bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermoeconomic Optimization for a Ferroelectric Stirling Refrigeration-Cycle
Authors: Yang Hui Shan , Wu Jin Mei , Wu Li Shuang , Wu Zhi Wei
Published: December 2014

Using the finite-time thermodynamics, an irreversible cycle model of the Stirling refrigeration-cycle, using a ferroelectric material as the working substance, is established. Several irreversibilities due to thermal resistances between the working substance and the heat reservoirs, regenerative losses in two regenerative processes are taken into account. The influence of these irreversible losses on the performance of the ferroelectric Stirling refrigeration-cycleis analyzed. The thermoeconomic optimization for ferroelectric Stirling refrigeration-cycle is reported. The cooling load for the refrigerator per unit total cost is proposed as objective functions for the optimization. The optimum performance parameters which maximize the objective functions are investigated. Since the optimization technique consists of both investment and energy consumption costs, the obtained results are more general and realistic.
Study on Separation/Enrichment of Trace Zinc Using Ternary Association Complex System
Authors: Wen Xin Rong , Tu Chang Qing
Published: December 2014

The paper presents a novel method for the separation/enrichment of trace Zn2+ using NH4SCN –dodecyl dimethyl benzyl ammonium bromide (DDBAB)-water system.The effects of different parameters on the enrichment yield of Zn2+ have been investigated. The possible enrichment mechanism of Zn2+ was discussed.The results show that under the optimum conditions, Zn (SCN)42- produced by Zn2+ and SCN- reacts with DDBAB cation (DDBAB +) to form the water-insoluble ternary association complex of [Zn (SCN)4](DDBAB)2, so Zn2+ was enriched quantitatively.While Al3+,Mn2+,Ni2+ and Pb2+ could not be enriched. Thereby, the quantitative separation of Zn2+ from the above metal ions could be achieved.A new method for the separation/enrichment of trace zinc was established. The proposed method has been successfully applied to the separation/enrichment of trace Zn2+ in the samles of synthetic water, and the enrichment yield is 96.4%-99.5%.
The Mechanism Research of Host Resistance Enhanced by the Composite Mycorrhizal Fungi under Water Stress
Authors: Li Lin , Wang Zhi Yong , Zhou Guo Ying , Liu Xian
Published: December 2014

The mechanism of resistance enhanced by composite endomycorrhizal and ectomycorrhizal fertilizers under stresses had been studied. The results showed that under water stress, the seedling height, ground diameter, aboveground and underground dry weight, relative water content, WUEof WS+F treatment group were higher than that of WS+NF treatment group, to which were respectively higher 55.09%, 59.22%, 29.98%, 75%, 26.49%、142.86%. The RWD, Pro and MDA content of the inoculation of composite mycorrhizal fungi treatment under the stresses were all significantly decreased. In the aspect of antioxidant enzymes activity, SOD, CAT and POD activity of WS+F treatment group increased than that of WS+NF treatment group to 13.45%、59.88%、45.58%. Because of the series responses of Chinese fir seedling inoculated with the composite mycorrhizal fungi, which were benefit for promoting growth, improving water use efficiency, improving the physicochemical character of soil, etc, the resistance of plant had been improved to stress.
Treatment of Chlorobenzene-Contaminated Gas Stream in a Biotrickling Filter Inoculated with Ralstonnia pickettii L2
Authors: Zhou Lan , Su Shi Gang , Zhang Li Li
Published: December 2014

Biotrickling filter (BTF) inoculated with Ralstonniapickettii L2 was established to treat waste gas containing chlorobenzene (CB). Results revealed BTF could achieve more than 80% removal efficiency of CB under the conditions of <0.6 g·m-3inlet concentration and >30 s empty bed residence time (EBRT). The mass ratio of carbon dioxide produced to the mixture of benzene, toluene, and oxylene (BTo-X) removed was approximately 2.10, indicating that 89.5% mineralization of the incoming CB vapor. The degradation of CB in the BTF followed Michaelis-Menten kinetic model, and the maximum specific degradation rate (rmax) was 76.3g·m-3·h-1. AWCD values indicated that the microganisms in the BTF showed the high microbial metabolic activities. Real-time PCR indicated that Ralstoniapickettii L2 could still maintain its stability andactivity in the BTF under different conditions.
Enhanced Activity of Fe-Doped Cu/H-Sep for the SCR of NO with Propylene in the Presence of Oxygen
Authors: Li Yang , Ye Qing , Zhang Zhi Hao , Qi Yun Fang , Liu Li Sha
Published: December 2014

