To explore the effects of different soil water potential of tillering stage on rice yield and physiological traits in saline-alkali soil, using four treatment levels of soil water potential of 0 kPa (H1: soil moisture), soil water potential of -15 kPa (H2), soil water potential of -30kPa (H3), and CK...

In view of the current problems in the process of implementing safety management system in building construction in our country, one model was established for safety evaluation on building construction with taking expert scoring as network input, security class as the output based on Hopfield neural...

By means of 3 d laser scanning technology has rapidity, non-contact, high density, high precision features, such as the mining subsidence area on the station point cloud data registration, denoising, model building, such as pretreatment, can get real and effective information and visualization expression...

In this paper, through assay scavenge box drain tank iron (Fe) content in the oil and alkali value, calculate the wear volume and fuel sulfur (S %), optimization of cylinder filling factor ACC, concluded that the best cylinder oil injection rate and injection timing. In order to improve the cylinder...

Remanufacturing technology is an emerging technology, which is widely used in industrial field, since it prevents the recast of waste and outdated components through remanufacturing them again and guarantees that the quality of remanufacted components is not lower or even higher than new products. By...

It is derived an approximate analytical solution of one-dimensional Richards' equation (RE) with Brooks-Corey model in this paper. The approach is based on the introduction of Boltzmann transformation and construction of an intermediate variable for approximation. In the end, one illustration is given...

As an excellent insulating medium, sulfur hexafluoride (SF6) is widely used in electrical equipment, despite its high global warming potential. Besides, a series of hazardous decomposition products can be formed after long-term use of SF6, so it is very important for power companies to recycle SF6 in...

Breeding contaminant is one of the important pollution sources of the rural ecological environment. It is an effective way to control environmental pollution that the solid waste and wastewater generated in captive breeding is used as resource. Propose a circulation agriculture model with "planting-breeding-biogas-fertilizer"...

Environmental pollution, climate change, energy tension is now the global prominent question, the development and utilization of renewable energy to become one of the key measures to solve these problems. Wind power acts as a kind of safety, environmental protection, clean, abundant renewable energy...

In this paper, expansive soil is mixed with CKD in different proportions, and unconfined compressive strength test was conducted on the specimens with a certain initial water content and dry density. Unconfined compressive strength test were also conducted for specimens maintained for different curing...

This paper is devoted to describe the variation trend of temperature and humidity in the glasshouse in summer during the working of the four main cooling systems, i.e. natural ventilation system, mechanical ventilation system, wet curtain cooling system.Then, set up the quantitative relationship between...

In the process of spray pyrolysis, the pyrolysis temperature, particle residence time in the hot zone and so on impact of the product crystal form. Spray pyrolysis is used to synthesize CeO2 on γ- Al2O3 support. The pyrolysis temperature is at a range of 900~1100 , with a particle residence time in the...

Redundancy design scheme and control strategy of the energy management system for a stratospheric airship are proposed, which use the coordination control between the photovoltaic cell and lithium battery to maintain the DC bus voltage constant, so as to guarantee the stability of the motor load. The...

Using Daqing natural sand packed tubular model, the length is 20 cm, 50 cm and 100 cm, and the permeability was (343~482)ž10-3 m2, the injection rate is 1m/d and the experiment temperature is 45 , by the experiment of dynamic adsorption, studying the interfacial tension changes and viscosity changes...

Due to the inherent fluctuation nature of wind power, voltage control and frequency regulation in China's power grid become more intricate as the wind power penetration level increasing. Provided with traits of comprehensive response and bidirectional output, wide concern has been arisen by the hybrid...

Semi-rigid solar array is an efficient energy system on the surface of stratospheric airship for utilizing the solar energy which we believe has succeeded in providing some useful results for conceptual design. Their core consists of: To improve the flexible of rigid solar cells, a multilayer composite...

This paper proposes a multi-objective optimization model for the dispatch of the integrated community energy system which is composed of an electricity sub-system, a heat sub-system and a natural gas sub-system. Two objectives, the daily operation cost and external pollutant cost are selected as the...

