bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis on the Contact Mechanics between Tip and Sample in Atomic Force Acoustic Microscope Method
Authors: Zhang Gai Mei , Yang Li Ping , Qiang Chen , Wei Yuan , Lu Jian Dong , Jiang Dong Sheng
Published: September 2013

Atomic force acoustic microscopy (AFAM) is a technique combining the atomic force microscope (AFM) and ultrasonic technique, where the cantilever or the sample surface is vibrated at ultrasonic frequencies while a sample surface is scanned with the sensor tip contacting the sample. At a consequence, the amplitude of the cantilever vibration as well as the shift of the cantilever resonance frequencies contain information about local tip-sample contact stiffness and can be used as imaging quantities. It has been demonstrated to be a powerful tool for the investigation of the local elastic prosperities of sample surface. The sample is tested in the contact mode, the resonant frequency of the cantilever is measured, by which the contact stiffness is calculated based on the model of vibration of the cantilever, and then the elastic property of sample is evaluated according to the contact theory. Therefore, the contact model has an important impact on the calculation of elastic modulus. This paper analyzes the contact model between the AFM probe and the sample, and it is investigated based on finite element method (FEM) that the results of the test are affected by parameters.
Assessment of Heat Resistant Concrete of Magnesia-Phosphate
Authors: Zhang Lin Chun
Published: September 2013

In this paper, we choose heat resistant material wollastonite and corundum to get the concrete which has heat resistance up to 600 centigrade. SEM reveals that at the temperature of 400 centigrade and 600 centigrade, the material is very dense. But when the temperature gets 800 centigrade and 1000 centigrade, the SEM reveals cracks. The refractory concrete made by magnesium potassium phosphate as the binder and wollastonite and corundum as aggregate has short setting time, early strength and rapid hardening. And it is suitable for emergency repair materials for the kiln.
Durability of Concrete Containing Wollastonite and Fly Ash
Authors: Zhang Lin Chun
Published: September 2013

A series of experiments were carried out to investigate the effect of wollastonite and fly ash combination on the compressive strength, flexural strength, modulus of elasticity, coming off amount, loss percentage of dynamic elastic modulus as well as surface scaling of concrete. The studies show that the effect of mixing wollastonite and fly ash can reach excellent mechanical and durability performance. The effect of mixing wollastonite and fly ash improve the mechanical and durability is better than mixing fly ash alone. The concrete mixes containing wollastonite and fly ash indicated that wollastonite addition 15% was found advantageous in improving concrete quality.
Effect of Cathodic Protection Systems with Zn-Mesh Sacrificial Anodes on Reinforced Concrete Structures in an Accelerated Marine Environment
Authors: Jeong Jin A , Jin Chung Kuk
Published: September 2013

In the present study, corrosion and cathodic protection (CP) characteristics of concrete piles exposed to marine environments such as marine bridge columns or pier structures were evaluated under simulated conditions. The accelerated environmental tests were carried out at an elevated temperature (40°C) and a high chloride concentration (15%). The protection potential of CP systems with Zn-mesh sacrificial anodes applied to piles was inversely proportional to the water content in the concrete. When the CP system was applied after corrosion initiation and propagation (CProt), the protection current density was higher than when the CP system was applied at the beginning of structural construction (CPrev). However, the four-hour depolarization potential was higher in the latter case than in the former. In addition, it was found that even though the current density of the CPrev system was relatively lower than that of the CProt system, the CPrev system was also able to prevent corrosion. Consequently, both CProt and CPrev systems are very effective at preserving reinforced concrete structures, especially in marine environments.
Microstructures and Mechanical Properties of Magnesium-Lithium Alloys by Homogenizing Treatment and Thermal Process
Authors: Jia Yu Xin , Huang Jin Liang , Feng Jian , Yu Shen Dong
Published: September 2013

s: The effects of homogenizing treatment and thermal process on microstructures and mechanical properties of Mg-12Li-0.5Al-1Zn alloy (LAZ1201) were studied. The results show that the grains of LAZ1201 alloy are refined evidently and the dynamic recrystallization happens during thermal process. The tensile strength and elongation of the as-cast LAZ1201 are 138MPa and 38%, respectively. In this paper, the best mechanical properties with a maximum tensile strength of 166 MPa and elongation of 50% were achieved by 30% rolling.
Structural, Magnetic, and Transport Properties of La0.62Sb0.38MnO3 Ceramic
Authors: Wang Qiang , Duan Ping , Wang Ji You , Chang Lei , Zhao Jin Liang , Kong Le , Yuan An Juan
Published: September 2013

The polycrystalline La0.62Sb0.38MnO3 sample has been prepared by the solid-state reaction method. Structural, magnetic and electrical transport properties have been researched. X-ray diffraction analysis confirms the hexagonal crystal symmetry. Magnetization measurements indicate La0.62Sb0.38MnO3 experienced from paramagnetic to ferromagnetic state transition with decreasing temperature at about 225 K. Resistivity dependences on temperature exhibit metal-insulator transition (MIT), and the maximum magnetoresistance (MR) ratio is about 33 % at temperature of 189 K and magnetic field of 2 T.
Optical Properties of Water-Soluble Er-Doped ZnS Quantum Dots Synthesized by a Hydrothermal Process
Authors: Li Gang , Li Li Hua , Yang Liu Shuan , Huang Jin Liang
Published: September 2013

