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With the increasing in production and application, graphene will inevitable be released into the aquatic environment and have impacts on aquatic organisms. In this work, we investigated the toxicity of graphene to algal cells (Chlorella pyrenoidosa) in the presence of dissolved organic matter. The results...

Adiponitrile (ADN) as a promising solvent is widely used in high-voltage system. However, its effect on the graphite is not so ideal, for the reason that thermal instability at low potential and lower lowest unoccupied molecular orbital (LUMO) energy (-0.02223 eV) of ADN result in the reduction decomposition...

LiAlxMn2-xO4 (x = 0.00, 0.05, 0.10, and 0.15) is synthesized successfully using a sol - gel method at 700 for 10 h in air. X-ray diffraction (XRD) results indicate the LiAlxMn2-xO4 has a good crystallinity. Scanning electron microscopy (SEM) images show tiny distinction about the morphology and size...

Olivine LiMn0.4Fe0.6PO4 (LMFP) materials were synthesized by the modified sol-gel method with the addition of sucrose as an additional carbon source. Electrochemical properties of LMFP were advanced. The materials doped possess high reversible capacity of 107.4 mAh-g-1 at 0.2 C-rate and excellent cycling...

In order to reduce the heat input in arc additive manufacturing, pulse current was adopted. Single-layer beads and multi-layer walls were deposited by direct current and pulse current. The morphology, microstructure and mechanical properties of forming components were analyzed. Experimental results exhibited...

The aim of the article is to comprehensively test and explore the running performance of a new type of radiant air conditioning combined with fresh air system by simulating the climate that summer is hot and winter is warm, which is developed by the laboratory research group. The test results show that,...

In this paper, glucose and RDX as raw material, alveolate graphene was synthesized by shock wave in the detonation chamber. The results of TEM, HRTEM, SEM and XRD showed that alveolate graphene was synthesized in the wall of the detonation chamber. The ratio of RDX and glucose was an important role for...

Aiming at air pollution in Beijing-Tianjin-Hebei region, this paper carries out modeling analysis, considering different season pollutant composition and regional distribution differences; a kind of effective approach that analyzed air pollution relationship in the region is determined. In order to simplify...

With the rapid development of wind power technology, the size and number of grid-connected wind farms increase rapidly. Equivalent modeling of wind farms is the basis of the research on grid operating characteristics after wind power is connected to the grid. Long-distance transmission of large-scale...

In the process of electrolysis of rare earth metals, there are many factors that affect the final electrolytic production. These process parameters are usually determined by the workers in the factory according to their own experience, there is no statistical analysis of the scientific data to the final...

For the consideration of wastewater zero discharge,many coal-fired power plants reuse the reverse osmosis concentrated water and chemical drainage in the desulfurization system ,but studies of influence to the CaCO3 dissociation by highly concentrated saline wastewater are rare. This paper analyzes negative...

The fifth generation(5G) mobile broadband system will be able to achieve to increase the rate of flow up to 1000 times, enhance the number of connected devices about 100 times and the peak rate of 10 GBPS,guarantee the user experience rate about 10-100 Mbps,smaller time delay and higher reliability,and...

The application of Building Information Modeling (BIM) technology in managing the electric power construction project has not only become possible due to popularization of the technology, but also become necessary as the electric power project's size and complexity increases. In this paper, an electric...

In order to meet the requirements which a variety of DC power supply of a certain test equipment, a voltage stabilizing module which can provide a variety of DC voltage is designed. The voltage stabilizing module comprises a power supply switch, a DC/DC switch power supply, a DC/DC isolation module,...

A new method based on machine vision is designed for electric vehicle charging hole detection and location in order to solve the low efficiency, space limitations or leakage risk in artificial charging operation for electric vehicle and to realize the automatic charging based on robot. The method enable...

The Chinese government has put forward specific demands for the development of natural gas distributed energy, but there are still a number of constraints in the development process. This paper describes the technical principles of natural gas CCHP systems, analyzes its positive role, and demonstrates...

