bluuebunny/crossref_metadata_2025 huggingface dataset:
Pelvic Osteotomy Techniques and Comparative Effects on Biomechanics of the Hip: A Kinematic Study
Authors: Maheshwari Rajan , Madan Sanjeev S.
Published: December 2011

Dysplasia of the hip is characterized by malpositioning of the proximal femur in a shallow acetabulum, providing deficient femoral head coverage. This abnormal relationship leads to altered biomechanics of the hip joint, as predicted by measurement of kinematic parameters such as increased load over reduced acetabular weight-bearing area, leading to increased joint contact stresses, which subsequently results in secondary osteoarthrosis, pain, and disability. To prevent these sequelae, particularly in children and younger adults, various osteotomies have been performed with varying degrees of success. The goal of this study was to devise a simple and reproducible laboratory method to perform a kinematic analysis of the individual and comparative effects of 5 commonly performed pelvic osteotomy techniques: Chiari pelvic osteotomy, Salter innominate bone wedge osteotomy, Steel triple pelvic osteotomy, Tönnis triple pelvic osteotomy, and Ganz periacetabular pelvic osteotomy. The aim was to determine which of the osteotomy techniques caused greater correction in most of the kinematic parameters used to estimate changes in the biomechanics of the hip joint. Our hypothesis was that pelvic osteotomies such as Chiari and Salter produced favorable changes and were relatively easily reproducible, but that more biomechanical correction in all planes would be achieved by the relatively more complex triple innominate bone and Ganz osteotomy.
Bilateral Achilles Tendon Enlargement
Authors: Huang Lu , Miao Xu-dong , Yang Di-sheng , Tao Hui-min
Published: December 2011

Cerebrotendinous xanthomatosis is a rare, autosomal-recessive, lipid-storage disease with accumulation of cholestanol in most tissues, particularly within the Achilles tendons. It has been characterized both clinically and biochemically, and recently from the molecular biological aspect as well. Juvenile cataract, childhood diarrhea, mental retardation, cerebellar ataxia, and tendon xanthomas are the most prominent features of this disease. Bilateral symmetrical firm masses of Achilles tendons may be the first symptom the patient recognizes because it can jeopardize his or her ability to walk. However, the treatment strategies for tendon tumors vary.

In a recent case, we diagnosed the disease properly, according to the clinical manifestations and the radiological and laboratory examinations. The genetic mutation was characterized by analyzing sterol 27-hydroxylase from the patient’s family (located on nucleotide 599) and led to a nonsense mutation. It is a unique type of mutation that has never been reported to our knowledge. Tendon lesions are characterized by the loss of muscle fibers and accumulation of lipid products. To help the patient regain the strength of the Achilles tendon and walking abilities, a large area of tendon tumor was excised, followed by reconstruction with a tibialis posterior allograft, which is the second strongest tendon in the foot and ankle. Although the use of this type of graft is uncommon, the final result was satisfactory. At the 10-month follow-up examination, the patient could walk easily without pain. This case report suggests that the surgical procedure will provide an alternative for the repair of large-area degenerative Achilles tendons.
Synthesis and Characteristics of Interpenetrating Polymer Network Hydrogels Based on Konjac Glucomannan with Different Molecular Weights and Poly(acrylic acid)
Authors: Yao Xue , Luo Xue Gang , Han Ben Chao
Published: December 2011

Konjac glucomannan with different molecular weights/poly(acrylic acid) hydrogels were prepared in this paper. The structure of the IPN hydrogels was characterized by FT-IR and SEM. The swelling ratio of these hydrogels showed they had pH-sensitive properties and the enzymatic degradation tests showed the hydrogels retain the enzymatic degradation character of KGM. Furthermore, hydrogel composed of native KGM degraded sharply in enzymatic degradation test and it had bigger swelling ratio and weight loss ratio than those hydrogels which composed of lower molecular weights KGM. Therefore, hydrogels composed of lower molecular weight might release drug more stable when they were used as drug carrier.
The Optimization of Extraction of Cordycepin from Fruiting Body of Cordyceps militaris (L.) Link
Authors: Zhang Hong , Wang Jun Wei , Dong Sheng Zhong , Xu Fang Xu , Wang Sheng Hou
Published: December 2011

The optimization of extraction of cordycepin from fruiting body of Cordyceps militaris YCC-01 by water extraction, ethanol extraction, ultrasonic extraction, and synergistic extraction is studied in this paper. The optimal conditions, water extraction at 85°C for 2.5h plus ultrasonic extraction at 600W for 35min, were determined through high performance liquid chromatography (HPLC). The dried fruiting body of cordycepin content was 9.559 mg/g by this synergistic extraction method. The yield was 66.2% higher than the control group 85°C water extraction 2.5h and 11.3% higher than the room temperature ultrasonic extraction 35min. This method has a short extraction time, low cost, low loss of active ingredients and other characteristics with good prospects.
The Research of Controlled Rolling and Cooling Process in X70 Grade Pipeline Steel with Vanadium Microalloying
Authors: Ye Xiao Yu , Zhang Kai Hua , Zuo Jun
Published: December 2011

