bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis, Characterization and Antitumor Activities of Cis-Chlorogenic Acid[(1R,2R)-1,2-Cyclohexanediamine] Platinum(II)
Authors: He Jian , Wang Qing Kun , Li Xue Jie , Pu Shao Ping
Published: January 2014

Abstract. In order to obtain a chlorogenic acid platinum complex, The intermediate Pt(C6H14N2)(H2O)2(NO3)2 solution was synthesized from Pt(C6H14N2)I2 and AgNO3, and it was treated with the anion exchange resin to give the key intermediate Pt(C6H14N2)(OH)2. The key intermediate was subsequently reacted with chlorogenic acid in butyl alcohol. The complex structure and component were characterized by elemental analysis, ESI-MS, 1H-NMR and IR and the anticancer activity was measured by MTT method. The result showed that its structure was consistent with the title compound and had inhibiting effect on the growth of tumor cell lines in vitro.
Properties of Three Commercial Orthodontic Round Stainless Steel Wire
Authors: Tangit Nathaphon , Dechkunakorn Surachai , Anuwongnukroh Niwat , Churnjitapirom Pornkiat , Tua-Ngam Peerapong
Published: January 2014

Objective: This study aimed to determine and compare the diameter, mechanical properties (tensile strength: flexural strength, flexural modulus of elasticity, 0.2% yield strength and springback: three point bending test: bending stiffness and 0.1mm. offset bending force) and chemical properties (composition and corrosion resistance) of three commercial orthodontic round stainless steel wires.
Materials and Method: The samples of this study are three commercial brands of orthodontic round stainless steel wires, Highland (USA), Dentaurum (Germany) and W&H (China), 0.016 inch and 0.018 inch in size. The diameter was measured by micrometer and the mechanical properties were analyzed with tensile strength and three point bending test by Universal Testing Machine according to ISO 15841:2006. The composition was evaluated by Energy Dispersive X-ray Spectrometer (EDS) and the corrosion resistance was analyzed by a potentiodynamic polarization technique according to ISO 10271:2001. The data were analyzed with the Kolmoforov-Smith test, One-way ANOVA and Tukeys test.
Results: There were significant differences (p<0.05) in diameter of the three commercial brands of orthodontic round stainless steel wires in both size except 0.016 in diameter between Dentaurum and Highland stainless steel wire. In terms of tensile strength, there were significant differences (p<0.05) in the flexural strength, flexural modulus of elasticity and springback in each variable, except W&H stainless steel wire with flexural strength in 0.016 and 0.018 wire size and springback in 0.018 wire size. However, in 0.2% yield strength, there was no significant difference in each brand and size except Dentaurum and Highland stainless steel in 0.018 wire size. For the three point bending test, there were significant differences (p<0.05) in bending stiffness and 0.1mm. offset bending force of each brand and size except 0.1mm. offset bending force between Dentaurum and Highland stainless steel in 0.016 wire size. In terms of chemical properties, there were the same elements but difference was found in percentage of each element, and W&H stainless steel had the least corrosion resistance.
Conclusion: There were significant differences among three commercial orthodontic stainless steel wires in diameters, mechanical properties and chemical properties which will produce different force on each wire during tooth movement. All three brands, however, are acceptable for orthodontic use. The orthodontist should be aware of these differences in using stainless steel for orthodontic treatment.
Axial Compression Behavior of Masonry Prisms Considering the Influence of Mortar
Authors: Zhou Xiao Hong
Published: January 2014

As one of most widely used structure, the behavior of masonry is influenced by its composition especially the mortar. In this paper, a series of compression tests was carried on masonry both with mortar (MP_m) and without mortar (MP_ds). Based on the results, the ultimate compression strength and elastic modulus has been compared firstly; after that, the failure mode of each prism was achieved, finally a finite element model was built for the numerical analysis on MP_ds. Results showed that compared with the MP_m, the elastic modulus of MP_ds has been reduced 30% which means the erosion of mortar should be considered when research on the historic masonry structures. The finite element model can simulate the compression strength and failure mode accurately, which showed great potential for the further parametric analysis.
Calculation Method of Flexural Capacity under Limitation Failure of SRHC Beams Strengthened with FRP
Authors: Zhou Le , Nie Xiao Mei , Bai Yun Hao
Published: January 2014

To solve the problem of SRHC beam strengthened with FRP(Fiber Reinforced Polymer),a new renovate SRC beam of strengthened with FRP has been brought forward in this paper.In this paper, the load-deformation process,flexural failure characteristics of SRHC beams strengthened with FRP were researched by a new practical superposition method, the damage and bearing capacity under the limitation failure of SRHC beam strengthened with FRP are studied. In addition, according to the different positions of central axis and section of steel, the compressive region height under the limitation of three destroy is put forward. Compare the relation between the compressive region height with the distance of top flange of steel to the compression flange of concrete, hence, a applied formula to the different flexural capacity under the limitation failure of beams strengthened with FRP, the concept of presented equation is convenient for use.
Influence of Proportion Polyol/Pre-Polymer Castor-Oil Resin Components in Static Bending Properties of Particleboards Produced with Pinus sp.
Authors: Ferro Fabiane Salles , de Almeida Diego Henrique , Magalhães de Souza Amós , Icimoto Felipe Hideyoshi , Christofóro Andre Luis , Lahr Francisco Antonio Rocco
Published: January 2014

