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In this study, the magnetic UiO-66 composite was prepared and used as an adsorbent to effectively remove Rhodamine B (RhB) from water. The as-prepared magnetic MOFs composites not only retain the unique structure and properties of MOFs materials, but also can be quickly recovered and separated from aqueous solution by applying a magnetic field. The effects of contact time, initial concentration on the adsorption properties were studied. For RhB, pseudo-second-order model and Langmuir model could well explain the adsorption process of magnetic UiO-66 composite, indicating that the adsorption process of the RhB was mainly performed by chemisorption on uniform surface, and the maximum adsorption capacity is 188.68 mg/g. The possible mechanism for RhB was further proposed, revealing that electrostatic interactions, π-π stacking interactions mainly affected the adsorption process.

Supercritical hydrothermal synthesis is a green synthesis method for metal and metal oxide ultra-fine particles. Ultra-fine copper particles are of great interests for the researchers because of the excellent performance in recent years. In this paper, supercritical hydrothermal synthesis of copper ultra-fine particles with three different precursors (CuSO4, Cu(NO3)2, Cu(HCOO)2) are reported. This thesis reports that different products are produced with different precursors. Also, three kinds of reaction mechanisms with different precursors in supercritical water were explained. The conversion of copper ions in the reaction of Cu(HCOO)2 in supercritical water is the highest, the value reaches 100.0%. In the process of synthesizing ultra-fine copper particles, different additional HCOOH concentrations (0, 0.1 mol/L, 0.2 mol/L) and different reaction times (5 mins, 10 mins) were applied. Zero-valent ultra-fine copper particles without impurity were synthesized. The synthesized copper ultra-fine particles were cubic aggregations with micro-meter size

The present work shows the viability of a combined punch that makes possible to perform a hole punching followed by a hole burnishing in only one operation. The advantage of this combined punch is forming processes in only one process on medium thickness plate. In this work were tested two different configurations of punches which one of them is the conventional punch and another is a new structure of combined punch. The new structure of combined punch is added the step and inclined edge at the cutting edge on the basis of conventional punch. They are made of the same materials that are Cr12MoV. The new structure of combined punch and the conventional punch are studied by using numerical simulation and experimental research in this paper. During the materials forming process of hole punching, the simulation software ANSYS is used to simulate. The YZ32-100 Hydraulic press with nominal and the self-made die sets and the thick of 16mm Q235 sheet metal is selected in this experiment. The analysis of the obtained results showed that the hole surface quality of combined punch is superior to the conventional punch. It is prove that the new structure of combined punch can improve quality of punching.

Currently, there are lots of groundwater simulation softwares, but the GMS software is being more and more widely used , with friendly interface, powerful front and post-processing functions and good effect of 3 d visualization. In GMS software, on the basis of a brief introduction to the module of the software, presenting the advantages of the software and analyzing the prospects in the research field of mine water prevention and control of application.

We investigate the effects of polytetrafluoroethylene (PTFE) on organic photovoltaic (OPV) devices with structure of ITO/PTFE/PEDOT:PSS/P3HT:PCBM/PTFE/Al by inserting thermally evaporated PTFE films between indium-tin-oxide (ITO) and PEDOT:PSS layers, and also between P3HT:PCBM and Al, respectively. Significant improvement in terms of open-circuit voltage, Fill factor (FF), and thereby in its commensurate power conversion efficiency is achieved compared to devices with PEDOT:PSS and LiF buffer layers. The OPVs performance enhancement is attributed to the formation of an artificial dipole layer resulting from the rich, negatively charged fluorine that facilitates the charge extraction process.

In order to further strengthen the management of open laboratory in colleges and universities and improve the utilization rate of equipments, we design and develop a kind of laboratory management system based on embedded video and campus card. Among it, the video monitoring module combines with the embedded technology, image processing technology, internet communication technology and so on, which is used to achieve real-time display and remote video monitoring in the laboratory; campus card is used to implement the student identity authentication, laboratory access control and power supply management.

