Increasing insertion of distributed generations(DGs) challenges power grid security. Based on analysis of failure impact delivery which is divided into the counter-flow delivery and the direct-flow delivery, the approach of distribution system reliability evaluation is proposed. Because of no accurate...

Among various biomass, algae have unique advantages such as fast growing, high efficient photosynthesis, no competition with crops etc. Supercritical Water Gasification (SCWG) is a potential technology for converting algae biomass into gases (including H2, CH4, CO, CO2), with merits with higher gas yield...

Doubly-fed induction generator is a multivariable, strong-coupling, nonlinear controlled object. The paper makes a comparative study on two decoupling control methods based on vector control and Internal Model Control theory for decoupling voltages of DFIG. Theoretical analysis and simulation results...

Manganese-copper bimetal oxide catalysts supported on ZSM5 were produced by incipient wetness impregnation for selective catalytic reduction of NO with dielectric barrier discharge plasma. The significant enhanced activity of catalysts was exhibited with the increasing calcination temperature from 350øC...

The analysis experiment of pharmacy practical instrumental is a very important part of pharmacy practical instrumental analysis course. However, due to the limited equipment, limiting short hours and other conditions, sometimes, we cannot achieve the intended purpose. Micro-lesson is one of the most...

A new synthetic approach to synthesize 2,3-dimethyl -2,3-dihydrofuro [3,4-b][1,4] dioxine-5,7 -dicarboxylic acid from a common precursor diglycolic acid was reported. Starting from the commercial material diethylene glycol, diethyl oxalate and 2,3-dibromobutane, the compound was synthesized through oxidation...

According to the characteristics of pharmaceutical practical instrument analysis course, and combined with the content of experiment teaching as well as the modern multimedia and network technology, to explore a new instrument analysis course teaching model which meets the characteristics of pharmacy...

Currently, the increasing scale wind power paralleling in grid leads the range and frequent degree of thermal power unit regulating system action become larger than ever. So both the units' regulation performance requirements become higher and units' regulation system equipment performance faces more...

The ZnMn2O4 nanoplates were successfully prepared by a hydrothermal method and then a annealing process. The electrochemical properties of the ZnMn2O4 nanoplates as an anode material a reinvestigated for lithium ion batteries. The results shown that the ZnMn2O4 nanoplates exhibited a larger initial of...

Transpiration has an important impact not only on the growth of plants, but also on the hydrological cycle.Determining quantificationally the plant transpiration rate helps understanding the hydrological cycle more accurately. The transpiration rate of a single loquat tree at different relative humidity,...

In this paper, the quantification theory model I based on the theory of multivariate linear regression was used as a preprocessing tool to reduce data dimensionality in 13 factors influenced groundwater quality. Then BP ANN groundwater quality forecasting model was created and 8 important characteristic...

In view of the features of In-wheel Motor Driven EV, Ackermann steering differential model was established by using MATLAB/Simulink. Based on this model,the features have been studied under different steering angle and velocity of four wheels in this paper. The feasibility of differential algorithm was...

With the special legal assessment requirements in the EIA Law in China for environmental effects of the transport plan, some provisions have been made to facilitate the implementation of transport SEA to integrate environmental considerations into transport decision-making process. Following the popularisation...

Liquid droplet size distribution and spray has the direct influence upon the combined trapezoid spray tray (CTST). This paper makes use of experimental tower with the diameter of 570mm and high speed camera to conduct the research on the liquid droplet size distribution and spray of the high speed camera....

The traditional vehicle driving cycle construction method is to use a random method to choose the cycle segments, which is lack of reliability and accuracy. In order to solve the problems of the traditional construction method, an improved methodology for developing a representative driving cycle for...

Urban Heat Island has become a popular issue in recent years due to various problems caused by environment degradations. Many researchers have done lots of efforts to optimize the outdoor environment, including simulation models, field measurement and case studies. There are few studies research on the...

Pullulan is a linear homopolymer composed of maltotriose subunits interconnected with a-1, 6 glucosidic linkages and one of such commercially emerging biopolymers and synthesized by a yeast-like fungus A. pullulans. Pullulan's solubility can be controlled or provided with reactive groups by chemical...

The grain refinement effect and related strengthening of alloying element Sb on as-cast Mg-5Y-3Sm-0.8Ca (wt.%) alloy were investigated by microstructure observation, theoretic calculation and tensile tests. The results showed that Mg3Sb2 phase with high melting point is formed in the alloy after Sb addition....

