bluuebunny/crossref_metadata_2025 huggingface dataset:
Humanity: A Perspective that Mechanical Engineering Education should Observe - Teachings from The Analects of Confucius and Book of Changes
Authors: Guo Ying Jie
Published: September 2013

To show that humanity is a unique perspective that mechanical engineering education should observe, this paper relates to The Analects of Confucius and Book of Changes, holding that humanity is valuable in mechanical engineering education because humanity is a foundation, a facilitator as well as a destination of mechanical engineering education. Besides, humanity has unique functions in the development of mechanical engineering education, i.e., humanity evolves as a factor to guarantee a fine environment, can be seen as a lever to balance the relationship between nature and society and displays itself as a mirror to reflect the qualities of man and technology. In terms of the suggestions about practicing humanity in mechanical engineering education, the paper claims that it is necessary to obtain nourishments from other disciplines, regard seriously the traditional cultures, refer to the realistic demands of the society and put humanity in international context.
Global Impacts of the Asian Logistics Competitiveness and Risk Management
Authors: Liu Chi Fang , Kao Tzu Yorn , Chang Ya Fen , Tsai Yi Ru
Published: September 2013

The impact of the Asian countries logistics development crisis was significant enough to reduce the overall logistics link cost for logistics chain. Although the impact of the Asian countries logistics link crisis was how to reduce the cost, but what is the important factors to reduce? Which could be depend on for starting reduce logistics activities.
Design and Implementation of Supesite-Based Experience Exchanging Platform
Authors: Wang Ya Fei , Lv Ya Fei , Zhou Yun Cai
Published: September 2013

This paper introduced the design ideas of university teachers website platform to exchange their experiences, which was based on LAMP architecture and the SupeSite management system. LAMPs advantages of rich web resources, cross-platform, high-performance and SupeSites advantages of intelligent selection and in-time updating are taken consideration. It described the construction process of the platform carefully and systematically. After introducing the function of the website of www.ncutedu.com, we focused on the users' operation and the administrators maintenance of this system. The platform put into use meets the needs of browsing, communicating and sharing. It plays a positive role in autonomic and cooperative learning.
Modeling of Logistics Information Service System for Display Industry Based on ARIS
Authors: Tian Ying , Ji Shou Wen , Zhang Bin
Published: September 2013

The modeling of logistics information system is research. Firstly, the development of industrial cluster is introduced. The unified logistics information system is needed. Secondly, ARIS method is presented. Then the target image and organization structure are analyzed and the logistics business model of Beijing digital TV Park is set up. Finally, the application of ARIS-based logistics business modeling is innovative and practical for Industry Park.
Preparation of Superhydrophilic Polyethersulfone by Sol-Gel Method
Authors: Li Guang Fen , Zhang Jin Chao , Sun Xu Dong
Published: September 2013

Here a simple method was developed to fabricate hydrophilic Polyethersulphone film via a sol-gel process. The correspondent hydrophilicity was evaluated by infrared spectral analysis, X-ray photoelectron spectroscopy, the contact angle measurement, atomic force microscope and scanning electron microscope analysis, respectively. Both FTIR and XPS analysis indicated that the film surfaces have a relatively dense sol layer, which favors to become hydrophilic. AFM analysis demonstrated that the higher hydrophilicity was mainly attributed to the surface roughness, while SEM images show that the micro/nanometer crater-like protrusions appears on the film surfaces, whereas the spongy structures & the finger-like structures appear in cortex and intermediate layer respectively. This leads to the hydrophilic film forming after film being treated by sol-gel method.
Design of an Image Transfer System Based on the USB Interface
Authors: Pang Chun Ying , Liu Ji Kui , Sun Xiao Lin
Published: September 2013

To realize images high speed and real-time transfer, the high speed USB2.0 interface which is based on TMS320DM642’sHPI and the CY7C68013A’sGPIF was designed. The projects of the hardware interface, firmware and application program were also presented. The interface implements the Bulk transfer mode, which makes the throughput meet requirement. The system makes the lossless transfer of the images possible, write speed of which is up to 30.7MB/s and read speed is up to 25.6MB/s. The result shows the design can meet powerful data transfer requirements.
Research on Missile System with Strapdown Guidance Technology
Authors: Feng De Long , Yang Suo Chang , Liu Ying Xi
Published: September 2013

This paper presents a project of missile guidance system based on the strapdown guidance technology. The project is composed of strapdown seeker and inertial measurement unit. The integrated guidance and control technology have been adopted. The project raise accuracy of missiles on the premise that the low cost should be guaranteed. According to simulation experiment, this paper proves the feasiblity of the scheme, and it has good ballistic missile.
The Design for Remote Wireless LED Display Based on ARM
Authors: Xiong Fei Qiao , Ao Bang Qian
Published: September 2013

In this paper, we design a full color LED display remote wireless control system, which based on the ARM microprocessor for embedded real-time operating system technology, and combine with the wireless WiFi broadband for wireless data transmission. The system uses the ARM microprocessor as the core and the device of FPGA. It can transport and update wireless data、refresh dynamic features、scan the display with cyclic and so on. It can achieves remote wireless control of LED display.
Exploring on the Print-through Criterion of Offset Printing
Authors: Yang Yong Gang , Mu Li Li , Lu Yang
Published: September 2013

