The denitrifying phosphorus removal bacteria (DPB) were enrichment using SBR reactor and two stages of training method under the low carbon source with nitrate as electron acceptor. The system was operated under the condition of anaerobic-aerobic-precipitation-discharge for 10 cycles in the first stage,...

Analyzes the ground adjustment ability in thermal equilibrium of the GSHP system during intermittent operation of 1:1 and 1:2 in summer through experiments. The result shows that the intermittent operation of 1:2 can maintain good heat transfer efficiency and better achieve restoration of the soil temperature...

The triaxial compressive strength of medium-grained sandstone after different high temperature about on 25 400 800 and 1000 be researched by the servo-controlled testing machine RMT-150B. The test results show that: (1) it is still a strong liner relationship between the triaxial compressive strength...

In this paper, Rare earth (La, Eu, Sm) hydroxide nanorods have been prepared by facile hydrothermal treatment of the corresponding bulk oxide powders. The obtained samples were characterized in detail by scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and transmission electron microscopy...

With the smart electricity meters heavy using, efficient and reliable network and transportation protocol are becoming more and more important to collect energy data from the meters. This paper proposed a new network topology for data collection from large amount resident energy meters. This topology...

Dynamic management in current-carrying capacity of overhead transmission line is a significant application in smart grid. Dynamic management technology in current-carrying capacity is to establish measurement information relationship model of conductor temperature, ambient temperature, wind speed, wind...

There are many factors can determine the module of gear. One of the most important is the strength of the gear noise and quality. Reduce the modulus, increase the tooth width can make the reduction of noise and can reduce the quality of the transmission conversely. This paper is based on the dynamic...

In this work, a new type of micro-electrolysis technology using combined materials containing fly ash, iron scraps and lanthanon Gd on the treatment of toxic and harmful aniline wastewater was presented. Fly ash was applied instead of activated carbon in the combined materials and single-factor experiment...

Using maleic anhydride as raw material, sodium tungstate as catalyst, hydrogen peroxide as oxidizing agent, calcium hydroxide as initiator, the synthesis conditions of the best scale inhibition performance of poly epoxy succinic acid were studied by using the method of polymerization: maleic anhydride...

In this paper, it is established the model of air-conditioning system and a simplified model of cooling system in the vehicle. That model is based on the test data. One-dimensional model has been corrected by the three-dimensional calculation results. Therefore, the one-dimensional model also reflects...

Vast photovoltaic powers connect into power distribution network Distribution Network. These PVs are large in quantity and scattered, make grid difficult in monitoring, which will bring challenge to the safety and stabilization of power grid. It is very necessary to get related monitoring data of PVs....

Structural features of enzymatic hydrolysis lignin from the corn stalks and furfural residue was compared with lignin extracted from paper-making black liquid (PBL). Lignin was characterized by FT-IR, GPC, 13C- and 1H- NMR analysis. Enzymatic hydrolysis lignin from the corn stalks (CS) had a 12.2% higher...

In order to study the effect of water on the rock compressive strength, mechanical data for different water content of siltstone uniaxial loading process are analyzed, the results show that: 1) siltstone compressive strength decreases as the water content is increased, the damage of water to siltstone...

Reinforcement corrosion in concrete is an important factor that affects the durability of reinforced concrete structures. In marine environment, especially, non-longitudinal cracks accelerate the intrusion of chloride ions into the concrete structure. Chloride ions destroy the passive film on the surface...

Bottom water coning is the main problem in the development of bottom water reservoirs and barrier layer in these reservoirs can control bottom water coning in some degree, so the research of the effect of barrier layer in bottom water reservoirs is carried out. This paper, in streamline simulation method,...

With pineapple leaf fiber as the raw material, refined dry jute is obtained through refined processing, which is blended with cotton to trail-produce 30S pineapple leaf fiber/cotton (30/70) blended yarn. Through the combination of industry, university and research and by cooperating with the textile...