In Formastor-Ⅱ thermal expansion phase transition instrument, determine test steel's thermal expansion curves with different cooling rates during continuous cooling. Using thermal expansion combined with metallographic-hardness method to draw the continuous cooling transformation curve (CCT).According to the test results draft thermal simulation program, in Gleele-3500 thermal simulation test machine, conduct thermal simulation experiment for vanadium microalloying X70 grade pipeline steel at different deformation temperature, deformation extent and coiling temperature. Analysis that the microstructure was influenced by different rolling process.The results showed that: in industrial production, the experiment steel's rough rolling temperature should be controlled more than 1020°C, finishing temperature controlled in 820±20°C and coiling temperature controlled in 500～530°C to obtain acicular ferrite.
The Research on Ragweed Extracting Solution to Rats Acute Toxicity and Protective Enzymatic Activity of Rats’ Liver
Authors: Zhang Xin Qian , Zhang Guo Cai , Bao Ying , Zhao Bo , Zhang Qiu Shuang
Published: December 2011

For the purpose of researching the effect degree of insecticidal and anti-microbial activities in ragweed extracting solution on the health of mammal. Firstly, we extracted the activated ingredient which has the function of anti-microbial activities. Then we made acute toxicity test and analyzed protective enzymatic activity of rats’ liver. The result of test showed that extraction rate of using ultrasonic extraction method was 22.16%, which is higher than ordinary temperatures immersion method and heating immersion method. The LD50 of mice with ragweed extracting solution is 4986.396mg/kg. Its toxicity level belongs to low mammalian toxicity. The results of protective enzymatic activity assays on rats’ liver showed that activity of SOD was restrained at first and then was activated. The highest inhibition rate was 15.88% in treatment group and the highest activity of SOD in treatment increased by 1.13times than normal group. The activity of CAT in treatment group was all lower than normal group. The highest inhibition rate was 42.06% through the enzymatic activity change process. The activity of POD in treatment group was invariably in the state of inhibition. The highest inhibition rate was 79.06% in treatment group.
(n, m)-Strongly Gorenstein Projective, Injective and Flat Modules
Authors: Xing Jian Min
Published: December 2011

Some properties of -Strongly Gorenstein projective ,injective and flat modules are studied and some connections between -Strongly Gorenstein projective , injective and flat modules are discussed . At last, these properties under change of rings are considered.
3D Numerical Simulation of Flow Field in a Circular Secondary Clarifier
Authors: Wei Wen Li , Zhang Pei , Liu Yu Ling
Published: December 2011

In this paper, we use two-phase mixture model and the 3D Realizable k-ε turbulence model to numerically simulate the advection secondary turbulence flow in a circular secondary clarifier. The PISO algorithm is used to decouple velocity and pressure. The results show that the model can provide a reference in designing sedimentation tanks.
Analysis on Chemical Reaction Rate of Iron and Molten Tin
Authors: Li Hai Bin , Huang Qing Xue , Wang Jian Mei , Gui Hai Lian , Ma Qin
Published: December 2011

Based on experimental results and theoretical analysis at different temperatures and time of unit diffusion quantity，the chemical reaction rate in the reaction process between iron and molten tin, is investigated within the range of 260～350°C. The results indicate that the chemical reaction rate at different time decreases rapidly with the time at the same temperature, it take about four minutes to cease. Morever, the numerical value of the reaction rate at different time are close and decrease with the increasing of the temperature.
Effect of Temperature on Electricity Generation of Single-Chamber Microbial Fuel Cells with Proton Exchange Membrane
Authors: Tang Yu Lan , He Ya Ting , Yu Peng Fei , Sun Hong , Fu Jin Xiang
Published: December 2011

The effects of temperature on electricity performance and microbial activity were investigated in single-chamber microbial fuel cell with proton exchange membrane (S-PEM-MFC) using glucose as substrate with phosphate buffer solution(PBS). The results showed that S-PEM-MFC able to adapt to a wide temperature range of 11, 18, 25, 30 and 35°C. The open circuit voltage, polarization, power density and microbial activity of S-PEM-MFC were increased with increasing temperature from 11 to 30°C. The maximum power density were 193.8mW∙m-3 at 30°C. Compared to 30°C, the battery open circuit voltage increased by only 4.8% at 35°C, while the polarization and power density is almost the same. These results demonstrate that according to the principle of economy which 30°C should be the optimal operating temperature of S-PEM-MFC.
pH of Toluene in [Bmim][BF4] and [Bmim][PF6] Ionic Liquids
Authors: Ren Ai Ling , Zhang Dan Dan , Duan Er Hong , Guo Bin , Chen Jian Zhong
Published: December 2011

The pH value of binary mixtures containing toluene and 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) ionic liquids over the range of ionic liquids mole fraction (xIL) from (1.0 to 0.60) and temperature range from (293.15 to 340.65) K were measured. The range of the pH values of toluene and [Bmim][BF4] and [Bmim][PF6] were from (3.16 to 4.63) and (5.57 to 7.55), respectively. Comparison showed that the pH of toluene in the two ionic liquids was in sequence: [Bmim][BF4] < [Bmim][PF6]. The temperature dependency of the pH value was correlated using an empirical equation. The correlations gave satisfactory results.
Preparation and Properties of 1,8-Naphthalimide Derivatives Grafted onto Chitosan
Authors: Zhang Guang Hua , Liu Li Juan , Sun Wei Ling
Published: December 2011

A kind of 1,8-naphthalimide derivative grafted onto Chitosan was synthesized with Chitosan, 4-bromo-N-(2-aminoethyl)-1,8-naphthalimide and 4-bromo-1,8- naphthalic anhydride via substitution and amidation. The structures of compounds was characterized by FT-IR．Thermal stability and fluorescence spectra of the target product were investigated. Compared with 4-bromo-N-(2-aminoethyl)-1,8-naphthalimide, the maximum fluorescent intensity of the 1,8-naphthalimide derivative grafted onto Chitosan was increased 1.25 folds.
Preparation of Polysilicate Aluminium Ferric (PSFA) Using Effluents and its Application on Banknote Printing Wastewater Treatment
Authors: Qiu Zu Min , Liu Dong Jing , Qiu Jun Ming
Published: December 2011

