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In order to study the influence of the splitter plate in the elastic support system, the SST k-omega turbulence model is used to solve the problem, and the cylindrical system with splitter plate is numerically simulated by overset mesh. This paper studies the effect of the splitter plate on the vibration system at different deflection angles. The results show that the splitter plate has little effect on the system when the deflection angle is low. When the deflection angle is about 10 degrees, the system vibration characteristics will have a sudden change, the amplitude will decrease, and the vortex frequency will increase. Between the deflection angle of 10 degrees and 45 degrees, as the deflection angle increases, the amplitude increases and the vortex frequency decreases. It can be seen from the motion trajectory that the deflection angle changes suddenly after 10 degrees, and the system has a very small amplitude between 10 degrees and 25 degrees. In this declination interval, the splitter plate controls the vibration of the cylindrical system better.

In this paper, a new ultrasonic phased array full focus imaging method based on oblique incidence is proposed to solve the problem of the non-destructive testing of the internal defects in the GIS (gas insulated switchgear) shell welds. By using wedge coupling, the measured weld is far away from the near-field range of the transducer, and the detection angle range can be increased by changing the propagation direction of the acoustic beam. Based on Snell's law, the propagation characteristics of the ultrasonic wave in the interface are studied. On the basis of the conventional ultrasonic array matrix and the full focus imaging algorithm, by introducing the energy attenuation calibration coefficient of the acoustic wave propagation through the wedge, the correction amplitude of the specific focus point p(x, z) is obtained, The non-destructive testing of weld defects of GIS shell in the spot is carried out, and the test results show that the qualitative and quantitative detection of the weld defects can be well realized by using this method.

Sacrificial anode protection of stainless steel is required in severe application environment. In this paper, two kinds of Fe-based sacrificial anodes (20CrMo and 20CrMn) were used to protect 310S stainless steel. Protective effects were evaluated through constant current test and self-discharge test. Scanning electron microscope (SEM) and Energy Dispersive Spectrometer (EDS) were used to analyze the surface morphology and element composition of 310S cathodes after the tests. Experimental result indicates that both Fe-based sacrificial anodes have a driving voltage over 500mV, which enables a longer life than those of the Al-based or Zn-based anodes. The 20CrMo sacrificial anode presented more stable working potential, better state of activation and more uniform corrosion behavior than 20CrMn sacrificial anode did. The 310S cathode protected by 20CrMo had smoother surface and less oxide formation on the substrate.

A series of photocatalyst Bi1-xLaxVO4 (0.1, 0.3, 0.5, 0.7) powders were prepared by hydrothermal method. The composition, structure, morphology and photocatalytic activity of the samples were researched by means of modern testing techniques. Bi1-xLaxVO4 showed excellent visible-light sensitivity and photocatalytic activities. The degradation rate of sample with x = 0.5 on rhodamine B reached 90 %, which was much higher than that of pure BiVO4.

7072Al is widely used as cladding layer for heat-transfer components. In this paper, the microstructure, mechanical properties and electrochemical properties of simulated-brazing 7072Al alloy with Zn addition were investigated. Transmission electron microscopy (TEM) observations revealed that, in the simulated-brazing state, Zn-addition could promote the precipitation in the 7072Al alloy. Tensile testing results indicated that, in comparison with 7072Al alloy, the mechanical properties were improved after Zn-addition. Electrochemical testing results revealed that the simulated-brazing alloy showed a negative shift of the corrosion potential with the addition of Zn element.

In this work, self-cleaning cotton fabrics were prepared based on the TiO2-SiO2-Polydimethylsiloxane (PDMS) composites. TiO2-SiO2 composites were synthesized by depositing TiO2 nanocrystals onto preformed porous SiO2 and PDMS was used to enhance the linkage between TiO2-SiO2 composites and cotton fabrics. The TiO2-SiO2-PDMS composites coated cotton fabrics show superhydrophobicity with a water contact angle of 157°because of the abundant of methyl groups and hierarchical roughness features of the coated cotton fabrics. Meanwhile, the TiO2-SiO2-PDMS composites coated cotton fabrics display photocatalytic property, which were analyzed based on the removal and degradation of rhodamine B (RhB) under ultraviolet light. Abrasion resistance test indicates that the coating possesses a good mechanically durability.

