bluuebunny/crossref_metadata_2025 huggingface dataset:
Risk Analysis of a Large-Scale Construction Project
Authors: Dai Wen Jie
Published: July 2014

Huge investment, long construction period, many risk factors are existed in large-scale construction project. They are faced with various risks intervened with each other. this study using analytic hierarchy process and fuzzy evaluation method, conducts the comprehensive analysis of project risk level, and by combining list sorting method with subjective evaluation method grade the risk factors according to their likelihood of occurrence, the degree of serious consequences, and the controllability of occurrence, so that by the multiplication of three scores, the level of risks can be obtained and corresponding strategies can be established according to these different risks.
Affect of Brominated Flame Retardant on the Flexible Polyurethane Foam
Authors: Chen Ying Jie , Peng Liu Zhi , Dai Pei Gang , Li Dan Lin , Wu Li Jie
Published: July 2014

Different flexible polyurethane foams (FPUF) were prepared with one step method. Combustion performance of them were tested throughout oxygen index (OI), cone calorimeter (Cone). The results showed that flame performance prepared by 10% wt brominated flame retardants, and 10% wt MPOP was better. In irradiance 30kW/m2, sample thickness 50mm conditions, heat release rate peak seprarately decreased to 284.0 kW /m2 and 270.8 kW /m2. In the coordination of N and P, the FPUF adding MPOP showed ideal flame retardancy .It is worth noting that when the content of MPOP exceeds 10%, the physical performance decreased rapidly with the increases of brittleness and hardness.
Governance Mechanism of Rural Population Hollowing under the Background of Balancing Urban and Rural Development
Authors: Song Fan Jin , Wang Dong Qiang , Tian Shu Qin
Published: July 2014

Under the process of balancing urban and rural development, many villages appeared the phenomenon of rural population hollowing. The number of rural population reduction and demographic imbalance greatly influenced the process of building new socialist village. From the perspective of development anthropology, to solve the problem of rural population hollowing fundamentally, we must reflect the existing ways to governance rural population hollowing and propose the political, economic, social and cultural governance mechanism to governance rural population hollowing under the process of balancing urban and rural development from the perspective of system correction mechanisms and multi-center levels of governance according to the paradigm of urban-rural dual system analysis.
The Application of Factor Analysis in the Study on Cultural Industry Competitiveness Evaluation Index System
Authors: Sun Ping
Published: July 2014

Based on the premise of an existing condition data, using factor analysis methods to build a cultural industry competitiveness evaluation index system and evaluation model, the corresponding indicators in the model will be evaluated at the final evaluation results. Statistical analysis using SPSS software, score differences in various parts of, analyses the major gaps.
Research on Rapid Bidding of Forgings
Authors: Gu Feng
Published: July 2014

Forging, as a traditional machining, plays an important role in Chinese economics construction and equipment production. It is essential to enhance the level of management for forging enterprises. This study aims to reveal the cost composition of forgings and the law of bidding, and thereby make an integrated and intelligent bidding for forgings with reduction of bidding the difficulty and improvements of accuracy. Activity-based costing bidding for forging is studied in depth after analysis of forgings cost composition and enterprise business process. The research promotes the integration and intelligence of forging bidding as well as the accuracy and reasonableness.
Study on Evaluation Index System and Methods of Vendor Selection
Authors: Rao Cong Jun , Dong Jin Hui
Published: July 2014

The quality of the vendor effects on the market competitiveness of enterprises and the whole supply chain, and the vendor selection decision is the key to supply chain management. Focusing on the problem of selecting vendors, this paper introduces the research history and the newest research trends of the design of index system of vendor evaluation and the methods of vendor selection, and presents many widespread theoretical and applications problems. Moreover, assumptions, main ideas, and conclusions of literature related to vendor selection are reviewed and commented.
Prediction of Cigarette Sales Amount and Average Price Based on Lunar Calendar
Authors: Yang Xiao
Published: July 2014

Prediction of cigarette sales amount and average price is important for anomaly detection of orders, customers and cigarette brands. Besides this, prediction can be support of storing and production arrangement. By analyzing large amount historical sales records, a cigarette sales amount and average price foresting model is built to predict the weekly sales based on ARIMA model which using lunar time as the calendar. Result on the five years sales data from a Chinese city indicate that sales prediction based on ARIMA using lunar time can be an effective way to improve forecasting accuracy.
Research on the Multidimensional Teaching Goal Setting and Implementation of Exhibition Lighting and Illumination Design
Authors: Gong Qian
Published: July 2014

Hubei Institute of Fine Arts has been analyzing, sorting and studying the exhibition lighting and illumination design curriculum since the establishment of exhibition design major. Such curriculum includes various multidimensional objectives, such as exploring the design content of lighting effect of spatial form and exhibition props, investigation and estimation of natural and artificial light source as well as conception creation of scenario lighting effect, establishing model with strong lighting and lighting performance, etc. Based on the sorting and analysis of the curriculum system of “Exhibition Lighting and Illumination design” and exampled at excellent students’ works, the multidimensional teaching goal and implementation of exhibition lighting and illumination design were interpreted systematically. This could provide basis for other associated colleges in launching exhibition lighting and illumination design curriculum.
An Analysis of Characteristics and Purchase Predisposition of Consumer of Urban Community Commercial Service
Authors: Geng Qing Feng
Published: July 2014

