In this paper, the influence of circulating cooling water temperature and ultrasonic treatment on scaling process is investigated by using the experimental platform of fouling dynamic monitoring, and the change rule of fouling thermal resistance and scale inhibition rate are defined. In the process of...

AC-DC electrified locomotive and AC-DC-AC high-speed locomotive are two major electrified railway traction load type, and different types of loads can cause different effects to the power quality of electrified railway traction station. Based on power grid monitoring data of different electrified traction...

With the rapid development of Shanxi electric railway, the harmonic problem is also more serious. In order to analyze the harmonic problems caused by the new Loufan traction station. In this paper, the main electric locomotive to simulate is SS4G in Loufan traction station. The simulation and test results...

Along with the ever-increasing R&D of new-energy cars, the embedding of autonomous vehicle operation system, and the application of Big Data and time-sharing technology, the time-sharing lease mode of new-energy cars rises in China. This new model is helpful to promote the efficient car utilization and...

The purification capacity of SO2 and Pb for plants is the basis of the ecological rehabilitation of SO2-Pb compound pollution with plants.The experiment studies the purification capacity of Platanus orientalis on SO2 and Pb by field sampling. The results show that the purification capacity of Pb is strong...

This work introduces tow solid-state 13C Nuclear Magnetic Resonance(NMR) methods, cross polarization- total suppression of sidebands/magic angle spinning (CP-TOSS/MAS) and direct polarization/magic angle spinning (DP/MAS), for detecting chemical structure of coal combustion emissions. The CP-TOSS/MAS...

A new kind of experimental equipment has been established to prepare for making a study on the heat transfer of jet impingement when quaternary mixed nitrate will be regarded as working fluid. In order to verify the validation of experimental equipment and method, a experimental study on the heat transfer...

A real time control strategy based on sensitivity analysis is proposed for voltage regulation in active distribution network with perfect measurement and communication infrastructure. Based on distribution network direct power flow algorithm, a simplified calculation method of voltage sensitivity is...

New high voltage watt-hour meters have the advantages of high precision measurement, low power consumption, information intelligence, etc. which are selected in more and more applications. This paper researched on the power supply of the new metering devices, designed a new power management unit based...

Based on the measurement principle of digital energy meter, the measurement error of the digital energy meter of intelligent substation is mainly caused by the defect of the adopted algorithm, the incompleteness of the received data message and the effective number of the floating point. This paper expounds...

Based on the new advanced oxidation technology activated by sulfate radicals, this work established a promising method on degradation of Methylene Blue (MB). Different effects of operating parameters such as the threshold concentration of sodium persulfate(SPS), initial pH value, coexisting ions and...

With constantly improvement of child education idea, the construction of the outdoor space environment for the kindergarten and the use of it are attracting more and more attention. Kindergarten work procedures which specify "children's outdoor activities of time (including outdoor sports time) shall...

Identifying the main influencing factors of carbon emission change in manufacturing is essential for making sound mitigation policies and boosting China to achieve emission peak early. Classifying manufacturing industry into high-, medium- and low-energy consumption categories, this paper employed LMDI...

Experimental comparisons of coke qualities with and without pitch incorporation during biomass/coal co-carbonization were conducted. Meanwhile, effects of biomass and pitch on the thermoplastic properties of the biomass/coal blends and coke quality indexes, such as M10, M40, CRI, and CSR were also discussed....

The assessment of environmental performance was carried out to identify the environmental impact of three typical solid wood based furniture: A beech wood desk (P1), A white oak-and-fabric sofa (P2), A rubber wood wardrobe (P3). A field research of company's manufacturing plant was conducted in order...

with the progress of the construction of the city, in the face of difficulties in environmental engineering construction, only take active measures, further change ideas, implement scientific management, improve the working mechanism, to solve environmental problems arising from the project construction,...

In this article, Active Disturbance Rejection Control (ADRC) is proposed for the control of the activated sludge wastewater treatment processes. Simulation results show that the dissolved oxygen concentration can track the set value with non-overshoot and short settling time as possible by ADRC. Under...

This paper constructs an index system for the measurement of the transformation performance of resource-based cities, and weight of each indicator is determined as per the expert group decision-making method on the basis of Analytic Hierarchy Process model (AHP). Further,the paper combines tangible indicator...