In this study, we investigated the hydraulic environment heterogeneity of the Lijiahe spawning ground which locates in the downstream of Jinchuan River, one tributary of Dadu River. River2D was conducted to simulate the hydraulic environment, namely flow velocity and water depth, under different discharges....

By means of ABAQUS, the numerical model of grouting-sleeve reinforcement-connection component under the action of axial tension load was established, and the influence of grouting- material compressive-strength on the stress distribution, the displacement distribution at grouting- material, reinforcement...

The flotation separation behaviours of mercury (II) by sodium chloride-potassium iodide-octadecyl trimethyl ammonium chloride system were studied.The effects of different parameters,such as the dosages of KI and octadecyl trimethyl ammonium chloride(OTMAC),vari- ous salts and acidity etc. on the flotation...

An experiment is carried out to simulate siltstone tunnel water inrush with both the water pressure and no water pressure by biaxial rigid servo-controlled system. The PCI-2 acoustic emission(AE) system produced by American physical acoustics corporation is used to collect data of the AE in the process...

The secondary vibration isolation may be used to abate sound transmission in solid in the application of damping and noise reduction treatment engineering, which can have an ideal effect. The secondary vibration isolation system has a natural low frequency so it can isolate low frequency vibration. The...

By means of finite element software ABAQUS, the numerical model of grouting-sleeve reinforcement-connection component under the action of axial load was established. Two kinds of loading system were considered, one was axial tension load with constant loading rate, and another was unidirectional cyclic...

A new ash grinding process was proposed,with the application of vertical grinding mill systems to grinding,sorting,and collection process The process by designing a new type of vertical grinding system to solve the small particles of fly ash in the state is not easy grinding problem,significantly reducing...

New ideas and thoughts of reuse and maintain of Taiwanese cultural heritage has only developed in these recent two decades. The definition of cultural heritage seems not being well understood by citizens in Taiwan, far more about the concepts and policies. Thus cultural heritage has normally been schemed...

In order to plug water channeling of fractured tight oil reservoir, a new type of copolymer as the main agent is used for deep profile control and oil displacement. This copolymer is synthesized with modified cellulose and acrylamide, which has relatively lower viscosity and can meet the requirements...

Reactive molecular dynamics simulations (MD) have been performed to investigate how the decomposition of bulk Cyclotrimethylenetrinitramine (RDX) is affected by electrical field. The rate of RDX molecules loss with time and time evolution of the total populations of various key molecules were evaluated...

Test the high speed train's door closing sound under different close pressure and then use the linear sound pressure level(SPL), A weight sound pressure level, psychoacoustic parameters of sound quality and specific loundness to analyse the sound. The results are indicated as follows: the frequence of...

By using core, slice, Scanning Electron Microscope, high pressure mercury injection and physical property data, this paper analyzes the lithology, pore structure, fracture and physical property characteristics, classifies the reservoir types of Chang 6 oil-bearing formation in Yuekou area. The results...

Arkose has been designated as the main reservoir of Chang 6 oil–bearing formation in Tangjiaping area and has a good development of residual inter-granular pores and dissolved pores. The porosity of Chang 6 reservoir mainly ranges from 5% to 12% and the average is 9.2%, while the permeability is mostly...

In order to improve the measurement precision of infrared sight line alteration,a new adaptive correction algorithm of CCD camera pose small angle changing was proposed.Through the theoretical analysis,a mathematical model of the CCD camera pose calculation was established and a camera pose calculation...

Coal is the most important energy resources in China's economy. In recent years, China's coal industry has made great progress. However, many problems including weak sense of resource protection among people, confusion of departments in charge of supervision, lacking in mechanism of motivation, etc,...

Al/Pb-0.8%Ag and Al/Pb-0.75%Ag-0.03%Co anodes were successfully obtained by electrodeposition from methanesulfonic acid. The relation of silver content(y/m%×104) in Pb-Ag coatings and Ag+ concentration(x/mgdm-3) of electrolyte was . The results of anode polarization curves and Time-Potential curves showed...

