Quick sizing system composed by creel mechanism sizing mechanism drying mechanism winding mechanism and temperature-controlling mechanism. the four notes are put forward. Using this quick sizing system for JC20S, the yarns are tested before and after sizing. The results show that: after sizing, breaking...

This paper designs a intelligent car horn based on RFID(radio frequency identification and satellite navigation technology) Horn gets automobile accurate geographic position information by satellite navigation chip and realize the communication between the cars by the RF module.When the other car’s whistle...

In this paper, the time domain collocation method (TDC) is applied to solve the van der Pol equation. The results obtained by the TDC are compared with the results by the traditional harmonic balance method (HB) and high dimensional harmonic balance method (HDHB). For the extended TDC method, appropriately...

The main research content of this paper is to take fabric images with different texture features, by three kinds of commonly used and relatively good performance of the clarity evaluation function process the image, such as gray scale gradient function, energy gradient function (Tenengrad function) and...

By using the characteristic of tows and the core module surface, also including the demand of fiber placement, a family of wraps as fiber placement reference curves are presented based on equidistant calculation. A new algorithm for fiber placement of open contoured sculptured surface is proposed. Combined...

This study explores the physical and mechanical properties of concrete with circulated fluidized bed combustion (CFBC) fly ash, ground granulated blast furnace slag (GGBFS) and coal fly ash. Five different blended cements were prepared to cast concrete specimens and the slump, unit weight (density),...

A large number of cracks were found in the gear box of high speed train in practical applications. According to the line test, the weak position was got and the reason of cracks was researched. The influence of the different vibration source on the weak part was studied by means of vibration spectrum...

NFC is a short-range communication of non-contact, combining NFC and smart phone in the field of mobile payments has broad application prospects. Unity3D is the most convenient and reliable software to realize cross-platform application transplant in the current field of game development. Unity3D-based...

Faced with the fierce market competition, automotive parts enterprises should make a quick and accurate cost estimation of automotive parts so as to provide basis for decision making. It discusses the importance of quick and accurate cost estimation of automotive parts, and analyses the method of estimation...

10kv distribution networks of power energy assigned to users play part in an important role, generally conventional 10kv line one permanent fault will cause the whole route broke down. And we find the fault point is wasted time and energy . Recently, it’s possible that run intelligent high voltage electric...

The design of good performance and long service life, crankshaft affects the engine performance and fuel economy. It can reduce the consumption of materials and manufacturing cost. Thermodynamic calculation of mixed gas cylinder is analysised based on P-V diagram drawing, It compared with theory and...

In order to ensure the security and stability operation of microgrid, this paper construct simulation models of renewable energy generation grid, propose the control strategy of the grid-connected and microgrid operation, and analyze these control strategy based on Power Systems Computer Aided Design....

The establishment of stable and reliable island microgrid with renewable energy resources is an important measure to guarantee the island economic development. The scheme and strategy is used to achieve information communication and interactive control. The energy storage unit and diesel generator can...

The six kinds of polyimides(PIs) containing fluorene units were prepared from 9,9 -bis(4-aminophenyl)fluorene(BAF) with various dianhydrides including 2,2 -bis-(3,4-dicarboxyphenyl)hexafluoropropane dianhydride(6FDA), 3,3',4,4'-biphenyltetracarboxylic dianhydride(BPDA), 4,4'-oxydiphthalic anhydride(ODPA),...

The present study investigates the role of 24-epibrassinolide (EBL) in inducing plant tolerance to salinity. Seedlings of watermelon (Citrullus lanatus L.) were grown in the presence of 70 mM NaCl and were sprayed with 10-6 M EBL at 7 days after transplantation and were sampled at 28 day. The plants...

In this paper, through the placement phase positioning equipment short-range observation station, the measured data of the geometric relationship of low precision ranging applications into the rear observation station, the current post observation station and the distance between the rear observation...

The performance of Photoelectricity Trackers is usually required to be tested in the process of developing or repairing. A simple revolving photo-electricity target is realized based on a collimator, and it can be used to test the Photoelectricity Trackers’ performance. The photo-electricity target is...