Based on the concept of “waste control by waste”, a kind of inorganic polymeric flocculants which was called Polysilicate Aluminium Ferric (PSFA) was made from bentonite, wastewater containing Al3+, wastewater containing Fe3+ and sulfuric acid under normal temperature conditions, and it was adopted to treat banknote printing wastewater. The experiment results revealed that the maximal Chemical Oxygen Demand (COD) removal efficiency of 95.52% with residual COD of 3571mg/L and color removal efficiency of 96% with residual color of 40 times could be achieved at the optimal dosage of 48g/L wastewater, a number of big and dense alum flocs appeared quite fast, the flocs and water could be obviously separated in a short time, the pH of coagulating effluent of which color was light green was about 4.01, the effects of coagulation were very well.
Study on Coupled Oxidation and Microwave Process in Treating Urban Landfill Leachate by Fenton and Fenton-Like Reaction
Authors: Jiang Bin Hui , Zhao Yan , Jin Yi , Hu Xiao Min , Jiang Li , Li Xiao Ming
Published: December 2011

In study, Microwave Irradiation enhanced Fenton-Like Process was introduced as a novel technology in the treatment of Landfill Leachate containing refractory organic matters. The sample leachate with initial COD loading of 11434 ~12067 mg•L−1 was collected from the Laohuchong (Shenyang, China) City Landfill. Fenton (FeSO4/H2O2) and Fenton-like (iron tailings/H2O2) reagents coupling with Microwave Irradiation were both studied. The Microwave Irradiation enhanced Fenton-Like Process was conducted under the optimal conditions as follows: 480W of microwave power, 3 min of radiation time, 3.0 of initial pH, 100mL•L−1 of H2O2 and 2g•L−1 of iron tailings. The removal rates of leachate samples with initial COD =11928 mg•L−1 using 1.5g.L-1 FeSO4 and 2.0g.L-1 iron tailings are 45.1% and 42.3% respectively on the condition of 320W MW radiated for 3 min at room temperature. The highest removal rate of the MW Fenton-Like Process is about 46% under the optimum conditions. It demonstrates the Fenton-Like reagent can be used as a substitution of Fenton reagent in Landfill Leachate applications which has extensive application prospect and extraordinary significance in aspects of resource utilization of waste materials and cost saving.
Study on Nanometric Machining Mechanism of Monocrystalline Silicon by Molecular Dynamics
Authors: Guo Hong
Published: December 2011

A three-dimensional model of molecular dynamics (MD) was employed to study the nanometric cutting mechanism of monocrystalline silicon. The model included the utilization of the Morse potential function to simulate the interatomic force between the workpiece and the tool, and the Tersoff potential function between silicon atoms. Amorphous phase transformation and chip volume change are observed by analyses of the snapshots of the MD simulation of the nanometric cutting process, energy and cutting forces. Dislocations and elastic recovery in the deformed region around the tool do not appear. Cutting forces initiate the amorphous phase transformation, and thrust forces play an important role in driving the further transformation development. Nanometric cutting mechanism of monocrystalline silicon is not the plastic deformation involving the generation and propagation of dislocations, but deformation via amorphous phase transformation.
The Stability Analyses of Unsaturated Slope Based on the Sarma Method
Authors: Li Rong Jian , Xu Qiang , Zheng Wen , Lin Hung Chou
Published: December 2011

The study of unsaturated slope stability is one of issues in geotechnical engineering. Firstly, the different treatments of matric suction in the Sarma method are analyzed based on the Bishop’s unsaturated strength theory and Fredlund’s unsaturated strength theory respectively. Then, application of the developed method on the stability analyses of an unsaturated soil slope is also discussed. Through the comparison on the computational results, it still can be concluded that the computational error is slights, which analyzed by means of the developed Sarma method based on the Bishop’s unsaturated strength theory and Fredlund’s unsaturated strength theory.
Treatment of Wastewater Containing High Concentration Ammonia-Nitrogen by Electrochemical Oxidation Process
Authors: Li Ya Feng , Duan Yuan Han
Published: December 2011

The simulant wastewater containing high concentration ammonia-nitrogen was treated by electro-chemical oxidation process in intermittent experiment. The influences of different factors including plate distance,current density, chloride ion concentration and initial pH on ammonia-nitrogen and total nitrogen removal were studied.According to the results of the test, the optimal reaction condition was determined as follows: plate distance was 40mm，current density was 90mA/cm2，chloride ion concentration was 8000mg/L, initial pH was 10。Under the above condition,the total nitrogen concentration reduced from 2000 mg/Lto 280mg/L when the reaction time was 8h, and the removal rate reached 86%. As we can see, the effect of the treatment is quite positive.
Near Field Optical Properties of Individual Ag Nanowire Dimers Encapsulated by Dielectric Layers
Authors: Jin Song Lin , Du Chao Ling , Shi Da Ning
Published: December 2011