In order to reduce the impact of the decrease of inductor current during the freewheel switch on the pulse of next cycle, this paper puts forward a novel control scheme of pulse train (PT) according to the working character of the pseudo continuous conduction mode (PCCM) Buck-Boost converter. The novel...

In recent years China's wind power industry has developed rapidly. Yaw system is an important part of the wind power generation system. Its effectiveness not only affects the wind energy capture efficiency of the system, but also related to the safe operation of the wind power system. In this article,...

Vibration, especially at the circumstances of accidental falling down, always cause great damage to vehicle-mounted optics image stabilization system. Therefore, during the process of designing vehicle-mounted optics image stabilization system we need to consider how to reduce the harmful influence of...

Independent photovoltaic system needs energy storage in order to balance the power and improve its instability of power generation. A scientific control strategy can combine the PV cells to the battery system organically. The lithium-ion battery can be the bridge to achieve this target. This paper presents...

In view of the factors that affect PM2.5, we set up two models. Multiple linear regression models were used in the establishment of internal factors. Consider that there are too many external factors, we adopt the dimension reduction method, using the principal component analysis method. Through the...

This paper studies the case of the methane release of the Okhotsk Sea slope, It is made a large scale acoustic sweep focusing on the east slope of Sakhalin Island based self-developed software SONIC. Detecting and judging the location of undersea methane gas leaks (GF),reisen and seabed, surveying morphological...

In the paper a two-stage management scheme is proposed. At the first stage, the yardstick competition is applied to optimize the electricity energy rationing model to realize maximum energy consumption efficiency. At the second stage, the objective of load control is to achieve the maximum of energy...

Integrated with the characteristics of comprehensive assessment, comprehensive evaluation index system of power demand side management (PDSM) is established. A quantitative evaluation model of PDSM implementation is proposed. In the model, index weight is calculated through principal components analysis...

To keep the water temperature even throughout the bathtub and as close as possible to the initial temperature without wasting too much water, we establish a mathematical model of the temperature of the bathtub water in space and time to determine the best strategy the bather can adopt when bathing. On...

Metallic ceramic materials while maintaining the excellent properties of ceramic materials, but also have the advantages of a metal material, is an important new engineering materials. Iron-based composite applications broad, but not high abrasion resistance, wear-resistant engineering parts for such...

Anti- haze masks sell pretty well in recently years in north China. But it isn't a good thing. It means many cities in the northern China are under great pollution of PM2.5. Reducing the PM2.5 concentration and controling haze weather effectively are imminent.

In this paper, we have presented a simple model for making thin, angle-insensitive, broadband metamaterial absorber in microwave frequency. The proposed structure consists of a square loop imprinted on a aluminum-backed dielectric substrate. Numerical results show that a -10dB absorption bandwidth from...

Circulating water in thermal power plant as a unit of the cooling medium, takes a lot of heat and released into the environment, not only causes environmental pollution but also makes that the resource utilization rate of thermal power plant is not high. Through the water source heat pump technology,...

This paper discuss the smoke sensor and the relay control in the smart home.STM32 is used as the central part of the whole system and LwIP protocol is also applied to transfer data. The system uses the MQ-2 smoke sensor detect the concentration of combustible gases in air, and uses the SRD-05VDC-SL-C...

The imbalance of serially connected battery cells can easily lead to overcharge and over discharge, which can not only shorten the life of the battery pack but also reduce the energy efficiency. In this paper, aimed at the merit and demerit of existing measures, a new balancing method based on grouping...

The paper suggests a tension control method based on angular speed trajectory planning to improve tracking angular speed of fiber supply axis and precision of controlling optical fibre tension during the course of starting and stopping of optical fibre winding. First, kinematic trajectory of fibre extraction...

