bluuebunny/crossref_metadata_2025 huggingface dataset:
Composite Panels from Underutilized Wood and Agricultural Fiber Resources
Authors: Hiziroglu Salim
Published: August 2013

Rice straw, jute, coconut fiber, oil palm, bagasse and bamboo are some of agricultural resources that can be used to produce different types of value-added composite panels including particleboard and medium density fiberboard (MDF). Invasive species such as Eastern redcedar in South Western states in the USA would also be considered as viable raw material to manufacture above products. The main objective of this study was to review basic properties of both structural and non-structural panels manufactured from underutilized and agricultural species. Eastern redcedar, bamboo and rice straw were used to manufacture experimental panels. Properties of such samples including bending, internal bond strength, thickness swelling, and surface roughness were evaluated. Panels made 100% bamboo had the best properties among the other samples. Having rice straw in particleboard and medium density fiberboard panels reduced overall properties of the samples. Based on the findings of this work such species could have potential to be used as raw material to manufacture value-added panels with accepted properties.
Fabrication and Characterization of Poly(vinyl Alcohol)/Functionalized Graphene Oxide Nanofibers Produced by Electrospinning Method
Authors: Yu Yuan Hsiang , Jan Chih Jie
Published: August 2013

A series of poly (vinyl alcohol) (PVA)/functionalized graphene oxide (FGO) nanofibers with low feeding ratios of FGO to PVA were fabricated by electrospinning method. In this study, the prepared PVA/FGO nanocomposites were dispersed in water phase followed by electrospinning treatment under different operational parameters (i.e., applied voltage, feeding rate and FGO contents) to give nanofibers of various diameters and morphologies. The morphology, diameter and structure of electrospun nanofibers and FGO were investigated by Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), (TGA) and differential scanning calorimetry (DSC). SEM images showed that the morphologies of the nanofibers were improved by the incorporation of FGO at a low loading content (e.g., 0.1~0.5 wt %) as compared to pure electrospun PVA. The crystallinity and thermal stability of PVA/FGO nanofibers were also studied.
Evaluation of a Gravity Load Designed Reinforced Concrete Structure Failed under its Own Weight due to Creep in Concrete
Authors: Kaltakci Mevlut Yasar , Korkmaz Hasan Husnu , Kamanli Mehmet , Ozturk Murat , Arslan Musa Hakan
Published: August 2013

Turkish building stock is commonly composed of reinforced concrete moment resisting frames. Recent earthquakes in Turkey resulted thousands of failed or heavily damaged residential houses and office buildings. In addition of the earthquake failures, reinforced concrete structures may also failed only under their own weight. There are several examples such as Hicret Apartment in Diyarbakir (1983), Zumrut Apartment in Konya, in central Anatolia, Huzur Apartment in Istanbul (2007). On February 2nd, 2004 a 9-story reinforced concrete building in Konya (Zumrut Apartment) collapsed leaving 92 people dead. The first author of the paper was governmentally charged about the investigation of the failure causes. Carrot samples were taken from the concrete columns and steel samples were obtained from the disaster area. The dimensions of the structural members were determined. The structure was modeled in three dimensional space and vertical collapse analyses were conducted. The one of the main cause of failure was determined as the creep of the concrete occurred in excessively loaded columns. The main reasons of the damages and failures were determined to be the insufficiency in material quality, mistakes made in load selection and the inappropriate load-carrying dimensions. The construction mistakes and not obeying the design drawings are the other flaws. In this paper detailed information about the structure, creep analyses and vertical collapse analyze results were depicted in understandable format.
Anti-Algal Performances for Biocide-Enhanced Low-Density Polyethylene Film
Authors: Gitchaiwat Atthapong , Likhitlert Somthida , Kositchaiyong Apisit , Sombatsompop Kwannate , Prapagdee Benjaphorn , Israngkura Khokhwan N.A. , Sombatsompop Narongrit
Published: August 2013

In this work, low-Density Polyethylene (LDPE) films incorporated with 2-methylthio-4-ethylamino-6-tert.butylamino-triazin-1,3,5, or Terbutryn (TT) was used as anti-algal agent, at different concentrations were evaluated for anti-algal performances. Clear zone test and chlorophyll a measurement method were used for anti-algal evaluations against Chlorella vulgaris (TISTR 8580) and Phormidium angustissimum (TISTR 8979) as testing algae. Mechanical properties and surface color changes of LDPE were also observed for the effect of algaecide addition. It was found that addition of TT in the LDPE specimen did not significantly alter the tensile strength, tensile elongation and toughness properties of materials. For anti-algal test, it should be noted that the greater clear zone area (clear zone test) or smaller chlorophyll a content (chlorophyll a measurement method) the better anti-algal activities. It was found that the clear zone of the TT filled LDPE sample was observed with C. vulgaris but was not seen with P. angustissimum. When the TT concentration in LDPE was greater than 600 ppm, the C. vulgaris did not grow.
Electrochemical Reactivity on Conducting Polymer Alloys
Authors: Armel Vanessa , Winther-Jensen Orawan , Zhang Meng , Winther-Jensen Bjorn
Published: August 2013