By finite element method (FEM), the near field optical properties of an individual Ag nanowire dimer encapsulated with nanometric dielectric layers were investigated. We demonstrated that the electromagnetic enhancement could be optimized by improving the substrates’ refractive index and the thickness, and gave the peak wavelength as a function of the two parameters separately. The results are important for further understanding surface-enhanced Raman Scattering (SERS) and have referential meaning for choosing the appropriate substrates in the application.
Nonlinear Analysis of FRP SRC Concrete Beams
Authors: Zhou Le , Liu Xiao Xing , Li Ying , Yan Dong
Published: December 2011

On the basis of the theory of FRP sheet steel reinforcing concrete beams (SRC-beams), in order to better explore the force performance of FRP (Fiber Reinforce Plastic) steel reinforcing concrete beams, this paper analyzes the stress process simulation of the beam using the computer program of nonlinear analysis. In order to validate the program of the beam section the reliability of the simulation analysis, this paper brings beam section size and its material performance parameters into program and gets different parameters on the bearing capacity of beams influence law. Research shows that when working in the stage of FRP elasticity the reinforcement of FRP layers has little influence on bend curvature figure. In the elastic-plastic stage it has larger influence and the cure increases with the increase of FRP reinforcement layer. It shows that with the increase of the section stiffness beam bending flexural capacity is also bigger.
On the Design and Development of a Novel Real-Time Transaction Price Estimation System
Authors: Chen Chi Hua , Lin Szu Yin , Chang Hsu Chia , Lo Chi Chun
Published: December 2011

In global open economy, transaction price estimation is an important issue in finance under stock price fluctuation. However, the transaction price is depend on the investors’ expect price which is difficult to be captured in used and implemented models for transaction price estimation. Therefore, this paper proposes the Transaction Price Estimation Model (TPEM) and designs a novel Real-time Transaction Price Estimation System (RTPES) which adopts the TPEM based on the efficient market hypothesis to estimate the investors’ expect price. In experiments, the simulation results show that the average accuracy of TPEM is 99.37%. This approach is feasible for stock investment decision-making.
Preparation and Microstructure of TiB2/Al Composites
Authors: Jin Hua , Zhao Yu Tao , Chen Shuai , Li Gui Rong
Published: December 2011

TiB2/Al composites were prepared by the direct melt reaction using Al-3B master alloy and Ti powder as the reactive materials. The phase composition and the microstructure of the as-prepared composites were investigated by XRD, SEM, TEM etc.. It is showed that the reinforcement was only TiB2, moreover, the volume fraction of the reinforcements increased with the increasing of the reactants. The TEM images showed that TiB2particle was in the shape of hexagonal, circle and rectangle, and its size was 0.5-2μm.
Research of Chinese Named Entity Recognition Using GATE
Authors: Cheng Chen , Cheng Xian Yi , Hua Jin
Published: December 2011

Named Entity Recognition is one of the important research fields in Information Extraction. This paper first introduces Information Extraction and Named Entity Recognition, then introduces GATE which is a tool for Information Extraction, and discusses the rules of Money Recognition using GATE.
Sophistication of Taiwan High School Military Training and Education System of Teacher Education Research
Authors: Huang Min Chuan , Wu Chao Yen , Tzeng Jang Ruey
Published: December 2011

This study sought to resolve the current imbalance of demand and supply of the military instructors on the campus in Taiwan. Having witnessed the importance of a sustainable supply of certified military instructors to support the all-people-defense-education, the study first reviewed two versions of teacher training programs carried out by the Ministry of Defense and normative colleges. After exposing the weaknesses of these two versions of selection practice, this study continued with its recommendation. It is hoped that with its suggested concept of building partnership via outsourcing, professional identity of the military instructors can be elevated and ascertained. Specific contributions of this study are: the National Defense Education Division made sophisticated system of teacher education and teacher key capabilities. Project commissioned by the National Defense Education recruitment agency approach teacher education ideas
Study on Clean Leather Deliming Process with Sulfonated Phthalic Magnesium Salt
Authors: Qiang Xi Huai , Tang Xiao Jin , Zhang Hui
Published: December 2011

Sulfonated phthalic magnesium salt (SPMS) was used in the leather deliming process. The deliming properties of SPMS was determined with the indicators such as the change of pH, content of NH4-N, COD of deliming float, deliming speed, etc. The results show that SPMS has a mild deliming ability, excellent buffering and calcium removal performance; the total nitrogen content of deliming float is 3.4% of the conventional deliming process. Comprehensive performance of deliming is well and the delimed crust has a fine, smooth grain. It can be used as non-ammonium deliming agent in the clean leather manufacture, and it will benefits for the energy saving and emission reduction of leather industry.
Study on the Propertyies of Magnesium-Doped Calcium Polyphosphate Scaffolds Ceramics
Authors: Zhang Yin , Kong De Shuang , Gu Chang Jun , Han Xiao Wei , Qiu Tai
Published: December 2011

This Magnesium-doped calcium polyphosphate (MCPP) porous bioceramics of different magnesium content were prepared by the method of solid reaction sintering. The effect of magnesium on the structure and density of magnesium-doped calcium polyphosphate bioceramics was studied. Phases, cross section morphologies and porosity of MCPP bioceramics were analyzed with X-ray diffraction(XRD) and scanning electron microscopy (SEM). The results show that MCPP ceramics were successfully prepared by the solid reaction sintering, and the bending strength of ceramics began to increase and then to decrease with increasing amounts of magnesium content apart with the improvement of the stability improved.
Deformation in Impacted Stitched Composite Plates Subjected to Compressive Load
Authors: Ruan Jiang Tao , Wang Shi Bin , Tong Jing Wei , Shen Min , Aymerich Francesco , Priolo Pierluigi
Published: December 2011