The red clay has high moisture content,high plasticity,high void ratio and other special engineering properties,especially when the subgrade surface dehydrates,it shrinks and cracks,caused the subgrade to have some diseases.Taking the subgrade filling from the Liupanshui inner Expressway as the research...

In this paper, the development history and current situation of air floatation, the advantages and types of air flotation method, and the effects of flotation method on water treatment are expounded. The influence of the sizes of microbubble that is an important factor to the flotation effect on water...

Based on cylindrical source model, heat transfer process between the underground pipes and the soil was simulated. The feasibility of this simulating method was validated by comparing its results with the temperature data obtained from the existing ground source heat pump test platform. Thus this method...

At present, the study on the temperature fields of floor radiant cooling system and ceiling radiant cooling system based on displacement ventilation is more, but for the humidity field research of the two systems is insufficient. There is a thermal stratification in the temperature field of both kinds...

Liaohe depression Paleogene shale has great potential in shale oil and gas exploration. Well logging technology is an effective means to evaluate shale oil and gas. The logging response characteristics of Paleogene shale were studied and the separation form of acoustictime and resistivity curves were...

Based on the current rapid popularization and development of electric vehicles, serious environmental pollution and energy shortage problem, this paper researches the impact of the distribution network with distributed generation when the electric vehicles joining in the optimal operation. First, establishes...

This paper introduces the suitable technologies for energy-saving renovation project of an existing campus building of Shenyang University, with its emphasis on energy saving works of building envelope (external wall, external window and roof), it also analyzes energy consumption reduction ratios and...

In this study, a new bi-layered silk fibroin (SF)/ chitosan (CS) wound dressing was investigated. The morphology, cytocompatibility and effect on open wound healing in rats were studied. The results show that the SF/CS wound dressing has homogeneous porous structure and support the attachment and proliferation...

Study the effects of diesel engine emission characteristics with different adding proportions of ethanol on a DI diesel engine. The results show that with the increasing of ethanol blending proportions, the diesel exhaust gas decreases with the addition of ethanol, the emission of NOX also reduces significantly,...

This paper presents an improved model of multi-DGs system for analyzing the system stability during grid-connected. The DGs, in the system, are equipped with the Sandia frequency shift (SFS) scheme as anti-islanding protection technique. Relationship of system parameters, such as the length of distribution...

With the rapid development of power transmission and transformation projects in China, steel supporting structure has already became the most popular structural form for these structures, and high-strength steel (normally means the steel with the nominal yield strength in the scope of 460MPa and 1100MPa)...

The event that some lightning rod was fractured and collapsed at the tubular joint of lightning rod occurred in some transformer substation recently. The mechanical property of the tubular joint of lightning rod and frame column for transformer substation was analyzed in this paper based on the structural...

The event that some lightning rod was fractured and collapsed at the tubular joint of lightning rod occurred in some transformer substation recently. The stress concentration at the tubular joint area was the main reason which caused this failure. This paper proposed the solution to recover the collapsed...

General petroleum asphalt is a common inexpensive impermeability of waterproof material, but its some performance limits its development. In order to make up for the defect and reduce the cost,we discussed the preparation of waterproof coating made of petroleum asphalt which is modified by BRA in this...

In 2006,our government further deepened the reform of coal resources paid use system, and gradually established coal mine environment and ecological restoration responsibility mechanisms, implementing mine ecological restoration deposit system. However,there is risk in the process of the deposit system...

A large proportion of power loss in distribution system is from transformer, which is not considered in the traditional Distribution network Reactive Power Optimization (DRPO). This paper proposes a DRPO model considering the power loss of transformer. The optimization method includes reactive power...

Tight oil and gas reservoir have a huge reserve all over the world. The shape and distribution of fractures in tight formation are the key contributors to high-efficient exploitation. An effective description of fractures is significant and fundamental for the study of fractures in tight reservoirs....