In order to control digitally the print-through, the print-through criterion of offset printing was studied in this article. For 4 given paper samples, the paper properties including paper opacity and K&N ink absorbency were tested, and then print-through value expressed with ΔDand ΔEab*was measured under 9 sets of printing condition. The results showed that lower printing press and higher printing speed were helpful to reduce the print-through. And under the same printing conditions, the print-through value of cyan ink print was slightly larger than that of magenta ink print. In addition, the print-through values of offset paper samples were a bit larger than that of newsprint samples. In particular, no matter what kind of conditions were, the print-through value expressed with ΔDand ΔEab*were lower than 0.04 and 4NBS when thePTRvalue was larger than 72%. The criterion of print-through was firstly given, which was very helpful to choose paper during the offset printing.
Route Chart to Stabilizing Permanent Maglev Rotator
Authors: Qian Kun Xi , Jing Teng
Published: September 2013

Permanent maglev has been since long recognized to be unstable because of Earnshaw's theory, which theoretically proved that permanent maglev can not achieve stable equilibrium in static state. How about that in dynamic state, for example, about a rotator, nobody has given an answer until now actually. A permanent maglev pump and a permanent maglev turbine have been developed, by using a patented permanent magnetic bearing developed by the author. Experiments demonstrated, there is a critic speed either in the pump or in the turbine, under which the rotors in the pump and the turbine have a maximal eccentricity being possible to reach the gap between the rotor and the stator. That means the rotors have contact with the stators occasionally, and thus the rotor is not suspended. In case the rotating speed is higher than this critic speed, the rotors' eccentricity will be remarkably smaller than the gap between the rotor and the stator, that is to say the rotor is stably levitated. Further investigation exhibtes that at the critic speed a so-called gyro-effect is generated which stabilizes the rotor, just like a gyro standing over a ball, if the rotating speed is large enough it can be stable over the ball. The critic speed, essentially to be minimal stable speed of the rotor, depends on the rotating inertia of the rotor and the bearing force, the larger the inertia and the larger the force, the lower the critic speed. Conclusively, a route chart to stabilization of permanent maglev rotator has been clear: in static state, permanent maglev is unstable (Earnshaw's theory); as the rotating speed gradually increases but not up to a critic speed, the permanent maglev rotator is also unstable; in case that the speed equals or is larger than this critic speed, the permanent maglev rotator is suspended stably because of gyro-effect; the critic speed is affected by rotating inertia of the rotor and the bearing force, by larger inertia and larger bearing force, the critic speed will be smaller.
Synthesis of Polyacrylate Dispersants and the Influence of these Dispersants on Rheological Properties of Unsaturated Polyester Resin (UPR)/Aluminum Hydroxide (ATH) Composites
Authors: Li Yuan , Tang Song Chao , Cao Zheng Fang , Meng Li Liang , Wang Bing
Published: September 2013

Polyacrylate dispersants were synthesized by applying orthogonal array experiment method, among which the affecting factors include chain transfer agents: isopropanol (IPA). dodecyl mercaptan (DDM); initiators: benzoylperoxide (BPO), azobisisobutyronitrile (AIBN) and their contents, temperature, the content of acrylic acid and types of the monomers of solvation chains, of which poly (methacrylate), poly (ethyl acrylate), poly (butyl acrylate) were solvation chains. The optimal factors were obtained by comparing the viscosity decrease of the unsaturated polyester resin (UPR)/aluminum hydroxide (ATH) composites with different dispersants, and it showed that the dispersant with poly (butyl acrylate) as solvation chain whose length is around 7.0nm has the best result of improving rheological properties of UPR/ATH Composites and reducing systems thixotropy.
Fire Risk Assessment of Fire Retardant Polyurethane Thermal Insulation Materials for Exterior Walls of Buildings Based on Analytical Hierarchy Process
Authors: Li Li Jun , Li Feng , Zhang Ze Jiang
Published: September 2013

Different flame retardant contents of polyurethane rigid foam (PRF) were prepared in this paper. Combustion performances of PRF were tested by cone calorimeter (CONE). Fire risk of PRF was evaluated based on Analytic Hierarchy Process (AHP). The evaluation results were compared with the traditional LOI results. It was found that the evaluation method based on AHP combined with CONE test results for evaluating fire hazard of thermal insulation material for exterior walls of buildings is more accurate and objective compared with the method of the traditional LOI.
Corrosion Inhibition of Low Carbon Steel by Pluchea Indica Less. in 3.5% NaCL Solution
Authors: Pramana R.I. , Kusumastuti R. , Soedarsono Johny Wahyuadi , Rustandi A.
Published: September 2013

Inhibition of low carbon steel (LCS) corrosion in 3.5% NaCl of Pluchea indica Less. leaves extract (PILLE) has been studied using various investigation techniques such as weight loss and polarization methods. The percentage of inhibition increased as the concentration of the inhibitor increased. The results of corrosion test reveal that the extract behaves as a mixed type corrosion inhibitor. Optimum inhibition is reached from 3 mL gambir extract for immersion time of 216 hours. Fourier transform infrared (FTIR) spectroscopy result of adsorbed film on LCS surface containing PILLE shows that in changes in the functional group frequencies of the organic component of the extract.
Effects of Seawater Immersion on Mechanical Properties of CFRP Composites
Authors: Huang Qi Zhong , Hu Zhao Hui
Published: September 2013

Water absorption behavior and mechanical properties variation of the carbon fiber reinforced epoxy matrix composites (CFRP) immersed into artificial seawater were investigated by experiments. The rate of water absorption of the composite specimens is gradually reducing as the duality of immersion increasing. Due to the reversible and irreversible changes in the resin matrix and the failure of the fiber/matrix interface, the tensile strength, the flexural strength, and the ILSS of the composite specimens after 70 days immersion decreased 9.3%, 13%, and 17% respectively. And the tensile modulus and the flexural modulus the specimens after desorption were 83% and 70% of the original state, respectively
The Use of Geopolymers in Rehabilitation of Reinforced Concrete Structures
Authors: Dufka Ámos , Kosíková Jana , Mészárosová Lenka
Published: September 2013