In this paper, a diffractive optical element(DOE) is designed as a spectrum splitting and concentrating element which is used in lateral multi-junction solar cells. The performance of the DOE by simulation indicates that optical efficiency over 80% can be achieved based on this design. The relationship...

Nuclear power station PI controller board is used for complex nonlinear and adaptive control loop. The board realizes the classic PI control, eliminates the interference of the input signal may be produced. In this paper, alpha-stable noise is introduced into the input end of the controller circuit,...

On the basis of paper reading and empirical investigations, this thesis searches the types of malodor substances, distribution, and causes. Furthermore, the studies of climate and terrain of the area are carried out, including the influence rules on malodor from the seasons and weather so that the influential...

The actuator servo system is an essential part of the missile system, whose characteristics directly affect the missile's performance. An all-digital electromechanical actuator (EMA) system is designed based on field-oriented vector control principle, and its prototype is developed, which has fast transient...

A pot experiment was conducted to study the effects of intercropping with Solanum photeinocarpum and Solanum nigrum from two climate-ecology regions (Ya'an campus and Chengdu campus) on photosynthetic characteristics of eggplant under cadmium (Cd) stress. Five treatments were used in the experiment:...

Temperature rise caused by the loss of long-time working motor has negative effects on the working performance of the motor, as well as its service life and reliability. This article, analyses the calculation method of the motor's temperature rise based on the temperature field theory. On this basis,...

PL oilfield adopts commingled production with big intervals, which causes serious conflict among layers, so layer system and well pattern adjustment of later stage is required, at this time we will need to determine the scope of the reasonable well spacing. Three main pay formations of PL oilfield has...

Daqing oilfield was put into production in 1960. Excellent achievement is acquired. It has maintain the production of 5000ž104 tons / year for 27 years and 5500ž104 tons / year for 13 years. Main technologies adopted in Daqing oilfield include early-stage water flooding for pressure maintenance, separate-zone...

With the better understanding of oilfield and the adjustment of the development modes, real water-flooding development effectiveness of reservoir depends on its basic geological condition, as well as the level of development technology and human factors. It is unable to judge the effect of development...

Experiment was executed to study characteristics of restoring vegetations after Medicago sativa and Bromus inermis planted on the bare land. The results indicated that vegetations restored rapidly after Medicago sativa and Bromus inermis planted on the bare land in Yanqing county, Beijing. And vegetation...

In this paper, we conduct research on the design and simulation of the novel wireless sensor network spectrum allocation algorithm. Cognitive radio technology is able to perceive the general surrounding environment spectrum, spectrum hole detection, the use of artificial intelligence from the environment,...

The reasonable and accurate assessment of the development level of the power grid is very important for a country's power grid construction and power distribution. The domestic and foreign power grid assessment index system, grid comprehensive evaluation methods are summarized in this paper, expounds...

In this paper, we mainly propose a new semi-discrete central-upwind scheme to solve a MCLWR model based on fifth order improved WENO-Z reconstruction and semi-discrete central-upwind numerical fluxes. By introducing the new WENO-Z reconstruction, the order of accuracy of the schemes is improved, and...

In recent years, the Beijing construction in accordance with the philosophy of environmental protection, solid depth to carry out a series of policies and measures, such as rural energy structure optimization and adjustment; rural residential seismic energy-saving; village green landscaping. If displaying...

With the energy crisis and the further optimization of EEDI for new ships from International Maritime Organization, the Sail-Assisted becomes the developing direction of ship in the future. Aiming at the wide application prospect of the Sail-Assisted in the ship, introduces the application of Sail-Assisted...

A proper design of energy storage system (ESS) can effectively smooth the photovoltaic (PV) output power fluctuation, lower the cost, as well as improve power quality and stability. According to the response characteristics of different energy storage equipment, in this paper, a hybrid ESS is applied...

The effect of seasonal temperature fluctuation, organic loading rate shocking and aeration intensity change on the performance of large-scale vegetation-activated sludge process (V-ASP) was evaluated, and effective system regulation measures were proposed. Vegetation characteristics, including photosynthetically...

This paper describes a reactive power control strategy based on the unified power quality conditioner (UPQC). The shunt unit is mainly used to compensate the reactive power based on the active and reactive power decoupling control. Because the series inverter is usually in the bypass switch state, the...