Embedding macromolecules and active centers such as inorganic nanoparticles into conducting polymers (CPs) has been an ongoing challenge due to the normally harsh conditions required during chemical or electrochemical polymerization that limits the selection of the functional molecules to be incorporated. By developing alternative approaches for incorporating various organic and inorganic materials into CPs it has been possible to obtain efficient charge transfer within the alloys. In this report, two facile techniques are discussed for obtaining such composites: 1) In-situ polymerisation of poly (3,4-ethylenedioxythiophene) (PEDOT) in the presence of non-conducting polymers and 2) electrochemical deposition in-organic nanoparticles inside PEDOT.
Photocatalytic Recovery of Noble Metals from Waste Solutions Using a Polyoxometallate (POM)-Based Hybrid Photocatalyst
Authors: Kida Tetsuya , Matsufuji Hiromasa , Yuasa Masayoshi , Shimanoe Kengo
Published: August 2013

We attempted the photo-chemical recovery of noble metals from solutions using inorganic-organic hybrid photocatalysts based on polyoxometallates (POMs) such as PMo12O403-, SiW12O404-, and γ-SiW10O368- coupled with a cationic surfactant, dimethyldioctadecylammonium (DODA). We also used γ-SiW10O36-O(SiC18H37)2 as a photocatalyst. The four different photocatalysts dissolved in chloroform successfully photoreduced gold ions dissolved in water in a two-phase (chloroform/water) system under UV irradiation (λ< 475 nm). The γ-SiW10O36/DODA photocatalyst exhibited the best activity and was able to recover gold from solution. It was suggested that one-electron reduced γ-SiW10O369- , which was formed by UV irradiation, reduced gold ions to produce large two-dimensional particles. The formation of sheet-like particles indicates that the reduction of gold ions occurred at the interface between chloroform and water.
Investigation of ZnO Buffer for the Optical and Electrical Characteristics of Polymer/Carbon Nanotube Composite Sol Deposited on Flexible Substrates
Authors: Su Bo Yuan , Chen Meng Chun , Chu Sheng Yuan , Juang Yang Der
Published: August 2013

In this paper, the carbon nanotube was well dispersed into the poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate) (PEDOTPSS) solution with a best concentration of 4 mg/ml. The prepared sol was spun on poly (ether sulfone) (PES) substrates, showing sheet resistance as low as 19.8 Ω/sq and the high average transmittance over 90 %. The change in optical and electrical properties due to poly (ether sulfone) (PES) substrate was investigated to understand the failure mechanisms. For realizing the bending effect on electrical performance, the pre-deposited ZnO buffer was introduced to improve the deterioration during the repeated bending test. The composite polymer enhanced the electrical conductivity with less detrimental effect on the optical transparency, which suggests the potential transparent conductive films for use in developing optical and electrical device.
Influence of Amino Acids on Anti-Oxidative Properties of Green Natural Rubber and Natural Rubber Compound
Authors: Tuampoemsab Surakit
Published: August 2013

This research was to study the efficiency of amino acids such as alanine, asparagine and cysteine, which were applied as antioxidant both in green and vulcanized natural rubbers (NR) for STR5L and RSS3, comparing with the use of synthetic antioxidant, i.e., N-(1, 3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6-PPD). In the case of green NR, the rubber was mixed with antioxidants on a two-roll mill machine. Then, the specimens were shaped by hydraulic hot press. In the case of cured NR, conventional system of the sulfur vulcanization was carried out at 150°C for t95. Both green and vulcanized NRs specimens were subjected to heat aging test at 100°C for 24, 48, 72 and 96 hours. Another mixed green and cured NR were also tested the plasticity by Wallace plastometer and ozone resistance following ISO 1431/1, respectively. From the experiment, it was found that although plasticity retention index (PRI) of the green NR mixed with each type of amino acids were lower than those mixed with 6-PPD, alanine exhibits the best antioxidative property among all of amino acids. Considering at the reduction in tensile properties, stress at 200% strain of both raw STR5L and RSS3 mixed with 1 phr of 6-PPD after heat aging test were totally lower than those applied with alanine, asparagine, and cysteine. In addition, for the cured NR specimens, the tensile results are agreeable with the PRIs value of the raw NR. However, NR vulcanizates preserved with each amino acid inhibited the crack length under ozone test better than that mixed with 6-PPD. Anti-oxidative mechanism of amino acids as well as 6-PPD is available as chain breaking donors (CB-D) mechanism. This might be concluded that alanine can be applied as a natural antioxidant in the green and vulcanized NR better than other amino acids, but not for 6-PPD. Moreover, three types of amino acid can be used as a good antiozonant for the sulphur vulcanized NR.
Characterization and Properties of Nucleated Polylactide, Poly(butylene adipate-co-terephthalate), and Thermoplastic Starch Ternary Blend Films: Effects of Compatibilizer and Starch
Authors: Phetwarotai Worasak , Aht-Ong Duangdao
Published: August 2013

