There is a high risk of metro foundation pit construction in the soft soil area, where foundation pit kicking occurs frequently. In this paper, by using the material point method, the failure modes and mechanism of foundation pit kicking are studied. Parametric study is performed to further analyze the...

Government procurement introduce the concept of life cycle cost is of great significance. This paper analyzes the government procurement application situation and existing problems of life cycle cost. From the practical level, this paper analyzes the concept of life cycle cost in the government procurement...

When more than one loads act on a structure the combination of stochastic loads is generally considered in the design of the structure Based on the theoretical derivation and numerical calculation analysis to the process of two common loads in Poisson square wave and Poisson impulse this paper presents...

Due to their adverse health effects and their abundance in urban areas, diesel exhaust ultrafine particles caused by the aftertreatment devices have been of great concern in the past years. An experiment of particles number emissions was carried out on a high-pressure, common rail diesel engine with...

Two Lagrangian models are developed for the accurate simulation of advection-diffusion transport in unsteady open channel flows. The first one is based on a second-order partial differential equation (PDE) for pollutant concentration (model I), and the second one is a first-order system with diffusive...

The bridge bearing stress and deformation can eflect the safety of the bridge structure significantly. For bridge bearing status monitoring, identification and early warning technology, in recent years, is an important research direction for structural health monitoring. This paper is based on a model...

Accurate measurement of passengers’ walking speed is significant for evaluating and optimizing service level of the facilities in transfer stations. This paper studies the walking speeds of various transfer passengers on the upstairs of Beijing Haidian Huangzhuang Subway Station during evening peak hours...

In order to get the relationship between China’s carbon emissions and transportation industry, we calculate the growth rate of carbon emissions and freight turnover based on the time series data from 1982 to 2014, showing them by the line chart. According to the change of the growth rate, carbon emissions...

Reinforcement constrains of reinforcement applying on concrete mainly depends on three factors: the grade of concrete (elastic modulus), section reinforcement and loading time. The lower grade of concrete, the smaller reinforcement ratio, the longer loading time all make an obvious influence of reinforcement...

In this paper, the two-way coupling of flow and pile is simulated by using ANSYS Workbench. A comparison between the results of current force in one-way coupling, two-way coupling and code method has been made, proving a reference for the calculation of water flow in engineering. Four sets of influence...

The fire tests included fire load and fire temperature had been conducted to twelve reinforced concrete frame structures with ISO834 standard heating up curve. Furthermore, the creep tests had also been done under room temperature to the above twelve structures after cooling and one structure which with...

Based on the classical NS and FI model, an improved cellular automata model is proposed taking into account the different types of drivers. The drivers are divided into the energetic and conservative. Moreover, the evolution and update rules are given for different vehicles considering their respective...

As the development and utilization of heavy metals in human society more and more, along with the increasing number of heavy metals are released into the water, more and more of the heavy metals are discharged into water bodies. After the heavy metals are into the water, the primary producers of algae...

To evaluate the performances of a new selective plugging agent system, the lab experiments are carried out, it can be concluded that: The plugging agent system has the ability of selective plugging for water and gas; with the increase of the water saturation, the plugging rate of both water and gas are...

This paper analyzed the demand and characteristics of power grid communication, stated the features and applications of service-oriented architecture, studied the scenario and method of service-oriented architecture in the power grid communication, proposed a method to organize the power grid communication...

This study explores the three movement patterns stepping, treadmills and bicycling. In different workloads observe the physical work ability index load (Load) and heart rhythm (HR) relationship. Including oxygen uptake (VO2), carbon dioxide discharge amount (VCO2), RQ (VCO2/ VO2), respiratory frequency...

The removal of chromium (VI) from water with used cigarette filters was studied by column experiments. The effects of flow rate, input Cr(VI) concentration, and column depth on the yield of Cr(VI) removal were investigated. The results reveal that the yield of Cr(VI) removal rises with bed depth as well...