We investigate the effects of Au nanoparticles (Au NPs) on poly [N-9′′-hepta-decanyl-2,14-carbazole-alt-5,5-(4′,14′-di-2-thienyl-2′,1,3′-benzothiadiazole)]:ph-enyl-C61-butyric acid methyl ester (PCDTBT:PCBM) based organic photovoltaic (OPV) devices by thermal evaporating Au NPs onto polytetrafluoroethylene (PTFE) layer which is based on indium-tin-oxide (ITO) glass substrate.Significant improvement in terms of short-circuit current density (Jsc) by 33.6%, fill factor (FF) by 0.9%, and thereby commensurate power conversion efficiency (PCE) by 40.7% were achieved compared to devices without Au NPs. The OPVs performance enhancement is attributed to the formation of Au NPs-induced surface plasmons that increases the rate of exciton generation, and the probability of exciton dissociation.

The electronic structure and photoinduced surface/interface charge transfer processes have been studied in poly [2-methoxy-5-(28-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) thin films spin-coated on Au using Kelvin Probe Force Microscopy. The results show that the MEH-PPV film,dissolved at about 1% weight/volume in Chloroform (CHCl3), is a n-type semiconductor with an optical band gap of around 2.1 eV and a surface work function of 4.6 eV. MEH-PPV was also dissolved in chlorobenzene (CB) with the same concentration as the CHCl3 solution, is a p-type semiconductor with an optical band gap of around 2.1 eV and a surface work function of 4.75 eV, and its photovoltaic response is dominated by its free surface rather than the interface with the substrate.

Detection of moving object is a hot topic in computer vision. Traditionally, it is detected for every pixel in whole image by Gaussian mixture background model, which may waste more time and space. In order to improving the computational efficiency, an advanced Gaussian mixture model based on Region of Interest was proposed. Firstly, the solution finds out the most probably region where the target may turn up. And then Gaussian mixture background model is built in this area. Finally, morphological filter algorithm is used for improving integrity of the detected targets. Results show that the improved method could have a more perfect detection but no more time increasing than typical method.

Aiming at the characteristics of the UAV camera, camera data nowadays, a new improved method is proposed based on putting the low-resolution video reconstruction into high-resolution video. First, the low-resolution video frame is done spectrum analysis by Fourier transform. Second, find the maximum gradient descent point to determine the cut off frequency. Finally making use of high-resolution images with high frequency detail, then motion compensated. Through POCS algorithm, then iterated, obtaining super-resolution reconstruction video and realizing the above by MATLAB simulation.

The physical and mechanical properties and microstructure of Q2loess are of great theoretical and practical significance. Through studying these properties which Q2loess samples are taken in the Xi'an city of Lin-tong District of Mount Li, the results show that: (1)Natural water content, wet density, liquid and solid index, shear strength, collapsible coefficient compressive modulus; (2)By means of the scanning electron microscope to study the picture of the loess micro-structure, there are some preliminary understanding of micro-structure’s basic characteristics; (3)Using scanning electron microscopy techniques to observe the loess micro-structure, As the performance of the loess micro-structure’s basic unit-body and its arrangement form, the loess micro-structure is the reflection of its physical and mechanical properties, Meanwhile the change of physical and mechanical properties also show the unstability of the loess micro-structure.

For the UAV’s characteristics that is the date of camera shooting and photographing and digital map contain information, a UAV target location method is presented based on image matching. Firstly, using the artificial reconnaissance registration method that has improved, the UAV aerial images that consider digital map coordinates as the target are registered to obtain registration information. Then, the UAV video frame resolution containing the target is improved by improving the method of super-resolution reconstruction. Finally, making use of the Gaussian pyramid matching algorithm based on optical flow, the video frames are registered with the aerial to complete the target. By MATLAB and C++ simulation, achieving the above algorithm. The results proved that this method achieve the target location without the UAV position and attitude information, while improving the precision and speed of target location, that is an effective method for target location in the battlefield.

As the increasing equipment of high power and motor load put into coal mine enterprise, the quality of power supply is decreasing, such as low power factor and large voltage fluctuation, etc. After analyzing the theory and algorithm of reactive power compensation in details, studying a system based on STM32 thyristor switched capacitor (TSC) reactive power compensation control system, which includes compensation, control algorithms of nine zone diagram, controller hardware design and software design. The experimental results show that, this TSC system can realize a faster and more accurate measurement and switching, which have an obvious effect of compensation, and a safe and efficient automatic operation of the system.

Because the solar cell has more and more application, its quality testing is particularly important in the production, and a new LED solar cell testing system is presented. Based on the total design of the system, the hardware and software of the RS232 serial communication module is designed. This paper introduces two parts of the module which are the circuit of the serial communication and serial communication software programming; and describes the realization of serial communication between PC and MCU by using VB. The computer and MCU are connected by RS232. The result shows that the communication between PC and MCU and user interface are realized.