Viscoelastic properties is an important indicator to characterize the mechanical properties of materials, due to join a large number of crumb rubber makes viscoelastic properties of rubber asphalt are very different from other types of asphalt. In this paper, through theoretical analysis and Laplace...

In this paper, the immune adsorbents were prepared for adsorption of aflatoxin M1 in milk. The copolymerization of glyceryl methacrylate (GMA) and methyl methacrylate (MMA) microspheres were prepared using dispersion polymerization with azodiisobutyronitrile (AIBN) as initiator in ethanol-aqueous medium...

Soil erosion has been a severe environmental problem all over the world. Vegetation significantly affects soil properties, organic matter, infiltration, runoff, and soil organisms which further influence soil erosion. Canopy and roots are the main two parts that vegetation affects soil erosion. Canopy...

This paper conducts a study on the detection method of common antibiotics ofloxacin(OFL) in different water. With high performance liquid chromatography- diode array detector(HPLC-DAD) as the detecting method, the chromatographic detection condition and pretreatment method of the samples are in the study...

Haze-fog has been a severe pollution weather phenomenon in China due to a large number of emissions of pollutants with the rapid development of economy. The areas burst haze are usually coincidence with high density of electricity transmission line corridor or power load areas, and so the pollution flashover...

Ceramic Insulator is an important part of the electric power equipment.When the deposition of pollutant in the air contamination environment is serious, the uniform distribution of voltage in the ceramic insulator bunch will be changed in the real working environment and leads to an accident. This paper...

Based on the observed data of soil water content (SWC) at farmland from May to September in 2009~2012, the statistical characteristics of SWC in farmland at different soil depths (from 0 to 150 cm) and different months in the growing season (from May to September) in Korqin Sand Land were analyzed. In...

A suction mouth model is established to research the negative pressure sucking up work process of medium dry brush type sanitation sweeper pneumatic conveying system. The flow field distribution and the dust particle motion residence trajectory are analyzed by numerical simulation, and then some optimization...

Seismic design of underground structures is an important part in earthquake engineering. Numerous simplified calculation methods have been raised in the seismic design of horizontal structures. According to the Chinese code in the seismic design of subway structure which was put forward 2014, it is crucial...

This paper presents the analyses of the influence of the weak layers on the excavation-induced deformation in the sub-sea tunnel. The finite element software ABAQUS is adopted to investigate the stability of the surrounding rock in the case of inclined weak layers with various angles, and the stress...

High pressure mercury and nitrogen adsorption had been conducted on outcrop and core samples for studying the pore structure characteristics about shale in eastern uplift of Liaohe depression. The results showed that: The pores mainly are nano-scale and irregular in size and arrangement. The nitrogen...

In order to determine the effectiveness of turning frequency in maturity in kitchen waste composting process. Four treatments by setting up different turning frequency which are twice a week, once a week, once every two weeks and never turning were conducted during kitchen waste compositing with corn...

In order to release the emissions of H2S, this study designed experiments investigate the effects of nitrification (NaNO3, NaNO2 and ammonium molybdate) on producing and releasing H2S during kitchen waste composting. All treatments were analyzed using 60L heat insulated composting vessels with forced...

Carbon footprint calculation methods and its application in cotton mill were studied. Overall idea of carbon footprint calculation in cotton mill as well as power consumption of each equipment in production was analyzed. It is pointed out that carbon emissions can be obtained by the indirect method of...

The discharge of wastewater which contains dyes, represents serious environmental problem and receives public health concern. It has become a big challenge to degrade and mineralize these dyes. Advanced oxidation processes (AOPs), based on the production of hydroxide radicals are effective methods to...

According to the telescoping tube failure problems, and the drainage vehicle displacement is 3000 m3/h, T-shaped inflatable sealing ring parameters were analyzed. Using the finite element software ANSYS to build numerical simulation models. Sealing performance under different inflatable pressures, different...

The advantages of its energy conservation and environment protection are firstly stated when an industrial heat pump technology is applied for evaporation process of waste solution. Based on a concentrate need of zinc sulfate, a process design of heat-pump evaporation system is done, and a heat-pump...

