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The adsorption isothermal curve and thermodynamic adsorption of Cd2+ and Pb2+ on modified walnut shell from waster water were investigated using batch technique. The equilibrium adsorption data are fitted to Langmuir and Freundlich isotherm models and the model parameters are evaluated. The Langmuir isotherm model shows a better fit to adsorption data than the Freundlich isotherm model for the sorption of Cd2+ and Pb2+ on modified walnut shell. The maximum adsorption capacity of Cd2+ and Pb2+ by modified walnut shell is found to be 32.68 mg·g-1 and 84.75 mg·g-1 at 298K temperature, respectively. The adsorption processes of Cd2+ and Pb2+ has feasibility and spontaneous nature. Thermodynamic parameters depict the endothermic nature of sorption and the process is spontaneous and favorable.

With the rapid development of modern logistics technology and automation of information technology, the AS/RS has been more and more widely used in the field of medicine logistics. In order to more effectively manage AS/RS, improve the rationality of the layout, reduce the number of goods handling and storage costs, it demands to optimize the cargo space allocation for goods .This article adopts multi-objective genetic algorithm to solve the optimization problem of cargo space allocation modeling, and use Jointown pharmaceutical logistics center as an example to further verify the analysis, getting the ideal optimization results and the simulation image.

Implement a checkpoint mechanism in the system of loaded BLCR project, to set up checkpoints on the progress which need a quick recovery. The router can receive and save the checkpoint files sent by the other system. When the process need to quickly migrate to the other machines, to use the checkpoint files to recover, ensure the process runs on the other computer from a previous running state. In this way can save a lot of time and resources, and can meet the need of many applications.

A single-stage PFC converter was introduced in this paper, then the converter EMI filters, converters inductors, high-frequency transformers and power components were designed and chosen, proven to good effect.

The paper is concerned with 1-MCP effect on post-harvest Pleurotus eryngii weight loss rate, polyphenol oxidase (PPO) activity and fruit body microstructure at different storage stage.The results showed that compared with control group, the weight loss rate and PPO activity were decreased by 5.94% and 37.38% ,and its microstructure had least change after 14d when treated with 0.3µL/L 1-MCP.The weight loss rate and PPO activity also decreased by 5.42% and 33.98% respectively with least change in fruit body microstructure after 14d when treated with 1-MCP for 24h. It proved that the optimal 1-MCP processing concentration is 0.3µL/L and the most appropriate processing time is 24h. These processing conditions slowed down the weight loss rate and browning level ,also reduced the change of fruit bodies microstructure and extended storage period

At present, the pharmaceutical logistics industry in our country is still not perfect, and the pharmaceutical logistics enterprises have not occupied the home of advantage in China. Establishing pharmaceutical logistics distribution center can make well coordination with production, transportation and other aspects, so that the upstream and downstream enterprises can complete the delivery mission, shorten the logistics time, reduce logistics cost better. The actual data of import goods in this paper to Zhongyou of pharmaceutical logistics company in Gansu at present as the basis, use the association graph method to design the best layout of distribution center, draw the final layout, make reasonable arrangements for each functional area location, shorten the walking path, improve the distribution center operation efficiency, so as to provide quality service delivery for each customer, in order to meet the needs of daily doses of whole northwest area.

In this paper, a stacked denoising auto-encoder architecture method with adaptive learning rate for action recognition based on skeleton features of human is presented. Firstly a Kinect is used for capturing the skeleton images and extracting skeleton features. Then an adaptive stacked denoising auto-encoder with three hidden layers is constructed for unsupervised pre-training. So the trained weights are achieved. Finally, a neural network is constructed for action recognition, in which the trained weights are used as the initial value, covering the random value. Based on the experimental results from the Kinect dataset of human actions sampled in experiments, it is clear to see that our method possesses the better robustness and accuracy, compared with the classic classification methods.

