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The cathode material LiFePO4/C composites were synthesized by solid-phase method using cheap and extensive FePO4 as iron ingredients and glucose as carbon source. The synthesis conditions were studied by changing the calcined temperatures and the ratio of lithium. The results show that the LiFePO4/C composite synthesized at 600 °C for 10 h exhibits the most homogeneous particle size distribution and excellent electrochemical properties. And it exhibits a specific discharge capacity of 127 mA h/g at 1 C.

Safety is the key-feature of high energy density lithium-ion batteries and thermal stability of the electrolytes is crucial. In this work, the thermal and flammability properties of mixed electrolytes based on the conventional ethylene carbonate (EC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC) (1:1:1 v/v/v), 1M LiPF6 and the hydrophobic ionic liquid (IL) N-methyl-N-propylpiperidinium bis (trifluoromethanesulfonyl) imide (Pp13TFSI) have been investigated. The mixed electrolyte is observed to be nonflammable at the Pp13TFSI contents of more than 40 vol.%. And physical and electrochemical characteristics of high energy density lithium ion batteries based on Li [Li0.2Mn0.54Ni0.13Co0.13]O2 as the cathode and artificial graphite as the anode with mixed electrolyte are also investigated. The cell of graphite/ Li [Li0.2Mn0.54Ni0.13Co0.13]O2 with 1 mol/L LiPF6/40%Pp13TFSI + 60% (EC+DMC+EMC) (1/1/1,v/v/v) electrolyte shows first charge capacity of 313.8 mAh g-1 and discharge capacity of 201.8 mAh g-1, respectively. Moreover, the nail penetration tests are carried out on the charged lithium-ion cells after formation, and the results show no explosion, ignition, or thermal runaway. These results suggest that the IL has potential to improve the safety of lithium ion batteries and can be used to fabricate the high energy density lithium ion batteries for electric vehicles and hybrid electric vehicles.

As the basis for comprehensive integration of the aircraft, AFDX network has been widely used in avionics network. AFDX’s reliability analysis and verification is particularly important according to the requirements of airworthiness. The transmission process, components and functional contact between components of AFDX network is analyzed in this paper. Dynamic fault tree (DFT) is used to model AFDX network reliability according to network fault characteristics. This analysis process has two contributions for network reliability analysis. Firstly, the analysis of AFDX network failures is implemented to device-level, which is facilitated to quantitative calculations in engineering. Secondly, end system and switch system, the core subsystem in transmission of AFDX, are analyzed and modeled, besides fault of redundant network.

By aerobic composting bin type of sewage treatment plant sludge composting, through periodic sampling, research composting process temperature, moisture content, PH value changes and study the changes in compost maturity parameters of the DH. The results show that the compost temperature increased rapidly in the early rise in the first two days when fast to 50 degrees Celsius, in the tenth day decreased to room temperature; moisture content than the original sludge reduced by 40 percent to compost indicators; PH by reaction initial 6.2, and gradually becomes neutral and alkaline 7.8 biased. Experiments show that after aerobic sludge composting in temperature, moisture content, PH value terms have been reached sludge disposal requirements.

Emissions of air pollutants from coal-fired power plants pose a threat to healthy living environment. Developing renewable energy and changing electricity generation structure dominated by coal-fired power has become a vital national strategy. In this paper, taking a rapidly urbanizing coastal area in southern Laizhou Bay of China as the study area, a scenario planning concerning substitution of wind power for coal-fired power in enterprise-owned power plants was conducted. Coupled with the electricity generation prediction by a grey prediction model GM (1, 1) and the calculation of pollutant emission intensity, we obtained three scenario schemes: no substitution (Scenario 1), low substitution (Scenario 2) and high substitution (Scenario 3). The results showed that Scenario 1 is not acceptable; Scenario2 is acceptable, but not ideal; Scenario 3 is optimal. The electricity generation structure under Scenario 3 has been radically converted from the type dominated by fossil fuel to one dominated by renewable energy, becoming an environment-friendly power generation framework with fairly low pollutant emission densities. This study can contribute to local managers to seek more concrete measures in mitigating the conflict between electricity demand and environmental health.