This paper designed the self-insulation concrete block meeting the energy-saving standard in northeast severe cold zones and introduced the whole design process of this new self-insulation concrete block. The size of the block is 390mm*280mm*190mm. We designed 15 types of block altogether, used ANSYS finite element software to analyze the combined influence of thermal engineering, mechanics and unit weight, got the best block type Q3 and optimized it twice in mechanical property and thermal performance, made the load-carrying capacity of the self-insulation concrete block tend to be more reasonable, and improved the thermal performance at the same time.

The flight process often in turbulence. Atmospheric turbulence causes flight bump, long time will cause damage to the aircraft structure fatigue. This paper establishes a model for atmospheric disturbance, flight simulation. Based on the aircraft through all kinds of atmospheric disturbance is studied. The use of embedded database and real-time simulation platform, built a run, in the PC machine can be used for dynamic model for real-time simulation of flight simulator.

To deal with the super short-time energy management of microgrid, a mixed-integer programming optimization algorithm combined with genetic algorithm is proposed. Firstly, this paper introduced the short-time economic dispatch mathematical model of microgrid. Secondly, a two-layer optimize algorithm is been developed. The lower layer takes no account of power flow constrains, convert the model into a mixed-integer programming problem through linearization techniques. The lower layer gets the generation schedule, and then passes the data to the upper layer. The upper layer takes the power flow constrains into account, optimize the unit output based on genetic algorithm. The simulation result shows that the proposed algorithm achieves a better complementary of the two kinds of optimization algorithm. At the same time, the optimization result also shows the effectiveness of the algorithm.

Both single pollution index and integrated pollution index methods were employed in the present research to assess the heavy metals pollution of soil in the threeRosa roxburghii TrattPlanting Bases (located in Qianxi County and Qixingguan region in Bijie, Longli County in Qiannan), the baseline values of heavy metals in soils in Guizhou Province, Environmental Quality Standard for Soils (GB15618-1995) and Conditions of Green Food-tech0.nical Environmental Quality for Production Area (NY/T391-2000 and GB/T18407.1-2001) were applied as references. National Food Safety Standard-Contaminants in foods was applied to evaluateRosa roxburghii Trattfruits. The results suggest that the studied soil samples conformed to Environmental Quality Second Level Standard for Soils and Green Food-technical Conditions. The overall quality of the soil conditions was uncontaminated, but point source pollution phenomenon existed. Hg, Pb and Cu pollution were the main factors contributing to the rise in comprehensive pollution index from the threeRosa roxburghii TrattPlanting bases. It was found that levels of As and Cu did not exceed the limited standard of the soil，while Hg, Cr, Cd and Pb exceeded the standard in different degrees in studiedRosa roxburghii Trattplanting bases. The rates of excessive quota of Hg, Cr, Cd and Pb in the studiedRosa roxburghii Trattfruits was 6.67%, 13.33%, 73.33% and 100%, respectively. The mean accumulation coefficient of Cd forRosa roxburghii Trattfruits was up to 1.20. The mean accumulation coefficients for concerned heavy metals were in the order of Cd > Cu > Pb > Hg > As> Cr. The relationships between concentrations of heavy metals in soil, leaf and stem samples were weak. However, significant correlations were found between concentrations of As in soil and leaf samples (r = 0.928), and concentrations of Cr between in soil samples and Cr in leaf samples (r = 0.733).

The Chengzigou hydropower station of composite geomembrane rockfill dam as an example of the dam body and the composite geotechnical membrane stress and deformation characteristics are used nonlinear elastic model - Duncan EB model establish three-dimensional finite element model of rockfill,by using the large finite element softwareFLAC3D,whice provided geogrid element to simulate lexible geomembrane shear interaction with soil.The stress and deformation of the dam and the composite geomembrane is calculated under two conditionscompletion period and impoundment period.And analyze the change of the stress and strain distribution rule,whice will provide the basis for the design of the geomembrane.