This article is primarily for the research and analysis of demand for commercial service of urban community. First of all, it suggests the urgency and importance by redefining community’s connotation and function from the views of the development of society. Then through questionnaires we visited community residents in 18 districts of Tianjin, and finally sum up the essential characteristics and purchase predisposition of consumer of community commercial service.
Influential Factors of College Students’ Mobile Phone Recycling Behaviors
Authors: Wang You Ying , Ma Bu Qing
Published: July 2014

As China’s rapid development in economy and technology, people’s consumption concept transforms fast. Thus, the mobile phone replacement cycle becomes shorter and shorter. Recycling wasted mobile phone is beneficial to reuse of resource and decline in environmental pollution. Researches show that, college students, whose consumption concept is between adult and teenager, have both rational and irrational behavior trend and have largest probability of changing mobile phones. This article analyzes characteristics of college students’ recycling behavior and its influencing factors. Then, relevant suggestions are provided to enhance recycling efficiency.
Research on the Organization Operation Mode of the Hong Kong-Zhuhai-Macao Bridge Based on VSM
Authors: Sheng Gang , Yu Jia Qing
Published: July 2014

Based on describing the status of the organization structure of the related projects at home and abroad, the construction scheme and the project management features of the Hong Kong-Zhuhai-Macao Bridge (HZMB) are discussed, and the main operation and maintenance business after the opening of the HZMB is analyzed. Learning from the advanced organization design model-the Viable System Model (VSM), the organization operation mode of the HZMB is built, and at last a suggested solution to the organizational structure of the HZMB is proposed.
Application of Virtual Technology in Medical College
Authors: Shen Li Rong
Published: July 2014

Electrical and electronics laborary is the important institutions of basic practical teaching in medical colleges for the students majoring in electronics, which is the bridge to professional knowledge. Due to that the mode of traditional teaching has many disadvantages ,the introduction of virtual electrical and electronics laborary become one of the researchs in many colleges. Based on the teaching reform on electrical and electronics laborary in our college, this paper analyzes deficiency of current laboratory, determining design goals of virtual laboratory, describing its some technologies, and illustrates success of new laborary. After the lab was set up, the students’ ability of practice have been improved by the teaching method—combination of virtual and actual train. Furthermore, it makes school resources sharing. The laborary has very broad prospect of application for its benefits.
Design and Realization of Computer Teaching Room Based on VMware Visualization Technology
Authors: Shao Hong Cheng
Published: July 2014

As information technology is developing at an unprecedented speed, computers are widely applied in the process of teaching in colleges. A large number of universities and colleges purchase computers for practical teaching such as experiment, course design as well as visual simulation.
Study on Fire Safety of Building External Thermal Insulation Materials
Authors: Yang Liang
Published: July 2014

Energy-saving and emission-reducing must be achieved based on the reliable performance of fire safety. External thermal insulation material is the main component of external thermal insulation system, and also the main combustion participants when a fire occurs; the combustion performance is an important factor affecting the fire scale of external thermal insulation system. The main material and heat release principle was introduced in this paper, tests were carried out, and fire hazard was analyzed based on large amount of test data. The research will provide theoretical support for external insulation material choice, system construction, fire prevention and rescue.
Application of Visual Correction on Physical Training
Authors: Zhai Qiang
Published: July 2014

A method is presented for three-dimensional motion posture correction employing Fuzzy kernel estimation and affine transformation. As selecting human moving node by a visual sensor and smoothing single frame image with irregular motion, noise interference is reduced. Based on principles of perspective and affine transformation, adjustment strategy of three-dimensional posture is deduced for irregular single-frame motion picture. In addition to determination of motion picture rotation, accurate correction of irregular single-frame motion picture is proposed. Experimental results show that, under different noise conditions, the algorithm corrects posture of a three-dimensional moving image accurately and presents strong anti-noise performance.
Research and Implementation of Groundwater Management Information System Based on J2EE
Authors: Ma Dong Mei , Zhang Hai Ping , Xue Hong Dan , Zhang Ting
Published: July 2014

The design of groundwater management information system: using Struts Spring and Hibernate framework for system design and application development, according to the three layer design of J2EE,the key technology of every layer of the groundwater management information system was designed. The system functions include the basic data maintenance, data analysis, modeling and integrated management. The system provides management personnel with system level support in the analysis of historical data, daily monitoring and groundwater utilization.
Research of the Multimodal English Teaching in the Cloud Computing Environment
Authors: Han Su , Zhang Xin Dai
Published: July 2014

With the rapid development of computers and the Internet, information technology has brought about great changes to our educational field. At present the ubiquitous “cloud service” has brought education into “the cloud era”. Cloud computing has found more applications in our English teaching. Integrating the technology of “cloud computing” with the theory of “multimodal discourse analysis”, this paper researches how to carry out multimodal English teaching in the cloud computing environment.
Design and Implementation of Agricultural Logistics Distribution Vehicle Scheduling System Based on LBS
Authors: Ma Rui , Xie Guo Zhen , Zhang Chi
Published: July 2014