Mercury as a world wide pollutant gets much attention.The hazard of mercury differ from its forms.This paper review the transformation of mercury,especially in soil, and the remediation technologies of Mercury Contaminated Soil.

With the development of China’s industrialization process, heavy metal pollution is more and more serious. Cu is one of the widely distributed heavy metals. It has a cumulative effect and can cause cancer which is a huge potential threat to human life safety. So this paper expounds the hazard, sources, environmental behavior, control methods and problems existing in the methods of Cu.

HyperMesh was used to mesh the absorber spring plate, and MATLAB was used to read-in grid node coordinate file and to carry on multi-target structure topological optimization design through the self-compiled program. Objective functions include rigidity, volume and fatigue life etc. model reconstitution, CAE analysis and experimental verification were completed according to the optimization result. Results showed that optimized spring plate met the using need and lightweight design was accomplished.

In the recent years, antibiotics and heavy metals have become common pollutants in soil. Plant-microbial remediation is promising for the management of antibiotics and heavy metals pollution in soil. This paper talks about the mechanization of plant-microbial remediation, finds the advantages and disadvantages about plant-microbial technology, summarizes the method of selection of the plant and microbial, influential factors, and discusses the future research priorities of plant-microbial remediation.

The technology of multimedia aided teaching has been widely used in the professional teaching in higher schools. Starting from the characteristics of the subject of environmental engineering microbiology, discusses the role of multimedia teaching in the experiment teaching of environmental engineering microbe and superiority, discusses how to give full play to advantages of multi-media technology in the teaching practice, the rational use of multimedia technology, to improve the teaching quality and efficiency.

the paper deals with the present research situation of the construction of virtual experiment platform, construct the model with 3DMax software, for the construction of experimental platform by the technique of virtual reality software VRP, compiled into executable file (exe). The gram stains method for example, modeling and simulation. Display the application effect of the virtual experimental platform, the virtual experiment platform has the advantages of high utilization rate, easy expansion of functions.

As a rising phytoremediation technology, artificial floating island technology is increasingly used in wastewater purification. In this paper, studies on artificial floating islands at home and abroad were overviewed, including the variety of floating island, construction method of artificial floating island and the water improvement principle of artificial floating island. Artificial floating island technology is a kind of new ecological environment technology with many functions, such as pollutant purification, habitat restoration, ecosystem restoration, and landscape improvement. It has good application prospects in the area of comprehensive water body control.

With the increase of antibiotics usage, concerns on antibiotics contamination have been raised because of their serious environmental impacts in recent years. Antibiotics have become the emerging contaminants of soil. This paper reviews the pollution situation, the potential harm and the way of biodegradation of antibiotics in order to provide the reference to eliminate antibiotics pollution.

A section of Liaohe River in east of Shuangan bridge, Yingzhou District, Tieling City was selected as the experimental site to study ecological slope protection technique of riverbank in an agricultural catchment. Four ecological slope protection techniques, including combined biostabilization, Live stakes, Vegetation planting and Live stakes+vegetation planting were conducted. Results showed that through six and sixteen months growing, the highest shoot length and root length were observed in live stakes technology, while the lowest shoot length and root length were appeared in Vegetation planting technology. It indicated that Salix suchowensis is more suitable for the Liaohe river initially.

When the reactor is added with ectoine of concentrations of 0, 0.1, 1 and 10 mmol/L, the impacts on brine waste treatment efficiency are investigated. The results show that the outflow COD and ammonia nitrogen removal rates are the highest, when the ectoine concentration is 0.1 mmol/L. The brine waste treatment efficiency under addition of ectoine of 1 and 10 mmol/L is even worse than that without ectoine addition. It can be preliminarily determined that the best ectoine dosage is in between 0.1-1.0 mmol/L. When ectoine concentrations added in reactors are 0.2, 0.5, 0.8 and 1.0 mmol/L, the results show that the average reactor outflow COD and ammonia nitrogen removal rates are increased compared with those of reactor without adding ectoine. But when ectoine of 1.0 mmol/L is added, the outflow COD and ammonia nitrogen removal rates decrease. When ectoine dosage is 0.5 mmol/L, the reactor outflow COD and ammonia nitrogen values are the lowest, the removal rates are the highest, the average COD removal rate is 74.46%, and the average ammonium nitrogen removal rate is 54.97%. Compared with reactor without adding ectoine, COD and ammonium nitrogen removal rates are increased by 13.16% and 26.81%. Therefore, the best dosage of ectoine is 0.5 mmol/L.