Biodegradable ternary blend films of nucleated polylactide (PLA), poly (butylene adipate-co-terephthalate) (PBAT), and thermoplastic starch (TPS) with the presence of nucleating agent and compatibilizer were prepared via a twin screw extruder. The effects of compatibilizer types and starch contents on the thermal, morphological, and tensile properties of these blend films were evaluated. Two types of compatibilizer (methylene diphenyldiisocyanate (MDI) and polylactide-graft-maleic anhydride (PLA-g-MA)) were used for enhancing an interfacial adhesion of the blends, whereas TPS from tapioca starch was added as a filler at various concentrations (0 to 40 wt%). In addition, talc and PBAT acted as a nucleating agent and a flexible polymer were fixed at 1 phr and 10 wt%, respectively. The results indicated that the thermal stability of the blend films was affected from the presence of compatibilizer and TPS. In addition, the tensile properties and compatibility of PLA, PBAT, and TPS blends were improved with the addition of compatibilizer compared to uncompatibilized blend films as evidenced by SEM results. Furthermore, the blend films with MDI gave higher mechanical properties than those with PLA-g-MA at all compositions. The water absorption of the ternary blend films was evidently increased when the TPS amount was increased; in contrast, tensile strength and elongation at break (EB) of these blend films were significantly decreased.
Development and Characterizations of Green Coupling Agent Coated Fly Ash Reinforced Recycled Polypropylene Matrix Composites
Authors: Sengupta Shubhalakshmi , Sain Sunanda , Ray Dipa , Mukhopadhyay Aniruddha
Published: August 2013

Two industrial wastes fly ash and polypropylene was used to develop novel composite materials. The fly ash (FA) particles were coated with stearic acid (SA) and palmitic acid (PA) in 1 wt% concentration. The surface coated fly ash particles were incorporated as filler in recycled polypropylene (RPP) matrix composites by melt mixing in 1:1 weight ratio. The composites were tested for their flexural properties, impact behaviour, dynamic mechanical properties and fracture surface analysis. Increase in flexural strength, modulus and impact strength was observed in the coated FA/RPP composites. 1wt % PA coated FA/RPP composites showed great increase in flexural strength. In 1 wt% SA treated FA/RPP (RFASA1) composites highest shift in glass transition to a higher temperature were found. Fracture surface analysis revealed efficient filler matrix interactions in the SA and PA treated FA/RPP composites. Thus, green, renewable, inexpensive chemicals like stearic and palmitic acid was found to be an effective coupling agent in FA/RPP composites.
Mechanical, Thermal and Morphological Properties of Poly(butylene Succinate) Filled with Bio-Functional Filler from Eggshell Waste
Authors: Buakaew Wanikorn , Yupaporn Ruksakulpiwat , Suppakarn Nitinat , Sutapun Wimonlak
Published: August 2013

In this work, calcium carbonate derived from eggshell, in a form of eggshell powder (ESP) with an average particle size of 13.96 μm, was used as bio-reinforcing filler for poly (butylene succinate), (PBS). The effect of ESP content on mechanical, thermal, and morphological properties of ESP filled PBS was investigated. The ESP/PBS composites were prepared at various ESP contents of 10, 20, 30 and 40 wt.%. It was found that incorporation of ESP into PBS matrix resulted in an improvement of Youngs modulus but it resulted in a decrease of tensile stress at break, yield strength and impact strength of the composite. In addition, increasing ESP content did not significantly influence decomposition temperature and melting temperature of PBS matrix. On the other hand, with increasing ESP content, crystallization temperature of the composite decreased but degree of crystallinity increased. Fracture surface morphology of the PBS composites obtained from scanning electron microscope indicated agglomeration and poor distribution of ESP within the composite matrix. Partial adhesion between ESP surface and PBS matrix was observed as well.
Fabrication of Porous Copper Layers by Two-Steps Process: Electrodeposition and Combustion
Authors: Muthusith Wongsakorn , Rodchanarowan Aphichart
Published: August 2013

Porous materials have been widely used since long ago because they possess important applications: acoustic, thermal insulation, building constructions, biomaterials, aeronautical application, etc. [. The development of porous materials is based on many materials. In a topic are develop the layer of materials by copper electroplating process. It is one of the oldest protective and decorative metallic coatings for steel and other basis metals [. Therefore, intensive studies were carried out to render copper electroplating suitable for different purposes. One of the most important baths used for electroplating copper was the electrolyte bath. The organic (PEG) additives are added copper sulphate plating bath to improve the quality of the porous layer. The electrolyte bath consists of the copper sulphate and PEG particle. Colloidal suspensions are often used as templates to fabricate porous layer material [. So an increment in porosity reduces the mechanical strength of porous materials. The polymer must have good adhesion with the polymer are determine the particle size and amount in electrolyte. Based on this process electroplating was used because the atomic are orderly arrangement and the atomic are packing than other process of porous materials. In the present study we report the preparation of porous layers materials on copper substrate by the electroplating process. The electrolyte solution system used as 35 g·l-1 Cu from CuSO4·5H2O in different conditions (current density and amount of PEG) and characterization of porous layer materials which process the appropriate morphology and chemical properties to be considered as feasible candidates for developing materials.
PSR-Based Ecosystem Health Evaluation Research in Yellow River Delta Wetland
Authors: Zhang Xiao Juan , Ju Chun Yan
Published: August 2013