The aim of this research is to evaluate the influence of castor-oil based polyurethane resin formulation (particularly proportion pre-polymer/polyol) in static bending properties of particleboards produced with Pinus sp. wood specie. Results related to modulus of rupture (MOR) and modulus of elasticity were determined. Four proportions polyol/pre-polymer were evaluated: 0.75:1; 1:1; 1:1.25; 1:1.5. Results showed improvement in MOR and MOE with increase of pre-polymer component. Proportion 1:1.25 (poliol: pre-polymer) was considered the most interesting once employs the least amount of the petroleum-derived component.
Flow Field Analysis of PVC Polymerizer
Authors: Hao Hui Di , Cheng Tian Qi , Zhang Yong Fang , Zhu Na , Lei Jian Yong , Zhai Tian
Published: January 2014

Stirred tank reactor is one of the three typical chemical machinery equipments and widely used in petroleum, chemical, pharmaceutical and other industrial fields .It is the basis of understanding the flow of fluid in stirred tank for optimizing design of reactor. This paper aims at the process of suspension polymerization of polyvinyl chloride (PVC) which is an important raw material of chemical production, and uses conventional design method to design the PVC stirred tank of 50m3 from the structure design. According to the fluid dynamics theory, standard K-E turbulent calculation model is established under the function of impeller, the corresponding boundary conditions are listed, and the grid is carried out successfully. And finally the FLOTRAN CFD software is used to simulate the complex flow field and flow pattern according to the multiple reference frame method.
The Activation of Steel Slag and its Application in Construction and Building Materials
Authors: Li Lan Lan , Zhao Feng Qing , Liu Shao Jie
Published: January 2014

Steel slag as the discharged residue during steelmaking process is a kind of industrial solid waste, accounting for about 15 to 20 percent of crude steel in production. Steel slag is mainly similar with cement clinker in mineral and chemical composition, and possesses potential hydration reaction activity. The properties of steel slag, the research progress of activation and volume stability were summarized in this paper. Several approaches of steel slag utilization in construction and building materials were introduced. The combined use of various activation methods and proper treatment will increase the volume of steel slag in autoclaved tailings bricks and aerated concrete block.
Influence of Zirconium Oxide on Thermal Degradation and Flame Retardancy of Viscose Fibers
Authors: Song Cui Cui , Ji Quan , Li Chun Xia , Quan Feng Yu , Xia Yan Zhi
Published: January 2014

We have investigated the effect of zirconium oxide on the thermal degradation and flame retardancy of viscose fibers. ZrO2/cellulose fiber was prepared by wet spinning. Combustion behaviour and flammability were assessed using the limiting oxygen index (LOI) and thermogravimetric analysis from ambient temperature to 800°C and cone calorimetry. LOI results showed that the ZrO2 increased the LOI of viscose fiber from 20% to 26%, which showed that ZrO2 particles had a positive effect on cellulose flame-retardancy. Results from thermogravimetric analysis (TG) indicated that the ZrO2/cellulose fibers produced greater quantities of residues than viscose fibers. The combustion residues were examined using the scanning electron microscopy, indicating that ZrO2/cellulose fiber produced consistent, thick residues. Cone calorimetry indicated that heat release rate and total heat release values of ZrO2/cellulose fiber were less than those of viscose fibers.
Molecular Design and Synthesis of Wettability Alteration Chemicals
Authors: Zhou Ming Hui , Sun Wen Jie
Published: January 2014

Many gas-condensate reservoirs experience a sharp drop in gas production owing to condensation near the wellbore as pressure drops lower than the dew point. It has been a challenge for a long time to develop cheaper chemical to stop the dramatic decline in gas production. In this study several molecule formulas are designed, properties of two chemicals for wettability alteration are predicted using molecular modeling method and then synthesized. Analysis result shows high conformity between the prediction and experimental properties.
Experimental Study on Geometric Optimization of Thermoelectric Generation
Authors: Zhu Chao , Hong Yan Ji , Cheng Fu Qiang
Published: January 2014

Thermoelectric generation (TEG) produces electric energy from thermal energy directly, stably and environmental-friendly. As is pointed out, TEG performance is influenced by not only the intrinsic property of the material, but also the geometry designed, the operation conditions and the load scale as well. This paper intend to indicates how the temperature differential and the load resistance influence the output, how geometry demonstrate the performance of a TEG by experimental method. Test results is quite fit for the theoretic analysis.
Corrosion Inhibition of Sodium Hexametaphosphate for Carbon Steel in KCl Solution
Authors: Huang Bin , Qiao Kang Quan , Cui Yi Shun
Published: January 2014

The influence of sodium hexametaPhosphate on the corrosion of carbon steel in 0.5 mol•L-1 KCl solution at 25 °C was investigated using weight loss measurements, potentiodynamic polarization curves and Scan electron microscope (SEM). The obtained results show that sodium hexametaPhosphate is an excellent inhibitor and the inhibition efficiencies exceed 87 %. The polarization measurements reveal that sodium hexametaPhosphate is an inhibitor mainly controlled by anodic process.
Characteristics of Deposition Precipitation Process in Production of High Strength and Low Carbon Steel in FTSR
Authors: Song Zhuo Fei , Feng Shan Shan , Feng Yun Li
Published: January 2014