Gas diffusion model can provide important analytical data in the detection of toxic gases., and the commonly used gas diffusion model has Gaussian plume model, Gaussian puff model and gas turbulence model. In this paper according to actual atmospheric environment of Sinopec Maoming Branch of ethylene...

AnÿearthquakeÿofÿM5.8ÿoccurredÿinÿAlxa of InnerÿMongolia onÿAprilÿ15,ÿ2015.ÿThereÿareÿ39ÿgroups of strong-motionÿsignalsÿrecordedÿbyÿthe NationalÿStrongÿMotionÿNetworkÿCenter. PGA andÿinstrumentalÿintensityÿdistribution characteristicsÿis obtainedÿfrom accelerationÿresponseÿspectrum analysisÿtoÿtheÿstrongÿmotion...

This paperÿused the measured data of water level and flow on the cross-sections of middle and lower Yangtze River during flood season (May-September) from 1981 to 2015. According to the evolution of the state of river course, flood and sediment, we calculated the flood routing with the improved Great...

In view of principle greening the basic design of the road in China, introducing the advanced concept of forest carbon sequestration, combined with afforestation project of carbon measurement and monitoring guidelines, to establish the quantitative and monitoring model of highway plant carbon sink. In...

Using pot experiment to study the effects of chicken manure compost (CM) on the production of dissolved organic carbon (DOC) and the degradation of p, p'-DDT in loam soil under three different water conditions. The objective of this study was providing theoretical basis for the remediation of pesticide...

According to the difference between platform's and play loads' put-in voltage, a design of power transmission and management system for SPS is proposed, in which high and low voltages hybrid power supply technology is applied. The electrical power from SPS to the earth can be transmitted efficiently,...

Based on input-output table and energy consumption balance sheet of Guangdong Province in 2012, this paper formulates non-competitive energy input-output table of Guangdong Province, and calculates energy consumption intensity, carbon intensity and sensitivity coefficient of carbon emission reduction...

In view of the traditional brake system and method exists the problems of the impact on wind power system is too serious and power generation efficiency is too low, this paper provides a kind of brake system and method that can improve the power generation efficiency and service life of wind power system....

Sudden water pollution accidents have great harm to the ecological environment of human society. In recent years, the water pollution accident has been the main content of the environmental pollution accident in our country. It is very necessary to simulate and evaluate the impact of sudden water pollution...

Release law of heavy metals from waste rock are significant to the heavy metal pollution control in nonferrous metal mining-area. We took the waste rock of Dexing Copper mine as the object and carried out the leaching experiment with with simulated acid rain(pH3.0, pH 4.0, pH6.0 and pH8.0) which were...

The effects of three surfactants (Tween 80, saponin and monorhamnolipid) on the hydrolysis of alkali pretreated rice straw by low dosage of cellulase were studied. The results indicated that with a relatively low cellulase dosage (4 FPU g-1 substrate), all surfactants were able to enhance the enzymatic...

This study aims to identify the composition and distribution characteristics of plant flora of Urban Ecological Wetland Park in Tianjin Lingang. Results show that plant species of Wetland Park in Tianjin Lingang are relatively rich.There are 246 vascular plants from 171 genera and 73 families.16 families,37...

In recent years, pumped storage power station with its unique static and dynamic benefits has been vigorously developed. But throughout the current set and operating experience of the Pumped Storage Power Station in our country, there are always some faults happens in the auxiliary power system when...

Historic changes have taken place in landscape of Qiang's settlements since Wenchuan Earthquake in 2008,which had effects on Qiang people's material life and spiritual life greatly. Studying landscape of Qiang's settlements based on spiritual homeland is an important way to examine whether the material...

The zirconium modified SCR catalysts were prepared by impregnation method, which exhibited high anti-poisoning properties. The optimal property was obtained by the zirconium modified SCR catalyst with Zr/V molar ratio of 1.0. The catalyst samples were characterized by the methods of BET, X-ray diffraction...

