bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of Drilling Fluid System of Resisting the High Temperature of 220 Degrees
Authors: Luo Hui Hong , Wang Ze Hua , Sun Yu Xue , Jiang Han
Published: August 2013

Focus on the high temperature rheological stability and the fluid loss control of resistance to high temperature drilling fluid system, further determine system formula and the formula of the high temperature drilling fluid system should be optimized. Eventually, a kind of organo-silica drilling fluid system of excellent performance which is resistant to high temperature of 220 degrees has been developed, and the system performances have been evaluated. The high temperature-resistant organo-silica drilling fluid system is of good shale inhibition, lubricity and borehole stability. The fluid loss is low and the filter cake is thin and tight, which can effectively prevent bit balling. The sand-carrying ability is good and the rheological property is easy to control. The performances of drilling fluid remain stable under high salinity and the system can resist the pollution of 6%NaCl and 0.5%CaC12. The materials used in this system are non-toxic, non-fluorescent and suitable for deep well drilling.
Parametric Design and Motion Simulation of Disc Cam Profile Curve Based on the UG NX
Authors: Wang Li
Published: August 2013

This paper presents a parametric design method of the cam profile curve with UG NX, created the cam curves with law of the curve command, conducted curve continuity analysis with Curve Continuity Analysis command, and the results show that all adjacent curves are tangent continuous. This ensures the design accuracy. The velocity curve and the displacement curve were got through the cam motion simulation, and the motion analysis is consistent with the results of theoretical design. Expressions were changed, and the motion analysis show that the parametric design of the cam contour is reasonable.
The Understanding of Thermomechanical Analysis of a Thermal Protection System
Authors: Peng Xiao Bo
Published: August 2013

Nowadays, reusable launch vehicle (RLV) has become a research focus of the transportation system between ground and space and the space weapon system. RLV plays an important role in controlling the cost of space transportation and performing the orbital mission. Since RLV would suffer from the aerodynamic heating inevitably during reentry, the thermal protection system (TPS) is designed to prevent too much heat transmitting to the vehicle structure and maintain the vehicle structure below a specified temperature limit. Several studies were performed to develop an understanding of not only the thermal and structural analysis of ceramic tile thermal protection system on the space shuttle but also the controlling factors of TPS. The TPS is subjected to the reentry heating and pressure profile of the Access to Space vehicle, and the transient temperature distribution and the resultant thermal stresses in the system are computed. Comparisons between various studies based on different assumptions were examined. By comparing these results with more realistic ones, the differences are evaluated. Results suggest that the TPS analysis must be based on reasonable and realistic parameters. Thus, engineers have to keep in mind that all parameters should be chosen very carefully to achieve results that close to practical ones.
Study on System Reliability of Large Tensile Structure Based on Failure of Main Cables
Authors: Tang Shi
Published: August 2013

In this paper, cable-membrane structure roof of a stadium was taken as a research case, a system reliability research method for large tensile structure was proposed. In the method, failure probabilities of main tensile cables were determined firstly, and main failure modes were obtained according to the relationship between the main tensile cables failure and the system failure, system reliability index would be gotten on the basis of main tensile cables failure probabilities and main failure modes accordingly. In analysis of the stadium, JC method was applied to analyze the reliability of main tensile cables, it was shown that, compared with other cables, the failure probability of lower ring cables and that of lower radial cables were higher, so the structure system failure mode caused by lower ring cables failure and that caused by lower radial cables failure were underlined, and enumeration method has been adopted to analyze the reliability of structure system. The system failure probability caused by the failure of lower ring cables was found relatively high, and the failure of lower ring cables would result in the failure of the structure system immediately, so special attention should be paid. Finally, design strategies have been put forward according to the results of reliability research, safety protection lines were added up by special design of tensile cable joints, and the reliability of the structure system has been improved.
Double Disc Mower Gear Parametric Modeling and Modal Analysis Based on Pro/E and ANSYS
Authors: Zhang Ning , Zhao Man Quan , Zhang Xiao Zhi , Shi Yan Hua
Published: August 2013

Following the involute forming principle, establish the accurate tooth surfaces involute equation, use the Pro/E to parametric modeling the straight bevel gear and virtually assemble. Only need simply modify the relevant parameters, on the basis of the relationship between each variable and parameters of module, number of teeth etc, automaticity regenerate straight bevel gear model. In this paper, using the finite element software ANSYS workbench modal analysis of the gear .The research shows that, the frequency of mode from 6375.2HZ to 19215HZ,which is can provide an effective method for the dynamic design of the gear.
Single Neuron PID Control of a Turbofan Engine with Inlet Pressure Distortion
Authors: Wang Bin , Wang Xi , Liu Yue
Published: August 2013

In this paper, a preliminary exploration and research about the adaptive control law has been carried on for the turbofan engine with inlet pressure distortion. First, a real-time dynamic component-based model which contains the inlet distortion effects was established. Then, we select a single neuron PID controller with adaptive parameters to complete the dynamic acceleration process. The results illustrate that the single neuron control algorithm with gain adaptive has strong robustness, self-learning and anti-jamming capability and the performance of a turbofan engine can be effectively improved by using the turbine expansion ratio adaptive control law.
Study on Elastohydrodynamic Lubrication of Double Involute Gear Drive
Authors: Fan Zhi Min , Zhang Zhao Qiang
Published: August 2013