For the production formulas of the gas reservoirs with bottom water, the models established in the past consider that only a small part of the gas layer is perforated and the entire region under the perforated zone is considered as the hemispheric flow, ignoring effects of the opening degree and formation...

Enzyme breakers have many significant advantages compared to the traditional oxidizer chemical breakers because of their substrate specificity, high efficiency and non-toxicity, thus enzyme have been widely used in the water-based fracturing fluids as guar gel breaker. However, there is an industry-wide...

For the aim of sorting non-metallic shredder residue of body of end of life vehicle after disassembly, an innovative density screen is proposed. In this paper, the model of throwing and sliding of plastic and glass scrap of material for this equipment was defined. And then, the numerical simulation of...

Environment protection is very important for all of us. Ecological balance and environmental protection do not by all means depend on technology. The essence lies in human understanding of nature and the concept about human development. The scholars in Humanity play a more important role than scientists...

Heat pipe technology is a rising new technology in recent decades, widely used in various aspects of engineering aspects and industrial production. In this paper, through literature research, the principle of heat pipe technology, classification, development history and research situation at home and...

The research on the influence of the structural evolution of industrial structure on natural environment is a kind of useful exploration for the industrial structure optimization research under the sustainable development theory. In particular, the demand on resource energy of our country at present...

The research progress of membrane fouling control method in water treatment is introduced by four aspects of solution environment, hydraulics condition, membrane property and strengthening coupling process. Former two influence membrane fouling process by changing system charge and membrane surface shear...

Electromagnetic brake system with electromagnetic clutch includes frictional function and electromagnetic brake device brake, friction brakes and electromagnetic brake are mounted coaxially on the rear axle, and the friction brake disc friction braking and electromagnetic brake device are provided with...

In this paper, the mode of action of Morin and protein has been studied through UV and fluorescence spectrum. This paper found that in the pH = 8.50 Tris-HCl buffer solution,at the presence of Zn2+, the protein can cause Morin fluorescence quenching and the quenching degree of fluorescence is in proportional...

The binding reaction between carminic acid CA and bovine serum albumin (BSA) was studied by fluorescence and absorption spectrometry. It is shown that there is a powerful ability in CA to quench the fluorescence intensity of BSA, and there is an overlap between the fluorescence spectrum of BSA and the...

In this study, a desalination procedure has been developed in penicillin G-processing wastewater biological treatment. The procedure is focused on removal of part of organics and the majority of sodium sulfate to decrease the difficulties in subsequent biological treatment. The effects of activated carbon,...

Structural complexity is obvious in WW fault block of A oilfield, mainly due to high fault development degree. Based on the study of core observation, high resolution sequence stratigraphy and seismic profile, the lower second sub-member of Shahejie Formation of WWfault block was subdivided into 58 layers....

An underground geologic model which can reflect the structural characteristics as precise as possible is very important for oil and gas exploration and production. Three-dimensional structural modeling technique provide an effective method for subsurface formation architectural description. This article...

The model of the power system load has an important impact on power flow calculation,stability analysis.Compared with the traditional load modeling method to determine the structure further identification of the model parameters,using the genetic programming to load modeling do not have to preset the...

Some procedures or functions had be added to an ESTA (Expert System Shell for Text Animation) so that the ESTA and MATLAB can communicate via some data files.On this basis,a deep learning-DBN(Deep Belief Network) and two BP(back propagation) artificial neural network based on the MATLAB programming were...

Green foams/aerogels based on nanocellulose derived from natural plant fibers have been extensively studied because of their great potential for applications in energy adsorption, energy storage, template, thermal insulation, sensing, and water purification. Progress in fabricating foams/aerogels using...

A HVDC supplementary controller is designed based on Extension control method, the controller can be divided into different feature status depending on the magnitude and speed of the system frequency change, to take a different calculation method to control the output in different measurement modes quickly...

With the development of IGBT and GTO, more and more high-voltage and high-power devices applied in the power system.In terms of stability, harmonic, response speed,the superiority of STATCOM is more far than SVC.In order to make STATCOM play better results,the key is in controller design level.Through...