To improve the controllability and maneuverability, airship is usually designed as static instability. But the airship is vulnerable to sudden wind interference in its ascent, resulting in divergent pitching motion. A new aerodynamic shape was put forward which added a inflatable aerodynamic-lift wing at backward of the airship hull. With the method of Computational Fluid Dynamics (CFD), aerodynamic characteristics and longitudinal static stability of the conventional airship and new winged airship were comparative investigated. It can be concluded that the new winged airship was longitudinal stable whereas the conventional airship was instable. It can be applied for restraining the sudden wind interference for airship in ascent.

Theory of the safety ergonomics and reliability analysis was applied in this paper. Influences of port handling machinery and workers on the handling reliability were studied. For the general cargo handling process, mathematical model was put forward. According to the model, calculations were carried out to increase the working efficiency of the port handling machinery. At same time, combined with port investigation and factors affecting the operation of workers, measures were proposed to improve the safe and efficient production of the port.

High altitude airship (HAA) envelope material is vulnerable to be damaged and become failure with the long floating time in the space while withstanding severe and bad high space environment. HAA envelopee is composed of fabric laminated composite and the fabric yarn bundles are the main part to bear outer loads. Also the main bearing part is woven by Kevlar filaments and it is valid to analyze its mesomechanical properties as two-dimensional textile material. On the basis of yarn bundles mechanics, the paper considers the elastic and plastic deformation and collides among the bundles for its analysis. And the mesomechanic model is built to explore mechanisms on tearing propagation of pre-notched envelopee material samples. The results from the model computed by program language Matlab are compared with the test data for the same model. The comparative results are almost line with what the engineering requires.

Labour quota management is a basic work for enterprise management. It plays an important role for improving productivity and reducing costs. First, the production process of redried enterprise is in-depth analyzed. Second, the system dynamics model of labour quota is established and mathematical functions of variables and the selection of parameters in the model are thoroughly discussed. Third,computer software is used for simulation to define labour quota. Empirical studies show that using the model and parameters to define labour quota not only greatly enrich the quota theory, but also has a strong practical value.

The angular deformation and torsional deformation are investigated by FEM on open front press with nominal press force of 1600kN. The FEM mold of press is established by processing contact, constraints, and loads. The angular deformation of frame and torsional deformation of slide are analyzed based on the analyses of distribution of equivalent stress and deformation. The influence work force of open front press to angular deformation and torsional deformation are obtained.

Magnetic molecularly imprinted polymers (MMIPs) based on poly [2,2’-(p-oxidiphenylene)-5,5’-bibenzimidazole] (OPBI) composites were synthesized for the selective adsorption and detection of nonylphenol (NP) from water samples. During polymerization, Fe3O4@C was used as supporter and magnetic substance and OPBI not only was used as crosslinking agent but also functional monomer. Morphology of Fe3O4@C and MMIPs were investigated by scanning electron microscopy (SEM). The kinetics of adsorption followed the pseudo-first-order model. Selectivity of MMIPs was further demonstrated through HPLC analysis of the water samples, in which bisphenol A (BPA), phenol, 4-nitrophenol (4-NP) and tetrabromobisphenol (TBBPA) were dissolved respectively. The result showed that MMIPs had more effectively recognition capability of NP than other contrasts.

Magnetic chitosan microspheres were prepared with reversed-phase suspension methodology using glutaraldehyde as cross-linking reagent for sorption of PFOS. In this study, the SEM image of MCTS showed that it had well-shaped spherical form with smooth surface, and its mean particle size was 4.2 μm from the particle size analyzer. Additionally, the sorption kinetics followed the mechanism of the pseudo-second-order equation, and the magnetic chitosan microspheres had a high sorption amount of 865.95 mg g-1 for PFOS due to the electrostatic interaction.

With large number of participants, tight development time, high technical standards, there is great uncertainty and risk during doing researching on Unmanned Aerial Vehicle (UAV for short). This article makes a count on the accidents’ data of the past 30 years and analyses the causes of these accidents, thus creating the comprehensive risk evaluation index system of the research on UAV. Based on analytic hierarchy process, the paper builds comprehensive Risk Assessment model and discusses the Risk Response System during the research on UAV to guide specific practices of Risk Management of UAV project.

