bluuebunny/crossref_metadata_2025 huggingface dataset:
FTIR Analysis of the Lignin Structure Changes of APMP Treated by Laccase and Laccase / Mediator System
Authors: Liu Fan , Liu Yu , Chen Jia Chuan , Wang Zhen
Published: August 2013

In this Paper the Two-Stage Method of Enzyme-Mild Acidic Hydrolysis was Adopted to Separate Lignin from the APMP and the Modified Pulp Samples.And then Analyze the Lignin Structure Changes of the Modified APMP Lignin by Laccase and LMS(laccase/mediator System). it was Found that no Oxidation Took Place on Carbohydrates in the LMS, and Lignin Cα Hydroxyl Oxidization Produce α Carbonyl and H2O2 Bleaching can also Oxidation of Lignin, make the Conjugate C = α Increase;the Syringyl Structure Hydroxyl Content Increase, the Lignin Structure Macromolecular Side Chain Fracturing; Laccase and LMS Oxidative Degradation Chromophoric Group Unsaturated C = O, which can Improve the Brightness of Pulp and Create Better Conditions for Unbleached Pulp.
The Present Conditions of Micro-Fine Disseminated Refractory Oolitic Hematite and Expectation
Authors: Liu Shu Xian , Lu Xiao Long , Niu Fu Sheng , Xie Jun
Published: August 2013

Because of oolitic hematite micro-fine disseminated and complex structure and other characteristics, has been considered the world's mineral processing problems. This paper studies the use of its current situation in China and some traditional sorting techniques such as strong magnetic separation - reverse flotation, flocculation - intensity magnetic separation, magnetic roasting - magnetic, and discuss an efficient sorting technique - the deep reduction, which has important practical significance for oolitic hematite sorting.
Intercalation of Gelatin in Monohydrate Zirconium Hydrogen Phosphate
Authors: Sun Yuan Dong , Tang Ling
Published: August 2013

Gelatin has been successfully intercalated into monohydrate zirconium hydrogen phosphate in certain conditions by first inserting aminocaproic acid into its lattice followed by its replacement with gelatin.
The Effect of Thickness on the Properties of TGZO Thin Films for Optoelectronic Devices
Authors: Zhang T. , Wang H. , Zhong Z.Y. , Yang C.Y.
Published: August 2013

Titanium and gallium co-doped zinc oxide (TGZO) thin films with highly (002)-preferred orientation were grown on glass substrates by magnetron sputtering. The effect of thickness on structure and optical properties of the deposited films were investigated by X-ray diffractometer and spectrophotometer. The results show that the polycrystalline TGZO films consist of the hexagonal crystal structures with c-axis as the preferred growth orientation normal to the substrate, and that the thickness significantly affects the crystal structure and optical properties of the thin films. It is observed that the average transmitance in the wavelength range of the visible spectrum decreases with the increase of thickness. The TGZO thin film with about 900 nm thickness exhibits the maximum grain size, the lowest dislocation density and the minimum micro strain.
One Step Synthesis of ε-Caprolactam from Cyclohexanone and Hydroxylamine Catalyzed by SO3H-Functioned Ionic Liquids
Authors: Wang He Fang , Liu Hong Tao , Jia Li Yuan , Wang Yuan Yuan , Wang Yan Ji
Published: August 2013

One step synthesis of ε-caprolactam from cyclohexanone and hydroxylamine used acidic ionic liquids [HSO3-b-N(CH3)HSO4 as reaction medium and catalyst were investigated. Reaction conditions were investigated to obtain the optimum conditions. The results indicate that the yield of CPO is 35.9% and the yield of CPL is 20.4% under optimal reaction conditions.
Synthesis and Properties of Dispersive Type High Temperature Filtrate Reducer Used in Oil Well Cement
Authors: Ma Di Hui , Wei Zhen , Wang Zong Gang
Published: August 2013

The advanced dispersive type high temperature filtrate reducer used in oil well cement was synthesized with 2-acryloyl-2-methyl-propyl sulfonic (AMPS) , N, N-dimethylacrylamide (DMAA) and organic acids. When the mass fraction of synthetic filtrate reducer was 1%, the filter loss of the cement slurry was 30ml/30min at 120 °C and 49ml/30min at 150°C respectively, and the cement strength was 25MPa after 24 hours, and the rheological property of the cement slurry was well when the mass fraction of synthetic filtrate reducer was 2%, and liquidity factor was 0.85, and the consistency was 0.43. The results showed that the filtrate reducer had good dispersity and could control the fluid loss efficiently, and the ability of resistance to high temperature and salt resistance was good.
Fabrication and Photocatalytic Performance of SnO2 Prepared under Ultrasonic Vibration
Authors: Xiao Zheng Hua , Wang Tao
Published: August 2013

Nanostructured SnO2 was prepared by a parallel flow method under ultrasonic vibration. The photocatalytic performance of SnO2 was investigated by utilizing photocatalytic decolorization of methyl orange used as model organic pollutant. SnO2 prepared was characterized by BET, XRD and SEM. The results show that ultrasonication can influence greatly the specific surface parameters, SEM image and particle size, thus leading to better photocatalytic performance. The photocatalytic performance of SnO2 prepared by ultrasonication is 1.5 times of that of SnO2 prepared without ultrasonication.
Characterization of Nickel-Antimony Doped Tin Oxide Electrodes Prepared via Sol-Gel Dip-Coating Method
Authors: Wang Yun Hai , Nie Zi Zhou , Liang Yong Rong
Published: August 2013

