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Development of dyes with high fixation and salt-free dyeing process for cotton and silk is essential for the textile industry due to ecological and economical reasons. In this study, the synthesis of novel crosslinking polymeric dyes and its salt-free crosslinking dyeing method are described, and cotton and silk have been effectively dyed with the novel dyes. Excellent dye fixation of over 99% on silk and over 97% on cotton, were achieved in a padding process in the salt-free condition. The dyes showed excellent wet fastness values equal to those observed for the standard reactive dyeing.

The amphibious vehicle is a special vehicle, which has performances of land vehicles and ships. Compared to the ships, amphibious vehicle can be sailed fast in the water and driven flexibly on land. Therefore, it has a wide range of applications in the fields of military and civilian. The status of dynamic research of amphibious vehicle is described in this paper. The current situation of dynamic research is presented firstly. The methods of establishing the dynamic model when amphibious vehicles travel linearly and turn were included. Then the modes of propulsion when amphibious vehicles sail in the water are introduced. In the end, the paper summarizes the methods of establishing hydrodynamic model of amphibious vehicles, which are used to analyze the resistance of amphibious vehicles.

To control the stability of deep well broken surrounding rock, single-hole sonic method is used to test the loose circle of-1180 east-rock main roadway and its damage range. The study indicates the loose circle is about 1.8 ~ 2.2 m, which is typical large loose circle. And its button is slightly larger than two sides’, right side slightly larger than left. The roadway rock has some engineering features of soft rock. The broken and expand deformation of loose circle does large, difficult to support. Combined support is usually used in this rock condition.

This paper aims at presenting a theoretical basis as well as a simulation data for both strength check of grab crane and amendment of dynamic load. It introduces the methods and results of conducting a finite element analysis on the metal construction of grab crane which was accomplished by using ANSYS Workbench. Firstly, a simplified model of the grab crane’s metal construction was established. In accordance to the different working conditions of the grab crane, static analysis, modal analysis and transient analysis were performed. The results of simulation showed that the main beam’s maximum deformation was 1.8mm and the maximum equivalent stress was 78.367MPa, the design of grab crane’s metal construction was feasible.

In recent years radar life detector is the rapid development product of information technology and Biomedical Engineering, and its core is to not contact with the human body, but to realize the detection of the parameters of human life which has a breakthrough, and to explore with full range. This paper first analyzes the principle of radar life detection system and the implementation scheme of each module technology. Based on this, DSP digital signal processing method is used to design the structure system of radar life detector. Further based on the DSP signal processing principle, PD distance tracking is used to approximately simulate the time domain of human heartbeat signal. The results show that the tracking effect that is under this structure is remarkable, which has provided technical support for the practice of the area to a certain extent.

Performance of coherent atmospheric optical communication system with heterodyne detection and LDPC codes was evaluated over atmospheric channel attenuations of which are about 20-30 dB/km. To reduce bit error and enhance the system performance LDPC code was implemented in system. Combining coherent detection and LDPC codes could reduce the received power requirement ~4 dBm at the BER of 10-9.

A dynamic comprehensive evaluation method of power quality based on incentive and punishment mechanism is proposed. At the beginning, the index system is designed and unified. Next, the incentive and punishment mechanism model of each index is established. Then, the vertical and horizontal scatter degree method and minimal variability theory are applied to calculate the comprehensive evaluation value of all the indices on every time period and on the whole time series respectively. Finally, the realistic example demonstrates that this method can easily differentiate the quality of different evaluation objects.

Eddy current stimulated thermography is one of the advanced nondestructive testing (NDT) methods, which integrates eddy current and thermography together to take advantages of two typical NDT techniques. The theoretical basis of eddy current stimulated thermography was discussed first. After that, the experiment system was introduced in detail, including the system structure, coil design and selection of test parameters. Experiment and simulation results were presented. The infra-red (IR) images obtained by experiment and the temperature distribution images captured with simulation study were analyzed using feature extraction. The features of the IR images and the simulation images show that eddy current stimulated thermography could be applied to identify and diagnose damage of metal component. The probability of application of eddy current stimulated thermography was discussed as well.

A lot of lubricating oil is consumed in the process of the cold rolling of stainless steel. The oil recovery is very important due to some reasons, such as the cost of production and environmental pollution. A set of lubricating oil recovery system is designed and constructed, which is equipped with a set of expanded size recovery oil pan for recycling splashed oil, a high efficiency two-level mist recovery system for recycling the oil mist, and an oil collection platform for recycling the oil rolled. The system is effectively to recovery more of lubricating oil through actual use and measurement.

The paper studies the relationship between axial force and breadth of back blade by numerical simulation and experiment. On the basis of the RNG k-ε turbulence model and technology of compact local grids and regional computing, three dimensional numerical simulations to 100HZ165-250 centrifugal pump with various breadths were carried out. Through comparing and analyzing of the flow field, it can be seen that the axial force reduces with the increase of the back blade breadth. After that, the simulation results were verified by the experimental data got from different test devices, and it shows that the conclusions are reliable.

A new type of balance drum with grooves was presented, and analyzed the influence of quantity of grooves on performance of centrifugal pump and balance force by the method of numerical simulation and experiment. The liquid flowing situation at the clearance and the differential pressure on both sides of the balance drum under different quantities of grooves were simulated. The efficiency, quantity of flow and axial force were measured by the experiments with different test devices. After comparing and analyzing the results of simulations and experiments, it indicate that with the increase of grooves the resistance in the clearance increase, the leakage losses reduce, the efficiency of pump enhance and the differential pressure between both sides of the balance drum increase, which contributes to balance the axial force.

In this paper, the method of balancing the axial force with balance hole is studied based on the combination of CFD and experimental research. The relationship between the radial position of balance hole and the effect of axial force and external characteristics of the pump is in-depth studied. Research shows that, there are certain laws for the effect of the balance hole location to the axial force and the external characteristics: the overall pressure of the balance chamber and the axial force decrease with the decrescence of the balance hole radial location, which could get good effect on balancing axial force. But the head and efficiency decreased.

In this paper the propagation properties of axisymmetric compression wave in an infinite and transversely isotropic magneto-electro-elastic cylinder are investigated. Numerical results show that mechanical boundary conditions have obvious and different influences on the propagation properties of axisymmetric compression wave in a magneto-electro-elastic cylinder.