Shape memory alloy is a new type of metal functional materials developed in recent decades. Because of its unique shape memory effect and super elasticity, etc., in many areas have a good application. In this paper, the basic properties of shape memory alloy and the application of shape memory alloy...

Sustainable development puts forward new requirements on building technology, improve the level of housing industrialization and modernization is the important way to realize the green building, green construction. This article from the assembled structure of production assembly to the assembled structure...

Polymers of intrinsic microporosity (PIMs) possess rigid and highly non-linear molecular structures. The contortion site of PIM-1 is provided by the monomer 5,5 ,6,6 -tetrahydroxy-3,3,3 ,3 -tetramethyl-1,1 -spirobisindane (TTSBI). The paper described the effect of synthetic conditions including catalyst...

Y2O3- doped Al2O3 transparent ceramics have been successfully fabricated by microwave sintering at the lowest temperature. Compared to vacuum sintering processing, the microwave sintering needs a lower sintering temperature and shorter dwelling time to get highly dense Y2O3- doped Al2O3 transparent ceramics...

This paper regards a kind of AZ80 magnesium alloy extrusion die as the research object to design its shape and make the systematic optimization. The results show that after optimization, the simulated extruding warpage reduced with stable dimension. By comparing the loads of dummy blocks under different...

This paper studies the effect of pre-stretching process on the residual stress and mechanical properties of EW75 magnesium alloy by OM and mechanical tests, etc. The results show that the bend deformation caused by the release of quench residual stress increases after machining into the pre-stretching...

Using platelet derived growth factor B chain (PDGF-BB) as the model analyte, a structure-switching hairpin probe based electrochemical biosensing strategy for highly sensitive detection of protein is proposed in this work. Aptamer probe hybridized with the immobilized hairpin structured signal probe...

Being widely used in modern machinery and equipment, gears drive functions in transmitting motion and power at a specified gear ratio. Based on the general application of NC machining technology, it is increasingly important to realize the automatic production from the gear blanks to the finished gears...

In 21st century, with the urban population increasing, conurbation is getting more and more crowed,traffic jam happens everywhere. In this case, utilization of the underground space has become an effective way to undertake this set of problems. Subway, a kind of urban underground transport, it is convenient,...

In recent years, the construction project quality evaluation system is becoming more and more important . Therefore, to establish a complete and comprehensive quality evaluation system can guarantee the quality of construction projects, it can also promote the development of our country's construction...

The forefront of photonic crystal theory is applied in this paper to solve such technical difficulties as low color purity, unsatisfactory effect of deep treatment that are commonly seen in photodynamic therapy instruments. By using the transfer matrix method, band gap property of photonic crystals is...

On the basis of an established product assembly sequence, Assembly path planning is used to find a track for the part moving from the storage position to the assembly location. On one hand , Path planning can meet the needs of operation and avoid the obstacles, at the same time regarding security as...

Assembly process model illuminating product assembly is the base of assembly simulation and assembly assessment, and assembly process model based ordinal assembly task link can not describe hierarchical structure and parallelism of assembly task. The development actuality of assembly process modelling...

Due to the complexity of structure and control on machining center, its reliability is usually difficult to ensure. In this paper, taking NBP1100 machining center spindle for example, the reliability virtual prototype model was built and the effects of thermal characteristics on reliability were analyzed....

Considering the parameter uncertainties, model inaccuracies and external disturbances in the servo-system, it is difficult to achieve an ideal performance of the conventional sliding mode controller (SMC), so we designed a robust adaptive global sliding mode controller (RA-GSMC) by constructing a global...

In recent years, with the rapid development of 3D printing industry, some 3D printing bases (including parks, centers, etc.) have emerged quickly. In order to assist various subjects to choose reasonable 3D printing base type for construction and development, this paper designed a development selection...