Nickel and antimony doped tin oxide (NATO) electrodes were prepared by sol-gel dip-coating method. The effect of doping levels was investigated via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The electrochemical ozone generation efficiency was also tested. The results showed that sol-gel prepared electrodes had a smoother surface morphology and lower current efficiency for ozone generation than electrodes prepared by traditional pyrolysis method. The nickel and antimony doping lead to a decrease in the crystallites size, while its effects on ozone generation efficiency were complex.
Copolymerization of Carbon Dioxide and Propylene Oxide Catalyzed by Salen Complexes
Authors: Jiang Chong Wen , Zhao Chen Chen , Zhou Ke Yuan
Published: August 2013

Three salen complexes N,N'-bis(salicylidene)-1,2-phenylenediamino MⅢ Cl were prepared and employed for the copolymerization of carbon dioxide with propylene oxide. FT-IR and UV-Vis spectra confirmed the characteristic of metal salen complexes obtained. The central metal atoms in the salen complexes have great influence on the copolymerization of carbon dioxide with propylene oxide. The result shows that chromium metal is more effective to synthesize PPC copolymer. The structure of the resulting PPC was characterized by IR 1H NMR and GPC. 86.3% carbonate content of the PPC was achieved with chromium salen complexes.
Preparation and Characterization of Poly(Vinylidene Fluoride) Hollow Fiber Membranes via Modified Thermally Induced Phase Separation Process
Authors: Qin Ai Wen , Li Xiang , Ma Bo Mou , Liu Chun Yi , Zhao Xin Zhen , He Chun Ju
Published: August 2013

Poly (vinylidene fluoride) (PVDF) hollow fiber membranes were successfully prepared using DMAc/γ-BL as the mixed diluent and PEG as the additive through modified thermally induced phase separation (M-TIPS) process. The membranes prepared were characterized by scanning electron microscope. Their properties such as water permeability and mechanical properties were also determined. The results show that PVDF membranes have spherical crystallites structure with interconnected network structure because of the combination of solidliquid and liquid-liquid phase separation. When using 25wt% aqueous ethanol solution as the coagulation, the PVDF hollow fiber membrane shows the tensile strength, i.e.4.59MPa and pure water flux, i.e.415 L/ (m2·h).
Preparation and Characterization of Self-Healing Microcapsules Containing Two-Component
Authors: Tong Xiao Mei , Li Chang Fu
Published: August 2013

Two component self-healing microcapsules were prepared by in situ polymerization with poly (melamine-urea-formaldehyde) as wall, epoxy resin and latent curing agent sebacate hydrazide as core. The ratio of two core material and the reaction process were studied. The size and distribution of particle, surface morphology, structure, thermal properties and content of core were measured and characterized by using particle size analyzer（PSA）, optical microscopy (OM), infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA). The results showed that the microcapsules have smooth and compact surfaces, and have spherical profiles. The average diameter of microcapsules is 30μm and core content of microcapsules is 70%. The heat resistance and solvent resistance of microcapsule are better. The curing temperature is 190°Cand the healing efficiency can be improved.
Investigation into Acceleration Efficiency of Ultrasound in Dyeing Process
Authors: Sun De Shuai , Fang Long , Liu Tao
Published: August 2013

Ultrasound energy could strengthen the adsorption of dyes on fiber. The acceleration efficiency of ultrasound was investigated by dyeing cotton with reactive dyes. The experimental findings showed the accelerative efficiency of ultrasound decreased with the prolongation of dyeing time and increment of dyeing temperature. Ultrasound exhibited a better acceleration effect in high dye concentration. The use of ultrasound reduced about 27.2% Remazol red RGB and 50.3% Remazol yellow 3RS in dyeing wastewater.
A Preliminary Study of the Carbon-Based Solid Acid Preparation Process
Authors: Li Yong Li , Mao Li Ping , Xu Cai Feng , Li Shi You
Published: August 2013

Cotton and sulfuric acid that concentration is 98% as the raw material, to compare the resulting solid carbon sulfonic acid content of the material under different reaction temperatures. FTIR analysis shows that the cotton carbon is an amorphous carbon after sulfonation reactions, a sulfonic acid group present in the resulting material. When the sulfonation temperature is 170 °C, the prepared cotton carbon sulfonic acid has the highest acid content. By the sulfuric acid TG/DTG curve analysis, it verify: 170 °C is the highest activity temperature point of sulfuric acid sulfonation reaction.
Well Logging Identification Methods for Volcanic Lithofacies in the North of Songliao Basin, China
Authors: Li Hong Juan , Yan Wei Lin , Wang Gui Wen , Fu Jian Wei , Wang Chun Yan , Niu Hua Peng , Qin Hao , Cang Dan
Published: August 2013

Volcanic lithology and lithofacies are important factors to control the formation of volcanic reservoir. It is a challenge for geologists and petrophysicist to identify lithofacies in the borehole by using well logs. According to the reservoir characters of Daqing volcanic reservoir in Songliao basin, five lithofacies and fifteen su-facies have been recognized through the drilled core analysis of lithology, texture and structure. The relationship between conventional well logs and volcanic lithology can be established by calibrating with core analysis which can be used to identify the rock composition by the established cross-plots. From the FMI measurement, the differences of resistivity values caused by volcanic rock texture and structure can be showed in the image clearly. It shows that four kinds of textures and five kinds of structure can be identified with FMI image. As the volcanic lithofacies marks, specific volcanics lithology, texture and structure corresponds to the specific lithofacies and sub-facies. So lithofacies distribution can be evaluated effectively with the model of volcanics texture and structure combined with rock composition. The results of study indicate that the composition, texture and structure characteristics of the volcanics can be identified by conventional log with FMI measurement, which is important to the further volcanic reservoir exploration and production.
Effect of Pulsed Electric Fields on the Antibacterial Activity of Ovotransferrin and Mechanism of Action
Authors: Zhang Tie Hua , Liu Di Ru , Yuan Yuan , Zheng Jian , Ye Hai Qing , Xi Chun Yu , Yin Yong Guang , Ahmad Sarfraz
Published: August 2013