Double involute gear drive was a new type of gear drive, which had high bending strength, small vibration and low noise. In this paper, the lubrication characteristics of the new type of gear had been studied, the model of elastohydrodynamic lubrication had been simplified and analyzed by geometric, and the mathematical model used for numerical analysis of elastohydrodynamic lubrication had been established.
The Research on the Influence Cause of Boron Steel Sheet Size Precision Based on Automobile Light Quantizing
Authors: Liu Zhan Jun
Published: August 2013

The influence cause of boron steel sheet on size precision is studied, which is contained with additional drawing stress, emergency ratio, board deep, plastic modulus, subdued point, sclerotic index, crushing force, curvature radius and so on .In order to lay the further foundations of optimizing design, it is analyzed that the latent relation of influence cause of boron steel sheet on size precision by orthogonal experiment. It is pointed orderly out that the influences with rebound result of certain automobile back wheel casing are that sheet crushing force occupies the first place, sheet thick comes second, and sclerotic index comes third, emergency ratio and curvature radius in order. It is reached that the lowest rebound condition formed of certain automobile back wheel casing drawing, the rebound way controlled is given to boron steel sheet on size precision.
Research on Key Techniques of Intelligent Optimization of Batch Production Job Shop Scheduling
Authors: Zuo Yan Hong , Zhang Ke Ren
Published: August 2013

Job-shop scheduling is the very important, but weak part in the integrated manufacturing system. In view of the Job-shop scheduling characteristics for batch production of enterprises, this article analysised batch production scheduling problem in detail; then put out a workshop Intelligent Scheduling Optimization technical framework which contained six-stories. And study the basic theory and key technology of this structure framework in-depth, then proposed object-oriented technology which based on improved tabu search algorithm and NSGA-II algorithm to achieve the intelligent optimization targets , and in the experiment proved it is practical and effective.
Study of the Ultrasonic Characteristics of Typical Partial Discharge on GIS
Authors: Yang Yuan , Bi Jian Gang , Wang Hong Jie , Meng Nan
Published: August 2013

This Paper studied the typical PD in GIS by ultrasonic method. A GIS PD simulating and testing system is established, including a PD simulating system, an ultrasonic detecting system and a conventional pulse current method measurement system. The thesis focuses on four typical kinds of PD signals in GIS, including metal particles, bad contacts on high and grounding potential conductor, the protrusion on the high potential conductor. The statistics characteristics are obtained which include N-Φ spectrogram (relationship between discharge frequency and discharge phase Spectrogram) and Umax-Φ spectrogram (relationship between discharge amplitude and discharge phase Spectrogram). Experimental results show that low-frequency ultrasonic sensors can detect this four PD signals， signal spectra analysis shows that ultrasonic signals of different statistical model are with different characteristics. The results provide test data for the pattern recognition of Partial Discharge in GIS.
Application of PARAFAC Method in Petroleum Organic Measurement and Analysis
Authors: Li Xue Gang , Lv Xiu Ling , Zhang Yi
Published: August 2013

The analysis algorithm of parallel factor, combined with fluorescence spectroscopy of three dimensions are used to study the organics identification in petroleum for impurities in surface water and concentration measurement, analysizing the effects on measurement of the coexist of multi-component petroleum pollutants. Treating gasoline, kerosene and diesel as samples, through a mixed solution of a variety of different proportions to imitate the state of coexistence of a variety of petroleum organic, studying PARAFAC in a variety of characteristics of the mixed solution component. Experiment focused on the Steam diesel hybrid solution, Wood kerosene mixed solution and Steam wood kerosene mixed solution, and it can separate their different fluorescence spectrums from the complex mixed composition of three dimensional fluorescence spectrum data matrix. It realized the simultaneous measurement for the main factor in composite samples. And it also calculates the average error rate of concentration .The result indicates that PARAFAC can realize petroleum pollutants composite sample identification and concentration measurement.
The Research on Non-Sinusoidal Vibration Control System of Continuous Casting
Authors: Xu Ze Ning , Zhou Bin , Sun Yu Ming
Published: August 2013

This paper studies the math functions about non-sinusoidal vibration waveform of the continuous caster, simulates the continuous caster non-sinusoidal vibration waveforms displacement and velocity curve ,and creates a model of the mold oscillation control system. Besides, we use MATLAB to judge the stability of the control system and system simulation and verify the feasibility of the control system through the field's test.
High-Temperature Superconducting Linear Phase Filter for WCDMA Communication System
Authors: He Li Juan , Ji Lai Yun , Du Jian Chang
Published: August 2013