Lack of effective and real-time information in agricultural logistics distribution, which will cause the vehicle cannot accurately obtain the current location and cannot select the best distribution route, results in serious vehicle load and resource waste. Aiming at the problems, this paper proposes an logistics distribution vehicle scheduling system based on LBS. Using three-tier system architecture including application layer, logic layer and data layer, the system provides services of location, navigation, route planning, surrounding location query and agricultural news. Mobile clients can not only receive the latest news about agriculture, but also receive real-time vehicle location and query distribution route planning, which will help the delivery staff complete distribution tasks efficiently, consequently reduce logistics distribution costs and the waste of resources.
Frame Research of the Building Information Model in Project Management Information System
Authors: He Xiang Shuo , Yu Xiao Na , Ma Xue Zeng
Published: July 2014

According to the definition of building information model (BIM), authors compare the merits of traditional project management information system (PMIS) with the one based on the BIM model and BPS framework. Then authors approximately analyze the functions of the PMIS of this framework construction and discuss how this system will interpretably operate in life cycle. Finally authors give some advices on the issues in designing process.
Analysis and Design of Supply Chain Inventory Management System under Internet of Things Environment
Authors: Peng Zhi Ping
Published: July 2014

The networking technology in warehouse management can be automated cargo management, operations and real-time access to inventory. Application networking technology greatly reduces the workload of warehouse management and unnecessary losses. Through the intelligent management of the goods, but also improve the utilization of warehouse space, to enable enterprises to understand the real-time inventory, thereby reducing inventory costs, improve the accuracy of inventory management.
Intelligent Classroom Attendance Checking System Based on RFID and GSM
Authors: Chen Hao
Published: July 2014

Nowadays many colleges use galaxy network technology as well as computer and Internet technology, give full play to various technical means of information network and make good use of various kinds of various education, scientific research and information resources, develop all kinds of application system and management system, realize network interaction management, and thus fully promote the development of higher education informatization. An intelligent classroom attendance checking system is introduced in this paper. As an important part of campus management system, this system can intelligently complete examining students’ attendance. In addition, this system can automatically collect data information in real time, automatically analyze and process the collected data, report these data using visual interface, and thus intelligently implement SMS notification at the same time. The traditional way is to assess, record and manage the attendance of students by roll call or magnetic card, which not only consumes the time, but also interferes with each other; while RFID student attendance application system is applied to manage the attendance of students using RFID technology, which not only completes the attendance checking conveniently and quickly, but also saves resources.
Study on the Effectiveness Evaluation of Missile and Artillery Air Defense Group
Authors: Zhang Pei Chao , Cheng Yuan Zeng , Mei Wei , Cao Bin Qian
Published: July 2014

Currently, missile and artillery air defense system under the conditions of the network has become a very important air defense weapon system, and play an unprecedented role in modern warfare process. To develop high damage performance missile and artillery air defense system has become common goal. It is necessary to study the impact of missile and artillery air defense system damage performance for improving damage probability of missile and artillery air defense system.
A Method for Scale-Up of Grooved Nanofibers via Flat Off-Centered Core-Shell Structure Spinneret
Authors: Wu Hui Hui , Meng Xiao Hua , Zeng Yong Chun
Published: July 2014

An approach to the scale-up of grooved nanofibers via a flat off-centered core-shell structure spinneret has been developed in this study. The spinneret with a flat surface involves shell-holes and off-centered core-needles. The position of the core-needle in the hole and the electrospinning process do influence the formation and structure of the grooved nanofibers. The production rate of the core-shell nanofibers can be enhanced by increasing the hole and needle number of the spinneret. This novel design is expected to provide a promising method towards the massive production of grooved nanofibers.
Research on Travel Time Prediction under the Condition of Urban Rainstorm in Overpass Area
Authors: Bi Song , Zhao Zhong Cheng , Wang Guan , Kong Lin , Diao Qi , Han Cun Wu , Sun De Hui
Published: July 2014

Overpass is an important hub for urban road network facility, its traffic capacity severely restricts that of the entire road network. Since overpass area is easy to gather water in urban road network, rain water under the overpass is an important incentive for traffic jams. In this paper, a reliable and easily maintainable method is discussed to detect the depth of the road surface water, which designs and implements a monitoring system of urban road network ponding depth. Based on this, technique of predicting travel time has been researched about overpass area under water-logging condition. Through a real example, the technique discussed in this paper has been proved to be highly effective and veracious, and can be used to provide basic data for traffic guidance to plan out sound routes.
Analysis and Design on Sports Meeting Information System
Authors: Chen Li Hua , Niu Tie Zhu
Published: July 2014

In the course of sports meeting, managing large amounts of data by hand is very difficult, the computer will be used in sports meeting management, accuracy and efficiency of data processing provides an important safeguard, in this paper, the sports meeting information system analysis and design. First, workflow analysis, pointed out the modern sports meeting work flow, as the basis for the next software development work; Then, functional requirements analysis, modeling example through interaction with each participant to clarify the main functions of the system implementation; Finally, the framework structure design, design the SSH three layer frame structure based on J2EE, for the presentation layer, business logic, data access layer is described in detail. To study the content of this article is based, easy to construct, easy maintenance, good reusability Web systems.
Effect of Hg in Jiaozhou Bay Waters - The Vertical Variation of the Hg Content
Authors: Yang Dong Fang , Zhu Si Xi , Wang Feng You , Yang Xiu Qin , Wu Yun Jie
Published: July 2014

