bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical Properties of Water-Permeable Concrete Using Coated Recycled Aggregates and Material for Performance Improvement
Authors: Jang Young Il , Kim Yun Yong , Park Wan Shin
Published: December 2013

The mechanical properties of water-permeable concrete after mixing with coated recycled aggregates, silica fume, and PVA fiber were investigated in this study. Recycled aggregate was coated double-layer and then mixed as the coarse aggregate of water-permeable concrete. As a result, the void ratio, water-permeability coefficient and strength decreased, as compared to concrete with mixed crushed aggregates. When both silica fume and PVA fiber was added, the strength of the water-permeable concrete increased (compressive strength : by 4.3%, flexural strength : by 2.1 times). Also, the freeze and thaw resistance of the water-permeable concrete increased by approximately 44.15% compared to the plain concrete with no added reinforcing element.
Analysis on Calcination of Cementitous Powder of Waste Concrete for Raw Cement
Authors: Kwon Eun Hee , Lee Young Jun , Cho Gyu Hwan , Dong Cheon Park
Published: December 2013

The purpose of this study is to determine whether cementitous powder of waste concrete which is separated from waste concrete can be used as alternative raw material for limestone. Chemical composition of cementitous powder of waste concrete was actually analyzed and the experiment to measure the recovery of hydration of waste cementitous powder model was performed. As a result, hydration was recovered to the level at which it can be used as alternative raw material for limestone, but less than 10 % can be used due to mix of fine aggregate in less than 150μm which cannot be separated from cementitous powder. Therefore, development of technology to efficiently separate cementitous powder of fine aggregate is required to have the alternative material for limestone and effect for reduction of greenhouse gas.
Suitability of Surface Water for Concrete Mix (Case Study of Kwanar - Are Reservoir, Katsina, Nigeria)
Authors: Hamisu B.I.
Published: December 2013

Kwanar-Are reservoir is located along Katsina Kano Federal road (Northern Nigeria). It has been used for over two decades as a source of water for irrigation and infrastructural development in Kasina city and environs.This study is intended to determine the quality of water in the reservoir to establish its suitability or otherwise for use in mixing concrete. The investigation is very necessary having in mind that the irrigarion activities take place on substantial portion within the reservoir for which the long term application of fertilizer and pesticides might have negetive impact on it. Samples of water were collected and examined. Parameters such as pH value, chlorides, sulphates, alkalies, and solids as well as organic impurities were determined which essentially affect the setting time of cement, strength, durability and other properties of the concrete. Result obtained shows the tested parameters in negligible quantities. Metals are in trace quantities also. The determined compressive strength of concrete cubes of the diamension 150x150x150 made from water in the reservoir for 7 and 28 days after curing are within normal range. Frequent monitoring of the reservoir is necessary by all stake holders especially the Regulatory Bodies of water resources in Katsina state.
Building Sensor Grid Architecture for Large-Scale Air Pollution Data Management
Authors: Ma Ya Jie , Mei Zhi Jian , Tian Xiang Chuan
Published: December 2013

Large-scale sensor networks are systems that a large number of high-throughput autonomous sensor nodes are distributed over wide areas. Much attention has paid to provide efficient data management in such systems. Sensor grid provides low cost and high performance computing to physical world data perceived through sensors. This article analyses the real-time sensor grid challenges on large-scale air pollution data management. A sensor grid architecture for pollution data management is proposed. The processing of the service-oriented grid management is described in psuedocode. A simulation experiment investigates the performance of the data management for such a system.
Eco-Costs of Air Pollution on Construction Equipment: A Comparison of Different Emissions Reduction Measures
Authors: Zhang Lian Ying , Zhang Si Lu
Published: December 2013

Eco-costs are a measure to indicate environmental burden of aproject or aproduct. This paper presents a practical applicationof Eco-costsModel in evaluating different emissions reduction measures on construction equipment.We propose acomparison model withthe input data of emission reduction percentageand Eco-costs of emissions. Then, six emissions reduction measures are chosen to develop detailed processes in using the comparison model.The study provides a guide in evaluating air pollution ofdifferent emissions reduction measures on construction equipment, which shows a theoretical foundation on selecting emissions reduction measures.
Eco-Engineering Measures for the Sandy Side-Slope Protection of Newly Regulated Rivers in Humid Region
Authors: Cai Shou Hua , Zhou Xing Wei
Published: December 2013

In humid region, the natural vegetation coverage has not restored well on the side-slope of the newly-regulated rivers before the first rainy season comes. The plants which are planted on the side-slope have also not grown enough roots to stabilize the side-slope. As a result, on the sandy side-slopes serious erosion and collapse often occurs. Thus, in order to safely ride out the first rainy season after regulation, this paper presents some ecological slope-protection measures to utilize annual ryegrass and willow branches. The experiments show that planting annual ryegrass on the sandy side-slope can effectively prevent the side-slope from eroding and safely ride out the first rainy season after regulation. Meanwhile, the restoration of native vegetation wont be hindered. If the sandy side-slope is steeper, i.e., its stability is poorer, besides planting annual ryegrass, planting willow branches-root hedges in the side-slope is also necessary. Planting willow branch-root hedges can improve the survival rate of willows and the closure of plant hedges, and thus significantly enhance the stability of sandy side-slope.
Diffusivity Resistance of Concrete Systems in Chloride Rich Environment for Corrosion Protection of Embedded Steel Bars
Authors: Al-Bahar Suad Khalid , Salam Safaa M. Abdul , Husain Adel M.
Published: December 2013