This paper represents a high-temperature superconducting (HTS) linear phase filter with self-equalization for WCDMA communication system. of the filter have been presented. The principle, equivalent model, theoretical result, coupling matrix, and the simulated result have been presented. The desired filter with 12-pole and 2 cross couplings has a center frequency of 1950 MHz. The measurement results show that the response of practical filters is in good agreement with that of simulated results and theoretical analysis, the group delay variation is less than ±10 ns over 75% of the filter bandwidth.
Car Alarm System Test Bench Production and Research
Authors: Yang Lian Fu
Published: August 2013

With the rapid development of the car, the importance of car alarm system has been confirmed. In recent years, the car alarm system has been continuously improve and development,make the whole system which is complex and difficult to see clearly to clear and intuitive anti-theft system test bench,and then do research and experiment teaching, this is a good way to study. This article makes the car alarm system into a test bench, using network interconnection, microcomputer control, serial port communication and TCP/IP, intuitive shows its composition and working principle, provides the basis for teaching and research. In the study, crack the anti-theft system control problems, achieve the remote control, provide a great convenience for teaching research and teaching, etc.
Analysis on Circulating Water Heat Utilization Technology in Thermal Power Plants
Authors: Liu Jian Tao , Ma Xiao Cheng , You Kun Kun , Ren Jian Xing , Yang Yong Wen
Published: August 2013

The thermal power unit is the major unit in Chinas power supply. Circulating water has large low-temperature waste-heat which can be recycled. The principles of water source heat pump technology is analyzed, characteristic of circulating water system in thermal power unit is studied. Then two kinds of connection methods between circulating water system and water source heat pump (WSHP) are presented.
Developing Overview of Progressing Cavity Pump System
Authors: Guo Zhong Feng , Li Shan Shan , Guo Hui
Published: August 2013

Electrical Submersible-motor-driven Progressive Cavity Pumping (ESPCP) oil extraction technology has the advantages of sample technology and management convenience. ESPCP is suitable for the viscous, containing sand, high gas oil ratio oil extraction. Developing history of ESPCP is introduced and the structure and principle are analyzed. The advantages of ESPCP are compared with other oil extraction technology. At last, developing status is discussed and the developing trend is investigated.
Study on Impact Stress Characteristics in Ultrasonic Cutting and Brittle Material Removal Mechanism
Authors: Pi Jun , Yang Guang , Ye Fei
Published: August 2013

The impact of cutter against the materials can be regarded as the rigid ball with certain energy oblique impact against the semi infinite space in the ultrasonic vibration cutting process. The cutter and materials three-dimensional surface stress state was theoretically deduced from building the dynamic shock model in Hertz contact state. Ultrasonic vibration cutting in the tiny cutting depth can be regarded as the contact extrusion process of blunt pressure head oblique impact on materials, the material indentation and crack development trend was given based on the surface stress analysis and test results of rigid ball oblique impact on the glass. The indentation and crack development of spherical pressure head oblique impact on the brittle materials was analyzed, material failure in the back edge with deeper crack is controlled by tensile stress, the tensile stress values depend on the friction coefficient and the normal pressure, material failure crack caused by shear stress on both sides exist on the material surface. Ultrasonic vibration can reduce normal pressure and crack to come into being. Cutting fluid lubricating can reduce the friction coefficient to control with only shallow crack produced in the cutting process.
The Design of Electronic Flat Guitar Based on LabVIEW
Authors: Zhang Xing Yun , Zhang Tao , Ding Ji Feng
Published: August 2013

Due to the guitar operates inconveniently, and most of the electronic products take the approach of recording and playback but not helped much, in order to make the guitar more widespread, this text proposes a solution which in the way of matrix keyboard to play the guitar, and explains the design of electronic flat guitar based on LabVIEW [ to realize the function of electronic flat guitar by seting frequencies of the sound , as well as commonly used controls in LabVIEW.
Research and Application on STIW Classification Method
Authors: Zhang Dong Li , Yuan Li Na , Wei Xu Guang
Published: August 2013

In this paper, we put forward concepts characteristics of cluster, and build a cluster classification framework, then apply it to analyse county region cluster.
A Summarization of Tribological Behaviors of Self-Lubricating Composite Ceramic Tool
Authors: Li Fu Meng , Feng Yi Hua , Sun Hao , Huang Hai Xia
Published: August 2013

Under the special circumstances, we cannot use the lubricating medium and want to overcome the lake of friction properties of the single material in the cutting process, we will be done mainly through two ways: prepared self-lubricating tool and preparation of coating tools, in order to work reliable under the extreme conditions.
Structure for Information System Error Correction
Authors: Zhang Xiao Wei , Xie Qiao Ling
Published: August 2013

In recent years large corporations as well as smaller commercial enterprises have begun to devote increased attention to system error correction and system quality. This paper introduces a novel toolthe Structure for Information System Error Correction (SISEC), implemented by the author and applicable for auto-generation of data. The paper discusses system requirements, design, architecture and modes of operation. It also contains a detailed comparison of the SISEC structure with existing confirming environments, focusing in particular on the SACK/SACX structure. The final section is devoted to experimental research into the availability of the presented tools in various projects and configurations, as reflected by quality examination.
The Major Problems of Modern Information Technologies Applied in College PE Teaching and Countermeasures
Authors: Feng Jia Fu
Published: August 2013

