In this paper, the influence of the number of bearing expanded-plate on the concrete expanded-plate pile is studied under horizontal force. Through the ANSYS software, the calculation model is established and analyzed on the basis of the comparison of the straight hole pile with the same length and the...

Quinoa belongs to chenopodium which is annual dicotyledonous plant. It was domesticated in the Andes in South America. Since quinoa was introduced into China in 2011, it has been quickly planted in several provinces including Shanxi, Qinghai, Gansu, Sichuan and Jinlin. At the present, the quinoa products...

In this paper, an experimental study and numerical simulation method was combined to research the impact of a power plant 600MW supercritical four walls tangentially fired boiler furnace OFA wind opening size on the inside furnace NOx concentration distribution and the results coincide. There are four...

Water quantity and quality such as COD, ammonia nitrogen and phosphate concentration of two functional areas including residential district and administrative area were obtained through the continuous monitoring and analysis of septic tank effluent's water quality and quantity in administration building...

In order to solve the common problems in digital relay protection test, this paper proposes a digital relay protection test auxiliary analysis function. This function is mainly used to analyze the abnormal situation that occurred during digital relay protection test, and reduce the processing time of...

For the rapid development of economy, China has seen more than 200 million kW capacity of hydropower plant installed and more than 55 billion m3 reservoir storage formed since 1950s. As a result, over 25 million resettlers have been wholly or partially affected. To displace and settle so many people...

With the quick pace of the development of cultural diversity, we pay more attention to the excavation of national characteristics. It is particularly urgent to dig deep to artistic feature and culture heritage of the traditional pattern with people aesthetic standards and the orientation of culture conception....

In Winter, due to the cold weather, the most of cities' landscape in northern China are in the "Semi-abandoned" status. Yellow vegetation , frozen water and idle facilities,these kinds of landscape effect is difficult to match the goal of landscape design. The study found that plant growth is not only...

In this paper, R1234ze and R32 will be mixed in 2 different proportions. And it will be used to make comparative experiments with a traditional mixed refrigerant (R410a) in air source heat pump water heater. By analysis the data of experiments some intuitive charts will be made. The results show that...

A NOX emission forecasting model was established for a supercritical 660MW unit boiler combined with random forest (RF) and gradient lift decision tree (GBDT) algorithm. The steady-state working point of the historical data is screened from the SIS system of the power plant. The feature feature of the...

Sandy conglomerate is the major sedimentary systems in the upper fourth member of Shahejie formation in Shengtuo area. In this paper, on the base of core observation and description, sedimentary characteristics are studied in the upper fourth member of Shahejie formationin Shengtuo area. The results...

In order to overcome the defects of emptying reservoir and abandoning water of discriminant criterion method in inter-basin reservoirs operation, this paper analyses the relationships between K value and its calculating time period, takes the minimum spillage storage line as the guide line of reservoir...

The electrical performance and mechanical properties of nearly 200 composite insulators operating in the power grid for over 5 years are tested, to grasp the current running state of composite insulators, While statistical analysis of their regional type, age, process and so on,the correlation between...

On the basis of classifying the landscape elements, the landscape pattern of the Dalonghu wetland park was analyzed with the principle of landscape ecology in this paper, The results showed that:(1) The landscape diversity of Dalonghu wetland park was high, but the distribution of the overall landscape...

The electrical system is an important component of equipment for tracking and controlling, so its fault will have a great influence on the performance of equipment for tracking and controlling. The electrical system structure of equipment for tracking and controlling is complex, with various types, so...

Currently, the most commonly used TCFs in the electronics industry is indium tin oxide (ITO). However, ITO has some inherent shortcomings, such as high cost and brittle nature, which limited its widespread application. Recent studies have investigated alternatives to ITO. Ag nanowires (AgNWs) is still...

In order to meet the demands of slag formation without fluorite the calcium ferrite pellet is developed in laboratory. The lime and iron oxides combining in different proportion are used as raw material of the calcium ferrite pellet. The melting properties of the calcium ferrite pellet is determined...

For DFIG-based variable speed wind turbines, the crowbar circuit is commonly used as protection method against sudden drop of the grid voltage caused by short circuit fault during the period of LVRT. And vector control for DFIG is presented in detail. Finally, the simulation results verify that crowbar...

This paper studied the anti-cavitation performance of the high velocity oxy-fuel(HVOF) Ni60 powder coating by experiments, and compared the anti-cavitation performance of 2 kinds of powder coating-HVOF Ni60 and HVOF NiCr, and compared HVOF Ni60 powder coating with oxyacetylene flame spraying Ni60 powder...

