A function verification method of multi-area AGC coordinated system is proposed in this paper. Based on the power grid model of testing platform, the external multi-area AGC simulation system is build. A joint simulation system is formed by the simulated AGC system and the tested AGC system, which covers...

This paper mainly uses literature survey to summarize the concept and connotation of ecological sports from different scholars and the related concepts of ecological sports. First, it describes the application of ecological sports in Olympic, school sports, Chinese traditional sports and outdoor activities....

A method on the remote precise positioning based on the GPS technology for transmission line inspection robot of is proposed. The functional requirement and construction of remote monitoring system, which monitors and controls the inspection robot walking and crossing various obstacles with wireless...

The structure of mechanical and control system for power transmission line inspection robot was introduced. Then a new control method and its real-time implementation based on expert system were presented. A rule-based expert system for distributed coordination algorithm was proposed. By using CLIPS...

The problem of excessive use of pesticide and chemical fertilizer in China has received attention in recent years. Based on statistical data, the comparative analysis of the application rates of fertilizer and pesticide were carried out between China and typical developed countries, to illustrate the...

The rotary hearth furnace iron nugget process has advantages of short reaction time and high quality product. Using semi-coke, bituminous coal, anthracite, charcoal and coke as raw material, effects of reducing agent species on reduction and melting separation of carbon composite pellets were studied....

Phase unwrapping is a key step of interference synthetic aperture radar (InSAR) signal processing, while the existence of some factors such as the noises and the lack of data sampling makes this process extremely difficult. The least square method is the fastest way to unwrap, and there is no region...

The collapsibility test in field can have several times to tens of times of error with computed results. The writer's purpose is to find the regulation of the develop of loess' collapsibility, a field test was completed, the writer also gave a formula to forecast the relationship between immersion time...

It is utilized the pot experiments to investigate physiological and biochemical indexes as well as the characteristics of the accumulation of uranium of Sorghum bicolor´S.Sudanense. under the different uranium concentrations (0,1, 5, 20mg/kg) stress. It shows that photosynthetic pigment and soluble protein...

According to China's new energy large-scale centralized development which brings some problems, such as: resource monitoring, electric power forecast, cluster modeling, active / reactive power / security and stability of the coordinated control and demonstration project construction, design and development...

Siraitia grosvenorii (Luo hanguo, LHG) is a unique edible and medicinal plant in China. Drying the LHG with a rapid, highly efficient method and keeping good quality are urgent problems. In this paper, the changes of Vitamin C (VC) content in LHG under microwave drying were studied. The effects of key...

Nano-ZnO is a typical engineered nanomaterial, which is used in many fields. With its mass production and wide application, more and more nano-ZnO discharge into the water body. Water ecological environment is facing a huge threat. This article summarizes the toxic effects of nano-ZnO on different types...

Recently CO2 emission reduction has become an imminent problem, iron and steel industry, as the third largest CO2 emitter industry, is vital for energy conservation and emission reduction in China. Accurately quantifying CO2 emissions is the basis for energy-saving and emission reduction of the iron...

Facing the fierce market competition, more and more enterprises are focusing on product logistics. As an important link in the logistics system, warehouse management is under great pressure. In this paper, AHP is used to evaluate the warehouse management, and the evaluation value of each index is given.

Blueberry anthocyanins are the major active ingredients of blueberry with a variety of biological activities and have widespread applications in the fields of drugs, cosmetics, food additives and so on. However, the instability of blueberry anthocyanins is a big obstacle for their usage. Improving the...

A new single-phase of the harmonic current detection method and compensating current control method are presented in this paper. It’s a simple algorithm and achieve more，fast response and real-time. This detecting method is fit for t single-phase parallel active power filters. The simulative result shows...

Based on the analysis of the frequency modulation capability of conventional wind turbines and wind turbines, this paper proposes a new type of frequency control strategy for wind farms, which is based on the layered architecture. By means of reserve control, it can provide fast active power support...

Reducing the energy consumption of villages and towns and raising their energy efficiency is one of the priorities for the development of sustainable buildings in China. This article takes the village and township houses in hot summer and cold winter zone as the research object. Based on the analysis...

The Cu2-xSe nanopowder was synthesized by the hydrothermal method. The electrical transport properties of Bi1.975Na0.025Ba2Co2Oy + xwt% Cu2Se (x = 0.00, 0.25, 0.50, 0.75, 1.00, 1.25, and 1.50) ceramic samples prepared by the solid-state reaction method were investigated from 300 K to 898 K. The Cu2-xSe...