Anti-extrusion process for the cylinder of spray-formed ultra-high strength aluminum alloy is researched in this paper. The spray-formed 7xxx aluminum alloy is treated by a two-step homogenization treatment (440 °C / 12h + 472 °C / 24h) after hot isostatic pressing (HIP), and then hot compression tests are carried out for getting the stress-strain relationship under different forming conditions. Anti-extrusion process for the cylinder is improved including changing the shape of mould and billet, and numerical simulation is used for researching the anti-extrusion process. According to the distribution of strain-effective, it can be seen that the improved scheme of anti-extrusion process can get more deformation than the common scheme at the bottom. The result of anti-extrusion experiments shows that the microstructure is evenly distributed across the cylinder under the improved scheme.

This paper based on the scattering principle of lubricating oil to light, designed the plan of making use of near-infrared light to monitor automobile lubricating oil, and hereby it to monitor the deteriorated condition of lubricating oil. Experiments show that: this kind of technology for monitoring automobile lubricating oil can satisfy the deterioration condition monitor demand of automobile lubricating oil, and give the instructions of the lubricating oil deterioration degree, so we can decide whether the lubricating oil can continue to use according to it. This method changed the traditional conditions that replace the lubricating oil according to time or the driving mileage, it realized replacing lubricating oil according to the quality, thus it makes the lubricating oil obtain the reasonable economy service life, and guaranteed the good lubrication condition of vehicles.

The Neutron Transport Theory is accurate in reactor engineering analysis, but the calculation process is tedious and complicated. The objective of the present study obtains the thermal utilization factor f by Monte Carlo method. The study establishes the pressurized water reactor model by MCNP program firstly, and calculates the dioxide pellets, zirconium alloy cladding and moderator’s neutron flux density distribution. The thermal neutron disadvantage factor ζ will be gained according to the definition formula. Based on the functional relationship between the above thermal neutron disadvantage factor ζ and the thermal utilization factor f, this study finally obtains the thermal utilization factor f.

Base on the theory that 222Rn can transport in any medium, fast prediction model of radon concentration in environment air can be acquired. And it has been proved accurate by an experiment in laboratory. Many field tests also showed that the average absolute relative error is 8.78% between mean value of measurement and that of fast prediction. It can be predict fleetly the radon concentration by 226Ra which is acquired from the airborne gamma-ray spectra. The relative error between measurement and model is-11.7%. Therefore, the transport model can be effectively applied to predict radon concentration in environment air.

In this paper, KTA-304 boron steel for low-energy neutron absorption and attenuation is studied by Monte Carlo method, and compared with the traditional SUS304 stainless steel. Taking into account some factors, such as processing conditions, corrosion resistance, hot ductility, etc. we may reasonably come to the conclusion that 1.13% boron concentration in the steel has a better absorption capacity to the low-energy neutron and can effectively reduce the secondary γ-ray effect, meeting the request of radiation protection with reduced material thickness. Besides, low-energy neutron attenuation coefficient was calculated at different boron concentrations of the steel in different energies, providing a reasonable basis for selecting the neutron shielding materials. The γ-rays released in the neutron capture process were considered, too.

Based on the fatigue test of 6 stainless steel reinforced concrete beams, number of stress cycles, dropping-coefficient of stiffness and crack width are studied. This paper mainly discussed, under different stress states and reinforcement ratio, the influence of the reinforced concrete beam with stainless steel rebar on crack development, deflection and fatigue life. It can be concluded that, the fatigue life of the stainless steel reinforced concrete beam will go up as the stress decreases. Based on the analysis of the test results, the S-N curve can be deduced.

Poyang Lake is under the potential threaten from water eutrophication. The implementation of pollution-purifying agricultural industrialization in the Poyang Lake area is an important strategy for controlling the non-point source pollution and achieving economic transformation in the area. In this article, the characteristics of pollution-purifying agriculture and the advantages for its industrialization in the Poyang Lake is discussed. The suitable patterns for the implementation of purifying-agricultural industrialization in Poyang Lake are also proposed.