With the extensive development of ways of teaching, multi-media device has become more accessible on campus and its inconveniences of both management and maintenance are also manifested. On the basis of RFID (Radio Frequency Identification) technology, the passage proposes an achievable solution aimed at handling inconveniences with the management and maintenance, including a functional management pattern and a design of RFID system, which uses a two-way authentication and SMS4 encryption algorithm, and moreover, the system adopts CFB pattern to improve its adaptability.

Performing characteristics on envelope composite of near space airship (NSA) are quite different from that of the low altitude airship essentially. The NSA envelope material should meet excellent applicative characteristics including light weight, high strength, anti-aging, anti-ultraviolet radiation, gas-tightness, weather resistance. Ground simulation test is critical for the envelope design and development process of NSA, and the environmental features of near space is analyzed for NSA, then corresponding ground simulation test methods are proposed to involve mechanical strength of the ground test methods among the changing weather temperature and over pressure changes, materials weather resistance and air tightness test. Finally the coupling relationship between various mechanical test and environmental test methods is also investigated.

Voice activation detection is a very important part in speech related domain. The classic voice activation detection normally depends on feature parameters in time or frequency domain, or parameters from statistical model. An improved voice activation detection method based on energy acceleration parameters and support vector machine is proposed in this paper. The energy acceleration parameters are the voice activation detection parameters in ETSI Advanced front-end feature extraction algorithm. The training period of support vector machine is based on energy acceleration parameters and manually appended class labels of each frame. In the detection period, the detection result is derived from energy acceleration parameters and Lagrange parameters calculated from training period. The experimental result shows that the false alarm rate of proposed method is greatly decreased. It has been observed that the voice activation detection proposed is better than the voice activation detection in ETSI Advanced front-end feature extraction algorithm.

Poyang Lake is located in the northern part of Jiangxi Province, is one of the important Yangtze River flood storage lakes. Use Mann-Kendall test the trends and mutation of the Poyang Lake area rainfall time series, and use singular spectrum analysis (SSA) method to analyze the time series of periodic oscillation characteristics. The results showed that, the Poyang Lake area rainfall time series no significant upward or downward trend, there are quasi 4-5 years, 8-11 years, 20-year periodicity.

With the observation data of the whole year from November 2012 to October 2013 and results of numerical simulation, we do some research on the wind energy resources of Henan Province. Variation of wind energy resources is generally better in winter and spring, poor in summer and autumn. Diurnal variation of wind resources across different, but most good wind resource areas are located at higher elevations, and wind resource is generally better at daytime than night. Wind resources of Henan province is relatively limited, which can be technology developed are located in hills area and the mountain highlands of northern, central, western and southern part. Better resources are mainly located on hilltop and ridge.

Crack-free monolithic mesoporous carbon with worm-like structure has been synthesized by low-temperature autoclaving that use triblock copolymer F127 or P123 as composite template, and resorcinol-formaldehyde resol as carbon precursor. The effects of the composite template ratio on the structure of mesoporous carbon were studied by transmission electron microscopy, nitrogen adsorption measurements and element analysis. The results indicated that mesoporous carbon are worm-like structure when use F127/P123 as composite template. Compared mesoporous carbon synthesized by a single template, the pore size distribution of the mesoporous carbon synthesized by the composite template are directly affected by the molar ratio of P123 in the composite templates, however, the pore size is significantly enlarged when using F127/P123 as template. The pore size of mesoporous carbon increased to 12.0nm when the molar ratio of P123 in the composite templates is 67%. We achieved adjustable pore diameter by use F127/P123 changing the molar ratio of P123 in the composite templates.

Silicon is applied widely because of its good electrical properties, thermal conductivity and optical processing. It is necessary to fabricate a heat sink on silicon substrate to improve the heat dissipation ability for modern industrial application. There are many traditional methods of processing heat sink on silicon substrate. However, it is hardly to meet the requirements of today’s technology for the disadvantages such as residual stress exist, processing shape limited and inefficiency. The investigation on fabricating heat sink silicon substrate by direct later sintering was conducted in this study. By sintering a transition layer, coppery heat sink with channel width of several hundred micrometers and circinate shape has been fabricated by direct laser sintering. Furthermore, the bonding mechanism and the influence of the powder components on the interface morphology and structure have been investigated.