Non-isothermal resistance heating in the hot stamping of quenchable steel sheets was developed to produce ultra-high strength steel formed parts with tailored properties. The heating temperature of parts is related with width of samples heated by resistance heating. With the same input energy, the strength in the narrow portions is high owing to the high energy density and that in the wide portions is low owing to the low energy density. Hat-shaped products having a tensile strength arrange from 600 MPA to 1800 MPa were formed. The tempering treatment on the directly hot-stamped boron steel resulted in better mechanical properties and higher formability index. The SEM figures indicates that the nano-carbide formation during the tempering treatment were suggested as the evident reasons for the occurrence of the mentioned robust properties. Finally the combination of temperature 250 ℃ and holding time 45 min can achieve the best comprehensive mechanical properties.

The inoculated sludge in this experimental system is from the end of aeration tank of the wastewater treatment plant. Under stable operation, the system’s treatments of COD and NH4+-N are all in line with Level One Urban Sewage Discharge stipulated by Pollutant Discharge Standards for Urban Sewage Treatment Plants (GB 18918-2002). The removal rates of COD and NH4+-N are 94.27% and 91.03%. By gradually improving the method of salinity acclimation, the salt tolerant sludge with outstanding performance can be successfully acclimated, and each gradual increase in salinity scope is controlled at around 4 g/L. When the salinity is 1%, the removal rates of COD and NH4+-N reach to 92.09% and 70.13%. The salinity has significant impacts on microbial activity. With the increase in salinity, the dehydrogenase activity gradually decreases. Salinity has significant effects on protozoa. Paramecia and nematodes can be taken as the biological indicator of outflow water quality of brine waste.

After great growth of traditional industrialization and economic,resource depletion and environmental problem have been the development bottlenecks of China. Recycling economic is a new model of economic development as a form of human ecological civilization which has great practical significance to economic growth. This paper analyzes the present situation and main problems of China’s circular economy and proposes recommendations of pushing forward it.

In this experiment, water hyacinth presents a good purification effect in five kinds of eutrophic waters with initial total nitrogen (TN) and total phosphorus (TP) concentrations in between 8.34~20.45 mg/L and 0.78~1.51 mg/L. After two weeks of purification, TN and TP concentrations of eutrophic waters are reduced to 1.78~5.68 mg/L and 0.25~0.312 mg/L, and TN and TP removal rates are 72.22~78.65% and 67.95~79.34%. Water hyacinth’s TN removal rate decreases as TN initial concentration increases; TP removal rate increases as TP initial concentration increases. Water hyacinth’s average total biomass in eutrophic water has increased by 0.944~1.084 kg/m2, and the average bio-dry-weight has increased by 0.0470~0.0547 kg/m2. The average total biomass and average bio-dry-weight of water hyacinth increase as the eutrophication deepens.

The Ag-assisted electroless etching of p-type silicon substrate in HF/H2O2solution at room temperature was investigated. In this work, the effects of HF, H2O2and their volume ratio on morphology and growth of p-type silicon substrate surface by using metal assisted etching were investigated in order to produce a highly efficient antireflecting structure. The Ag metal particles were deposited onto Si wafer by electroless deposition from a metal salt solution including HF. The experimental results show that the growth rate and morphology of the pores formed on the Ag metalized Si surfaces are strongly dependent on the volume ratio of HF and H2O2.

Coal transportation network is mainly integrated transport network of rail, road and waterway transport modes composed. Transport routes play a crucial role for transport networks normal operation. This paper combine with the definition of coal transportation network invulnerability based on edge failure and attack strategy, proposing invulnerability assessment method, combining with China's coal transportation network to analyze network invulnerability in case of side failure.