Improving concrete performance and minimizing corrosion-induced deterioration of reinforced concrete structures are mandated Building Codes Practices and Specifications in arid regions such as the Arabian Gulf. Concrete structures resist corrosion due to the passivating properties of the hydrated cement around the steel reinforcement created by the high alkaline environment within the composite structure (pH > 12). However, the presence of chloride ions in the pore structure of the concrete destroys this passivating layer, which makes the steel reinforcement vulnerable to chloride-induced corrosion attack that accelerates degradation and deterioration of concrete structures. Corrosion activities-related tests such as Time-to-Corrosion Initiation (Modified ASTM G-109)6, and Corrosion Rate Test (Lollipop Test), can be effectively used to monitor the behavior of corrosion development, while chloride ingress characteristics tests such as Electrical Indication of Concretes Ability to Resist Chloride Ion Penetration ASTM C-1202-91)7, and the Resistance of Concrete to Chloride Ion Penetration (AASHTO T 259-80)8, are applied to evaluate the rate at which chloride ions can diffuse through concrete to onset the time-to-corrosion initiation, which will impact the structure service life and compromise its sustainability. Efforts have been made by scientists to develop mathematical simulation models that predict the service life of the structure based on Ficks Second Law for semi-finite diffusion of chloride ions, concentrated at different concrete depths. The study concluded that mineral admixtures have contributed to the enhancement of concrete performance and its resistance to chloride diffusivity, as well when in combination with corrosion-inhibiting admixture such as calcium nitrite.
Development of Dry Wall Panels Using Fly and Bottom Ash
Authors: Kim Kyoung Woo , Jeong Gab Cheol , Yang Kwan Seop
Published: December 2013

Because of the high-rise of apartment houses, diversity of planar forms, and need for environmental improvement, the development of eco-friendly dry materials becomes necessary. Dry wall panels should be easy enough to use that they can be installed and dismantled, and have fundamental performance items for dry wall (sound insulation, fire resistance, strength, specific gravity etc.). In this study, we intend to develop dry wall panels using eco-friendly and recyclable byproducts of a thermal power plant such as fly ash and bottom ash. With the performance items and level set to develop dry wall, we developed dry wall panels by adjusting mixing ratio.
Analysis of Bursting Crack of Bottom Slab and Reinforcement for a Large Continuous Girder Bridge
Authors: Jie Zhi Yu , Wei Xing , Li Ya Dong
Published: December 2013

A large railway bridge is using (46.4 + 64 + 46.4) m double-line prestressed concrete continuous girder. In the construction process, bottom slab concrete in the mid span appears serious bursting crack phenomenon. Through the whole bridge stress analysis and closure segments locally fine finite element stress analysis, it appears tensile stress and large compressive stress in operational stage. Finally the bottom slab reinforcing schemes are proposed. It makes the following conclusions by analysis: (1) through the overall and local analysis stresses meeting the design requirements after reinforcement; (2) according to the domestic and foreign research experience, bursting crack reason of bottom slab is that prestressed pipes deviation from the design positions and anti-collapse steel bars are not set in place.
Study of the Additional Anti-Corrosion Measures of Bridge Pier Caps Concrete in Beijing-Shanghai High Speed Railway
Authors: Wang Cheng Cheng , Ye Yue Zhong , Liu Tong Chao
Published: December 2013

Based on the analysis of corrosion mechanism, combining with the characteristics of bridge structure, aiming at the existence of corrosive medium and complex physical environment, such as the freezing thawing, corrosion and chlorine salt as well as dry wet, freeze-thaw cycle [, This paper expounds the research and construction practice of the additional anti-corrosion measures of bridge pier caps concrete in Beijing-shanghai high speed railway. It has a certain guiding significance to the similar Bridges in corrosion protection construction.
The Study of High Temperature Performance of Asphalt Modified by Trinidad Lake Asphalt
Authors: Yang E. , Zhang Xiao Ning
Published: December 2013

In this paper, the relationships between the high temperature performance of two different kinds of asphalt modified by Trinidad Lake Asphalt and the different amounts of the Trinidad Lake Asphalt were investigated,The results showed that: Trinidad Lake Asphalt could increase the-softening points of the modified asphalts, reduce penetration and enhance the viscosity. However, the variation trends of each index in two modified asphalts were different; among the high-temperature dynamic rheological performance indexes, complex modulus became larger, phase angle became smaller, and rut factor increased. These results indicated that Trinidad Lake Asphalt can effectively improve the high temperature stability and the modified asphalt had higher resistance stability to rutting. The complex modulus of modified asphalt with different amount of the Trinidad Lake Asphalt had the similar variation trends with frequency, The asphalt modified by Trinidad Lake Asphalt should be delayed elastic body, and its sensitivity to the frequency had no obvious improvement.
Joint Displacement Evaluation of a Modular Road System
Authors: Kim Woo Seok , Park Soo Bong , Lee Kang Min , Song Jae Joon , Lee Sang Yoon
Published: December 2013

