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As for the low yield and high consumption of electrolyte in conventional anodization for TiO2nanotubes, several schemes were proposed to optimize the unit yield. The anode surface area per unit volume of electrolyte and the homogeneity of the electric field are found to affect the unit yield of well-structured TiO2nanotube besides voltage, F-and water content, reaction time and temperature, etc. Experimental results show that the unit yield over the cylindric electrodes quadruples in comparison with conventional anodization, which is attributed to higher anode surface area and homogeneous electric field. And SEM image indicates that well-structured TiO2nanotube arrays are fabricated. Thus it can be concluded that the unit yield could be increased by the method proposed in this paper and that our work provides a reference for the bulk preparation of TiO2nanotube and the energy-saving and emission-reduction in the process.

The 10NiO-NiFe2O4 composite ceramics doped with NiO were prepared with the cold isostatic pressing-sintering process. The effects of NiO doping order on the density, bending strength and electrical conductivity of NiFe2O4 composite ceramics were studied. The results show that, doping excess 10wt% NiO before synthesis of NiFe2O4 composite (doping order one) and doping excess 10wt% NiO after synthesis of NiFe2O4 composite (doping order two), the former’s samples have a better relative density 88.9% and linear shrinkage rate 9.82%, which is increased by 7.12% and 3.6% compared with that of latter’s samples, respectively. At the same time, the former’s samples also have a better electric conductivity and reach 1.29S/cm at 1233K, which is higher about 13.15% than those latter’s samples. However, the bending strength of the former’s samples just has 76.28Mpa, which is lower about 15.41% than that of the latter’s samples 88.04Mpa.

The hydrodynamic cavitation degradation of chitosan with NaNO2enhancement was investigated. The effects of NaNO2dosage, temperature, inlet pressure, PH value, the concentration of the chitosan were been discussed. It was found that the hydrodynamic cavitation degradation of the chitosan can be largely enhanced by adding NaNO2. It was also seen that the extent of degradation chitosan can be changed marginally with the temperature.

The PSK signals have been applied widely in wireless communication systems, such as in the military and commercial satellite system, the digital short-wave radios, and the ALE system of radio station, etc. This article will be discussed on the problem of how to identify the PSK subclass signal in the situation of non-cooperative communication. In addition, the blind identification method based on Wavelet Transform (WT) and Phase Clustering has been mentioned in the following without knowing any prior information. The first is to obtain the phase mutation phase difference by using WT, and then the modulation recognition of PSK subclass signal will be achieved through the threshold that ground on characteristics of PSK structure. When SNR greater than 2dB, the recognition rate of PSK subclass signal can reach more than 93%, in the condition of white Gaussian noise.

Crystal structure and X-ray powder diffraction data for the Al7Cu5Y ternary compound are presented. The compound crystallizes in the body-centered tetragonal with the Al7Fe5Y structure type (space group I4/mmm), the lattice parameters a = 8.6960(9) Å, c = 5.1256(7) Å, V =387.62 Å3, Z =2, ڑx =5.102 g/cm3, F30 = 275.5(0.0033, 33) and RIR =1.23.

The Al2M3Y(M=Cu, Ni) compound was synthesized by arc melting under argon atmosphere. The high-quality powder X-ray diffraction data of Al2M3Y have been presented. The refinement of the X-ray diffraction patterns for the Al2M3Y compound show that the Al2M3Y has hexagonal structure, space groupP6/mmm(No.191), with a = b = 5.1618(2) Å, c = 4.1434(1) Å,V= 95.6 Å3,Z= 1,ڑx= 5.7922 g/cm3,F30= 155.5(0.0057, 34), RIR = 2.31 for Al2Cu3Y, and with a = b = 5.0399(1) Å, c = 4.0726(1) Å,V= 89.59 Å3,Z= 1,ڑx= 5.9118 g/cm3,F30= 135.7(0.0072, 30), RIR = 2.54 for Al2Ni3Y.

In this article, an improved procedure based on ISO 5660-1 and ASTM E1474 was developed to ensure the effectiveness and reliability of cone calorimeter test of textile fabrics. In order to improve the instability for some easy shrinking fabrics exposed under heat in cone calorimeter test, an iron wire grid was applied to cover the top surface of polypropylene nonwovens and polyester fabrics to avoid drastic distortion caused by heating irritation. Results showed that the iron wire grid could avoid the distortion of the easy shrinking samples and stable test process, also success probability and results repeatability were also improved. A guiding effect was found during the test caused by the grid, which leaded to a better uniformity of polymer melt under the thermal or even on fire.