In this paper, for Super304H steel, the growth law of oxide films and the heat transfer characteristics between the pipe and the working fluid were investigated by using numerical software ANSYS, which simulated comprehensively the effects of pipe size, flow rates of steam, flue gas temperature, and steam temperature on the formation and thickness of the oxide film. A bigger pipe wall thickness, a smaller steam flow rate or a higher flue gas temperature will lead the faster growth of the oxide film thickness, the heat flux density through the wall being smaller and the wall temperature being higher. With increases in steam temperature and thickness of the oxide film, the heat flux through the wall decreases with a small amplitude, and the average temperature of tube walls increases slightly.

At present, the superheater and reheater pipes in supercritical and ultra-supercritical boilers have encountered with widespread problems of high temperature steam oxidation, seriously affecting the operation safety and economy of the power generation unit. After several tests and contrastive analysis on the main chemical composition and microstructure of specimens before and after shot peening treatment, this paper developed a set of detailed surface shot peening process with specific process parameters, and finds that for the Super304H oxide film, the relative content of Cr element increases by shot peening treatment, with the relative Cr content of the treated specimen being 2.65% higher than that of the untreated, displaying that the anti-oxidation properties of high chromium austenitic steels in high temperature steam is effectively increased.

The performance of asphalt concrete is strongly dependent on the rheological properties of asphalt binders. In this paper, PAN carbon fiber was employed to improve the conductivity of asphalt mixture. To better understand the performance of conductive asphalt mixture, the present study investigated the rheological characteristics of asphalt binders containing PAN carbon fiber. Additionally, scanning electron microscopy (SEM) was used to elucidate the microstructure and interface reaction between the asphalt and the PAN carbon fiber. Experimental results showed that carbon fibers in the asphalt can overlap each other and form a three-dimensional space structure, which could transfer and buffer the stress. Moreover, the addition of PAN carbon fiber increases the complex shear modulus of modified asphalt binders, which means higher resistance to the permanent deformation. Furthermore, the reduction of phase angle implied the increment of elastic portion in the visco-elastic of carbon modified asphalt binder.

Three dimensional (3D) models provide insights into the distribution, external and internal geometry of the reservoirs. The core description shows that the fourth segment of Funing Formation (E1f4), Oubei Block, Jinhu Depression mainly develop delta front subfacies which included underwater distributary channel, mouth bar, sand sheet and so on. Well data and structural maps were integrated to build 3D structure model and sedimentary microfacies model of Oubei reservoirs using stochastic simulations with geometry data. The result of facies-controlled property model can reasonably reflect reservoir characteristics in detail, providing a reliable geological model for late reservoir adjustment and valuable reference for numerical reservoir simulation as well.

The solubility of Na2SO4 mixed with K2SO4 and K3PO4 were investigated by a continuous kettle-reactor system at temperature within the range of 320°C to 420°C, 24MPa. The solubility of Na2SO4 showed a drastic reduce at a temperature of about 360°C. Ionic chromatography was used to determine the concentration of Na2SO4 in effluent. Among 355°C to 380°C, the presence of K2SO4 reduced the solubility of Na2SO4, due to common-ion effect. The addition of K3PO4 could inhibit the salts deposition in the supercritical water system, effectively. The variation degree is more remarkable as the addition of K2SO4 and K3PO4 increased.

Three types of rejuvenator sealer materials were added into asphalt mortar after thin-film oven test (TFOT) and pressure aging vessel (PAV) aging processes. The performances of both aged mortar and rejuvenator treated mortar were evaluated by means of softening point, temperature sweep tests. Experimental results showed that all of rejuvenator sealer materials can significantly increase phase angle and decrease the softening point and complex modulus of TFOT aged asphalt, which means aged asphalt can be efficiently softened with the rejuvenator materials. However, the influence on PAV aged asphalt was slightly in the same concentration, which has a significantly direction for the pavement preservation.

This paper proposes an approach to carry out sensitivity analysis of tool axis errors caused by component geometric errors, in order to meet the high precision requirement in holes series machining with mill-turn machine tools. Firstly, ideal kinematic model and real kinematic model considering geometric errors of the mill-turn machine tools are built respectively based on homogeneous transfer matrix and multi-body system theory. Secondly, tool axis errors caused by component geometric errors are simulated using an orthogonal test. Finally, sensitivity analysis of tool axis errors is implemented by means of range analysis and variance analysis.