In order to answer following two questions, One is the influence factors and the influence degree of China's total energy consumption Another is in the future five years China's total energy consumption trend prediction. This paper begins with a qualitative analysis of factors affecting China's total...

In order to effectively prevent rockburst, and makes the evaluation and classification of hazardous area of the working face has the potential impact of risk, to put forward the comprehensive index method and the macroscopic evaluation of multi factor coupling impact risk assessment method. In Xinglongzhuang...

kV distribution network topology is complex, along the lines there are many connected power distribution transformer and branch lines, and the lines are mostly hybrid cases. Its channel transmission characteristics are complex and variable, which has caused great difficulties to the high rate NB-PLC...

In this paper, the optimization proposal of a waste heat recovery exchanger has been studied by the method of net present value (NPV). The result shows that the maximum income and recover maximum heat can be obtained as the optimal NTU=2.19.

Three typical organic fluids for Organic Rankine power cycles utilizing low-temperature slag washing water of blast furnace is presented. With the aim of making the best use of the energy contained in a stream of 60–80 slag washing water of blast furnace. The available heat flux of R125 is the highest,...

For the maintenance of a 330 MW limestone - gypsum wet flue gas desulfurization system found, in-depth analysis of the factors affecting the desulfurization gypsum quality, including: impurities in gypsum, absorption tower impurity balance, desulfurization absorbent quality, lime stone particle size....

The features of economic social development and urban layout of Liaohe Basin result in heavy water pollution, difficult treatment and many remaining problems with features of structural, compound and regional pollution. We should adjust the develop strategy, underline industrial harmony, emphasize environment...

To explore the development and influence factors of shale micro-fractures, we used SEM and AFM to observe the shale samples of JY1 well. There are some factors from these pictures: the surfaces of JY1 well are ups and downs; the difference is up to micron level; the micro-fractures connected widely....

In this paper, Edible Podded Pea seed is taken as the test plant to explore the influence on growth of pea seedlings in different dilution ratio of biogas slurry. The study shows that the biogas slurry with dilution ratio being 1:50 contributes significantly to the emergence rate and seedling length...

ASP flooding has been proved to be an effective method to enhance oil recovery. But residual alkaline in produced liquid have resulted in stable crude oil emulsion, the difficulty of separating oil and water is obviously increased. Based on interface tension experiment, emulsification experiment and...

By substituting a considerable amount of diesel fuel in diesel engines, combustible biogas is considered to be a renewable and promising alternative gaseous fuel. In this paper, biogas was made from agricultural and forestry residues with a gasifier. Its high quality was ensured by the process of cooling...

In this paper, a method for estimating the system harmonic impedance and harmonic emission level based on the pan-normal impedance cloud is presented. First of all, based on the basic principle of fluctuation method, it can be obtained that the key to estimate the system harmonic impedance is how to...

Various types of low-level indexes and uncertainty of evaluation information due to quantitative index and qualitative index exist in converter transformer condition evaluation. To solve this problem, a novel converter transformer condition evaluation approach based on the belief rule base inference...

Through improved select tactics and genetic operators, the accelerating genetic algorithm (AGA) and simulated annealing algorithm (SA) were combined to form a new algorithm called accelerating genetic and simulated annealing algorithm (AGSA). A modified method to develop the flow rate prediction model...

At present, the solar ejection refrigeration system’s solar collecting system mainly adopts water as medium for solar energy absorption and then as the heat source of ejection system, which leads to a result that the system must be provided with components like water tank, and circulation pump, etc.,...

In this study, La0.6Ce0.2Pr0.05Nd0.15Ni3.55Co0.3Mn0.4Al0.3(Cu0.96Be0.04)0.45 alloy was heat treated for 4 h in argon atmosphere at 923, 1023, and 1123 K, respectively. The results of scanning electron microscopy indicated that surface morphology of the heat-treated alloys changed significantly. Before...