The subject of this paper is option analysis of the use of geopolymers as matrixes to repair mortars designated for rehabilitation of reinforced concrete structures. Due to their specific properties, geopolymers show a high potential mainly for special applications. Rehabilitation of reinforced concrete structures exposed to extreme conditions is a field in which it is possible to effectively take advantage of geopolymers ́ exceptional properties. In this particular case, we focus on comparing the behaviour of polymer-cement materials commonly used in the rehabilitation of reinforced concrete structures and the one of geopolymer-based mortars.
Global Gaussian Collocation Method for Free Vibration Analysis of Laminated Composite Plates
Authors: Wu Jiang , Xiang Song
Published: September 2013

In the present paper we used the global Gaussian collocation method and trigonometric shear deformation theory to analyze free vibration of laminated composite plates. Natural frequencies computed by the present method are found to agree well with those from some available published results.
Electrochemical Performance of Q235 Steel in Different Temperature and Different Waste Water
Authors: Zhang Ying Ying , Li Ai Gui , Han Wen Li , Zhou Bing , Xie Bei Bei , Zhao Chang Ying , Jia Ping Jun , Jia Guang Meng
Published: September 2013

Electrochemical Performance of Q235 steel was measured in different temperature and different waste water. The result showed that the protection current of Q235 steel would increase with the temperature increasing.
An Analytical Solution of Natural Frequency for Symmetric Laminated Composite Plates
Authors: Xiang Song , Chen Ying Tao
Published: September 2013

In this paper the governing equations of cross-ply symmetric laminated composite plates are derived based on the trigonometric shear deformation theory. Generalized Navier type solutions are obtained to predict the free vibration behavior of cross-ply symmetric laminated composite plates. The analytical solutions of natural frequencies are obtained for thick and moderately thick plates as well as for thin plates, and compared with some available results in other papers. Through numerical examples, the high accuracy of present method for free vibration analysis of cross-ply symmetric laminated composite plates is demonstrated.
Optimization of Fermentation Medium for Pullulan Production by Aureobasidium pullulans A225 Using Plackett-Burman and Response Surface Methodology
Authors: Xie Yu Feng , Ma Xiao Lei , Gao Yun Feng , Lu Xing Da
Published: September 2013

In this study, response surface methodology (RSM) was used to optimize the medium based on the PlackettBurman and Central-Composite Designs for the production of pullulan using a strain of Auerobasidium pullulans A225. Peptone, K2HPO4, and MgSO4 were found to have significant effects on pullulan production using the PlackettBurman Design. The steepest ascent experiment was adopted to determine the optimal region of the medium composition. The concentrations of the three above mentioned compounds were further optimized using the Central-Composite Design. Results showed that the final concentration of medium optimized using RSM was 6.34 g/L peptone, 7.91 g /L K2HPO4, and 0.46 g/L MgSO4. Production of pullulan reached 72.56 g/L under the optimized medium.
The [Ti] Content Control of the Tire Cord Steel 82A
Authors: Zhang Peng Fei , Xue Zheng Liang , Zou Feng , Xiong Rui , Zhu Ting Ting , Wang Guang Jin , Zhu Zhi Peng
Published: September 2013

Based on the characteristics of the production process and quality level of the cord steel 82A, this paper focus on the analysis of the converter terminal temperature, terminal oxidability and the converter slag on the influence of the content of titanium in steel, which combined the oxidation removing related theory of titanium element in steel, and puts forward effective measures of ultralow titanium content controlling in steel, and obvious effects have been obtained in the production: the average [Ti] content is 4.9ppm in the end products, in which the proportion of less than 5ppm is above 90%.
Recycling MSTP Sludge as an Admixture in Concrete
Authors: Lu Liu Lei , Ouyang Dong , Wen Xi Lian , Liang Guan Cheng
Published: September 2013

One of the main objectives of this study was to activate the pozzolanic activity of sludge, produced by municipal sewage treatment plants (MSTP), make it become an admixture to replace a part of cement in concrete. Nowadays, a significant quantity of MSTP sludge is obtained in China. That is why this paper examines the possibility of adding this waste product to plain concrete with Portland cement. Preliminary studies are carried out on using MSTP sludge as an admixture by thermal (calcining) and mechanical (grinding) treatment. The pozzolanic activity of the calcined sludge ash (CSA) evaluated by Cement Mortar test. The CSA-blended cement concrete was formed into specimens of cubic concrete with 100 mm×100 mm×100 mm. They are with 30 wt. % cement replaced by CSA, which was prepared by the optimal activation conditions. The Cement Mortar test results revealed that the optimal activation conditions of CSA were as follows: calcined at 800°C for 2.5 hours followed by fast cooling in air and then ground until 60 minutes. Besides, the compressive strengths of concrete specimens with added 30% CSA were 103.6% and 105.3% of those of the ordinary Portland cement concrete specimens at 7 and 28 days, respectively. These results demonstrate the feasibility of recycling MSTP sludge as an admixture in concrete for construction engineering.
Preparation of a New Unburned Brick from Ti-Bearing Blast Furnace Slag and PVA Modified by Epikote
Authors: Kong Xiang Wen , Ren Li Li , Ai Xia , Zhang Jing
Published: September 2013