Transportation agencies have recently been struggling to carry out rapid roadway construction and repair work with minimal disruption to the motoring public, and they are pursuing sustainable and perpetual roadway systems with minimal maintenance over their service life. This study sought to develop a roadway joint system as a part of research on a sustainable-perpetual-modular (SPM) roadway system. In this study, two boundary conditions were considered with varying support offsets. Dead load, live load, and temperature load were considered and the corresponding displacements were computed. Roller supports at both ends produced larger displacements compared to hinge supports at both ends. Analysis results exhibited that a support offset equal to 0.0 m produced the smallest displacement. The results of this study will provide valuable information for the design of modular roadway joint systems.
Fractal Characteristics of Mountain Cities' Traffic Flow Based on EMD and Multifractal
Authors: Zhao Ling , Cao Juan , Mi Bo
Published: December 2013

Aim at the characteristics of the mountain cities road traffic network, the short-time data signals in the congestion state of the road network traffic is analyzed. Fractal characteristics of traffic data signal is in research based on the self-similarity of the traffic data signals. The non-stationary property of the traffic flow signal in the congestion state is known through the calculation of the multifractal spectrum of the traffic flow signal based on EMD. The experimental results show the feasibility of the method, which also can provide theoretical support for the traffic flow control of the mountain city road network in the sub-health state.
Numerical Analysis of Triplet Shear Test on Brickwork Masonry
Authors: Wang Jun Zhe , Heath Andrew , Walker Pete
Published: December 2013

Shear failure is often found for masonry structure when subjected to complex loading. This paper presents the numerical analysis of shear strength test on triplet masonry specimens under different normal compressive stresses. Two different models were produced using a commercially available finite element analysis package ANSYS. The first model is a continuum model with the brick unit modeled as linear elastic material, while the mortar joints are modeled using a Drucker-Prager (DP) material or a concrete material. In the second model, the mortar joints as well as the brick/mortar interfaces were represented by a series of contact elements, and the Mohr-Coulomb failure surface was employed by these contact elements. Comparisons with the experimental results show that both models give satisfactory predictions for the maximum failure load, while the finite element model with interfaces has a better performance in terms of the load displacement response.
Numerical Analysis on Failure Modes of Steel Frame under Fire Combined Blast Loads
Authors: Yan Shi , Yang Lu , Jiang Xue Lei
Published: December 2013

An H-shaped steel frame in fire combined blast loading was numerically developed in this paper using finite element method by ANSYS thermal analysis. At the first step, a temperature field has been numerically analyzed. At the second step, each element of the steel frame was assigned different modulus of elasticity and yield stress based on the temperature analysis results. A dynamic simulation of the steel frame subjected to a blast load was analyzed under such a temperature field. The failure modes of the frame structure has been discussed. Finally, a same shape frame at the room temperature under the same blast load was simulated to compare with that at the elevated temperature.
Lime-Crusted Rammed Earth: Materials Study
Authors: Mileto Camilla , Vegas Fernando , Javier Alejandre Francisco , Martín Juan Jesús , García Soriano Lidia
Published: December 2013

This study analyses the durability of rammed-earth wall construction techniques. The analysis focuses on three medieval masonry types from the Castle of Villavieja (Castellón, Spain) using two variations of lime-reinforced rammed earth in its walls: lime-crusted rammed earth and brick-reinforced rammed earth. Materials analysis reveals the good properties of the materials used in the outer wall facing despite its age. It also clearly shows how deterioration depends more on the construction technique (construction of the wall with a base, cornice, facings, core; on-site installation, bonds, etc.) than on the material itself. These two types of lime-reinforced rammed earth (lime-crusted rammed earth and brick-reinforced rammed earth) are the most common kinds of fortified architecture in the Iberian Peninsula as well as in northern Africa and the Middle East. The case presented herein is therefore highly relevant as it advances our knowledge of the behaviour of the materials comprising these walls and lays the foundations for suitable future conservation works of a vast array of architectural heritage.
Mitigation of Vertical and Horizontal Seismic Excitations on Bridges Utilizing Shape Memory Alloy System
Authors: Aryan H. , Ghassemieh M.
Published: December 2013

Vertical seismic excitation has a tremendous effect on bridges and many researchers have pointed out bridges damages occurred during the past significant earthquakes which were direct results of ignoring vertical acceleration of ground motions. Many studies have emphasized the importance of extending practical methods to reduce effects of vertical acceleration of earthquakes besides effects of horizontal accelerations; but no practical method has proposed up to now. In this article, an innovative shape memory alloy system is proposed for bridges that can simultaneously controls effects of vertical and horizontal seismic excitations on bridge and reduce them. To evaluate the effectiveness of the shape memory alloy system, a nonlinear time history analysis is conducted on a detailed three-dimensional model of a multi-span simply supported bridge using a representative ground motion. The results show that the proposed new system is very effective for reducing effects of vertical and horizontal seismic excitations on bridges.
Investigation into Central-Difference and Newmark’s Beta Methods in Measuring Dynamic Responses
Authors: Mohammadzadeh Behzad , Noh Hyuk Chun
Published: December 2013