College PE teaching is a weak link in Chinas higher education. The modern information technologies applied in college PE teaching also appears insufficient. PE, as a rather special subject, the special nature of its teaching is also strong. Thus, the special nature of modern information technologies applied in college PE teaching shall also be highlighted. The applications of information technologies in college PE teaching produce positive impacts. However, we also find out that currently, the applications of information technologies in college PE teaching have also caused many misunderstandings and confusions. Many problems have not yet attracted attentions, which has prevented or delayed to different degrees the information technologies from being applied more deeply and extensively in college PE teaching. This essay summarizes and studies on the key points and major problems in information technologies applied in college PE teaching.
The Economic Analysis of Large Cross-Section Conductor in UHVDC Project
Authors: Zhou Hai Ying , Bu Chun Lei , Jiang Ming
Published: August 2013

Conductor scheme is one of key issues in the design of the UHVDC transmission project, and it is significant for the construction cost and safe operation of transmission line. It can be concluded from analysis on application of existing conductor that the appropriate decrease in number of bundle conductor and increase of the conductor cross-section will reduce line loss, which has remarkable social-economic benefits. In this paper, the economic analysis of large cross-section conductor is conducted based on UHVDC Project. Some useful suggestions are given.
Application of Multiple Nonlinear Regression Based on SPSS in the Risk Assessment of Debris Flow
Authors: Lang Qiu Ling , Li Guang Jie , Huang Jing Li
Published: August 2013

This article establishes analysis model based on Multiple Nonlinear Regression and analyses the model using SPSS. Then eight indexes such as storage of Material sources are selected as independent variable, and make an empirical analysis by survey data of 40 debris flow valleys. Finally, the test results show that both the importance analysis of the impact factors of debris flow and the rank deviation of risk assessment are right. Moreover, using multiple nonlinear Regression model and SPSS to assess the risk of debris flow is proved feasible.
Effect of Cu (II) Ion on Abrasive-Free Polishing of Hard Disk Substrate with Peroxyacetic Acid System Slurry
Authors: Wang Zhi Jun , Lei Hong
Published: August 2013

Recently, abrasive-free polishing (AFP) has attracted a great deal of attention due to its gentler polishing process and lower particle residue than traditional chemical mechanical polishing (CMP). Our present work investigates the effectiveness of Cu (II) ion on AFP of hard disk substrate in peroxyacetic acid (PAA) system slurry. The polishing experimental results show that the PAA/Cu (II) system slurry has higher material removal rate (MRR) and lower roughness (Ra) than PAA system. Further, the reaction mechanism of Cu (II) ion in PAA/Cu (II) system AFP of hard disk substrate was investigated preliminarily by electrochemical analysis.
The Design and Application of Flux-Cored Strip for Surfacing
Authors: Sun Jun Sheng , Jiao En Li , Wang Hao Meng
Published: August 2013

In this paper, a type of high-deposition-rate, low-dilution-rate and wide-welding-bead flux-cored strip which is easy to realize automatic surfacing was designed. Considering the working condition of high temperature and abrasive wear in the iron and steel industry, a kind of high-chromium iron surfacing flux-cored strip was designed. The effect of alloy elements on the microstructure and property abrasive wear resistance of deposited metal was investigated. The abrasion and heat resistant plate deposited by the flux-cored strip was carried out on raw material transport system in steel enterprises. The service life was significantly improved and the examination and repair time is reduced.
The Influence of the Type and Pressure of Shielding Gas on the Porosity Formation for CO2 Laser Welding of TA15
Authors: Duan Ai Qin , Gong Shui Li
Published: August 2013

Many studies have shown that during laser welding, shielding gases play a key role in many aspects. In this paper, a series of contrast experiments about CO2laser welding of TA15 TI-alloy were completed by using He and Ar as shielding for different pressure, respectively. The experiments results reveal that the porosities in the weld have strong relation with weld penetration, and the shielding gas have great influences on the weld penetration. So the porosities mainly form in the center of welds which are under critical penetration and lack of penetration, and have no direct relation with the type and pressure of shielding gas.From the contrast images of penetrating process, it is known that when He as shielding gas, the sizes of keyholes on the back welds are quite larger than the sizes when Ar. This means more vapor erupting from bottom keyhole and porosities not easy to form. At the same pressure, the opening times of keyholes when He as shielding gas are longer than the times when Ar. Long opening times of keyholes make the shielding gas within keyhole not easy to be involved into the molten pool and form the porosities.
Microwave Joining Alumina Ceramics Using Al-Si Alloy Powders at Low Temperature
Authors: Zhao Ying Na , Zeng Xiong Feng , Gao Shui Jing , Zhang Wen Li
Published: August 2013

Alumina composites were joined in air by microwave heating, along with Al-Si alloy powder as the interlayer. The interfacial microstructure and the fracture surface were investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Element and phase components of the interlayer were analyzed by X-ray diffraction (XRD). Experimental results clearly indicated that microwave heating method effectively hampered the oxidation of the interlayer and indirectly promoted adhesion. The molten Al-Si alloy wetted and penetrated to the 95-Al2O3 ceramics surface, which formed the well joining interface.
Rock Slope Stability Study of Numerical Analysis
Authors: Jin Jing , Jiang Jing
Published: August 2013