Three gradations of fine iron tailings are selected to prepared surface mortar for external thermal insulation on outer-walls for replacing natural sand. The working performance and mechanical performance of the surface mortar for external thermal insulation on outer-walls are studied. The results show...

A field study was conducted to investigate the effects of gap disturbance on the seedling establishment process of two native species. Seeds of Agropyron cristatumandStipa kryloviiwere reseeded to artificially created gaps in a degraded steppe in North China. There were seven treatments: shoot gaps and...

With the development of market economy, complexity of market environment, strengthening legal supervision, increased operational risk and competition and other reasons, risk awareness has gradually increased in more and more industries and enterprise, therefore risk management is increasingly paid attention...

In the process of reclaimed rubber producing, the desulfurization is an important link of waste rubber recycling. It is directly affect the quality of the recycling reclaimed rubber. At present, there is no good desulfurization way for industrialization. Therefore, how to carry on the desulphurization...

The results of MLA automated quantitative mineralogy system indicated the uranium ore used in this study was mainly composed by pitchblende (0.467%), quartz (64.911%), fluorite (2.177%) and pyrite (0.436%). High content fluorite and low content pyrite mineral were unfavorable for extracting of uranium...

Researches about the separation process of valuable metals for nickel-cobalt ore bio-leaching solution had already been continuously studied, while studies about its thermodynamic properties has not been carries out. This paper conducted research about thermodynamic properties including conductivity,...

In order to ensure the FGD (Flue Gas Desulfurization) system security and reliability, part of the wastewater should be discharge from the FGD system. Desulfurization wastewater with high salinity, high corrosion and other characteristics will lead to water pollution and waste of resources,and it is...

Anaerobic co-digestion of dairy manure and edible mushroom cultivation waste was conducted to produce biogas using batch reactor. Influence of temperature on anaerobic digestion was studied, and recovery ability of bacterial activity after second feed was also investigated. Three temperature conditions...

In this article, the author analyzed the present situation of environmental education and environmental awareness cultivation in both China and the world, expounded the importance of college students' environmental awareness cultivation and presented the method to cultivate college students' environmental...

According to the new energy electric vehicle DC-DC conversion needs to adopt a zero-voltage quasi-resonant flyback converter topology based DC conversion program that will convert DC72V power to low voltage DC12V vehicle auxiliary power supply, simple circuit structure, components used, low cost energy...

Spatial-temporal changes of land use and landscape pattern dynamic of Four Seasons Flower Valley in Beijing mountainous area were analyzed from 2007 to 2013. The results showed that: Regional structure of ecosystems in FSFV was forest-farmland-grassland. Farmland was the dominant artificial type mainly...

In this paper authors carefully research the strategic emerging industries of"manufacturing industry of intelligent equipment of using new energy power generation"through the outlook of Nantong (that is, taking the manufacturing industry development of intelligent equipment of using the new energy power...

Catalyst selection for the catalytic wet oxidation of pharmaceutical sludge was investigated. The selected catalysts include homogeneous catalysts, alkaline catalyst, Zeolite and supported Zeolite catalysts, and metallic oxide catalysts. Experiments were performed at 220 øC for 60 min with O2 initial...

In order to explore the influence of Three Gorges Reservoir (TGR) operation on heavy metal pollution of sediment in tributaries, taking Daning river as a case study area, the variation characteristics of heavy metal distributions (in sections of DC, BSH, CZB, Yangtze River) were investigated, and the...

Calcium hypophosphate is got from sodium hypophosphite and sodium chloride. The internal morphology and composition of calcium hypophosphate particles are obtained by nanometer particle sizer, scanning electron microscope (SEM) and X-ray diffraction (XRD) and also on. The experimental results show that...

Biotechnology, one of the fastest developments in the century, is creating the diversity of opinions and one of the greatest debates emerged in the field of genetically modified (GM) food. Even though the innovation was developed to tackle the world hunger it still represents unknown concept that can...

This paper reviews the properties and hazards of arsenic, the source and hazards of high arsenic tailings, as well as the latest research progress to world abroad on phytoremediation and physical and chemistry repair of high arsenic tailings, and the future prospects of the tailings processing.