Based on the investigation data of mercury (Hg) in both surface and bottom waters in Jiaozhou bay in 1979 to 1981, this paper tried to analysis the vertical variations of Hg contents, and to reveal the transfer processes of Hg in the bay. Results showed that, Hg pollution in the bay is mainly discharged from the major rivers, the seasonal variations of Hg content in surface waters showed a similar trend in different years, with an order of spring (or summer) > autumn. The Hg contents in bottom waters were mainly determined by the sedimentation of Hg from surface waters. There were major three transfer processes of Hg as, 1) Hg from various pollution sources was transported to streams by rainfall, 2) Hg in streamflows was discharged to surface waters of the bay, and 3) Hg in surface waters was sedimented to the bottom of the bay.
Design and Implementation Based on Java EE Student Attendance System
Authors: Zhao Zhi Hao , Chen Ya Bing
Published: July 2014

In this paper, according to the actual students management work in the school, and link to the student attendance work, we propose one design of the B/S structure system of student attendance management based on the Java EE framework. The system realizes performances such as request and approval leave online, students' attendance data summarize, and others which reduce the workload of student management and improve the working efficiency. With the rapid development of mobile network on campus, this system also has carried on the development of mobile terminal, to further expand the scope of application of the system with the desktop of the student management system transplantation.
Effect of Post-Weld Heat Treatment on Carbide Precipitation and Impact Properties of Coarse-Grained Heat-Affected Zone of Q690 Steel
Authors: Li Zhen Shun , Li Sheng Li , Tian Lei , Zhang Xiang Hai , Liu Ji Zhi
Published: July 2014

The effect of post-weld heat treatment (PWHT) on carbide precipitation and impact properties of coarse-grained heat-affected zone (CGHAZ) of Q690 Steel was studied in this paper. Carbide particles precipitated primarily at prior austenite grain boundaries and martensitic lath boundaries. When the PWHT temperature is 520–570 °C, temper embrittlement occurs. This temperature range is also where the number of carbide particles per unit area at grain boundaries reaches its maximum. The high number of particles per unit area increases the rate of crack initiation at grain boundaries under rapid loading; linking of microcracks along grain boundaries which are already weakened by impurity segregation results in TE and intergranular fracture.
Mechanical Properties of Chopped Carbon Fiber Reinforced PBS/CF Composites
Authors: Li Wei , Qu Jin Ping
Published: July 2014

Chopped carbon fiber (CF) reinforced PBS/CF composites were prepared by twin-screw extrusion processing. The effect of adding a certain quantity of CF in composites on the tensile, flexural and impact properties have been investigated. The results indicated that the tensile properties, flexural properties and impact properties of the PBS/CF composites were first improved and then decreased with the increase of the content of CF.
Study on the Impact of DO and Organic Matter on Aerobic Granular Sludge Treating Municipal Sewage
Authors: Yu Yang , Yu Hai Jiao , Ma Chen Ci
Published: July 2014

The experiment uses municipal sewage as the research object and runs SBR reactor in completely aerobic conditions. Through controlling different of DO concentration and COD concentration, we study spreading comparison. The results show that when DO concentration was 1mg/L, the removal effect of aerobic granular sludge process in SBR treating municipal sewage was best, the average removal rate of COD, ammonia nitrogen, total nitrogen and phosphorous was 90.12%,98.95%,87.65% and 83.74% respectively. When COD concentration of influent was about 400mg/L, the treatment effects of aerobic granular sludge for COD, ammonia nitrogen, total nitrogen and phosphorous were all better, the average removal rate was up to 92.33%,98.83%,88.17% and 80.25% respectively.
Research on Properties of CB/EVA Semiconductive Shielding Composites
Authors: Han Bao Zhong , Li Chun Yang , Zhang Cheng Cheng , Li Chang Ming
Published: July 2014

In order to select suitable carbon black (CB) for manufacturing semiconductive shielding materials of XLPE insulated high voltage cable, the composites were prepared with the melt blending method by adding CB with different properties into ethylene/vinyl acetate copolymer (EVA). The volume resistivity, mechanical property and rheological property of the composites were measured. The effects of the properties and content of CB on the various properties of the composites were investigated and their mechanism was analyzed. The research results show that both structure and specific surface area of CB have great effects on the volume resistivity and rheological property of the composites. Because high structure CB usually has high specific surface area, the high structure CB/EVA composites have low percolation threshold and low rheological property. The EVA composites containing low structure CB with larger specific surface area exhibit low conductivity and high melt viscosity. When the mass fraction of CB with low structure and small specific surface area reaches 35%, the volume resistivity of the composites is approximately 100 Ω·cm and the rheological property of the composites is obviously superior to the composites filled with high structure CB. The CB with small specific surface area and low structure as conductive filler is beneficial for good conductivity and extrusion processability of the semiconductive shielding materials.
Attenuation Characteristics of Ultrasonic Velocity and Acoustic-Based TC4 Alloy Uniformity Nondestructive Evaluation
Authors: Wu Guan Hua , Lu Yi Fan , Huang Ying Xia , Wu Wei
Published: July 2014