Er3+:ZnS quantum dots(QDs) were synthesized by hydrothermal process. The structure, morphology and luminescence properties were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. It was found that the Er3+:ZnS QDs are zinc blende structure with an average particle size of about 8 nm. In PL spectra, The broad peak of ZnS NCs located at 400nm was commonly assigned to sulfur vacancies. The intensity of exciting peak and emission peak at of Er3+:ZnS QDs decreased with doping concentration increasing.
Preparation of PANI Nanotubes by Template Electrosynthesis
Authors: Li Bao Song , Zhang Wei Wei
Published: September 2013

Polyaniline nanotubes were prepared by electrochemical polymerization polyaniline within the pores of AAO templates and have been open on one ends. The outside diameter of these tubes is determined by the pore diameter in the template used and that the length of the tube is determined by the thickness of the template. Influencing factors include the polymerization potential, current, scanning rates and numbers, solutions. The characterization of the resulting materials was carried out by UV-vis, X-ray diffraction, cyclic voltammetry, scanning lectron microscopy and conductivity measurements.
Synthesis and Properties of P2O5-SnO2-ZnO Penetrated into Silica Aerogel Matrix by Sol-Gel Technique
Authors: Fang He , Wu Zhu Ying , Huang Yu Hong , Xiong Xian Wen , Zhang Rui Zhu , Ma Qiu Hua , He Zhu , Li Rong Chun , Zhang De Yin , Zhou Xiang Yiang
Published: September 2013

This work demonstrated the synthesis of SiO2-P2O5-SnO2-ZnO quaternary porous aerogel by sol-gel followed supercritical carbon dioxide drying, starting from tetraethoxysilane (TEOS) as precursor for SiO2and triethyl phosphate, tin (iv) chloride pentahydrate and zinc nitrate hexahydrate as precursor for P2O5-SnO2-ZnO. It has been recorded that prepared P2O5-SnO2-ZnO sol was added to silica sol, then formed the quaternary aerogel by base catalyst. The microstructure, morphology and properties of the quaternary aerogel were studied by TG/DTA, FTIR, solid-state29Si NMR, BET, scanning electron microscopy (SEM) measurement and BJH nitrogen gas adsorption. The silica aerogels tetrahedral subunit structure and the influence of the loaded oxide have been observed. The results indicated that the quaternary aerogel exhibited average pore diameter of 14.15 nm, cumulative pore volume of 2.31 ml/g, the specific surface area as high as 796.29 m2/g and bulk density of 0.275g/cm3. There were four types of Si (O1/2)4tetrahedral unit structure in the quaternary aerogel. From this study, different chemical bond of P2O5-SnO2-ZnO penetrated into the silica network structure.
The Influence of Interactions between Polyethylene Glycol and Graphene Oxide in Shape-Stabilized PCMs on their Phase Change Behaviors
Authors: Wang Chong Yun , Wang Wei , Li Guo Ling , Li Wei , Tian Wen Huai , Li Xing Guo
Published: September 2013

Two types of shape-stabilized phase change materials (PCMs) based on polyethylene glycol (PEG) and graphene oxide (GO) were prepared by two different methods, including a simple blending process and esterification reaction. The interactions between PEG and GO for the blending product (PEG/GO PCMs) is physical and weak, while for the grafting product (PEG-g-GO) is chemical and strong. In the PEG-g-GO composites, almost all PEG segments were restricted due to the strong chemical interactions and therefore no endothermic peak was observed in the DSC curve. As the interactions between PEG and GO in the PEG/GO composites is weak and physical, the phase change enthalpy of the PEG/GO composites is as much as 163 J/g when the PEG content is 90 wt%. The result indicates that the shape-stabilized PCMs with weak physical interactions are more proper for thermal energy storage than that with strong chemical interactions.
The Optimization of Pb(II),Cu(II),Zn(II) and Cd(II) Ions Removal by Micro-Electrolysis Using Response Surface Methodology
Authors: Xu Jian Ping , Huang Zhi , Gao Yan Ling
Published: September 2013

In this study, the Box–Behnken design matrix and response surface methodology (RSM) have been applied in the experiments to evaluate the interactive effects of four most important operating variables: pH (2.0–4.0), temperature (30–40°C )，iron/carbon ratio（1/2–3/2）and iron carbon amounts (2-4) on the removal of Pb (II), Cu(II)，Zn (II) and Cd (II) ions in acid mine drainage with micro-electrolysis (ME) . The total 29 experiments were conducted in the present study for the construction of a quadratic model. The independent variables have significant value 0.0001, which indicates the importance of these variables in the ME process. The values of “Prob > F” less than 0.0500 indicate that model terms are significant for the removal of Cr (VI), Ni (II) and Zn (II) ions. The regression equation coefficients were calculated and the data fitted to a second-order polynomial equation for removal of Pb (II), Cu(II)，Zn (II) and Cd (II) ions with ME.
Experimental Study of the Porous Plate Hydrodynamic Cavitation Device and Removal the Algae in Water
Authors: Deng Jie , Zhou Jun
Published: September 2013

Design a practical and effective hydrodynamic cavitation experimental apparatus, the establishment of cavitation radical scavenging method, the use of methylene blue to study the relationship of the hydroxyl radical production and cavitation cavitation intensity, the study of the various factors of cavitation radical production, and to explore optimal cavitation strengthen the conditions. Hydrodynamic cavitation kill algae has some effect, there will be varying degrees of decline in the concentration of algae. The hydrodynamic cavitation algae suppression and damaging effects.
Research on Recycling and Utilization of Waste Ink
Authors: Yan Fang , Chen Guang Xue , Zhu Ke Yong , Yao Rui Ling
Published: September 2013