Tunnel construction is a livelihood project, but the nature of all kinds of complex geological problems will cause some impact on them. Therefore, it is necessary to carry out the geological investigation in order to ensure safety and stability of the tunnel, and the geophysical prospecting method is...

Carbon anode is an important material of aluminum electrolysis, its performance directly affects the aluminum electrolytic consumption and the quality of the electrolytic aluminum. The control range of ingredients is determined by the meaning of mixing, the quality control point is determined by coupled...

At present, disadvantages regarding energy conservation and environmental protection of shipboard incinerator still exist. To tackle this problem, measures in terms of energy conservation such as waste-heat utilization and high-temperature dehydration, and of environmental protection such as thermostatic...

For further study on the principle and characteristics of multi-terminal VSC-HVDC system under the condition of the AC/DC hybrid power grid, firstly, this paper establishes the model of three-terminal VSC-HVDC system based on PSCAD/EMTDC. Secondly, according to the different transmission properties between...

With the continuous expansion of grid, Pumped Storage Power Station in the protection of the role of the power system safe and economic operation is more and more prominent. Pumped Storage Units under the condition of the transformation from the generator operation mode toÿthe electric operation mode,...

Based on the theory of EKC curve, industrial waste water, industrial waste gas emissions (take SO2 as a representative) and industrial solid waste are selected as the environmental indicators. GDP per capita is used as economic indicators. According to the Huaihe River in five provinces in 2004-2014...

The Ultra High Voltage power system plays an important role in alleviating the energy crisis. However, due to the high voltage level and complex operation, it will bring disaster to the system once the power grid fails, causing cascading failures and large area power outages. In this paper, we study...

The inner evolution process of industrialization were studied by the mechanism of the industrialization and Cobb-Douglas production function. The data from 2004 to 2014 in the national, Guangdong province and Guangxi province were quoted to study the trend of the industrial structure variation .The results...

The quality of ambient air has significant effect on the production and life of human beings, and the PM2.5 is of great importance for the environment and heath. This paper presents the investigation on the regional, seasonal and daily characteristics of PM2.5 in Kunshan, China in 2013 by setting 7 sampling...

Flame distortion induced by shock waves frequently occurs in natural and human activities. To deeply understand the characteristics of flame distortion and combustion, a two-dimensional numerical study of a spherical flame distortion induced by a planar incident shock wave and its reflected wave was...

Considering the stability analysis theory of multi-infeed high voltage direct current (HVDC) system, the transmission capacity analysis method of multi-send ultra high voltage (UHV) AC/DC power grid is studied in this paper. By extending the multi-infeed short circuit ratio index, we can get the multi-send...

A membrane deposition and growth model based on fractal theory was developed. This model can dynamically describe the fouling process on the outer surface of membranes. Using this model to change boundary conditions and initial particle production probabilities, the process of membrane deposition and...

Abundant soluble magnesium salts with low impurity were produced as by-product in some industries of Qinghai. These soluble magnesium salts were exploited more easily than some solid minerals, such as magnesites, dolomite minerals, which could accord with the standards of electrolytic process for preparing...

This paper analyzes the environmental characteristics of the Arctic region and the factors that affect the construction efficiency of power transmission and transformation. Considering the climate and environmental characteristics of the Arctic region, the paper goes further to discuss the protective...

This paper discusses in detail the characteristics of the Arctic region environment and the difficulties in constructing wind farms there. Considering the characteristics of the Arctic region environment, the paper analyzes major construction works such as material transportation, foundation construction...

To improve a secondary CNG filling station's refueling effectiveness and reduce its operation costs, the abnormal CNG refueling behaviors or outliers are empirically studied. Firstly, the central tendency and dispersion of volume and pressure change is empirically studied, and the simple regression model...

The aquatic environment is challenged with complex mixtures of pollutants, which may produce synergistic or antagonistic effects in organisms, interacting on the established biomarkers. This study focuses on the interaction on biomarker responses in male goldfish (Carassius auratus) after co-exposure...

This study was carried out to evaluate the water quality of West Lake in Guangdong Ocean University with the method of single factor and comprehensive water quality identification index based on the data investigated from four sampling sites in May, September and December of 2013 and March of 2014. The...