Based on the microstrip patch antenna radiation square chamfer, thereby introducing perturbation, single-fed microstrip antenna in circular polarization. High-frequency structure simulator HFSS antenna work at 2.45GHz of antenna design and simulation, the antenna has a circular polarization characteristics,...

Serious pollution of waste gas, waste water and waste residue are generated by calcium carbide-based polyvinyl chloride (PVC) production in China, especially the mercury pollution on account of using a mass of mercury chloride catalyst (HgCl2). This study introduced main methods and techniques which...

The Mesoporous Ge@C sphere has been designed via a modified St”ber method and an in-situ solution deposition. Compared with the pure Ge nanoparticles, the as-synthesized Mesoporous Ge@C sphere nanocomposites show much better cycling stability and rate capability. That as-prepared anode material can maintain...

There are dozens of anodes work in aluminum electrolysis at the same time. Because of the particularity of anode work and the waving ability of the melt, different current flow through different anode. Spectral characteristics of the current signal are important parameters of internal status changes...

Bioflocculant is a kind of natural polymer flocculant having a broad application prospect. Because it is non-toxic, biodegradable, no secondary pollution, etc, more and more attention is paid to its unique properties. The sorts of microbial flocculants are introduced briefly, and it also introduces the...

In order to improve the automation degree of robot, design size of the robot is reduced, a new industrial robot has been designed using PLC, servo motor drive and servo motor as the core component, through the PLC programming and the Modbus communication. IPC and Delta PLC of this kind of robot uses...

With the social economic development, the construction of urban rail transit project in time, more and more attention at home and abroad industry total FBI urban rail transit engineering systems. Urban rail system construction process is the most important mechanical and electrical systems, from systems...

With the continuous development of information technology, the level of development of automobile industry for a country is largely based on the level of automotive electronic technology. To implement modern electronic technology and computer technology in the automotive industry has been rapidly applied;...

Solar energy is a new pollution-free energy of maturetechnology andabundantreserves. This paper firstly introduces the concept and characteristics of the solar power, and then analyzes the necessity and feasibility of its applications in rural areas. Finally, this paper gives three examples of the applications...

SHEPWM, a method to eliminate the selected low order harmonics by optimizing switching time sequence, has been concerned greatly because of its advantages such as high waveform quality, high efficiency, full utilization of DC side voltage and small size of DC side filter. In this paper, amathematic model...

By exploring statistical process control (SPC) technology in the printing and packaging.

In order to research the performance impact of the mobile communication system from DTX setting, we test the partial section in Jiujiang city of Jiangxi province. The research shows if we import DTX technology in the mobile communication network system, it is obviously can improve the voice MOS value...

Soil water and nutrients are key factors for plant growth and development as they are involved in many processes in plants. The purpose of this study was to investigate the effect of water deficit in different growth stages on maize growth and water use efficiency. Randomized block design with three...

With the worsening of environmental pollution issues, applications of molecular biological techniques to the field of environmental pollution treatment have also drawn wide attention. These techniques can contribute to efficient treatment of environmental pollution through microorganism, and boast the...

The efficient and high coal output of China's opencut coal mining has made remarkable contributions to China's modernization construction. However, it should be noted that slope instability of opencut coal mines often gives rise to a series of geological disasters. Disasters of the kind will not only...

Second order nonlinear optical materials have been in a very important position because of its special excellent optical properties,The large nonlinear optical coefficient chromophore molecule is the key to the excellent nonlinear optical materials. In this study, the industrialized synthetic process...

The super capacitor has the advantages of high power density, short charging time, long service life and so on. It has a great development potential in the field of energy. Continued growth in market share will further stimulate the super capacitor of R & D, in order to meet the needs of commercial prepared...

Through 4 weeks HiLo training of 72 SD male rats, some very obvious changes of Rat skeletal muscle SDH was found in a quiet state. Some changes of SDH were found immediately after exercise but not obvious, but three hours later after exercise the change of Hypoxia and exercise compound group was more...

