The discharge characteristics of meshtoplane dielectric barrier discharge (DBD) were shown by measurements of their voltage and current waveform, and Lissajous figure. The influence of the dielectric permittivity, the thickness, and the gas gap distance of the barrier on the dissipated power in DBD regime were studied experimentally, The discharge characteristics of three different electrode structures (mesh-to-plane, multi-needle to-plane and plane-to-plane) DBD reactors were compared. The results show that, under the same applied voltage, the dissipated power increases with the increasing of dielectric permittivity and decreasing of thickness of the barrier, but the electric field and dissipated power in DBD regime decreases when the output power of power supply keeps stable and the gas gap distance increases, By contrast, meshtoplane electrode discharge is relatively homogeneous and stable.

Reactive Oxygen Species（ROS）solution，which was produced through strong ionization discharging plasma，was used to kill Bacillus subtilis varniger. ROS solution was sprayed to cope with biological pollution. Several operation parameters, such as PH value, solution temperature, spraying time and effect time, were studied. The effects of operating conditions on the killing rate of Bacillus subtilis var.niger were analyzed The results show that the treatment efficiency of Bacillus subtilis var.niger in alkaline solution is higher than that in acid solution. The killing rate of Bacillus subtilis var.niger increases with the decrease of the temperature and the increase of the spraying time and effect time., and the order of strength of the affecting factors is effect time>spraying time>pH value>solution temperature.

Experiments were performed to evaluate the efficiency of benzene decomposition by using packedbed coaxial cylindrical dielectric barrier discharge reactor. The packed beds were filled with glass beads with a diameter of 3 mm. The catalysts prepared were 8% Mn/γAl2O3, 8% Fe/γ-Al2O3 and 8% Co/γAl2O3. The benzene was allowed to have access into the air inlet of the reactor before being introduced into the discharge regions in quartz glass tubes. Then it passed by discharge regions of the packedbeds, and finally flew out. The experiments were conducted to investigate the packed beds with or without glass beads, the initial concentration of benzene and the catalysts' effect on the degradation of benzene respectively. The results indicate that higher efficiency is achieves with the packed beds filled with glass beads; with the increasing of initial concentration of benzene, degradation efficiency of benzene decreases; the order of the degradation efficiency of the catalysts is Mn>Co>Fe.

Measurement of optical emission spectroscopy was taken to detect OH radicals  produced in the pulse discharge in air with unsaturated water vapor under atmospheric pressure. The analysis of the relative changes in optical emission spectroscopy indicates that: the number of OH radicals decreases while the diameter of the nozzle electrode increases; with the increase of humidity, the relative number of OH radicals first increases, then decreases，but increases again; the distribution of OH radicals in the discharge electric field gradually decreases from the center to the left, right and below, while it first increases and then decreases when it is upward.

Low temperature plasma technology can be used to treat the refractory biodegradable organic compound. There are many strong oxidizing active species (such as H2O2, ·OH, O3) in the plasma channel when voltage discharge is high. A needleplate reactor was used to investigate the generation of H2O2 in the pulsed discharge system. The effects of different experimental conditions on H2O2 generation, such as discharge voltage, gas flow rate, electrode gap and pH value, were studied. Experimental results show that as discharge voltage increases, the concentration of H2O2 in water increases; when the gas flow rate is 1.6 L/min, the concentration of H2O2 is the highest in water. The electric intensity increases as the electrodes gap decreases, and thus the东concentration of H2O2 increases.

The degradation of pNitrophenol (PNP) in water using a gas phase surface discharge reactor was researched. The effects of the operating parameters, such as air flow rate, oxygen content and pH value of initial solution on the degradation were discussed. The results show that the PNP degradation efficiency increases with the flow rate of the carrier gas; the optimal gas flow rate is 1.50 m 3/h under which the degradation of PNP reaches 90%; when the oxygen content is 41% in the carrier gas, the degradation efficiency of PNP achieves 99%; under alkaline conditions, about 96% of pNitrophenol is degradated, which is higher than those obtained under acid and neutral conditions; the removal of COD of PNP is about 74.5%, and the energy efficiency of the removal of COD is up to 8.86×10-3mg/J. 