The study conducted a pilot-scale research on the effects of Coagulating Sedimentation after Oxidation with Sodium Hypochlorite applied to advanced treatment of Traditional Chinese Medicine Wastewater. Under optimum conditions (i.e. a NaCLO dosage (400 mg-L-1), a Polyaluminium Chloride dosage (40 mg-L-1)...

Purple soil is one of important agricultural soils in China. However, widespread soil acidification and soil fertility decline have limited the sustainable use of the purple soil in recent decades. Biochar, derived from agricultural waste such as rice husk, shows great potential for controlling soil...

Polycrystalline samples Li0.35Zn0.3Fe2.35-xGdxO4 (x=0,0.02,0.04,0.06,0.08,0.10) were prepared by sol-gel auto-combustion method.The XRD analysis shows that the samples are cubic spinel ferrite, the lattice parameter increased and the average grain size decreased with Gd3+ ions concentration increasing.The...

Flue gas assisted steam gravity drainage technique (SAGP) is a both economic and environmental approach to improve heavy oil reservoir development effect, which can control steam chamber growth, save thermal energy and reduce greenhouse emission. Based on the problems of a pilot SAGD reservoir at Liaohe...

A drag type of continuous layered fracturing bottom sealed packer has been developed to elevate fracturing efficiency. Adopt mechanical lift and lower the string to implement the sealed and unsealed; the sealing structure is simple, rubber sleeve is short and performance of seal is stable; the anchoring...

This paper analyzed the relationship between altitude and soil factors in dry - hot valley, based on gray relational grade analysis method for quantitative analysis, and Cluster analysis of the associated degree. The results showed that: altitude most closely with the available nitrogen, followed by...

For the speed control of diesel engine, this research obtained data on a variety of key indicators by testing electronically control diesel engine in practice. Based on the data, we analyzed the impact of fuel injection quantity on speed control and its applicability to the variable structure system...

This paper present a parallel partition power flow algorithm applied to ac grid based on two layers of tree structure. The algorithm introduces network partition thought in Newton-Raphson power flow algorithm and form two layers tree model to realize the fast calculation of the nodes voltage correction....

From the reed surficial biofilm isolated a strain of algicidal bacteria B2 have significant algicidal effect of Microcystis aeruginosa. By means of microscope and scanning electron microscope and monitoring the change of pH in the medium of B2, we found that the dissolved algae bacteria B2 was dissolved...

The influence of pyrolysis water which was used as molding water of powdered coal on molding coal pyrolysis conversion rate and semi-coke strength was experimentally researched in the pyrolysis experimental device independently developed by Beijing Shenwu Environment & Energy Technology Co., Ltd,. The...

Livestock and poultry farms in china were preliminarily divided into different scales. The popular pollution treatment projects were investigated. With the combined methods of Analytic Hierarchy Process and Grey Relational Analysis, pollution control technologies were evaluated to fit for livestock and...

The small near the surface of the landscape water body because of the influence of water quality deterioration and gradually people's normal life, need to take certain measures of water conservation and water treatment was carried out on the water quality protection. Traditional method from the surface...

In the expansion of urban size, the joint between the new and old urban areas is an important guarantee for improving the construction of urbanization, and is the key to improve the quality of the city and the only way to the development of new urbanization in China. Based on planning and design and...

Folded plate structure is a dimensional one which is composed of a plurality of the strip plate. It is not only a bearing but also can support, material-saving and larger stiffness of thin-walled structure. It can be used as workshops, warehouses, stations, shops, schools, dwellings, pavilions, stadiums...

This article takes the Sandwich wall slab that be connected by reinforcing bar trusses as an example, research the method and steps of calculating the carrying capacity of precast concrete Sandwich wall slab by finite element. this provide a basis for how to use the Sandwich wall slab safely in engineering.

Since the complexity of the structure of rock itself and the current test conditions is relatively simple, combined with uneven quality of test personnel, rock mass mechanics parameters are necessarily inconsistent with the actual situation. Based on grey relation analysis of parameters sensitivity of...