In this study, a laser beam welds in a Al-Zn-Mg alloy were characterized by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM) and tensile tests. It is found that the joint of the alloy contained three distinctive regions, i.e. fusion zone, heat affected zone and base metal region. The fusion zone consists of small grains, whose size is heterogeneously distributed. Extensive microhardness measurements were conducted in the weld regions of the nuggets exhibited a hardness loss in the fusion zone due to the loss of strengthening phases. Microstructural examination of the joints revealed typical eutectic structure was appeared in the heat-affected zone due to relative low cooling rate. Tensile properties of the joints were obtained by testing flat transverse tensile specimens, and the results indicated that tensile strength of these welds approached 76.8~77.3% of the base metal.

The influence of surface polaritons on spectral energy flux at different temperatures or distances to the surface of a plate was analyzed. The relations of the net heat flux between two parallel plates with the material type were also discussed. The results demonstrate that the effect of surface polaritons is dominated in the spectral energy flux at 300 K when the distance is decreased to 100 nm. In addition, the intensity of surface polaritons increases with the temperature. The net heat flux between two parallel plates has a nearly linear relation with the temperature and is closely related to the material type. It reaches up to 2.792×107 W/m2 between two SiC plates, approximately 3~6 orders of magnitude larger than that between two different materials. However, the net heat flux between SiC and Al is merely 2329.7 W/m2, even smaller than the result calculated by the classical stefan-boltzman law between two blackbodies.

In this paper, the authors analyzed effects of the factors, such as the air mass flow rate, the geometric dimensioning of the inner and outer combustion tubes and the thickness of the radiator, to the performance of the combustion-end radiator system. The result shows that optimal performance will be achieved when the combustion power is 1kW and the air mass flow rate is 5 times higher than the requirement for the complete combustion of CH4. On this basis, the effect of the geometric dimensioning to the combustion-radiator system is discussed. The performance of the combustion-radiator system is the best when the inner diameter of inner tube is 24mm, the length of the combustion tube is 40mm and the radiator thickness is 1mm. In this condition, the average temperature of the radiant surface, the radiant power density of the radiator and the combustion efficiency are 1530K, 9.41W/cm2 and 47.3%, respectively.

Aiming at the disadvantage of existing equipment maintenance accessibility evaluation method, this paper studied the project of equipment maintenance accessibility evaluation. a method of equipment maintenance accessibility evaluation in the virtual environment is put forward based on Matrices Permanent and index correlation degree , at last an example is given. It is significant for developing maintainability verification and increasing Equipment Maintainability in the course of equipment digital mock-up designing.

Aiming at the disadvantage of existing equipment MTTR demonstration method, this paper studied the project of equipment maintainability demonstration Based on Virtual Simulation, and put forward a method of equipment MTTR demonstration in the virtual environment, at last power system of equipment is verified as an example. It is significant for developing maintainability demonstration and increasing Equipment maintainability in the course of equipment digital mock-up designing.

Traceability is a useful approach to reduce information asymmetry and control food safety risks in agri-food supply chain. However at the present stage where development of traceability system in China is not mature, food processors have to take high investment of traceability and benefits into consideration in economic aspect. The paper builds a game-theoretic model to analyze the economic value and feasibility of traceability in agri-food supply chain. It is found that there may be different situations in which the game equilibrium outcomes between two processors are different. However, if the government intervenes, it is shown that government can take action to guide the game equilibrium to the result that both the processors will implement traceability voluntarily.