The key technological problems with these performance tests on EMP protection devices were analyzed. The process method of distortionfree transmission of pulse signals was presented. Based on microstrip designs, the special clamp for performance tests on EMP protection devices was developed. Via Vector Network Analyzer, the transmission characteristics of that clamp were evaluated. The test results indicate that microstrips can be used in the performance tests on EMP protection devices to reduce the influence of highfrequency reflection and radiation field created by strong EMP field and to improve the transmission quality of the pulse signals. It is by using the special clamp that the tests results can better reveal the characteristics of EMP protection devices.

The radiated field values are not specified in the ESD standard (IEC 61000-4-2) According to IEC61000-4-2 standard specification, the radiated fields on the IEC test platform were analyzed. The experimental results show that on the test platform: 1) the strength of the Efields and Hfields varies with the change in distance; 2) the strength of the Efields and Hfields varies greatly in close proximity to the discharge point, but varies slightly at the far distance.

Based on the experiment of aviation fuel injection electrification, electrostatic potential and leakage current to earth on metal stents insulated from earth and exposed to spraying fuel  were tested, and the possibilities of risky electrostatic discharge on the stent were elaborated. The study shows that the voltage on metal stents reaches the safety range when the stents are on the ground. 

The optimized functions of multilayered electromagnetic protection materials have been established, based on the requirements of maximum protection bandwidth and given thickness. The genetic algorithm has been employed to optimize the multilayered protection materials with given thickness and shielding efficiency. Protection materials with good electromagnetic protection properties have been obtained by using the genetic algorithm.

new devicecontrol grid was introduced into the powder electrostaticeliminator to improve the efficiency of electrostatic elimination. The control grid was a cylindrical metal foil, pasted in the pipe wall of PVC. The efficiency of electrostatic elimination was improved by controlling the polarity of the grid voltage. Ways of designing an intelligent powder electrostaticeliminator are presented.

The rules of powder corona discharge in concentric cylindrical electrodes were studied. Through analyzing corona discharge mechanism, the fluid model for charged particles was established. The rules of variation in the density of the powder particles in the process of discharge were analyzed, and a theoretical analysis of the functional relationship between the corona current density and concentration of charged powder particles was undertaken. The results of the theoretical analysis are in accordance with the experimental results.

prevention of marine biological invasion is a major demand of our country, and the ballast water treatment system of ships, based on hydroxyl radicals, has been developed. According to the advanced oxidation process principle, a novel method was proposed for  OH radical generation by using strong electricfield discharge under atmospheric pressure, and a non-equilibrium plasma generator was built. Oxygen and gas phase water were ionized by high energy electron, and then dissociated into free active radicals or ions. These active radicals or ions were mixed well with water, followed by serious plasma chemical reaction to form  OH radicals. The onboard trial was carried out on “Yulong” ship with the treatment capacity of 250 m 3/h. The biological efficacy and relevant chemicals analysis were investigated. The test results indicate that the application of hydroxyl radicals is found to be an effective method to kill algae and bacteria; the results meet the standards set by regulation D-2 of the Convention; the concentration of tribromomethane as the main disinfection byproducts is 88.14 μg/L; no significant differences are obtained from water qualities, except dissolve organic carbon (DOC), particle organic carbon (POC) and total suspended solid (TSS); the DOC increases over time; on the contrary, POC  decreases; TSS decreases over time. The  OH ballast water treatment system provides a successful example during voyage and technical support for the development of global shipping market.

Human body capacitance of miners decreases quickly to one tenth while body moving voltage increases up to a dozen times at the narrow exit in the coal mine , which is easy to be a source to detonate the gas. The study of the electrostatic bleeding rules of human body shows that the electrostatic halflife is relative with the material resistivity. From a series of simulation experiments of the gas exploded by human body electrostatic discharge, the relationship between different human body capacitance, discharge gap, gas concentration and gas explosion is obtained.

A contrastive analysis of API RP 545 and the simulation lightning experiment with floating roof storage tanks by the Institute of Safety Engineering lead to the conclusion that the  design of the experiment with floating roof tanks by the Institute of Safety Engineering is more suitable for the actual operation. Based on the experimental results, it advances the proposal that the shunts on the second seal should be removed, and that multiple retractable grounding fitting between the roof and tank wall should be used to replace the shunts. The design is found to be feasible, easier to implement and maintain, and more secure and reliable .