We make a dynamic contact analysis for a pair of gears in the first stage device of the RV reducer by the 3 d modeling software Pro/E and the finite element analysis software Abaqus. The simulation results are the dynamic changes of the stress distribution on the tooth and the results are compared with...

It will seriously affect the safety of tunnel structure if tunnel occurs longitudinal deformation. This paper is based on the shield-driven tunnel, discusses the factors may cause longitudinal deformation of metro tunnel and carries on the concrete analysis during construction period to operation period...

This paper researches the stability problem of structures of embedded ZnO nanodevices and properties under the environment of human serum albumin. The study simulaties human environment by putting the ZnO nanodevices into human serum albumin, imitates the human body environment of 37 , and researches...

To realize the automation of plugging bolt holes for automobile hub before the spraying process, this paper builds an automatic plugging bolt holes system, which is based on industrial robot and integrates the visual positioning technology and linear tracking technology. And then the overall system solution...

How to improve the efficiency of guiding disassembly sequence is the main research contents of augmented reality maintenance. To furnish the disassembly sequence to the system efficiently, assembly disassembly hybrid hierarchical graph model is established based on interference matrix between the assembly...

Theories of Human Engineering (HE) are closely linked with design. It is also the guidance and evaluation of the process of design practice. Based on the characteristics of HE, this article aims to explore how to combine human engineering with design practice so as to stimulate students’ interests within...

This paper focused on the question of optimizing process capability under the Beta distribution. First of all, analyze process capability index under Beta distribution, and analyzing the features of process capability index. Then, to decide the effect of process capability, Methodologically, this paper...

This paper designs the straw collecting box of the corn harvester, which is used to recover the corn straw. In the process of harvesting the corn harvester, the device can be able to complete the task of straw collection, which can effectively reduce the labor intensity of the straw recycling, improve...

With the rapid development of information technology, the popular online shopping came into being, which have lead to a huge number of online shopping packaging waste, and become an important source of environmental pollution in the world. In this paper, the present situation and main problems of online...

The paper obtains the equivalent stress of the two kinds of flexsplines after inserted into the wave generator according to the principle of harmonic gear reducer and using finite element method got different flexspline models with different length and length of the gear tooth to study how these factors...

The rheological properties of Polyphosphoric acid (PPA) modified asphalt binder were investigated by the dynamic shear test, and the composition change of modified asphalt was use to analyze the improvement mechanism of rheological characteristics. Test results indicated that the complex shear modulus...

The thermostability of Cu(II)-1,10-phenanthroline complexes was studied by the thermogravimetric analysis, and their catalytic properties were evaluated in oxidative carbonylation of methanol to dimethyl carbonate. It was found that the copper coordination environments and the thermostability of the...

This paper presents the intrinsic fluorescence spectra characteristics of tryptophan, tyrosine and phenyloalanine measured with 3D fluorescence spectrophotometer. Two strong fluorescence peaks of tryptophan locate at ex/ em=230/348nm and 280/348nm, three strong fluorescence peaks of tyrosine locate at...

The effect of uncertainty and its evolution with time on the system reliability design are investigated in this paper. The system design variables are modeled in Geometric Brownian Motions which using the drift rate and diffusion rate to describe the evolution-based uncertainty of variables. Based on...

This paper defined the material archives information management by analyzing the bill of the large-scale custom-built ambry material. This paper built the information management platform of large-scale custom-built ambry material technology archives preliminarily, including product mix, material sorting,...

A new kind of elevating mechanism for hybrid forklift has been designed. The 3D modeling for the upright mounting is using CATIA 3D software. And then, the elevating mechanism for hybrid forklift was simulated by the finite element analysis software ANSYS. Under different working conditions, such as...

Based on joint parameter and robot configuration, the Lagrange and Kane dynamics modeling are established for the 4-DOF modular industrial robot in this paper. The planning mission was performed in the Lagrange dynamics modeling and Kane dynamics modeling by simulation software. The simulation results...

Large amounts of organic solvents and pure water have been consumed in conventional semiconductor cleaning technology. And low dielectric constant (Low-K) material may be destroyed easily during the cleaning process, which will also cause structural collapse of the material. All these shortcomings can...