Precipitation characteristics of second phase in HSLC steel produced by FTSR technology have been researched by TEM and EDS in this article. And preliminary research of precipitation conditions of second phase particles in thermodynamics and dynamics have been took. The results indicate that: there’re second phase particles precipitated dispersively in hot rolled HSLC steels by FTSR technology. These particles mainly contain particles of Al2O3、MnS and AlN. Thermo dynamical analysis declares that most of the Al2O3 and all of the MnS、 AlN particles are precipitated in solid state. That’s why the precipitation process is slowed down by the diffusion velocity of the elements in solid, and thinner particles are precipitated while the material is in solid state than in liquid state.
Rotation Feature of Three-Dimensional Tile Self-Assembly Molecular Structure for Efficient Microprocessor Material
Authors: Liang Zhuo Qian , Li Jing
Published: January 2014

Future application of nanoscale tile self-assembly is the production of smaller, more efficient microprocessors.In this paper, a new three-dimensional tile self-assembly molecular structure is presented.The model adds rotation movement where large assemblies of nanoscale tile molecules can be moved around, analogous to molecular motors. We have showed the universalityof the new model and demonstrated that three-dimensional model is capable of simulating two-dimensional model. This paper also covers the details about path encoding. The encoding process makes use of edgecharactersof tilesto simplify the design.
Synthesis and Photochromism Studies of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)-3-thienyl]perfluorocyclopentene
Authors: Dong Xiao Rong , Wei Sha Sha , Liu Gang , Pu Shou Zhi
Published: January 2014

A new unsymmetrical photochromic diarylethene compound, 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)-3-thienyperfluorocyclopentene (1a) was synthesized, its photochromic properties were examined, the result indicated that the Diarylethene 1a changed the color from colorless to purple upon irradiation with 297 nm UV light, in which absorption maxima were observed at 564 in acetonitrile. The photochromic reaction kinetics indicated that the cyclization processes of 1a belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction. This new photochromic system also exhibited fluorescence switching in acetonitrile solution.
Efficient Synthesis and Properties of a Photochromic Hybrid Diarylethene Bearing a Pyrimidine Moiety
Authors: Yu Xiao Dong , Liu Hong Liang , Liu Gang , Pu Shou Zhi
Published: January 2014

A novel photochromic diarylethene bearing a six-membered pyrimidine as one aryl moiety was synthesized to investigate its photochromic behaviors. The diarylethene exhibited good photochromism and functioned as a fluorescence switch both in hexane and in PMMA film. The fluorescence had a remarkable initial increase with subsequent dramatic decrease with increasing concentration. The results suggested that the pyrimidine moiety played a vital role during the process of photoisomerization reaction for the diarylethene.
Synthesis and Properties of 1-[(2-methyl-5-chloro)-3-thienyl]-2-[(2-methyl-5-(2-fluorophenyl)-3-thienyl]perfluorocyclopentene
Authors: Zhang Cong Cong , Xu Hong Yan , Pu Shou Zhi
Published: January 2014

A unsymmetrical photochromic diarylethene which called 1-[(2-methyl-5-chloro)-3-thieny-2-[(2-methyl-5-(2-fluorophenyl)-3-thienyperfluorocyclopentene (1a) was synthesized and their properties such as photochromism in solution as well as poly-methylmethacrylate (PMMA) amorphous films, fluorescences and reaction kinetics properties were investigated in detail. The dithienylethene has shown good photochromic behavior both in solution and in PMMA amorphous films.
Effect of Bore Liquid Flow Rate on the Structure and Performance of Poly(vinyl chloride) Hollow Fiber Membrane
Authors: Qiu Yun Ren , Han Huan Na
Published: January 2014

Poly (vinyl chloride) (PVC) hollow fiber membranes were prepared via non-solvent induced phase separation (NIPS), the effect of bore liquid flow rate (BLFR) on the structure and properties of the membrane were investigated. The results show that the prepared PVC hollow fiber membrane has a finger-sponge-finger-like structure, the thickness of the sponge-like intermediate layer decreases with the increase of BLFR. Both the inside diameter and outside diameter increase, while the wall thickness of the PVC hollow fiber membrane decreases with the increase of BLFR. The tensile strength and elongation decrease, the permeate flux increases, while the rejection of the particles decreases little with the increase of BLFR.
The Way of Obtain C5H7O+ Fragments Laser-Induced by Cycloheptanone Ion Excited State
Authors: Chen Hong Bin , Zhu Ying , Wu Jie
Published: January 2014

Our theoretical study aims to the way of obtain C5H7O+ fragments laser-induced by Cycloheptanone ion (C7H12O+) excited state and gives out a result with proved and directed significance for the corresponding experiments. Using the CIS（Configuration Interaction with Single Substitute） method, calculated cycloheptanone ion excited state structure and vibrational frequencies.
Studies on Synthesis Mechanism of Fe-Si Alloy
Authors: Li Hui , Liang Jing Long , Li Yun Gang
Published: January 2014

In this work, Molten Salts Electrodeposition has been employed to produce Fe-Si alloy. Technological parameters including influence of Molten Salts Electrodeposition technic in aggradation layer appearance and distribution of silicon content along with thickness. The results also show that the size of superficial particles on deposit layer increased gradually, the thickness of deposit layer was proportional to the current density on the deposit layer of Fe-Si. According to the characteristics of ferrosilicon alloy material, configure several kinds of etchant, and by comparing the changes in the microstructure determine the best etchant of ferrosilicon alloy sediment.
Hard Template Route for Synthesis of Mesoporous Spinel Type Oxides with Ordered Structure
Authors: Shen Wei Hua
Published: January 2014