With the development of printing industry, more and more waste ink appears. Currently, most wastes were dealt with by incineration or landfill, which brought great pollutions to the environment. Based upon co-boiling distillation, grinding, and toning, a method can convert waste ink into black for reuse, which reduces environmental pollutions from wastes.
The Investigation of the Deicing Salt Effect on Soil in Beijing
Authors: Yue Guan Hua , Zhang Jia Hua , Yu Ying Han
Published: September 2013

In this article, the classification and effects on environment of deicing salt are described, and the total components of two sorts of deicing salt commonly used in Beijing are analyzed, then we collected soil samples in Beijing’s main roads and areas, determined the soil pH and electrical conductivity, the results show that the value in roadside soil significantly higher than that in background. In addition, the soil pollution discipline in Beijing was studied.
Comparison of Two Designs of Differential Planetary Gear with Differential in Output
Authors: Jablonický Juraj , Hujo Ľubomír , Tkáč Zdenko , Kosiba Ján , Žikla Anton
Published: September 2013

The goal of the presented contribution is a comparison of two variants of differential mechanical planetary gearboxes. The designed variants of differential gearboxes are characterized by gear shifting under load. Reflected depending on the variable gear may be a change of gear ratios, either stepped or continuously. The results of kinematic analyses of both variants of differential planetary gearbox with differential in output are shown in tabular and graphical form
Impact of Insufficient Cleaning on the Quality of Molybdenum Layer Applied by Thermal Spraying
Authors: Bujna Marián , Prístavka Miroslav , Kaplík Pavol
Published: September 2013

Thermal spraying influences several physical and chemical properties of the coating surface. The most important of them are hardness, density, porosity, corrosion resistance and adhesion. This technology of surface treatment of material is often used for its high degree of hardness. Hardness and erosion resistance are the parameters that need to be achieved particularly in working conditions where there is excessive component wear. In this paper, we deal with the impact of purifying on the quality of molybdenum layer. Insufficient cleaning may result in a poor quality of the sprayed layer. Our aim is to measure and analyse the quality of molybdenum layer thickness applied by thermal spraying after insufficient cleaning.
Application of Six Sigma Methodology in Production Organization
Authors: Korenko Maroš , Uhrin Peter , Kaplík Pavol , Földešiová Daniela
Published: September 2013

In the last years and also due to today's economic situation and crises in the world, each organization is looking for a continuous improvement of processes and business performance. The major task of each production organization or services is the saving of money, which is lost because of scrap, long cycle times, wrong process maps and inventory differences. The goal of this article is to describe the implementation of Six Sigma in a production organization focusing on the production of interior parts for the automotive industry. During the summer time, there was delamination between thermoplastic foil and plastic substrate, which caused increasing of scrap, additional substandard works as well as the risk of quality complaints from customer. Six Sigma and DMAIC cycle were used to find root causes and to implement permanent corrective actions to remove this kind of problem from production.
Synthesis, Characterization and Dielectric Properties of Mn(2-x)ZnxP2O7 Ceramics
Authors: Sutapun Manoon , Muanghlua Rangson , Niemcharoen Surasak , Vittayakorn Wanwilai C. , Seeharaj Panpailin , Vittayakorn Naratip
Published: September 2013

Manganese zinc pyrophosphate (Mn(2-x)ZnxP2O7 when x = 0.0, 0.5, 1.0, 1.5 and 2.0) ceramics were fabricated by conventionally mixing oxide using the normal sintering method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Raman spectroscopy and scanning electron microscopy (SEM). The XRD results indicated that synthesized Mn(2-x)ZnxP2O7 systems have a pure monoclinic phase without the presence of phase impurities. The lattice parameters and crystalline sizes analyzed from XRD data were changed depending on the amount of added Zn2+ ion concentration in the Mn2P2O7 structure. The FT-IR and Raman results showed the fundamental vibrations of P2O74-ion and Mn-O or Zn-O, which confirmed the Mn(2-x)ZnxP2O7 formation. In addition, dielectric stability of temperature and frequency was observed in the composition, x = 1.0, with a dielectric constant value of 11.5 at 1 MHz.
Preparation and Characterization of Cu-Doped Zno Sol-Gel Derived Optical Thin Films
Authors: Chongsri Krisana , Aunpang Siriwattana , Techitdheera Wicharn , Pecharapa Wisanu
Published: September 2013

In this work, we report the preparation of Cu-doped ZnOthin films by sol-gel method based on zinc acetate dihydrate (CH3COO)2Zn·2H2O, Copper acetate dihydrate Cu3(CH3COO)2·H2O) and diethanolamine (HN(CH2OH)2, DEA). The precursor solution was prepared at various Cu composition ranging from 2-20 wt%. All films were spin-coated on borosilicate substrates for several coating repetition followed by annealing process at 550 °C for 4 h in an ambient air. The structural properties of the films were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD results indicate the domination of hexagonal wurtzite structure of ZnO with noticeable alternation in the XRD peak intensity upon Cu doping content. SEM results revealed the grain size shape and surface morphologies of as-prepared samples. Crucial optical properties of as-prepared films were scrutinized from their UV-Vis transmission spectra. The films are highly transparent in the visible region with more than 90 % transparency within 380 nm to 800 nm. Their corresponding band gaps indicate significant red shift with increasing Cu doping content. Overall results suggest that Cu additive play a vital role on relevant optical properties of ZnO that can be adjusted to meet the requirement for practical optoelectronics applications.
Thermoelectric Properties of Sn2+-Substituted CuFeO2 Delafossite-Oxide
Authors: Ruttanapun Chesta , Jindajitawat Phumin , Thowladda Warawoot , Neeyakorn Worakarn , Thanachayanont Chanchana , Charoenphakdee Anek
Published: September 2013