The lead acid batteries used by electric vehicles have always presented the problem of low efficiency and high loss. In order to promote the popularization and application of electric vehicles, many researchers have put forward the fast charging method of battery. Based on this understanding, the fast...

Fiber reinforced polymer Resin matrix composites have the good performance, and it is widely used in various fields to release the impact load. Over the past era of time, natural fibers have gained bursting attention than ever before from all the other research areas around the world. These natural fibers...

In an attempt to isolate high-quality, total RNA from flower buds of sunflowers (Helianthus annuus). We have already improved the SDS method. After adding liquid nitrogen, we have to grind the material down. After that we add protein -DNA precipitation, wash it with the addition of different kinds of...

Catalytic combustion is an important technique for utilization of fossil fuels, and the research on catalytic combustion mechanism could provide theoretical basis for the selection of catalyzer.In this paper, we adopt the Ni catalyst to promote the oxidation combustion reaction, and carry out study on...

Avionics system presents a comprehensive, modular, network and other trends, with a high degree of resource sharing, data integration and software, highly intensive and so on. Integrated avionics system to ensure a high degree of information sharing, enhance the efficiency of aircraft task execution...

Natural preservative and biological corrosion has become a modern food science and biological sciences frontier and hot, with a screening of natural resources has become a new trend antibacterial activity biotechnology, food research. Lactic acid bacteria used in food and feed has a long history, it...

An important factor in civil engineering to promote social progress and economic development, civil engineering involves the use of many of the materials and equipment. In order to improve the stability and reliability of civil engineering, science needs to use the material. Composite material is a material...

In the actual construction process, civil engineering will have plenty of material to use different materials bear different tasks. With the construction of civil engineering technology to improve and progress, all kinds of new materials continue to be applied to civil engineering construction and the...

Loess deposition age sequence during the Holocene in the region is established by the description of rock character of loess-paleosol stratum the partition and contrast of stratum of section in Xi'an ShaoLinyuan. According to the character of the curve expressed by substitution indication of climate...

The temperature of the evaporator is lower than the air dew point temperature when the air conditioning is running in summer. The vapor in the air condenses into a large amount of water on the surface of the evaporation pan. Conventional processing methods of condensed water now are directly discharged...

Nowadays, saving water and saving energy saving has become a trend of lifestyle. Therefore, it is quite necessary and practical to find an optimal injection method to save heat and water, which can be widely used in many various situations, such 0000as having a bubble bath, keeping tropical fish and...

Power system,which has large-scale and complex structure,plays a significant role in national economy development.However, the system components will occur various malfunction or be an abnormal operation state due to various man-made and natural factors.This paper aims to ensure the power grid's safe...

Currently, it is difficult to detect the overheat faults of high-voltage disconnecting switch and send out early warning signals effectively and immediately. Hence, an early-warning model was built by using radical basis function (RBF) neural network. The model takes three factors into consideration,...

The problem of electric power harmonic brought by nonlinear load in power grid has become more and more serious. The paper analyzes the main source and the causes of harmonics. The harm brought by electric power harmonic in electric equipment itself and power grid users are also be discussed. The paper...

This paper mainly introduces the working principle of double 12 pulse inverter. By analyzing the operation process of the inverter, obtaining the expression of voltage and current in both DC side and AC side respectively, and getting the relevant calculation formula of angle. Connecting two a 6 pulse...

In recent years, the relevant standard release also makes high temperature insulation material used in the mobile substation main transformer to the systematization and standardization. Meanwhile, the mobile substation is also gradually to greater capacity and higher voltage level terms. Understanding...

Objective: To make a study of the separation and purification of purified corosolic acid from loquat leaf extract using the traditional Chinese medicine technology and the separation process in different samples of human gastric carcinoma BGC823 cell growth inhibition. Methods: 95% ethanol extracts were...