Ovotransferrin (OVT) is an iron-binding glycoprotein, found in egg white and serum. It appears to be a multi-functional protein with a major role in avian natural immunity and antimicrobial activity. In this study, the effects of high-intensity pulsed electric fields (HIPEF) on antibacterial activity of OVT particularly for Escherichia coli and the changes in its iron-binding capacity were investigated. Fluorescence spectra technology was used to analyze possible structural changes of OVT, explaining and exploring the effects of the HIPEF technology on the mechanisms that determine the protein activity. The results showed that when the electrical field intensity was 40 kV.cm-1, the antibacterial activity of OVT solution was the highest 87.9% as compared to the control (6.052×107CFU.mL-1) and iron-binding capacity reached the maximum 0.733, which was 2.4 times higher as compared to the control. When the pulse number reached at 80, the antibacterial activity of OVT solution increased up to 74.5% as compared to the control (6.052×107CFU.ml-1) and iron-binding capacity was 1.9 times higher than that of control. With the change of pH values from 7.0 to 8.0, the iron-binding capacity was slightly decreased, the difference was not significant among the groups (P>0.05). Fluorescence spectra analysis showed that the microenvironment of OVT changed with the increase of the pulsed electric field intensity and number and changes in the fluorescence intensity were measured constantly with fluroescensce quench phenomena occurring. The fluorescence intensity was reduced to minimum at 40 kV.cm-1or 80 pulse number. The results showed that the changes of the iron-binding capacity after HIPEF treatment were strongly linked with the changes of the antibacterial activity. An increase of the electrical field intensity and change in treatment time induced higher inhibition of Escherichia coli with OVT.
Effects of Dipping Pretreatment on the Flame Deposition of Carbon Nanostructure on the Low Carbon Steel Substrate
Authors: Zhu Hong Mei , Lei Shu Mei , Kuang Tong Chun
Published: August 2013

In this paper, a low carbon steel was used as the substrate to prepare the carbon nanostructural materials by the oxygen-acetylene flame method. The experimental results show that the composite products including nodular carbon nanoparticles and amorphous carbon were obtained on the substrate after a mechanical polishing pretreatment. Comparatively, the short tubular carbon nanofibers with the diameter of around 100 nm were deposited on the substrate pretreated by dipping in the concentrated nitric acid solution. The possible mechanism for the growth of such carbon nanofibers was discussed.
Enhanced Photocatalytic Performance of SnO2 Doped with Fe2O3
Authors: Huang Sheng Tian , Xiao Zheng Hua , Li Jian Zhang , Zhong Jun Bo , Hu Wei , He Jin Jin
Published: August 2013

In this paper, SnO2 andFe2O3 doped-SnO2 photocatalysts with different molar ratio of Fe/Sn were synthesized by a parallel flow coprecipitation method. The photocatalysts prepared were characterized by Brunauer-Emmett-Teller (BET) method, X-ray diffraction (XRD) and UV/Vis diffuse reflectance, respectively. The photocatalytic activity of photocatalysts prepared toward decolorization of methyl orange (MO) solution was evaluated. Of all of the photocatalysts prepared among the experimented compositions, Fe2O3 doped-SnO2 with 1.5%Fe possesses the best photocatalytic activity.
Laboratory Investigation of Pavement Performance of Warm Mix Asphalt with Different Addition Methods
Authors: Zhu Qi Yang , Zhang Ye Mao , Hu Guang Wei , Zhuang Yuan
Published: August 2013

Warm Mix Asphalt (WMA) technology is increasingly popular in pavement construction. In the summer of 2012, a field trial project using Sasobit-WMA was established in the Huanhu East Road project, Changzhou city. In line with this trail field project, two addition ways of Sasobit were discussed to evaluate pavement performances in terms of workability, rutting resistance, low-temperature cracking and moisture susceptibility. Results identifies that the Sasobit-WMA has benefits of the workability, rutting resistance over the HMA. Although reduced anti-cracking and water stability performances occurred for the WMA, there is no significant difference between them. For Sasobit addition ways, the dry process has an easier workability and a better anti-rutting performance than those of the wet processes. Compared with the wet processes, the dry process has a slight reduction on anti-cracking and water stability performances. However, these reduction are under the control of specifications and also suitable for pavement construction.
One-Pot Synthesis and Visible Light Photocatalytic Activity of AgIn5S8/AgInS2 Composite
Authors: Li Xiang Qing , Wei Dai Long , Kang Shi Zhao , Mu Jin
Published: August 2013

A composite of AgIn5S8/AgInS2 was prepared in aqueous solution by a simple low temperature process using mercaptoacetic acid as capping agent and thioacetamide as sulfur source. The composite was characterized by Xray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The obtained AgIn5S8/AgInS2 composite showed high visible photocatalytic activity for the degradation of methyl orange with 97.5% of degradation efficiency of methyl orange under visible irradiation for 10 min. Under same conditions, furthermore, the AgIn5S8/AgInS2 composite displayed better stability than that of pure AgIn5S8 and AgInS2.
Overview of the Development of Consolidation Theory of Unsaturated Soils
Authors: Lu Chuan Yin , Zhu Sheng
Published: August 2013