The purpose is to analyze the vibrational wave motion of finite coupled plates considering boundary conditions. Since reverberation ray matrix is a semi-analytical method, Local dual coordinate of each discrete plate was introduced to reverberation ray matrix method. The vibrational formulas of coupled...

At present, the crystallization method has become a hotspot in the field of wastewater treatment. The crystallization method not only remove phosphorus effectively in wastewater, but the phosphorus also can be recycled. The crystallization method includes ammonium magnesium phosphate crystallization...

Membrane separation technology, as an important water quality safeguards, has been widely studied and applied in water and wastewater treatment,because of its advantages ( low cost, convenient operation, no phase change and no secondary pollution). Compared with organic membrane, the inorganic ceramic...

Natural gas is usually on unsteady-state condition, the change of volumes and pressures will bring different economic benefit at different time, so that the operation of natural gas pipeline should be optimized to guarantee the safety. By analyzing the pressure and volume varying with time, scheme could...

In August 2011, chrome pollution incident happened in Qujing County, Yunnan, China, which caused the attention of the people all over the world. In this paper, the chrome hazards for the health, the routines of chromium residue and Cr-containing wastewater treatment process and the newest research progress--biological...

A power law relation between the filtration coefficients of straining and flux through small pores based on percolation theory has been reported. It was a monodisperse particle filtration theory, while the actual colloidal suspension is polydisperse particles. In this study, a formula of particle size...

Electrochemical degradation technology, being an environment-friendly way for the elimination of a broad-range of organic contaminants from water, is limited by low efficiency and high cost. In this study, an improved gas diffusion electrode (GDE) was constructed by rolling carbon black and polytetrafluoroethylene...

In order to solve the lack in specific evaluation and comparison standards on planning projects of distribution networks, which are widely spread in Chinese grid companies, an optimization and selection method for planning projects of MV distribution networks considering categorization of project attributes...

Parabolic trough CSP plant operates commercially in the most mature way, also is one of mainstream technology trends for future CSP generation in China. The parabolic trough CSP plant adopting high temperature molten salt delivers higher working temperature and efficiency. The generated electricity increases...

This paper presents a comprehensive review of the current state of research activities on the application of constructed wetlands for removing emerging organic contaminants (EOCs) from wastewater. The design parameters of the reported constructed wetlands including the physical configuration, vegetation...

To determine the chemical constituents of Selaginella doederleinii Hieron. The compounds were isolated and purified from the Ethyl Acetate Fraction from Ethanol Extract of Selaginella doederleinii Hieron by multiple chromatographic techniques including macroporous resin, polyamide, silica gel, Sephadex...

In this study, Shenfu crude coal and nitric acid-pretreated coal were solubilized by Bacillus amyloliquefaciens and Saccharothrix xinjiangensis. Around 7-8 % crude coal dry weight was solubilized within 15 days. The nitric acid pretreatment of the coal increased process efficiency by around 60% for Saccharothrix...

The process conditions of phanerochaete chrysosporium degrading photo-oxidizd Inner Mongolia Shengli lignite were optimized by orthogonal test, and the effect-weight order to degradation rate was coal pulp concentration > coal particle size > incubation time > inoculum size, the optimal process conditions...

In recent years, nanomaterials have attracted great interest from industrial community and researchers due to many reports showing that nanomaterials can be promising vehicles for in vitro diagnosis, in vivo tumor imaging and targeted therapy of many diseases in addition to being wide-spectrum antibacterial...

The optimum extraction process of total flavonoids from grape leaves and their antibacterial activities in vitro were investigated. Total flavonoids were extracted by Soxhlet extraction. The content of total flavonoids in grape leaves was determined with aluminum nitrate chromogenic Spectrophotometry....

The Zn₁₋ₓMnₓO(x = 0.05, 0.1, 0.15) diluted magnetic semiconductor powders were repared by hydrothermal synthesis at 220 heated for 24 h using NaOH of 3 mol/L and 5 mol/L as the mineralization agent. It is shown that there had a direct relationship between mineralizer concentration and hydrothermal synthesis,...

Charging and discharging control of centralized charging station becomes more important in power system operation. In order to achieve a load shifting and wind power stabilizing, this paper presents a two-stage optimal scheduling model for centralized charging stations based on the considerations of...

The optimal design of MBR system for oil film wastewater was introduced. The influence of aeration rate, aeration structure and reactor structure on the average cross flow velocity was studied. The average cross flow velocity between films was 1.25~1.28 M/s is a reasonable parameter to effectively slow...