Combining the current research method of rock mass parameters, to the RuMei hydropower station in Tibet as the background, using the finite element calculation software, and using the two section for numerical analysis, considering all kinds of conditions under the condition of the simulated stress strain and displacement, the distribution of plastic failure, comprehensive analysis and evaluation of its stability.
Material Design and Property of High Viscosity Asphalt Used in Pervious Asphalt Pavement
Authors: Chen Shuan Fa , Zhu Si Yue , Qin Xian Tao , Li Zu Zhong
Published: August 2013

Dynamic viscosity, toughness and tenacity were used as the key indicators combined with conventional asphalt indicators such as ductility, penetration, softening point to evaluate the modification effect. The change laws of the indicators influenced by the dosages of polymer, compatilizer and stabilizer as well as the modification mechanism were analyzed; and the dosages of the three modifiers were determined. The results indicate that the modification effect is strongly influenced by the content of modifiers. Each of the modifiers plays a unique role in the performance the high viscosity asphalt. Through a particular modification technology, the optimum dosages of polymer, compatilizer and stabilizer used in self-modified high viscosity asphalt were determined at 7%, 3% and 2% respectively.
Research on Thermal Behavior Sustainable Design of Chinese Traditional Dwellings in Southern Hunan Province
Authors: Xu Jian He , He Jian Mei
Published: August 2013

The paper focuses on studying thermal behavior of the historical dwellings in southern Hunan. The field assessment was conducted based on the analysis of the space temperature, comparing the physical environment in different locations, as well as researching the sunshade of lanes and eaves. The results show that the thermal behaviors of the historical dwellings are meet ecological standards. The technology can be regarded as an excellent construction experience and it has a direct influence on local building environment. By assessing our traditional village with modern technology, we can know of the builders wisdom on how to work with nature and save resources.
Study on Strength Mechanism of Self-Compacting Rock-Fill Concrete with Big Aggregates
Authors: Wang Hai Chao , Cheng Chun Ru , An Xue Hui
Published: August 2013

Self-compacting rock-fill concrete with natural and recycled aggregate can be applied in large structural components’production. According to the deep analysis of material's mechanical properties test data, the author makes a study on the strength mechanism of the concrete material. The results show that the concrete material essentially is concrete, and the concrete strength of large-sized natural aggregate and recycled aggregate are basically the same. However, due to the varieties in material production process and material shape as well as the influence of the mechanical properties and aggregate size, the strength mechanism of them is different. Effective control on mechanical properties of self-compacting rock-fill concrete and aggregate's appearances and shapes is helpful to the strength design of the self-compacting rock-fill concrete with large aggregate.
Experimental Investigation on Mix Designed HSC HSFRC Specimens Perfomed with Volcanic Aggregate
Authors: Anania Laura , Badalà Antonio , D'Agata Giuseppe
Published: August 2013

The selection of mix proportion is the process of choosing suitable ingredients of concrete and determine their quantities with the object of producing as economically as possible concrete of notably strength. The current paper deals with the mix design of both an HSC and HSFRC constituted by volcanic aggregates from the quarries of Eastern Sicily in Italy. The mix design was carried out on eight different concrete mixtures by using the theoretical model developed by Feret – De Larrard’s and it is capable of simulating the experimental compressive strength. The HSFRC mixtures consider different volume fractions of fibers equal to 0% (HRC), 0.5% and 2% (HSFRC). Straight Polyvinylalcohol (PVA) and hooked-end steel fibers (ACC) were the two types of fibers employed in the study. Compression and tensile tests were carried out on specimens performed according to UNI codes in order to validate the mixture proportion method adopted. The HSFRC (0.5%) mixtures did not show great differences in mechanical performance by any variation of the fiber type (steel or PVA). The mechanical properties obtained by experimental tests give back a very good accordance with the theoretical prediction of the mix design procedure adopted, and with the data reported in the literature in terms of toughness.
Study on Preparation of Ceramsite by Kyanite Tailings
Authors: Yue Zhi Xin , Chen Juan Nong
Published: August 2013

In view of the traditional ceramsite using a large number of high-quality natural clay and shale, the destruction of the environment problem, ceramsite was prepared by kyanite tailings in Hebei, The results show that when the kyanite tailings and clay was in the ratio of 7: 3, the preheating temperature was 500°C, preheating time was 15min, calcination temperature was 1100°C, heat preservation time was 15min, the apparent density of ceramsite is 816kg/m3, the particle strength of 851N.
Research on Support Technology in Deep Roadway of Huafeng Mine
Authors: Kong Jie , Chen Peng , Chen Jun , Liu Qing Shu , Ma Zhen
Published: August 2013