First-principles calculations within the density functional theory (DFT) have been carried out to study the interaction of hydrogen atom with transition metals (Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) doped Mg (0001) surfaces. First we have calculated the stability of the transition metals atom on the Mg surface, On the basis of the energetic criteria, all the elements except Zn prefer to substitute one of the Mg atoms from the second layer, while Zn tend to substitute one of the Mg atoms from the first layer. In the second step, we have studied the interaction between hydrogen atom and the transition metals doped Mg (0001) surface.we have studied the interaction of a hydrogen atom with the transition metals doped Mg (0001) surface. The results show that for transition metals atoms doped Mg (0001) surface in the second layer, it not only enhances the chemisorption interaction between hydrogen atom and Mg surface, but also it benefits hydrogen atom diffusion in Mg bulk with relatively more diffusion paths. However, when the Mg surface doped by elements such as Sc, Ti, V, Cu and Zn, hydrogen atom chooses to bond with transition metals atom and block the diffusion of hydrogen atom into Mg bulk, while when the Mg surface doped by elements such as Cr, Mn, Fe, Co and Ni, hydrogen atom chooses to leave from transition metals atom thereby promoting the diffusion of hydrogen atom diffusion into Mg bulk. Charge density difference plots shows that electrons are transferred from electronic states of transition metals atom to the orbital of hydrogen atom which cause attractive interactions between hydrogen atom and transition metals atom and reduce the energy barrier of the hydrogen atom diffusion into Mg bulk. Our results show that useing transition metals (Cr, Mn, Fe, Co and Ni) as catalysts for the hydrogenation/dehydrogenation of Mg bulk samples and provide more diffusion paths of hydrogen atom, they are beneficial for the diffusion of hydrogen atom to Mg bulk and improve significantly the hydrogenation kinetics property of Mg surface.

A macromoleclar polymer (Sulfonated polystyrene - Polyhydromethylsilane, SPS-PMHS) was synthesized from polystyrene by sulfonation, acylation, amination and hydrosilylation. Characterization of the hydrosilylation process was performed with attenuated total reflectance-fourier transform infrared (ATR-FTIR) spectroscopy. The SPS-PMHS was homogeneously dispersed in the Nafion matrix with doping level of 33.3 wt %. Experimental results show that the yield tip-displacement values of the polymer nanocomposite have not been enhanced, but the nonaqueous working time is 2.7 times higher than that of the virgin nafion.

Since the generation of prestressed concrete, the causes for losses of prestress have been always analyzed and studied and many achievements are made. However, as the losses of prestress result from many factors, it is very complicated to calculate various losses of prestress accurately. The formulas and methods used in the concrete codes of various countries for calculation of prestress losses vary according to their different purposes. This paper focuses on US code ACI 318-05, Eurocode EN 1992-1-1 and Chinese code GB 50010-2010 (the code for design of concrete structures), and carries out a comparative analysis in terms of losses of prestress for the three codes above.

The design on the system of low-voltage power line carrier-current communication based on OFDM was finished in this paper. Then model of the system was simulated and the modulation and demodulation of OFDM were realized. The results show that the integral performance can be enhanced with channel code. And the bit error ratio (BER) of the system is different with several sub-carrier wave modulation modes. This system could satisfy the requirement of power line communication basically.

The aim of this study is to investigate the effects and mechanism of ammonium chloride (NH4Cl) on the apoptosis induced by cisplatin in human lung cancer A549 cells. MTT assay was used to detect the state of cell growth. The expressions of apoptosis related proteins were detected by Laser scanning confocal microscopy and western blot. MTT tests showed that the non-toxic dose of NH4Cl could increase the inhibition rate of A549 cells induced by cisplatin. The expression of active caspase-3 in cells treated with non-toxic dose of NH4Cl combined with cisplatin was higher than that in cells treated with cisplatin alone. Western blot analysis showed that the expressions of apoptosis related proteins were significantly increased in the combination group. These results indicate that NH4Cl can enhance the cell apoptosis induced by cisplatin in A549 cells.

There are some key points such as important load during design Bare Concrete Formwork, method about achieveing standard on Bare Concrete use Stride Shearing Force and Deflection Boundary theory.

With the rapid development of Chinese economy and the speeding up urbanization, urban rail transit has entered a rapid development period, which results in more and more energy consumption. Meanwhile affected by energy source and environment factors, the state has implemented energy-saving emission reduction strategies in various fields, so energy efficient management for urban rail transit becomes more important. Based on the analysis of energy consumption problems in urban rail transit, the paper designs urban rail transit energy efficiency management system from the aspects of overall architecture, service architecture and application function, and provides technical support for the realization of the software system.