This document established evaluation of the Yellow River delta wetland ecological health with PSR model, the DPSIR model and index system. Based on research of Yellow River delta wetland and relevant expert scoring, the paper selected 23 indicators, such as wetland pressure, state, response. all the index weights results was completed by analytic hierarchy process (AHP). Ecological health protection strategy was proposed according to the model.
A Meshless Manifold Method for Solving the Inverse Heat Conduction Problems
Authors: Gao Hong Fen , Wei Gao Feng
Published: August 2013

In this paper the meshless manifold method is used to obtain the solution of an inverse heat conduction problem with a source parameter. Compared with the numerical methods based on mesh, such as finite element method and boundary element method, the meshless manifold method only needs the scattered nodes instead of meshing the domain of the problem when the trial function is formed. The meshless manifold method is used to discretize the governing partial differential equation, and boundary conditions can be directly enforced without numerical integration in the problem domain. This reduces the computation cost greatly. A numerical example is given to show the effectiveness of the method.
The Developing of Medical System in Information Age
Authors: Lu Dong Xin , Liu Tao
Published: August 2013

This paper introduced the new technologies in information age. This article mainly introduces the concept and characteristics of mobile Internet, and introduced the concept of Internet of things. The paper introduced the development of medical system, including mobile medical, application of IOT in medical care system in the information era.
Study about the Relationship between TNF-Α-308G/A and Essential Hypertension in Specific Population-Taking Chinese Minority Zhuang in Guangxi as an Example
Authors: Pan Xing Shou , Lu Ke Xing , Li Tian Zi
Published: August 2013

objective: study the association between TNF gene and essential hypertension (EH) in Chinese minority Zhuang population. Method: select 170 normal as control group and 246 patients with EH as an object of study, use polymerase chain reaction - restriction fragment length polymorphism method to analyze polymorphic loci in the promoter region of TNF-α gene-308G / A allele, and genotype frequency distribution characteristics were analyzed, and the relationship between genetic susceptibility polymorphisms and EH was given.
Program Simulation of Cell Division and Differentiation Based on P-Code
Authors: Ma Jun , Fan Mei , Ma Yi De
Published: August 2013

By observing the process of hatch chickens, then combined with the modern biological knowledge and computer programming technology the paper proposed a hypothesis--coding sequence of DNA in cell is a set of program code sequence which includes instructions and data. And by making some program model, the paper simulated the two key procedures in life phenomena, namely cell division and cell differentiation. Then we can get some interesting ideas: If we look DNA coding sequence as program code sequence, the life phenomena is fully consistent with the principle of computer process . It is a macroscopic presentation of the life program in running status and whose code sequences were stored in DNA molecule chain. Combined with reflection calculation technology in the computer program model we also can come into an inference that Reflection technology is essential in the life process.
The Effects of Superfine Powder and Sintering Technique upon Properties and Applications of some Piezoelectric Ceramics
Authors: Li Quan Lu , Wu Jing , Zhang Yin Hong , Liao Ran , Cheng Hai Xia , Yang Qing Qing
Published: August 2013

This paper briefly reports on the improved properties and bettered applications of some piezoelectric ceramics (i. e. S-PZT, etc.) of ferro/piezoelectric community by means of bettering their technological process links, especial superfine grinding of powder of raw materials, and sintering technique of piezoelectric ceramics in them. These piezoelectric ceramic materials have obtained the better effect in their newly and widely applied aspects, such as, acoustoelectric transducing; electrical to mechanical to electrical transducing; acoustooptic effect; electrooptic technique, and, piezoelectric ceramics for high voltage generators, ignition and detonation purposes, and some original applications (e.g., combining the electrorheological fluids) etc.. As far as appropriate measure of the improving sintering and other technique processes in present work is concerned, they also have reference value to electronic ceramics of having similar manufacturing technological process, such as capacitor ceramics, resistance ceramics, magnetic ceramics, and oxide ceramic superconducting materials, etc..
Production of Paclitaxel Loaded PLA-Lecithin Ultrasound Contrast Agents
Authors: Yang Xiang Rui , Wu Shi Chao , Hou Zheng Qing , Wang Yan Ge , Jiang Qian
Published: August 2013

Drug loaded PLA (or PLGA) mirobubbles that combine properties of ultrasound imaging contrast agents and drug carriers suffer from low encapsulation efficiency and difficulty to destruction with diagnosis ultrasound. In this paper, a new type of multifunctional paclitaxel-loaded poly lactide-lecithin (PLA-lecithin) microbubbles has been developed with a method of ultrasonic double emulsion solvent evaporation (UDES) combined with lyophilization, and single-factor of ultrasonic time was studied to influence bubble size and drug loading efficiency. Bubbles were characterized to be well dispersed, with size of 300nm~2um, and showed increased ultrasound imaging on rabbit liver and heart after intravenous injection.
Numerical Simulation of Scouring Erosion Characteristics for Electric Submersible Pump Impeller
Authors: Chen Si , Wang Zun Ce
Published: August 2013

This paper shows the numerical simulation of the problem that electrical submersible pump impeller is vulnerable to particle impact erosion in the water under the condition of the water injection of the same wells in oil field. This simulation is based on Fluent of CFD software, which has built a geometric model of electric submersible pump impeller flow field, and given the calculation of the internal flow field of the impeller, and showed the solution of the motion track of the particles in the turbulent by the way of discrete phase model and random orbit, and calculated the erosion by the micro cutting model by particless, and compared the field test data with the simulation results which proved the reliability of numerical simulation method.
Development of Mathematical Modeling and Dynamics for Biofilms
Authors: Xu Xiang Rong , Wang Qi , Xu Hao , Li Liang Liang
Published: August 2013