A new unburned brick was prepared from the Ti-bearing blast furnace slag as an aggregate and PVA modified by epikote as cementitious materials. The effects of modified PVA and auxiliaries on compressive strength of unburned brick were studied by the orthogonal test method. The results show that samples have better properties and low cost when the samples have a composition of slag dosage 72 %, modified PVA dosage 6%, auxiliary 1 dosage 6%, auxiliary 2 dosage 10%, water 6% and the process conditions of preparing the brick sample were mixing time 1 h, forming time 10 min, forming pressure 40 MPa, and curing time 7 d. The study reveals that the samples properties can meet the standard requirements of excellent grade products (MU20) in GB11945-1999.
Study on Corrosion Inhibition of Glutaraldehyde for 304 Stainless Steel in Simulated Cooling Water Containing Sulfate-Reducing Bacteria
Authors: Lin Wei Wei , Ge Hong Hua , Zhao Li , Wang Xue Juan
Published: September 2013

Corrosion control of glutaraldehyde biocide for 304 stainless steel in simulated cooling water system containing sulfate-reducing bacteria (SRB) was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The results revealed that impedance values of stainless steel electrode increased gradually while the passive current densities decreased with the increasing concentration of glutaraldehyde. The biocide improved good anti-corrosion performance to stainless steel in bacteria system. The impedance value |Z|0.05 increased from 19.72 kΩ·cm2 to 33.77 kΩ·cm2, and the passive current density reduced from 0.93 μA·cm-2 to 0.16 μA·cm-2 when the glutaraldehyde concentration reached 80 mg/L.
Study on a Structure of 2,6-Pyridine-Dicarboxylic Acid Mn, Mn2(C7H3NO4)24H2O
Authors: Liu Hai Xing , Zhang Qing Hua , Yu Zhang Xue , Zhang Xiao Ping , Xu Yang , Fan Quan Hua , Huang Ting Ting
Published: September 2013

A novel Mn metal complex C14H14Mn2N2O12 has been synthesized from hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Mn atom is six-coordinated by one N atom and four O atoms. The Mn-Mn bond is existent. The crystal packing is stabilized by O-H...O hydrogen bonding interactions.
Introduction of Adsorption Mechanisms Researches on Organic Chemicals and Metallic Ions on CNTs
Authors: Tang Huan , Zhao Ying , Liu Dong Mei , Lu Jing , Zou Yi , Cui Fu Yi
Published: September 2013

Carbon nanotubes (CNTs) have aroused widespread attention due to their high potential sorption capability for chemical pollutants. This review summarizes the adsorption mechanisms of organic chemicals and metallic ions with CNTs in aquatic environment and the factors affecting the adsorption. For a better understanding of the mechanism, future research works on combining the chemical experience and molecular dynamics (MD) is recommended.
Research Development on Hydrophobic Modification of Cellulose Nanofibrils
Authors: Li Jing , Xu Qing Hua , Jin Li Qiang
Published: September 2013

Cellulose nanofibrils as an emerging class of biomaterials have some incomparable advantages in the field of nanocomposite materials. But a challenge associated with using cellulose nanofibrils in composites is the lack of compatibility with hydrophobic polymers and various modification methods have been explored in order to address this hurdle. This review summarizes some previous useful researches about hydrophobic modification of cellulose nanofibrils and also briefly describes their application in various fields.
Synthesis and Characterization of MgO-Filled Rectangular Carbon Nanocapsules
Authors: Liu Yang , Su Jun
Published: September 2013

A novel MgO-filled rectangular carbon nanocapsules was fabricated by pyrolyzing acetonitrile with the assistance of MgO and a small quantity of Fe3+. The nanocapsules were analyzed by powder X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy. The lengths of the rectangular nanocapsules sides range from 40 nm to 60 nm and the core part of the rectangular carbon nanocapsules consists of cubic phase MgO. A small quantity of Fe catalysts plays an important role in the growth of rectangular carbon nanocapsules.
Liquid-Free Approach for Alignment of CNTs Bundles via Electrostatic Field
Authors: Xu Xin Guang , Zhou Zheng Gang
Published: September 2013

A liquid-free approach was developed to align carbon nanotubes (CNTs) bundles composed of oriented CNTs. Electrostatic field was applied to the CNTs bundles at ambient environment. The proper dispersion and alignment of CNTs bundles was confirmed by scanning electron microscopy (SEM). Vertically alignment feature of CNTs bundles with one end embedded in film substrate could be observed. An analysis of the polarization-driven force between electrodes is considered to explain the CNTs bundles aligning process.
Application of a Nano-Material Releasing Anion on Rice Paper
Authors: Wang Fang , Li Qing Shan , Li Fu Bin
Published: September 2013

A nano-material named opal blended with polymer, then were added into slurry, after a series of special paper-making process, the rice paper releasing anion was successfully prepared by us. By test of SEM, we observed nano-structure morphology in the image of opal particle and rice paper sample. A series of mechanical properties had been tested as GB18739 or QB/T3515 standard. After testing of anion concentration, maximum of rice paper reached -9510cm-3，meet the needs of human health. There is no doubt opal is a kind of environmental material for human health.
Fabrication of Nanocolorants Using Miniemulsion Solvent Evaporation Technique
Authors: Zhao Xiao , Xu Shan , Xie Gao Zhan
Published: September 2013

The combined miniemulsion and solvent evaporation (MESE) method was employed to fabricate hydrophobic dye/polymer composite colorants in the present work. Using dynamic light scattering tests, the effect of the formulation variables on the size and size distribution of the prepared nanoparticles was examined. Transmission electron microscopy, UVvisible spectrophotometry, X-ray photoelectron spectroscopy, and elemental analysis results indicate that dye molecules or aggregates were successfully encapsulated in the poly (methyl methacrylate) matrix using the MESE method and the resulting composite colorant could be dispersed in water.
pH Dependence of the Size and Shape of the Gold Nanoparticles Prepared by Peptides
Authors: Wang Chun Rong
Published: September 2013