Cu/H-Sep and Cu-Fe/H-Sep samples were prepared by the incipient wetness impregnation method. These catalysts were characterized by means of XRF, XRD, BET, XPS, and H2-TPR techniques, and their catalytic activities were performed by the SCR of NO with propylene. The results show that the Cu-Fe/H-Sep catalyst exhibited the best performance in the C3H6-SCR of NO. After investigation by H2-TPR, XRD and XPS, the result showed that the higher reducibility, more amount of isolated Cu2+, higher dispersion of copper species, and stronger metal-support interaction were responsible for the excellent catalytic activity of Cu-Fe/H-Sep.
Research on the Single Phase Grid-Connected Inverter System of Small Wind Power
Authors: Qu Yong Yin , Li Ze Qing , Shi Li Chun , Zhao Hai Zhou
Published: December 2014

The main circuit structure of single-phase wind power system, grid inverter model with modeling, and the design of the filters are introduced. Comparing two control strateies between several common control strategies with using Matlab/simulation tools. The results show that quasi-PR control has better performance.
Ecotoxicological Assessment of Soils Formed by Weathering of Igneous Rocks of Teschenite-Picrite Association (Beskydy Mountains, Czech Republic)
Authors: Pjurova Barbora , Matysek Dalibor , Drozdova Jarmila , Hrynysinova Eliska
Published: December 2014

Increased concentrations of trace elements in rocks of teschenite-picrite association should also be reflected in the soils developed on these rocks. An addition of biochar to contaminated soils can be effective in decreasing of inorganic contaminants. The threshold of geochemical anomaly for soils overlying the teschenite association and the influence of chromium (Cr) concentration on its mobility after biochar amendment using F. candida as testing organism were determined. The inhibition was not demonstrated in the tested soil with a concentration of Cr at 400 mg Cr/kg. High concentrations of Cr in soils were associated with the presence of chromspinel, which is resistant to the weathering processes. A significant stimulatory effect was found after the addition of biochar made of wood in the sample with 10% of PL (p = 0.0402) amendment and the sample with 5 % of AC (p = 0.0229) amendment.
Research on Vegetation Phenological Change Based upon NDVI in Qinling Area
Authors: Feng Hai Peng , Bai Hong Ying , Ma Xin Ping
Published: December 2014

Currently, NDVI are increasingly used to reflect dynamic changes of vegetation phenology in a wide range. Based on NDVI data in Qinling Area from 1998 to 2009, this paper estimates the start date, end date and time span of the growing season in the study area, using both smooth-moving average method and NDVI mean method. The results show that: (1) NDVI makes good reflection of plant phenology changes in the growing season, also conveys accurately the Growth Recovery Trend and Remote-Sensing Growing Season Elementary Period as an easily accessible parameter. (2) With the arrival of Remote-Sensing Growing Season Elementary Period, NDVI is 0.43. As Sequence Curve reaches the annual peak, when the Phenology ends, NDVI gradually declines to 0.41. (3) When the Active Period of Vegetation Growth advances, end date delays, NDVI in the Active Period has increased.
The Model of the Korla Fragrant Pear Mature Based on Effective Accumulated Temperature
Authors: Lan Hai Peng , Tang Yu Rong , Zhang Jin Zhu , He Yong Mei
Published: December 2014