A large number of urban rivers in China have been heavily polluted, and occurred so-called black-odor appearance. How to treat and dispose these black-odor urban rivers has become an urgent and important issue for Chinese government. In the last few decades, the treatment techniques for heavily polluted...

We have demonstrated a facile and economical method for the synthesis of the sewage sludge-derived carbon. This product was prepared by using poly-aluminium chloride (PAC) as pore-forming agent through high-temperature pyrolysis at 900 , and employed for the removal of phenol from water. Thermodynamic...

During the global warming, the duration of drought is increasing and the impact on forest ecosystems could be further intensified. It is always a concern that diverse forests respond to different duration of drought differently. In this research, the non-parametric Wilcoxon test was used to compare the...

An oil spill model based on MIKE 21 software was established to investigate the oil slick movement if spill occurs during the construction of the navigation channel in Aiwan Cove in Zhejiang Province, China. The model was calibrated with the tidal level and current speed and direction measurements in...

To investigate the feasibility of treatment of pigger wastewater by constructed wetland and to provide the operation parameters for a full scale constructed wetlands to improve the quality of effluent water, a pilot test was conducted with a plug flow constructed wetland to treat dairy farm wastewater...

A distributed hybrid renewable energy system for a household is studied and evaluated based on the data of electrical consumption and renewable energy resources. The hybrid system is comprised of a wind turbine, PV arrays, a biodiesel generator, batteries and converters. The aim of this study is to design...

In order to test the predicting ability of numerical calculating and provide the reliable data for the successive design, this study was designed to trace the particle path in the complete fluidized flow field in the slag cooler according to the characteristic of the gas-solid flow by the Euler-Lagrange...

A low grade oxidized zinc mine of Lan ping contains 6.52% Zn with a high ratio of oxidized zinc ores and a little sulfide minerals.In order to utilize this kind of ore,the test treats oxidized zinc ore as a kind of valuable mineral and an experimental study on beneficiation is carried out in which the...

We use Monte Carlo method to analyze the unreliability performance on the neutron detector system in nuclear reactor. We make the simulation models of three exterior reactor neutron detection channels including source range, middle range and power range measurement channels, and the corresponding three...

The development of renewable energy such as wind power has been widely concerned. However, the randomness and intermittency of the wind power as well as the lack of transmission capacity result in significant amount of wind energy curtailed. Meanwhile, the demand for large capacity battery is expanding...

The field mill is always used to measure the electric field with charge at present. In order to get accurate measurements results, the field mill must be used belong with the ground plate system. The influence of the ground plate area on the measurement result has been researched by the simulation and...

The absorption characteristics of formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde and valeraldehyde by Schefflera octophylla and Chamaedorea elegans were investigated at the laboratory simulation environment of short-term exposure to different CO2 concentrations. Under normal circumstances,...

Objective: To explore the application effect of early ostomy closure on the patient with necrotizing enterocolitis (NEC). Methods: From January 2012 to March 2015, 23 infants with NEC which had been performed ileostomy were treated with early ostomy closure and normal ostomy closure in the First hospital...

To better understand the characteristic and speciation of PM2.5 pollution in US, three American cities (including Taft; St. Bernard; Chase) were selected for monitoring in Cincinnati, Southwest Ohio from 2003 to 2013. Chase has similar levels of PM2.5 and speciation as Taft. St. Bernard both had higher...

This paper has utilized the recycled fine aggregate generated by Zhenzhou South 4th Ring Road Construction Waste Treatment Plant as the raw material to replace the natural sand. By adopting a new determined method of mortar mix ratio, through the determination of compressive strength of 108 cube mortar...

Baitapu River is an important tributary of Hun River and a typical city river in northeast China. Analysis of cheometrics date of water quality and environmental heterogeneity was used in 17 monitoring sites consisted of 12 water-quality parameters from 2012 to 2013. Spatial and temporal variations in...

In this paper, doubly-fed wind turbine generator and direct-drive wind turbine generator dynamic model were built in the State Grid Simulation Center and a grid model include wind power was built in laboratory, various types of grid fault tests were carried out and in-depth studied. Through research...

A pot experiment was carried out to study the effects of intercropping on zinc (Zn) uptake of maize and sweet potato seedlings. Intercropping with sweet potato increased the root biomass of maize seedlings, but reduced the stem, leaf and shoot biomasses of maize seedlings. Intercropping with maize increased...