Huafeng mine 1141 roadway (the 5th) that the buried depth is nearly 1000m, the angel of roadway is larger, the physical and mechanical characteristics of surrounding rock are poor, belongs to typical large inclined angle soft rock deep roadway. Using the reasonable supporting way is very important to control the deformation of the surrounding rock in roadways. The strata control observation shows that the roadway deformation is in a predictable range, could effectively ensure the stability and service life of 1141 roadway (the 5th) by using combined support of anchor, bolting with band and net, composite U shape shed. It can provide reference function to the supporting way of similar deep roadway.
Fluorine Vaporization and Leaching from Mg Slag Treated at Different Conditions
Authors: Wu La Ner , Han Feng Lan , Yang Qi Xing , Du Chun , Xu An Jun , Li Jian Li
Published: August 2013

Both treatments and leaching tests of an Mg slag sample containing F of 2.15% from an Mg factory in northwest China were conducted in the present study, focusing on problems of F pollutions. By treating at 1000-1200°C in a muffle furnace, F leaching was decreased to a minimum level of 0.49-2.85 mg/l from the Mg slag with an original F leaching of 13.9 mg/l. The F leaching values increased to 4.83-95.5 mg/l, while treating the slag samples in a vacuum furnace. The treatments of Mg slag may thus be carried out in oxidizing atmosphere and under 1200°C to minimize fluorine pollutions and to improve environmental performances of the Pidgeon process.
Development and Simulation of WEDM Five-Axis Linkage Machining
Authors: Wang Xin Rong , Cui Ya Chao , Jiang Yong Cheng
Published: August 2013

In order to solve the problem of machining work-pieces with complex space curved surface, a machining system was developed, and the rotary table with two sways is the most important part. The motion rules of machining work-pieces with complex space curved surface were analyzed, and the computer simulation of WEDM five-axis linkage system was put forward. Through running the simulation programs, the whole machining process of WEDM five-axis linkage system can be directly observed, and the satisfactory simulation results can be obtained. The NC machining system with five-axis linkage by WEDM was developed, and the complex curved surface work-pieces can be machined by combining the rotary table with two sways with the WEDM-HS machine tool. The key technology problem of machining work-pieces with complex space curved surface has been fundamentally solved, and the application range of WEDM-HS machine tool is widened, which suit the specific conditions in China.
Forming Process Numerical Simulation of Beverage Can
Authors: Zhang Guo Qiang , Zhai Ji Qiang , Hao Ting , Wang Wen Juan , Yang Xu Biao , Liu Ya Jun
Published: August 2013

Numerical simulation in the 200ml beverage can forming process was carried out by means of computer aided engineering. Beverage can drawing production process parameters and a forecast for the production process of all sorts of possible defects were obtained. Based on the results of the simulation, we can improve die structure and process method. Thus the development costs of die will be reduced. The manufacturing time of die will be shortened. The purpose of reducing the cost of production can be achieved ultimately.
‘They worship in our churches’ – An opportunity for the church to intervene in order to diminish the corruption that is hindering service delivery in South Africa?
Authors: Khotseng Benito , Tucker A. Roger
Published: August 2013

This practical-theological study aims to develop a contextual theology in the areas of business and government that will aid a successful intervention by the church in diminishing the corrupt practices prevalent in South Africa. It seeks to prove that corruption is a major factor in causing the delays experienced in the implementation of service delivery, and that this is causing much anger and increasing disillusionment with the present system of democratic government. At the moment the church has a window of opportunity for this intervention to take place, since many of those responsible for supporting, organising and implementing service delivery, both in government and industry, worship regularly, as committed members, in local Christian congregations. A modified application of the Asset-Based Community Development (ABCD) approach using focus groups is suggested as both a tool for intervention and for further research.
Deon Opperman en Janine Neethling se Die Skepping — ’n Skouspel
Authors: Stimie Annemie
Published: August 2013

Deon Opperman (director and librettist) and Janine Neethling (composer) staged an Afrikaans oratorio called Die Skepping (“The Creation”) in the State Theatre, Pretoria in February 2013. They aimed to produce a work that has “classical integrity” and that remains musically accessible to listeners. The musical language and the commerciality of the production, however, raise questions about the work’s “classic” status.
Satellite observations indicate substantial spatiotemporal variability in biomass burning NOx emission factors for South America
Authors: Castellanos P. , Boersma K. F. , van der Werf G. R.
Published: August 2013