A field study was performed in an urban eutrophic lake of Tianjin to investigate the distribution and diffusive flux of nitrogen species. Dissolved organic nitrogen (DON), accounting for about 98% of total nitrogen (TN), was the dominant component in sediment. Ammonium (NH4+ₓN) was the main component...

Audible noise generated by the corona of HVDC transmission line has become one of the major considerations in the design of high voltage transmission lines. To research audible noise space propagation characteristics duo to HVDC transmission lines is very important for the analysis of the spatial frequency...

In recent years, inorganic ceramic membranes have been successfully applied in water treatment because of their unique advantages. However, the membrane fouling problems during the application of inorganic ceramic membranes should not be underestimated. With the wide application of inorganic ceramic...

Ceramic membrane as an environment-friendly technology, is widely used in water treatment. In this paper, the structure and characteristics of the ceramic membrane are discussed. The application of the ceramic membrane in waste-water treatment is mainly discussed. It mainly includes the treatment of...

This Nondestructive inspection of mechanical equipment is to diagnose the mechanical the wear and corrosion of the machine under the condition of no disassembly.With the rapid development of port industry, the number of all kinds of port operating machinery is increasing, and the complexity of the equipment...

With crisis of coal, oil and natural gas and other fossil energy, people gradually turned to biomass energy, the preparation of methane is of great practical significance. Different alkali pretreatment can affect the anaerobic fermentation of corn stalk system. NaOH as pretreatment agent was added into...

Adsorption performance of catalysts and catalytic ozonation of organic pollutants from bio-treated dyeing wastewater were investigated. Among various catalysts, the granular activated carbon (GAC) showed the better adsorption performance for removal of COD from dyeing wastewater, and the adsorption capacity...

To study the contribution of the solar energy resource to reducing energy consumption of air-conditioned train running along the Qinghai-Tibet Railway, the No. z6811 air-conditioned train of 25T was chosen as the research object and the intensity of the solar radiation on the outer surfaces of the train's...

Wastewater treatment is a complicated dynamic process affected by microbial, chemical and physical factors. These variables are always uncertain. Due to the complex biological reaction mechanisms, the highly time-varying and multivariable aspects, the traditional analysis method in the description and...

The complex [Zn(C8H9N2O3S)(C8H6O5)(H2O)] (C8H9N2O3S = the Schiff base formed by 2-Pyridinecarboxaldehyde and taurine) was synthesized by reaction of Zn(CH3COO)2 - 2H2O. The crystal structure of the Zinc(II) complex has been determined and studied by X-ray diffraction. The complex is monoclinic, space...

3D porous graphene was fabricated by hydrothermal cross-linking method and template method, respectively. X-ray diffraction, scanning electron microscopy, fourier transform infrared spectrometry, BET, cyclic voltammetry and electrochemical impedance spectroscopy are used to characterize the microstructure...

The article aims to discuss the quality control methods for the surface hourly temperature observations. A new quality control method (RH-SRT) based on the spatial regression test (SRT) was adopted to identify potential outliers in the surface hourly temperature observations. The proposed method is an...

Combining with the environmental load characteristics in the East China Sea and the existing floating foundation types, by analyzing the applicability of the floating foundation in the target area, it is considered that TLP and Semi-submersible foundation are suitable for the floating wind turbine foundation...

Over the past several decades, the forward osmosis (FO) has attracted growing attention in many water and wastewater treatment processing. The main obstacles for forward osmosis developing are membrane fouling, concentration polarization (CP) and reverse solute diffusion. In this study, we reviewed these...

With the rapid development of seawater usage, the nitrogen and phosphorus removal of saline domestic wastewater is becoming a key problem in coastal areas. Conventional biological nitrogen and phosphorus removal technology always limited by some inevitable contradictions. The double membrane bioreactor,...

Originated in Italy, "slow city" model is a newly urban development model. The snail as a city's logo well reflects the value of "slow city" model. Slow speed is a spiritual pursuit of life for mankind. The number of cities all over the world, entitled "slow cities", is increasing while the concept of...

In this paper, two-stageASBR process composed of two anaerobic sequencing batch reactors (ASBR) was used as the reaction device to remove organic matter and ammonia nitrogen in high concentration nitrogen-containing organic wastewater,stage1 to adsorb and remove the organic matter, stage2 to remove ammonianitrogen...

This text studies coated material as the Rosin Glycerin Ester and preparation the coated -released-fertilizer, Studying the effects of soil moisture and temperature on nutrient release of coated compound fertilizer. The result shows that the temperature and soil moisture content have great influence...