The research actuality and development of parallel manipulators are talked over in this paper. A parallel robot driven by double sliders linear motor has been presented. The kinematics and singularities of the 2 degrees of freedom (DoFs) parallel mechanism of the robot are analyzed. On the basis of that,...

It analyzes research on emotional design of ceramic packaging. It is based on Donalod Norman's emotional design , to analyze the positioning of ceramic packaging design. Through the analysis of the consumers’ motive of self-consume, duty and selfish motives, it associated analyses three ceramic packaging...

Based on the analysis of structure composition, material properties, operating conditions of bleed air system, a finite element model is developed and the natural frequencies and vibration modes are obtained by NASTRAN. The results show that the first ten natural frequencies comparatively dense, each...

A mass of ultrafine weakly magnetic iron minerals are produced during the processing of iron ores such as hematite and limonite, and in the most cases these fine minerals are recovered at a very low efficiency, especially for the magnetic particles below 20 m. Pulsating high gradient magnetic separation...

Now human beings are facing three major issues: resources, environment and population. Environmental problems are closely related to resources and issues of resources are the main reason of environmental problems. With the deterioration of environmental problem, people attach more importance to the study...

In this contribution, a sensitive fluorescent aptasensing strategy for the detection of adenosine is proposed based on structure switching of gold nanoparticle modified molecular beacon. Hairpin structured molecular beacon exhibits low background fluorescence since the fluorophore and nanoparticle quencher...

SPWM and SVPWM modulation methods are established based on the dual Fourier integral theory and the SPWM and THD modulation algorithms are compared. The results show that the SVPWM modulation algorithm can make the current frequency converter have more excellent output characteristics, which provides...

By selectively oxidating the cotton, part of the alcoholic hydroxyl group is oxidized to an aldehyde group, then use cross-linking agents or glutaraldehyde to make it react with the amino on collagen protein to produce imide, thereby allow the collagen firmly bind with cotton fabirc to obtain cotton...

Acetate fiber has many advantages, such as soft silk feel, after dyed bright color, beautiful, weather resistant, good drapability etc. In recent years, acetate fiber has become one of the man-made fiber industry developed rapidly. The deeply researches on the preparation of modified acetate fiber and...

Aiming at the frame strength of the load isolated pure electric vehicle (LIPEV) which is modified by a micro truck, the three-dimensional model of the frame was established based on UG. The finite element analysis model of the frame was established based on ANSYS. The load before modified and the load...

This paper applies the SC model and SVJD model to artificially generated data, and we put forward a forecast model that hybridizes genetic algorithm, principal component analysis and artificial neural network methods. This article utilizing genetic algorithm to search for the initial weights of the BP...

In the traditional product design method, the design method simply based on the knowledge and experience has hindered the efficiency of the product design, and it brings inconvenience to predict the tendency of the product shape. To solve this problem, a shape generation method is proposed, based on...

A nonlinear model of a liquid level process is obtained on the analysis of its nonlinear characteristics, finding the basis of its nonlinear process parameter correction and a nonlinear system control strategy based on single chip computer is presented. By measuring the liquid level and flow rate, two...

This paper study the process and characteristics of the bridge structure steelQ420qE fatigue crack prefabricated. The results provide an experimental base and computing foundations for the bridge This paper studies the Crack tip opening displacement fatigue precracking experiment on steel Q420qE. The...

This paper has proposed a basic modeling in studying the driving system of the shoe-cover machine, built the multi rigid-body dynamical model and motion equations of this system, and proved the effectiveness and feasibility of R-W method to the special machine. Through ADAMS software, the dynamic simulation...

Under the different axial compression ratios,testing the two intermediate nodes low cycle loading of the all-lightweight aggregate concrete frame beam-column node.Research the aseismatic performance of all-lightweight aggregate concrete frame beam-column node.Analyse the rebar strains of beam-end and...