In order to investigate the mature law of Korla fragrant pear with mathematics method, Korla pears in Aksu area be taken as the study object, and the fruit hardness and soluble solid content (SSC) be selected as the research index. The data of the two indices in the mature process are analyzed with Excel, SigmaPlot and Matlab. To draw the change rule of indices and establish the mathematical mode. The research shows that the effective accumulated temperature reaching up 3000°C to 3843°C is main mature stage of the Korla fragrant pear, and there is an accelerating stage in which. The change rule can be precise description by the established mathematical model that can provide reference for fruit maturity modeling.
Acute Toxicity Experiments on Local Fishes in Liao River of China
Authors: Yuan Hong Hong , Tai Pei Dong , Li Xiao Jun , Yang Xiao Nan
Published: December 2014

Toxic data of local fishes was very essential in the derivation of local water quality criteria. In this study, two local fishes (S.dabryi and P.parva) of Liao River were chosen to conduct 96-h acute toxic data under ammonia (total ammonia) whose pollution was proved to be serious in Liao River. 96 h LC50s of S.dabryi and P.parva under total ammonia were 35.36 mg/L (pH=7.50, T=20.00°C) and 30.35 mg/L (pH=7.50, T=20.00°C), respectively. These toxic values could be used to supply the local database which was the basement to formulate site-specific water quality criteria accordingly in Liao River.
Content of Heal Metals in Incinerated Municipal Solid Waste at Kaohsiung City, Taiwan
Authors: Chang Yu Hsuan , Lu Mei Fang , Lin Jim Jui Min
Published: December 2014

Two samplings of municipal solid waste (MSW) were conducted at four MSW incineration plants at Kaohsiung City. Samplings were conducted in April and July of 2013 at different seasons. Physical composition was analyzed to find out the content of heavy metals in combustible and incombustible MSW. In 2013, the weight percentage for combustible MSW in Kaohsiung area was at 95.59%. It means that combustible MSW in Kaohsiung area is above 90%. Incombustible metals and non-metals have less content in terms of percentage. The possible reason might be valuable metals have been recycled. In 2013, the average content of heavy metals in Kaohsiung area from high to low came in this order: Pb>Zn>Cu>Cr>Cd. The average content of Pb was 155.10 mg/kg. Cd was at minimal level with average content lower than 1.00 mg/kg. The average content of Pb was 147.84 mg/kg. Cd was at minimal level in Kaohsiung area with average content lower than 1.00 mg/kg. MSW amount in Kaohsiung area for the first sampling in April 2013 and the second sampling in July 2013 were respectively at 35491 and 36062 tons. According to this research, the content of heavy metals in MSW was respectively 146.88 and 411.56 mg/kg. The content of heavy metals were calculated at 5.21 and 15.92 tons, which equal to 0.01% and 0.04% of the total amounts of MSW. After incinerating, they contain byproducts of heavy metals such as ashes, smoke emission, and dust.
Study on the Incineration Experiment to Dispose Ptreis vittata L.
Authors: Xu Yong , Wang Xue Feng , Zhou Ting , You Li Juan , Gao Shi , Jia Hao
Published: December 2014

Phytoextraction of heavy metal polluted environment generates large quantities of hyperaccumulators. How to dispose hyperaccumulators safely has been one of the most important issues in the phytoextraction field. In this paper, incineration technology was studied in order to investigate the feasibility of incineration technology on disposal of the arsenic-containing hyperaccumulator Pteris vittata L.. The tube furnace experiment examined the changes of arsenic in Pteris vittata L., studied the effects of factors including temperature, time, percentage of CaO on the incineration state. The results show that the most appropriate incineration condition was temperature of 400°C, time of 30min, percentage of CaO of 10%, which solved the problem to reduce biomass of Pteris vittata L. and volatilization of arsenic. The result provide insight into developing harmless disposal or resource-reuse-oriented methods for disposal of the plants used for large scale phytoremediation application.
Applications of Variable Fuzzy Set Theory and GIS for Water Resources Vulnerability Assessment of Yellow River Delta
Authors: Shi Yu Zhi , Li Fu Lin , Fan Ming Yuan , Liu Hai Jiao , Yang Xiao Feng
Published: December 2014