Molecular imprinting has been considered as one of the most useful techniques for the preparation of specific receptors. In this study, a novel molecularly imprinted material (MIP) has been developed by combining PFOS as the template with soluble polybenzimidazole which wrapped over the surface of ferroferric oxide as the carrier. Kinetics experimental showed MIP had a sorption amount of 117.6mg/g for PFOS, high than 74.6mg/g of the none-imprinted polymer adsorbents（NIP）. Additionally, in the competitive environment with other pollutants, the sorption amount of PFOS for MIP is greater than NIP, due to the electrostatic interaction in recognizing the target compound.

An unsymmetrical photochromic diarylethene which called 1-[(2-methyl-5-dioxolane)-3-thienyl]-2-[(2-methyl)-5-(4-methoxyphenyl)-3-thienyperfluorocyclo-pentene was synthesized and its photochromic properties were examined in detail. The result demonstrate that the diarylethene changed the color from colorless to blue violt upon irradiation with 297 nm UV light, in which absorption maxima were observed at 552 nm and 563 nm in hexane and PMMA films, respectively. This photochromic compound also exhibited remarkable fluorescence switching both in hexane solution and in PMMA films.

With the development of estate and decoration industry, decorative paper become more and more popular, people's needs and requirements are also increasing. However, compared with imported decorative base paper, domestic decorative base paper have a lot of quality problems. In order to improve the performance of domestic decorative paper, surface sizing was used to improve the printing performance and final product quality of domestic decorative base paper in this study. Starch and styrene-acrylic emulsion (SAE) were used as the surface sizing agents for the surface treatment of decorative base paper by the German SUMET coating machine in this paper. Under the conditions of sizing roll pressure of 250N, sizing speed 9m/min, drying temperature and time of 100°C and 70s respective, the effects of metering roller type (No.40 and No.30) and different ratios of starch and SAE ratio (10:1, 15:1, 20:1, 25:1 and 30:1) on the decorative base paper printing performance were investigated in this paper. The optimal sizing conditions and formulation for decorative base paper were as follows: roll pressure 250N, sizing speed 9m/min, drying temperature and time of 100°C and 70s respective, No.30 metering roll, the ration of starch and SAE 20:1. Under this conditions, printing runnability of decorative base paper such as the tensile strength, smoothness were increase greatly and the pH value reached the national standard, the printability such as the color density, tone reproduction range were improved.

Ni-P ultra-black films were prepared by ultrasonic chemical etching of electroless plated Ni-P films using 8 mol/L nitric acid at 40 °C for 20 s with different ultrasonic power ranging from 0 to 195 W. Scanning electron microscopy (SEM) was used to study topographic characteristics of the films. The results show that ultrasonic oscillation plays an important role during ultrasonic chemical etching of electroless plated Ni-P films. The enhanced pore features with higher porosity through coalescence of adjacent isolated pores have been observed at 0-105 W. The increase in pore size of Ni-P etched films with the ultrasonic power (from 105 to 195 W) has been confirmed by SEM characterization. Generally, the dependences of relative etching rate on ultrasonic power are closely associated with pore size, pore shape and the distribution of etching pores.

A new unsymmetrical photochromic diarylethene compound 1-[(2-methyl-5-(2-pyridyl)-3-thienyl)]-2-{2-methyl-5-[2-(1,3-dioxolane)]-3-thienyl} perfluorocyclopentene1Owas synthesized. The optoelectronic properties, including photochromism, fluorescences switch and optical recording were investigated in both solution and a PMMA amorphous film. This compound exhibited good photochromism, changing from colorless to purple after irradiation with 297 nm UV light. The new diarylethene also showed remarkable fluorescence switches by photoirradiation in hexane solution. Finally, photo-mode rewritable optical storage using1Cwas carried out successfully.

A new photochromic diarylethene compound 1-[(2-methyl-5-(4-trifluoromethyphenyl)-3-thienyl)]-2-{2-methyl-5-[2-(1,3-dioxolane)]-3-thienyl} perfluorocyclopentene 1O was synthesized. Its optoelectronic properties, such as photochromism in solution as well as in poly-methylmethacrylate (PMMA) amorphous films, fluorescences switch were investigated in detail. Upon irradiated UV light it changes from colorless to purple in solution and PMMA amorphous film, respectively. Finally, the diarylethene 1O was exhibited remarkable fluorescence switch properties along with the cyclization reactions. When the concentration arrived at 1 × 10-5 mol L-1, the fluorescence peak had the maximum.