In view of the problem that the occurrence rate of construction safety accidents is higher, questionnaires, on-site interviews and other research methods had been applied to analyze the present situation of construction safety production management in our country. Summary up the main factors that lead...

In order to understand how traffic information influences travel route choice. State Preference survey is carried out to investigate travelers' behavior data. Mixed logit models are established to analyze the factors influencing travel route choice, one for overall object model and the other for typical...

How to select scientific and reasonable mechanical parameters of rock mass is particularly important to evaluation of slope stability. Based on the collection of engineering geological data about a mine, and through detailed survey and analysis of the engineering geological conditions in the field, the...

The electrochemical response of new alloy corrosion-resistant steel Cr10Mo1 passivated under attack of carbonation (pH from 13.3 to 9.0), was evaluated by electrochemical techniques (linear polarization resistance, and electrochemical impedance spectroscopy). X-ray photoelectron spectroscopy (XPS) was...

Through the study of tests,the'Technical Specification For Detecting Strength Of Concrete By Ultrasonic-rebound Combined Method' CECS02: 2005 of applicability situation in Hengyang was analysed to establish the ultrasonic rebound strength curve of this region,which was based on the least square method...

In order to improve the research level of the intelligent traffic surveillance system, this paper presents a new hierarchical trajectory clustering algorithm in view of the features of trajectories in entrances and exits of freeway. The validity of trajectories is judged by means of the length of trajectories...

Splitting cracks were found in the three-directional pre-stressed aqueduct of a large scale diversion project in north China. Based on internal structural characteristics of the vertical wall of aqueduct, the Impact Imaging Method (IIM) was adopted for the detections of cracks distribution, seriousness...

Through the course of the economic cycle and the development of urban real estate industry analysis process, economic development, in-depth study of the real estate cycle fluctuations and macroeconomic volatility relationship, trying to figure out the development of the real estate cycle and links between...

Method of network plan in project construction has been widely used, it complies with the requirements of the engineering construction management, organization and management is especially suitable for the construction of the project. At present our country network plan technology in engineering project...

With the development of marine transport, ship timely maintenance and repair of performance as one of the main factors affecting the efficiency of transport. Ship lift platform of steel structure provides appropriate maintenance and docking capability for marine areas, while steel platform has many advantages:...

Numerical manifold method (NMM) is very suitable for modeling the transition from continuum to discontinuum by virtue of its advanced finite cover technique. Compared with the 0-order NMM, higher-order displacement functions are more suitable for modelling the crack problems as the result that the latter...

The phosphorous slag-based cementitious material (PSBCM) with rapid hardening and high early strength was obtained by incorporation of graphite tailing powder, Portland cement, silica fume and mineral material A. The microstructure of hardened paste was investigated by Scanning Electron Microscope. Based...

The strength and ductility of concrete will dominate structural performance under expected rare earthquake, and concrete filled steel tube is an effective solution for this goal in super high-riseÿbuildings. As reliable numerical simulation of these kinds of structures may depend on reasonable constitutive...

Constraints are used widely for linear structural analysis in professional software, but some ofthem may be neglected in nonlinear analysis while using general FEA software. Two kinds of constraints, include panel zone at beam end and top alignment of beam and slab, are analyzed by numerical method....

This article studies the problem of vehicle emergency evacuation in urban large-scale activities. Genetic algorithm and ant colony genetic algorithm are applied to the vehicle emergency evacuation separately. Finally, we choose the Shenyang Olympic Sports Center as an example, and the simulation results...

The analytic characteristics of invariant manifolds for quasi-homogeneous autonomous system are obtained Yu [1]. On the basis of this,this paper give the unify thoughts of several classical special solutions can be achieved by using the proposal method in the conventional heavy rigid system. In addition,...

An algorithm especially for analyzing complex slabs of buildings in finite element method is proposed in this paper, which can improve the stress precision and obtain accurate and reliable analysis results. First, a general thin-thick plate element with the quadrilateral area coordinate is employed,...