The paper presents a new type of remote fault diagnosis system of electric locomotive, which aiming at the problems and defects of traditional fault diagnosis technology of electric locomotive. The new system links electric locomotive host with ground repair center by using the mature 4G wireless communication...

Although the Intergovernmental Panel on Climate Change (IPCC) suggests that the net damage costs of climate change towards countries are likely to be significant, it remains a challenge in evaluating a country’s fragility and measuring the impact of climate change, in a less-subjective manner, since...

It is of great significance to understand the rule of soil infiltration to develop and better use of land resources or guide the agricultural irrigation. The grass infiltration apparatus is used to test the soil infiltration under different land uses, including grassland, woodland and vegetable land....

The redevelopment of abandoned coal mine land and the creation of recreation space in cities are two significant elements for fostering urban more sustainable development. This paper presents an systematic perspective on plan strategy making, and examines how Jingxi ACML recreation system may combine...

Melamine can be introduced into environment via various industrial effluents, thus it is necessary to develop suitable analytical methods for determination of melamine in environmental samples. In this work, magnetic graphene oxide (MGO) was synthesized and used as the adsorbent for solid phase extraction...

Because of the toxic effects of nickel on human health and ecosystem, it is necessary to detect trace nickel in aquatic environments. A new method was proposed for the detection of trace nickel in water, by high performance liquid chromatography with diode array detection (HPLC-DAD) after dispersive...

The spatial distribution characteristics of human activity intensity in Libo county are studied in three aspects, including the total distribution characteristics, the distribution characteristics of each township and the spatial autocorrelation analysis based on the calculation of the human activity...

In this study, X-ray photoelectron (XPS) was used to investigate the sulfur existing forms and transformation of dewatered sewage sludge which collected form a wastewater treatment plant using A2/O process in different seasons. The S2p spectra obtained curves were resolved into 6 peaks: sulfate-S(170.0±1.0...

Since the number of electric vehicles is increasing rapidly, there is urgent need to nurture this emerging industry’s business ecosystem. The livelihood of an EV business ecosystem is important to different ecosystem participants: industrial participants, government agencies, industry associations, customers,...

Based on the ideas of risk classification and hierarchical supervision in risk management, the paper divides enterprises into several levels according to enterprise risk and other relevant factors, and establishes an index system of enterprise risk class evaluation through carrying out the work of expert...

Separator is an essential component of battery between anode and cathode, but the commercial micro-porous polyolefin separator can hardly satisfy the continuously increasing battery energy densities due to its poor mechanical stability, low wettability, and limited electrolyte uptake. Poly(vinylidene...

The vibration analysis model of slab mill is established in this paper according with the multi-body dynamics theory. The relationship between the vibration displacement and time of the roller in different conditions is obtained through simulation analysis. Under different damping conditions, the vibration...

Applying the multi-dynamic theory, a dynamic model of the upper-equipment mounting system of some vehicle is established. An optimization model for the upper-equipment mounting system is constructed, in which the driver's vertical acceleration RMS value and upper equipment vertical acceleration, pitch...

For the sake of characterizing composite lightning strike coupling damage, based on the method of continuum damage mechanics (CDM) and phenomenological analysis, stiffness matrix progressive damage degradation model of composite laminate structure with lightning strike ablation damage and mechanical...

The all vanadium flow redox battery (VRB) has been widely studied and is one of the most compelling storage technologies. Here, A new channel structure, that is, a composited arched flow channel, is presented and compared with rectangular, serpentine channel. Numerical simulations are used to study the...

A sample-and- hold circuit for a resolution pipelined ADC is presented. The circuit uses a fully differential capacitor flip structure to reduce power consumption. Increase the gain by using an olded-cascode amplifier. Based on 0.35μm CMOS process, the Hspice simulation shows that the circuit can work...

Four composite coatings of aluminum, zinc, aluminum zinc and high aluminum bronze were prepared by low-pressure cold spraying technology on 45 steel substrate. Study on microstructure and corrosion resistance of coating by scanning electron microscopy, electrochemical workstation and static immersion....

The purpose of this research is to analyze the molding quality and energy consumption of biomass pellet fuel under three compression methods of uniform speed, uniform deceleration and superposition vibration. This article established a discrete element model of sandy shrub particles uniaxial compressed....

This article describes the design process of a three-phase AC soft-switching static power supply using discrete pulse modulation (DPM) technology. Firstly, the principle diagram of the static power supply of the combined inverter structure is given. The working principle of the main circuit of the soft-switching...