Biofilm formation, structure and dynamics properties play an important role in the effective performance of biofilm wastewater treatment reactors. Biofilm models are commonly used as simulation tools in engineering applications and as research tools to study biofilm formation and dynamics. This paper briefly outlines the present and past status of research on biofilm modeling, dynamics and experimental results. Biofilms constitute a spectrum of dynamical microorganisms, whose interaction with the surrounding environment and thereby induced dynamics dominates the complex properties of the living microorganism. Modeling of biofilms began with a low dimensional continuum description first based on kinematics and translational diffusions; later, more sophisticated microscopic dynamical mechanisms are introduced leading to the anomalous diffusion and dissipation encountered by various components in biofilms. We classify the models into roughly four classes: the reaction-diffusion dynamics model, the Capdeville biofilm growth dynamics model, the Cellular automata (CA) model, and the Phase field biofilm dynamical model.
Anti-Fatigue Activity of Pecan Oil in Mice
Authors: Zhang Wei , Xu Jun Jie , Li Yan , Zhao Xing Yu , Wang Yan Chun
Published: August 2013

In the present study, we investigated the anti-fatigue activity in male Kunming mice with pecan oil using a forced swimming test. Mice were divided into four groups (three pecan oil administered groups and a control group). The control group was gavaged with distilled water and pecan oil administered groups were gavaged with pecan oil (10, 20 and 30mg/10g body weight /d). After four weeks, a forced swimming test was performed and the biochemical parameters related to fatigue were examined. The results suggested that pecan oil could extend the swimming time to exhaustion of the mice, as well as increase the tissue glycogen contents, while decreasing the blood lactate and serum urea nitrogen contents. This indicated that pecan oil had anti-fatigue activity and could elevate the exercise tolerance.
Study on Capillary Electrophoresis–Amperometric Detection Profiles from Propolis and its Medicinal Preparations
Authors: Peng You Yuan
Published: August 2013

Propolis is a resinous substance collected by honeybees from leaf buds and cracks in the bark of various plants, the pharmacologically active components in the propolis are flavonoids and phenolic acids and their esters. A simultaneous determination of flavonoids and phenolic acids from propolis and its medicinal preparations by capillary electrophoresis with electrochemical detection (CE-ED) was reported. Under the optimum conditions, the analytes could be separated in a 100 mmol/l borate buffer (pH=8.7) within 25 min. The response was linear over three orders of magnitude with detection limit (S/N=3) ranging from 1×10-7 g/ml to 5×10-7 g/ml for the analytes. This method has been used for the determination of flavonoids and phenolic acids from propolis and its medicinal preparations, and the assay result was satisfactory.
Microstructure and Oxidation Resistance of TiN Coatings
Authors: Nie Guo Zheng , Zhong Chun Liang , Luo Lan E , Zhou Ren Long , Liu Qiang
Published: August 2013

A series of TiN coatings were deposited by reactive magnetron sputtering with different target powers and different N2 flows. The microstructure and oxidation resistance of TiN coatings were characterized by X-ray diffraction (XRD). The hardness of the thin films was characterized respectively with the nanoindentor. The effect of target powers and the N2 flows on the microstructure, the hardness and oxidation resistance was studied. It was found that TiN coating deposited at different target powers and different N2 flows exhibits a cubic structure with (1 1 1) preferred orientations, and the hardness of TiN coatings is 1200. The oxidation resistance of the TiN coatings is approximately 500°C.
The Application of New High-Strength Polyester Fiber Flexible Net for the End Coal Mining Through
Authors: Duan Qi Tao , Shang Guo Yin , Xu Zhu He , Zhang Xi Wen
Published: August 2013

Shendong mining area hanging nets adopted metal mesh material in the traditional through of fully mechanized coal face. Whose defects were the high cost of materials, process cumbersome, great labor intensity and time consuming. Therefore, new high-strength polyester fiber flexible mesh material was introduced. Its main advantages are: light weight, tensile resistance and drag force strong, flame-retardant and anti-static, low cost, simple process, high efficiency, coal cutting speed. The construction technology process in detail were designed which contained flexible network transported, fixed, dropped and raised. The project was implemented in Shigetai Coal at the end of No.12401 mining face. Results show that from working face mounting network to smoothly through with only 40 hours, compared with the traditional metal net can save 44 hours and cost 480000 yuan.
Pressure Measurements of Aluminized Explosives Detonation Front with Different Aluminum Particle Size
Authors: Pei Hong Bo , Jiao Qing Jie , Jin Zhao Xin
Published: August 2013

Detonation pressure profiles in TNT/RDX and its mixtures with aluminum powders of different particle size have been studied with Manganin piezoresistance gauge. The measured detonation pressure accorded with the calculated detonation pressure. The results show that micrometer aluminum powders reacted with detonation at times of 0.5μs after the peak pressure. Aluminum powders did not react in the detonation zone, and introducing aluminum into explosive would reduce the detonation pressure. Compare with micrometer aluminum powders, nanometer aluminum powders reacted with detonation product more quickly.
A Review of Nanostructured TiO2 Application in Li-Ion Batteries
Authors: Wei Jiang , Liu Jian Xiong , Dang Yu Chun , Xu Kun , Zhou Yi
Published: August 2013