The size and shape of gold nanoparticles controlled by pH was studied in the reacted solutions containing peptides (NH2-Leu-Aib-Trp-Ome) as reducing agent. The resulting gold nanostructures were characterized by transmission electron microscopy (TEM), XRD and UV-vis-NIR spectra. Different shape of gold nanoparticles such as spheres, multipod and branch were prepared by changing the pH of solution. The resulting gold nanostructures may be have potential applications in the Surface Enhanced Raman Spectroscopy (SERS) and NIR-absorbing filters and coatings.
Synergism between Intumescent Flame Retardant and Organo-Montmorillonite in Polypropylene Nanocomposites
Authors: Chen Ya Jun , Wang Chao , Yang Chun Zhuang
Published: September 2013

A simple method of melt blending was used to prepare PP, PP/IFR and PP/IFR/OMMT composites. The Flammability and mechanical property of the composites were investigated. Limiting oxygen index (LOI) tests and cone calorimetry results indicate that there are synergisms between IFR and OMMT. Incorporation of OMMT led to a further increase in LOI value of intumescent retarded PP samples when the addition amounts of OMMT are less than 2%. Cone calorimeter measurements demonstrate that the peak heat release rate (PHRR), average mass loss rates (AMLR) and fire growth rate index (FIGRA) of PP/IFR/OMMT composites are all less than that of PP/IFR30 when OMMT contents are less than 1.5% (including 1.5%).Char residues after cone calorimeter tests were investigated. Unlike the expansion char residue of PP/IFR, the char residues of PP/IFR/OMMT display a lower height and compact morphology, which are due to the barrier effect of OMMT. The presence of less than 1.5% OMMT can somewhat enhance the tensile strength and Izod impact strength of PP/IFR/OMMT composites. Larger OMMT amounts decrease the above mechanical properties.
Electrocatalytic Property Toward Dopamine and Uric Acid of the Nanoparticles TiO2 Modified Electrode
Authors: Zhang Ying , Li Guo Bao , Yang Qiu Xia
Published: September 2013

The titanium sol was prepared by depositing the organic titanium on glassy carbon electrode surface. Electrophoresis time and the applied voltage as well can markedly influence the electrochemical behavior of the nanoTiO2film. In contrast with bare glassy carbon electrode, the nanoTiO2film on glassy carbon electrode had a good electrocatalytic activity to dopamine (DA) and uric acid (UA) in PBS solution. The result showed that there was a linear relationship between the oxidation peak currents and the concentration of DA from 8.0×10-6to 4.0×10-4mol·L-1by differential pulse voltammetry (DPV) and there was a linear relationship between the oxidation peak currents and the concentration of UA from 8×10-6to 1.0×10-3mol·L-1. This modified electrode was quite effective to detect DA and UA in simultaneous determination of these species in a mixture.
Thermal Non-Destructive Testing for the Titanium Implants
Authors: Zhu Qi Fang , Sun Ze Ming , Ma Tong Da , Li Pu , Zhang Dong Hui , Vavilov Vladimir Platonovič
Published: September 2013

Active thermal NDT is a promising technique for the detection of structural defects in solids. In this paper, the results of the first-stage research devoted to infrared thermographic detection of cracks in titanium alloys are presented. The test results obtained show that the Fourier analysis is a convenient data processing technique in active thermal NDT. Images of phase are more noise-resistant and able to reveal deeper defects compared to images of amplitude. In application to the inspection of bottom-hole defects in 9.6 mm-thick Ti6Al4V titanium alloy samples, it has been found that a minimum detected defect should have diameter from one to two times greater than its depth.
Preparation of Nanoscale Magnesium Fluoride Powders by Ultrasonic-Assisted Direct Precipitation Method
Authors: Wang Hai Yang , Li Ping , Wu Wan E
Published: September 2013

Using MgCl2·7H2O as the starting material and NaF as precipitating agent, nanoMgF2 powder were prepared by sonochemical method. Morphological structure of the particle is characterized by means of XRD and SEM, TEM and Flourier Transition Infrared Spectrum. The influence factors, such as reactant concentration, reaction temperature and ultrasonic frequency were discussed. The optimum sysnthsis conditions was acquired, such as that the molar ratio of [F-] and [Mg2+] is 1/7.5, the reaction time 2h, the reaction temperature 80°C, the ultrasonic frequency 80kHz.
Electrochemical Behavior and Determination of Rutin at Inlaid Multi-Wall Carbon Nanotubes Modified Graphite Electrode and Reline Ionic Liquids
Authors: Ye Li Qing , Zheng Yan , Yan Li Li , Gao Yun Tao
Published: September 2013

Inlaid multi-wall carbon nanotubes modified graphite electrode (MWCNTs-GE) was fabricated, combined with Reline Ionic Liquids which possess high conductivity and wide electrochemical window, the electrochemical behavior and determination of Rutin was investigated by cyclic voltammetry and differential pulse stripping voltammetry. The result shows that the oxidation peak current of rutin increased obviously at the inlaid multi-wall carbon nanotubes modified graphite lectrode and in the Reline Ionic Liquids compared to that at the bare graphiteelectrode (GE). In phosphate buffer solution (pH=6.3), one pair of redox peak of rutin was obtained by cyclic voltammetry with 0.32 V of Epaand 0.24 V of Epc. The oxidation peak current value was linearly related to the concentration of rutin in the range of 2×10-6~3×10-5mol·L-1and the detection limit was 9.4×10-7mol·L-1. The average RSD of rutin was 4.0%. The average recovery was 100.2%. The inlaid multi-wall carbon nanotubes modified graphite electrode and the Reline Ionic Liquids had the function of electrocatalysis to oxidation of rutin obviously.This method is reliable, fast and convenient, sensitive and can be used for the determination of the content of rutin.
Yellow Organic Light-Emitting Devices Based on Alq Doped DPIHQZn
Authors: Gao Yong Hui , You Zhong Qi , Jiang Wen Long
Published: September 2013