Biomass energy is an important distributed generations and energy production, biomass energy utilization rate is very high. This paper focuses on the biomass power generation, photovoltaic power generation conditions, the load characteristics in Guangxi rural areas, were all analyzed by statistics, build...

A method using dispersive liquid-liquid micro-extraction (DLLME) and gas chromatography-mass spectrometry (GC-MS) was developed to analyze geosmin(GSM, trans-1,10-dimethyl-trans-9-decalol) and 2-methylisoborneol (2-MIB) in source water. The mass spectrometry was operated in selective ion monitoring (SIM)...

The waste heat utilization rate of the waste heat utilization system of large-scale comprehensive hospital is analyzed, and the maximum recovery work of waste heat is obtainedOn the basis of the above analysis, according to the actual situation of large comprehensive hospital waste heat utilization system...

This paper is to study the effects of different mixed planting patterns of Chinese fir (Cunninghamia lanceolata) on nutrient contents in plant. One-year-old seedlings of C. lanceolata were used and mixed plantation of C. lanceolata with both Michelia macclurei and Schima superba in high planting density...

Using typical fish samples collected in the north Pacific on 2011 to 2012, adopting High Purity Germanium (High Purity Germanium) passive scale efficiency detect gamma spectrometer, radioactive nuclide 134Cs was detected in all samples. Using classification and sub-organs and other treatment methods...

Multi-walled carbon nanotube (MWCNT)/Pb-Sn composite coatings and Pb-Sn alloy coatings were prepared by electrodeposition technique, respectively. The Internal stress of the coatings was studied through changed the Process parameters and the binding force of the coatings were compared through Thermal...

The recycling and transportation of urban living waste is one of the common basic tasks to ensure the normal operation of the city. Aiming at the acceleration of urbanization and the increasing quantity of living waste, this paper proposes an "Internet +" urban garbage classification recycling and transportation...

The hyperbolic curve model is erected, the least square method is used to obtain parameters of the hyperbolic curve model, parameters of the hyperbolic curve model are regarded as state vectors to contain dynamic noises to erect Kalman filter model based on the hyperbolic curve model, on the basis of...

The advancement of electricity market reform and the outline of "Social Credit System Construction Plan" of the State Council all require the power industry to pay close attention to the construction of the electricity market credit system. In addition to the credit rating and credit regulation of power...

the mathematical model of thermal stress field and temperature field are built for the main member lay with different dropping velocity of temperature.the analytic solutions for the temperature and thermal stress are obtained by the integration transformation.the numerical results are shown in Figs.The...

Photovoltaic power is increasingly concerned in the field of new energy. Photovoltaic modules simulation can provide theoretical basis for photovoltaic power system. In the paper, it is introduced that, construct testing model, draw output curve, set different parameters in the model, and process the...

Nanoscale bimetallic Fe/Cu mesoporous carbon supported alumina hollow ceramic membrane were successfully synthesized by spin-coating method. The morphology and physico-chemical properties of catalyst were characterized by XRD, SEM, TEM. The performance of the catalysts was evaluated by the adsorption...

Energy consumption has seen a sharp increase with the rapid sci-tech development in China, which leads to an urgent demand on efficient, scientific and reasonable energy management methods to predict and evaluate energy consumption and improve the energy utilization rate. Based on the theory of grey...

Intrinsic microcrystalline silicon thin film were prepared by VHF-PECVD, the activation energy of thin film were measured by activation energy testing equipment. The activation energy of samples with different crystalline volume fraction were studied. The results showed that: the activation energy of...

Energy conservation and pollution reduction are two of important subjects of sustainable development. Straw recycling not only can achieve the maximization of resource utility, but also could reduce environmental pollution caused by straw burning. How to set up an efficient straw recycling network is...

Orthogonal experiments were carried out in a fixed reactor to investigate the optimum operation conditions of co-pyrolysis of Hongying coal (HC) and eichhornia crassipes (EC) with the index of tar. The results showed when biomass ratio was 35%, final temperature was at 550 , particle size was 0.355-0.500mm...

A multi-criteria score-based method has been developed to assess General Circulation Models (GCMs) skill in the Yellow-Huai-Hai region for 1970-2005. The rank score of these criteria are applying to comprehensively assess the temporal and spatial performance of precipitation and temperature of 18 GCMs...

This paper mainly study the mechanism of removing COD of oilfield wastewater by oxidation, coagulation and oxidation-coagulation. The results show that with the increase of oxidant 1# dosage, the total content of the organic matter in wastewater reduces with removal rate of organic matter significantly...

This paper discusses the new progress and field application of CO₂ flooding in low permeability oil field to improve oil recovery. The study shows that CO₂ flooding can improve the oil recovery rate of low permeability oilfield by more than 10 %.The practice shows that the liquid CO₂ injection in low...