TiO2 has large potential ability in Lithium-ion batteries due to its high energy density and safety. The main reasons that limit the performance of TiO2 electrode is its low real capacity which caused by poor conductivity and other factors. Varying bulk TiO2 materials to nanoscale is believed a promising method as it could increase Li insertion sites, short the ions diffusion distance and enhance the kinetics. In addition, doping heterogeneous elements or compositing other conductivity materials could enable TiO2 to improve electron transfer ability. In this paper, we reviewed the electrochemical performance of some nanostructured TiO2 and analyzed the merits and weaknesses. Some challenges and perspectives for future research were also discussed.
Cold Model Experiments and Mechanism on Inclusion Removal by Ultrasonic Horn
Authors: Kang Shu Mei , Shen Ming Gang , Li Cheng Wei
Published: August 2013

The effect of power and tool rod position on inclusion removal was studied in the ladle refining cold model when the organic particles were used to imitate the inclusion. The mechanism of removing inclusion by cavitation bubbles was investigated. Both the transient bubbles and stable bubbles can promote the removal of inclusion; as the power increase, cavitation intensity increases, the number of cavitation bubbles increases, the collision probability of the cavitation bubbles increases with the inclusion, the efficiency of removing inclusion increases; as the wave source into the liquid is 1/2 H, the effect of removing inclusion is the best.
Flame Retardancy and Mechanical Properties of Brominated Flame Retardant for Long Glass Fiber Reinforced Polypropylene Composites
Authors: Luo Xing , He Min , Guo Jian Bing , Wu Bin
Published: August 2013

The effects of brominated flame retardant which composed of decabromodiphenyl ethane (DBDPE) and antimonous oxide (AO) on long glass fiber reinforced polypropylene (LGFPP) were investigated by means of limiting oxygen index (LOI), vertical burning (UL-94), thermogravimetry analysis (TGA), and mechanical properties. With the increase of DBDPE-AO content, the LOI values of DBDPE-AO/LGFPP composites increased from 21 to 27.6, and when the content of DBDPE-AO was 16wt%, the composites passed the V-0 rating in UL-94 testing. The experimental results showed that the brominated flame retardant improved flame retardancy of LGFPP, which was proved by the TGA testing. Whats more, the mechanical properties of composites even improved compared with pure LGFPP.
Theoretical Analysis for Part Body Multi-Parameter Thermal Deformation with Grey Modeling
Authors: Gong Peng , Yang Zhi Min
Published: August 2013

Thermal deformation is a common phenomenon of thermal effect which has great influence to the accuracy of measurement. It is well-known that the dimension of components changes in corresponding to the variation of physical temperature. Traditional thermal deformation theory and calculating formulas are approximately applicable to the components of low or general precision requirement, but not to the requirement of high precision or modern nano-scale field. Traditional linearity formulas of thermal deformation only correlate to their own dimensions, which offers no enough accuracy. In real world situation, thermal deformation of any dimension is the function of interrelated dimensions. To correctly constitute mathematic model which reflects the effects of the body parameter to the thermal deformation has great significance in both research and application communities. In this paper, by constituting GM(1,1) of linear thermal expansion and putting in GM(1,2) of the effects of the parameters of the components, we can prove the effectiveness and the feasibility of gray model in treating the thermal deformation of body physical parameters.
An Improved Experimental Equation for Precise Wave Spring Design Using Finite Element Method and Tests
Authors: Seo Tae Il , Lim Yong Seok , Park Jin Sung
Published: August 2013

This paper presents an improved experimental equation for representing wave spring behaviors. Wave springs were widely used for automobile automatic transmission and have to be precisely controlled. In fact an experimental equation was provided by mechanical design handbook. However the accuracy of the equation is not suitable. Therefore we tried to optimally modify correction factor K used in the equation without modifying the whole equation. For this different models of springs were manufactured to test and simulate. Theses results were analyzed and redefined correction factor K. To evaluate the proposed approach modified correction factor K was applied into various models and good agreement was obtained.
Optimization Analysis of the Shape of the Tobacco Harvester Recovery Knife Based on Matlab
Authors: Li Yan , Li Liang , He Hui Fan , Liu Jun
Published: August 2013

In order to obtain the optimal value of the shape of harvester recovery knife, this paper mainly using the Matlab to fit the wave curve of the recovery knife Based on Matlab recovery knife. Through the initial theory knife piecewise to fit out the function and achieve a optimization and the optimization results accurate the each parameter value and the result is near the initial theory knife which comply with the design purpose.
Miniature Rescue Manipulator Design Based on CATIA and ANSYS
Authors: Zhu Li , Sun Ji Ku , Tan Hai Dong , Yang Li Song
Published: August 2013

In order to shorten development cycle, expand the movement space, increase the flexibility of manipulator and reduce weight, parameterized model of manipulator has been established based on the elaborate analyses of the manipulator's structure characteristics and working mechanism. Statics simulation of stiffness has done under the load by using ANSYS, which can prove that the structure that meet the practical needs is rational. Total deformation can meet the requirements when calculation had been finished according to the results of simulation. At last we provide some theory references for further optimization of structure.
On the Emotional Knowledge of Materials Using in Stop Motion
Authors: Li Jie , Hu Wei Ping
Published: August 2013