The Electroluminescence (EL) characteristics of a novel yellow emitting material (DPIHQZn) were investigated in this paper. The results demonstrated the DPIHQZn with strong emitting and hole-transporting ability. Based on the performance,a series of doping yellow organic light-emitting diodes were fabricated.The yellow devices were fabricated as follows: ITO/ 2T-NATA(40 nm)/NPB(10 nm)/Alq:x%DPIHQZn (35 nm)/Alq (35 nm)/LiF(5 nm)/ Al,x=1,2,3,5;the maximum luminance was 3180 cd/m2at an applied voltage of 15V,while the Commission International de LEclairage coordinates was (0.40,0.48).
The Research of Qualitative Analysis Method for Far-Infrared Fiber
Authors: Gan Ya Wen , Zhang Yi , Yuan Shu Hua
Published: September 2013

Far-infrared fiber can promote blood circulation, accelerate microcirculation and thermal insulation.It also has a very strong effect for health care. In view of these functions, far-infrared fiber has industrialization, and widely used in clothing, bedding. But it has no unified method for far-infrared fiber qualitative analysis. This paper briefly describes the basic content of the Near-infrared Spectroscopy technology.Use Shanghai Lengguang S400 near-infrared quality analyzer , using Near-infrared spectroscopy technology and using PLA method to establish the far-infrared polypropylene qualitative model and the far-infrared polyester qualitative model.This method can rapidly and accurately to do qualitative analysis of far-infrared fiber.
Investigation on Efficient Vanadium Extraction from Vanadium-Bearing Molten Iron
Authors: Liu Xiang Hai , Chen Deng Fu , Li Yuan Kun , Long Mu Jun , Fan He Lin , Zhao Yan , Chen Chun Mei
Published: September 2013

Vanadium extration is a significant process to improve the additional value of vanadium-bearing molten iron. This article carried out the experiments of blowing oxygen and smelting on V extration from vanadium-bearing molten iron, which is made from vanadium titanium magnetite by the process of non-blast furnace. The different controlling parameters including the reaction time, temperature and inserting depths of oxygen lance, are studied aiming to increase the rate of V extraction. The thermodynamics calculation is performed during the process. The results show that, the appropriate blowing time is 9 mins, and the end-point temperature of molten pool should be ranged of 1360-1395 °C. Moreover, the larger inserting depth is beneficial to the V extraction. The oxidation patterns of the smelting process are discussed.
Synthesis and Characterization of Ni-Doped ZnO Nanorods Prepared by Hydrothermal Method
Authors: Wei Zhi Qiang , Wu Xiao Juan , Zhang Ling Ling , Feng Wang Jun , Yang Hua
Published: September 2013

Ni-doped ZnO diluted magnetic semiconductors nanorods were successfully synthesized by hydrothermal method. The crystal structure, morphology, constituent elements and optical proprety of the products using this method were investigated via X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray energy dispersive spectrometry (XEDS) and ultraviolet-visible spectroscopy (UV-vis). The experiment results show that the morphology of samples were nanorods with good dispersion, all the diffraction peaks correspond to the wurtzite structure hexagonal phase, no other impurity phase appeare, and the Ni2+ions successfully substituted for the lattice site and generate single-phase Zn1-xNixO. The band gap increases firstly and reduces afterward with the increase of Ni2+contents.
Orange Electrophosphorescence of 2-(9, 9-Diethylfluoren-2-yl)-5- Trifluoromethylpyridine Iridium Complex
Authors: Zhang Wen Guan , Pang Hui , Zhao Sheng Min
Published: September 2013

Emission spectrum of Iridium complex bis [2-(9, 9-diethylfluoren-2-yl)-5-trifluoromethyl-pyridinto-C3, iridium (acetylacetonate) (fl-5CF3-py)2Ir (acac) in THF was 589 nm. Two weak UV absorption bands can be assigned to spin-allowed singlet metal-to-ligand charge transfer (1MLCT) and spin-forbidden 3MLCT transitions. The organic light-emitting devices A ITO/PEDOT: PSS/PBD: PVK: (fl-5CF3-py)2Ir (acac) (8 %) /LiF/Al and B ITO/PEDOT:PSS/PBD: PVK: (fl-5CF3-py)2Ir (acac) (8 %) /TPBi/LiF/Al were fabricated using iridium complex as emitter dopant with electro-luminescent spectra at 592 and 588 nm at the bias voltages of 9, 11 and 13V. Devices A and B exhibited luminance of 5265 (at 15 V) and 4098 cd/m2 with Commission International de LEclairage (CIE) coordinates of (0.5805, 0.4185) and (0.5815, 0.4176), respectively. Device B (with TPBi) emitted orange light more efficiently than Device A (without TPBi).
Effects of P Addition on the Oxidation and Corrosion Behavior of Sn-9Zn-1Bi Solder Alloy
Authors: Huang Hui Zhen , Wei Xiu Qin , Zhou Lang
Published: September 2013