The internal temperature of reinforced concrete members in fire directly influences the stress distribution and attenuation amplitude of performance. With ABAQUS finite element software, it analyzed the change rule about the temperature field of reinforced concrete beams with the development of time,...

In order to study the influence of nitric acid doping on the adsorption of Li on the surface of graphene，the adsorption and diffusion behavior of Li adatoms at three high symmetry sites on graphene and NO3-??'graphene were systematically investigated by the first-principles method based on density functional...

Based on the SBM model and the Malmquist-Luenberger index operation, this paper analyzes the regional industrial growth efficiency from static and dynamic aspects. For static efficiency, the overall efficiency of industrial growth in China shows a trend of decreasing from east to west. The pure technical...

In this experiment, pure nickel, cobalt, chromium, aluminum, and bismuth powders were mechanically mixed for three hours in accordance with a certain ratio of powders. After the coating was formed on the surface of a stainless steel substrate of 310s by low-pressure cold spray technique and analyzed...

Accompanied by China’s New Normal Economy and Chinese social and economic transition. The urbanization has entered a new stage of improving quality and increasing efficiency as the main development, meaning that future urban construction shall not only focus on newly increased lands only, but also focus...

efoperazone wastewater’s composition is complex,of high COD， biodegradability is relatively poor，while TiO2 photocatalytic oxidation method is of high efficiency，safe，non-toxic and simple to operate，which can be used as a treatment method. The effect of hexadecyltrimethylammonium bromide (CTAB) on the...

The solution evaporation in a vacuum is faster than that at the atmospheric pressure, and the required temperature of heat source is relatively low, which can realize the energy conservation. Therefore, it is a subject worthy of investigating. In this experiment, the regeneration process of LiCl solution...

Shale gas is a kind of unconventional gas,but it is difficult to exploit because of the low permeability and porosity of shale.In recent years,with the larger emission of CO2,how to use CO2 to enhanc shale gas recovery(CO2-ESGR)and sequestrate CO2 effectively is a topic of common concern.Besides the...

In order to visually reflect the pressure distribution characteristics and the flowing tracks of reservoir fluid in five-spot horizontal well pattern, this paper obtain the pressure distribution equation of transient flow in horizontal well pattern by means of the potential superposition principle, present...

This Particulate nuclide deposit onto the sea surface will bring radioactive hazards to marine ecological environment, so it is necessary to study the dry deposition velocity of it onto sea surface. In this paper, a model of dry deposition of particulate nuclide onto sea surface is established, and the...

In this paper, the electromagnetic model of Permanent magnet synchronous motor (PMSM) is established by using the RMxprt module self-brought by Maxwell, and the two-dimensional model is generated to conduct the electromagnetic simulation analysis. By using Simplorer as the simulation platform for driving...

The increase of the feed speed leads to severe thermal deformation, which seriously affects the positioning accuracy. Therefore, we take the X-ray feed system for machining center as the research object. Then, by analyzing the main heat source and establish a finite element model, the steady-state temperature...

In the high speed feed system, the temperature rise of the bearing will affect the positioning accuracy, so we design the liquid cooling system to cool the bearing. The cooling system consists of the mechanical module and the liquid-cycle-cooling module. The mechanical module is a spiral groove on the...

In recent years, the construction engineering industry has developed rapidly, and the engineering quality problems have become increasingly prominent, such as the low concrete strength and the cold joints of concrete structures. Based on an engineering example, this paper describes the whole process...

In recent years, the development of new materials is rapid, and the quality of materials brought by it is also obvious. Based on an engineering example, this paper expounds the process of detection, identification and cause analysis of a brick masonry structure, and provides reference for similar project...

Melatonin is a ubiquitous indol molecule and has powerful functions in relieving abiotic stress responses. In our study, we used the kiwifruit seedlings as the materials and investigated the efficiency of different concentration melatonin (50 μM, 100 μM and 200 μM) on protect photosynthesis compared...

Melatonin (N-acetyl-5-methoxytryptamine) is a low-molecular-weight molecule having an indole ring structure and considered as the best antioxidant substances. However, the role of melatonin in low light stress remains unknown. Our study investigated the possible role of melatonin on secondary metabolite...

Melatonin (N-acetyl-5-methoxytryptamine) in plants is to act as an antioxidant providing protection against environmental agents. In our study, we used different concentration of melatonin (control, 50 μM, 100 μM and 200 μM) to investigate the effect of melatonin on antioxidant system under low light....