Stop motion generally characterized by plasticine model,wooden puppet or other mixed material together displayed by a series of related motion pictures, also be called "material animation". Therefore, material is of vital importance in stop motion, it reflects the specialty of every certain role that played in the animation through its own outer texture till the inner character.This essay below is to illustrate some suitable material in making stop motion by analyzing the texture that derived from the sensation features of the materials available.
Creep Age Formability of Friction Stir Welded 2A12 Aluminum Alloy Structures
Authors: Liu Da Hai , Li Jun Chu , Chang Chun
Published: August 2013

To establish the efficacy of creep age forming of the integrally friction stir welded panels, feasibility experiments were first conducted on friction stir welded rib-web panels of 2A12 aluminum alloys by using a designed air-loading age forming setup, and then related forming characteristics were investigated by using a mechanical-loading setup on the samples with and without friction stir welding joints. Results show that good age-formability can be observed from friction stir welded rib-web parts after creep age forming. The surface springback of the integral parts decreases with increasing the aging time and temperature. For 2A12 aluminum alloy, under an aging temperature of 190°C, a relatively better forming effect and strength can be reached at an aging time of about 8h. Compared with the non-welded structures, the introduction of friction stir welding will inhibit forming rate and will shorten the time of creep age forming.
A Research on the Stresses Distributed over Pipe Insulating Joints
Authors: Yong Kang , Chen Nai Qin
Published: August 2013

By using CAD 3D modeling and structural statics of finite element analysis software ANSYS, the stress distribution of the insulating joint under different loads is obtained. The main factors are suggested, which influence the effects of the insulating joint, being base on the mechanical analysis of using computer software, and the ranges of concentrated stress are pointed out. These studies will help the insulating joint structure design, structure optimization and better applications.
Model of Precision Loss for the Precision Ball Screw
Authors: Xu Guang Yuan , Tao Wei Jun , Feng Hu Tian
Published: August 2013

Aiming at the precision retaining ability problems of the precision ball screw, the modeling on the motion precision loss process under load condition is studied. The mechanics and deformation of the interface of ball and groove under load condition is analyzed by using the classical mechanics and Hertz contact theory, also a precision loss model for precision ball screw is established based on the dynamic characteristics analysis of the ball screw. Regardless of the external interference, the impact of various factors on the precision loss is analyzed and calculated.
Analysis on Dynamic Balance of Suspended Basket in Centrifugal Test with Conglobate Container
Authors: Chen Sheng Lai
Published: August 2013

Along with the development of environment test technology, experiments of containers with not full liquid has been possible to be carried out. The particularity is that the liquid surface will slope as the rotate speed of centrifuge increasing, so that, the rising of liquid centroid causes the change of centrifugal moment of inertia which is generated by the liquid. On the other hand, the balancing mass is invariable. So unbalanced torque moment acting on the trunnion of suspended basket is brought. It will cause accident or damage of equipment. The method of analyzing dynamic balance for experiments of conglobates container with not full liquid is proposed. The function of unbalanced moment and acceleration can be educed. The optimal project of counter-balance mass is determined by mathematical solution of function maximum and using figure of function. The simplified formula is concluded.
Effects of Process Parameters on Elongation during Hot Power Backward Spinning for 7075 Cast Aluminium Alloy Tube
Authors: Zhang Ran Yang , Wang En Le , Zhao Gang Yao , Tu Shan Jun , Guo Zheng Hua
Published: August 2013

To obtain the effects of parameters on elongation of 7075 cast aluminium alloy tube in hot power backward spinning accurately, a method to accurately describe the elongation of the spun tube has been proposed. Combined with the FE analysis, the change regularities of elongation with the variation of process parameters were obtained. The results show that the elongation of the spun tube increases gradually with the increase of preheating temperature, and the trend becomes larger and larger. The elongation sharply decreases firstly, and then tends to a stable value with the increase of roller feed rate. With the increase of roller fillets radius, the elongation increases gradually, but the trend becomes weaker.
Fatigue Life Prediction Based on Damage Line under Variable Amplitude Loads
Authors: Jiao Yu Qiang , Lu Xi
Published: August 2013

A novel method based on damage line is put forward to improve the prediction accuracy of fatigue life under variable amplitude loads. According to fatigue strength change before and after the damage line, mechanical parts service processes are divided into undamaging and damaging process. Undamaging process life, damaging process life and fatigue life are calculated by the novel method. The prediction results are closer to the actual situation. In order to simplify calculation, the damaging process is regarded as linear process. The results are more accurate than traditional fatigue life prediction method. The novel method can be widely used in light-weight constructions, reduction of time-to-market period, product safety, reliability design and so on.
Exploration and Implementation of the Fixed Telephone Cluster Management System Based on Struts Framework
Authors: Xu Fang Zheng , Xiao Ying , Li Qi Qi
Published: August 2013