The binary mesoporous spinel oxides with high surface area have been synthesized by using KIT-6 and SBA-15 as hard templates and hydrated nitrated salts as precursors. Low temperature such as 500 °C is suitable for preparation of NiCo2O4with spinel phase. High temperature such as 800 °C is necessary for preparation of NiMn2O4, MnCo2O4, and (Co0.5Mn0.5)3O4with pure spinel phase. The prepared mesoporous spinel shows high surface area as 43-105 m2/g with pore volume as0.095-0.233 cm3/g. It is preferred to form mesoporous NiCo2O4with spherical particles.
Three-Dimensional Electrode Used for Low Concentration Wastewater Containing Cu2+
Authors: Wang Yu Ling , Sun Ying
Published: January 2014

Three-dimensional electrode method is especially suitable for the treatment of low concentration wastewater containing Cu2+. Study the changes on the Cu2+ removal rate, under the condition of different electrode filling material (such as steel ball, activated carbon, activated carbon and resin). The results show steel ball as filling-material is best. Steel ball has higher removal efficiency of Cu2+, up to more than 80%. Steel ball as filling-material the effect of electrode distance on Cu2+ removal is smallest. Compared with steel ball as filling-material, the response time of activated charcoal is no obvious disadvantage.
Effect of Temperature and Pressure on the Nitrogen Content of High Nitrogen Steel
Authors: Zhang Rong Hua , Wu Biao
Published: January 2014

In this study, nitrogen content greater than 0.9% of 18Cr18MnN austenitic stainless steel were prepared by high pressure reaction kettle. The relationships between nitrogen content and temperature, pressure were studied. The results show the nitrogen content in steel increases with increasing melting pressure, at air pressure 1.0MPa<P<1.4MPa, the increase of nitrogen content in steel is evident particularly. In the 1813k<T<1913k temperature range, the nitrogen content in steel decreases with the increasing temperature, there are differences in variation in the temperature range. When temperature is up to 1813K, nitrogen content can be as high as 1.075%. The best thermodynamic condition of melting a nitrogen content of 0.9% 18Mn18Cr austenitic stainless steel is: pressure and temperature are 1.32MPa, 1873k, respectively.
Experimental Study of EGR on Performance and Emissions of a Turbocharged DME Engine
Authors: Wu Jun Hua , Zuo Fu Shan , Zhang Yong Hui
Published: January 2014

This paper presents anexperimental study on reduction of NOx emission of a turbochargedengine fuelled with DME by means of EGR. Effects of EGR rate on engineefficiency and emission behavior was evaluated. The results show that the EGRcould be used as an effective way to reduce NOx emission. NOx isreduced almost linearly with increase of EGR rate. At low load condition, theNOx emission is reduced by 80% with 40% EGR rate without any economypenalty. At high load condition, the same substantial reduction of NOx couldbe achieved with only 20% EGR rate. While the HC and CO emissions are increasedwith increase of EGR rate. However, it is worth noting that EGR had a negativeeffect on fuel consumption at high load. Low EGR ratio should be taken at highengine load condition.
Selection and Application of Green Packaging Materials
Authors: Ouyang He Zi
Published: January 2014

Under the situation of Global highly advocated green packaging from the point of the principle of green packaging design and based on the technical indicators of cardboard, this article analyzes the requirements for different products and provides the reference for the future design of green cardboard packaging.
Growth and Development of Feijoa with Different Plant Shape and in Greenhouses Environment
Authors: Li Jian Ke , Yang Jing Hui , Liu Yan Jun , Huang Jun Xun , Wu Chun Xia , Liu Ting , Gong Wu Que
Published: January 2014

In order to explore the relation between tree crown shape and growth development and age of tree, flowering plants, fruiting plants, bearing plants, bearing branch and floweret, length of bearing branch were studied in greenhouse environments after tree corm shape were divided into three groups by live crown ratio of crown width to height and angle from the central leader to first scaffold branch. The result showed that the plants of upright crown shape were 83% at age one year among all plants, 45% at age two years and tree crown shapes, open tree increased to 25% at age of three years. The flowering trees increased from 5% at age of one year to 55% in age of three years and fruit set increased from 0 to 44% following increase of age tree. Open trees had more flowers with 10.6 in 2-year-old tree, 38.6 in 3-year-old tree. Open trees had more percentage of bearing plants with around 47%. The average length of bearing branches was 11.5 cm at open trees, which was more than other crown shapes at age of three years. Open trees had most fruit number per bearing tree (6.5, 8.5 apart). Therefore, creating open tree crown shape may increase flowering, fruiting and yield in greenhouse production of feijoa.
On the Rigid-Lid Hypothesis Application to the Flow Simulation of Step-Feed A/O Process
Authors: Zhao Shen , You Xue Yi , Liu Sheng Jun , Huang Yu , Shi Feng , Lu Hong Bo
Published: January 2014

The feasibility of the rigid-lip hypothesis was studied in the flow field simulation of the reaction tank in the step-feed A/O process. Two models were built. One model applied the rigid-lip hypothesis was called as rigid-lid model and the other was called free surface model. The results showed that the velocity distribution of the rigid-lid model is basically consistent with that of the free-surface model. On the vertical monitor sections, the error of the mean velocity between the two models is less than 8%. The results showed that the much less expensive rigid-lid model is applicable to simulate the flow field of reaction tank.
Effect of Extrusion on Mechanical Properties of Spray Forming 8009 Heat Resistant Aluminum Alloy
Authors: Zhang Rong Hua , Zhu Bao Hong , Zheng Xiao Ping
Published: January 2014