The Yellow River delta is the Lord area of national high efficient ecological-economic region and Shandong peninsula blue economic region, and it has an important strategic status. This paper integrates variable fuzzy set theory with geographic information technology (GIS) to construct the vulnerability evaluation model of Yellow River delta water resources. First, The study area is partitioned into different evaluation zones (sub-area) based on the spatial recognition technology of GIS; Second, the evaluation index system is formulated in terms of the two aspects of water resources vulnerability, natural and human factors; Finally, city of Dongying is selected as study area, which accounts for 93% of the Yellow River delta, to verify the proposed model. The results indicate that the water resources vulnerability of the Yellow River delta greatly changes in space, the region of coastal, Xiaoqing river and Zhimai river shows high vulnerability, while the region along the Yellow River has low vulnerability. In conclusion, the proposed model can effectively identify water resource vulnerability in space.
Current Status and Development of Chinese Seawater Desalination Technology
Authors: Deng Xiao Mei , Gao Li Zhen
Published: December 2014

Based on the increasingly harsh climate change and water scarcity in China, the seawater desalination is gradually becoming one of the important alternatives to solve the problems of water shortage. This paper makes a comparison among various technologies for seawater desalination and forecasts the development direction and the advanced desalination process merged with other green energy techniques.
Microbial Community Analysis of Underground Drinking Water Using Denaturing Gradient Gel Electrophoresis and Flow Cytometry Technologies
Authors: Liu Jie , Ding Yan Li , Bartlam Mark , Wang Ying Ying
Published: December 2014

Underground water is directly used as drinking water in most rural areas of developing countries due to limitations in infrastructure. As an important indicator of drinking water quality, however, microbial quality has been largely ignored for a long time. Microbial quality poses a great threat to the safety of underground drinking water, especially in rural areas. The current study compared microbial abundance and community structure of three different water sources, i.e. underground water, Poyang Lake and Hai River, combined with flow cytometry (FCM) and denaturing gradient gel electrophoresis (DGGE). FCM results showed that the bacterial concentration of underground water is the lowest (1.037×106cell/ml) of the three water sources, but still approximates that of the Poyang Lake. The removal rate of bacteria after filtration through a 0.45μm-pore-size filter is 98.16% in underground water. The removal rate for Poyang Lake and Hai River is much lower (i.e. 66.57% and 74.17% respectively). DGGE profiles demonstrated that the microbial community structure in underground water shares higher similarity to Poyang Lake (51.0% and 53.1% similarity for bacteria and fungi respectively) than Hai River. The microbial diversity index (i.e. Shannon-Weaver index) for bacteria and fungi are 2.906 and 2.847 respectively in underground water, which is lower than in Poyang Lake. The evenness (i.e. Simpson index) of groundwater was lowest among the three water sources tested. The results suggested that groundwater has a complex microbial community and hence it is critical to apply necessary hygienic barriers to remove microbes for the safety of underground drinking water.
Research on Separating Rubidium from Deep Potassium-Rich Old Brine by Solvent Extraction
Authors: Tan Xiu Min , Zhang Li Zhen , Zhang Xiu Feng
Published: December 2014

A deep potassium-rich old brine in Hubei Province contains a large number of rubidium resource. Separation of rubidium is very difficult due to the similar physical and chemical properties of rubidium with the other coexisting alkali metals (potassium, sodium, and lithium). The process of extracting and separating Rb from the old brine with 4-tert-butyl-2-(α-methylbenzyl) phenol(t-BAMBP) as the extraction agent and sulfonated kerosene as diluents was systematically studied in this paper. The concentration of extraction agent, alkalinity of the old brine, phase ratio, the extracting time and other related factors were investigated. The optimal extraction conditions were obtained as follows: the concentration of t-BAMBP was 1.0mol/L, the concentration OH- was 0.6mol/L, the phase ratio was 3, the extraction time was 3 minutes. The percentage extraction of Rb could reach 91% for single-stage extraction, the separation coefficient of Rb and K reached up to 16.15. Sulfonated kerosene as diluent is non-toxic, high flash point, non-environmental pollution. A high extraction rate and separation factor for the development of rubidium resource of deep potassium-rich brine provided a reliable basis.
Analysis of Characteristic the Heat Transfer on Mine-Used Inverter
Authors: Guo Chun Sheng , Tong Xue Gen , Gao Jun
Published: December 2014