The microstructure and electrochemical properties of Ce-containing 7072 Al alloy were investigated through transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Tafel polarization analysis. It was found that Ce alloying could result in a formation of finer grains in the simulated brazing alloys. The 7072 Al alloy with 0.15% Ce had desirable distribution of precipitates. The electrochemical testing results indicated that Ce element had a great impact on the corrosion potential of the alloy tested in 0.5% NaCl solution. Alloying with 0.15% Ce element could make the corrosion potential shift to inert direction and reduce the corrosion current density. An excessive Ce addition could weaken its positive effect on the corrosion resistance of the Ce-containing alloy.

The treatment of iron tailings has been a global issue, which has bought serious impact on the environment, it was considered to be a potential threat to human lives. In the present paper, the development situation of iron tailings utilization in China is investigated, the problems existed is analyzed and suggestions are provided, which are hoped to be valuable in the future research and the development of functional materials and products. Keywords: Iron tailings, resource utilization, functional materials, environment protection

A new type of composite structure, precast concrete tube column is proposed, and its axial compression performance and the seismic performance of beam-column joint are studied. Nine groups of precast concrete tube column models and three groups of common solid column contrast models with the same outer diameters (600,800,1000mm) were established by software ABAQUS, and a beam-column joint model for horizontal low cyclic loading was established combining with practical project. The results show that the ultimate bearing capacity of precast concrete tube column is higher than that of the common solid column with the same outer diameter by 5% to 20%, and it increases slightly as the thickness of tube increases. Displacement - load hysteresis curve of the beam-column joint is relatively full under cyclic load, and the slope of skeleton curve decreases slowly, which provides an important basis for engineering applications.

A new type of reinforced concrete (RC) structure termed concrete filled fabricated concrete tubular (CFFCT) was economically evaluated. Construction schedule time and construction cost of CFFCT and RC columns were analyzed both in case studies of building structure and bridge structure. A comparative analysis was done on two types of columns by studying on single column and present value of total construction cost. The results show that use of CFFCT shortens the construction schedule time and lowers the total construction cost. The investigation of the multistory building shows that using CFFCT results in an average of 2.31% savings on total project cost, an average of 28.67% savings on total column costs, 25.12% savings on total project time period, and 45.22% savings on columns construction time period. And the investigation of the bridge shows that using CFFCT results in an average of 3.27% savings on total project cost, an average of 46.87% savings on total column costs, 15.68% savings on total project time period, and 29.90% savings on columns construction time period.

Many salts will have decomposition reaction after being heated. The type of decomposition product and difficulty of decomposition reaction differ greatly due to the difference of salt types. To deeply understand the essence of thermal decomposition of salt, master thermal decomposition laws and use these laws to explain the reaction result and accomplish some inorganic synthetic reactions, it is necessary to make a systematic discussion and analysis on thermal decomposition.

Nucleophilic substitution reaction is an important reaction of haloalkane. By such a reaction, halogen functional group can turn into various other functional groups. Therefore, it is widely used in organic synthesis and there are many researches on its reaction mechanism. Hydrolysis reaction of bromoalkane is especially a nucleophilic substitution reaction that is studied quite fully. This paper mainly discusses the nucleophilic substitution reaction on saturated carbon atom.

The effects of polysaccharides extracted from persimmon (Diospyros kaki) fruits (PFP) and its sulfated derivates (PFP-S) on activity of mouse peritoneal macrophages (PM) were evaluated by measuring their effects on the viability, nitric oxide (NO) production, cytokine (TNF-α, IL-10 and IL-2) production and gene expression. The results showed that both PFP and PFP-S significantly increased the viability and the productions of NO, TNF-α and IL-10 with the increase of the substitution degree (DS) and dose. Of the fractions, PFP-SIII (DS 2.5, Mw 48kDa) was the most potent inducer of NO and cytokine production, increasing production of NO and expression of cytokines (IL-10 and TNF-α). It was supposed from this result that PFP-S might act as an inducer of macrophage functions against pathogens, which might be affected by the sulfate content of polysaccharides made great role in regulate of immunomodulatory activities.