The 8009 aluminum alloys were fabricated by spray forming and extrusion process. The microstructure and properties of the alloy were investigated by means of metallographic, scanning electron microscope and tensile test. The results indicate that at room temperature, the tensile strength of the extruded alloys can reach 415MPa, the yield strength 345MPa, elongation 22.5%. The tensile strength and yield strength of the alloys decrease with the increasing temperature, the plastic of alloys shows a down-up medium temperature brittleness law.
Hydroxycamptothecin Stealth Liposomes: Containing TPGS as a Novel PEGylated Long-Circulating Coating Material
Authors: Wang Hai Long , Liu Shan Kui , Qin Yao Yao , Chen Yun Gang
Published: January 2014

The goal of this study was to develop long-circulating liposomes of hydroxylcamptothecin (HCPT) with TPGS as a new coating material. Liposomes were prepared by a thin-film dispersion method with the lipids comprised phosphatidylcholine, cholesterol and TPGS. By contrast, other common PEGylated derivatives were also involved. HCPT-loaded liposomes with TPGS as coating material showed similar physicochemical characteristics andin vitrorelease profile to liposomes with DSPE-PEG or DPPE-PEG. It is suggested that TPGS can be applied as a novel coating material for long-circulating liposomes.
Preparation and Antibacterial Activity of One Novel Leather Material
Authors: Xie Jun , Jiang Xiao Qin , Ye Ya You , Teng Hao Kai , Wang Bing , Zhao Feng , Hu Zhi Wen
Published: January 2014

This work was designed to evaluate the antibacterial activity of one novel leather material treated with bactericides. The growth of bacteria species such as colibacillus and staphylococcus aureus were measured by the diameter of inhibition zone. The results showed that glutaraldehyde exhibits an antibacterial activity against colibacillus and staphylococcus aureus. Besides, it also is testified that 2-Octyl-4-isothiazolin-3-one was an excellent bactericidal agents to staphylococcus aureus, instead of colibacillus. The concentrations of tea saponin and sodium above 0.05mg/L, the growth of bacteria was restrained. In addition, compared with single of bactericidal agents, the mixture of two bactericidal agents showed much better antibacterial activity. Among these antimicrobial agents, the mxture of 2-Octyl-4-isothiazolin-3-one and glutaraldehyde were of great potential in application.
Research on the Second Phase of Spray Forming Al-8.5Fe-1.3V-1.7Si Aluminum Alloy
Authors: Zhang Rong Hua , Zhu Bao Hong , Zheng Xiao Ping
Published: January 2014

Heat-resistant Al-8.5Fe-1.3V-1.7Si aluminum alloys were prepared by spray forming technique. The phase transition of deposited alloys from room temperature to 500°C was measured by Differential Scanning Calorimeter. The organization and the second phases of the alloys were observed and studied by transmission electron microscopy. The research results show that No endothermic peak appears in the deposited alloys during heating process, there is no phase transition occur in the alloy during the heating process from room temperature to 500°C. The deposited alloys mainly include α-Al and α-Al12(Fe,V)3Si phase. Under the transmission electron microscopy, there are also a small amount of slug, fan-shaped, needle-like, block, strip second phases, these phases are Al12Fe3Si, Al8Fe2Si, θ-Al13Fe4, Al9FeSi3, Al6Fe.
Study on Electronic Materials with Performance of Meander-Line Inverted-F Antenna
Authors: Wu Jing Wei , He Wei , Su Dan , Mo Jing
Published: January 2014

Inverted-F antenna loaded meander-line was studied by using High Frequency Structure Simulator V11(hereinafter referred to as HFSS V11). Research had focused on main performance parameters of Inverted-F antenna which loaded different number of meander-lines and different height of meander-lines. According to research, main performance parameters of inverted-F antenna, such as resonant frequency, resonance impedance and S11 parameter of resonance point could be adjusted effectively. Inverted-F antenna could be miniaturized effectively by selecting appropriate number and height of meander-lines. The technology of loaded meander-line is a kind of simple and effective way that can be applied to the RFID field and other areas that have high requirements for miniaturization of antenna.
Research and Application of Slope Stability Analysis Method Based on Engineering Mechanics and Engineering Materials
Authors: Feng Shao Jie , Sun Shi Guo , Zhao Xue Fang , Tan Liang
Published: January 2014

Considering the features of slope rock mass failure, this paper applies residual thrust method and linear programming theory on the basis of finite element method, to assess safety of each cell of slope rock mass in dangerous zone. According to the slip field method to determine three-dimensional slope slip surface, to deduce three-dimensional stability analysis method based on symmetry breaking, a C++ based 3D-slope program is developed for purposes of three-dimensional slope stability analysis. Finally get the most dangerous landslide geometry and its safety factor, In the paper, combining with the engineering examples, the calculating results are comfortable to the practical failure.
The Surface Deformation Law with Engineering Mechanics Caused by Construction of Tunnels with Large Section and Small Interval
Authors: Li Jin Kui , Wang Yi Bin
Published: January 2014