Taking the Tang steel’s 1810mm hot rolling line as an example. This paper first gives an overview of this hot rolling line. And then, describes the general and special instruments used in details. Finally, combining theory with practice, this paper is concluded to help for using instruments in varied...

Found in the study of generator excitation system,by using the method of parameter identification for the model may well fit the system of input and output dynamic data, but some parameter identification result is very unstable or appear more solution, This phenomenon is known as the parameter identifiability....

Time-of-use (TOU) price can reduce load of power grids fluctuation effectively and increase the efficiency of electric power system operation.The key to the successful implementation of TOU price is the establishment of TOU price. The TOU price optimization model is based on price elasticity matrix of...

The extracting technology of algin from kelp and the preparing technology of edible fresh wrap from algin are reported by this paper. Firstly, the crude algin was extracted from kelp, which was purified by the methods including solid-liquid separation, precipitation, bleaching, transformation, dehydration...

Wind power has important effects on the stability and economic operation of power grid with its strong randomness and volatility, which become the important restriction factor of wind power generation. In order to have a good prediction effect on the volatility and uncertainty signal, the article proposes...

Reactive powder concrete is a kind of high performance concrete. In this paper, it is analyzed that two kinds of fibers RPC on appearance, mass loss, the compressive strength at the different high temperature and the microstructure after high temperatures.

This article designed to make a comparison between the concrete mixed by the river sand of debris flow in Dongchuan, Yunnan province and the concrete made from the mixed sand in its working performance and mechanical property. By the numerous experiment testing results, we can find out the advantages...

Power grid in future will develop into an extra-large interconnected grid with larger transmission capacity and more complex running characteristics. The trend of grid dispatching control system must be global wide-area and dynamic integrated necessarily. In this situation, it makes higher demand for...

Power grid dispatching automation system in future should follow the integrity nature of provincial level power grid. Since we consider provincial power grid as an organic whole, the real physical power grid should be described with a unified model, and its operation should be supported by a unified...

In the experimental study of electric vehicle (EV) charging equipment performance testing, we found that when the EV charging equipment charged the power battery in a constant current mode, some charging devices output current contained a lot of current ripples. Thus, the index of voltage ripple coefficient...

With the fresh water crisis coming people all around the world put their eye on the seawater desalination. " Asking the ocean for freshwater", has become a common choice in many countrys,which means seawater desalination becomes an important way to solve the problem of freshwater. A lot of high energy...

By analyzing the overlying strata caving characteristics and properties of porous media that a heterogeneous porous media properties mined crack rectangle landings is formed in the mined-out area. Introduction of translation-diffusion equation and to simulate the flow of gas diffusion behavior; by the...

Haze pollution has become one of the most serious environmental problems in China, especially in Beijing-Tianjin-Hebei region. Chinese government has issued a haze control policy in 2013, which aims to alleviate haze pollution through reducing emission of air pollutants. However, there is a doubt whether...

Objective:To purify and characterize the allergen extracted from fresh Amaranthus stamen. Methods:Extraction of fresh Amaranthus stamen was prepared and analyzed by SDS-PAGE. The protein bands were visualized by staining the gel with Coomassis blue and analyzed by Western-blotting with serum from allergic...

In the operation of Wind turbine generator system has the fierce system vibration, which has the very tremendous influence on gearbox's movement precision and gear's life. As for the complexity of gearbox's structure and working conditions, it is necessary to research on the vibrate question of wind...

Chongce ice core, drilled from West Kunlun Mountain, 6350 meters high, provides a unique opportunity to obtain the past atmospheric environmental information. In this paper, the composition and concentration of ions, ions sources in Chongce ice core were analyzed, and the ions variation during last century...

The content of high ash fine slime in raw coal of Shiguai area in Inner Mongolia is high, the load of flotation system of coal preparation plant is heavy and the flotation clean coal ash is difficult to meet the local standard lower than 15.00% thus resulting in a serious waste of slime resources. This...