The CuCr25 alloys were prepared by spray forming technology, and effect of process parameters on the deposit was studied. The microstructure of CuCr25 alloy prepared by spray forming was studied, and the size of chromium particles was 3-10μm. It is fond that spray-deposited CuCr25 alloys were hot forged and hot isostatically pressed to full densification,and the size of chromium particles was increased little after being hold at 1070°C for 60mins. Conclusions were drawn from the researching results that spray forming was an ideal method to prepare CuCr25 alloys with fine chromium precipitates and homogeneous dispersion. After hot forging and hot isostatic pressing, the size of chromium particles was increased to 10-15μm. the density of the CuCr25 alloy could be 99%.

Aiming to lack for the verification method of equipment maintainability quantitative requirements, this paper researched the verification method of average replacement time through virtual simulation technology, and proposed the mathematical model of average replacement time, which can lay the foundation for maintainability virtual verification.

Based on amount change and distribution density of the Neolithic sites in Henan Province, these sites are divided into three types: (1)the Growth type. This type is mainly located in Luoyang Basin where the landform was convenient for millet-farming and settlement-clustering. (2) the Atrophy type. It mainly sits in the Nanyang Basin in which was a transition zone for cultural exchange. And (3) is the Oscillation type. This type distributes around the area of Yinghe-Ruhe River downstream with low land and frequent floods, which affected the amounts of sites in respond to series climate fluctuations in the early and middle Holocene. Comparatively, the unique terrain environment and water networks in the Luoyang Basin heralded the earliest civilized fruit in China and to be the cradle of early cultural transmission.

Aiming at the disadvantage of existing materiel maintainability quantitative requirements demonstration method, this paper studied the project of the materiel maintainability qualitative requirement demonstration Based on virtual simulation, in order to determine the materiel maintainability qualitative requirement, the accessibility and visibility as an example to illustrate the virtual demonstration method. It is significant for developing maintainability demonstration and increasing materiel maintainability in the course of materiel digital mock-up designing.

A novel apparatus is introduced in this paper used to measure high voltage electric energy based on three-phase four-wire virtual-ground theory. The virtual-ground design, Faraday shielding technique and Warner DC (Direct Current) self-supply method are integrated in this apparatus based on new I/V, V/V techniques to realize high accuracy, reliability and wide-linear range measuring. The effectiveness of the apparatus has been proved by in-house calibration and on-site test . The test result shows that it can be used in high voltage grid on-site calibration . Its measurement uncertainty can be limited to 0.1% under the condition of PF=1.0~0.8, and can reach 0.15% as PF=0.5. In summary, the apparatus discussed in this paper can be applied as high voltage electric energy measurement instrument to meet the requirement of online metrological verification and calibration. Furthermore, it is very useful for building the system of Advanced Metering Infrastructure (AMI) in smart grid.

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.

In this study, Al-8.6Zn-2.6Mg-2.2Cu (wt,%) alloy was synthesized by the spray atomization and deposition technique. Electron beam welding (EBW) joint in the spray-deposited Al-8.6Zn-2.6Mg-2.2Cu alloy is composed of fusion zone, heat affected zone and base metal region. The microstructure of the fusion zone has been found to be very fine equiaxed grains, and the microstructure of the heat affected zone is mainly composed of α-Al and Al/MgZn2 eutectic microstructure. Extensive microhardness measurements were conducted in the weld regions of the nuggets exhibited a hardness loss in the fusion zone due to the loss of strengthening phases. Tensile properties test results indicated that tensile strength of these welds approached 82.3~85.3% of the base metal. The analysis of fracture surface has confirmed that the specimen fractured within the weld region during tensile test.

According to the requirements of hydraulic transmission to two-way cartridge valve, and from the practical point of view a water hydraulic two-way cartridge valve was designed. Then its structure characteristics was introduced and the mathematical model was established. The simulation analysis of the water hydraulic two-way cartridge valve has been carried out through Matlab/Simulink proving that its structure was reasonable and it had good performances.