Abstract. Biomass burning is an important contributor to global total emissions of NOx (NO + NO2). Generally bottom-up fire emissions models calculate NOx emissions by multiplying fuel consumption estimates with static biome specific emission factors, defined in units of grams of NO per kilogram of dry matter consumed. Emission factors are a significant source of uncertainty in bottom-up fire emissions modeling because relatively few observations are available to characterize the large spatial and temporal variability of burning conditions. In this paper we use NO2 tropospheric column observations from the Ozone Monitoring Instrument (OMI) from the year 2005 over South America to calculate monthly NOx emission factors for four fire types: deforestation, savanna/grassland, woodland, and agricultural waste burning. In general, the spatial trends in NOx emission factors calculated in this work are consistent with emission factors derived from in situ measurements from the region, but are more variable than published biome specific global average emission factors widely used in bottom up fire emissions inventories such as the Global Fire Emissions Database (GFED) v3. Satellite based NOx emission factors also indicate substantial temporal variability in burning conditions. Overall, we found that deforestation fires have the lowest NOx emission factors, on average 30 % lower than the emission factors used in GFED v3. Agricultural fire NOx emission factors were the highest, on average a factor of 2 higher than GFED v3 values. For savanna, woodland, and deforestation fires early dry season NOx emission factors were a factor of ~1.5–2.0 higher than late dry season emission factors. A minimum in the NOx emission factor seasonal cycle for deforestation fires occurred in August, the time period of severe drought in South America in 2005. Our results support the hypothesis that prolonged dry spells may lead to an increase in the contribution of smoldering combustion from large diameter fuels to total fire emissions, which would lower the overall modified combustion efficiency (MCE) and NOx emission factor, and offset the higher combustion efficiency of dryer fine fuels. We evaluated the OMI derived NOx emission factors with SCIAMACHY NO2 tropospheric column observations and found improved model performance in regions dominated by fire emissions.
Evolution and strengthening of the Calabrian Regional Seismic Network
Authors: D'Alessandro A. , Gervasi A. , Guerra I.
Published: August 2013

Abstract. The Calabrian Arc is an area of high seismic hazard, in the past often affected by destructive earthquakes. The seismicity of the Calabrian region is monitored by the Italian National Seismic Network integrated by the Calabrian Regional one and, in the last three years, by the Pollino temporary array. We have applied the Seismic Network Evaluation through Simulation to assess the individual contribution of each network in locating earthquakes with epicentres in the Calabrian region and surrounding. We shows that the Calabrian Regional Seismic Network greatly improves the quality of the coverage in almost the Calabria territory except in the Crotone Basin, in the Serre and in the offshore areas. We show that the contribution of the Pollino temporary array is instead restricted to a very small area centred on the Pollino Chain. Due to the presence in the Serre of important seismogenic volumes, which in the past have generated destructive earthquakes, it would be opportune to add at least several seismic stations in this area and surrounding to improve the seismic monitoring.
Abnormal Expression of CD20 on IgG4 Plasma Cells Associated With IgG4-Related Lymphadenopathy
Authors: Grimm Kate E. , Bakke Antony , O'Malley Dennis P.
Published: August 2013

Context.—Immunoglobulin G4 (IgG4)–related disease is a recently described entity that presents as mass-forming lesions in soft tissue, exocrine glands, and in lymph nodes as IgG4-related lymphadenopathy. The underlying pathologic mechanism of IgG4-related disease is unclear; however, rituximab (an anti-CD20 monoclonal antibody) has been shown to have clinical efficacy.

Objective.—To look for the presence or absence of CD20 on the IgG4-expressing plasma cells in IgG4-related lymphadenopathy.

Design.—Twelve flow cytometry cases were identified through a retrospective review from the authors' institutions files. Cases were selected by the presence of a lymph node biopsy specimen with increased IgG4 plasma cells by immunohistochemistry and a histologic diagnosis compatible with IgG4-related lymphadenopathy.

Results.—We report dim CD20 expression on plasma cells in all cases for which a plasma cell population was clearly identified by flow cytometry. These cases were from patients with lymph node biopsy specimens that met published criteria for IgG4-related lymphadenopathy.

Conclusions.—This finding may be one potential explanation for the clinical efficacy of rituximab in IgG4-related disease.
Crystal-Storing Histiocytosis Complicating Primary Pulmonary Marginal Zone Lymphoma of Mucosa-Associated Lymphoid Tissue
Authors: Zhang Chen , Myers Jeffrey L.
Published: August 2013

Crystal-storing histiocytosis is an uncommon form of nonneoplastic histiocytic proliferation that in most patients complicates an underlying lymphoproliferative or plasma cell disorder. Lung is a common site of involvement in patients with localized disease. We present an illustrative example from a 54-year-old woman with an asymptomatic solitary lung nodule. The tumor was characterized by sheets of histiocytes with abundant cytoplasm expanded by distinctive eosinophilic inclusions. Focal necrosis was present. Aggregates of monocytoid lymphocytes and clusters of peribronchiolar plasma cells were overshadowed by the histiocytic infiltrate. Immunohistochemical stains showed CD68 staining in nonneoplastic histiocytes and CD20 staining in monocytoid lymphocytes. In situ hybridization studies showed κ light-chain restriction in plasma cells. These results, combined with the histologic findings, supported the diagnosis of crystal-storing histiocytosis complicating marginal zone lymphoma of mucosa-associated lymphoid tissue. We review the literature pertaining to pulmonary crystal-storing histiocytosis, highlighting the differential diagnosis for this rare phenomenon.
Nova utilização para sub-produtos da cana, através do desenvolvimento de compósitos de matriz polimérica e celulignina, poderá substituir produtos de madeira
Authors: Aquino Regina Coeli M. Paes , d'Almeida José Roberto Moraes , Monteiro Sérgio Neves
Published: August 2013