Taking overlap joint as the object, it simulates welding process. And it obtains residual stress and distribution curves. By simulating the equivalent form of tack welding, it discusses the influence of tack welding by XYZ displacement constraint, X displacement constraint, node matching and adhesive...

The Construction Waste (CW) treatment resources have increasingly aroused concern because the CW disposal industry involves many subjects, including the unstable supply of raw materials and sluggish sales of recycled products and other characteristics, and industrial development hasn't yet reached the...

This article do research into experimental technology of corrosion simulation at high temperature and high pressure and has formed an integral set of simulating experimental device basing on the technology. This technology includes injection system, simulated reaction still, research on vapour-liquid...

The biological effects and cytogenetic damage induced by diesel on root tips cells of Scirpus triqueter explored in this study. The results showed that the root length and weight decreased obviously with diesel concentrations increasing. The mitotic index in root tip cells of seedlings were increased...

Adsorption properties of polycyclic aromatic hydrocarbons (PAHs) on intrinsic graphene quantum dot and graphene oxide quantum dot were studied by local density approximation of density functional theory with empirical dispersion correction (LDA+DFT-D). Relevant thermochemical parameters including the...

Aircraft water ingestion tests on water-contaminated runways is of great significance in the civil aircraft airworthiness certification. It is a very complex strongly nonlinear multi-physics process involving tire-generated water spray and engine spray ingestion. An integrated simulation platform, which...

A method for applying FPGA to realize the Harris corner detection and matching, aiming to overcome the problem that it is slow to fetch feature information from the image which show the planar motion of robot. Considering the theory of Harris corner detection and the structure of FPGA, the algorithm...

In order to make the tank armor vehicles lightweight, miniaturization, precision and high speed, a non-speed-sensor direct torque control strategy based on magnetic chain model reference adaptive systemÿ(MRAS) was designed, and the MRAS identification method based on the full-order adaptive state observer.Using...

Bacillus cereus is a gram positive, rod shaped, and most abundant bacteria in the nature. In this paper, we intended to focus on the inactivation and morphological and physiological changes of the bacillus cereus with various time periods of atmospheric pressure dielectric barrier discharge (APDBD) plasma...

Atmospheric pressure plasma is a great technique in plasma science, which was implemented in our research. To study the biological changes in two pseudomonas strains in terms; type of plasma, exposure time and power discharge in the plasma. Scanning electron microscope (SEM) was used to determine the...

In this paper, the sectionalized and blocked hydraulic lifting technology is proposed directing at the complex hyperboloid-shaped weld ball-node grid structure of the newly-built airport terminal in Xinjiang Korla Airport. Firstly, Numerical simulation is made to the sectionalized hydraulic lifting process,...

The addition of nano-SiO₂ to 20% silane coupling agent is carried out using anhydrous ethanol as the solvent in the presence of acetic acid. The styrene-butadiene-styrene (SBS) is added with 1% dicumyl peroxide crosslinking agent by adding 5% maleic anhydride grafted polyethylene to be modified on an...

Hydrogen is expected to replace part of the fossil fuels in the future. Distributed wind and solar power is possible to produce hydrogen as an important primary energy source in order to enhance flexibility in energy distribution. The object of study is electricity-heat-hydrogen energy station composed...

China is characterized by vast territory and wider distribution of strong wind easy-happening areas (typhoon, tornado and squall line wind). Meteorological environment conditions are complex and harsh in power transmission line corridor passage (especially in alpine regions). Safe operation of power...

In this paper, a type of shield tail sealing grease, composed of basic oil, thickening agent, lubricating grease thickener, lubricating grease, biodegradable fiber and inorganic fillers, was prepared by means of a physical mixing process. In addition, various properties such as density, cone penetration,...

The degradation of anthraquinone dye reactive brilliant blue (KN-R) by Fe(III)/H₂O₂ system was investigated in details. The results demonstrated that KN-R was degraded efficiently in the Fenton-like reaction system. 94.40 % removal of KN-R in solution (pH=3) was reached after 40 min when the initial...

In this work, the spectrum of nitrogen triboplasma light emission and the influence factors of the light intensity had been investigated by a reciprocating friction experiment platform based on the quartz and polytetrafluoroethylene (PTFE) as the friction pair. The results show that the spectrum of nitrogen...

With the development of new types of urbanization in China, the layout and planning of towns is increasingly influenced by large cities and the design of towns tends to be the same as that of cities. As an emerging city construction model, "Slow City" model is devoted to protecting the original natural...