The oxidation and corrosion behavior of Sn-9Zn-1Bi lead-free solder alloys with different P content were investigated by weighing the mass of the alloy, as well as the effects of P on the microstructure. The results indicate that the oxidation resistance and the corrosion resistance of Sn-9Zn-1Bi solder alloy can be enhanced significantly with the increase of P content. The microstructure observations show that P addition into Sn-9Zn-1Bi solder alloy can refine the microstructure and the numbers of dark rod-like Zn-rich phases are decreased with increasing of P addition.
Crystallographic Studies of Nd3-xYxFe27.5TM1.5(0.6≤x≤2.4, TM=Ti, Mo) Compounds
Authors: Han Song Bai , Liu Yun Tao
Published: September 2013

Nd3-xYxFe27.5Ti1.5(0.6≤x≤2.4) and Nd3-x’Yx’Fe27.5Mo1.5(0.6≤x’≤2.4) alloys have been synthesized successfully and studied by means of powder neutron diffraction. The structural analyses indicate that the main phases in all cases crystallize in the monoclinic Nd3(Fe,Ti)29-type structure with a space group A2/m. Ti and Mo prefer to occupy 4g, 4i1 and 4i2 sites exclusively and the elemental site occupancies are dominated by the site sizes and thermodynamic effects.
A Novel Method for Prepairing Higher Performance Picroside I Surface Molecularly Imprinted Polymers for TCM Research
Authors: Liu Qing Shan , Li Ke Qin , Li Jun , Yin Xiao Ying , Yan Tian Hua
Published: September 2013

To establish a novel method for preparing molecularly imprinted polymers for Picroside I with better performance on TCM research contrast to previous studies, we have prepared novel surface molecular imprinted polymers (S-MIPs) using Picroside I as the template molecule, Acrylamide (AM) as the functional monomer, and silica gel as the carrier. The morphology of S-MIPs was characterized by scanning electron microscope (SEM) and its static adsorption capacity was measured by the Scatchard equation.
Effects of Grain Refiner and Cooling Rate on Solidification Structure of H62 Brass
Authors: Shuai Ge Wang , Li You , Guo Zheng Hua
Published: September 2013

In this paper, effects of different grain refiners on solidification structure of H62 brass under different cooling rates were investigate by macro corrosion, SEM and EDX analyses. Results of experiments indicate that the columnar crystal zone of H62 brass is completely eliminated and the grain size is reduced remarkably by 0.01%B. It has been found that the columnar grain zone is also eliminated by 0.1Ti, 0.1Zr, 0.1Ti+0.1Zr and 0.1Ti+0.1Zr+0.01B additions, respectively, but their grain refining effects are not as good as 0.01B. The grain size of H62 ingot with 0.1Ti addition prepared by sand mold casting is coarser than prepared by permanent mould casting. The microstructures of as cast H62 alloy are composed of α dendrite phases and rodlike β' phases which enrich on grain boundary to form an array structure.
Removal of Heavy Metals in Water by Functionalized Mesoporous Silica Materials: A Review
Authors: Wu Yi Qiao , Wei Jian Wen , Wang Dun Qiu
Published: September 2013

This paper reviews the emerging applications of mesoporous silica materials to be as adsorbents for heavy metals removal from the wastewater. Functionalization of the ordered mesoporous silica with organic or hybrid function groups provides new opportunities for fine-tuning the chemical, physical and mechanical properties of these novel materials. This has led to an interest in application of these materials as effective and low-cost adsorbents for removal of heavy metals, such as Pb (II), Cu (II), Hg(II), Cr (III), Cd (II) and Ni (II).
The Influence of Different Fire Resistance Materials on the Thermal Protection Property of Firefighter Uniform
Authors: Zhang Hua , Lai Jun , Gao Yan , Lai Kan , Shi Wei
Published: September 2013

Based on the thermal stability test on the different fire resistance materials, this article study the Thermal protection property (TPP) of the different materials composite structure and analyses the effect that the materials changes on the TPP of the composite structure products. The results indicate that the thermal insulation batts made by Aramid fiber materials have excellent thermal stability, adding a certain percentage of Aramid fiber 1414 into the thermal insulation batts makes for the batts having stably insulation function, and it only needs 10% around additive amount to satisfy this demand, compared with polyimide and PPS, Aramid fiber 1414 have better thermal stability when encountered fire.
Study on Optimization of Activated Carbon Preparation Process Based on Apricot Shell
Authors: Jia Hong Min , Wang Yan Hui , Xu Guo Zhong
Published: September 2013

Activated carbon is a kind of material with many pores and large specific surface. Activated carbon has been widely applied in many fields for its excellent adsorption and steady chemical characters. Activated carbon was prepared with apricot shell as raw materials by the sequence of crushing, screening, carbonization and activation. To improve adsorption ability of activated carbon, KOH was added as a activator into the carbonization materials. The effect of carbonization and activation conditions on benzene value and Vitamin B12 value were investigated. Benzene value and Vitamin B12 value of activated carbon were improved from 163.01mg.g-1 and 19.16mg.g-1 to 589.14mg.g-1 and 35.02mg.g-1, respectively.
Electrical and Electrochromic Characterization of Poly(ethylene Oxide)/Molybdenum Doped Vanadium Pentoxide Films
Authors: Jin Ai Ping , Chen Wen , Zhu Quan Yao
Published: September 2013