Studies in the structural systems include two main approaches, design and analysis, which require response evaluation of structures to the external loads including live and dead loads. Structures behave statically and dynamically for static and dynamic loads, respectively. One of the most important dynamic loads acting on a structure is earthquake force. In order to find responses of structures subjected to earthquake, several schemes of direct integration can be used. This study deals with two methods of calculating dynamic responses of a single-degree of freedom oscillator, i.e., central difference method (CDM) and Newmarks beta method (NBM), using recorded ground acceleration for 60seconds. The maximum relative acceleration is obtained to determine maximum relative displacement by which estimation of quality and quantity of failure occurred to a structure for a given earthquake is provided. Firstly both CDM and NBM are discussed. Second, for a specific damping ratio dynamic responses are evaluated for periods of range in between 0.1sec to 1.5sec to evaluate the effects of period on responses of system. Third, the effects of damping on dynamic responses of SDOF system are evaluated by considering different damping coefficients from ζ=0 to 0.5. The results are compared and discussed to investigate the range of periods and damping factors where methods can provide a better estimation of responses.
Monetary Policy's Influence on Real Estate Price in China: An Analysis Based on VAR Model
Authors: He Xiong Song , Deng Guo Lin
Published: December 2013

Monetary policy has a significant effect on real estate price, and monetary policymakers need to have quick response. Based on the assumptions that monetary policy and real estate price influence each other and variables affect one another with a lag, A VAR model is designed and modified. Through impulse-response analysis and variance analysis, the influence of money supply and that of interest rate on real estate price are tested and compared. We found that: both money supply and interest rate could affect the real estate price; interest rate has a bigger influence that money supply does; as time goes on, the influence of money supply changes little, but that of interest rate enhances; interest rate policy is not easy to control and it will lead to a fluctuation of economy and the fluctuation may enhance, money supply is a better method to regulate real estate industry instead.
Research on Collaborative Mechanism in Large and Complex Business Process Modeling
Authors: Gao Jun Tao , Chen Wei
Published: December 2013

Large-scale and complicated business process modeling is not supported by traditional single-designer business process modeling tools. This paper investigates a collaborative business process modeling method based on top-down pattern, where the conflict issue in collaboration is explicitly accounted for. An access control mechanism is proposed and four rules of locking up are defined to restrict designers access to models. Then the locks impact on efficiency of collaborative modeling is deeply studied. At last an integrated multi-designer modeling system IPro is developed based on the above collaborative mechanism and applied to several business process modeling projects in aviation industry to validate the mechanism.
The Analysis of the Effectiveness of the Shibor as a Market Benchmark Interest Rate
Authors: Xu Zhi Hua
Published: December 2013

In this paper, we established Granger causality test, VAR model, impulse response function and variance decompositions to observe Shibor whether possess of four properties as the benchmark interest rate of the marketability, stability, correlation ,fundamentality. Conclusion Shibor as money market benchmark interest rates on various aspects of the performance is better, however, compared with Chibor foundational aspects needs to be improved, and easily influenced by Exchange rate suggests that stability is insufficient.
Marketing Decision and Decision Support System Design Based on Web
Authors: Peng Guang Yu
Published: December 2013

This paper analyzes the DSS characteristics about the marketing under the internet as well as the influencing factors of the market decisions, Studying the decision-making functions of marketing decision support system DSS. It proposed the marketing DSS design, logical structure and its implementation based on a data warehouse as the center, online analysis processing and data mining as a means.
Employment Expectation: Factor Influencing Graduate Employment
Authors: Peng Xiao Jian , Zhang Li Na
Published: December 2013

Based on the 2013 session of the graduate survey data of the Economics and Management School of Nanchang University, this paper uses Logistic model to analyze the impact of employment expectation on undergraduate students. Evidence indicates that the employment expectation has a significant negative impact on the employment of university students, the higher the expectation of employment, the less satisfactory employment situation is. And the cognition factor plays a key role for the employment of university students, including the cognition on major, the competence cognition and the cognition on the employment situation.
Research on Green Marketing Strategy in Enterprises Based on Low Carbon (LC) Environment
Authors: Zhao Tao , Cui Ri Hao
Published: December 2013

The ecological environment of this planet-Earth has been damaged by industrial
pollution. In the Copenhagen General Assembly of 2009, it has become the focus issue
attracting the attention from various countries in the world how to reduce carbon emission. As one of economic powers, China yet becomes a large environmental polluter. According
to the calculation of World Bank, during two decades from 1980 to 2000, China has
generated 14% contribution rate to the world GDP in terms of its economic growth.
However, China also pays a high price in resource consumption, high energy consumption
and environmental destruction for this. As is pointed in Environmental Green Book of 2007,there were about 75% of waters in Chinese lakes suffering significant pollution and
the contamination rate of urban waters reached as high as over 90%, hence causing more
than 300 cities in China suffer water shortage. At present, China has become the
second largest emitter of greenhouse gases in the globe and the loss that environmental
pollution engenders to national economy holds about 10% in GDP. And the area of
cultivated land in China also decreases at the speed of about 1.6 million hectares per year, hence with severe land degradation and water and soil erosion phenomena. According to
another statistic report, Chinese GDP in 2004 held appropriately 4% in the globe but the
consumed primary energy took up almost 12 percent of the globe, with fresh water
holding 15 percent, aluminum oxide 25 percent, rolled steel 28 percent and cement
50%. In a word, the extensive economic growth pattern/mode has forced China to face
serious resource and energy crises. Due to a series of negative effects brought about by
environmental pollution and various inconveniences caused to life, consumers are also
motivated to pay more and more attention to the environmental problems engendered by
random disposability after products are used. As a result, the design and production of
green products and energy conservation in production process become particularly important,and various green products has become more and more common in market, making green
energy conservation and environmental protection have become the starting point for people
to go shopping.
Efficient Allocation and Reasonable Transportation of Logistics Enterprises under Low Carbon Economy
Authors: Zhao Chuan , Liu Yang
Published: December 2013