There is a large section tunnel and neighboring tunnels in parallel with cross diaphragm method (CRD) and single excavation by drilling-blasting method at a subway station in Dalian. For the construction of shallow buried tunnels, this article has carried on the numerical simulation analysis of dynamic excavation in order to draw a law of surface deformation due to the interaction effect of CRD and drilling and blasting method by analyzing the surface subsidence in every sequential step. It is concluded that maximum ground settlement point affected by different construction stage and the influence of excavation caused by stress redistribution will keep away from or be close to the large cross section tunnel axis as the reference line whose maximum deviation value is the clear distance of 0.6 times; In different construction stages, the settlement decreases along with the increase of distance far away the maximum ground settlement point; Adjacent tunnel construction has a significant effect on the surface deformation.
Influence of Fracture Parameters on the Productivity of Fractured Horizontal Well Based on Fluid Mechanics in Tight Gas Reservoir
Authors: Zhang Hai Yong , He Shun Li , Luan Guo Hua , Lu Qiao , Mo Shao Yuan , Zhang Zhang , Lei Gang
Published: January 2014

Multiple fractures are needed by hydraulic fracturing in order to improve the horizontal well productivity of a single well in tight gas reservoir. The calculation accuracy of productivity influences on the fracturing optimization results and the success ratio and effectiveness of fracturing treatment. This work focuses on analyzing the influence of fracture parameters on fractured horizontal well productivity in tight gas reservoir through establishing a productivity prediction model of fractured horizontal well, considering the interference between fracture and fracture and the wellbore pressure drop. Results show that the fracture parameters, such as fracture number, fracture interval, fracture conductivity and fracture length, have different influences on the productivity of fractured horizontal well and thus, the effects of fracture parameters should be taken into account when designing the fracturing treatment.
Environmental Study with Analysis the Characteristics and Safety Distance of LPG Pool Fires
Authors: Yang Feng , Pu Jin Yun , Wu Xiang Jun
Published: January 2014

In order to study the characteristics and the safe distance of LPG pool fires, a modeling of the pressure leaked from storage tanks, and the fire characteristic parameter calculation model, and thermal radiation intensity prediction model for LPG pool fire, and for liquid flow leak pool fire case, using MATLAB software programming, obtained characteristics parameters of LPG pool fire and damage assessment, analyzed the effects of a cross wind on the flame size and shape and the thermal radiation, put forward a calculation method of the LPG pool fire safe distance, provide guidance for the fire tactics equation of safety equipment and storage tank area configuration.
Utilization Technology of Metallurgical Waste Heat
Authors: Li Hui , Liang Jing Long
Published: January 2014

Iron and steel industry is the key industry energy-saving emission reduction of industrial enterprises in our country, this paper analyzes the status quo of China's metallurgical industry waste heat utilization, proposed to the shortage of energy utilization. Then it introduces the use of technology and high heat resources in the metallurgical enterprise of each process, including sintering waste heat power generation technology, CDQ waste heat power generation technology, TRT power generation technology, saturated steam generation technology.
Research on Applied Technology in Modeling Buck Switching Converter
Authors: Han Chun Juan , Rui Fa Cheng
Published: January 2014

Now integrated PWM switching power supply has been used widely in the fields, like communication, computer, etc. In order to meet performance requirements of r portable electronic products for power, switching power supply must be developed mainly aimed at high efficiency, high-precision and small size. Combing a typical Buck converter, this paper uses state-space averaging method to establish a small signal model of the whole system.
Research on Information Technology with Character Pattern Recognition Method Based on Rough Set Theory
Authors: Liu Yong Li
Published: January 2014

Character Pattern recognition is widely used in the information technology field. This paper proposes a method of character pattern recognition based on rough set theory. By giving the characters two dimensional image, defining the location of the characteristic and abstracting the characteristic value, the knowledge table and table reduction can be ascertained. Then the decision rules can be deduced. Through the simulation of 26 English alphabets, the results illustrate this methods validity and correctness.
Research on Applied Technology in Comparison of the Traditional Inversion Method and the AIC Method
Authors: Zeng Ren Fen
Published: January 2014

Regularization item, subject to data misfit is used to stabilize the inversion problem. In selection of the trade-off parameter the Akaiche Information Criterion (AIC) has been applied to and compared to the chi-square misfit criterion. For the AIC we can achieve the trade-off parameter more conveniently by minimizing the AIC fuction. The result shows the AIC works well with an agreement to one accomplished from the Chi-square method. The result is very meaningful about applied technology of ocean science and geophysics.
Research on Information Technology with Wine Quality Evaluation Based on Neural Network
Authors: Zhu Rong Liang , Cao Yong Cun , Pu Qiu Mei
Published: January 2014

Use modern information technology to replace the traditional manual quality grade evaluation of red wine. According to the red wines 11 physical and chemical properties which have a great influence on the quality, a quality grade evaluation model based on BP neural network pattern classification is established in this paper. The input variables are the red wines 11 parameters, output are the quality levels for wine. Experimental results show that it is an effective wine quality evaluation method.
Experimental Research on Lead-Zinc Separation of Refractory Lead-Zinc Ore
Authors: Xie Xian , Hou Kai , Tong Xiong , Wang Xiao , Deng Zheng Bin
Published: January 2014