ultrasound characteristics of the material microstructure nondestructive evaluation of its experimental sample TC4 titanium alloy microstructure of two-phase microstructure:. Α-phase and α + β phase. Phase material microstructure and grain area ratio directly affects the material uniformity, uniformity of material differences caused by different grain characteristics which ultrasound parameters. Flooding experiments using ultrasonic method for measuring the material longitudinal wave velocity; measuring the sound attenuation coefficient, combined with the area ratio of the sample α using multiple pulse method. Associated with the sample area ratio between the speed of sound and sound attenuation analysis of α-phase titanium alloy TC4 through the material properties of ultrasound to characterize the degree of uniformity of the material microstructure, nondestructive evaluation of materials in order to achieve the purpose of the microstructure.
The Preparation of ZnO: Al Thin Films on Flexible Substrates by Magnetron Sputtering Method
Authors: Wang Xiao Jing
Published: July 2014

ZnO: Al film was deposited on TPT substrate with SiO2 buffer layer by RF magnetron sputtering. The obtained film had a hexagonal structure and highly (002) preferred orientation. The lattice constant distortion of the film with buffer layer was decreased and the compressive stress was 0.779GPa. The carrier concentratio reached to 3.15×10+20/cm3. The resistivity of ZAO film with SiO2 buffer layer was about 9.2×10-3 Ω·cm and the average transmittance was over 72% in the range of 380~900nm.
Structural and Optical Properties of Al Co-Doped ZnCoO Thin Film
Authors: Cao Ping , Bai Yue
Published: July 2014

Al co-doped ZnCoO thin film has been prepared by a sol-gel method. The structural and optical properties of the sample were investigated. X-ray diffraction and UV absorption spectroscopy analyses indicate that Al3+ and Co2+ substitute for Zn2+ without changing the wurtzite structure. With the Al doping, the visible emission increased and the UV emission decreased, which is attributed to the increase of O vacancies and Zn interstitials.
A New Type Aluminum Alloy Backup Frame of FAST Project
Authors: Zhao Bao Qing , Wang Qi Ming , Zhao Qing , Gu Xue Dong , Hu Jin Wen
Published: July 2014

Distinct from conventional truss, FAST project reflector elements require light weight, high accuracy backup structure. A new type of aluminum alloy frame backup element is designed and simulated. According to which, an aluminum alloy backup element prototype is manufactured and assembled at the under-construction site. And with a serial of measure experiments, the prototype data meets the requirements. Thus the design and experiments verify the efficiency of the structure.
The Higher Order Crack Tip Fields for Anti-Plane Crack in Linear Functionally Graded Piezoelectric Materials
Authors: Dai Yao , Chong Xiao , Li Shi Min
Published: July 2014

The crack tip field in functionally graded piezoelectric materials (FGPMs) under mechanical and electrical loadings is studied. Different from previous analyses, all material properties of the functionally graded piezoelectric materials are assumed to be linear function of y perpendicular to the crack. The crack surfaces are supposed to be insulated electrically. Similar to the Williams’ solution of homogeneous elastic materials, the higher order crack tip fields of FGPMs are obtained by the eigen-expansion method.
Synthesis of Nickel(II) Complexes and its Application to Ethylene Oligomerization
Authors: Kou Jian Bo , Zhao Shu Na , Cao Chen Gang , Zhou Hui , Hu Kai Hui , Peng Min , Su Guo Sui , Jiang Tao , Dong Jin Yong
Published: July 2014

A kind of N-((3-chloro-1H-indol-2-yl) methylene)-2,6-diisopropylbenzenamin Ni (II) complex has been synthesized. Ethylene oligomerizations were carried out by using those complexes in combination with methyl aluminoxane (MAO) and produced olefin. The effects of important parameters such as temperature and MAO concentration. on the catalytic activity and the distribution of resulting oligomer were investigated.
Structure of Bridged Silsesquioxane Material Bearing a Pendant Dodecylamine
Authors: Lin De Rong , Hu Li Jiang
Published: July 2014

In this study, the optimum reaction conditions of preparing bridged monomer by dodecylamine (DDA) and of γ-(2,3-epoxypropyl) trimethoxysilane (GPMS) were obtained at 60°C water bath for 36h. The synthesized materials were characterized by infrared spectroscopy (IR), atomic force microscopy (AFM), Scanning Electron Microscopy (SEM) and water contact angle (CA). The result of FTIR indicates the formation of the DDA and GPMS bonded reactions during the synthesis of monomer, and preparation of the skeleton structure. Characterization of AFM on the structure of the surface morphology of the acid-catalyzed materials indicates the formation of layered structure. The acid-catalyzed materials were characterized by SEM indicates the rough structure of micron-level, which was conducive to the hydrophobic properties of the material.
Effect of Temperature on the Growth and Biochemical Composition of Sargassum muticum
Authors: Yuan Chun Ying , Yang Shuo , Wang Yue , Cui Qing Man
Published: July 2014

