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In the process of the optimal allocation of microgrid system, two layers of coordinated dispatch strategies has been used in this paper. In the first layer, diesel generators and batteries are coordinated dispatched each other. The diesel generators begin to work before state of charge (SOC) of batteries reaches the lower limit. In the second layer, the power of batteries and super capacitors are distributed based on the dynamic characteristics of the hybrid energy storage system. Based on the coordinated dispatch strategies, the optimization models of DGs in microgrid system are constructed which considers the comprehensive cost of system as the optimization objective function and adopts the reliability indexes as the constraints. Genetic algorithm is used to solve the objective function. With the example system, it verifies the correctness and effectiveness of the models, the algorithm and the coordinated dispatch strategies.

In order to enhance the catalytic activity of the heterogeneous Fenton-like reaction, the catalyst of Fe3O4 composites was synthesized. The Fe3O4 was used as catalyst of the heterogeneous Fenton-like reaction to degrade methylene blue in aqueous solution. The influencing factors, such as pH, initial H2O2 concentration, dye concentration and catalyst concentration, were investigated. The results showed that the dye was effectively degraded at pH 3-8. The optimal condition was at pH3.5. The degradation efficiency of dye increased with the increase of the initial H2O2 concentration and reached maximum when the H2O2 concentration was 15 mmol/L. The degradation efficiency of dye increased with the catalyst concentration was 650 mg/L. The coexisted anions decreased the degradation efficiency of dye.

In this study, sawdust modified by cetyltimethyl ammonium bromide was applied to adsorb conge red in aqueous solutions. The characteristics of modified sawdust were characterized by Fourier transform infrared spectrum and scanning electron microscopy. The effect of factors, such as pH, contact time, temperature, dosage, and salt concentration, were investigated. The results revealed that the addition of modified sawdust can significantly increase the adsorption capacity of dye. The maximum adsorption capacity of dye on modified sawdust was 109 mg·g-1 at 328K. The adsorption processes were rapid within the first 30 min and reached equilibrium in about 150 min. The adsorption kinetics fitted well with pseudo-second-order model. The pH value of the solution had significant impact on the amount of adsorption. Adsorption isotherm fitted better with the Langmuir model and the adsorption was an endothermic process

The notion of Genetic Algorithm was presented by [1] with the purpose of making computers execute what nature does. GA is one of the best methods for solving the optimization problems which involve a large search space [2].

GA (Genetic algorithm) is an optimization method based on operators (mutation and crossover) utilizing a survival of the fittest idea. They are utilized favorably in various problems. (TSP) Travelling salesman problem is one of the famous studied. TSP is a permutation problem in which the aim is to determine the shortest tour between n different points (cities), otherwise, the problem aims to find a route covering all cities where that the total distance is minimal. In this study a single salesman travels to each of the cities and close the loop by returning to the city he started, the aim of this study is to determine the minimum number of generations in which salesman does the minimum path, cities are chosen at random as initial population. The new generations are then created iteratively till the proper path is attained.

Particle filter is the most successful nonlinear filter for nonlinear filtering. However its resampling process has the critical problem existing is the particle impoverishment problem. In this letter, we propose a new corrected differential evolution particle filter for solving this problem. In this algorithm, the particles sampling from the importance distribution are regarded as the initial population of the Corrected Differential Evolution (CDE) algorithm, and the corresponding weights as the fitness functions. The optimal particles are obtained by the process of the CDE algorithm. Experiment results indicate that the proposed method relieves the particle degeneracy and impoverishment and improves the estimation precision.

The photo-stimulating discharge (PSD) and ultraviolet-visible spectrometry were used to characterize the polyethylene (PE) and nano-hybrid PE trap before and after ultraviolet aging. In PE with the increasing of ultraviolet aging time, shallow traps reduce gradually and deep traps increase gradually, but for the nano-hybrid PE, shallow traps increase gradually and deep traps reduce gradually. Experiments show that: in the process of aging PE produces oxidation products such as carbonyl, hydroxyl etc. The incorporation of impurities can inhibit the injection of space charges, so as to achieve the purpose of improving electric field distortion in the body of the PE.