A complex lead-zinc sulfide ore from Inner Mongolia Autonomous Region, China, was subjected to this work. Research on mineral processing was conducted according to the properties of the lead-zinc ore. The lead minerals are successfully separated from the zinc minerals with the combination of collectors. Compared to CuSO4, new reagent X-43 as zinc activator shows its advantage in marmatite flotation. With the process utilized in this work, a lead concentrate of 59.67% Pb with a recovery of 78.69% and a zinc concentrate of 50.99% Zn with a recovery of 81.98% are produced. The silver recovery in the lead concentrate is 56.76% while the indium recovery in the zinc concentrate is 42.60%.
Information System in Image Classification Based on SVM and Color Clustering Analysis
Authors: Qi Li Ying , Wang Ke Gang
Published: January 2014

Effective use of the color feature of Content Based Image Retrieval (CBIR) and Image classification is an important basic research, but there are some shortcomings in the color histogram representation method, such as high dimension, pixels spatial information is ignored and so on. Although color feature data can reduce the dimension by quantification, but some useful image color information will be discard. In this paper, the image color information processing in space constrained fuzzy clustering to obtain a lower dimensional color feature data of the image characteristics of domain colors description, and use multi-class support vector machine to classify color images. Experimental results show that the proposed method can better describe image color information than color histogram; image domain color description combined with support vector machine model can achieve the automatic classification of images effectively.
Effect of Subcritical Quenching on Microstructure and Mechanical Properties of EH36 Alloy
Authors: Luo Xiao Dong , Zhu Yong Xiang , Liu Hao
Published: January 2014

Subcritical quenching is a kind of heat treatments, which have good strength and higher Plastic toughness. Through this process, the ship plate steels microstructure and performance can be promoted evidently. This article studies the effect of subcritical quenching temperature on the microstructure and performance of controlled rolling and controlled cooling (TMCP) EH36 ship plate steel with the thickness of 15mm,by mechanical properties text and optical microscopy. The results show that the comprehensive property of TMCP ship plate steel can be enhanced remarkably, its hardness and plasticity could be improved obviously,especially the low temperature impact property. With the increasing of quenching temperature,the grain grows,the impact property is decreased.
Applied Technology for Usage Control Model in Pervasive Computing
Authors: Liu Fei
Published: January 2014

During the applications development of pervasive computing, access control is new demands advanced by pervasive computing. Usage Control models are used to solve access control. This paper uses these models to solve problem of access control in Pervasive Computing environment and provides a model of Usage Control in Pervasive Computing (UCONpc), context information and delegation rights satisfy the features of access control in pervasive computing system.
Applied Technology in an Interactive System Design for ELT
Authors: Zhang Yi Fei , Ke Chun Yan
Published: January 2014

Information applied technology has greatly promoted ELT efficiency by means of resources sharing, distributing and optimizing. In order to demonstrate how to construct a highly efficient teaching system, the paper starts with its remarkable characteristics, further to introduce its design principles, puts emphasis on its model design, which include activities analysis, activities design, rules design and steps design, involving software choosing, MVC architecture and so on, bringing forward the understandings of designing principles, such as accessibility, adaptability, affordability, durability, compatibility and reusability.
Study on the Types of EOOPN Subnet Combination
Authors: Zhao Na , Wang Jian , You Jin Guo , Jia Xian Guang , Lyu Ying Ying , He Yun
Published: January 2014

The issue of software component subnet combination under EOOPN, a component evolutional mode based on extended object-oriented Petri net, was particularly focused on in this paper. Three types of combinations of EOOPN subnet, namely, place-fusion-based subnet combination, transition-fusion-based subnet combination and arc-adding-based subnet combination, were proposed. A formalized definition and detailed validity analysis of each combination were then presented by this paper.
Effect of Mineralizer Concentration on ZnO Crystals Synthesized by Hydrothermal Method
Authors: Zheng Wen Li , Yang Wei
Published: January 2014

In this paper, the ZnO crystal was synthesized using hydrothermal method through 24 hours reaction with 35 % filling factor at 430°C. When the mineralizer concentration is rather low (eg. lmol/L NaOH), only ZnO microcrystal is produced. The mineralizer concentration increases, the larger crystal was present. When 5 mol/L NaOH served as mineralizer, the extent of the synthesized crystal was nearly 500m. The ZnO cryslals with length of 1500m were present when 3ml/L KOH served as mineralizer. Respectively when 3mol/L NaOH and lmol/L KBr were used as mineralizer, the extent of the synthesized crystal was nearly 700m , the diameter was 200m and the exposed faces m { 100}, p { 101 } was complete , so we obtained the higher quality crystals. Besides the larger crystal, a great deal of microcrystal and nanocrystallites cluster was also present in the product.
Progress on Mg2Si Thermoelectric Materials
Authors: Luo Xiao Dong , Liu Hao , Xu Wen Lin , Zhu Yong Xiang
Published: January 2014

Mg2Si which is composed of less toxic and naturally abundant elements,has attracted more attention for its potential application to thermoelectric devices. In this paper, the basic performance and preparation technique of Mg2Si thermoelectric materials are introduced. reviewed the current research progress of Mg2Si thermoelectricity. And the paper points out the existing problems and the trend of study in the future.
Information Technology in the EMIS Integration with Virtual Private Green Cloud
Authors: Deng Jia Bin , Hu Chang , Hu Juan Li
Published: January 2014