Definition of raceway shape and size has always been a challenging task. The whole physical parameters field can be used to describe the raceway boundary precisely, but all of the physical parameter fields are obtained from numerical simulation so far and there isn’t a specific criterion to define the raceway boundary. In this study, a new digital image processing technology has been developed to define the raceway boundary in cold model of blast furnace. The particle velocity contour criterion of raceway boundary definition is 0.15 m/s in this study and the precise raceway boundary can be obtained through this method.

A hot model is established to study the cohesive zone of COREX melter gasifier in this paper., in this experiment, the paraffin and corn are used to simulate DRI, coke and lump coal respectively, the influences of ore/coke volume ratio, raceway gas temperature and raceway gas volume on the cohesive zone are analyzed using image processing method.

The spindle wheel forces load spectrums of certain car were collected on typical service roads and proving ground roads. Rain-flow matrixes of wheel forces in target service roads and proving ground roads were analyzed based on measured load spectrums with analysis software. Then different roads of proving ground were combined to simulate target service roads with load equivalent analysis method based on rain-flow matrixes. The damages were compared between target service roads and combined roads in proving ground. The results show that the combined roads in proving ground can reflect the true damage of the target service roads.

Due to the massive volume of body and complex structure, the dynamic reliability analysis on arch dam under earthquake action draws more attention. In this paper calculated seismic dynamic action on arch dam by applying mode superposition response spectrum method. By taking the elastic modulus of the dam concrete and the rock foundation beneath the dam, and concrete tensile and compressive strength as random variables, adapting response surface method to establish limit state equation. The reliability index of each element in the dam was calculated via gradient optimization method, as a result to obtain the variation law of reliability index of dam body. The calculation of real case shows that the tensile index is comparatively low at some region of dam heel and abutment upstream, which requires the measure for aseismic measures, while the reliability index for tensile and compressive stress on other part of dam generally meets requirement.

The experiments of ultrafiltration of Taihu Lake water with sand filter and water- dropping aeration biological contact oxidation combinations were evaluated. The experiment results showed that under the conditions of the average water temperature was 19.8°C and the HRT of the biological contact oxidation was 1.5h, the removal rates of turbidity, ammonia nitrogen, CODMn and algae by technological purification process were 99.1%, 85.2%, 53.6% and 98.7% respectively. As a comparison, the removal rates of turbidity, ammonia nitrogen, CODMn, algae, UV254 by routine purification process respectively were 96.6%, 16.3%, 35.8% and 95.5% separately in Wuxi Chongshan waterworks at the same water temperature. Under the conditions of approximately equivalent in investment and running expenditure by technological and economical analyses, the efficiency of technological purification process was higher than that of routine purification process.

The loads on the arch dam and the materials physical properties of the dam and the bedrock are uncertain, and can be described with random variable. Due to the huge volume, the complex structure of the dam and excessive random variable, the reliability analysis of the dam is difficult. The dam is a higher order statically indeterminate structure, and the variation of the temperature obviously affects the stress and displacement of the structure, therefore, it is very important to consider the randomness of the temperature change load in the reliability analysis of arch dam. Based on the analysis of the stable temperature field, temperature rise and temperature drop field of the dam, the calculation method of temperature change field is further studied and applied in the reliability analysis of the arch dam. Considering random variables such as temperature change, water pressure, elastic modulus and strength of the materials, the stress and displacement of the arch dam and bedrock are calculated with a three dimensional finite element method, the limit state equations are established by RSM. Then the tension and compression reliability of the arch dam are analyzed using gradient optimization method. The results indicate that the temperature change field significantly influences the tension and compression reliability of the dam, and should be seriously considered in the reliability analysis of arch dams.