Under the laboratory conditions, the effect of temperature (10, 15, 20, 25, 30°C) on growth and biochemical composition of Sargassum muticum was studied, the results showed that: the optimum growth temperature of S.muticum was 15 °C in the range of 10-30 °C; the contents of chlorophyll a, carotenoid, soluble protein, soluble sugar and brown algae polyphenols were the highest at the temperature of 25 °C, it was speculated that these components appeared compensatory increase duo to the high temperature stress. The contents of these biochemical components were the lowest at 30 °C.
Numerical Simulation of Cr12MoV Steel during Quenching Process
Authors: Zhang Wei , Qu Zhou De , Deng Xiao Hu , Duan Xing Wang
Published: July 2014

The excessive residual stress induced by quenching in steels will easily result in distortion and failure of parts. In order to obtain the more suitable quenchant, quenching process of Cr12MoV steel with different mediums involving water and oil are simulated, respectively. In present paper, the influence of nonlinear surface heat transfer coefficient, thermodynamic parameters and latent heat are considered comprehensively. The distribution of temperature, microstructure, hardness and residual stress after quenching for Cr12MoV steel are simulated by DEFORM finite element software. According to the results mentioned above, the variations of each field of the steel are analyzed.
Discussions on the Pretreatment of the Air-Conditioning/Cotton Blended Fiber – The Application of Tea Saponin
Authors: Zhang Yong Jiu , Zhang Yi Yan
Published: July 2014

The air-conditioning/cotton blended fiber was pretreatment to investigate the effects of the sodium hydroxide, hydrogen peroxide, scouring agent, tea saponin, oil removing agent, the processing temperature and the processing time on the fabric. The values of capillary, strength, whiteness were got after single factor tests. The results showed that the best pretreatment process was at 90°C, tea saponin 4g/L,oil removing agent 3g/L and the processing time 30min.Through this process, the strength of the fiber was 165cN, the whiteness was 71.2% and the capillary is 10cm.Tea saponin is a main factor only second to temperature.
Effect of Mixed Multiple Rare Earth Oxide on the Microstructure of Bioceramic Coating Prepared by Wide Band Laser Cladding
Authors: Zhang Zheng , Liu Qi Bin , Zhang Ling Yan , Jiang Hai Bin , Jiang Pei Ze
Published: July 2014

In order to researching the microstructure of bioceramic coating on the surface medical titanium alloy (Ti–6Al–4V), the gradient bioceramic coatings are fabricated by wide-band laser cladding. The influence of multiple rare earths oxide La2O3 and CeO2 on microstructure of bioceramic coating were studied. The experimental results demonstrated that mixed La2O3 and CeO2 have an effect on forming-ability of HA\β-TCP in bioceramic coating and also refined the grain of bioceramic coatings. The largest amount of HA\β-TCP is presented among all the groups when the contents of La2O3 and CeO2 are 0.6wt.%, 0.4 wt.%, respectively.
On Pretreatment Experimental Study of High Strength Gypsum by Yunnan Phosphorus Gypsum
Authors: Quan Si Cheng , Zhao Zhi Man , Tian Rui , Han Song
Published: July 2014

This thesis mainly studies the preprocessing of making high strength gypsum powder by using phosphogypsum. And bring out the new preprocessing of phosphogypsum from the traditional methods. And the new method improved the traditional 3 kinds of processing methods. After processing of phosphogypsum, strength and crystal morphology were compared to shown the better one.
Simulation of Vapor Absorption of Aqueous Libr Solution on Alternate Heat and Mass Transfer Surfaces of Corrugated Plates and Mesh Pecking
Authors: Cao Rui Bing , Chen Ya Ping , Wu Jia Feng
Published: July 2014

The traditional tube-shell absorber is relatively too bulky to be used in a small absorption chiller for solar air conditioning. As the outer-surface of solution film on the traditional absorber surface is easier to be saturated, several alternate heat and mass transfer absorber schemes have been proposed. However, the film-inversion absorber uses only half surfaces while the dual-side film-inversion absorber scheme is of good performance but too complicated to fulfill. The scheme using stainless steel mesh packing as the film guider is much easier and more uniform in distributing film, and it can also act as the framework for exposing dual-side film to the vapor for adiabatic mass transfer. The alternate heat and mass transfer configurations with plate surfaces and mesh packing are of promising performance for small chiller absorbers.
A New Harmless Disposal Method of Aluminium Phosphide Residue
Authors: Wang Xiang Cheng , Li Dan , Duan Sheng Liang , Li De Bing , Qi Xiu Li
Published: July 2014

Treatment phosphine gas with absorption oxidation, let gas went through the oxidant solution. Use concentration of sodium hypochlorite 1%-8% (w/w) as oxygenate, the absorption rate of phosphine [φ] was various form 41% to 61%. Compared with the other phases, such as hydrogen peroxide, potassium permanganate, iron trichloride, sodium hypochlorite is better as oxidation agent in the process of phosphine gas absorption oxidation.
Efficiency Prediction of Limestone-Gypsum Wet Desulphurization Based on Support Vector Machine
Authors: Yang Jian Meng , Sun Bo Shuo , Qi Nian Zhe
Published: July 2014