The key techniques of visual monitoring contain searching and measuring multiple targets in large region. However, many intelligent monitoring systems today cannot satisfy these requirements simultaneously. By analyzing the features of creatural vision in predator-prey relation, the relationships among...

This paper presents a method for large deformation analysis for flexure hinged displacement amplifier by minimum potential energy. The flexure hinged displacement amplifier is widely used in micro electromechanical system, micro manipulation, gyroscopes. Different from conventional hinge, monolithic...

Aim to demand for automobile covering parts of measurement, this paper puts forward a new kind of optical inspection method, which combines photography with dense point scanning measurement. In order to meet the requirement of measuring the covering parts of automobiles, this paper proposes a new kind...

Considering a linear or exponential trend in unit production cost under a foreseeable time horizon, this study discusses the economic production quantity (EPQ) with shortages problem for a production system. A genetic algorithm (GA) with the chromosome of real number type to solve this problem is presented....

Red-emitting Europium( ) doped SrAl2B2O7 phosphors have been prepared by precipitation method, and its luminescent properties under UV excitation have been investigated. The phosphors are characterized by x–ray diffraction (XRD) and photoluminescence spectra. The SrAl2B2O7:Eu3+ phosphors can be obtained...

This paper introduces the load isolation type pure electric driving (LIPED) system, and according to the performance requirements of the vehicle. Based on the NEDC cycle, the energy consumption and the maximum demand of a light truck are calculated, and the parameters matching of power battery is carried...

HfSiN thin films were prepared by the solid solution of HfN and SiN precursor films through magnetron sputtering. The obtained films were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). X-ray diffraction(XRD) measurements show that the films have amorphous structure...

The microstructure of as cast Mg-RE (Mg-Gd, Mg-Y, Mg-Gd-Y and Mg-Gd-Y-Nd) alloys and that after heat treatment were investigated. The results show that the primary solidified precipitated phases of both Mg-Gd and Mg-Y binary alloy were coarse aberration eutectic microstructure pattern. For Mg-Gd-Y ternary...

This paper proposes a predictable method for mechanical performance of cold rolled ribbed steel bars based on BP network with dividing variable space according to original materials’ tensile strength. It builds a sample variable space partitioning model according to the original materials’ tensile strength....

Effect of Be addition on age hardening and precipitation behaviors of Al11Si3Cu alloy was investigated by hardness measurement and differential scanning calorimetry (DSC) analysis. The age hardening results show that 0.25% Be addition increases the peak hardness of Al11Si3Cu alloy about 20HV. DSC results...

According to characteristic of Lost Foam Casting (LFC) processes and considering the metal flow pattern decomposition gas pressure impediment, interface elapse model is established base on gap pressure as boundary of front of melt flow. Corresponding numerical solution method is applied to simulate filling...

40Cr steel diesel engine connecting rod were quenching and tempering by waste hate after forging and its mechanical properties were studied. The results showed that comparing with traditional technology, the forging-remnant-heat quenching and tempering technology route for 40Cr connecting rod of diesel...

This paper proposes a design of VVOIP (Video and Voice over IP) on smart devices, with ARM Cortex A8 CPU structure in hardware, Android OS and JAVA language in software and C in Native layer. In the VVOIP, SIP is adopted as session protocol, and RTP packages carry H264 video streamer and GSM audio streamer.

We’ve designed a photoelectric sensor to detect the concentration of SO42- solution with a vertical capsule which was immersed into sample solution derectly. The system contains a pair of light-emitting diode (LED) and photosensitive diode (PIN) packaged with cover of semi-sphere shape. Theoretical analysis...

In order to improve the low reuse rate of code and the low development efficiency, the paper takes use of the Common Component Architecture standards, builds a architecture admitting the clients access. The paper analyzes the importance of component technologies, introduces the composition structure...

The gap of the friction pair interface is tiny for the heat pump mechanical seal, the dynamic characteristics of the fluid-film couldn’t be come true easily when using the traditional experimental test. In this paper, the 3D FEM model of the fluid-film is set up, and then the dynamic characteristics...

focuse on the background of traditinal chinese culture, judging footwear on the basis of generally explorethe two embroidered pattern footwear decorated with aesthetic art functions and features from which to explore of chinese traditional aesthetic and psychological thought.We based on the local culture...