The consolidation theory and test results of unsaturated soils were summarized in detail in this article, which include the recent development. And some existent difficulties and problems for consolidation theory of unsaturated soil were also summarized. The consolidation theory of unsaturated soils have well applicable future, but the theory is not mature and need the investigators’ further research.
Paleogeolography of early Coal-Forming of late Permian in Chongqing
Authors: Gao Cai Xia , Shao Long Yi , Gao Cai Hong , Li Chang Lin
Published: August 2013

A total of two third-order sequences are subdivided in Late Permian. Sequence 1 is from the bottom of the Longtan Formation to the bottom of C16 coal in Longtan Formation,representing a transgressive to regressive cycle,and the Sequence 2 is from the bottom of C16 coal in Longtan formation to the top of the Changxing Formation. From Maokou formation to the first flooding surface (the bottom of the C25) is the low systems tract in sequence 1(the earlier stage of coal accumulation). The palaeogeographic map has been reconstructed based on the contour maps of a variety of palaeogeographic parameters including total thickness of strata,thickness of sandstone,thickness of mudstone,and sandstone-mudstone ratio. The paleogeographic units include lowlandhighland eluvial plain and bay-lagoon-tidal. The transgression comes from south and the sediment provenances are mainly from the Kangdian old land in the west.
Study on the Properties of Geocement Based Thermal Insulating Materials for High Temperature Technical Appliances
Authors: Petranek Vít , Guzii Sergii , Sotiriadis Konstantinos , Nevřivová Lenka
Published: August 2013

Three different types ofgeocement thermal insulation materials for energy storage unit were selected after preliminary test. Perlite and vermiculite were added as thermal insulation fillers during mixing process. The produced materials were subjected to heat treatment before determining their properties. The materials produced are characterized by low density (321–376 kg/m3) and thermal conductivity (0.0727 – 0.0766 W/mK). These materials ensure the minimum heat losses of the energy storage unit if the temperature of the medium is 318–923 K and the thickness of thermal insulation layer is 153–160 mm.
The Influence of Fe3+ Doping on the Crystallization of TiO2 and their Photocatalytic Activity
Authors: Wang Ting , Yin Kang Lie , Yang Hai Feng , Tian Qi Hui , Wu Li Guang , Tang Yan Fei
Published: August 2013

TiO2 photocatalysts doped by Fe3+ with different contents were prepared by adsorption phase synthesis. The influence of Fe3+ doping with various concentrations on the crystallization of TiO2 was explored by XRD. Then photodegradation experiments of methyl-orange were employed to evaluate the activity of these photocatalysts. The results indicated that the crystallization of TiO2 was restricted after doping, due to replacement of Ti4+ in TiO2 lattice structure by Fe3+ ions. And the restriction became stronger with doping concentration of Fe3+ ions increasing. Since radius of Fe3+ was close to Ti4+, the restriction of Fe3+ doping on crystallization of TiO2 was so stronger that the photocatalytic activity of most TiO2 doped with Fe3+ ions was lower than that of TiO2 without doping.
Wear Behavior of Mg Alloy Procduced by Equal Channel Angular Extrusion
Authors: Gao Lei Lei , Zhang Jin Zhong
Published: August 2013

A commercial Mg alloy was prepared through equal channel angular extrusion (ECAE) process. The effect of ECAE on mechanical and tribological properties of the alloy was investigated. Experimental results showed that the hardness and strength of the alloy with ECAE were higher than that of the alloy without ECAE and increased with the increase pass number. The friction coefficient and wear resistance of the alloy after ECAE were significantly improved.
Structure Studies on Order Assemblage of Nickel II Complexes
Authors: Liu Yu , Yang Xuan , Li Hong Kuan , Tian Hong Xiao , Gao Jian
Published: August 2013

The nickelII complex [Ni (C9H9O3)2(H2O)2], Diaqua-bis (ethylvanillinato-O,O')-nickelII, the NiII atom is located on a twofold axis and is coordinated by two ethylvanillinate anions and two water molecule in a distorted octahedral geometry . The ethylvanillinate ligand chelates to the NiII atom through its ethyl and hydroxy O atoms,with greatly differing Ni-O bond distances (2.282(2) Å and 1.9792(16)Å). Adjacent complex link to each other via hydrogen bonds forming the three-dimensional supramolecular structure.
Gold Nanoparticle Resonance Rayleigh Scattering Spectral Determination of Trace Au (III)
Authors: Peng Jing , Jiang Cai Na , Ye Ling Ling , Liang Ai Hui
Published: August 2013

In 6 mol/L HCl medium, NaH2PO2 reduced HAuCl4 to generate gold nanoparticles (AuNPs). AuNPs have a strong resonance Rayleigh scattering (RRS) peak at 369 nm. As HAuCl4 concentration increases in 0.04-0.8 mmol/L, the AuNPs generated increase, and the RRS peak ΔI369nm enhanced linearly, the linear regression equation wasΔI369nm = 5122 CAu+13.2, linear correlation coefficient was 0.9968. This method has the advantages of high sensitivity, good selectivity, easy to operate.
The Seismic Facies in the Pliocene from the Shenhu Gas Hydrate Survey in the Northern Continental Slope of South China Sea
Authors: Li Wen , Yu Xing He , Shan Xin , Zeng Xiao Ming , Wang Jian Zhong
Published: August 2013