This study aims to investigate the effect of the Sn2+-substituted into the CuFeO2delafossite on thermoelectric properties in the Sn content of x = 0.03, 0.05. The CuFe1−xSnxO2samples were synthesized by solid state reaction. The crystal structure was characterized by XRD, TGA, XPS and the thermoelectric properties were measured in the range of 300 to 960 K. The Seebeck coefficient display positive sign in all temperature range and the XPS show the stable Sn+2state as confirming the Sn-doped CuFeO2playing p-type conductor. The Sn2+-substituted supports the mixed valency Fe3+/Fe4+state in transition octahedral oxide of FeO6layer enhancing Seebeck coefficient. The high Seebeck are appeared in content of x=0.03 which are 280 to 340 µV/K in the range of 300 to 800 K. The experimental Seebeck corresponds to the prediction formula at high temperature. Totally, the maximum Power Factor is 2.30×10−4W/mK2occurring in the CuFe0.95Sn0.05O2at 860 K which is higher than that value of the undoped-CuFeO2in 4 times. These support that the Sn-substituted CuFeO2delafossite enhancing thermoelectric properties.
Thermoelectric Properties of PbTe
Authors: Phewphong Sunti , Seetawan Tosawat
Published: September 2013

The PbTe has been prepared by pressing and annealing method in argon atmosphere. The PbTe sample was obtained single phase and cubic structure. The Seebeck coefficient, the electrical resistivity, thermal conductivity measured by steady state method and evaluated dimensionless figure merit at room temperature. The values of Seebeck coefficient, the electrical resistivity, thermal conductivity and dimensionless figure merit are about -260 µV/K, 3 mΩcm, 0.5 W/m K and ~ 0.35 respectively at 420 K.
Reinvestigation the Thermal and Electrical Transport Properties of Tl7Sb2
Authors: Charoenphakdee Anek , Harnwangmuang Adul , Seetawan Tosawat , Ruttanapun Chesta , Amornkitbamrung Vittaya , Kurosaki Ken , Yamanaka Shinsuke
Published: September 2013

The authors examined the thermal and electrical transport properties of Tl7Sb2 at temperatures ranging from room temperature to 400 K. The crystal system of Tl7Sb2 is cubic with the lattice parameter a = 1.16053 nm and the space group is Im3m. The polycrystalline samples were prepared by melting stoichiometric amounts of thallium and antimony. Although, usually the thermal conductivity of thallium compounds is very low (<1 Wm-1K-1), that of Tl7Sb2 was relatively high (~13 Wm-1K-1 at room temperature). This is because of the large electronic contribution to the thermal conductivity.
Immobilization of Silk Fibroin as Scaffold for Cell Culture by Plasma Grafting Polymerization
Authors: Tunma Somruthai , Kanjai Eakkarach , Nuandee Jompak , Boonyawan D.
Published: September 2013

According to the low efficiency of cell attachment and proliferation on commercial polystyrene (PS) dish, scaffold with porous structure on the polystyrene dish is required to improve the cell attachment and proliferation efficiency on the dish. The scaffold with porous structure was fabricated from a solution of powdered silk fibroin by plasma grafting polymerization technique. Argon plasma was utilized by a 13.56 MHz capacitively coupled discharge (CCP) reactor at working pressure of 100 mTorr. Rf power, plasma treatment time, and the cycle of grafting on the dish were varied. The proper treatment time and rf power set to 10 minutes and 100 W, respectively. The experimental results showed the uniformly and highly distributed of porosity of fibroin scaffold on the PS dish surface. The Ar-treated dish had lower UV-Vis absorbance than the untreated dish indicating the efficiency of grafting between fibroin structure and treated PS surface is better than the untreated surface. The absorbance spectra of phanyalanine at 280 nm affirmed the success of the fibroin amino acid grafting to PS aromatic structure.
Impedance Spectroscopy Studies of DCM Doped Alq3 Organic Material
Authors: Keeratithiwakorn Poonnapa , Onlaor Korakot , Thiwawong T. , Tunhoo B.
Published: September 2013

In this work, we report on the frequency-impedance characteristics of dye-doped organic material. The device structure is glass substrate/indium tin oxide/DCM:Alq3/Aluminum 100 nm. The influence of doping concentraion has been investigated by impedance spectroscopy. The impedance characteristics of the dye-doped organic material can be modelled by simply adopting the conventional equivalent circuit with the simple combination of resistors and capacitor network. The variation of bulk resistance with applied bias voltage as a result of the Space Charge Limited Conduction (SCLC) mechanism for charge conduction.
Effect of Substrates on Preparation of Dissolved PMMA in DMF Solution Used as a Dielectric Layer in Otfts
Authors: Tippo Tossapol , Thanachayanont Chanchana , Junin Chabaiporn , Prichanont Seeroong , Hietschold Micheal , Thanachayanont Apinunt
Published: September 2013

