well is mainly to prevent erosion. In order...

The model of lighting direct strokes on 10 kV distribution line in Guangzhou was built and the transient procedure was considered based on the software of PSCAD/ECTDC. The effect of arrest and ground resistance operating maintenance on lightning overvoltage in distribution networks has been discussed....

With the current distribution network automation construction gradually promotion, distribution automation terminal large-scale applied in various regions of the country power grid. In the maintenance of distribution automation terminal operation, many problems was discovered to be widespread, such as...

The changes of underwater level have great impacts on the seepage field and the stability of reservoir landslide. The permeability coefficient is the principal factor that impacts on the changes of underwater. Based on the landslide in Three Gorges Reservoir area, the computing model was established...

The reservoir landslide stability is closely related to the fluctuation of reservoir level. The main influence factors are fluctuation rate and permeability of landslides. The landslide was chosen as the research object in the three gorges reservoir area, and studied the changing characteristics of stability...

As one of the most important components of the wetland ecosystem, microorganisms play an important role in all kinds of ecological processes. Those ecological processes of wetland microorganisms are mainly represented by elements cycling, material transformation, energy flow and ecological restoration....

In summer and in winter, the outdoor air will flow in room through the gap of building. Which will influence the indoor flow field and thermal environment and cause draft, the human in room will feel uncomfortable. This paper use the method of numerical simulation to research the effect of outdoor air...

The buried pipeline leakage has tremendous impact on the surrounding environment, while crude oil migration and residues of contaminants in the soil porous media law is an important basis for the detection and elimination Considering the characteristics of oil multiphase flow in porous media, we establish...

Purpose To establish a practical, fast and accurate identification method of tortoise shell, falsify amplified polymorphism DNA (RAPD) randomly and provide reliable basis for identification of tortoise shell. Method We use the Alkali cracking method to extract mitochondrial DNA from the tortoise shell...

The Third mining area 33073 roadway of Zhaozhuang Coal Mine is a large section and broken coal roadway, after tunnel excavation, the emergence of large deformation surrounding rock phenomenon. By using simulation software roadway FLAC3D original support scheme simulation analysis, we found the original...

Ground stress is the most primary stress in earth's crust and not disturbed by engineering. In underground engineering, the fundamental cause of the deformation of surrounding rock is the influence of ground stress after the roadway excavation. Ground stress testing can provide basic design parameters...

Hongyuan Coal Mine belongs to low gas permeability coal seam, its permeability coefficient is lower than 0.1m2/(MPa•d), so the gas extraction will be difficult to do and the efficiency of extraction will be low, underground gas extraction has been using polyurethane to seal hole and this method exits...

Guanzhong traditional residence is involved in the traditional residence of North China, whose space layout is still traditional courtyard layout of China. Due to the impact of geographic position, culture, religion, life style and customs, traditional residence in Guanzhong is equipped with the space...

Based on the introduction to the concept and calculation method of tourism ecological footprint, the tourism ecological footprints of 8 minority autonomous prefectures in Yunnan province are calculated and analyzed according to the data of the statistical yearbooks of Yunnan province in 2014. The results...

We developed a model for algal growth simulation considering flow disturbance, temperature, light intensity and nutrient concentration. Jinshan Lake, a typical river-connect lake at the middle-lower reaches of the Yangtze River, was selected as the research area. According to the simulations on the algal...

Evapotranspiration is the largest component of water loss from storage and has a major influence on all hydrological processes. Based on meteological and hydrological in the upper reaches of the Jinghe River basin, Advection-Aridity model was applied to estimate the actual evapotranspiration from 1966...

Slope cropland and terrace are common land use types in Danjiangkou reservoir catchment areas and indoor artificial rainfall simulation methods are employed to study nutrients’ loss law of the two soils under different rainfall intensities, for the layout of soil conservation measures in farmland and...

By carding the researches of health evaluation methods of domestic urban ecosystem, this paper discusses the principles, methods and revealed problems of urban ecosystem health evaluation, in order to providing reference for the building and evaluation of urban ecosystem health evaluation system.

Slope-gully system is the basic unit not only to study erosion and sediment yield but also to configure the measures in watershed. Based on the rainfall simulation experiment, the temporal - spatial distribution characteristics of sediment yield were studied in slope gully system. The result showed that...

Nine combinations of illite (0,5,10g•L-1) and cadmium (0,2.5,5mg•L-1) were set, and the hydroponics was adopted in this experiment to explore the effect of illite on the rice growth characteristics under Cd stress, including chlorophyll content, net photosynthetic rate, plant biomass, and the antioxidant...

As more foreign direct investment (FDI) inflows to pollution intensive industries in China, policy makers become concerned with the environmental problems causing by FDI. Because of environmental regulation in different regions can be formulated with different strength, whether or not environmental regulations...