In this research, the traction inverter of coal winning machine installed on the plate that matched with water cooling, each plate cooled two inverters. Also, the inverter controlled by four quadrants. After calculated the conducting losses and the switching losses of the IGBT module, we analyzed the factors affecting the heat dissipation in the finite element analysis software CFX, the factors include the installation position of IGBT module, the thickness of inverter baseplate and different water flow rate. Comparing with the experiment results, verify the validity and practicability of the presented research method of heat dissipation system.
The Simulation Study of Permanent Magnet Synchronous Motor and its Hysteresis Current Control Based on AMESim
Authors: Li Yu Lan , Zhang Tie Zhu , Zhao Hong , Zhang Ji
Published: December 2014

The paper gives a brief introduction of the permanent magnet synchronous motor (PMSM). The author gives the mathematical model under the simplified conditions and the PMSM rotor and stator impedance matrix. Besides, the author used AMESim to build a synchronous motor model on the basic of hysteresis current control strategy and set the parameters. A simulation was carried out and advantages and disadvantages of hysteresis current control strategy were analyzed.
The Change of Energy Consumption in China and its Driving Forces
Authors: Cao Yi , Peng Shui Jun , Zhang Wen Cheng
Published: December 2014

This paper estimates the changes of industrial embodied energy consumption in China between 1997 and 2007, and applies a structural decomposition analysis (SDA), based on non-competitive (import) input-output tables, to analyze the sources of change of China’s energy consumption from 1997 to 2007. Results show that China’s energy consumption increased sharply, especially after the accession to WTO. The SDA results indicate that the improvement of energy efficiency during 1997-2007 significantly reduced energy consumption in China while the growth of final demand was the key driver of China’s energy consumption. In addition, distribution of final demand with the declining share of consumption and the increasing share of export push energy consumption upward.
The Effects of Trade, Domestic Final Demand and Technology on Energy Consumption of China
Authors: Peng Shui Jun , Cao Yi
Published: December 2014

The rapid growth of China’s economy consumed a lot of energy, but excessive energy consumption may constraint the sustainable development of China. This paper constructs a two-tier structural decomposition analysis model to decompose the change of energy use during 1987 and 2010 into 11 factors, and analyze the results of sub-periods. The results show that the scale and products’ structure of domestic final demand, the scale of exports, imports substitution, the structure and the input technology of material promoted the energy in the whole period. However, the intensity of energy, the products structure of exports , the structure and technology change of energy input reduced the energy consumption.
Research on Distribution Transformer Condition Assessment Method Based on Core State Variable Set
Authors: Bao Bing , Bo Li Ming , Xu Yang
Published: December 2014

According to the problems that there are less distribution transformer state variables and the condition assessment of distribution transformer carry out difficultly, a method of distribution transformer condition assessment based on core state variables is presented. The initial results of distribution transformer condition assessment are obtained by using core state variables. Then through calculating the sensitivity of the non-core state variables to the evaluation results, the initial assessment results are modified to ensure more accurate results.
Time-Frequency Analysis Method in the Transient Power Quality Disturbance Analysis Application
Authors: Li Meng Da , Duan Yu Bo , Wang Yan
Published: December 2014

This paper uses the method of S transformation to test the starting time, the end of the time, frequency and amplitude characteristics of common transient power quality signal disturbance. Through error analysis and simulation show that this method can accurately determine the disturbance occurred time and duration, and the identification and determination of disturbance can be simple and intuitive. It has the practical value and realistic significance to power quality signal interference analysis.
An Online Monitoring System Installed to Alarm on Pollution Incidents in Douhe Reservoir in Tangshan, China
Authors: Ren Bai Xiang , Ren Qing , Si Gui Yun , Yin Li , Yang Hai Tang , Ren Zong Ming
Published: December 2014