Purpose of this paper is to explore Herba Sarcandrae anti-tumor effect and related mechanisms. Methods Now Chinese Journal Full-text Database (CNKI), Chinese Biomedical Literature Database (CBM), Wanfang database and VIP database aggregated from 1994 to the relevant literature and 2009, and summarized...

An overview of several different extracts of traditional Chinese medicine and the impact of animal hair follicle belong to different species, thereby regulating mechanism of traditional Chinese medicine and its extract clear hair follicle development.

The construction must seriously study material standards, and have knowledge of building materials, and fully understand the scope and use of properties of the coating was not to be careless with the wrong paint, applied over the interior facade. After the sun and rain, appeared in a short unexpected...

Wind power technology is currently the world's fastest growing and has the most economic benefits of all kinds of renewable energy generation technologies, but the randomness and intermittent of the wind speed and will directly affect the wind farm output. In this paper, the impact of new energy wind...

This paper presents the novel research on the low power and low voltage CMOS integrated circuit design patterns and general methodologies. With the integrated circuit technology to the rapid development of the deep sub-micron and nanometer order of magnitude, how to reduce the power consumption of the...

By means of electromagnetic transient simulation program, a detailed model of High Voltage Direct Current (HVDC) power transmission system actually operated in current power grid is built, and detailed variation of electric quantities, the duration of commutation failure and its impacts on AC power transmission...

Memristor is the fourth fundamental circuit element predicted by Leon O. Chua theoretically in 1971 and realized by HP scientists in 2008. In this work, we investigate the characteristics of canonical Chua's circuit and Chua's circuit based on memristor. More importantly, the response characteristics...

The analysis of UEFI firmware storage system is rare in available papers about UEFI.We introduce the Logical and physical structure of UEFI firmware. Then we analyse the elements -- firmware volume, firmware file, firmware segment -- that composed the UEFI firmware and give related code define and pay...

The methanol extract of Schisandra chinensis is evaluated for their antimicrobial activity and mechanism on four common gastrointestinal bacteria. The antimicrobial activity is tested through inhibition zone, MIC and MBC. The antibacterial mechanism is studied based on the growth curve and cell membrane...

The theory of sustainable development is now widely used in various fields. This paper will quantify the water resources based on sustainable development. We use the ecological footprint model to carry on the analysis and select Shandong Province as the research object.

The formation of secondary organic aerosol products from photo-oxidation of 1,3-butadiene and ozone was investigated in static smog chamber. The effects of ozone concentration and relative humidity on the particle formation were studied. Research suggests that with the increase of ozone concentration...

The air samples in two different stages (high temperature sterilization stage and fermentation stage) of penicillin fermentation workshop were sampled in fermentation process to investigate the pollution level of VOCs in fermentation exhaust. Results showed that the staggered variation of VOCs in penicillin...

Harmonics in power system bring many adverse effects to the distribution system. Based on the analysis of the reason of harmonic generation, this paper puts forward the calculation method of harmonic analysis in the simplified circuit model, establishes a synchronous motor power grid model, simulates...

In order to describe the mechanical property of polyurethane elastomer (PU elastomer) under quasi-static compression, we have adopted universal tester of South JingKe electronics to proceed with equivalent static compression for polyurethane elastomer material, and studied the mechanical behavior of...

In the visual axis stabilization system under the background of the shipboard, it is necessary to use the high-frequency and low-frequency of the FOG output signal, respectively. For the practical application, this paper proposes a method which contains de-noising and signal separation. This paper analysis...

In order to increase the applicable input voltage scope of Pulse Adjustment (PA) controlled converter, a new control technique for DC-DC converters, Multiple Sets of Pulse Adjustment Based on Input Voltage Feed-forward Compensation (IVF-MSPA), is proposed in this paper. By introducing input voltage feed-forward...