On analyzing the SF EXPRESS carbon emission way, the total carbon discharge and the emission reduction way on the low carbon economy development model, this paper finds the logistics enterprises a development model and points out its direction with a sort of technical methods such as technical and economic analysis and statistical analysis etc. It significantly contributes to the similar enterprises on the low carbon economy development with reference. Besides, on the detection of carbon discharge way and the evaluation of the emission, the paper proposes the development of LEC based on enterprise resources integration and rational transport. Through the optimization of the aviation and the terminal branches, the enterprises can get more economic benefits.
Analysis of Transmission Line Engineering Construction Stage Cost Management Problems
Authors: Shao Yong Gang , Xu Jing Zhe , Xia Zhong Yuan
Published: December 2013

In recent years, the rapid development of the national economy has brought rapid growth in electricity demand; the power grid construction has entered a period of rapid development. Construction of power transmission line project is an important part of power grid construction，the cost management of construction stage, it is of great significance for the entire project cost management, improve the efficiency of construction enterprises. In this paper, based on the theory of cost management in construction stage, from the three aspects of social and economic factors, human factors and natural factors, analyzed the current situation and problems of transmission line engineering construction cost management and to the actual engineering data are discussed. Finally, in view of the present situation and problems of the construction cost management, this paper puts forward some suggestions.
A Study of Transformation Technology Program of Heat Supply Automation in a District
Authors: Qi Tao , Wang Bo
Published: December 2013

In view of the current status of manual adjustment-dominated heating network adjustment, time-consuming information feedback and network balance, failure of network balance to achieve the best condition, and uneven heat and cold in a district, heat supply automation transformation technology program in this district is proposed to improve the efficiency of heating network and achieve the goal of energy conservation and emission reduction.
Comparison between the Expert Systems of SAR and BOLL
Authors: Huang Hai Ping , Huang Xiao Ming , Wang Pin
Published: December 2013

This paper presents tests and comparisons between SAR and BOLL, tow security transaction expert systems, through statistical experiments, with the wining rate, annual rate of return and net profit rate as the management objectives, on basis of the mass data generated by the security market; the results suggest a ratio among the wining rate, annual return rate and net profit rate of the two as 0.876, 0.936 and 0.936 respectively, and the yearly numbers of transactions of SAR is 3.7 times more than that of BOLL. The lower rate of SAR is, as believed, a result of the higher transaction cost of it comparing with BOLL.
Research of Accelerated Corrosion Test Method of 7A04 Aluminium Alloy in Xisha Atmospheric Environment
Authors: Xing Shi Bo , Li Li , Wang Xiang Min
Published: December 2013

The marine atmospheric environment spectrum of Xisha was compiled by using the environmental data of Xisha atmosphere test station. The determination method of the parameters of every process and the equivalent relationship between the accelerated spectrum and the actual use environment were presented by the equivalent conversion method. The accelerated corrosion test methods were composed of ultraviolet radiation and periodic soakage, and carried out verification tests of indoor and outdoor corrosion. The accelerated corrosion test methods provide a reference for the study on corrosion behavior of 7A04 aluminum alloy in the typical oceanic and atmospheric environment of Xisha.
Fast Hydrolysis of Antler Residue by PEF Assisted Pepsin
Authors: Jiang Wei , Yin Yong Guang
Published: December 2013

Under optimized pulsed electric field (PEF) treatment for production of antlers calcium citrate malate and antlers collagen polypeptideby one-factor test were studied. The yield of dissoluble calcium (YDC) and protein degree of hydrolysis (DH) were used as characteristic indexes, the tests were carried out using different factors, which is as follows: the molar ratio of citric acid to malic acid (2:1-1:2), mixed acid content (0.1-1.0 mol/L), E/S (1-6 %), electric field intensity (5-30 kV/cm) and pulse number (2-12) were studied. The results indicated that the optimum conditions were E/S 4.0%, acid concentration 0.5 mol/L, electric field intensity 20 kV/cm, pulse number 8, the DH of 19.3±0.34 % and the YDC of 26±0.45 % were obtained.
Optimized Hydrolysis of Antler Residue
Authors: Jiang Wei , Yin Yong Guang
Published: December 2013