According to the tectonic movement occurring in the South China Sea since the late Miocene and the sea level changes in Yingqiong Basin, Pearl River Mouth Basin, and global, combining with seismic reflection terminate characteristics, we divided Shenhu gas hydrate survey areas Pliocene strata into four sequences. According to the basic principles of the "outside-shape, internal-structure ,from seismic wave external geometry, supplemented by seismic physical attributes (amplitude, frequency, consistence),we identified the fill, mound, sheet, lens, sheet shape, wedge-shaped 6 categories, a total of 19 kinds of seismic facies in the study area. Contrasting to the drilling gas hydrate depth, the gas hydrate is mainly enriched around the slump deposits.
Analyzing on the Reasonable Composition of High-Chromium Alloy Cast Iron to Make the Mud Pump Shell of Dredger
Authors: Yan Jun , Bai Hong Lu , Liu Jiao , Song Da Jun
Published: August 2013

Chose high-chromium cast iron as the material to make the mud pump shell, the composition of high-chromium alloy has been optimized and five kinds of alloy ( A, B, C, D and E) are designed. Furthermore, using the heat treatment method of air-cooled quenching of 1040°C + 260°C tempering, the relationship among material hardness, the impact toughness and the heating temperature is analyzed after heat treatment. Finally, the abrasion performance of wear-resistant materials is tested. The test result shows that all kinds of wear-resistant materials display well anti-abrasion performance, where the material E has the best relative wear resistance and 19.3% higher than the imported pump casing material. The results provide a scientific standard for selecting the practical wear-resistant materials and locating the piece casting bivalve pump of Cr26 high-chromium cast iron.
CIGS Thin Film: Synthesis and Characterization
Authors: Liang Guang Xing , Fan Ping , Zheng Zhuang Hao , Luo Jing Ting , Zhang Dong Ping , Chi Jing Rong , Chen Chao Ming , Zhao Jun
Published: August 2013

Cu (In, Ga)Se2 (CIGS) thin film was prepared by ion beam sputtering Cu, In, Se and evaporating Ga elements continuously on BK7 glass substrate and the 4-layer film was then annealed at 400 oC for 1h in the same vacuum chamber. The CIGS thin film is single-phase with chalcopyrite structure and has a preferential (112) orientation. Its elemental composition approaches the stochiometric composition ratio of 1:0.7:0.3:2 and it consists of densely packed grain clusters. An energy band gap of about 1.30 eV and an absorption coefficient of 105 cm-1 are obtained. Thus, an optimization of the fabrication for CIGS thin films was achieved.
Influence of Technological Parameters on Sheet Metal Punching Section Quality
Authors: Mao Xian Chang , Mei Zheng , Liu Ren Yi , Luo Dai Song
Published: August 2013

The section quality of sheet metal is influenced greatly by technological parameters during the blanking process, and it is valuable to research them. Base on the current trends and development of the sheet metal blanking, the technological parameters which influence the cutting face quality of blanking are introduced in detail, including blank holder force, Jacking force, mould structure and geometrical parameters, elastic medium, blanking speed, etc. The result shows that sheet metal cutting face quality of blanking can be improve effectively by reasonable parameters.
Post-Annealing Effects on the Surface Roughness of Undoped and Al-Doped ZnO Thin Films Deposited by Atomic Layer Deposition
Authors: Choi Yong June , Kang Kyung Mun , Park Hyung Ho
Published: August 2013

The post-annealing effects on the surface morphological changes of undoped and Al-doped ZnO (ZnO:Al) thin films deposited by atomic layer deposition (ALD) were investigated. The as-grown films were deposited by ALD at growth temperature of 200°C and also, post-annealing of the samples was accomplished at 300°C for 1 h under nitrogen atmosphere. The X-ray diffraction of the films was monitored to study the crystallinity of the films according to post-anneal. The field emission-scanning electron microscopy and atomic force microscopy were conducted to observe the surface morphological changes and measure the root-mean-square roughness of the films in order to analysis the post-annealing effects on the surface roughness of the films.
Synthesis of Anatase/Brookite Mixtured TiO2 Nanoparticles by a Chimie Douce Technique
Authors: Gong Yu Mei , Liang Qing , Guo Jing , Zhang Hong , Guan Fu Cheng
Published: August 2013

Anatase/brookite mixtured TiO2 nanoparticles have been synthesized by using a two-step process through a chimie douce technique. The as-prepared powders were characterized by Fourier transform infrared (FT-IR) spectra, X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), and a nitrogen adsorption apparatus in multipoint Brunauer-Emmett-Teller (BET) method. The results indicated that the TiO2 nanoparticles were composed of biphasial anatase/brookite mixtures, 38% anatase phase formed in quasi-spherical shape and 62% brookite phase formed in nanorod shape. The specific surface area, the average pore diameter, and the specific pore volume were 100.06 m2/g, 14.0 nm, and 0.561 cm3/g, respectively.
Synthesis of LiFePO4/C Composite Cathode Materials by Solid State Method Using Mixed Iron Sources
Authors: Wang Wei , Zhang Zheng , Shi Dao Wushuang , Liu Xing Quan
Published: August 2013