The study on deformation in impact-damaged graphite-fibre/epoxy stitched composite plates subjected to compressive load is presented. A delaminated cross-ply laminate [03/903]S obtained in low-velocity impact test has been examined using a self-designed anti-buckling device in compressive experiment. The out-of-plane displacement field of the specimen has been measured with an optical whole-filed measurement technique, which is carrier electronic speckle pattern interferometry (carrier-ESPI). Finite element (FE) simulation is also carried out to predict the deformation. The effect of the stitching line on compressive deformation is discussed for various stitched laminates. Finally, the numerical results are compared with experimental measurement deformations under different compressive loads.
Synthesis of a Novel Photochromic Diarylethene and its Application in Optical Recording Storage
Authors: Wang Tao Feng , Xiao Ting , Liu Wei Jun , Liu Gang
Published: December 2011

A novel unsymmetrical photochromic diarylethene compound bearing dithiol-pentane unit, 1-[2-methyl-5-(1,3-dithiol-pentane)-3-thienyl]-2-[2-methyl-3-benzofuran-yl]perfluoroyclopentene(1a) has been synthesized, and its photochromic, fluorescence and optical recording strorage properties were investigated. The compound exhibited remarkable photochromism and clear fluorescent switches both in solution and in PMMA film. Using diarylethene 1b/PMMA film as recording medium and a linearly polarized 650 nm laser diode for recording and readout, polarization multiplexed image recording can be carried out in this film. The results demonstrated that the diarylethene can be potentially used as polarization multiplexing holographic recording medium.
Synthesis of Nanosized Zirconium Carbide (ZrC) by a Polymeric Precursor Route
Authors: Tao Xue Yu , Qiu Wen Feng , Li Hao
Published: December 2011

Based on the basic principle of carbothermal reduction reactions in the ZrO2-C system, nanosized ZrC powders were synthesized by the preceramic method using Polyzirconoxane (PZO) and salicyl alcohol (SA) as sources of zirconia and carbon respectively. The obtained polymeric precursor exhibited excellent solubility and rheology for the processing of ceramic matrix composites. Thermal dynamic change process, phase composition, crystallite size and morphology of the synthesized powders were characterized by Thermogravimetric analysis (TGA)、 Scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). When heat-treated at 900 °C under flowing argon, precursors transformed into intimately mixed amorphous carbon and nanosized tetragonal ZrO2. Further heat treatments (1300 °C) led to the formation of zirconium carbide with a yield of 70.6 %. The obtained ZrC particles exhibit cubic morphology with size ranged in 50-100 nm. This study displays the preparation of nanosized ZrC materials from the preceramic polymers.
The Natural Neighbour Petrov–Galerkin Method for Stress Analysis of Plates
Authors: Qu Hong Chang , Li Yuan Xin , Chen Ling Ling
Published: December 2011

A meshless natural neighbour Petrov–Galerkin method (NNPG) is presented for solving the elasticity problems in this paper. In a certain domain, a discrete model consists of a set of distinct nodes, and a polygonal description of the boundary. The natural neighbour interpolation has Kronecker delta function property, and the construction of local sub-domain is simple both for internal nodes and boundary nodes. The whole interpolation is constructed with respect to the natural neighbour nodes and Voronoi tessellation of the given point. A local weak form over the local Delaunay triangular sub-domain is used to obtain the discretized system of equilibrium equations. The numerical results show the presented method is easy to implement and very accurate, especially for solving the problems of crack propagation or large deformations.
Urban Competitive Power Difference Study of the Urban Agglomeration on the West Side of Taiwan Straits on Grey Relational Synthetic Evaluation
Authors: Zhong Xue Si , Chen Wei , Lian Chao
Published: December 2011

There is important significance in theory and practice to study the competitive power of the urban agglomeration on the west coast of the strait for promoting sustainable economic development of the urban agglomeration on the west coast of the strait. According to constructing evaluating index system of urban competitive power difference of the urban agglomeration on the west coast of the strait and the Grey Relational Synthetic Evaluation is adopted to evaluate and compare the competitive power of the urban agglomeration on the west coast of the strait. The study finds that the sequence of urban competitive strength of the urban agglomeration on the west coast of the strait is Fuzhou, Xiamen, Quanzhou, Zhangzhou, Ningde and Putian; And the competitive power shows imbalance difference distribution with ‘four groups’ that is Leading Group, Challenging Group, Catching-up Group and Backward Group, finally suggestions that shortening the non-equilibrium differences of urban competitive power between the four regions are put forward.
Wear Properties of Anode Oxidation Coating in the Surface of ZL101 Aluminium Alloy
Authors: Wang Zhi Ping , Yuan Feng
Published: December 2011

The oxidation film was prepared by anode oxidation method on ZL101 aluminium surface, its morphologies, compositions and phases were characterized with SEM (Scanning Electron Microscope), optical profiler, EDS (Energy Disperse Spectroscopy), respectively, its friction coefficient and abrasion performance were analyzed by wear test, and its wear mechanism was discussed. The results show that the thickness of anode oxidation layer is about 35-40m, under dry friction condition, sliding friction coefficient is 0.65-0.72, the wear forms are abrasive attrition and adhesion wear, the low friction pair between furrows effect and adhesion effect improves the wear performance of anode oxidation film on ZL101 aluminum alloy surface.
A Hybrid Model for Evaluation Computer Network Security Risk in Commercial Bank
Authors: Shen Li Xiang , Cao Guo , Cao Su Zhen
Published: December 2011