A survey on hexapod walking robots and gait planning is presented. For the discrete landing points, the redundant DOF of legs and the impending body, the performance of hexapod walking robots is better than wheeled robots and tracked robots. The prototypes of hexapod walking robots and its up-to-date...

This paper introduces design of mix proportion of recycled Micro-surfacing technology mixing with a certain amount of Recycled Asphalt Mixture referred to as the RAP and its application in preventive maintenance for Yunnan Yong wu highway.

Research on Classification Environment Technology Diffusion of Occupational Tobacco Growers

Fourteen environment factors of differential management system of tobacco farmers are determined and selected from predecessors' research achievements. Relational structure of fourteen environment factors is analyzed by ISM model in this paper. This results show that sales average price, family members...

Low carbon city refers to promote low-carbon economy, realize low-carbon emissions. First of all, challenges of low-carbon city economic development in Zunyi are analyzed. After that, conceptual model and design idea of index of low-carbon urban economy are given. Finally, some policy suggestions are...

Global climate change caused by carbon dioxide and other greenhouse gas emissions has become increasingly concerned by the international community.Based on carbon source and carbon sink analysis frame in low-carbon economy theory, this paper constructs a low-carbon city measure index system which includes...

The power grid data quality is the key factor which will affect various applications of smart grid power dispatch control system, and Power system state estimation results implied the problems in power grid data. The existing state estimation evaluation index is relatively single, and the analytic result...

The global climate is undergoing a significant change with global warming. The cause of this change is greenhouse gas emissions by carbon dioxide. This article embarks from the challenges faced by construction of low-carbon city in Guiyang, using DPSIR model, from five aspects, including driving, pressure,...

During the process of natural gas hydrate drilling, hydrate cuttings will decompose at a certain position, which promotes the formation of complex multiphase flow in annulus. Aiming at this, dynamic model of hydrate mass transfer decomposition is established considering temperature and pressure. On the...

The article studied the influence of pH to the gelling properties and stability of HPAM/Cr3+, the results shows that the alkaline environment could promote the gelation rate and strength. The gelation rate can be lifted properly by increasing the pH value. The HPAM/Cr3+ which exist in the alkaline has...

Fractured horizontal wells are widely applied in the development of tight reservoirs nowadays, which will stimulate the seepage zone, reduce resistance near the wellbore and increase productivity. Through analyzing all factors affecting fracturing development effectiveness, select the key factors, and...

Analysis of design methods of humidity regime for multilayered wall structures based on cellular autoclave composites is realized. Relevance of arrange of study of cellular composite work humidity is proved. Experimental studies were curried up as well as results of sorption wetting and water vapor transmission...

The Middle Submember of Member Three of Shahejie Formation of Paleogene (Es3~Z Member) in the west of Niuzhuang Sub-sag of Shengli Oil Field is the research object of this article. In this article, the porosity and permeability of the Es3~Z Member are statistically analyzed and calculated from well sampling...

As municipal organic solid waste problems become increasingly serious. According to the actual engineering situation, taking into account the social, economic, technical, environmental factors and so on, which is imperative to select waste treatment technologies. In this paper, based on the relevant...

This work is to study a novel hybrid energy-harvesting shock absorber for vehicle to provide the required damping function to reduce the vibration between vehicle and roads, as well as to reclaim vibration energy from automotive suspension system during driving. The hybrid energy-harvesting shock absorber...

Through expounding the ecological environment situation of key district of Changzhutan urban agglomeration, the two-oriented society ecological security evaluation of index system was established. Ecological Security was evaluation. The general structure and measures for improving the security of ecological...

Based on the ship-based data in the Lianzhou Bay, an advection-diffusion model of pollution is established. The sharing coefficient field (SCF) and the responding coefficient field (RCF) are simulated by this model. The environmental captivity (EC) is calculated by the simplex method according to the...