The olivine LiFePO4/C composite cathode materials for lithium-ion batteries were synthesized by solid state reduction method using mixed iron sources. The effects of different temperatures on the electrochemical performance of as-synthesized cathode materials were investigated and analyzed. The crystal structures and the electrochemical performances were characterized by SEM, galvanostatical charge-discharge testing and AC-impedance, respectively. The results demonstrated that the LiFePO4/C composite cathode material synthesized at 710°C and with 1/2(FeC2O4·2H2O/Fe2O3) molar ratio of mixed iron sources has the better electrochemical performance, it has a discharge capacity of 126.1mAh/g at 0.2C and the capacity is kept at 113.8mAh/g after 20 cycles.
The Laboratory Evaluation of Several Polymer Solution Performances
Authors: Sun Jiu Zhou , Wang Chang Bin , Kan Liang , Wang Ze Hua
Published: August 2013

The laboratory evaluation studied the matching relationship between different concentration polymer solution and the formation permeability,and also the matching relationship between different molecular weight polymer solution and the formation permeability. The influences on the solution viscoelasticity,which were caused by the polymer concentration and the molecular weights,were analysed by the laboratory evaluation tests on the viscoelasticity of the polymer solution.
The Synthesis and Crystal Structure of a New 1-D Co (II) Complex Based on Boronic Acid Ligand
Authors: Zhu Shui Dong , Lai Xiao Qi , Lu Ying Bing
Published: August 2013

The title complex, [Co (ncpb)(μ-4,4'-bpy)(H2O)2](4,4'-bpy) (1) (4,4'-bpy = 4,4'-bipyridine, ncpb = 5-nitro-4-carboxylatophenylboronic acid), was synthesized from a hydrothermal reaction of CoCl2·6H2O, ncpb ligand and 4,4'-bpy, and characterized by single-crystal X-ray diffraction analysis. The complex 1 crystallizes in monoclinic space group C2/c with a = 27.104(2) Å, b = 11.3566(8) Å, c = 13.5065(10) Å, β = 113.0220(10)°. The structure of 1 is composed of discrete 4,4'-bpy moleculars and 1-D chains originating from terminal ncpb ligands and μ-4,4'-bpy molecules. The chains are further connected through rich intermolecular OH···O and OH···N hydrogen bonds to genenate a 3-D supramolecular architecture.
Transformation Behaviors of U(VI) on Irons Hydroxide Colloids
Authors: Tan Yan Peng , Zhang Xiao Wen , Lv Jun Wen , Tang Dong Shan , Su Qin
Published: August 2013

The presence of the colloid will affect uranium heap leaching. The objective of this study was the examination of the ability of colloid retardation to uranium by irons hydroxide colloids simulated heap leaching process. Batch studies have been carried by observing the effects of pH, contact time, uranium concentration. Iron hydroxide colloids can exist stably at pH 1.5-3.0. The size of the colloid samples is between 20 nm and 1000 nm. The sorption equilibrium was attained at 24 h. The load uranium capacity on iron hydroxide colloids are between 2.43×10-3 and 3.84×10-3 mmol/mol. The colloid morphology of before and after loaded uranium were identified using S-4800 scanning electron microscopy (SEM/EDS). The load uranium capacity on iron hydroxide colloids is least at pH=2, it implies that the appropriate pH of uranium heap leach is 2.0 on the point of retardation of colloid to uranium migration.
3D Geological Modeling for Zhouan Cu-Ni-Pt Sulfide Deposit, Henan, China
Authors: Miao Jin Xiang , Wang Hong , Song Ke Jin , Qu Jin , Zhang Ming Yun , Chen Xin , Ba Yan
Published: August 2013

3D Geological modeling technique can apply the existing data comprehensively, representing geological structure intuitively, so further the research has significant meaning on this basis. This article constructs the 3D layered model and ore grade model of the sulfide deposit based on exploration data and geological knowledge. In order to estimate precisely the amount of mineral resources depending on the ore grade model, which has been built by the constraint layer, this method can improve the calculation.
The Improvement of the Circuit of Low Power in Yellow River Diversion Project
Authors: Li Hui Ping , Lv Tao , Ma Fu Chang
Published: August 2013

The applications of wireless sensor are the hot topic in the current research of the Yellow River Diversion Project. The realization of low-power wireless sensor is not only an focal point in the study of wireless sensor, but also one of the difficulties in the study of measuring and controlling technology. In the Yellow River Diversion Project, the low power consumption of wireless sensor node circuit has been a drawback of high cost and low accuracy. In this article, we use the improved circuit of wireless sensor node to achieve low power consumption. According to comparing with the traditional low-power circuit, we pointed out its advanttages and disadvantages. Joining negative feedback in the particular experimental circuit, the related data which had been acquired was compared, then the conclusions of the lower power consumption was obtained. In order to reducing the power loss, we could add the appropriate feedback resistor after analyzing the table.Therefore, wireless sensors are important in the Yellow River Diversion Project. The reasonable use of wireless sensors will develop the water conservancy effectivly.
Testing Apparatus Design of High-Concentration Slurry Transport in Environment-Friendly Dredging
Authors: Xiong Ting , Fan Shi Dong , Zhu Han Hua
Published: August 2013

High-cencentration slurry transport can reduce the water content in bottom sludges and relieve the dehydration pressure in slurry storage areas, therefore accelerating the follow-up dealings with sludges and improving resource utilization. To meet such demand for high-concentration slurry transport, this article makes designs for a set of pipeline transportation testing apparatuses, and offers possible follow-up research with testing evidences such as measurements of pipeline pressure and concentration distribution, as well as monitored slurry flow regimes inside the pipes.
A Telemetry and Telecontrol Universal Simulator
Authors: Zhou Jian Jun , Cai Ji Chen , Wang Xiao Fang , Wang Xiu
Published: August 2013