Given there is a great deal of correlation among indicators in the process of computer network security risk assessment, the handling of correlation is of great significance for the effectiveness of risk assessment. In this paper, we propose a hybrid computer network security risk model based on the analytic hierarchical process and gray relational analysis theory. At fist, the weight of each indicator will be elicited by means of analytic hierarchical process. Further, gray relational analysis theory will be used for the final evaluation, which avoids subjective estimation of experts or managers of banking. Finally, the model is further demonstrated and validated via a case study, and the result implies that the assets and vulnerability may be the most important factor for network security management.
A Mathematical Model for Aerobic BAC System to Treating of Drinking Water
Authors: Lin Chang Qing , Bi Dong Su
Published: December 2011

In this paper, a mathematical model of aerobic BAC (biological actived carbon) system is developed based on previous work. The BAC model is divided into two parts, the system model and GAC(granular activated caarbon)/ biofilm particle model. Changes in substrate and biomass concentration in bulk fluid, solid phase volume change as a result of biofilm growth and other operation parameters are included in the system model. GAC/biofilm particles are considered as substrate sinks in this part of the model. In the GAC/biofilm particles model, substrate uptake resulting from biodegradation and carbon adsorption are computed simultaneously.
A New Algorithm of Fast-Generated Panoramic Images
Authors: Na Wei Cong
Published: December 2011

The new algorithm of fast-generated panoramic images this paper puts forward is to extract the feature points of images by the improved SIFT algorithm, and use Euclidean distance combining the K-D tree structure to realize the rapid initial feature matching. Then, based on these initial matching points and the theory of random sampling consistent algorithm, the purification of feature points is realized. At last, the introduction of correction coefficient makes it possible to eliminate fusion ghosts, and HIS space image fusion is applied in order to eliminate the brightness differences. It is verified by the experiments that on the premise of generation of quality guarantee, the new algorithm greatly improves the generation efficiency of panorama images.
A Study on the Mooring-Line Force Characteristics of Composite-Type Sea Cage
Authors: Li Chun Liu
Published: December 2011

The aim of this paper is to analyze the mooring-line forces and draw the layout types of composite-type sea cages suitable for deep-sea. Through physical model tests the mooring-line forces were tested respectively under pure current, pure wave and wave combined with current conditions, and the test results showed that 1.composite-type sea cage should adopt uniform layout;2. The number of sea cages increased within certain limits has no significant effect on the maximum of mooring-line force; 3. Sea cage should be arranged vertically with the flow when environmental were controlled mainly by water flow,if only from the perspective of the force;4. Sea cage should be arranged along the direction of wave propagation when environmental were mainly controlled by waves.
An Analysis on the Carbon Content Rate of Natural White Birch in Xiaoxinganling Mountain Area
Authors: Lin Ma , Li Feng Ri , Jia Wei Wei
Published: December 2011

This paper applied dry combustion method to determinate the carbon content rates in different organs of natural white birch trees in xiaoxinganling mountain area and carried on the analysis and comparison. The results showed that: the average carbon content rates of leaves,branches,trunks and roots was 49.31 %,46.60,46.70%,45.67%,respectively.According to the average values, the sequence of carbon content rates in different organs from the maximum to the minimum was leaves,trunks,branches and roots. Additionally, in different layers of a tree, the sequence of carbon content rates in leaves from the maximum to the minimum was: the upper strata, the middle strata, the lower strata. The sequence of carbon content rates in branches was: the upper strata, the lower strata, the middle strata. The sequence of carbon content rates in trunks was: bark, sapwood, heartwood.The sequence of carbon content rates in roots was: level 2 root, level 1 root, level 3 root. Single tree average rate of carbon 46.49% Higher than 51.25% in northern China. Variance analysis showed that the differences of Bark and sapwood achieved significant level (p<0.05) as well as the differences of bark and heartwood, while the rest were not significant.
An Investigation on the Gaseous and Electrochemical Hydrogen Storage Kinetics of As-Spun Nanocrystalline Mg20Ni10-xCOx (x=0-4) Alloys
Authors: Li Bao Wei , Ren Hui Ping , Hou Zhong Hui , Liu Xiao Gang , Chen Le Le , Zhang Yang Huan
Published: December 2011

In order to improve the gaseous and electrochemical hydrogen storage kinetics of the Mg2Ni-type alloys, Ni in the alloy was partially substituted by element Co. Melt-spinning technology was used for the preparation of the Mg20Ni10-xCox (x=0, 1, 2, 3, 4) hydrogen storage alloys. The structures of the as-cast and spun alloys are characterized by XRD, SEM and TEM. The gaseous hydrogen absorption and desorption kinetics of the alloys were measured by an automatically controlled Sieverts apparatus. The electrochemical hydrogen storage kinetics of the as-spun alloys is tested by an automatic galvanostatic system. The results show that the as-spun Co-free alloy holds a typical nanocrystalline structure, whereas the as-spun alloys substituted by Co display a nanocrystalline and amorphous structure, confirming that the substitution of Co for Ni facilitates the glass formation in the Mg2Ni-type alloy. Both the melt spinning and the substitution of Co for Ni evidently ameliorate the hydriding and dehydriding kinetics and the HRD of the alloys. With an increase in the spinning rate from 0 (As-cast was defined as spinning rate of 0 m/s) to 30 m/s, the hydrogen absorption saturation ratio ( ) of the Co4 alloy grows from 77.1 to 93.5 wt.%, the hydrogen desorption ratio ( ) from 54.5% to 70.2%, the HRD from 60.3% to 76.0%, respectively.
Application of Comprehensive Reinforce Technology in Soft and Crumbly Surrounding Rock in High Stress
Authors: Du Bing Shen , Ma Li
Published: December 2011