To understand the migration transformation rule of heavy metals in the process of extracting proteins from the sludge with enzymatic hydrolysis, this experiment studied the total amount of heavy metals in the sludge and the its morpHological change characteristics in the process, and the results showed...

A soil column-cultivation leaching experiment was conducted in greenhouse to expose the HMs leaching characteristics in the process of EDTA-enhanced Phytoremediation of Cd- Pb compound contaminated soil by Zea mays L.(in seedling stage) under the condition of acid rain. Results showed that: (1) In the...

Fan coal mine as one of the main equipment, electrical power, with 24h operation every day, there is a serious power consumption.Aiming at the problems of cyclone machine adjustment method, the use of 10 kV high-voltage inverter realize remote control, and have achieved good energy saving effect.

Firstly, the fuzzy comprehensive is made for each risk factor of large-scale water conservancy and hydropower engineering in its life cycle’s each stage, and the fuzzy comprehensive evaluation vector is transformed into fuzzy scores, total risk of ecosystem in different development scale and value of...

According to structural feature and operating characteristic of several kinds of new style steam seal, their application position in flow passage and axle head is introduced in this paper. Energy saving effect is generalized by synthetically analyzing several parameters, which are tested before and after...

The condenser modification of a 150MW unit for high backpressure cooling water heat supply is introduced in this paper. Economy characteristics of the transformed condenser are calculated using the high and low backpressure operation data. The condenser terminal difference is 2.354ºC under high backpressure...

Adsorption of chlorpyrifos (CP) by giant reed(Arundo donax L.)derived biochars obtained at 300-600°C and their corresponding de-ashed biochars was investigated.With increasing pyrolysis temperature,the adsorption capacity(Qe) of CP ontothe biochars increased. The maximumvalues of Qe of CP by the water-washed...

Analyzing the flow channels between production wells and injection wells is very important to develop an oil field. For the oilfield D, the streamline numerical simulation method is adopted to output the flow line distribution, the allocation factor graph of injection wells, and water injection efficiency...

To create a modernization mine of safe and efficient production, the premise is that must be to ensure safety, economy, stability of the roadway support, and bolt support in coal roadway supporting systems plays an important role, in order to make the bolt support can better service for our modern mine....

To reveal the effects of the different city environment (clean area and polluted area) on native trees, leaf functional traits of six native trees in Zhanjiang were studied. The relationship between leaf mass per area (LMA) and leaf functional traits were analyzed. The results showed that different leaf...

In this paper, we design a LED driver, power factor correction circuit topology used + quasi resonant flyback type two level structure, the quasi resonant flyback type DC/DC transform part of the small signal model, design the system feedback loop parameters, to achieve the constant current drive + constant...

Biogas technology, with the health, environment, economy and energy benefit, has attracted significant public and legislative attention for a long time. Despite the multiple benefits of biogas, there are some exist barriers including economic, political and social issues that have become major obstacle...

Nanosize SAPO-34 zeolite was successfully prepared by hydrothermal method using tetraethylammonium hydroxide(TEAOH) and triethanolamine(TEA) as template. It was investigated by X-ray diffraction and scanning electron microscopy. The results show that the dual template can control the particle size and...

The direction and limitation of desulfurization and denitrification reaction were analyzed by calculating thermodynamic functions, and the reaction mechanism of desulfurization and denitration was proposed. The pollutant removal efficiencies were deduced by the equilibrium partial pressure of SO2 and...

Waste paper as a new kind of biomass resource was selected as the research object to ferment and produce D-lactic acid in this paper. The components of raw materials were compared between waste office paper and waste newspaper, which were pretreated by shredding, 3% H2SO4 and enzymatic hydrolysis. The...

Compared with traditional internal-combustion engine powered UAVs, electric UAVs have no emission of pollutants and low acoustic signal. So they are more suitable for military or civil missions involving intelligence, surveillance, or reconnaissance (ISR). This paper builds two electric propulsion systems...