A telemetry and telecontrol universal simulator (TTUS) based on Windows CE was developed. TTUS adopts PCI bus, and CPU main board and peripheral boards are inserted in slots of PCI backplane. TTUS can be used for performing a testing of analog telemetry, digital telemetry and remote control for power equipment. TTUS also supports indirect telemetry and indirect telecontrol via the CAN bus or 485 bus. TTUS control software which runs on the TTUS was developed using VC ++. Program blocking technology and high-resolution time technology were introduced in this paper. The telemetry and telecontrol universal simulator can be used for product testing in far away places of electromagnetic radiation or other dangerous places. Remote test software could be developed for testing the power equipment using function library provided by TTUS.
Automated Design of Mechanical System for Generating Alternate Mechanism Concepts
Authors: Zhang Li Ping , Jin Zhi Yuan , Pang Gui Bing , Zhou Mao Jun
Published: August 2013

An automated design approach for combined mechanical system is presented in this paper. The mechanical system can be generated by combining mechanical units, in particularly, generate alternate mechanism concepts. Beginning with kinematic functions as the input and output of mechanism unit, which are presented as the input and output vectors. And then, equations are defined according to the input and output functional characteristic vectors. Meanwhile, the functional transition can also be established by motion relationship between the inputs and the outputs of combined system. And then, the combination models (series and parallel combined patterns) are provided from the different combination patterns. Additionally, the properties of the different combination are intensively researched and the decomposition rules. By manipulating the matrices and the vectors, a given task can be decomposed into sub-functions. An example is given to show the application of the concept.
Multiparametric Monitoring of Rotating Parts of Mechanical Devices
Authors: Rimár Miroslav , Valko Martin
Published: August 2013

The paper is focused on vibration diagnostics and its relation to rotating parts of mechanical devices installed in hydroelectric plants for small catchment areas. Its aim is to point out the importance of monitoring of rotating parts condition in hydraulic turbines, the application of different methods and new techniques to the diagnostics of operating conditions and the examination of various parameters of generated vibrations. The research includes a design of measurements required to the overall diagnostics of the monitored Kaplan water turbine. Based on the acquired data, conclusions, expectations and benefits have been drawn for both science and the public sector.
A Tentative Study of Relationship between Mantle Plumes, Supercontinents and Orogenic Gold Deposits
Authors: Cui Jun Hao , Ren Tao
Published: August 2013

On the basis of predecessors study, this paper found that outbreak frequency of mantle plume is increase, while scale is reduce. The mantle plume provides ore-forming minerals to orogenic gold deposits, as well as affords force to supercontinent formation and decomposition, for the more controls the global tectonic. Supercontinent is the movement of upper crust that could be cause by combine factors of cold and heat mantle plume. Supercontinent supply suitable tectonic environment for orogenic gold deposits. Further, we discuss the relationship between mantle plume, supercontinent and orogenic gold deposit on space and time. With the evolution of the earth, especially the energy loss, the frequency of orogenic gold mineralization is increasing, while the scale is reducing.
Research of Mine Ventilation Parameters Tester Based on ZigBee Technology
Authors: Ma Heng , Huang Xu Zhen
Published: August 2013

Mine ventilation parameters wireless tester which is based on ZigBee technology is proposed and designed according to the deficiencies of conventional ventilation resistance test method and mine ventilation resistance testing principle. The instrument is capable of simultaneously measuring between a certain range of two points of the temperature, humidity and barometric pressure in the roadway. And it can transmit test data by wireless to the main instrument. At the same time, the main instrument would display and storage the date for post-processing. The development of sensor technology,electronics and information technology and wireless communication technology make developing high-precision mine ventilation parameter analyzer for mine ventilation resistance test to be a reality.
Achieving the Logging Item’s Sensitive Analysis of Complex Lithology by Using the Cross Plot Technique
Authors: Zhang Mei Ling , Zhou Bo Wen , Lin Jian Hua , Yu Feng Lin
Published: August 2013

It is difficult to discriminate the lithology of complex lithological profile which contains lava, terrigenous sedimentary rock and volcanic transitional lithology by using conventional logging curves. Attributing to different kinds of lithology, different logging items have different reflecting abilities. Based on the 500 Hailar Basin complex lithology samples, we’ve made logging response cross plots of resistivity and radioactive curves, porosity and resistivity curves, porosity curves and radioactive curves to identify the sensitive feature of logging response among different lithologies. The research provides the basis for fine evaluation of complex lithology profile by using the well logging data.
The Designment of Double-Roll Cake Breaker
Authors: Yu Ke Qiang
Published: August 2013

This paper combined the actual situation of crushed soybean processing, for the The double-roll cake breaker and structural design of the shafts, gears, gear plate and flexible institutions were discussed and final using UG software animation simulation,Provides a theoretical foundation for the future research for efficient processing of soybean cake breaker. Key words: double-roller, cake breaker,design.
An Automatic Light Communication System for Vessel
Authors: Zhang Huan , Liu Ming
Published: August 2013