Based on soft and crumbly surrounding rock of roadway, poor integrity of roof, drench water in roadway, the large in-situ stress and other complex conditions, this paper analyzes the cause of roadway destruction and grouting strengthening mechanism, using the coupling of grouting technique to integrated strengthening for the region. Engineering application shows that the integrated strengthening effect is obvious, and the economic and technique effectiveness is remarkable. The successful application of secondary coupling grouting technology provides the reference for the mine laneway construction of similar geological conditions.
Characterization of Codon Usage Bias in UL13 Gene of the Duck Plague Virus
Authors: Hu Xi Xia , Cheng An Chun , Wang Ming Shu
Published: December 2011

A comprehensive analysis of codon usage bias of DPV UL13 gene (GenBank Accession No. EU195098) was performed to provide a basis for understanding the relevant mechanism for its biased usage of synonymous codons and for selecting suitable expression systems to improve the expression of UL13 genes. Our study showed that codon usage bias of DPV UL13 gene strongly prefered to the synonymous with A and T at the third codon position. And ENC value and GC3s contents of the codon usage bias of UL13 gene in DPV were significantly different compared with those in other 21 reference herpesviruses. The phylogentic analysis about the putative protein of DPV UL13 and the 21 reference herpesviruses revealed that DPV was evolutionarily closer to the AnHV-1. In addition, the codon usage bias of DPV UL13 gene was compared with those of E. coli, yeast and human. There are 23 codons showing distinct usage differences between DPV and E. coli, 12 codons between DPV and yeast, 21 codons between DPV and human. Therefore, the yeast expression system is more appropriate for heterologous expression of the DPV UL13 gene.
Comparative Analysis of p53 and K-ras Gene Mutations in Gastric Cancer Tissue
Authors: Zhang Ai Mei , Sun Kun , Wang Rong , Xie Hua
Published: December 2011

Mutations of p53 and K-ras gene have been proven to play important roles in human tumor progression. Point mutations of p53 gene located in codon 282 and K-ras gene located in codons 61 are both gene hot spot mutation regions in patients with gastric cancer. The polymerase chain reaction (PCR) fragments included codon 282 of p53 and codon 61 of K-ras gene. The PCR fragments were analyzed by single-strand conformation polymorphism (SSCP) combined with CE and polyacrylamide gel electrophoresis (PAGE). Forty-two gastric cancer patients were analyzed using two developed method. P53 gene mutation was found in 24 cases (57.2 %) and K-ras were 17 cases (40.5 %). The results showed that p53 and K-ras gene mutation in gastric cancer tissue is a usual event, and the SSCP-CE was feasible for mutation detection of p53 and K-ras gene in populations. Combined detection of p53 and K-ras gene mutations of gastric cancer tissue by PCR-SSCP has a certain value to diagnosis of gastric cancer.
Effect of High-Energy Shot-Peening on H13 Tool Steel Ion-Nitriding
Authors: Ren Zhi Lan , Wang Xin Heng
Published: December 2011

High-energy shot-peening on H13 steel after quenched. The samples with or without high-energy shot-peening were ion-nitrided at 520°C for 3h．The Microstructure，nitriding depth, hardness gradient, surface phase and Corrosion resistance of the nitride layers were compared between the high-energy shot-peening samples and the original samples using optical microscope, micro-hardness tester, X-ray diffraction and CH1660A electrochemical test. Results show that the high-energy shot-peening greatly speeds up the nitriding on the H13 steel at 520°C for 3h.. The depth of ion-nitriding layer after shot peening is from 0.11mm to 0.16mm, micro-hardness of the surface layer is from 998HV0.5 to 1105HV0.5, The hardness gradient is slightly flat . Phase structure and content of the surface is different by Powerful shot-peening and not. Corrosion resistance of the samples by high-energy shot-peening is significantly improved because it is easier to form a stable passive film.
Effects of Storage Conditions on the Shelf Life of Liquid-Smoked Tilapia (Oreochromis niloticus) Fillets
Authors: Chen Sheng Jun , Li Lai Hao , Xue Chang Hu , Yang Xian Qing , Wu Yan Yan , Hao Shu Xian , Cen Jian Wei , Qi Bo
Published: December 2011

In this study, the pH, total volatile base nitrogen (TVB-N) amounts, total viable counts (TVC) of microbial flora, and the sensory quality of liquid-smoked tilapia fillets were analyzed under different storage conditions. Lengthy storage caused, the smoked flavor to disappear and juice seeped from the samples. Over time, it was found that the pH of the products decreased and then subsequently increased, whilst the amount of TVB-N showed an overall increasing trend. Under all storage conditions tested, the TVC of microbial flora slowly increased, followed by a sharp increase, and then stabilized. These results showed that vacuum-packed products stored at low temperatures were highly stable; hence this storage method can effectively guarantee the quality of liquid-smoked tilapia fillets and the extension of the shelf life.
Effect of Nb2O5 Addition on the Physical and Electrical Properties of Lead-Free (Na0.5Bi0.5)TiO3 -Ba(Sn0.08Ti0.92)O3 Ceramics
Authors: Wang Chun Huy
Published: December 2011