A celulignina é um composto natural derivado da transformação físico-química da celulose e que combustível alternativo. Por possuir uma microestrutura fibrosa, a celulignina poderia ser utilizada como elemento de reforço em compósitos. Assim, no presente trabalho foi realizada uma investigação relativa ao emprego da celulignina como fase reforçadora em compósitos poliméricos possuem um potencial de competitividade com produtos industriais à base de madeira.
Densificação de compósitos de cobre-grafite
Authors: Santos Clébio de Azevedo , Holanda José Nilson França de
Published: August 2013

Neste trabalho são apresentados os resultados obtidos no estudo de densificação de compósitos de cobre-grafite, tendo em vista a aplicação destes materiais em contatos elétricos. Foram utilizados duas composições: Cu -5 peso C e Cu -20 peso C. Os pós prensagem uniaxial em matriz de aço temperado (AE=8mm) em 200 MPa. As condições de sinterização utilizadas foram: 950° C/10min, 950° C/20min, 950° C/40min e 950° C/60min. Foram analisados os seguintes parâmetros: a variação de massa, a contração linear, a densidade aparente e a morfologia das amostras sinterizadas em função das condições de sinterização.
Fabricação de álcool através de uma torre de destilação de uso didático
Authors: Naegele Eugênio , Crespo Leandro Souza , Denti Filho José
Published: August 2013

Este artigo apresenta o processo da produção de álcool de cana-de-açúcar normalmente utilizado em destilarias, a sua obtenção através de uma torre de destilação de uso didático, a instrumentação utilizada para medição e controle do processo, os resultados obtidos em aplicações de forma empírica e os passos necessários para a modelagem dinâmica da torre, de forma que estudos posteriores possam dar subsídios para o desenvolvimento de técnicas de controle moderno, usando a torre como laboratório de aplicação.
Unilateralidade & conexão - docência e disciplina na formação do professor (o caso de História)
Authors: Andrade Everardo Paiva de
Published: August 2013

Discute a lógica da disciplinarização do ponto de vista do “pensamento complexo”, de Edgard Morin. Aponta para o caráter disciplinar das propostas de diretrizes curriculares para a graduação de História, expresso no documento da COESP / SESu. Conclui com indicativos para a reflexão sobre a questão da Educação em História.
Estorvo: uma alegoria sobre o homem moderno
Authors: Pereira Gil Carlos
Published: August 2013

Este artigo apresenta uma abordagem semiótica do romance de Chico Buarque, trabalhando com semioses que nos remete ao mundo moderno, como uma alegoria de sua visão desestruturada e desestruturadora do homem.
Da informação ao conhecimento: Um caminho para a inovação
Authors: Barcelos Gilmara Teixeira , Batista Silvia Cristina Freitas , Rapkiewicz Clevi
Published: August 2013

Vivemos atualmente numa sociedade informacional caracterizada particularmente pela constante necessidade de transformar a informação em conhecimento. Nesse contexto, onde informação, conhecimento e inovação são fundamentais, a educação é elemento chave.
Direitos humanos e justiça: Uma experiência em equipe interdiciplinar
Authors: Carvalho Theresa Atem de , Silva Alessandra Florido da
Published: August 2013

O objetivo deste texto é o estudo do Direito Constitucional à ampla defesa que supõe um trabalho interprofissional nos Núcleos de Prática Jurídica. A ampla defesa exige informações, conciliação extrajudicial, reforço à auto-estima, pareceres periciais e outras atividades que são parte da construção concreta dos direitos fundamentais e humanos dos cidadãos. Essa é uma nova proposta que se desenvolve internacionalmente no Direito e que prevê uma ampliação de atividades extrajudiciais.
Patriotism and Propaganda in First World War Britain
Authors: Monger David
Published: August 2013

The story of propaganda and patriotism in First World War Britain too often focuses on the clichés of Kitchener, ‘over by Christmas’ and the deaths of patriotic young volunteers at the Somme and elsewhere. A common assumption is that familiar forms of patriotism did not survive the war. However, the activities of the National War Aims Committee in 1917-18 suggest that propaganda and patriotism remained vigorous in Britain in the last years of the war. The NWAC, a semi-official Parliamentary organisation responsible for propaganda to counteract civilian war-weariness, produced masses of propaganda material aimed at re-stimulating civilian patriotism and yet remains largely unknown and rarely discussed. This book provides the first detailed study of the NWAC’s activities, propaganda and reception. It demonstrates the significant role played by the NWAC in British society after July 1917, illuminating the local network of agents and committees which conducted its operations and the party political motivations behind these. At the core of the book is a comprehensive analysis of the Committee’s propaganda. NWAC propaganda contained an underlying patriotic narrative which re-presented many familiar pre-war patriotic themes in ways that sought to encompass the experiences of civilians worn down by years of total war. By interpreting propaganda through the purposes it served, rather than the quantity of discussion of particular aspects, the book rejects common and reductive interpretations which depict propaganda as being mainly about the vilification of enemies. Through this analysis, the book makes a wider plea for deeper attention to the purposes behind patriotic language.