To evaluate the improving effects of artificial grassland restoration measures on soil organic carbon (SOC), soil with different depths, 0-5 cm and 5-10 cm, was sampled and three components of SOC, i.e., total organic carbon (TOC) content, water soluble organic carbon (WSOC) content, and hot-water extractable...

Theÿdamageÿofÿovervoltageÿandÿarcÿcausedÿbyÿstronglyÿpullingÿoutÿtheÿmagneticÿswitchingÿinÿtheÿtraditionalÿprocessÿofÿdeexcitationÿmakesÿtheÿdeexcitationÿproblemÿofÿtheÿlargeÿgeneratorÿbe-comeÿanÿimportantÿresearchÿsubject.ÿTheÿtechnologyÿofÿpowerÿelectronicsÿsoft-switchingÿprovidesÿa new way for the...

The degradation kinetics of co-metabolic biodegradation of two linear alkylbenzene sulfonate (LAS) strains was researched. Two bacterial strains which could degrade linear alkylbenzene sulfonate by co-metabolism mechanism, named as L-2 and L-15 were determined to Klebsiella sp.and Enterobacter sp.The...

The existed energy management system (EMS) grid model and fault information is relatively perfect, which realizes automatic synchronization of data in areas I and III. Urban grid fault event management system is designed and developed for this purpose. It locates at safe area III, using data of EMS to...

A wave-current coupled model was established to investigate the interaction of wind-induced wave and current and its potential effect on the transport of materials in Lake Taihu, China. Different wind conditions were considered, and numerical experiments on the transportation of dissolved materials and...

This paper reports an approach to derive the explicit solutions of the dispersion equation of a liquid jet with small viscosity in high velocity coaxial air stream. The dispersion equation, which contains the relationship of the growth rate and wavenumber, is very complex when taking the viscosity into...

At present, the technology of line inspection robot for overhead transmission lines in China and abroad is close to the practical stage. But there are still some problems, such as electromagnetic compatibility (EMC). In this paper, based on the 220kV, 500 kV, 1000 kV and other high voltage transmission...

A energy storage device is essential in photovoltaic power system. The battery charge and discharge is a typical bidirectional DC / DC converter. According to design requirements, Buck/Boost DC/DC has been selected as the main circuit topology. The parameters of components have been set. The method of...

Despite the significant breakthroughs in research on microalgae as a feedstock for biodiesel, its production cost is still much higher than that of fossil diesel. One possible solution to overcome this problem is to optimize algal growth and lipid production in wastewater. The present study examines...

The method of using electromagnetic compatibility standard for nuclear power plant , and the electromagnetic compatibility and electromagnetic compatibility standard of instrument control equipment in nuclear power plant are put forward, by the research on electromagnetic compatibility of nuclear safety...

The reasonable and accurate assessment of the development speed of the distribution network is very important for a country's power grid construction and power distribution. The comprehensive evaluation system of distribution network developed proposed in this paper can be applied to evaluate the development...

Power system frequency control technology plays an important role in the maintenance of the safe and stable operation of power system, and the primary frequency regulation occupies the important position relied on its own advantages. In order to analyze the primary frequency regulation, the definition...

In construction project group, the construction process is numerous, the resources required are multifarious, the resources allocation is difficult, and it is easy to appear resource allocation imbalance within a certain period of time. To implement the balance allocation of resources among varied projects,...

This essay analyses the experiment of xylene, ethyl acetate and acetone as solvent materials influencing the surface resistivity and electromagnetic shielding effectiveness of conductive filler composite material, as well as the main reasons for this difference from the perspective of material properties...

This paper shows electromagnetic induction heating technology advantages and great potential application as a new heat source, which is based on the principle of electromagnetic induction heating technology, application methods and application fields, and combined with comparative analysis of the test....

Separating radioactive wastewater by using high gradient magnetic separator is one of the new technologies. In this paper, using FLUENT software for simulation, effects of the flow rate, magnetic particle size, intensity of magnetic field, and magnetic media filling rate on adsorption was figured out,...

The rapid progress of urbanization in China will be an important event that will affect the economic and social development of China and the world. The development of low-carbon eco city should study the low carbon eco city development strategy, determine the development of low-carbon eco city, follow...

Low utilization rate of transport vehicle for prefabricated construction (PC) components is one important reason of the high transportation cost. On the basis of analyzing the geometrical characteristics of PC components and installation sequence, the vehicle load capability and principles are taken...