In this paper, a series of polyimide (PI) films with different monomer mole ratios between PMDA and ODA (0.980: 1, 0.990: 1, 1.000: 1, 1.010: 1 and 1.015: 1) were prepared in order to investigate the effect of molecular weight on optical properties. Inherent viscosity values were taken as a measure of the molecular weight. The fluorescence properties of the PI films have been measured. The fluorescence spectra show that three obvious emission peaks can be observed at 583 nm (1.00 dL/g), 594 nm (1.42 dL/g) and 603 nm (1.57 dL/g) respectively. In addition, emission peaks show red-shift with the increase of molecular weight, which can attribute to the decease of orbital energy caused by conjugated effect.

This study is directed at the shoulder, back and breast of female to sum up its parts variation law and set up the relationship between figure variable of these three parts and pattern graphic, and thus complete the basic study of human figure characteristics corresponding to the digitalized prototype pattern of female coat. It is a basic study for female coat prototype pattern automatic design system of special figure, which sets up the relevant relationship between female figure characteristics and coat prototype structural feature and to guarantee the consistency of figure and pattern design in the process of garment PCAD system pattern intelligent design. It provides the possibility for the study of intelligent female coat pattern design system based on the figure and has a positive effect on changing the traditional pattern design concept and means.

In view of that detent force (DF) spatial harmonic has great influence on thrust ripple of permanent magnet synchronous linear motor (PMSLM), a harmonic suppression method is proposed. DF of the PMSLM model is calculated by finite element method (FEM) and its harmonic spectrum is achieved by Fourier transform (FT). Also total harmonic distortion (THD) is introduced to quantificat spatial harmonic. The effects of air gap, permanent magnet (PM) size, primary size, secondary size and pole-arc coefficient upon DF are analyzed. In order to minimize THD, orthogonal optimization design is adopted to optimize PMSLM structural parameters. A double-secondary PMSLM is chosen as the subject of research in the paper. Based on quantitative calculation, orthogonal experiment and range analysis are used to obtain optimal structures. This paper provides an effective quantitative analysis method for PMSLM spatial harmonic suppression.

A functional potassium sodium niobate/polyimide (KNN/PI) composite films were prepared in this paper. KNN fillers are well dispersed in the PI matrix without any accumulation through in situ polymerization process. The optical band baps of the hybrid films become smaller with the increase of KNN loading. The optical band baps of the films with 0-20 wt% KNN filler are estimated to be 2.61 eV, 2.57 eV, 2.52 eV, 4.29 eV, 2.35 eV respectively.

A novel photochromic diarylethene 1-{[2-methyl-5-formyl-3-thieny}-2-[2-methyl-5-(2-cyanophenyl)-3-thienyperfluorocyclopentene (1o) has been synthesized for the examination of its properties including photochromism, fluorescence properties and optical recording. The concentration effect in hexane solution was investigated also. The result indicated that the diarylethene 1o changed the color from colorless to royalblue upon irradiation with 297 nm UV light, in which absorption maxima were observed at 592 and 603 nm in hexane and PMMA film, respectively. The colorless open form with fluorescence character could be regenerated by irradiation with visible light. In hexane solution, when the concentration at 2 × 10-5 mol/L the fluorescence peak have the maximum. The cyano group and its substituted position can availably modulate the optical and electrochemical behaviours of these diarylethene derivatives. In addition, polarization optical recording using this diarylethene as recording medium was performed successfully.

A new photochromic diarylethene compound [1-(2-methyl-5-phenyl-3-thienyl)-2-(2-methyl-5-1,3-dioxolane-3-thienyl)] perfluorocyclopentene 1o was synthesized and its photochromic properties and fluorescence switch were investigated in detail. Upon irradiated UV light it changes from colorless to purple in solution and PMMA amorphous film, respectively. Finally, the diarylethene 1o was exhibited remarkable fluorescence switch properties along with the cyclization reactions. When the concentration arrived at 5 × 10-5 mol L-1, the fluorescence peak had the maximum.

A novel polyimide (PI) films with three kinds of monomers was synthesized in this paper. The polyimide unit is derived from Pyromellitic dianhydride (PMDA), 3,3',4,4'-benzophenonetetracarboxylic dianhydride, (BTDA), and 4,4, -diaminodiphenyl ether (ODA). The dielectric properties of the films were measured. The dielectric spectra show that dielectric constant is about 3.7, which is larger than the PI with two kinds of monomers. In addition, the loss tangent and conductivity of the films is quite small, which is important for the practical use of them.