Mixed acid content, electric field intensity and pulse number were optimized by response surface methodology (RSM) for protein degree of hydrolysis (DH). The results indicated that the optimum conditions were E/S 4.0%, acid concentration 0.586 mol/L, electric field intensity 19kV/cm, pulse number 8, the DH of 19.3±0.34 % were obtained. In the present study, it is feasible to utilization of antler residue in a novel nutraceutical material with a high solubility for calcium and an easy absorption for collagen peptide to people who acalcerosis.
Determination of Ferulic Acid in“SHI-QUAN-DA-BU” Pills by High Performance Capillary Electrophoresis
Authors: Liu Hai Xing , Liu Qing , Xu Xiao Yang , Feng Guo Dong , Wang Lin Tong , Ye Kai Qi , Yue Hui Juan
Published: December 2013

High performance capillary electrophoresis (HPCE) was used in this text to determine the content of ferulic acid in “SHI-QUAN-DA-BU” Pills. Electrophoretic separation conditions: Uncoated fused silica capillary column(75um×49/58cm), injection height 7.5cm, 30mmol•L-1borax solution, separation voltage 20kV, injection time 15s, detection wavelength 315 nm, experimental temperature 20°C. Linearity was kept in the concentration ranging from 1~31.25 mg·L-1of ferulic acid with correlation coefficient of 0.970. The average recovery was 97.56% and RSD value was 6.4%. The content of ferulic acid was 0.0855 mg/g (n=6).
Flocculating Activity Optimization of Lactobacillus paracasei subsp.paracasei L1 in Corn Liquid
Authors: Li Xiao Na , Li Xin Hua , Zhang Li Li , Mu Jing
Published: December 2013

In order to improve the production process of corn starch and accelerate the separation of corn starch, flocculating activity of lactobacillus paracasei subsp.paracasei L1 isolated from natural fermentation of sweet potato acid liquor in corn liquid was optimized. The main influencing factors were determined by Plackett-Burman experimental design and the flocculating activity was optimized by response surface analysis method. The optimum culture conditions was: inoculum concentration 18%, lactose addition 0.2%, corn steeping time 0h, culture temperature 30°C, initial pH of the culture medium pH 6.5, culture time 36h, yeast extract addition 1%,concentration of corn thick liquid 1:3(w/v).The theoretical value of the flocculating activity was 0.1906 mg/ml and the verified value was 0.1854 mg/ml.
Isolation and Identification of a Campylobacter fetus subspecies Separated from Blood of a Colon Cancer Patient
Authors: Li Chun Hui , Sun Ke Xin
Published: December 2013

To isolate and identify the species of a strain separated from blood of a colon cancer patient.The morphological,cultural and biochemistry characters of the bacteria were studied by routine detecting method. The bacteria genomic DNA was extracted based on alkaline lysis. 16S rDNA sequence was amplified, purified and sequenced. Multiple alignment, phylogenetic analysis were carried out by Clustal W and MEGE 4.1 program. The subspecies was identified by mean of amplification of a subspecies-specific amplicon.The morphological, cultural and biochemistry characters of the isolate, Jiaohe strain, correspond to the character of Campylobacter fetus. 16S rDNA sequence and phylogenetic analysis both confirmed the result. Depending on the result of the subspecies-specific PCR test, the isolate could be identified as C. fetus subsp. fetus.The data showed that a C. fetus subsp. fetus strain was isolated from a patient with colon cancer, which extend the clinical case of C. fetus bloodstream infections. For the morphological and cultural characters were slightly different from the type strain of C. fetus subspecies, further investigation on this organism should be proceeded.
Biomechanical Comparison of One-and Two-Level Cervical Arthroplasty Versus Fusion
Authors: Pu Ting , Liu Wei Qiang , Liao Zhen Hua , Lv Cong Wei , Gu Hong Sheng
Published: December 2013

PurposeTo analyze the biomechanics of cervical spine after one-and two-level Total Disc Replacement (TDR) and two-level Anterior Cervical Discectomy and Fusion (ACDF).MethodsSeven adult human cadaveric cervical spines were biomechanically evaluated under eccentric displacement control in six mechanical modes, including flexion (Flex), extension (Ext), left bending (LB), right rending (RB), left rotation (LR) and right rotation (RR).ResultsIn fusion-treated specimens, range of motion (ROM) at instrumented level decreased as much as 81.78%, and other levels also demonstrated big difference in ROM. In arthroplasty-treated specimens, ROM showed little difference from that of the intact state. Large motion variation happened in LB, RB and Ext after both fusion and nonfusion surgical treatments.ConclusionsTDR had a more reasonable motion sharing than ACDF, especially in Flex, Ext, LR and RR. No evident influence of motion change was observed after adding an extra level of TDR.
Expression of Costimulatory Molecules B7-H4 in PBC Patients
Authors: Zhao Chen , Zhao Yang , Li Yong Zhe , Hu Chao Jun , Liu Ding Hua
Published: December 2013