Based on the research of paste-like backfill technology in roadway mining under highway of Tang’an Coal Mine, the mining scheme was elaborated, the system and technology of roadway mining with paste-like backfill were introduced, the technical effects and economic benefits were analyzed. The results...

In this paper, the radiation heat supply and displacement ventilation system for the wall of capillary tube are established. The indoor thermal environment is simulated by the Airpak software, and temperature contours,velocity vector images, PMV nephogram are made respectively. By analysis and comparison,...

Solvent selection is the key of solvent crystallization method In this paper, the optimal crystallization conditions for xylene and DMF extraction of refined carbazole is studied that the crude carbazole as a raw material, dissolved temperature is 85 , crystal-keeping time is 90min, the solvent ratio...

The water pollution in Shenzhen Bay caused by sewage discharge is numerically simulated using ECOMSED, a two-dimensional hydrodynamics and water quality model. The results indicate that Shenzhen River and other land-based pollution sources lead to heavily water pollutions in Shenzhen Bay. The pollutant...

With the saltwater border map method, the saltwater border map along Modaomen channel in dry season of 2014-2015 year is drawn and the time series of the 0.5‰ saltwater border is obtained. The movement of the saltwater border is discussed. There are two phases with different amount of upstream runoff...

This paper is to establish a comprehensive system combining statistics, monitoring and evaluation of energy consumption and CO2 emission, which is to obtaining the real-time traveling geographical coordinates and energy consumption by using mobile vehicle-mounted terminal. It allows transport authorities...

Through analyzing the recent international nuclear power tender cases, summarize the new features of the markets and the divers demand of the customers. Remind China nuclear power cooperation to pay more attention to the demands of customer

The row number ratio between high temperature surface air cooler and low temperature one of segmented handling air-conditioning system has great impact on its performance. To study the variation of the system performance on different row number ratios, a performance prediction model of the segmented...

Sound quality evaluation may be conducted with multiple different objective evaluation models, but reliability of evaluation results is different. Noise samples of two ears of the driver were gathered when the car operated at the speed of 60km/h and different music was played in the car. After equal...

A novel rhodamine 101 derivative has been synthesized and employed as a fluorescent off-on probe for monitoring Cu2+ in aqueous solutions and living cells. Under physiological conditions, it exhibits a remarkable increase in absorbance at 587 nm and an enhanced fluorescence at 615 nm toward Cu2+ in a...

Utilizing the mechanism of HOCl-mediated cyclization of rhodamine 101 thiosemicarbazide (non-fluorescent) to rhodamine 101 oxadiazoles (fluorescent), we successfully developed a novel off-on far-red fluorescent probe (1) toward HOCl with high selectivity, great functionality at physiological pH and good...

Application of biochar(BC)and biochar-based ameliorant (BCA) to agricultural soilhasbeen proved to exert bene cialeffects onsoilfertility and crop yield.However,little information is available about theirinfluencesonfruit quality. WeinvestigatedtheeffectofBC or BCAon Watermelon(Citrulluslanatus)growth...

The on-line monitoring system undertakes the task to obtain status information of transmission lines and corridors in smart grid. Micrometeorological monitoring is an important resource of environment information of the corridors, which will provide data support for operation and maintenance, forecast,...

A biogenic synthesis of silver nanoparticles (AgNPs) was achieved using pomegranate peel polyphenols in this article. The formation of AgNPs was confirmed by UV-vis spectrum and TEM image. The biogenic AgNPs showed Surface Plasmon Resonance (SPR) peak at 433nm as shown from the UV-vis absorption spectrum....

The method of uncertainty evaluation of determination of toluene in room air has been established. Gas chromatography with thermal desorption was used for determining of toluene. The main factors which can affect on the analytical results were identified. The measurement repeatability, standard solution...

The value of geopark include natural value, ecological value, scientific value, cultural value, tourism value and location value, which can be further divided into core layer of natural and ecological value, intermediate layer of scientific and cultural value, and peripheral layer of tourism and location...