Built-up columns are widely used in engineering structure, but it is confusing for designers how to determine the parameters of built-up columns. The paper based on the user's basic needs which are the minimum working radius and working load, would simplify working load, support force and hoisting force to the vertex of built-up columns. From the origin of design, and to analyze mechanic behavior of built-up columns, and have found the relationship between internal forces, that is, the axial force, the swing force, the support force, and the working load. In accordance with design experience, the relationship between axial internal stress and its total working stress, critical stress and limit of yielding, had been respectively determined. According to this knowledge to determine the mass and the geometrical parameters of major cross-sections and roots of built-up columns, and a comparison between the results and ones of examples calculations were made, and it was found that the results are reasonable. This will offer a design method of determining the major parameters of built-up columns at the phase of the preliminary design, and improve the independent design capability.

Constructing virtual training system based on Virtools technology is useful for enhancing the efficiency and effect of training. In this paper, we analyze the intension of virtual training system, expatiate the meaning of virtual training system in oil jobs training, generalize the technical characters and advantages of Virtools, and take the example of installing BOP to introduce the design of virtual training system.

The steel slag was used as adsorbent for the adsorption of Phosphate. the isothermal adsorption test studies adsorption of the steel slag on phosphorus and ammonia nitrogen. The results showed that that the steel slag have very strong adsorption capacity on phosphorus. Langmuir adsorption equation can better describe adsorption of steel slag on phosphorus, the max adsorption quantity of steel slag on phosphorus is 9495.916 mg·kg-1, adsorption intensity is 0.0132.

Based on the galloping mechanism of transmission line, it is determined to use viscoelastic damping material and energy effects of TMD to suppress galloping. The dynamic mechanical properties of viscoelastic damping material is studied, with the operating environment of the transmission lines, high-and-low-temperature physics experiment is carried out, while the experimental study on mechanical properties is carried out with the developed viscoelastic damping elements. It is showed that the viscoelastic material meets the anti-galloping device performance requirements for materials, it has a good energy consumption effect, suitable for application to anti-galloping of transmission lines.

This paper mainly analyzes development situation of the Internet of Tings and RFID Radio Frequency Technology and Cloud Computing,the two core technologies.The design builds a three layer underground parking lot apply Internet of things.Scheme is expounded the equipment and technology required to form a iot,The wireless light sensor,Single Chip Microcomputer,LED Signal Light,LCD touch screen,an so on.cloud computing total management control is used to achieving intelligent parking lot, intelligent left, intelligent door control, etc.

Austenitic continuous heating transformation dynamics, microstructural evolution and quenching properties of 22MnB5 steel during resistance heating were investigated. Steel sheets with thickness of 1.6 mm were heated to various temperatures (800~1200 °C) either by resistance heating at two heating rates of 100 and 300 °C/s or furnace heating. The increment of superheat degree was parabolic relationship with increasing heating rate. Samples heated above Ac3 of respective heating rates exhibited a full martensite microstructure and a hardness of above 490 HV. Austenitic coarsening rate of resistance heating samples was much lower than those by furnace heating. Austenite grain size by resistance heating was smaller than 38 μm while these by furnace heating reached 74 μm at 1200 °C. Samples heated by resistance heating at 300 °C/s had a good performance of 1800 MPa tensile strength and 5.6 % elongation, and product of strength and elongation reaches 10080 MPa%. The good combination of tensile strength and elongation by resistance heating might result from the finer austenite grain size and smaller martensite plate.

Dam is the most important building in water conservancy, which generates enormously social and economic benefits in the national economy by providing green energy to all walks of the national daily life, and playing a important role in flood control for the safety of peoples lives and properties. However, as dam outburst will bring disastrous consequences to the downstream place, it is very important to ensure the safety of dam. By the large general software ANSYS for static analysis and the response spectrum analysis method for the dynamic analysis, this paper gives the security evaluation of a RCC gravity dam project, and provides some reference for similar engineering analysis.

In this paper, the finite element analysis software ANSYS is used for modal analysis and dynamic analysis of a cold-formed steel villa to calculate its natural frequency, vibration period and dynamic time history curves. The analysis provides a basis for cold-formed steel villas design and has a certain reference value for similar projects.