To study the influence of spandex on combustion behavior of textile fabrics, two kinds of nylon 6 fabrics were tested using cone calorimeter test and vertical burning test. Some key combustion parameters such as heat release rate (HRR), total heat release (THR) and rate of smoke release (RSR) were obtained from cone calorimeter test and afterflame time and damaged length from vertical burning test. Results indicated that the nylon 6 fabric containing spandex showed 21% higher HRR value. But THRs of the nylon 6 fabric containing spandex and the pure nylon 6 fabric were close. RSR curves indicated that RSR value of the nylon 6 fabric containing spandex was 73% higher than that of the pure nylon 6 fabric. The afterflame time and damaged length of the nylon 6 fabric containing spandex were much longer than that of the pure nylon 6 fabric. Spandex does accelerate the combustion behavior on Nylon fiber.

Nanoscale thermodynamics and kinetics were explored via the manipulation of Pb/PbO core-shell nanoparticles with a focused electron beam which served as a nanometer heating probe. In the electron transmission microscope (TEM), when an electron beam of moderate intensity was used to irradiate the nanoparticles, the amorphous particles gradually crystallized and showed distinct boundaries between lead cores and oxide shells. In such a way, the oxide shell could be easily measured to be 0.5-2 nanometers. With a high intensity electron beam, melting of the lead cores could be observed, indicating a sufficient local temperature increasing induced by the concentrated heat generated by inelastic electron collisions. The fluidic metal core erupted out through the cracked shells accompanied with the vanish of the boundaries between the cores and shells. Manipulations on nanoparticle decorated carbon wires proved that the lead oxide shells could sustain the irradiation of intense electron beam.

When short circuit faults happen near power plant or generator terminal, severe transient torque shock will act on the shaft system, which seriously affects the safe and stable operation of the unit. Using the increment transfer matrix method, the dynamic responses of torsional vibrations are calculated in this work. Combined with the complex Morlet wavelet and time-frequency contour map, the time-frequency domain characters of dynamic torque are analyzed. The analyzed results show that the torque value caused by three phase short circuit fault is largest. The order of torque value from high to low is two phase short circuit to ground, two phase interphase short circuit and single phase short circuit. The electric distance between short circuit point and generator is more short, and the torsional vibration is more serious.

The rolling force of the nine stand hot continuous rolling production line is predicted on the base of the deformation resistance estimation method. The predicted error is turned out to be about 10% through the comparing analysis of the predicted rolling force and actual rolling force, which proves the feasibility of the forecasting model. One can get the deformation resistance without experiments by using this method, besides, this method works in a high speed.

For ICT wide fan-beam scanning, there is a geometrical supposition that the object rotation center and the radiation source center intersect the image reconstruction center. In practice, the existing intersection deviation has influence on the image reconstruction precision. The image reconstruction mathematical model for shifted rotation center was established, and the relationship between the deviation error and reconstructed image precision was studied by simulation. As a result, for 512×512 CT reconstructed image, there is no distinctive difference between the reference image and the reconstructed image with eccentricity 0.1 pixels; however, with 0.2 pixels or more, the difference is obvious. So, for 512×512 CT image, the maximum permissible deviation of the rotation center is within 0.1 pixel dimension.

The active phased array antenna is a direction of modern radar development. But it is expensive. So the key in meteorological radar design is to get high ratio of capability and cost. We used 400 cross-polarization half wave diploes as radiation unit to get a high efficiency and reliability antenna, it also has low side lobe by Taylor weighting. 20 transmit/receive(T/R) modules produced too little heat to disperse, so it can be cooled by nature wind. 40 power dividers which one is divided into twenty parts and 1 power combiner decreased transmission loss. This antenna is fit for the need of wind profiling radar.

Many factors may affect array induction log, including skin effect. In this paper, according to relative formula deduced, a correction method of skin effect based on multi-frequency measurement signals is proposed using only the real component. This paper gives apparent conductivities that are from first order derivative correction and second order derivative correction by Chebyshev polynomial fitting method. Compared with measured data calculation, it showed that the correction results from the method above were in good agreement with the data from Express software.