Dissolved Poly (methyl methacrylate) (PMMA) in Dimethylformamide solution was fabricated as thin films on different substrates, glass, poly (ethylene naphthalate) and Si wafer, using spin coating technique. The effect of different substrates on electrical performances of the PMMA films was investigated. For an acceptable organic thin-film transistor (OTFT) performance, uniform thickness with low defect density of the PMMA thin-films was required. A parallel plate capacitor structure was used to test electrical properties of the PMMA dielectric layers. Good dielectric properties were obtained on glass and PEN at film thicknesses of 95 nm. An optimal condition for the OTFT preparation was used to fabricate an OTFT with the PMMA dielectric layer on glass substrate. Measured results showed that the OTFT achieved a mobility of 0.16 cm2/V.s, a threshold voltage of -3.6 V, and on/off current ratio of 1×105.
Study of Antifungal Activities of CuO/ZnO Nanocomposites Synthesized by Co-precipitation Method
Authors: Phiwdang Kankanit , Phensaijai Mongkol , Pecharapa Wisanu
Published: September 2013

In this work, series of CuO/ZnO functional nanocomposites were synthesized through co-precipitation method using CuCl2×H2O and ZnCl2as starting materials with various molar ratio of copper:zinc, followed by annealing process at 600 °C for 2 hours to obtain CuO/ZnO nanocomposites. The structures of the composites were analyzed using X-ray diffraction and field emission scanning electron microscopy. For XRD result, diffraction peaks of the composites reveal the well-crystalline characteristic indicating the mixture phase of CuO and ZnO. SEM results show different morphologies of CuO, ZnO and Cu-Zn oxide nanocomposites appearing in quasi spherical structure.The composites were used for antifungal activity via agar disk diffusion method. It is found that the composite with certain ratio of Cu:Zn exhibits superiority in partial inhibition of strainAspergillusflavusTrichodermacomparing to either pure CuO or ZnO.
Flotation Responce of the Refractory Yangla Copper Oxide Ores with Hydroxamate Collectors
Authors: Xiong Fei , Li Yan Jun , Zhang Zhong Hui , Lan Yao Zhong
Published: September 2013

To establish the flotation response and suitability of the collectors, series of bench-scale flotation tests are conducted for the refractory oxide copper ores obtained from Yangla Mine in Yunnan province. A simple xanthate (PAX) is used as the sulphide collector and a chelating reagent of hydroxamate AM28 as the oxide collector. It is found and confirmed by mineralogical examination that AM28 successfully recovered all the discrete copper oxide minerals from the Yangla ore. The flotation tests show that the overall copper recovery is affected due to the minerals copper associated with goethite which is not amenable to flotation. The average copper recovery from the rougher tests is 38.4% with a concentrate grade of 3.19%. The additional cleaning flotation can increase the Cu grade in concentrate further.
Polyaniline-Attapulgite Composites Based on Ionic Liquid: Preparation and Characterization
Authors: Feng Hui Xia , Chen Jiao , Tan Lin , Zhang Jian Qiang
Published: September 2013

Using 1-methyl-3-alkylcarboxylic acid imidazolium chloride ([CMMICl) ionic liquid (IL) as synthetic environment, CMMIm-PANI and CMMIm-PANI@ATP composites were successfully prepared via in situ chemical oxidation polymerization. The chemical characterization of the material before and after ATP adding was performed by means of Fourier transform infrared spectroscopy (FTIR). The morphology of the coatings was observed employing scanning electron microscopy (SEM). The results are further indicated that PANI which coated on the surface of rodlike crystal ATP helped the formation of conductive path among ATP crystals which overlapped each other. The four probe conductivity apparatus was used to analyze the electronic properties of the composites. The conductivity of CMMIm-PANI@ATP and CMMIm-PANI are 10 S/cm and 1.8 S/cm respectively, which clearly showed that the introduction of ATP in composite makes the conductivity increased largely. In addition, thermogravimetric analysis shows that the thermal stability of CMMIm-PANI/ATP composites was enhanced and these can be attributed to the effect of coated ATP as barriers for the degradation of PANI.
Fiberboard with PVC Coated Plastic Research
Authors: Wang Ju Wei
Published: September 2013

PVC film facing material has the real wood grain feeling, high wear resistance strength, soft gloss and widely used in wooden furniture surface decoration [. But PVC film and plank have low degree of adhesive; water will open in bubble shortcomings. And butyl acrylic, vinyl acetate copolymer emulsion and have good adhesive sex and peel strength, and it has better cohesion[.This article describes the modified acrylic adhesive vinyl acetate synthesis methods and performance characteristics that affect the performance of some of the major factors, namely raw material ratio, the amount of initiator, polymerization temperature, add water, put forward various factors on product performance cause and effect, and how to improve product performance were discussed. Analysis of the response characteristics of acrylic ester, acrylic acid ester described the main components of raw materials and application of several adhesive, tells today of Propylene. Ester adhesive research trends and research progress. In addition to the acryl ate modified vinyl acetate adhesive preparation and distribution of each group than to its solid content, initial viscosity, viscosity can be held, 180-degree peel strength of the main physical properties[. With the change in the distribution ratio of each group, the physical properties of its corresponding change took place, after joining EHA modified acrylic adhesive vinyl acetate also increased the initial viscosity. With the change in component modified vinyl acetate acrylic adhesive solid content and viscosity are held to change[.Idea vinyl acetate adhesive properties of the impact of factors related to the quality of acrylic acid, the ratio of butyl acryl ate and ethyl acetate, PVA's quality[. The results show that when the initiator was ammonium per sulfate (APS), the acrylic acid quality is 4, the ratio of butyl acryl ate and ethyl acetate 30:70, PVA modified by a mass of 8 180 vinyl adhesive peel strength largest, best quality plastic. Preparation of rubber modified vinyl acetate preferably 180 ° peel strength, holding the maximum viscosity, the measured test results of the best.Key words: Acryl ate; acryl ate modified vinyl acetate adhesives; holding viscous energy; 180 ° peel strength;
Fabrication and Properties of Porous SiC-Cordierite Ceramics
Authors: Jing Ya Ni , Bai Cheng Ying , Jiang Wen Kai , Liao Xin Xing , Deng Xiang Yun , Li Jian Bao
Published: September 2013