To investigate the decomposition characteristics of volatile organic compounds (VOCs), gaseous benzene was introduced into the wirecylinder dielectric barrier discharge (DBD) reactor and degraded by bipolar pulsed high-voltage. The effects of discharge gap, discharge length and Catalyst Mn/ γAl2O3 on the degradation of benzene were studied. The results indicate that: under the same voltage, the reactor with a small discharge gap has the larger injecting energy, which is favorable for the degradation of benzene; the order of the positive effect of discharge gap on the removal of benzene is 3.5 mm>6 mm>8 mm; the decomposition efficiency of benzene increases as the discharge length increases; more benzene is further removed due to the addition of Mn/ γAl2O3; the degradation efficiency of benzene and the carbon oxides selectivity are both improved with the amount of Mn increasing to 15%，91.8% and 94.6% respectively.

view of the question of big workload and complicated procedures when designing electrostatic detecting electrodes with the method of ANSYS simulation, it introduces a simulation method using Maxwell software of electromagnetic field.  With Maxwell software, the mathematic model for the detecting system was built, based on the theory of electrode designing. With the optimized parameters, a distributed nephogram of inductive electric field on electrodes was formed. Simulation results were obtained from the visual contrast of the color list. The results show different values of the electric field energy with corresponding colors. The test results indicate the simulation results with Maxwell software are effective, the capability of the detection system is improved, and that the method is easier to adopt.

Rollingvaneelectrostatic detectors were arrayed as a square to obtain information about the aerial target. According to the structure of the rollingvaneelectrostatic detectors and the theory of electrostatic induction, the location algorithm for aerial target was derived. The orientation software and interface were compiled, based on the location algorithm. The location software can show the position of the aerial target in real time. The location algorithm proves to be feasible. 

Water-based biocompatible fluid was prepared with magnetite particles (Fe3O4) coated with βCyclodextrin via the two-step co-precipitation method.  The thermomagnetic stabilities around induction heating in an alternating current (AC) magnetic field were investigated when the fluid was heated in the AC magnetic field for 900 s, the temperatures of magnetic fluid containing Fe3O4 nanoparticles or Fe3O4/β-Cyclodextrin composite nanoparticles rising to 63 ℃ and 53 ℃ respectively. The hyperthermic tests prove that the magnetic fluid is suitable for localized hyperthermia treatment of cancer. 

Based on the data of the original blade scanning, a CAD model was created through point phase, polygon phase and fashion phase. In polygon phase and fashion phase, Geomagic Studio software was used to repair the defects on the scanning model, and the data were gained for further repair of the actual blade.  

A linear 4cylinder gasoline engine crankshaft is researched. A 3D model using CATIA was established at first, and then a static analysis, modal analysis, and fatigue analysis were undertaken in HYPERMESH (HM) solver. And the stress, strain, natural frequency, fatigue life, and damage cycle were obtained. At last, via the data management by MATLAB, the optimal solution was obtained from the comparison of the parameters.

Time-lag neutral delay differential systems are researched. The research focuses on the Asymptotic stability of the differential systems, based on Lyapunov method and linear matrix inequality (LMI). The timelag stability criteria for，and t,σ h(t) are put forward, and two numerical examples are provided to show the effectiveness of this approach.

The Robust consensus of multiagent time delay network with a timevarying reference state is introduced. By defining a proper controlled output, this problem was transferred into a H∞ control problem. Then, a control protocol with a timevarying reference state was proposed. Sufficient conditions were obtained to ensure multiagent consensus with a timevarying reference state by applying linear matrix inequalities (LMIs) techniques. Finally, simulation was presented to validate the theoretical results.

A method of detecting moving objects is proposed by combining the Gaussian mixture model with the canny operator. First, the Gaussian mixture model was employed to extract color information and to update the background information. Second, the canny operator was employed to extract edge information. Last, color information and part of area information were integrated for segmentation, which improved the ability to detect moving objects where edge information was distinct. An improved Gaussian mixture model and a traditional canny algorithm were employed in the experiment. Experimental results indicate that the proposed method is superior to the traditional Gaussian mixture model.

The causes of the rutting, cracks and other diseases of intersection asphalt overlays are summarized and analyzed according to the S120maintenance engineering practiee. Meanwhile the mechanical characteristics of the intersection of pavement structure were analyzed regarding  the operating characteristics of intersections. The maximum shear stress area and antirutting area of asphalt overlays were identified on the old cement concrete pavement，which provides the basis for the antirutting, cracking design of intersection pavement structures and materials. Based on the results of the mechanical calculation, several suggestions on the combination of pavement structures and selection of materials for urban road intersections are provided.