Objective：To study the relationship between the levels of B7-H4 and PBC. Methods：Real-time quantitative PCR were used to detect the levels of B7-H4 mRNA on PBMCs. ELISA were used to detect the serum levels of IL-2. FACs were used to detect the CD4+and CD8+ T-lymphocytes frequencies. Results：Levels of B7-H4 mRNA and B7-H4 frequencies were significantly lower than non-PBC hepatic cirrhosis group and healthy controls (P<0.01). After PHA treated for 72h the frequencies of CD4+, CD8+, and CD4+CD8+ T-lymphocytes were all decreased (P<0.05). The same with serum levels of IL-2 (P<0.05). And the frequencies of CD4+ and CD4+CD8+ T-lymphocytes and serum levels of IL-2 were significantly higher in the PBC group than that of non-PBC hepatic cirrhosis group and healthy controls (P<0. 01). Conclusion：Levels of B7-H4 decreased in PBC and could play an important role in immunoregulation of PBC.
A Theoretical Model on Blast Lung Injury from an Explosion
Authors: Fan Jun Qi , Yang Jun Xia , Kong Fu Li , Huang Kui
Published: December 2013

About the prediction of the biological damage effects on the lung of human under explosion wave, there are three different criterions, including excessive pressure-impulse criterion, kinematic velocity criterion and specific energy criterion. In the paper, based on the established three criterions and the practical anatomical structure of lung , a new theoretical model on blast lung injury from an explosion is developed. In the present model, the problem of blast lung injury is simplified as the one-dimensional propagation of stress wave in metal foam. Results show that the failure stress of the lung is 0.036~0.072 MPa, and the three criterions can convert to each other.
Analysis of Genetic Diversity and Population Structure Using SSR Markers in Tobacco
Authors: Xia Yan Shi , Guo Pei Guo , Li Rong Hua , Lü Yong Hua , Qiu Miao Wen , Zhao Wai Cai , Carfi Leonardo , He Qi Fang , Yu Yi Wen
Published: December 2013

Genetic diversity analysis and population structure can estimate genetic variation of diverse materials, and can be used in germplasm management and varietal protection. In this study, the genetic diversity and population structure for tobacco germplasm (78 cultivated tobacco accessions in China) were analyzed by using 28 SSR markers. A total of 127 alleles were detected with an average of 4.5 per locus in 78 accessions, while PIC values ranged from 0.19 to 0.89 with an average of 0.63 per marker. Based on genetic similarity, most of sun-cured and flue-cured tobacco accessions were clustered into group A and group B, respectively. A model-based structure analysis for these accessions detected two subpopulations, which were generally coincident with the clustering analysis and showed the genetic similarities were relative high for these accessions. These results revealed narrow genetic diversity for the tobacco germplasm in China.
Shubiling Nasal Spray Effects on Allergic Rhinitis Models of Rats
Authors: Miao Ming San , Wei Zhen Zhen , Yang Bao Xin
Published: December 2013

By studying the effects of Shubiling Nasal Spray on allergic rhinitis models of rats, we found that Shubiling Nasal Spray can alleviate significantly allergic rhinitis symptoms such as sneezing, itchy nose and runny nose, reduce significantly the number of eosinophils in nasal secretions, decrease significantly the levels of IL - 4 and IgE in serum , increase markedly levels of IFN γ in serum, the pathological changes of the nasal mucosa were improved significantly.
Research and Application of Gene Amplification System Based on QT
Authors: Wang Jin He , Liu Jun , Wang Bin , Zhang Nan , Gong Yu Xi
Published: December 2013

Embedded GUI recently has been highlighted in the design of embedded products with the widespread use of embedded system for implementing the human-computer interaction function. A gene amplification system based on ARM embedded Linux OS is introduced. Combined with the requirement of PCR gene amplification system, this article using Samsung's S3C6410 core processor, the choice of Linux + Qt software scheme, built the hardware and software development environment and realized most functions of the gene amplification system GUI based on Qt integrated development environment, such as the real-time temperature curve display, the parameter settings of circulating process and other auxiliary functions showed on LCD. The results demonstrate that the system can reliably and stably run on the Linux system, support for touch screen driver interface for easy operation, excellent scalability, superior performance, beautiful interface, and basically meet the functional requirements of each module.
A Novel Electrochemical Sensor for the Analysis of Salbutamol in Pork Samples by Using NiFe2O4 Nanoparticles Modified Glassy Carbon Electrode
Authors: Luo Su Xing , Wu Yuan Hui , Gou Hua , Liu Yan
Published: December 2013

In this work, a simple and sensitive electrochemical method sensor was developed to determine salbutamol based on magnetic NiFe2O4nanoparticles modified glassy carbon electrode. It was found the anodic peak current of salbutamol was linear with the concentration of salbutamol from 2.0 μM to 60 μM with a detection limit of 1.0 μM (S/N=3). The developed method was successfully applied to determine salbutamol content in pork samples with satisfactory results.
QSAR Study of the Anti-Cancer Activity of 38 Compounds in Different Cancer Cell Lines Based on Gene Expression Programming
Authors: Han Xiu Rui , Li Xian Chao , Si Hong Zong , Ge Cui Zhu , Gao Hua , Zhai Hong Lin
Published: December 2013