The researchers think more about the control factors except themselves, and ignore their own psychological factors in the aspect of water-saving. From the perspective of psychology, the paper discusses the Chinese college students about the group psychological factors, the popular psychological factors,...

Aiming at the characteristics of ilmenite ore with a low grade, fine disseminated grain size and containing plenty of mud in Kunming Yunnan, the mineral properties of the ore samples in this area were analyzed and exploratory experiment of mineral processing were researched in this article. The results...

The theoretical calculation formula of the power frequency electric field around the high voltage AC transmission line is improved through the research, and comparing the calculated results with the measured results of the 500kV UHV AC transmission line which has been built, the improved theory between...

Risk evaluation involves not only the natural characteristic of hazard, but also the socioeconomic properties of the vulnerability. Therefore risk evaluation is a complicated but important scientific problem. According to the analysis of the developed characteristic, forming condition and influent factors...

To solve the disadvantages of pressure relief devices in water supply system such as pressure relief valve and throttle orifice plate for high fault rate and high operation costs, the new type of the annular tube device was proposed, which has the advantages of simple structure, high reliability and...

A high-order nonsingular terminal sliding-mode observer is presented for rotor flux of induction motors based on field oriented control systems in this paper. A terminal sliding-mode manifold is chosen for the observer and the nonsingular control laws are utilized to stabilize the observer. The high-order...

Using a microcomputer differential thermal balance, oil pyrolysis experiments on oily sludge samples were researched at different heating rates. Pyrolysis reactions with heating rates, temperature and time were analyzed. Their combustion calorific values were obtained through calorimetric experiments...

the social development also brings a series of environmental crisis, the haze of human health, life, work has brought serious threat. In this case, this article through the analysis of domestic and international research status, combined with the suburban counties of transference, from encircling the...

The technology of abrasive jet assisted drilling has the advantages of high efficiency and low energy consumption, which causesits wider application in the field of offshore oil and gas exploitation engineering.This paper used fluid analysis software to simulate and analyze the movement of abrasive jet...

Energy Internet is a kind of new type information-energy fusion "Wan" which is constructed with Internet concept, based on open structure, trend hierarchical classification. User Side Internet of Energy, namely energy local area network, that is to establish the cooling heating power supply mode mainly...

DTA/SDTG and DSC techniques were used to study the thermal behaviors of citronellol- -D-glucopyranoside (CGLY) . The heating rate was 5, 7.5, 10, and 12.5 K min-1, the samples were heated from 30oC to 500oC. Methods of Friedman and Flynn-Wall-Ozawa were applied to calculate the parameters of thermal...

The demand response pilot work of China has achieved remarkable results in Jiangsu, Shanghai, etc. However, there still hasn't a unified business process being made, and the participation of diversified market subject such as new electricity retail sales company has intensified the market competition...

The increasing level of material life has accelerated the speed of the upgrading of the furniture industry products. However, the idea of green ecology and sustainable development has been advocated by more and more people. Therefore, furniture recycling design will be the future development trend of...

Based on the analysis of difficulties in industrial ecosystem construction, and the advantages of university to conquer the difficulties, this paper proposes the role theory framework of university in industrial ecosystem construction. The theory framework considers that giving full play to university...

In order to accurately diagnose the fault type and location of CNC machine tool spindle, aimed at XKA714 CNC milling spindle's vibration characteristics, the article Uses the test analysis methods, Analyzed the Frequency characteristics of spindle system, and Achieved the vibration signal and vibration...

In view of the problems of the randomness and fuzziness that in the process of the evolution of ecological security, in this paper, proposed a comprehensive analysis model based on NC (normal cloud) –AHP. The regional ecological security index system was constructed based on the ecosystem state, ecosystem...

In order to improve the concentration and pumping volume of gas control drilling hole in the cross-cut uncovering area, reduce the pre-pumping time of outburst coal seam, principle of broken coal based on high pressure water jet, the mechanism of high pressure water jet punching to relieve pressure and...

In this paper, through the Xinji a mine surface drilling borehole pressure relief gas for practical investigation and study, analysis of the layout of the ground drilling, the influence scope of ground drilling drainage is investigated and analyzes the drainage effect and the economic benefit brought...

In this chapter, a load forecasting method considering demand side resources is put forward. This method focuses on the analysis of the influence of demand side resources on load forecasting. By estimating the potential of various types of demand side resources in a certain area .Taking into account...