The low concentration of hydrochloric acid produced during the separation process of rare earth no saponification extraction is best available for recycling. The adsorption and desorption characteristics of N235 resin on dilute HCl solution were investigated by static adsorption method and dynamic adsorption...

Big data service is a new data resource model and a new service economy model, which encapsulate all kinds of big data operations, to provide consumers with services everywhere, standardization, on-demand retrieval, analysis and visualization service. An unstructured data model based on agent behavior...

Based on Activated Sludge Model NO.1 (ASM1) in wastewater treatment plant (WWTP), the models of single-feed and step-feed process were established. The components removals in two types of feed processes were simulated by Matlab Simulink. The results show that organic matter removal and heterotrophic...

The instability of natural anthocyanins was a big obstacle for its usage. In order to improve the stability of anthocyanins, molecular modification was used. In this paper, the molecular modification of blueberry anthocyanins was acylated by using aliphatic carbonyl acids (acetic acid, oxalic acid, heptane...

Urbanization is a target and result of economic development in China. Urbanization has changed the type of urban land use, and also affected the soil carbon cycle of urban ecosystem. In this paper, the land use change characteristics and soil carbon content in different land use types of urban ecosystem...

with the promotion of the concept of sustainable development, green building design is more and more widely used in architectural design. This article has carried on the research to the green building design present situation, has analyzed the green building design idea content and the principle, and...

Experiments were conducted in order to understand the merging process of co-rotating equal strength vortex pair in channel flow with different pressure gradient environment. Cross-flow velocity measurements were performed at a series of downstream locations under zero, favorable and adverse pressure...

The integration of a large amount of renewable energy into the distribution network brings the severe consumptive problem. Compared to the traditional storage methods, in this paper, we propose a new solution which is to convert electricity into hydrogen by the electrolysis cell. What's more, by methanation...

In the first part of the paper, the models of electrolysis cell and AND were presented. Based on the models, the optimal model with the consideration of the network operation constraints in the distribution level is presented in this paper. Case studies were carried out to prove the advantages of the...

In order to reduce outage time of the transformer after the single-phase fault, the fault phase is considered by using the spare device with similar parameters. However, the use of single-phase transformers with similar parameters to replace can lead some problems of operation because of the different...

Some areas have raised discharge standards for effluent total nitrogen (TN) concentration in China. However, the main component of effluent TN in the wastewater treatment plant is nitrate nitrogen (NO3--N). This research focuses on TN removal using deep-bed denitrification filter, the hydraulic retention...

PV and energy storage integrated grid-connected converter (GCC) is used popularly in distribution generation (DG) system. As there is a significant increase in the size and capacity of grid-connected power plants, the stability and reliability of the grid become more important. Different from the traditional...

Shield tail grease is very important to the tightness and durability of shield tail structure,and the consumption is very large as well as the construction has been accelerated. At present the related indexes of shield tail seal grease has no uniform standards, in the actual construction process for...

The vibration of belt in the process of automobile synchronous belt transmission directly influence transmission smoothness, and produce noise and affect the service life of the belt. In this paper, through the establishment of mathematical model of belt transverse vibration in the process of synchronous...

Pre-oxidation is widely used to remove synergistically algae, odor and natural organic matter (NOM) for drinking water treatment. Permanganate (KMn₄), ozone (O₃), and hydrogen peroxide (H₂O₂) in combination with polyaluminum chloride (PAC) coagulation for assisting the removal of NOM and disinfection...

Silver nanoparticles (AgNPs), as a new material with good properties, has been widely used in many fields. With the increasing production and usage of it, more and more AgNPs are entering the water environment, which was suspected to impose ecological risk to the aquatic ecosystem. Based on the acute...

In this paper, by studying the principle of binocular stereo vision 3 d scanning imaging and scanning data splicing method. The author uses the binocular stereo vision method make a 3D scanning for parts and use NURBS curve reconstruction technology for reverse design of parts.

Pretreatment of lignocellulose is a key step in a commercial biorefinery. To increase the cellulose mass fractions and enhance the enzymatic hydrolysis, sugarcane bagasse was pretreated with methods of dilute acid, dilute alkaline and acid coupled alkaline. The efficiency of these three methods is compared....

The cadmium (Cd) accumulation characteristics of Lycopersicon esculentum seedlings were studied by the pot experiment, and different soil Cd concentrations (0, 1, 5, 10, 15 and 20 mg/kg) were used. With the increase of soil Cd concentration, the biomass and photosynthetic pigment content of L. esculentum...