This paper studies the prediction of power plant desulfurization efficiency, based on support vector machine through the meshing method for parameter optimization, establish a prediction model, with the running of the actual data to predict the results: mean square error (MSE) is 0.00259324, the correlation coefficient (R) is 0.979927%, the largest error is less than 1.5%, the results show that the established forecast model based on support vector machine (SVM) with high accuracy to predict the desulfurization efficiency, and can satisfy the engineering need of flue gas desulfurization efficiency prediction.
Research on Failure Mechanism Consistency in Accelerated Wear Test of Metal Materials
Authors: Ma Xiao Bing , Cheng Bo
Published: July 2014

The accelerated wear test of metal materials is researched, and the boundary conditions which required by failure mechanism consistency receive a meaningful exploration. This work presents a physical model about the boundary of accelerated stress to support accelerated test design. According to the material properties, the accelerated stress is restricted by three boundaries which are the boundary of the normal load, the boundary of relative speed and the boundary of their product. This research shows that failure mechanism consistency in accelerated wear test manifests as consistency of parameters in statistics, yet in physics, it depends on the three boundaries.
Co-Expression of Threonine Dehydratase and Acetolactate Synthase in Escherichia Coli for L-Isoleucine Production
Authors: Wang Jian , Sun Jia Kai , Xu Qing Yang
Published: July 2014

Metabolic engineering ofCorynebacterium glutamicumhas sought to divert carbon into L-isoleucine. However, the fermentation period of this strain is long. TheC.glutamicumYILW strain (LeuL, AHVr, SGr, Leu-MEr) was previously derived by repeated compound mutagenesis which could accumulate 20.2 g/L L-isoleucine in a 5-L jar fermentor. Overexpression of the threonine dehydratase gene (ilvA) fromCorynebacterium glutamicumYILW and coexpression of threonine dehydratase and acetolactate synthase (ilvBN) from it were employed to divert carbon flux toward L-isoleucine. The strainE. coliTRFC with the expression ofilvA could accumulate L-isoleucine of 6.8 g/L without accumulation of any L-threonine by fed-batch fermentation in a 5-L jar fermentor. However, the production of L-isoleucine by the strainE.coliTRFC with the co-expression ofilvA andilvBN was decreased by 19.1%, and the production of L-valine was increased by 40% compared with that ofE. coliTRFC with the expression ofilvA.
Substituted Quinoline Derivatives as Potent Biological Agents
Authors: Garudachari Bhadrachari , lsloor Arun M.
Published: July 2014

Quinoline derivatives are the most promising class of active pharmaceutical agents compared with other heterocyclic compounds. Biological activity profile of quinoline can easily be controlled by introducing some active pharmacophore to the core ring. This chapter deals with the synthesis of quinoline derivatives and its biological activity. The enhancement of biological activity by incorporation of active functional group and effect of these functional groups were explained briefly. Main focus is given to the synthesis of different substituted quinoline derivatives for biological application with respect to the position on the quinoline core ring and modification of quinoline ring.
Congenital Heart Diseases and Biotechnology: Connecting by Connexin
Authors: Sultana Naznin , Nakamura Nobuhiro , Hirose Shigehisa , Kutsuzawa Koichi , Akaike Toshihiro , Nag Kakon
Published: July 2014

Heart development is a precisely harmonized process of cellular proliferation, migration, differentiation, and integrated morphogenetic interactions, and therefore it is extremely vulnerable to developmental defects that cause congenital heart diseases (CHD). One of the major causes of CHD has been shown to be the mutations in key cardiac channel-forming proteins namely, connexins (Cxs). Cxs are tetra-spanning transmembrane proteins that form gap junction channels and hemichannels on cellular membrane. They allow passage of small molecules or ions between adjacent cells or between cells and the extracellular environment. Studies have revealed that the spatiotemporal expression of Cxs mainly, Cx31.9, Cx40, Cx43, and Cx45 is essentially involved in early developmental events, morphogenetic transformations, maturation, and functional significance of heart. Our lab and others have shown that mutations in gap junction proteins could result in impaired trafficking, misfolding, and improper channel function of these proteins. It has also been shown that differential expressions of cardiac Cxs are associated with pathophysiological conditions of heart. Collectively, these conditions are coupled with abrogated or modified functionality of relevant channels in cardiac tissue, which are associated with many pathological situations, including CHD. Since CHD are a major cause of morbidity, therefore recovery of such kind of heart defects associated with Cxs is extremely important but remains highly challenging. In this review, we will summarize the role of Cxs in development, morphogenesis, maturation, normal function, and pathology of heart, and propose possible bioengineering techniques to recover defects in cardiac tissues related to the modified functions of Cxs.
Electroluminescence in Chalcogenide Nanocrystals and Nanocomposites
Authors: Ramrakhiani Meera , Gautam Nitendra Kumar , Kushwaha Kamal , Sahare Sakshi , Singh Pranav
Published: July 2014