The aim of this study was to observe the antioxidant effect of hydrolysates derived from bighead carp protein (HBCP). The effect was observed through the life span experiment of D. melanogaster and was evaluated by antioxidant indexes of D-galactose (D-gal) induced senile mice. The mean and maximum life span of D. melanogaster with HBCP supplement in nutritional medium was compared to that of control group, which were fed without any addition. The senile mice were induced by celiac injection of D-gal for six week. Experiment groups received HBCP at different dosages (3 g/kg, 1.5 g/kg and 0.5 g/kg) by intragastric administration, while the aged group received saline every day. Contents of malonadehide (MDA), activities of superoxide dimutase (SOD) and glutathione peroxidase (GSH-Px) were determined. The results showed that the addition of HBCP in feedstuff could increase the mean and maximum life span of D. melanogaster. Compared to the D-gal induced senile group, contents of liver and brain MDA in mice which received HBCP (3 g/kg and 1.5 g/kg) by intragastric administration were significantly decreased (pD. melanogaster.

Nowadays, Environment Evaluation stands a hot spot in research, and a lot of scholars pay attention to this. In the paper, we have summarized to approaching degree by collecting literatures at home and abroad about environment evaluation. First of all, the paper introduces the definition, principle, formulas, procedures, characteristics of this method; secondly, we recommend examples about this method of the present stage in the domestic present situation of the application in different industries; finally, we put forward this methods evaluation and prospect for the future.

This paper presents a new sophisticated platform for solving the topology optimization problems of various fields including structural, heat, other alternative physics and even coupled multiphysics. Although several up-to-date commercial packages have been launched for solving topology optimization, all of them are limited to solving structural problems with specific constraints and objectives, such as volume, compliance, stress, eigen-frequencies and limited a few kinds of manufacturing constraints. This paper pays much attention to extend the power of the commercial software to solve the multiphysics and multidisciplinary problems. For comparisons, the classical structural designs with different constraints are also discussed in this paper. Numerical examples both in 2D and 3D are provided to illustrate the new software.

The research of Ecosystem Evaluation Method is the hot spot in the field of environment protection, and the method has a significant analytical meaning to determine ecological environmental health and environment protection. In this paper, we introduce some stuff as follow. Firstly, the concept of ecological system in domestic and foreign related research is summarized. Secondly, on the basis of the ecosystem evaluation thoughts, evaluation methods can be divided into four types, multiple indicators method, the prediction model method, biological evaluation, and comprehensive index evaluation method. Finally, combining with the trend of the development of ecological system, analyses the disadvantages of the present study, puts forward the ecosystem evaluation research focus and developing direction in the future.

The long-span suspension clamp is used to suspend conductor or ground wire on the long-span tangent tower [. Long-span suspension has impact on the operation safety and investment of long-span projects. This paper makes analysis and comparison of different models of suspension clamps and studies the long-span suspension clamp for transmission line over Han River in terms of model and material selection, design & calculation, manufacturing process and test, etc., in combination with features for crossing over Han River.

The objective of this research was to study the surface water quality and evolution of surface water environment in Liaohe River main stream. Results showed that the surface water quality was declining along main stream. It was better in flood reason than others. It was best in Defudian monitoring station and worst in Shuguangdaqiao monitoring station. This research would significantly improve the understanding of the evolution of surface water environment in Liaohe River main stream.Keywords: water quality assessment; Liaohe River; membership function

In this paper, two kinds of different pollution degree soils denoted as L1 and L2 were used as test soils. Desorption experiment was carried out to study the impacts of pH and electrolyte on desorption characteristics of cadmium (Cd) in soils. The results showed that the variation trends of Cd desorption rates with increase in pH were similar. In other words, it decreased as pH increased. In acidic region, desorption rate of heavy metal Cd decreased rapidly as pH increased. When pH = 4, Cd desorption rate was largest; in neutral and alkaline regions (pH = 7-10), desorption rate of heavy metal Cd decreased slowly as pH increases. Cd desorption behavior was closely related to type and concentration of electrolyte. Under the same concentration, Cd desorption capabilities of three electrolytes in soils L1 and L2 could be expressed in following order: CaCl2> Ca (NO3)2> NaCl.