The paper attempts to realize the processing scheme of low cost dual sine wave generator. It used single-chip microcomputer and CPLD(Complex Programable Logic Device) as the control core. It maked use of CPLD and discrete component simulations to implement DDS principle. It utilized the filter circuit, integrated op-amp circuit and multiplier circuit instead of DAC chip. The range of frequency, amplitude and phase difference are 1Hz~1000Hz, 1V~3V and 0o~359o, respectively. The results show that a 2-channel sine signal generator can be designed with adjustable frequency, amplitude and phase difference.

Thermoelectric generation (TEG) produces electric energy from thermal energy directly, stably and environmental-friendly. As is pointed out, TEG performance is influenced by not only the intrinsic property of the material, but also the geometry designed, the operation conditions and the load scale as well. This paper intend to indicates how the temperature differential and the load resistance influence the output, how geometry demonstrate the performance of a TEG by experimental method. Test results is quite fit for the theoretic analysis.

In this paper, the effect of residual chlorine of hypochlorite (H) on high yield pulping with H2O2/CoSO4of wet stored bagasse was studied. Compared with control sample, the pulp of the bagasse wetstored with H or Ho (without residual chlorine) bleaching waste water had better pulping yield and strength, but the pulp optical property was lost seriously. If it had no requirement on the brightness, the wet storage with H or Ho bleaching waste water was a good method to improve the pulp strength and save clean water. In addition, the wet storage of bagasse using the H bleaching waste water without residual chlorine, the pulping properties was more stable than that of the wet storage using H bleaching waste water with residual chlorine. To the wetstorage with Ho bleaching waste water, the ideal treatment time was 16day.

Design & Build contract is the main contracting model in the international construction market which has a high standard requirement for the main contractor which encompasses analysis of the project and cost control, critical Value Engineering in Design review stage are necessary part for the whole project. This article elaborates how to do the VE during the design stage and the practice of approval process of VE is a very effective method to create benefits for the whole project.

This article research a low grade ore in Jinping, it contain 0.634% nickel, 0.329% copper, 0.047% cobalt, 30.18% SiO2, and 19.72% MgO. The rude ore contain amount of gangue minerals such as chlorite, mica, quartz, feldspar, which are easily slimed and have undesirable effect on flotation. In order to decrease such negative effect, this article investigated a method by “desliming-flotation” test, flotation test. Finally find that direct flotation is a promising method when utilizing carboxymethyl cellulose and sodium silicate as combinatorial depressants. And obtained the grade of bulk concentrate is 2.96% with recovery 60.82%, the recovery increased 2.43% compare with “desliming-flotation” test.

The ore assays 2.5g/t Au, 23.4% S and 56.6% Fe. This research enriched the gold by flotation, and recovered it by a chemical process. The obtained flotation concentrate contains 66.35%g/t gold and 37.06% S with recovery 96.14% and 96.42% respectively. A roasting process was conducted at 900-1000°C for 5.5hrs, followed by cyanide leaching of the residue. The gold leaching rate reaches 87.4% with an adsorption rate of 97.6%. Furthermore, the regrinding of the concentrate to 95% -0.18μm was conducted, and followed by cyanide leaching at pH11.5 for 12hrs. The results show the amount leached gold reaches 92.5% with an adsorption rate of 99.21%, which increases by 1.61% and 5.1% in comparison with the roasting-leaching process.

This study reached a gold ore which contain 3.83g/t gold, to investigate the available gold recover methods, direct cyanide leaching test and “biooxidation-cyanide” leaching process were utilized after enrich gold by flotation. When regrinding the flotation concentrate to 95% -325mm, the leaching rate of “biooxidation-cyanide” leaching reached 94.47%, compare with direct leaching, the leaching rate increased almost 67%. Obviously bacterium oxidation is a useful pretreatment for gold leaching.