The porous SiC-cordierite ceramics were prepared from SiC, calcined kaolin, talc, aluminum hydroxide, and graphite as pore-forming. The influence of pore-forming agent contents and sintering temperatures on the porosity and flexural strength of porous SiC-cordierite ceramics were investigated. The grain phases and the fracture surface micrograph were analyzed with XRD and SEM, respectively. The results show that the sample sintered at 1350°C for 3h with 15% graphite as the pore-forming agent exhibits the most excellent properties: flexural strength of 63.74MPa was achieved at a porosity of 31.80%.
Preparation of Self-Assembled Au Nanoparticles Arrays for Silicon Solar Cell Applications
Authors: Duan Chun Yan , Feng Yuan , Zhao Xiao Xia , Shen Hui
Published: September 2013

Au nanoparticles arrays for silicon solar cells were fabricated by self-assembly method to accommodate manufacturing process of traditional silicon solar cells. Surface morphologies of 10-30 nm thick films after annealing treatment at 600 °C and 700 °C were analyzed. It indicated that morphological features of Au nanoparticles arrays such as particle shapes, size distribution vary with thicknesses of Au films, annealing temperatures and surface morphologies of substrates.
Theory and Experiment Research of Glass Cover in Photovoltaic Thermal (PV/T) Solar System
Authors: He Yong Tai , Xiao Li Xian
Published: September 2013

a novel photovoltaic/thermal (PV/T) solar system was introduced in the paper, which consisted of both a flat plate solar thermal collector and a flat plate PV/T collector in parallel. Moreover, the effect of glass cover on PV/T collector was researched by theory and experiment. Experimental results show the daily average output efficiency of PV module reach 6.5% under condition without glass cover. But its output thermal efficiency is lower, and is only 26.4%. In addition, the daily average output efficiency of PV module and system thermal efficiency would reduce with the increase of the glass cover thickness under different glass cover thickness (2mm, 3mm and 4mm). Moreover, in the glass cover thickness of 2mm, the PV/T system had batter electricity and heat performance, and the daily average output efficiency of PV module and system thermal efficiency are 6.1%, 40.1%, respectively, the hot water temperature could reach 60°C. Hence, the PV/T solar system could meet the basic need of ordinary rural families in lighting electricity and hot water.
First-Principles Study on Cl Adsorption on γ-TiAl(100) Surface
Authors: Zhao Si Jia , Zhou Li Ying , Wang Fu He
Published: September 2013

The adsorption of Cl on the γ-TiAl (100) surface is studied by using the first-principles calculations based on the density-functional theory. The calculated result show that the most stable site for Cl adsorption is the four-fold-hollow site denoted by HFa. The binding energy per Cl atom increases when the coverage is more than 0.75ML. The Cl atoms are more likely to interact with the Ti atoms than the Al atoms from not only the electronic structure but also the atomic structure.
Analysis of Coalbed Methane Inter-Well Interference
Authors: Xuan Ying Long , Han Hai Shui , Jin Rong Rong
Published: September 2013

On the base of the storage, migration and production mechanisms of Coalbed Methane (CBM), the gas-water two phase differential equations describing the seepage of CBM are set up to calculate reservoir pressure and productivity in vertical well pattern, to analysis the propagation characteristics of formation pressure and the influence of inter-well interference and various influencing factors of inter-well interference. The results show that Inter-well interference can speed up both the reservoir pressure drop and the desorption of adsorbed gas, increase the gas well productivity, and enhance the ultimate recovery in the coalbed methane field.
Study on the Influence of Vaporous Hydrogen Peroxide Decontamination Effect
Authors: Gu Jin , Zhou Kan , Liang Ting , Yan Rui , Ji Zhuang Zhou
Published: September 2013

This paper analyzes the effects that influence Vaporous Hydrogen Peroxide (VHP) decontamination, including: VHP concentration,H2O2 solution concentration, the particle diameter of VHP, the temperature of VHP, the production rate of VHP, the contamination species, the contamination density, the surface properties of the contaminated material, the state of agent on the surface and the temperature and humidity of the decontaminated space. With analysis, the paper comes up with an optimal parameter of decontamination effect and provides a theoretical basis for VHP decontamination research.
Automatically Adjusting the Transmission Power of ZigBee End-Devices Based on RSSI
Authors: Yu Xiu Zhen , Yuan Zhong Hu , Hua Wen Wu , Bamodu Oluleke
Published: September 2013

This paper proposes a method that automatically adjusts the transmission power of ZigBee end-devices based on received signal strength indication (RSSI). Under normal communication condition, automatically adjusting the transmission power of ZigBee end-devices by constructing a negative feedback control system, and it uses the controller with relay characteristics, keep it in the smallest state of transmission power, which effectively reduces the energy consumption of the end-devices. Compared with the traditional methods of statically adjusting transmission power, experimental results show that the method proposed is more suitable for network with frequently status changes, making the stability and low-power performance of ZigBee network system significantly improved.
Analysis on Manufacturing Quality Control of 1000 MWe Reactor Pressure Vessel
Authors: Cai Hong Wei , Guo De Peng , Qian Xiao Ming , Zhang Peng
Published: September 2013