The TiB2films were prepared on AISI 316L substrate by magnetron sputtering with various powers to investigate the influence of sputtering power on the microstructure and hardness of films. The crystalline structures and cross-sectional morphology of TiB2films were characterized by X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM), respectively. The hardness was measured by nano-indentation. XRD patterns showed that the preferred orientation of TiB2films transferred from (100) to (001) with the increase of power. It can be observed that each film processed homogeneous by the cross-sectional images. The hardness of films varied from 21 to 32 GPa depending on the value of power. The enhancement of hardness may be attributed to the effect of the residual stress state and the microstructure of films. Furthermore, the effects of power on hardness of TiB2films were discussed in details.

In the present study, we apply microcontact printing (μCP) to create extracellular matrix (ECM) stripe patterns on polystyrene (PS) surfaces and then the effects of these patterns on osteoblast cell behaviors are investigated. The results demonstrate that osteoblast cells preferentially adhere and grow on the protein areas, leading to the deformed cell morphologies. Compared to the adherent cell on isotropic ECM coating, the deformed cells express more type I collagen and osteocalcin, indicating that the patterns can enhance protein expression of osteoblast cell by changing the cell morphologies. Therefore, it is possible to improve cell functions by carefully designing pattern shapes and sizes. We believe that the present results can contribute to development of the novel biomaterials and engineered tissues for bone repair, where the enhanced protein expression is needed.

The early-age concrete properties are the basis for structure nonlinear analyzed under construction structure period. But at present the study on early-age concrete is lagging behind which there is not suitabel theory. This paper takes early-age C20 concrete as an example to analysis the early-age concrete properties. According to the distribution characteristics of early-age C20 concrete experiment data in the octahedral stress space, using section function expression form, by the method of mathematical derivation and linear fitting, the failure criterion and the elastic yield criterion of early-age C20 concrete materials in the octahedral stress space are established. By comparison between failure criterion and elastic yield criterion of C20 concrete, the subsequent yield criterion could be derived based on the non-uniform isotropic strengthening criterion.

This paper investigates the optimal control of multi-joint manipulator from the view of Riemannian geometry. We construct Riemannian manifold equipped with kinetic energy metric about configuration space, and regard constraints work space as submersion submanifold. We define the covariant forms for velocity and acceleration on Riemannian manifold, which make all expressions be independent of the choice of the coordinate systems, and research the relationship between the Euler equation and the geodesic equation, and show the property of preserving energy along geodesic paths. We investigate the hybrid position and force control under constraints, and analyze the corresponding stability based on Lyapunov’s method.

Based on the analyses of the traffic characteristic of urban expressway ramps metering, a hybrid automaton model for expressway ramp metering is set up and switching control methods of hybrid system is proposed using the hybrid automata theory. Compared with fixed-time ramp metering, Alinea control algorithm and fuzzy control algorithm in different traffic flows, and simulated in the Paramics traffic software, the results show that the method of switching control based on hybrid automata theory is more effective than a single control algorithm.

The effect of Zn addition on the microstructure, tensile properties and electrochemical properties of as-annealed Al-Mn-Si alloy was investigated through TEM observations, anodization metallography, tensile tests and Tafel polarization analysis. High density precipitates were found in the Zn-containing alloys and the alloy with 1.5 % Zn had the most uniform precipitation. The Zn element could restrain recrystallization of the alloy. Tensile test results indicated that Zn has a great effect on tensile strength of Al-Mn-Si alloy. The alloy with 1.8 % Zn addition had the highest ultimate tensile strength. The electrochemical testing results indicated that Zn element had great impact on the corrosion potential of the as-annealed alloys tested in 0.5% NaCl solutions. Alloying with Zn element could make the corrosion potential shift to negative direction but increase the resistance to pitting corrosion

According to the phenomenon of insufficient utilization of the geothermal water in the heat supply system of a campus in Tianjin, an optimization retrofit scheme with cascade utilization of the geothermal water is introduced in this paper. The energy efficiency of the heat supply system was improved after the retrofit: 30% of the electricity consumption was saved and an extra building area of 120,000 m2 could also be served by the same heat supply system.

According to the features of energy utilization in campus buildings, a hybrid system based on heat sink form with solar energy and ground source heat pump is introduced in this paper. By theoretical calculation and experimental validation for heat transfer effect of the heat sink and economic analysis of fuel cost, it was confirmed that the system could efficiently match solar energy with ground heat. Renewable energy storage was realized and operation cost was saved.