The article proposed a new method for implementing linear phase FIR filter based on FPGA. For the key to implementing the FIR filter on FPGA—multiply-add operation, a parallel distributed algorithm was presented, which is based on LUT. The designed file was described with VHDL and realized on Altera’s field programmable gate array (FPGA), giving the design method. The experimental results indicated that the system can run stably at 120MHz or more, which can meet the requirements of signal processing for real-time.

Several polycarboxylate superplasticizers (PCs) with different side-chain structure have been synthesized. The effect of side-chain structure of PCs on hydration of C3A has been investigated by XRD, TG-DSC and SEM. The results show that PCs restrain hydration of C3A as a whole, but accelerate formation of Al(OH)3 and C3AH6; with increase molecular weight of long-side-chain, hydration of C3A is slowed, and the formation of Al (OH)3 and C2AH8 also become slowed. With increase proportion of long-side-chain, hydration of C3A and formation of C3AH6 are slowed, but existence of C2AH8 become obvious. The six-party flake hydrated products of C3AH6 are formed with a large number of grafted carboxyl.

A new adjustable voltage signal filament conversion alarm system is proposed which based on the traditional conversion monitoring system of train signal filament. This system adopts the embedded DSP processor monitoring the state of filament and uses the DSP to control PWM (Pulse-Width Modulation) duty cycle for preheating the filament，then gradually lit it. It avoids the breakdown of the filament break. The power line carrier technology is used for alarming signal transmission. This system is more practical than the traditional, which shortens filament switch time and improves the alarm accuracy.

In this work, Ziegler-Natta/Metallocene hybrid catalyst (Z-M) was prepared magnifying. The activity and copolymerization behavior of the catalyst were evaluated through 10L model device. Model experiment results confirmed that the catalyst was suitable for Spheripol-II PP pilot device. Subsequently, pilot experiment was carried out on 75 kgPP/h Spheripol-II PP pilot device. SP179 which was prepared by traditional Ziegler-Natta catalyst was used as a reference object. Pilot experiment results showed that: Z-M hybrid catalyst demonstrated good activity and copolymerization properties. The resultant polypropylene in-reactor alloys have better impact strength and flowability than SP179. These alloys showed good stiffness-toughness balance. The impact strength and the flexural modulus of the best alloy was 50 kJ/m2 at 23 °C and 848 MPa, respectively. The other performances were similar to that of SP179. But Z-M hybrid catalyst required lower feed ratio of ethylene than the traditional Ziegler-Natta catalyst for SP179.

quantization of channel capacity has significant value in information theory, and its concept is described in this paper. It is proved that channel capacity of quantum and classical communication theory has similar properties according to related definition. Channel capacity of optical communication is analyzed and studied. Then, the channel capacities with different parameters are calculated and exhibited. The relationship among the channel capacity C, average thermal photon numbers 〈M〉and average signal photon numbers K are displayed. As a result, by choosing the parameters reasonably, the signal communication efficiency is improved.

Simulation systems with hardware-in-loop are composed by three-Axis virtual flight motion simulator, simulation computer, load torque simulator, and visual simulation systems. Three-Axis Virtual Flight Motion Simulator are used to simulate the attitude of missile in simulation system with hardware-in-loop, so its performance influenced the result of simulation directly. This paper mainly analyzed the factors which influenced the performance of a three-Axis virtual flight motion simulator which we are used now in the lab, then analyzed the entire simulation system’s error caused by these factors through numerical simulation method. By analysis we can see that bandwidth is the main factor influenced the precision of simulation systems with hardware-in-loop, mechanical device installation error and measurement error may also cause some errors of the systems at the same time.