Reactor Pressure Vessel is the core equipment in the nuclear power plant, many problems happen during the manufacturing process of localization. Through the statistical analysis on non-conformance and problems detected by quality surveillance, the characteristics and difficulties of RPV quality control in domestic manufacturing process is researched, and the basic problem and the direction of improvement has been analyzed. The data, contents and opinions will further provide reference for RPV and other similar equipments manufacturing quality control.
Improvement Research on the Anti-Vibration Means of Conductors Based on the Energy Balance Method
Authors: Feng Liang , Zhao Ming , Liu Sheng Chun
Published: September 2013

In view of the defects in the traditional aeolian vibration damping method for transmission line that repeated tests have to be undertaken in addition to the method's marked error, this article analyzed the calculating method for conductor anti-vibration test using the energy balance method, and improved the test method for self-damping characteristic and the design method for arrangement damped wire; improving design efficiency and accuracy. Laboratory simulation test which was carried out in connection with the actual engineering parameters verified the strong applicability of the improved method in vibration damping design.
Simulation and Test of Seperated and Manually Adjustable Shock Absorber
Authors: Zhou Zhen Ping , Tong Jing , Gu Zhi Yuan , Yang Gong Ke , Song Da Feng
Published: September 2013

A mathematical model was established on the bases of the analysis of an air-charged split-type adjustable damping shock absorber structure and its working principle, using Matlab to simulate the shock absorber model, at the same time test the shock absorber on the test bench, verified the validity of the mathematical model. On this basis, the main components of the vice-tube such as the nitrogen chamber, the diameter of the needle valve and the spring valve have been simulated to analysis the affection to the shock absorber, so as to lay the foundation for later in-depth study.
Decontamination of Hd Using Vaporized Hydrogen Peroxide
Authors: Liang Ting , Zhou Kan , Gu Jin , Ren Hong Chun , Chen Gao Yun
Published: September 2013

Vaporous hydrogen peroxide (VHP) is an oxidizing agent effective against bacteria, viruses and chemical agent. The paper uses VHP in saturation concentration against HD to get the relationship between decontamination time with different contamination densities, diverse contamination materials and different sizes of droplet by VHP decontamination device which is designed independently in order to provide theory basis to improve the decontamination effect of VHP decontamination.
Analysis on Evaluation of Efficiency of Safety Resources for Enterprises of Producing Hazardous Chemicals Based on Accounting Data
Authors: Li En Zhu , Xu Hong Shan
Published: September 2013

The essential of introducing the system of evaluation of efficiency, based on data of accounting data, for safety resources invested in enterprises of producing hazardous chemicals is developed systematically. The intentions and the features of the evaluation system for the safety resources are also demonstrated. This method of DEA(Data Envelopment Analysis) evaluation of efficiency can be used in all units of enterprises of producing hazardous chemicals with possible accidents in production and for estimating and reflecting the inefficiency of the resources supplied in preventing accidents in production. On the basis of the functions of this evaluation system, the main framework of DEA for the system of evaluating efficiency is also suggested, which is accordant to features of data of accounting in enterprises of producing hazardous chemicals. The purpose of this study is to help effective management of safety resources used in enterprises of producing hazardous chemicals.
The Design of DCS Control System in the Production Process of Argon-Oxygen Refining Ferroalloy
Authors: Ma Hai Tao , Ma Shu Fan , Yu Ying
Published: September 2013

According to the characteristics of argon oxygen refining ferroalloy production process, design two lays control structure. The first lay is centralized monitoring level, adopte dual-CPU IPC to deal with the complex data operations and centralized monitoring operations. The second lay is process control level, use S7-300 PLC of siemens series, the control system is divided into six subsystems. The subsystem and the central controller share with three sets of PLC, to carry out automatic control for the devices of production line. And complete DCS control system design of argon oxygen refining ferroalloy production process, the system have been put into production, stable and reliable, build a hardware platform to achieve energy-saving control strategies of production process.
The Analysis of the Reservoir Eutrophication State in Liaoning Province
Authors: Yu Ning , Li Yang , Chen Zong Jiao , Xu Cheng Bin
Published: September 2013

Through analyzing the water quality class of TN, TP of 14 reservoirs in Liaoning province and the change trend for many years, the algae experience formula is proposed using stumn combined with the actual weather conditions in Liaoning province . It can be concluded that although the TN pollution of the Liaoning province is heavy, the TP is well controlled. And the eutrophication of reservoir has not occurred for many years, because the restriction of TP is good .
Nanocomposite of Ag-Polyacrylonitryle as a Selective Chlorine Sensor
Authors: Semenistaya Tatiana V. , Petrov Victor V. , Lu Ping
Published: September 2013

Gas-sensing elements based on Ag-containing polyacrylonitrile (PAN) films using different temperature and time modes of a two stage IR-pyrolysis have been fabricated. It has been investigated that the gas sensitivity of the samples depends on the composition of the original film-forming solution and on the process parameters of forming the film material. It has been studied that the samples demonstrate gas-sensing properties to Cl2 at room temperature. The outcome of this study is that Ag-containing PAN films can be considered as one of the most promising material to be used in electronic engineering.
HLAC-Based Feature Extraction and its Application
Authors: Gao Ting Ting , Liu Feng Qin , Zhu Jia , Wang Hang Jun
Published: September 2013