Combined with design and test data of a low head sluice, CFD software and RNGturbulence model were used to simulate three-dimensional flow of sluices stilling basin. The original design has been optimized by adjusting the layout of the stilling basin. In connection with typical operating conditions,...

The object of this paper analyzes the reliability level of pre-stressed concrete continuous girder bridges designed with the Chinese codes including the code for design of highway reinforced concrete and pre-stressed concrete bridges and culverts of AASHTO LRFD-2012 and JTG D60-2015 using cantilever...

Firstly, the metro passenger satisfaction evaluation index system was established based on the real process of a single passenger, such as arriving, security checking, buying tickets and transiting. Secondly, the passenger travel satisfaction evaluation questionnaire was designed to conduct investigations...

The overflowing property of the restricted orifice how to affect volute pressure and the surge level under the condition of large fluctuation and the output swing of the unit under the condition of the hydraulic disturbance were studied. Combining with the engineering features of three adits sharing...

IDA need elastic and plastic analysis of the structure with a large number of different intensity ground motion inputs and had some disadvantages such as high cost of computation, retraction and non-monotonicity of its curve. An improved method of static elastic-plastic analysis with the consideration...

The major seed storage protein 11S globulin from Juglans mandshurica Maxim. (JSG) was isolated and purified to identify its structure and analyze its physicochemical properties. JSG was found to be composed of two distinct major polypeptides with molecular masses of 23 and 20 kDa, and whose amino acid...

This article researches the measures of thick silt foundation reinforcement and slope stability through the anti-sliding stability analysis. It can be concluded that the reinforcement effects of vibro-replacement stone column is remarkable on thick silt foundation based on reasonable pile spacing and...

Digital campus is an important part of the University's information.More and more students have mobile phones, so mobile phones have become an important part of the students.Mobile applications to help people to do some things and make lives become more convenient.In this paper, we design a new comprehensive...

Five indexes have been selected to figure characteristics of subgrade: damage condition, structural characteristics, such as height, slope ratio, etc., aftershock strength, features of terrain and physiognomy, rainfall intensity. Fuzzy AHP Comprehensive Evaluation Method, FACEM, has been introduced to...

Based on the data from field experiments, the phosphorus content and phosphorus accumulation of rice plants were analyzed, and phosphorus distributions in different parts of rice were studied as well. The results showed that compared with farmers' fertilization practice (FFP), site-specific nutrient...

With the rapid development of ultra-high voltage power grid, plenty of transmission towers are built on soft soil area and the foundation of tower should be designed for economical and security reasons. The mechanism and application of the new micropiles foundation are discussed, which have many advantages...

Panel zone strength in welded moment-resisting-frame connections have a significant effect on the stress and strain distribution in the connection and consequently on connection performance. It is generally believed that panel zone yielding is a yield mechanism that contributes to ductility of moment...

The finite element model of a prestressed concrete box-girder bridge was established,then the numerical simulation were carried out under the conditions of vertical temperature gradient. The effect of vertical temperature gradient is the important reason for the concrete cracks of box girder, and the...

Stress IntensIty factor can reflects the stabIlIty of cracks. It Is Important to study accurate calculatIon method of stress IntensIty factor. In thIs study, the fInIte element method wIth modelIng usIng ordInary element and sIngular element Is applIed to calculate stress IntensIty factor. It Is shown...

At present, China's nuclear power projects are mainly concentrated on the coast. The nationwide built nuclear power projects are mainly located in the three coastal provinces including Guangdong, Zhejiang and Jiangsu. The nuclear power projects under construction are also centered in the coastal 7 provinces...

In this paper, expansive soil is mixed with CKD in different proportions, and fast shear tests were conducted on the specimens with an certain initial water content and dry density; Furthermore, fast shear tests were also conducted for specimens with 10% CKD content ratio, when specimens were maintained...

Planning and management of POPS by New York City government has experienced a process from being extensive and loose to meticulous and strict, which possesses 60 years of experience hitherto. This paper reviews the historical evolution of POPS in New York City, and analyzes the impact of Zoning system...