The hybrid guest-host nanocomposite films based on poly (ethylene oxide) (PEO) and molybdenum doped vanadium pentoxide (V0.975Mo0.025)2O5nH2O were prepared by sol-gel and hydrothermal reaction via a two-part process. The electrical properties along and across V-O layers have been evaluated. The results indicate that the proper amount of PEO can increase the electrical conductivity of the films. The electrochromism of the films were investigated by cyclic voltammetry, the ex-situ transmission spectra and photographs. The films display a reversible multichromism (orangegreenbluebrown) upon Li+ion insertion/extraction.
Performance of Fast Thermally Reduced Graphene Oxide for Supercapacitor
Authors: Wang Hong Juan , Zhou Dong , Peng Feng , Yu Hao
Published: September 2013

Graphene with different reduction degrees was prepared by fast thermally reduction of exfoliated graphite oxide (GO) at 200-700 °C. Structure and the electrochemical capacitive performance were characterized and measured. The results show that different thermal reduction temperatures can obtain reduced graphene oxide (rGO) with different reduction degrees and influence the electrochemical capacitive performance. The rGO-400 by thermal treat at 400 °C exhibits a significantly high specific capacitance of 407 F g-1 in 6.0 M KOH electrolyte at a current density of 0.4 A g-1 and outstanding cyclic stability with 96.1% of its origin specific capacitance maintained after 2000 cycles at the current density of 10 A g-1 in GCD test.
Controllable Synthesis of Birnessite-Based Manganese Oxide Nanostructures
Authors: Liu Xian Ming , Yang Hong Bing , Yang Xue Yi
Published: September 2013

Layered manganese oxide nanostructures were synthesized by a facile hydrothermal method, using KMnO4 and CH3CH2OH as the precursors. The structure, composition and morphology of the product are evaluated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM) and Infrared (IR) techniques. The results showed that crystalline birnessite-based manganese oxide was formed and the hydrothermal time and temperature had great influence on nanostructures of the products. The electrochemical results showed that birnessite nanowires exhibit excellent cyclic stability performance in the potential application window of 1.5~4.8 V.
Influence of Solution Concentration and Annealed Time on P3HT:PCBM Film Device Performance
Authors: Zhao Xiao Hui , Cai Jia Lin , Ma Xiao Yan , Li Na , Li Xiao Wei , Fu Guang Sheng , Yang Shao Peng
Published: September 2013

The J-V curve measurment and AFM technology were applied to study the relationship between P3HT:PCBM heterojunction film solar cell devices photovoltics parameter and blend solution concentration and annealed time of this device. The Voc, Jsc, FF and PCE of device were obtained from the device prepared by three blend solution concentration respectively. Data show that with increasing solution concentration PCE of solar cell device do not always improve and it achieves maximum when concentration is 20 mg/mL. Result indicates that only when solar cell device has active layer with proper thickness its performance will achieve the best effect. Additionally, photovoltaic parameters from four sample prepared by different annealed time were obtained also. Results indicate that the device with proper annealed time of 20 min at 130°C can achieve the best effect.
Simulation of the Elastic Modulus of Mo Alloys at Both Room and High Temperatures
Authors: Cheng Hui Chao , Fan Jing Lian , Song Min
Published: September 2013

In this paper, the elastic modulus of a kind of carbide strengthened Mo alloy has been investigated at both room and elevated temperatures. OM image showed that the sintered Mo alloy has an average grain size of ~20 μm. SEM image of the fracture surface of the sintered Mo alloy after tensile deformation to facture showed that intergranular fracture is the dominant mechanism during deformation. A constitutive model has been developed to simulate the elastic modulus of Mo alloys at both room and elevated temperatures. It has been shown that the evolution trend of the elastic modulus predicted by the constitutive model broadly agrees with the experimental counterparts, although most predicted values are slightly higher than the experimental data. The relatively lower experimental data are due to the pores in the Mo alloy, resulted from powder metallurgy fabrication process.
Microstructure and Mechanical Properties of Ti-Al-Mo-V-Ta Alloys
Authors: Xiao D.H. , Li X.X. , Wu X.Z. , Liu Dan , Zhang Y.S.
Published: September 2013

P/M Ti-Al-Mo-V-Ta alpha-beta alloys were processed by hot-pressing sintering technique. The effects of Ta additions on microstructure and properties of the Ti-5Al-4Mo-4V alloys were investigated using X-ray diffraction, optical microscope, scanning electron microscope and mechanical properties tests. The results show that minor Ta addition improves the relative density and the mechanical properties of P/M Ti-5Al-4Mo-4V alloys. After sintering for 4h at 1623 K, the relative density and compression strength of Ti-5Al-4Mo-4V-5Ta alloy are 99.3% and 1950 MPa.
The Spherical Casting WC Powder and its Application in Laser Surface Alloying Treatment
Authors: Wang Lei , Cai Yi Xiang , Liu Xin , Xie Huan Wen , Tong Xin
Published: September 2013

The spherical casting WC powder is a kind of new potential wear-resistance ceramic material. In this paper, its chemical composition, surface morphology, microstructure, phase, microhardness and some powder characteristics were investigated, and then the powders were applied in laser surface alloying treatment on medium carbon steel. The results indicate that the spherical WC powder consists of (wt.%) 94.06 W, 4.03 C and 1.91 other elements including Fe, V, Cr and Nb. Most of powder particles have regular spherical shape and smooth surface, and the microstructure is acicular eutectic of WC and W2C, which leads to high microhardness of 2812 HV. The fluidity of powders is 5.97 s/50g, and the apparent density of powders is 10.1 g/cm3. The laser alloyed layer is characterized by dendritic primary phase, ledeburite microstructure and some residual WC particles. The laser surface alloying treatment with adding material of spherical casting WC powder can enhanc the abrasive wear resistance of medium carbon steel by over 200%.