Based on the field research, we found that in the course of high-speed face milling aluminum, Cutters components prone to deformation as the role of load such as Centrifugal force, Cutting force and Preload. The deformation will directly affect the the dynamic performance of the cutter. So its necessary to reveal the dynamic response of the deformation cutter. We base on the Dynamic model and the modal analysis model, Obtained the deformation cutters dynamic simulation which the cutters deformation is come from the ANSYS. At last we got the method of identifying cutters deflection deformation by vibration signal. With the method we can effectively identifying milling distortion In the cutting process.

The fender forces in the rigid and flexible berthing systems, the displacement of berthing platform were determined in the ship berthing with different berthing speeds, as 10,000 tons oil storage tanker vessel for example. The comparison on test data were carried out for the differential analysis on the fender forces between the rigid and flexible berthing in still water. In contrast to the rigid berthing system, if the berthing speed of the ship is limited to 1 knot, the fender force can be decreased by 50% around in flexible berthing which absorbs energy through the displacement of the berthing platform and the power-absorbing effect was improved with the increase of the ship berthing speed; while the fender force were diminished dramatically, the displacement of berthing platform can satisfy the requirement of the engineering.

During rubber processing, many factors can affect the mechanical properties of rubber composite. The influence of ambient temperature and content of titanate coupling agent and modified attapulgite (OAT) on mechanical properties were investigated by preparing rubber composites and measuring. The results showed that the rubber composite which was filled 40phr OAT modified by 3% titanate and prepared at the ambient temperature above 20 had best tensile strength (18.93MPa). There is a special phenomenon that the tensile strength had a rapid increase from 4.72MPa to 18.93MPa, when the content of OAT changed from 20 to 40phr in the experiment.

By fitting calculation of functional relationship between charge quantity and temperature on condition that powders were shielded, a device was proposed to measure spontaneous polarity of powders, and samples of typical tourmaline were measured. The results showed when tourmaline powders of different origins were heated to 80, minimum value of spontaneous polarization strength was 3.204×10-4C/m2, and maximum value was 1.53×10-3C/m2. The conclusion was in accord with results got from crystal structure analysis, and repeatability r was 1.726×10-6C/m2with 95% confidence probability.

The artificial plywood materials were prepared using natural minerals and inorganic oxide powders as the main fillers for urea-formaldehyde resin adhesive instead of flour. The method mentioned above has advantages in saving food resources, reducing cost of plywood, improving the quality of plywood and decreasing the release amount of free formaldehyde. On the basis of the research achievement both domestic, foreign and our experimental data, this paper mainly discussed the effect of filler on adhesive properties, bond strength of plywood, and free formaldehyde content, which provided reference for development of green environmental protection and low cost urea-formaldehyde resin adhesive minerals composite filler.

The test apparatus of infrared emissivity used in powders industry was researched by controlling the temperature accurately and collecting the signals of surface temperature of two standard samples and a test sample. The tourmaline samples from ten mines had been tested by the new test apparatus. Compared with the results from FTIR, it was shown that average value of relative error was 0.378% and repeatability error was less than 0.6% after correcting by the coefficient kc = 0.958.

The main properties of tourmaline are far infrared radiation, spontaneous polarization, widely used in the fields of saving energy and environment. Tourmaline as catalyst have extensive applications in the fields of environmental protection, fuel combustion, air purification, printing, deodorant, antibacterial, as well as wastewater treatment of dyeing and aquaculture.

Fixed beam gantry for large CNC boring and milling machine to bear the beams on the rail side apron, and other parts ram weight under weight and size of deformation produced a result of the assembly accuracy of less than standard, use three-dimensional modeling software UG and finite element analysis software ANSYS for dynamic beam gantry milling machine CNC beam three-dimensional modeling and modal analysis, based on weight and apron beams, the weight of ram and other components in relative deformation amplitude, and the gantry milling machine processing characteristics and overall design of the structural characteristics of machine tools, assembly of the beam is proposed to note some issues and some ways to solve the assembly size requirements, through finite element analysis of the deformation and comparing the actual measured value, the experiment proved data on-site assembly solution with a good theoretical support.

The effect of activated water on the growth of epidermal cells of newborn mice is studied by cell culture in vitro. To investigate the influence of activated water on the growth of cells, parameters of water are measured. Then, biological mechanism about how the water effects on cells is discussed. It shows that activated water has the promoter action to growth of cells comparing with non-activated water by detecting optical density (OD) at 570 nm with the MTT colorimetry. Statistically, the probability P, less than 0.01, is obvious. We believe that water cluster has become smaller and small water clusters are beneficial for transporting nutrients.