Green Computing and Cloud Computing is one newly hot point in the area of research and application. Currently, the research and application associated with the Cloud Computing are mainly concentrated in Educational Information Management System (EMIS). In this paper, we proposed the model of the educational information system resources integration based on private cloud green. This finding is from the principles and characteristics of the cloud computing and the improved traditional virtualization technology. In this context of meeting the maximum reusability about the original system and reducing the costs of secondary development, we can make seamless integration and on-demand call among the heterogeneous, remote and different platforms and the tight coupling multi-EMISs in one "system". So that, we make the sharing of information among which is difficult to interact with each other in the "information island" and even integrate a variety of underlying independent hardware into a unified whole. Finally, this model can change according to demands and intelligently adjust the integrated hardware resources, achieving the better balance between effectiveness and resources, energy saving and basically meeting the needs of the data sharing.
Excess IL-1 Signaling Enhances the Development of Th17 Cells by Downregulating TGF-β–Induced Foxp3 Expression
Authors: Ikeda Satoshi , Saijo Shinobu , Murayama Masanori A. , Shimizu Kenji , Akitsu Aoi , Iwakura Yoichiro
Published: January 2014

IL-1R antagonist–deficient (Il1rn−/−) mice develop autoimmune arthritis in which IL-17A plays a crucial role. Although many studies have shown that Th17 cell differentiation is dependent on TGF-β and IL-6, we found that Th17 cells developed normally in Il1rn−/−Il6−/− mice in vivo. Then, we analyzed the mechanisms of Th17 cell differentiation in Il1rn−/−Il6−/− mice. We found that IL-21 production was increased in the lymph nodes of Il1rn−/− mice, naive Il6−/− CD4+ T cells differentiated into Th17 cells when cultured with TGF-β and IL-21, and the differentiation was greatly enhanced when IL-1 was added to the culture. Th17 cell differentiation was not induced by either TGF-β or IL-1 alone or in combination. IL-21 induced IL-1R expression in naive CD4+ T cells, and IL-1 inhibited TGF-β–induced Foxp3 expression, resulting in the promotion of Th17 cell differentiation. Furthermore, IL-1 augmented the expression of Th17 cell–specific transcription factors such as Nfkbiz and Batf. These results indicate that excess IL-1 signaling can overcome the requirement of IL-6 in the differentiation of Th17 cells by suppressing Foxp3 expression and inducing Th17 cell–specific transcription factors.
Pathogen-Related Differences in the Abundance of Presented Antigen Are Reflected in CD4+ T Cell Dynamic Behavior and Effector Function in the Lung
Authors: Torabi-Parizi Parizad , Vrisekoop Nienke , Kastenmuller Wolfgang , Gerner Michael Y. , Egen Jackson G. , Germain Ronald N.
Published: January 2014

Exposure to pathogens in the periphery elicits effector T cell differentiation in local lymph nodes followed by migration of activated T cells to and within the infected site. However, the relationships among pathogen abundance, Ag display on MHC molecules, effector T cell dynamics, and functional responses at the infected sites are incompletely characterized. In this study, we compared CD4+ T cell effector dynamics and responses during pulmonary mycobacterial infection versus acute influenza infection. Two-photon imaging together with in situ as well as ex vivo analysis of cytokine production revealed that the proportion of migration-arrested, cytokine-producing effector T cells was dramatically higher in the influenza-infected lungs due to substantial differences in Ag abundance in the two infectious states. Despite the marked inflammatory conditions associated with influenza infection, histocytometric analysis showed that cytokine production was focal, with a restriction to areas of significant Ag burden. Optimal effector function is thus constrained by the availability of TCR ligands, pointing to the value of increasing Ag stimulation rather than effector numbers in harnessing CD4+ T cells for therapeutic purposes in such conditions.
Induced Resistance to Ofatumumab-Mediated Cell Clearance Mechanisms, Including Complement-Dependent Cytotoxicity, in Chronic Lymphocytic Leukemia
Authors: Baig Nisar A. , Taylor Ronald P. , Lindorfer Margaret A. , Church Amy K. , LaPlant Betsy R. , Pettinger Adam M. , Shanafelt Tait D. , Nowakowski Grzegorz S. , Zent Clive S.
Published: January 2014

Ofatumumab (OFA), a human CD20-targeting mAb, kills B lymphocytes using the innate immune system including complement-dependent cytotoxicity (CDC). The efficacy of OFA in patients with chronic lymphocytic leukemia (CLL) is limited by drug resistance, which is not well characterized. To better understand mechanisms of resistance, we prospectively studied CLL cells isolated from blood samples collected before and after in vivo exposure to the initial dose of OFA therapy in 25 patients undergoing their first treatment for progressive CLL. As previously reported, OFA therapy rapidly decreased the absolute lymphocyte count, CD20 expression by CLL cells, and serum complement levels. We now show that after administration of the first dose of OFA, there was a modest rebound in the absolute lymphocyte count and serum complement levels, but substantial ongoing loss of CD20 expression by CLL cells. These post-OFA treatment CLL cells were highly resistant to OFA-mediated CDC but retained sensitivity to alemtuzumab-mediated CDC in vitro. Posttherapy serum OFA levels correlated inversely with both the amount of pretreatment circulating cell-bound CD20 and with the decrease in this value following treatment. In vitro OFA-mediated CDC did not predict clinical responses, and the patients with first-dose reactions to OFA did not have markers of increased complement activation in vivo. We propose that optimal efficacy of CD20- targeted therapy for CLL requires determining an mAb dose size and frequency that optimizes CLL killing without exceeding the capacity of the cytotoxic mechanisms and thus minimizes loss of CD20 expression in the surviving CLL cells.