Using different long-chain alcohols (octanol, dodecanol, tetradecyl alcohol), maleic anhydride, allyl chloride, sodium bisulfite as the main raw materials, a series of polymerizable emulsifier--allyl-type sodium sulfosuccinic diesters have been synthesized in this paper. Through single-esterification and double-esterification, three diesters have been synthesized. The sulfonation conditions are as follows: using sodium maleic acid monoester as the phase transfer catalyst, sodium bisulfite and double-ester were allowed to react in the ratio of 1.0: 1.1 at 110°C for 4h in the solvent of a mixture of ethanol and water. The yield of sulfonation on sodium octyl sulfosuccinic diester and sodium dodecyl sulfosuccinic diester as well as sodium tetradecyl sulfosuccinic diester were 94.8%(Ⅰ), 96.78%(Ⅱ) and 93.6%(Ⅲ), respectively. All products were charac 4 terized by IR spectra and 1H NMR, and their surface properties were tested. The results showed that the surface properties of dodecyl sodium maleic acid monoester and tetradecyl sodium maleic acid monoester as well as sodium tetradecyl sulfosuccinic diester were better than lauryl sodium sulfate, and they were all suitable for being used as emulsifier.

In this study 50-70nm Nano-emulsion was synthesized by semi-continuous seeding emulsion with the compound of the different long-chain of carbon of the Allyl-type sodium Succinate Diester Emulsifier and traditional emulsifier. The type and amount of emulsifier, initiator and monomer ratio on the amount and impact of acrylic emulsion were discussed. The results showed that the obtained acrylic emulsion with the presence of polymerizable emulsion has significant lower water absorption and greater stability than that with the presence of traditional emulsifier. Measuring the solid content , particle size, stability, morphology, glass transition temperature and water absorption of the emulsion with the three types of allyl-type polymerizable emulsifier(sodium octyl allyl succinate (DOAS), sodium dodecyl succinate (SDAS) , tetradecyl sodium allyl succinate (TSAS)), considering various factors, sodium dodecyl allyl succinate has better emulsification.

Oleoyl chloride was synthesized by oleic acid and thionyl dichloride (SOCl2), and then reacted with chitosan in dichloromethane to obtain the oleoyl chitosan. Novel water-soluble oleoyl acetyl chitosan (OACh) was synthesized using oleoyl chloride reacted with acetic anhydride in pyridine. The chemical structure of the OACh was characterized by FT-IR, 1H and 13C NMR. There existed the peaks at 1743.9 cm-1 (C=O) and 1658.1 cm-1(C=C) in FT-IR spectrum, and the peaks at 170.8, 171.6 and 172.5 ppm which were assigned to the C=O of the oleoyl and acetyl groups in 13C NMR spectrum. The results indicated that OACh had oleoyl as hydrophobic moieties and acetyl as hydrophilic moieties.

Two-phase thin solid films consisted of Au nanoparticles imbedded in an amorphous matrix were prepared via a series of galvanic replacement reactions between chloroauric acid solution and reducing metals. The Au nanoparticles were in situ crystallized from the amorphous films rather than precipitated from solution directly. Amorphous films with partly crystallized Au nanoparticles only existed stably in dilute chloroauric acid solution. The higher concentration of chloroauric acid evidently promoted the strain-induced crystallization process and accelerated the crystallization of amorphous films into Au nanoparticles with many stacking faults, twins and dislocations. The coexistence of amorphous and crystalline Au nanoparticles makes it possible to synthesize two-phase nanostructured films.

Due to those disadvantages of the cycloidal-pin wheel transmission, such as low efficiency, low bearing capacity and poor rigidity, a new kind of axis-fixed cycloid transmission is proposed after generalizing those advantages of axis-fixed drive, cycloid drive and oscillating-tooth drive. Special output mechanism is unnecessary here because the motion is exported directly by the cycloid gear. Thus, there are many advantages of this new transmission-simple structure, small size, high transmission efficiency and large torsional stiffness. The transmission theory and basic structure are analyzed and the formula for the transmission efficiency is derived. A prototype is manufactured and the efficiency experiment is carried out on the test bed. The experimental result verifies the correctness of the therotical analysis.