with the shortage of the raw material oil for producing bio-diesel in China, the oil, recovered from the used bleaching clay which often be discarded by vegetable oil factory, was used to prepare bio-diesel in this trial. Two-step catalyzed process was adopted to produce biodiesel from the oil. The effect of methanol-to-oil molar ratio, alkaline catalyst quantity, reaction temperature and reaction time on the preesterification and transesterification reaction was investigated through orthogonal experiments. Thus the optimal reaction condition came out. Firstly, the optimal pre-esterification condition, under which the end acid value of the product was minimum (i.e. 1.88 mgKOH/g),was to react for 40 h at 60°C,with a methanol-to-oil molar ratio of 12:1, and by adding alkali catalyst 4% based on the oil weight. Secondly，the optimal transesterification condition, under which the maximum yield of bio-diesel can reach up to 98.2%, was to react for 2.5 h at 60°C,with the methanol-to-oil molar ratio of 7:1, and by adding catalyst 1.25% based on the oil weight.

Spent bleaching clay(SBC) is a kind of discarded by-products from edible vegetable oil factory, often resulting in environment pollution. This study aimed to explore a feasible approach to comprehensively utilize the SBC for replacing coal ash to produce unburned and environmental brick(UEB). Through a series of experiments, and considering the cost and acceptability of bricks, the optimal conditions for producing UEB was obtained. The defatted SBC is added 25 %, fine fine sand 25 %, small pebble 30 %, cement 12 %, lime 8 %, the molding pressure is 20 MPa, and the molding moisture was 10 %. Under this condition, the average compressive strength of the UEB with 28-day storage can reach up to 18.11 MPa, higher than the value of 15 MPa in the unburned brick produced from standard coal ash.

Artificial media was used to enrich microbe and improve the water resource quality, therefore trace quantity organic pollutants of 1,2,4-Trichlorobenzene were biodegraded. The result of the experiment showed that, after domestication, the micro association enriched in the assembled medium could remove corresponding trace quantity organic pollutants in some concentration. When the temperature was 30 degree centigrade, the pH was between 6 and 9, the effect was the best about the removal on trace-quantity-organic pollutants water. A strain of bacteria was separated．At the same time, the congener trace quantity organic pollutants could be biodegraded. When the HRT was 6 days, the removal of trace quantity organic pollutants was between 70%～95%. It is evident that the trace quantity organic pollutants of 1,2,4-trichlorobenzene in the source water quality from Meiliang Bay in Taihu Lake can be well degraded by enriched microbes on the artificial media.

A magnetorheological digital flow control valve is designed using magnetorheological fluid (MRF) magnetorheological characteristics. The paper gives the magnetorheological digital flow control valve’s structure and mathematical model, and according to the working condition, proposes using the pulse width modulation (PWM) control mode which is one of the digital valve control modes to realize the flow control. Simulation analysis has been done and the results show that the magnetorheological digital flow control valve has good static performance, high frequency switching speed and response，easy to realize intelligent control.

On the basis of the brief overview of principles of the gas detection system, this paper has analyzed the characteristics, structure and identification theory to explain the method of gas detection based on an artificial neural network. And it has analyzed and researched gas detection system based on neural network and thus solved the problems such as cross-sensitiveness in present gas sensor. The results show that the gas sensor array "cross-sensitive" issue can be effectively solved through the combination of the pattern recognition of artificial neural network and the gas sensor array technology, which accordingly realizes qualitative identification for different gases and has broad application prospects.

In traditional gatekeeper architectures, call routing has many drawbacks such as long call setup delay, heavy burden on gatekeeper, low channel utilization and lack of scalability. We propose a scalable routing architecture for next generation gatekeeper, which is independent of real-time services plane. The design principle is gatekeeper call routing may be separated from its call process. Next generation multimedia networks, which feature with large capability and multi-domains, consist of Connecting Domain for call routing and Service Domain for call process. Next generation gatekeeper is the important entity in Connecting Domain, adopts Telephony Routing over IP to realize dynamic routing. We consider this routing as a special type of service and investigate the method of routing creation and routing provisioning. Validation in a testing platform shows that the proposed routing architecture can provide admirable routing performance. It also goes through stress and capability test. So it is a better choice for multimedia communication system with flexible extension and network cost saving.