To study whether the hybridizing could promote the growth of F1 hybrids of vegetables under heavy metal stress, a pot experiment was carried out to investigate the effects of reciprocal hybridizing on growth of F1 hybrids of two genotypes of Brassica juncea var. megarrhiza under cadmium (Cd) stress....

To study the effects of intercropping on nutrient absorption of plants under cadmium (Cd) stress, a pot experiment was conducted to study the effects of intercropping with four Bidens species (Bidens bipinnata, Bidens pilosa, Bidens parviflora and Bidens biternata) on the nitrogen (N), phosphorus (P)...

To study the effects of cutting after grafted on nutrient uptake of wild vegetables, four rootstocks (Brassica pekinensis, Brassica napus, Raphanus sativus and Rorippa dubia) were used to graft Nasturtium officinale, and then cutting the seedlings of scions and planted in selenium (Se) contaminated soil....

This paper, aimed at the magnetic resonance contactless power transmission system based on PSSS topology, analyzes the stability of the system resonant frequency when the load and the mutual inductance are changing and proposes the method of constant frequency control based on the technology of dynamic...

In order to find a turbulent flow model which can accurately describe the internal mixing process of the nozzle adjustable jet pump, 8 combinations made up by four turbulence models (Standard κ–ξ, RNG κ–ξ, Realizable κ–ξ and RSM) and two wall functions (Standard wall functions and Non-Equilibrium wall...

CGMCC5515(Rifr) were domesticated step by step. Pb-resistant bacteria (PbRB) of CGMCC5515 were selected in directional enrichment and screened with TTC from the pot rice rhizosphere soil with lead and other remediate material, the reverse screen model of simulation soil rice culture with reproducible...

The straight-bladed Darrieus type vertical axis wind turbine (SB-VAWT) has received considerableÿattention due to relatively high efficency of wind energy and simple blade design. Slection of airfoil is crucial for aerodynamic characateristics of SB-VAWT. A numerical investigation into performance of...

Through the experimental test and cfd numerical simulation of the new valve body of the adjustable wearable orifice plate, it is proved that the orifice plate has good stability and regulating performance for the air volume of the dust-removal system under different pressure fluctuations. In view of...

In order to simulate the influence of excavation on the whole strength, deformation and failure of rock mass, uniaxial and pseudo-triaxial compression tests on solid and hollow cylinder specimens of marble without inner pressure were carried out with servo-controlled rock testing machine. The results...

Angle sensor and positioning orientation device is the basis of achieving the goal sharing and collaborative combat.In order to achieve the absolute angle measurement between the turret and body.The paper presents two possible solutions:the first program uses the non-gap fork lever mechanism,combining...

Traditional villages have unique natural environment and cultural deposits, which have become hot spots of tourism exploitation. However, as a special landscape form and cultural connotation of rural cultural landscape, its resources have the characteristics of scarcity. In this paper, based on the perspective...

This paper introduces the application of fault diagnosis technology at home and abroad, and puts forward the way of applying the fault diagnosis technology of special vehicle electrical system. This method is conducive to improving the capabilities of vehicle electrical system fault diagnosis, and reduces...

The oxygen blast furnace (OBF) is a new ironmaking technology. The coke rate and carbon dioxide emission can be decreased greatly in the OBF process. In the OBF process, the room-temperature oxygen is blown and the preheated top gas of CO₂ stripped is recycled into the furnace. The recycled gas has various...

The photodegradation of humic acids (HA) in aqueous solution was carried out in the presence of Fe(III) and oxalate, and the influence of inorganic ions, such as Ca2+, Mg2+, HCO3- and H2PO4- on HA removal was investigated. 88.9 % removal of HA in solution was reached after 75 min with Xe lamp irradiation...

Aiming at the insufficiency of thermal comfort standards of naturally ventilated buildings, the domestic existing thermal comfort evaluation models are introduced, including revised PMV models, climate adaptive models and its revised models. The results show that building energy saving potential can...

Sugarcane bagasse cellulose (SBC) was dissolved in three imidazolium-based ionic liquids (ILs) [Emim]DEP, [Emim]Ac and [Bmim]Cl at the same conditions (1% mass loading, 110 ). Among the three ILs, [Emim]DEP has the highest dissolution rate and regeneration yield of SBC. Both the original and regenerated...

A pot experiment was carried out to study the effects of two ecotypes mutual grafting on nutrient absorption of post generations of Solanum photeinocarpum under cadmium stress. Two ecotypes mutual grafting increased the total N, total P contents in roots, stems and leaves of post generations of S. photeinocarpum...