Environmental worthiness is one of the most important and basic performance of CNC system. This paper analyzes the environmental worthiness technology system of CNC system firstly. Following, an improved scheme on environmental worthiness technology system of CNC system is put forward. It is significance...

HVDC XLPE cables were widely used in the transmission line for the excellent characteristics. The thermal aging properties of HVDC XLPE insulation were investigated in this work, based on different assessment techniques, such as IR Prestige-21 Infrared Spectrometer, Thermo-Gravimetric Analyzer, and X-Ray...

Geomagnetic variation is divided into quiet period and active period, while active period is non-periodic and random. This paper utilizes analyze the magnetic variation field signals in active period in time-frequency domain, then models and forecasts the signals by using Artificial Neural Networks....

In recent years, the power grid and its load structure has undergone great changes. Especially the interference of a large number of non-linear and impact loads have caused voltage waveform distortion, voltage fluctuations, and a series of power quality problems. Therefore, extensive attention has been...

Through the research of the main parameters, performance and advantages of shield mule,and the application process of working face equipment moving process of the ultra thick seam with full thick low caving coal mining technology in Tongxin mine,solved that has been existed since as the retreat time...

Based on the finite element analysis software ANSYS Workbench, studied the fluid-solid coupling numerical simulation of the pipeline centrifugal compressor impeller with the unstructured grid finite volume method and finite element method. The equivalent stress distribution of the impeller, which caused...

For the disadvantages of discovery mechanism of current networked manufacturing resources based on Semantic Web Service, a joint discovery mechanism based on UDDI (Universal Description, Discovery and Integration) and WSIL (Web Services Inspection Language) was put forward. Basic process features are...

The traditional valve orifice system had some shortages like: loose structure, more throttling loss, low efficiency and affected highly by operating frequency, then proposed and adopted a new type of rotating-sleeve distributing-flow system for reciprocating plunger pump. Established the kinematic characteristic...

In this paper, the idea of UI space hierarchy of mobile terminal was put forward and the UI space was divided into four levels. Taking iPhone5 as an example, RGB, angle, opacity, size and other regional shadow parameter values were set first of all and then representative sample combination was selected...

Ball transmission mechanism is a new type power delivery structure. Based on the merits and demerits analysis of belt, chain, gear and fluid drive, the ball transmission mechanism is put forward. The structure and working process of same or reverse direction ball transmission mechanism were described,...

Hydraulic Confined Piston Engine (HCPE) is a new type power device especially suitable for hydrostatic driving vehicle. Its working process is influenced by complex coupling of liquid, solid and gas. Its working process simulation is the basis of later performance evaluation and design optimization....

The performances of lubricant liquid film of groove-pores coupled mechanical seal are numerical simulated by Fluent, and the effects of depth of groove and pore on liquid film performances are analyzed. The results indicate that dynamic pressure generated by groove-pores coupled mechanical seal is higher...

This paper presents a shape adjustable C-C subdivision algorithm by introducing adjusting parameter . Based on this algorithm, this paper proposes a shape adjustable surface modeling method with explicit solutions of Bézier control points by taking 2-ring singular points as the control grid and using...

Welding experiments of DP980 high strength steel plate with fiber laser have been processed. The influence of welding parameters on welding quality has been investigated. As well as microstructure and mechanical character of welding seam has been analyzed. It is showed that the joint appearance of DP980...

In order to reveal the function of Mg on the characteristics of mechanical properties in high strength low alloy steel, the steels containing with different Mg contents were refined with vacuum induction furnace and rolled with double-stick reversible rolling mill. The characteristics of mechanical properties...

The secondary internal force caused by temperature in statically indeterminate bridges are usually huge, sometime is the control factor in bridge design. Since the temperature investigation of bridge construction site is difficult to predict, there deviation between design joining temperature and actual...