In this study, oxytetracycline, chlortetracycline and roxithromycin examples, general family of farmers livestock and poultry breeding point scale livestock and poultry breeding plant in Shenyang, Tieling and Fushun representative soil samples and the application of livestock manure are sampled and analyzed, in order to understand the situation of the antibiotic residues in manure in these regions and application of antibiotic residues in soil containing antibiotics in livestock and poultry manure.

Rolling force is critical to realize the industrialized production of the rolled mg alloy sheets especially more than 1500 mm width which affects the mill set-up schedule, the thickness of the rolled metal, and the final product profile. An online calculation model of rolling force with high precision and high speed has also been developed with the finite difference method (FDM) in this paper which can provides a good guidance for the enhancement of product precision and the development of new products.

The anodic aluminum oxide (AAO) templates on polycrystalline silicon substrate are studied for growth of ordered nano-dot arrays in order to fabricate the porous silicon layers. The AAO templates on polycrystalline silicon substrate with pores of average diameter 50nm were successfully prepared by one-step anodization of high pure aluminum layer deposited on polycrystalline silicon in oxalic acid solution. Scanning electron microscopy (SEM) showed that alumina nano-pore arrays were nicely constructed with smooth wall morphologies and well-defined diameters.

In the present experiment, we took a section of Liaohe River in east of Shuangan bridge Yingzhou District, Tieling as an example to study ecological slope protection technique of riverbank in an agricultural catchment. In order to assess the potential of the slope protection project, the length of new taproot, height of new branches, and base diameter of shoot were determined. The results showed that the pioneer species such as Salix suchowensis and Amorpha fruticosa are growing very well with strong root system and flourished branches, which can help control soil erosion effectively. Furthermore, the growth indexes of Salix suchowensis were higher than those of Amorpha fruticosa after five months growing. Along with the riverbank being reinforced by soil bioengineering technique, native plants have been in rapid restoration and biodiversity increases.

In recent years, the environmental impact of antibiotic pollution from animal manure has gradually become the focus of attention. The compost is a common method for degradation of antibiotics, the rapid degradation of antibiotics can be achieved by adjusting the different compost conditions. Biosurfactants caused all the attention as a new class of surfactants, biosurfactants used in compost will have an impact on the degradation of antibiotics in livestock and poultry manure.

The raceway boundary described with contour field is coarse and fragmentized, but all of previous studies are based on Euclidean geometry. In this paper, particle velocity contour has been developed to define the raceway boundary. Then the fractal method of calculating raceway size, which describe boundary with extremely un-regular or fragment characteristic, is brought forward in physical model. The results show that the precise raceway boundary can be obtained by particle velocity contour.

In this paper, a numerical simulation model based on discrete element method (DEM) has been developed to analyze the burden distribution in the Melter gasifier of COREX process. The burden trajectory, the location and the burden surface profile are analyzed in the top charging of melter gasifier. The distribution of ore and coke and the porosity in the radial direction are given under the different charging mode. The results can be used to optimize the charging patterns in order to obtain the reasonable gas distribution.

The bioavailability and environmental risk of heavy metals in soil depends greatly on their speciation, not total amounts. Different speciation analysis techniques of heavy metals in soil are reviewed and the speciation schemes are considered and discussed in some detail. The present problems remained in the field of environmental science and future trends of speciation analysis of heavy metals in soil are also briefly dealt with.

In this paper, the soil simulation pot experiment was carried out. The self-made cadmium (Cd) and lead (Pb) compound contaminated soil was taken as the test soil, and wheat was taken as the test plant. The Cd and Pb concentrations in different parts of wheat under jointing stage, booting stage, flowering stage, and mature period were measured, and enrichment characteristics of wheat to Cd and Pb under different growth stages were analyzed. The results showed that Cd and Pb contents in wheat roots were the greatest, while the contents in nutritive organ seeds were the least. Sequence of Cd and Pb contents in various parts of wheat was: roots> stems & leaves> rice husks> seeds. Cd and Pb contents in various parts of wheat plant gradually grew in the entire growth period, which reached the maximum at mature stage. According to the transfer coefficient and enrichment factor analysis, ability of wheat roots to enrich heavy metals Cd and Pb was stronger than that of stems & leaves, rice husks and seeds. In the transfer process of heavy metals Cd and Pb from soil to root, the transfer ability sequence was Cd > Pb.