There are time-varying parameters within the performance index function and dynamic model of home energy optimization (HEO) which contains thermostatically controlled appliances (TCAs) and electric vehicles (EVs). And TCAs and EVs may be off-line. Adaptive dynamic programming (ADP) can not be applied...

The construction management of water conservancy project, with characteristics as wide range and multi-field, includes construction process management measures and completion inspection and acceptance management. There are a series of problems in the construction management of water conservancy project...

To cater for the demands to desktop meal-assistance robots, the paper designs a meal-assistance bluetooth-controlled robot which applies the wireless, embedded S3C6410 as the processor with ARM11 as the core, realizes voice interaction, foot-switch control and other functions through transplanting Linux-2.6.36...

According to the direction of seismic record synthesis method, currently there are two methods of seismic record synthesis. One is synthetic seismic record production along the well trajectory and the other is along the TVD direction. However, in case of a large stratigraphic dip and well deviation,...

With the deepening of the new round of electric power system reform process, the provincial Power Grid Corp will be under the new electricity reform policy proposed the corresponding reform program. This paper first analyzes the background of a new round of electricity reform and the current situation...

The development of the adsorption refrigeration technology was relatively slow, and the COP of the adsorption refrigeration system usually indicated as 0.2 to 0.3 only in experimental reports. The lower refrigerating efficiency (COP) of the adsorption refrigeration technology has become the bottleneck...

Based on historical background of Meishan area and ancestral hall stages in Meishan, this paper investigated the Lei family's ancestral hall stage in Changtang town, Anhua county as a typical case, analyzed its architectural form and characteristics of decorative art, and discussed its value and significance...

A method was developed for soil erosion image segmentation based on improved K- means clustering in order to solve some problem with the traditional K-means clustering method. First, the peaks was detected in the smoothed histogram of a gray-scale image, and sort peaks in descending order; then the number...

Based on SBR we discussed on biological removal phosphorus system. In the reaction temperature at 15 and 25 under the conditions of influent COD/TP ratio and COD load of sludge. Total phosphorus concentration of influent was be constant for 10 ± 0.5mg / L, compared to anaerobic paragraph at the end of...

Grassland is one of most important ecosystems in northern China and is threatened by strong land use pressure and poor protection. We selected central Inner Mongolia as a study area to explore spatio-temporal change of grassland distribution in the north of China. Obtaining land use data from remote...

Western China is confronting two urgent problems, rural poverty and environmental deterioration. The development of renewable energy boasts great potential to solve these two problems. In addition, developing renewable energy in rural areas of western China may result in several benefits, including meeting...

In this paper, mainly through questionnaire's form, the citizens of Beijing to understand the degree of attention and cognitive haze of pollution control proposals, according to the degree of the pollution in Beijing City, with reference to foreign successful management experience, put forward relevant...

Aiming at ice accretion on wind turbine blade causes power production loss and affects its normal performance safety, a novel hot air blower de-icing technique for blades was researched. The numerical simulation for the whole profile of blades was applied, and flow distribution of the blade and heat...

Under the background of global change, the internal relationship between forests' age and forests' carbon cycling is very important to study the position and function of forests in the global carbon cycle.Thus, the study employed field observations to inversely estimate the parameter of maximum light-use...

To explore how to prevent and control rock burst of mining under the overlying magmatic rock, the 1061 working face in 106 mining area in some mine is taken as engineering background. The mining area is overlaid by three thick hard layers of magmatic rock, which lead to rock burst phenomenon. After the...

Firstly, the graphite oxide was fabricated with the modified Hummers' method, and then it was dispersed in an aqueous solution along with TiO2 nanoparticles. The graphite oxide was peeled off by ultrasonic method and graphene oxide (GO) was obtained. The abundant functional groups on the GO surface make...

This paper starts with constructing the optimal process of shale gas economic indexes through selecting suitable statistics and prediction methods to confirm the major evaluation parameters of shale gas, such as single well recoverable reserves, single well composite cost and gas price. Then, economic...

The process of gas-liquid two-phase flow of an IC anaerobic reactor (25L) was simulated by fluent software. Inner Cycle Flow Rate (QIC) under different volume loading rate(OLR), ratios of riser diameter to reactor diameter(Dr/D), ratios of reactor height to diameter (H/D) were investigated respectively....