Establishing the model of the shallow lake ecosystem with stochastic excitation, with the stochastic averaging method and nonlinear dynamic theory, the model of the shallow lake ecosystem with stochastic excitation was simplified. Based on the Stratonovich-Khasminiskii stochastic average principle and...

Winter in northern China, the presence of low temperature and turbidity micro pollution of groundwater.a conventional water treatment process finished water can not reach drinking water standards, so the need for process improvement, enhanced coagulation using powdered activated carbon with a very good...

[Objective] By screening salt-tolerant strains , provide support for salted wastewater.[Method]With high salted water high efficiency salt activated sludge acclimation salt high efficiency cultivation as the source of strain , isolated and purified salt-tolerant strains , by measuring the salt-tolerant...

By importing the meteorological data of water temperatures to TRNSYS software, temperature differential control method was applied to simulate hybrid ground source heat pump system for three months in Wuhan. In order to obtain running effect of this system, the inlet and outlet water temperatures of...

In order to analyze the bearing capacity of monopile foundation and elevated pile foundation for offshore wind turbines, models were established using finite element analysis software Abaqus and design software FDOW. Bearing capacities of the monopile foundation and elevated pile foundation were compared...

A Fresnel solar collector with triangular cavity absorber is introduced and the performance tests are carried on. The Fresnel collector is consisted of a cavity absorber with tube rows, a mirror field with flat glass, and the trace system in homotaxial manner. According to relative technical standards,...

The optical losses of the Fresnel collector’s mirror field are analyzed mathematically and optimization for the design parameters is made. In analysis of the optical characteristics, the optical losses of different segment are described according to the optical principles. And the optical efficiency...

A study on the thermal physical property of kind of phase-change heat storage materials is carried out to explorer the feasibility in the solar thermal storage area. Using the compacting-melting-absorbing-cooling method, the composite material of PE, PG and expanded graphite are made, the thermal conductivity...

This paper presents a simplified method for calculation of thermal efficiency of the solid fuel fired boiler on-line.Although this method simplifies complicated calculation and adopts some approximate calculation,it still includes almost all items of heat loss proposed in ASME PTC4[1],which makes it...

Titanium dioxide (TiO2) photocatalyst and diatomite adsorbent were made into a paper-like composite by a papermaking technique using pulp and ceramic fibers as sheet matrix. Simulated wastewaters that contain methylene blue (MB) bleached in photocatalytic TiO2-diatomite sheet was investigated under UV...

The paper studied formaldehyde emission (FE) of E0 class blockboards by desiccator and gas analysis method. Results showed that for the same formaldehyde emission value got from desiccator method, the gas analysis (GA) values were quite different. It was suggested to use gas analysis method to evaluate...

In order to investigate the effect of ultra-fine smash on the separation results of Shenfu semi-coke, the impact crusher was used to explore the relation between the degree of dissociation and the particle size and ash content. Additionally, the operating parameters of separation device of impact crusher...

The purpose of the paper was to test the floc performance in the process of flocculation by applying to the micro eddy water purification technology and machine vision floc-line detection methods. During the tests, the experiment consisted of detecting the flocs equivalent characteristics such as the...

This paper analyzes the new situation faced by the renewable energy development and new trend in xinjiang, expounds the renewable energy in the position and role of the future energy system, put forward the development strategy for the future of renewable energy targets and requirements. At the same...

In this paper, characteristics of distributed energy system powered by gas turbine and gas-fueled internal combustion engine are analyzed. System configuration scheme was designed based on meteorological condition, internal load demand and time of equipment utilization. Compared with conventional energy...

A new method of extracting interference fringe phase is proposed. Firstly, the interference fringe was transformed from the spatial domain into the frequency domain using the Fourier transform. The positive spectrum carried the wave-front information. Secondly, the digital filters were design to filter...

as the global resources is increasingly scarce and the environment is worse, people put forward the higher request for building materials and environmental protection. And bamboo is economy ,renewable and environmental protection. Apply bamboo instead of steel to concrete plate, increase the hollow rate...