In this paper, the soil simulation pot experiment was carried out to study the impacts of trace elements iron (Fe) and zinc (Zn) on availability of cadmium (Cd) and lead (Pb). The self-made Cd and Pb compound contaminated soil was taken as the test soil, and wheat was taken as the test plant. The results show that with the increase in Fe dosage, overground dry weight, root dry weight, and total dry weight of wheat gradually increase; the application of Zn reduces overground dry weight, root dry weight, and total dry weight of wheat. Meanwhile, wheat biomass under Cd and Pb combined pollution is smaller than that under single Cd pollution or single Pb pollution. The application of Fe fertilizer increases Cd absorption of various parts of wheat. In the single Cd pollution treatment, with the increase in Fe dosage, Cd concentrations in roots, stems and leaves of wheat will first be increased, then decreased; in Cd and Pb combined pollution treatment, with the increase in Fe, Cd concentrations in roots, stems and leaves of wheat will also be increased. The application of Fe promotes the Pb absorption of wheat. With the increase in Fe dosage, Pb concentrations in roots, stems and leaves of wheat will first be increased, then decreased slightly. Compared with Zn0, Cd concentrations of different parts of wheat after Zn1 and Zn2 treatment increase significantly. In addition, with the increase in Zn dosage, Cd concentrations of different parts of wheat will first increase, then decrease. Regardless of single Pb pollution treatment or Cd and Pb combined pollution treatment, Pb concentrations of different parts of wheat decrease as Zn dosage increases. Under different Fe and Zn levels, and when Cd and Pb coexist, Pb can promote Cd absorption of plant, but Cd inhibits Pb absorption of plant.

During excavation of deep foundation pits, the effects of vertical deformation on column piles are often neglected while those uplifts may lead to destruction of internal supports. The factors leading to the column piles' vertical deformation mainly include basal uplift and vertical loads. In this paper, the causation and mechanism of the column piles' uplift are discussed. The influence of the additional bending moment due to the column piles' vertical deformation on the overall stability of the founda-tion pit is analyzed. A calculation method of the permissible value of vertical deformation is present¬ed. The method is verified by a practical case to be feasible.

This study chooses the industrial wasteland after the relocation of a metal processing factory in Shenyang, Liaoning Province of China as the research object. Based on level three soil heavy metal quality standards of Soil Environment Quality Standard (GB15618-1995) in China, the pollution levels of four heavy metals (cadmium, lead, copper and zinc) in survey area are Cd> Cu> Zn> Pb; the Cd pollution is the most serious one, followed by Cu and Zn. The Pb content is low. Average comprehensive pollution index of Cd, Cu, Zn and Pb in soil of the wasteland is 17.33, which belong to Grade V severe pollution. The most polluted point is J-12, followed by J-11 and J-16. The land utilization risk assessment of the wasteland should be strengthened, and appropriate and necessary repair measures should be taken, such as planting accumulative or tolerant plants.

This essay is aimed at stressing the importance of the cultural value importance of the outdoor environment of university campus, and reflecting the common understanding of the university students on the value of the outdoor environment of university campus. University campus environment characteristics of culture determine the overall cohesion of the campus and students on the campus of the identity and ownership. Therefore, today's campus planning and design should enhance the campus culture of outdoor space environment, in order to cultivate, education, teachers and students.

In order to investigate the effects of four heavy metal tolerant microorganisms, Staphylococcus pasteuri (X1), Agrobacterium tumefaciens (X2), Penicillium chrysogenum (Z1) and Paecilomyces lavender (Z2), on heavy metals uptake by the heavy metal tolerance plant-maize and the cadmium hyperaccumulator plant-Beta vulgaris var. cicla L., a pot experiment with sediments was conducted. Through comparing the overall situations of four microorganisms’ role in enhancing maize and Beta vulgaris var. cicla L. to gather cadmium, lead, copper and zinc, plant biomasses, and enrichment characteristics, the combination of bacterium X2, fungus Z2 and these two plants can effectively repair these four heavy metals in sediments.