Analytic Hierarchy Process(AHP)Model is established to determine the weight of each indicator to evaluate the water scarcity. Then the Entropy model is built to overcome weakness of excess subjective factors in AHP. By using Product integration method to combine two models, we determine the final indicators...

We address establishing a comprehensive mathematical model to analyze the performance of right-hand rule in right and heavy traffic. First, we build the overtaking model by considering some retricted conditions including the safe distance, speed limitations and human judgment. Next, we take account of...

Taking into considering of the difficulties and urgency in the treatment of geological hazards such as slope collapse, in light of the deficiencies in previous treatment methods, and also in view that the high polymer material, which has been widely used in geotechnical engineering, possesses the merits...

The utilization of water treatment plant for waste of calcium-containing sludge was analyzed, and as a desulfurization agent, desulfurization experiment was studied professionally. The analysis of causes of the foaming phenomenon simultaneous in desulfurization tower was also taken into account,proposing...

The spread of virus is based on some mathematical models. An epidemic model SEIHCR was build up to take the special features of Ebola into consideration. These are treatments from hospital, infectious corpses and intensified contact tracing. This model is developed from the traditional SEIR model. The...

The paper proposes an improved underdetermined blind source separation (UBSS) method of nonlinear mixture, which can be applied to the communication signals' separation during data link transmission in the complicated electromagnetic environment. The proposed method combines the advantages of wavelet...

The amidoxime mesoporous silica (AO-SBA-15) was prepared and its effects of time, temperature and initial concentration on the adsorption of the aqueous zinc ion were studied. The results indicate that the adsorption performance of zinc ion was good. When the equilibrium concentration was less than 2...

In order to adapt to the grid test study a high power alternating current grid simulator that can simulate the network for various status and faults is proposed. The simulator could work in four quadrant operations,so that energy generated by distributed systems could flow into grid. The fundamental...

This paper mainly studies and analyzes the output voltage wave which is based on the control of step form SHEPWN. We solve the Switching Angles in the condition that the number of H bridge converter unit is n=3 and that the modulation ratio amplitude is m=0.8. We solve the problem by changing the nonlinear...

ZrB2, YAG and Al2O3 are widely applied because of some excellent performances, but ZrB2 is easily oxidized in the high-temperature air. To keep advantages and improve disadvantages of ZrB2, the shell-core structure A12O3-Y2O3/ZrB2 composite powders are prepared by the co-precipitation methods, the high...

In the paper, ten sites is selected to investigate in Zhanjiang roof greening. Results show that the roof of Zhanjiang is given priority to with simple roof greening. Commonly used there are 75 plant species belong to 46 families and 72 genera. Bougainvillea spectabilis Willd., Hibiscus rosa-sinensis...

The characterization of two categories by plant residue and animal waste derived biochars obtained at 600 øC heating treatment temperatures (HTTs) were described. Plant biomass and animal waste biochars exhibit large physicochemical heterogeneity due to variations in biomass chemistry and combustion...

A patterned silicon nitride (SiNx:H) passivation layer was employed to improve the performance of silicon/poly(3,4-ethylenedioxythiophene):poly(stylenesulfonate) (Si/PEDOT:PSS) hybrid solar cells, achieving of an enhancement in the power conversion efficiency (PCE) of 0.6%. The insertion of patterned...

Limestone Wet flue gas desulfurization(WFGD) technology with high efficiency is being applied most widely for control technology of SO2 all over the word. It is widely used in coal-fired power plants, which will produce wastewater containing high salt and heavy metals. Currently, the desulfurization...

By using Gaussian software to make input file of water molecules , then in the Linux environment, the parallel CPMD was applied to simulate the nature of the hydrogen bond in aqueous solution through trajectory computation of input file . Then extract the track fragments selectively which meets hydrogen...

The hydraulic parameters are important for the numerical computation in which hydraulic conductivity is one of the most frequent. The horizontal component of hydraulic conductivity could be obtained with field trial. And the vertical component is usually computed with the horizontal one by dividing a...