A fixed telephone cluster management system was investigated in this paper. To meet the development demands of fixed telephone service and management, we designed a fixed telephone cluster management system based on browser/server structure which is developed by the MVC (Model-View-Controller) design pattern. This system attains independent inquiry and management for personal fixed-phone information and it has advantages over scalability, portability and maintainability. As a result, this system can applied in fixed telephone management for the corporation, the school, and so on.
Research on Uncertainties Influenced the Mixed-Model Assembly Line Balancing
Authors: Zheng Yu Jie , Hou Kai Hu , Zhong Jin Yuan , Liao Wei Zhen
Published: August 2013

For a large number of uncertainties such as suppliers, customer demand and different external uncertainties, as well as workers, machines, environment and other internal uncertainties, they affects the mixed-model assembly line balancing. And these uncertainties can be turned into the changes of demand, operation time and workstation availability, which are relevant to mixed-model assembly line balancing. By solving the three factors influence on the balancing, these uncertainties influence is processed. This paper provides a way to process uncertainties influence on the mixed-model assembly line balancing.
The Kinematic Simulation of Micro-Miniature Rescue Robots Manipulator Based on CATIA and ADMAS
Authors: Liu Tie Jun , Wang Yi Long , Zhang Wei Jun , Jiang Dong Mei
Published: August 2013

In order to improve the designing efficiency of micro-miniature rescue robot and predict its function, on the basis of studying the working theories of micro-miniature rescue robot research deeply. Constructing the three dimensional parametric model of micro-miniature rescue robots manipulator for applying the CATIA, importing it into the ADAMS which is a mechanical dynamic simulation software through SimDesigner between CATIA and ADAMS, conducting the subsequent constraint and driving addition to finish the kinematic analysis of the structure of the micro-miniature rescue robots manipulator. The kinematic simulation analysis which shortens the researching period, improves the designing quality as well as lays a good foundation for the structures deeper study and practical application. By means of analyzing the simulation result, getting the data which is agree to the theoretical calculation, proving the rationality and correctness of building the micro-miniature rescue robots mechanical manipulators model.
Mechanical Diagnosis Based on Similarity Extraction of Time Series
Authors: Lv Chun Jie , Yao Yong Yu
Published: August 2013

The intelligent diagnosis emphasizes the processing method of knowledge of the historical data. The capability of an intelligent diagnosis system depends on the knowledge possessed by the system, especially by the specific knowledge in application. Currently, most of the important equipment have their own the inspection systems. With the help of these systems, plenty of historical data can be collected in real time. This paper discusses the possibility of the application of similarity extraction and pattern discovery of time series in fault diagnosis by using these historical data, presents the method of time series feature extraction and pattern matching, and advances the possibility of data clustering and pattern discovery based on dimension reduction.
The Research of Neural Network and EMD Methods Used in the Prediction of Machine Running State
Authors: Xie Shi Man , Wang Xiao Le , Xuan Zhao Yan , Cai Pei , Yang Fei
Published: August 2013

The paper puts forward a method of ventilator running state prediction which is based on EMD and Neural Network, which aims at ventilators non-stationary vibration signals. First of all, vibration data are decomposed into eight intrinsic mode signals and one residual quantity by EMD. Then Neural Network is adopted to predict the decomposition components and reconstruct them. Finally, the final prediction results are achieved. In this paper, the ventilator vibration signals of Tangshan Iron and Steel Group Coking Plant from March 1, 2012 to July 1, 2012 are used as the research data. Comparative study method is adopted to compare this prediction method with direct Neural Network prediction in terms of results, which shows that this method has better accuracy.
Assessment Monitored Natural Attenuation Rate in a Petroleum Contaminated Shallow Aquifer
Authors: Lv Hang , Lin Guang Yu , Su Xiao Si , Liu Ming Yao , Wang Nai
Published: August 2013

Contamination of groundwater and soil by petroleum hydrocarbons is a widespread environmental problem. In order to quantify the potential of natural attenuation of groundwater at a petroleum contaminated site. The total petroleum hydrocarbons (TPH) concentrations of 11 rounds were collected during the 1 year monitoring period, and the mass flux technique is used to calculate the attenuation rates. The calculated attenuation rates are between 0.0046-0.0064d-1, which indicating the time to achieve the remediation goal for the contamination site is possible within 3 years by natural attenuation alone.
The Design of Multiplexer for On-Line Partial Discharge Monitoring System
Authors: Yang Yuan , Bi Jian Gang , Gong Yan Peng , Yang Ning
Published: August 2013

Partial discharge is an important content of insulation monitoring of high-voltage power equipment, which generates high-frequency signals and real-time monitoring data is of great quantity. Simultaneous detection of multi-channel signals faces technical difficulty, and of high cost and poor reliability, it can also cause unnecessary waste of resources. In accordance with the characteristics and needs of partial discharge monitoring system at substation site, the concept of time-division multiplexing technology in communication technology is adopted into the multi-channel signal acquisition and measuring system, which using multiplexer MAX4638 and virtual instrument. The designed multiplexer for the partial discharge monitoring overcame several shortcomings, such as hardware resources consumption, poor reliability and high cost in multi-channel synchronous acquisition. By using of polling method to achieve one detection device for the time-sharing acquisition and processing of multiple devices or signals, this device can greatly enhance the on-line monitoring system economically and practically in the field application.