Using the GEP,the QSAR model for anti-cancer activity of 38 compounds in 5 cancer cell lines was establish. These compounds are a novel class of anticarcinogen named tricyclic 5:7:5-fused diimidazo [4, 5-d:4, 5-f ][1, diazepines. The carcinoma cell lines involved in this research are A549 lung cancer, MCF-7 breast cancer, MDA-MB-231 breast cancer, OVCAR-3 ovarian cancer and PC-3 prostate cancer. Accuracies of these models in training group and test group are over 90%, showing perfect predictive ability. This QSAR model will be great valuable in providing guidance for future designing and synthesizing of anticancer drugs.
Simulation and Experiment of Mechanical Properties of Potato Compression
Authors: Sun Wei , Wu Jian Ming , Shi Lin Rong , Wang Di , Zhao Wu Yun , Zhang Jun Lian
Published: December 2013

Potato sizes of the longshu 3, new daping and zhuangshu 3 proceed statistics, the typical value of potato size statistics is got. Application of section modeling technology gets the potato contour data, then the data imports into Solidworks software and generates Potato solid model, application of ANSYS/Ls-dyna software to carry on the research of potato with a certain rate in X, Y, Z three directions of loading stress. The results show that Potato X finite element model to compression stress was 1.27MPa, Y to the maximum stress is 5.84MPa; Z to the maximum stress is 3.9MPa. The tuber compression test finds that the 35mm/min rate in three different loading directions on potato compression force-time curves are different, Y curve is higher than that of X and Z direction, Z curve is higher than the Z, the rupture force Z is more than X and Y direction, X is higher than Y direction, the simulation curves are basically identical to experimental curves.
Preparation and Properties of Tourmaline/Chitosan Composite Powder
Authors: Li Jun Feng , Zhong Liang Zhao , Chao Wen Qiang , Zhang Yin , Xiao Jian Gang , Zhang Pei Cong , Lai Xue Fei
Published: December 2013

Chitosan has good biocompatibility and physiological activity, tourmaline possesses characteristics of generation of anion, reduction of water molecular beam and emission of far infrared radiation, so the two composite materials will hopefully possesses the two excellent properties, thus show good application prospect in the biomedical and cosmetic field. Experiment utilized chitosan as wrapped base material, adopt method of suspension solution compound precipitation to manufacture chitosan/tourmaline compound powder, using XRD, SEM, IR and other means to represent powders prepared, and the experimental results show that the synthetic compound powder with irregular granular, chitosan wrapped tourmaline well, the composite of tourmaline and chitosan is physical composite, with the increment of tourmaline , the degree of crystallization of chitosan in compound powder weaken, the composite powder has good absorptive and preservative liquid ability.
Study on the Economic Carrying Capacity Evaluation of Chinese Coal Resource
Authors: Li Li , Pan Dong Yang
Published: December 2013

By choosing economic carrying capacity of coal resource as an evaluation index and the economic carrying capacity evaluation models, the paper conducts empirical analysis for economic carrying capacity of Chinese coal resources. The results indicate the economic carrying capacity evaluation of coal resource in China is very low and the economic carrying time is a little shorter and China is also in ecological deficit in this period.
Effect of Retrogression and Re-Aging Treatment on the Organization and Properties of Cast Aluminum Alloys
Authors: Huang Xin , Zhang Xiao Yan , Wu Juan Juan , Fan Lei
Published: December 2013

In this paper, Samples are subjected to tensile test, metallographic microscope observation, scanning electron microscopy (SEM) analysis for exploring the effect of different retrogression and re-aging (RRA) treatments on the organization and properties of casting aluminum alloy. Results show that after aging at 170°C for 10h ,then regression at 230°C for 10min ,finally aging at 170°C for 10h, tensile strength of the sample is 430.19MPa, elongation is 6.18%, compared with the sample aged at 170°C for 10h (The tensile strength was 426.78MPa, elongation was 3.68%). It demonstrated that through the RRA process, strength of sample can effectively maintain at a similar high level as the samples processed single-stage aging. Meanwhile, the elongation of the sample increase nearly 67.9%. The microstructure characterizations indicate that RRA treatment induced the formation and growth of rod-like T phase, and the T phase homogeneously dispersed in the matrix of alloy. This process is proposed to be the major reason for the improvement of ductility.
Thermogravimetric Investigation of Calcium Oxalate
Authors: Song Jun , Wang Jian , Wang Li
Published: December 2013

The thermal properties of calcium oxalate were studied by means of TG analyzer. The factors such as heating rate, filling amounts of specimens and filling atmosphere etc., which may affect thermo gravimetric (TG) curves in TG analysis test were investigated. The results showed that, with the improving of heating rate, filling amounts of specimens and close packing, the starting reaction temperature was postponed more obviously and the width of reaction temperature range rises. The flow of the nitrogen gas enhanced heat transmission, caused the starting reaction temperature to shift to the low temperature zone, and it could also affect the response course. But the factors above didnt obviously influence the weightlessness of specimens.
Continuous Carbon Fiber Reinforced Aluminum Matrix Composites - A Review
Authors: Yao Jin Jin , Chu Di , Han Yan Qiu , Ben Li Hua , Wu Chun Jing
Published: December 2013

The physical and mechanical properties that can be obtained with metal matrix composites (MMCs) have made them attractive candidate materials for aerospace, automotive and numerous other applications. In this paper, the current fabrication methods of continuous fiber reinforced aluminum matrix composites are briefly described.