In recent years, Electric Double Layer Capacitors (EDLCs) are gradually accepted by people and used in different areas as storage devices. This paper studied the working mechanism of EDLC and discussed two kinds of models of EDLC. Based on the advantages of EDLC, this paper proposed EDLC-battery combine storage system in stand-alone photovoltaic system and designed Energy Control System (ECS). Test results show that the hybrid storage system can collect more energy generated by solar panels, enhance the power output ability of energy storage system and extend battery’s life.

Thickness dynamic detection of the various types of thin sheets is a very important technology in industrial production and product testing. This paper describes a thickness detection system by the combine of mechanical amplification and electronic amplification. The working Principle is that the detected subtle variable signal with thickness changing is amplified applying leverage amplification effect, then re-amplified by processing circuit to identify thickness of the detected object in its high speed moving.

This paper analyzes the main theories and methods of the mechanical design, proposes that the design of mechanism scheme should be started from the Functional Analysis of mechanical product to seek functional solution and expand design ideas, proposes a design process model of mechanism scheme based on Functional Analysis (FA) to realize optimal design of mechanism scheme. In this model, description and decomposition of general function, function solving, functional evaluation and optimization were included. Taking scheme design of Li-ion battery bushing device as an example, this paper discussed the optimal method of mechanism scheme based on functional analysis. In order to obtain the most optimal scheme of bushing function, various mechanisms are conceived and proposed, analyzed and evaluated, the optimal mechanism scheme is selected.

This article introduced the four-terminal network method, Riccati transfer matrix method and finite element method respectively, and the applications of three methods in inherent characteristics analysis of turbine generator units’ torsional vibration. Considering an actual case of 600 MW units in one power, the natural frequencies and normal vibration mode of units’ torsional vibration were worked out through the three methods, and compared with the testing natural frequencies, the results showed that the calculation precisions of three methods are very high, and the three methods can be used to analyze actual units. Comparatively, the results obtained by four-terminal network method are closer to testing natural frequencies with a higher calculation precision.

The PPS needle nonwoven filter were treated by singeing, calendaring, dipping and covering with PTFE membrane. Their structure and property were studied. The results showed that the thickness of filter was decreased and their weight was increased by finishing. Their surface structure became denser after being treated. The pore diameter and filtration resistance of the filter were increased by finishing. The filtration efficiency of the filter was largely improved by finishing, especially covering with the PTFE membrane.

Circle, line and circular arc are the common basic elements in industrial computed tomography (ICT) image. The algorithm of recognizing such elements is the key to industrial CT image precise vectorization. An industrial CT image vectorization system has been studied, including different recognition methods for these elements. Firstly, based on facet model, the sub-pixel edge of an industrial CT image is extracted. Then, the circles are recognized by an improved algorithm based on probability of existence map, while the lines are recognized with the set intersection algorithm of fitting a straight line, and the circular arcs are recognized by the combination of the perpendicular bisector tracing algorithm and least squares function. Finally, the element parameters are measured according to recognition results, and the drawing exchange file (DXF) is produced and transmitted into the computer aided design (CAD) system to be edited and consummated. The experimental results show that these methods are capable of recognizing graphic elements in industrial CT image with an excellent accuracy, besides, the absolute errors of circles are less than 0.1 mm, the relative errors are less than 0.5%. It can satisfy the industrial CT vectorization requirements of higher precision, rapid speed and non-contact.

Enterprise Digitalization depends to a large extent on models of enterprise process built for design and analysis. From the perspectives of product life cycle and enterprise informationization lifecycle, the paper outlined a modeling scheme with IDEF suite which guided multi-view modeling of Enterprise Digitalization and its process, and provided a total solution for Enterprise Digitalization, which would facilitate internal informationization systems of enterprise integrated with networked systems outside the enterprise to support business operations, and make enterprise manufacturing sectors integrated with external networked manufacturing systems and production equipments seamlessly.

China’s manufacturing industry has obvious regional characteristics. With the regional economic development, how to improve the overall competitiveness of the regional manufacturing industry has become an important research subject for regional development. This paper analyzed the possibility of constructing Regional Manufacturing System (RMS) from the aspect of regional industrial association degree, puts forward the theoretical architecture of RMS which provides a reference model for the optimizing operation of the Manufacturing System and the business cooperation among the manufacturing enterprises in the region.