In this paper, (Na0.5Bi0.5)TiO3 -based solid solutions were studied to improve piezoelectric properties as those found in the PbZrO3-PbTiO3 (PZT)-based ceramics. The 0.98(Na0.5Bi0.5)TiO3 -0.02Ba(Sn0.08Ti0.92)O3 (0.98NBT-0.02BST) ceramics with the addition of 0~2.0 wt.% Nb2O5 have been prepared following the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all of the Ba(Sn0.08Ti0.92)O3 diffuse into the lattice of (Na0.5Bi0.5)TiO3 to form a solid solution, in which a hexagonal phase with a perovskite structure was found. For 0.98NBT-0.02BST ceramics with the addition of 0.5 wt.% Nb2O5, the electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.12 and 0.28, respectively, at the sintering of 1100oC for 3 h. The ratio of thickness coupling coefficient to planar coupling coefficient is 2.3. It is obvious that 0.98NBT-0.02BST ceramics by adding low quantities of Nb2O5 are one of the promising lead-free ceramics for high frequency electromechanical transducer applications.
Effects of Zeolite Modified LDPE Film on Banana Fresh Keeping
Authors: Li Dong Li , Shi Qing Ping , Xu Wen Cai
Published: December 2011

Ethylene is a kind of plant hormones, which can promote postharvest fruit mature and age rotten. Banana is a typical type of after-ripening fruit, and very sensitive to ethylene, and it can get decay easily in the process of transportation and selling, which results in shortened shelf life. Considering the situations above, self-made with zeolite that adsorption of ethylene. And then to have the zeolite melted blending with the LDPE film, prepared five kinds of different modified films with ethylene adsorption. Through experiment and analyzing the quality changes of banana packaged in those five modified films, the following conclusion that LDPE with 2% zeolite had a better preservation of bananas was obtain.
Experimental Study on Aging Oil Dehydration Technology Optimization in Yushulin Oilfield
Authors: Zheng Wu Long , Pang Ren Shan
Published: December 2011

As the oilfield development entering into the stage of high water cut, more and more aging oil is produced during oil production, transmission and ground treatment processes due to the changes of mining and transportation mode. The emulsion has a strong stability because of the complicated ingredients of the aging oil. So the conventional dehydration methods are hard to reach the dehydration effect. Therefore, to make sure the aging oil dehydration meet the quality requirements, ensure the oilfield production system running smoothly, enhance the economic efficiency are very important. So the ultrasonic, thermal chemical and electrical impulses are further carried out. Through the experimental results, it is obvious that under the conditions of the 2 kHz in power frequency, pulse dehydration time for 90~120min.
Fabrication and Characterization of Core-Shell Structured Composite Nanofibrous Scaffolds by Coaxial Electrospinning
Authors: Ye Qing , Zhang Kui Hua , Ke Sheng Bao , Wang Chao Liang , Zhang Hong Yi , Wang Jian Ye
Published: December 2011

Biodegradable core-shell structured nanofibrous scaffolds with silk fibroin (SF) and poly(L-lactic acid-co-ε-caprolactone) (P(LLA-CL)) blends as shell and bovine serum albumin (BSA)-containing SF as core were fabricated by coaxial electrospinning. Morphology and microstructure of the nanofibers were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results demonstrated that core-shell structured nanofibers were obtained, furthermore, the nanofibers became greatly uniform and the average diameters were thinner in comparison with only core BSA solution after adding 10-20 w/v% SF in core BSA solution. The 13C NMR clarified the SF conformation transformed from random coil to β-sheet when treated with 75 w/v % ethanol vapor. The mechanical test showed core-shell structured nanofibrous scaffolds possessed good mechanical properties but lower than SF/P(LLA-CL) blended nanofibrous scaffolds.
Modification of Bleached Softwood Pulp with Xylanase
Authors: Du Min , Li Xin Ping , Li Wu Guang
Published: December 2011

Xylanse named as Pulpzyme HC was used to modify bleached softwood pulp before refining. The efficiency of modification by different enzyme dosage was invested in this paper. The result showed that enzymatic treatment decreased the dissolved charge and absolute Zeta potential of the slurry and increased the fiber surface wettability. Appropriate Pulpzyme HC (0.4u/g) could improve the refining efficiency by 9.5°SR. The brightness and bulk of hand sheets increased with the increasing of the enzyme. Tensile index and tear index of hand sheets reached the maximum at the enzyme dosage of 0.2u/g. In this dosage, fiber length, knot index and curl index of fiber increased. But excessive enzyme decreased the tear index and had no effect on the tensile index.
Preparation Cordierite-Mullite Composites with Iron Tailing
Authors: Li Feng Feng , Yang Wei Chao , Zhang Ming Xi , Zhang Li Fang , Shen Yi
Published: December 2011

Cordierite–mullite composites were prepared by using iron tailing, burn talc, suzhou soil, knar clay and alumina powder as raw materials. The main influencing factors such as the molar ratio of cordierite to mullite, amount of iron tailing and calcination temperature were discussed. The microstructure of the sintered sample was analyzed with X-ray diffraction (XRD) and Scanning electron microscopy (SEM). The results show that the optimal prescription was V sample (36.4635wt% of iron tailings, 13.6813 wt % of burn talc, 10.2154 wt % of suzhou soil, 3.8405 wt % of knar clay and 35.7984 wt% of alumina), and its sintered material contains about 50% of mullite and 50% of cordierite;The optimal sintered temperature was 1250°C and the holding time was 2 hours. The bending strength of the sample is 29.79MPa and the thermal shock resistance expriments are above 60 times.