To study whether the hybridizing could reduce the growth of F1 hybrids of vegetables under heavy metal stress, a pot experiment was carried out to investigate the cadmium (Cd) accumulation characteristics of F1 hybrids by reciprocal hybridizing of two genotypes of Brassica juncea var. megarrhiza under...

A pot experiment was carried out to study the effects of intercropping with four cadmium (Cd) hyperaccumulator plants (Galinsoga parviflora, Sigesbeckia orientalis, Solanum nigrum, Crassocephalum crepidioides) on nutrient uptake of grape seedlings under Cd stress. When grape seedlings intercropped with...

The effects of mutual grafting on the photosynthesis of two ecotypes of post generation Solanum photeinocarpum under cadmium (Cd) stress were studied by the pot experiment, and the photosynthetic pigment contents, photosynthetic characteristics and soluble sugar contents in post generations of S. photeinocarpum...

Taking the turntable of the crane as the object, it simulates the equivalent forms of process reinforcing in the large floor of the turntable. And it obtains welding deformation. By simulating the equivalent forms of process reinforcing, it discusses the influence on welding deformation by rigid fixed,...

The effects of exogenous melatonin on growth and physiological characteristics of Chinese cabbage seedlings under 50?mol/L aluminum stress were studied by spraying 5 different concentrations of MT(0 50 100 200 400) mol/L solution on leaves in Chinese cabbage seedlings. The result showed that exogenous...

A pot experiment was conducted to study the effects of the growth and physiological characteristics by spraying 5 different concentrations (0, 50, 100, 150, 200 mol/L) of indoleacetic acid (IAA) on leaves in Chinese cabbage seedlings which under salt stress. The result showed that IAA significantly promoted...

A pot experiment was conducted to study the effects of spraying leaves of Chinese cabbage seedlings with different concentrations of indoleacetic acid (IAA) on the physiological characteristics of Chinese cabbage seedlings under aluminum stress. The results showed that, spraying IAA could increase photosynthetic...

In the robust control theory, the norm boundary of uncertainty set (i.e. the uncertainty level) is an important issue. When the level of uncertainty is too large, the results will be too conservative, and when the uncertainty is too small, the results will be too optimistic. Two methods for determining...

Alpinia officinarum Hance, one of the local herbs in Guangdong, has the rich content of flavonoids and is one of the most commonly used traditional Chinese medicines for the treatment of gastrointestinal tract regulation, smooth muscle spasmolysis, immunoloregulation, antioxygen, tumors, diarrhea, and...

The effects of nitrogen (N) and potassium (K) fertilizers on fruit qualities of blueberry 'Legacy' were studied. A field experiment was conducted using randomized block design. The results showed that the fruit weight and total soluble solids content of blueberry were significantly increased by fertilizations....

This paper establishes the stratosphere propeller geometry model, using Pointwise software to generate grid structured grid. The flow field of the propeller at the altitude of H=20km in different wind speed and different rotate speed are simulated using the software FLUENT. The SST turbulence model and...

In order to find out the influence to fault based on fully-mechanized sublevel caving of thick coal seam, the software UDEC was used to establish the numerical model. The measuring points were arrangeed on the coal seam roof every 100m to monitor the relative displacement of upper wall and footwall under...

The perovskite cathode material of SrFe0.9Sb0.1O3- (SFS) was prepared by glycine-nitrate process (GNP). The SFS oxides sintered at 1150,1200 and 1250 §C for 10 h were crystallized into a single phase perovskite structure, respectively. The effect of sintering temperature on crystal structure, conductivity...

Dietary fiber obtained from mango peel (MPDF) by fermentation with lactic acid bacteria and ultrafine grinding was treated by dynamic high-pressure homogenization (DHPH). And the effect of DHPH conditions on composition and physicochemical properties of mango peel dietary fiber was investigated by determining...

In this paper, the influence of serial resistance Rs and shunt resistance Rsh for PV cells are studied. The series resistance Rs has a great influence on the output characteristics of the PV cells. Therefore, it is particularly important to solve the value of Rs for the model of solar cells. Rsh is very...

A pot experiment was carried out to study the effects of exogenous abscisic acid (ABA) on the resistance of Capsella bursa-pastoris under salt stress. Spraying ABA increased the root, stem, leaf and shoot biomasses of C. bursa-pastoris under salt stress. ABA applications also enhanced the plant height...

A pot experiment was carried out to study the effects of exogenous abscisic acid (ABA) on the photosynthesis of Capsella bursa-pastoris under salt stress. Under salt stress, the chlorophyll a, chlorophyll b and total chlorophyll contents of C. bursa-pastoris showed no obvious changes at low ABA concentrations...