In this paper, we present an automatic light communication system for vessel. Light communication is a conventional communication mean which has been used in vessel for several years. Light communication has little to do with the surrounding environments. What is more, electromagnetic interference (EMI) has no impact on light communication, which is kernel for military application. Also light communication has a somehow long distance. However, it takes a long time for traditional light communication system to translate even a short message, and most of the work is done by human, some work such as sending and receiving signals must be done by well-trained artificer. Because of some inescapable human reasons, some mismatch signal in the process of sending and receiving may cause some fatal mistake and failure. To avoid the demerit of traditional light communication system, an improved light communication system for vessel is presented. In the proposed light communication system, the sending and receiving process is automatic and controlled by computer, both the communication speed and accuracy is improved, without the loss of merits of traditional light communication system. Some experimental results show the effectiveness and robustness of the proposed communication system.
Kinematics Analysis of the Eccentric Swing Paper Transfer Mechanism
Authors: Su Li Ya
Published: August 2013

The paper transfer mechanism is an important component of the offset presses, which weightily affects the paper transfer, handover and the print quality of the offset presses. The paper analyzed motor process of the eccentric swing paper transfer mechanism with J2108; introduced the motion law of cam follower lever with the driving paper transfer mechanism by complex vector Analytical method; Draw the angular displacement and time diagram, the angular velocity and time diagram and the Angular acceleration and time diagram with follower lever.
Study on the Shift Schedule Based on Driver Type of Automatic Mechanical Transmission
Authors: Han Peng , Cheng Xiu Sheng , Wang Yin Shu , Liu Xi
Published: August 2013

An intelligent recognition system of driver type suitable for different drivers was studied in this paper,and the driving style recognition based on BP neural network classifier structure was designed to make different types of shift schedules to adapt to different drivers.The intelligent recognition of driver type was verified by simulation.The rusults showed that the intelligent recognition based on BP neural network classifier structure had good adaptive ability,which could meet the requirements of different types of drivers.
Engine Hood Lightweight Optimization Design Based on Overall Satisfaction
Authors: Zhao Gui Fan , Li Yan , Liu Ming Min
Published: August 2013

CAE analysis on engine hood is conducted under five common working conditions in this paper. Considering lightweight material application status at present, three material substitution plans are determined. To make full use of material properties, draw up size optimization scheme based on volume target and displacement and frequency constraints. Determine the optimum thickness by conducting size optimization on engine hood with optimization tool-Optistruct, so as to realize lightweight design.Based on the introduction of a evaluation method for lightweight scheme selection based on overall satisfaction and taking the factors of weight, cost and performance into consideration, at last, determine the best lightweight scheme.
Study on Structure Optimization of Multi-Wavelength Brillouin-Erbium Doped Fiber Laser
Authors: Zhou Xue Fang , Yuan Shan
Published: August 2013

A ring cavity multiwavelength Brillouin erbium-doped optical fiber laser （EDFL）based on the stimulated brillouin scattering effects and linear gain mechanism of erbium-doped fiber was demonstrated, in which single mode fiber was used as Brillouin gain medium and the Stokes signal was amplified by using the erbium-doped fiber amplifier, so that the laser can produce a stable multi-wavelength output at room temperature. Through the study and analysis of the position of the circular and coupler and the access mode of the coupler, we found that they both had influence on the output of the brillouin-erbium fiber laser. Then we have done some experiments at the Brillouin pump power of 14 dBm and the 980 nm pump power of 23 dBm, and single mode fiber length of 10km. The results showed that the access mode of the coupler affects the output of the brillouin-erbium fiber laser obviously. The detailed test results and the corresponding explanation were given.
Deployment of Wireless Sensor Network for Gas Leak Monitoring
Authors: Wang Ming Wei , Wang Yue , Guo Wen Qiang
Published: August 2013

Gas leak is one of the main reasons of causing accidents in the petrochemical industry. The effective technical means for timely, accuracy monitoring gas leak is imperative for accident prevention. With recent advances in wireless communication and embedded computing technologies, Gas leak monitoring systems (GLMS) incorporated with wireless sensor networks (WSNs) have become practically feasible. A gas leak monitoring scenario of ZigBee WSN incorporated with the GPRS and ultrasonic gas leak detection (UGLD) is proposed to provide continuous, timely and reliable monitoring and analysis of gas leak parameters for increased sensitivity and specificity. The hardware and software development platform of GLMS is also presented. With its low power, flexible and compact design, the gas leak monitoring system provides a versatile environment for installation, maintaining.
Analysis of Potash Resource Situations in China and Development of Yiliping Saline Lake in Qinghai Province
Authors: Li Zheng Shan
Published: August 2013

The potash resource in China is in shortage for a long time and the production of potassium salt fertilizer is insufficient. In order to fulfill the demand of potash, the scale of prospecting should be enlarged and the saline lakes are important resources for potash. In this paper, potash resource situations in China was analyzed and Yiliping saline lake was taken as an example to analyze the area characteristic, potash resource reserves and economic benefit prospects. With contrasting and analyzing all relative data, the results show that more potash resources should be developed to meet the demand and the reserve of potash resource of Yiliping saline lake is huge and the market environment is reliable and comparatively stable, which means Yiliping saline lake can be invested and developed in large scale.
Numerical Study of Koyna Dam Failure Process Using Extended Finite Element Method
Authors: Fan Cheng , Jing Xue Qing
Published: August 2013

This article expound the development process and the basic principles of the extended finite element, In the large commercial software abaqus on the platform of India koyna dam failure process are numerically simulated in earthquake, and koyna dam crack initiation, through ,propagation path analysis. The results show that the earthquake began to crack initiation site often at the large dam slope fold. The study provides a theoretical foundation and scientific basis for the actual engineering improves safety.