Higher order local auto-correlation (HLAC) can be used to analyze the different types of complicated data by limiting orders and spatial displacements. In this paper, the basic concept of HLAC is introduced firstly. Then, we analyzed the HLAC based methods from three aspects: algorithm robustness, pattern improvement, and the changes of image functions which participate in the autocorrelation operation. Finally, the applications of HLAC-based methods are discussed.
Study on Monitoring Slope Deformation with GPS in Highway of Mountainous Region
Authors: Shen Qiang , Chen Cong Xin
Published: September 2013

Compared with the conventional methods for deformation measurement, the GPS technique can not be affected by the weather and vision condition, so it can be used to monitor the slopes of highways in mountainous regions. Nevertheless, to reduce the observation error, countermeasures have to be adopted from the aspects of monitoring techniques and the data processing. Through field test and contrastive analysis, this study proves that the GPS technique can favorably meet the precision request of slope monitoring.
Research on Finite Element Analysis for Homogeneous Earth Dam of Maodun Reservoir
Authors: Xie Xiang Zan
Published: September 2013

In this paper, finite element analysis is proceeded for homogeneous earth dam of Maodun reservoir. Deducing variation law of the dams stress and displacement in construction and operational process. The research results provide a certain reference for design and construction of homogeneous earth dam structure. The analytic results are shown, homogeneous earth dam of Maodun reservoir is reasonable structure, and every index meets the requirements for design.
Failure Analysis on Heating Surface Tube Crackof High Temperature Reheater in Station Boiler
Authors: Jiang Yun Jian , Zheng Xiang Feng , Xue Rong Gang , Dong Guo Zhen , Zhao Ji Feng , Li Wen Bin , Chen Er Song , Li Wen Peng , Wang Qiang
Published: September 2013

Through methods, such as microscope analysis, chemical analysis, metallography examination and scanning electron microscope etc, the causes resulting in high temperature reheater tube cracking of station boiler have been analyzed. The result indicates the crack is reheat crack, and structure stress, higher hardness and excessive welding residual stress are the primary inducement of tube joint crack.
Sintering Character of Coated Al2O3-Y2O3/ZrB2 Composite Powder Materials via Spark Plasma Sintering
Authors: Song Jie Guang , Xu Ming Han , Wang Xiu Qin , Li Shi Bin , Ji Gang Chang
Published: September 2013

ZrB2 has some excellent physical performance and chemical stability, it has been widely applied in a lot of fields. In order to improve disadvantages of ZrB2 that the sintering densification of ZrB2 is too difficult, and it is easy oxidized at high temperature, in this paper, the sintering character of coated A12O3-Y2O3/ZrB2 composite powder materials via spark plasma sintering were investigated. Al2O3-Y2O3/ZrB2 composite powders were prepared by a co-precipitation methods. When the pH is 9, the encapsulted structure of A1(OH)3-Y(OH)3/ZrB2 composite powders is the best. By analyzing the ZrB2 surface status with TEM, the A12O3-Y2O3/ZrB2 composite powders were prepared under the calcining conditions of 600°C¡æ in argon. The high density ZrB2-YAG multi-phase ceramics are prepared via spark splama sintering, which indicate the raw materials adding A12O3-Y2O3 help for the densification of ZrB2 ceramics.
Effect of Ball Milling Methods on the Properties of Quartz Sand Powder Materials from the Yangtze River
Authors: Qiu Zhi Wen , Cheng Jin Yun , Zhou Jian Feng , He Qin Qin , Ma Xiao Dong , Wang Zhi Wen , Chen Xin Chao , Feng Yan Ping , Xie Ting Ting , Li Qiang , Song Jie Guang , Li Shi Bin , Wang Fang , Wang Xiu Qin , Liu Rong Jin
Published: September 2013

In order to lay raw materials foundation for increasing the performance of insulating brick with the low grade quartz sand along the Yangtze River, the effect of ball milling methods on the properties of quartz sand powder was researched via the ball milling method in this paper. The results show the mean grain size of quartz powders are 11.25μm via a roller ball milling, the mean grain size of quartz powders are 7.37μm via a planetary ball milling, and the particle size distribution of quartz powders milled via a roller ball milling is wider than that of quartz powders milled via a planetary ball milling. The ball milling strength of planetary ball milling is higher than that of roller ball milling. The planetary ball milling use more electronic energy than the roller ball milling in the same time. The output of powder using the roller ball milling is more than that of powder using the planetary ball milling. when the raw materials of quartz building materials is low particle size remand, and the output is more, the roller ball milling methods is suitable to prepare the raw materials of quartz building materials.
Manufacture and Analysis of Gas-Sensitive Elements Based on Polypyrrole and its Compounds with Nickel Ions
Authors: Vorobiev Evgeniy , Petrov Victor V. , Shishlianikova Evgenya
Published: September 2013

Various polymers have found application in ecological monitoring (as sensors of foreign matter in air). One of the most appreciated features of a great many of compounds of this class is an ability to change physical properties when being affected by a number of factors (e.g. resistance variation depending on application of certain substances).
Properties of a polymeric material are determined not only by its composition, but by methods of polymerization, mutual arrangement of chain units and volume structure, as well, i.e. by its structure at the supramolecular level.
We applied methods of quantum chemical calculation to determine the types of interaction between an ammonia molecule and a pyrrole pentamer.