Several research groups have reported that nanocrystalline II-VI semiconductors show enhanced luminescence, increased oscillator strength and shorter response time. Nanocrystalline powder samples of CdS, CdSe, ZnS and ZnSe nanocrystals and their composites with PVA and PVK have been prepared by chemical route. SEM. TEM and AFM images indicate agglomeration of particles. XRD reveal the crystal structure and size in nanometer range and absorption spectra show increased band gap due to quantum confinement.The EL studies on nanocrystalline powder samples and nanocrystal/polymer composites have shown that the light emission starts at certain threshold voltage, different for different specimens and then increases with increasing voltage. It is found that smaller nanocrystals have lower threshold voltage and higher EL brightness. It is observed that nanocomposite give much higher electroluminescence starting at lower voltage and increasing very fast with the voltage as compared to nanocrystalline powder. The emission spectra are found to depend on the material, crystalline size and doping. Electroluminescence in undoped and doped chalcogenide nanocrystals and nanocomposites is reviewed in this paper. In nanosize regime, electroluminescence (EL) is governed by the size quantization effect. Contents of Paper
Thermoluminescence of Persistent Luminescent Materials
Authors: Gartia R.K. , Chandrasekhar Ngangbam
Published: July 2014

Persistent luminescence as well as Thermoluminescence (TL), both the phenomena are nothing but long-period afterglow having lifetime (τ) in the broad range of few minutes to few days. Therefore, it is nothing but natural that all persistent luminescent materials exhibit excellent thermoluminescence. This review critically discusses the data available in literature and provides a commentary on the trap-spectroscopy of persistent luminescent materials as a whole with special emphasis to commercial materials that have found wide applications in safety signage, road sign display as well as sensors for structural damage and in vivo medical imaging. Finally, it also provides some “thumb-rules” to eliminate few fatal misconceptions that have crept into the literature
Luminescence Instrumentation
Authors: Jain Mayank , Bøtter-Jensen Lars
Published: July 2014

This chapter gives an introduction to instrumentation for stimulated luminescence studies, with special focus on luminescence dating using the natural dosimeters, quartz and feldspars. The chapter covers basic concepts in luminescence detection, and thermal and optical stimulation, and reference irradiation. It then briefly describes development of spectrometers in dating applications, and finally gives an overview of recent development in the field directly linked to novel instrumentation. Contents of Paper
TLD Instrumentation: A Case Study of PC Controlled TL Reader
Authors: Reddy J.N. , Murthy K.V.R.
Published: July 2014

Thermoluminescence reader is an important tool and a requisite for a researcher to study and characterize Thermoluminescence (TL) materials in different forms. Requirement for a versatile PC Controlled TL Reader has been felt for quite some time globally. Nucleonix Systems, Hyderabad, India, have developed a PC Controlled TL Reader by integrating complete electronics hardware circuits (comprising of Power Electronics, Low/High voltage Supplies, Temperature Controller, Micro Controller based data acquisition circuits having serial counter, ADC, DAC, EEPROM, PMT, PMT housing, sample heating system, drawer assembly, etc.) in a single enclosure. The system also integrated with software to calculate the activation energy (E), frequency factor (S) and order of kinetics ‘1’ for the prominent glow peaks using different equations.This Integral TL Reader unit gets connected to the Personal Computer System through serial port RS232C/USB port. The user interface to the system is through front–end VB software defined Graphics User Interface (GUI). The system also contains some of the software features like glow curve acquisition, analysis, filing, printing, plotting, overlapping, maker data reporting, etc. Additionally, system facilitates single/two/three plateau heating with variable heating rates.The primary objective of this development is to bring out versatile TL instrumentation system and also to make it affordable to many of the researchers in the Universities and other areas, including Radio-therapist, Medical Physicists in Cancer Hospitals. This system has been evaluated for its performance with CaSO4: Dy discs, powder, as well as with LiF: Mg, Ti chips. Linearity and reproducibility have been found to be quite satisfactory also within +2%. This system is quite useful to study the TL of phosphor, minerals and characterization of various solid semiconducting materials, and also can be used in personal dosimetry measurements and research studies in medical dosimetry, environmental radiation monitoring, and host of other applications in R&D Labs., etc.
Closed-Form Solution of the Frictional Sliding Contact Problem for an Orthotropic Elastic Half-Plane Indented by a Wedge-Shaped Punch
Authors: Kucuksucu Aysegul , Guler Mehmet A. , Avci Ahmet
Published: July 2014

In this paper, the frictional contact problem of a homogeneous orthotropic material in contact with a wedge-shaped punch is considered. Materials can behave anisotropically depending on the nature of the processing techniques; hence it is necessary to develop an efficient method to solve the contact problems for orthotropic materials. The aim of this work is to develop a solution method for the contact mechanics problems arising from a rigid wedge-shaped punch sliding over a homogeneous orthotropic half-plane. In the formulation of the plane contact problem, it is assumed that the principal axes of orthotropy are parallel and perpendicular to the contact. Four independent engineering constants , , , are replaced by a stiffness parameter, , a stiffness ratio, a shear parameter, , and an effective Poisson’s ratio, . The corresponding mixed boundary problem is reduced to a singular integral equation using Fourier transform and solved analytically. In the parametric analysis, the effects of the material orthotropy parameters and the coefficient of friction on the contact stress distributions are investigated.