In this work, purified and surface-pretreated attapulgite was added to the common recipe of the skin-care cream and the improved cream products, containing clay minerals, were prepared. In order to optimize the moisturizing and sunscreen properties of the cream products, different attapulgite addition was tried and the grinding time of the attapulite was considered. The result shows that, by adding attapulgite clay, the moisturizing and sunscreen properties of the skin-care products can be improved respectively.

The reaction kinetics of amination of monomethoxylpoly (ethylene glycol) (mPEG) with melamine (MA) at the molar ratio of 1:1 was studied by FTIR. This amination reaction was carried out with potassium hydroxide as reaction catalyst under high-pressure conditions at different temperature (160 °C, 170 °C, 180 °C, and 190°C) for different time (2 h, 3 h, 4 h, 5 h and 6 h). A series of melamine aminated monomethoxylpoly (ethylene glycol) (MA-mPEG) were synthesized, and the long chain of polyethylene glycol ether was grafted on the amino groups of melamine by amination. The amination kinetics parameter of reaction order and the activation energy are about 1.5 and 45 KJ/mol, respectively. In addition, the grafting amination yield increased with the number average molecular weight of mPEG at the same reaction condition.

The reaction behaviors of a heterobifunctional MCT/VS reactive dyes with amino groups and phenol groups were investigated at pH 7-10 and temperature 50-90 °C by means of high performance liquid chromatography. Optimum reaction conditions for MCT/VS reactive dye and amino/phenol groups were obtained at 60-80 °C and pH 8-9. As amino groups and phenol groups reacted with MCT/VS reactive dye individually, amino groups preferred to bond with VS groups but phenol groups preferred to MCT groups. As amino groups and phenol groups coexisted in the MCT/VS reactive dye solution, there was a main reaction product originated from the MCT/VS reactive dye molecule bonding with phenol groups by its MCT groups and bonding with amino groups by VS groups respectively.

The main transmission route of infectious disease is the dispersion of exhaled particulate matter with pathogen attached on. Therefore, the exploration on the dispersion routine of bio-aerosol is a significant approach for researching control method of indoor infection. Based on the continuous point-source dispersion model, this article puts forward corresponding modified methods according to different airflow patterns and make it become a reasonable predicting tool for the dispersion of bio-aerosol in indoor environment. Such predicting tool is also validated by a bacteria emanating experiment whose results show a notable improvement on predicting accuracy of the modified model. Additionally, the experiment results also indicate that the under floor air supply pattern embraces preferable controlling ability on indoor infections for each occupant in an office environment.

In order to probe a new enhanced oil recovery technology during the post polymer flooding process, we constructed the 16SrDNA gene library and analysed PCR-DGGE during the post-microbial enhanced oil recovery of polymer flooding process. Through the research for the reservoir system, we studied the microbial community structure and genetic diversity after polymer flooding process, made the phylogenetic analysis. It is supposed to provide a dependable basis for MEOR through directional control microbial community of reservoir, through development and application of effective microbial flooding technology.

This paper concerns the dynamic modeling and vibration control of a space two-link flexible manipulator. Two types of PZT actuators, PZT shear actuator and torsional actuator, are used to suppress the bending-torsional-coupled vibration of the space manipulator. Using extended Hamilton’s principle and the finite element method, equations of motion of the space flexible manipulator with PZT actuators and tip mass are obtained. Based on modal analyze theory, the state space model of the system is then used to design the control system. A linear quadratic regulator (LQR) controller is designed to achieve vibration suppression of the space manipulator system. From the numerical results, we can get that the proposed controller has a suitable and efficient performance suppressing the bending-torsional-coupled vibration of the space two-link flexible manipulator.

Based on the operating characteristics of tracked vehicle transmission system, the dynamic characteristics and research methods for transmission system were summarized. According to the analysis of above, a new test rig which can simulate the steering process of tracked vehicle was proposed, and the methods for driving and loading system were determined, the test procedures and evaluation system for the tracked vehicle transmission system were summed up. It provides a practical test method for the design and development of tracked vehicle transmission system.