Douhe Reservoir (DR) is the most important water source for the city of Tangshan, China. In this paper, a new online monitoring and management system is developed for the purposes of water quality management and human health protection. The system includes two parts: an online monitoring system, consisting of a biological early warning system (BEWS) and a physical factor monitoring system (PFMS), and an environmental management system. Once BEWS warns of changes in water quality, PFMS is used to determine whether there has been a water pollution accident. If an accident has occurred, then optimal allocation of source water in DR is initiated on the basis of the results of the online monitoring and management system. Meanwhile, an emergency treatment procedure for accidental pollution of DR, which includes laboratory testing of water quality and the treatment of polluted water, is carried out. Therefore, the online monitoring and management system will provide an effective approach to make water management and human health protection.
Synthesis of a New Monomer: 4,7-bis(5-phenylthiophen-2-yl)benzo[c][1,2,5]selenadiazole
Authors: Hu Tao , Wang Li Ping , Lei Xiao Long , Sun Xiao Xia
Published: December 2014

A donor/acceptor/donor-type benzoselenadiazole-incorporated monomer was synthesized. The procedure described herein offer several advantages, including high product yields, easy purification and large scale production. Optical properties of the resulting compounds were examined by means of UV-vis and fluorescence spectroscopies. The fluorescence spectra exhibit that the emission maxima of material at 419 nm belongs to blue light region.
Application of Comprehensive Geophysical Prospecting Method to Geothermal Resource Exploration in Yiliang County, Kunming
Authors: Ba Jun Jie , Xu Shi Guang , Li Chen Chen
Published: December 2014

The earth is a huge heat reservoir and contains amounts of heat. The geothermal internal heat is about50000 times more than the energy in the oil and gas resources. In order to investigate the occurrence and formation of geothermal resources in Yiliang basin, several methods, such as electrical sounding, Very low frequency electromagnetic method, and Electrostatic α-card method are applied in the exploration area. The geothermal resource survey of the Yiliang basin has been carried out. Based on the above results, two investigation wells have been designed at the location of favorable geological conditions in the exploration area. The application of multiple geophysical prospecting methods obtains preferable effort in geothermal exploration and provides meaningful reference for the area with lower level of the geothermal survey work.
Rashba Spin-Orbit Effect on Traversal Time in Parabolic-Well Magnetic Tunneling Junction
Authors: Huang Zheng
Published: December 2014

Based on the phase time definition,we study theoretically the transmission coefficients and the spin-tunneling time in parabolic-well magnetic tunneling junction with a tunnel barrier in the presence of Rashba spin-orbit interaction. The significant quantum size, quantum coherence, and Rashba spin-orbit interaction are considered simultaneously. It is found that the tunneling time strongly depends on the spin orientation of tunneling electrons. We also find that as the length of the semiconductor increases, the spin tunneling time shows curved increase. It exhibits useful instructions for the design of spin electronic devices.
The Finite Element Analysis of Mining Dump Truck Frame
Authors: Zhang Pei Ming , Zhang Qing Rong , Zhang Wei Chun
Published: December 2014

Mining Dump truck frame is a key part of the vehicle, in this paper the finite element model of the frame was built in UG software, and then the model was imported into ANSYS Workbench. The paper carried on the statics analysis of the frame under the bending and the torsion condition, and carried on modal analysis under a free state. Through the results of analysis, the design requirements such as the stress condition and each order natural frequency of the frame were verified.
Damage Mechanics-Finite Element Full-Couple Method to Predict the Fatigue Life of Metallic Material
Authors: Chen Xian Min , Guan Di , Yang Feng Ping
Published: December 2014

A damage accumulation model is presented for fatigue life prediction of metallic structures. Based on the energy theory and material fatigue test data, the plastic strain threshold for damage initiation was modified for HCF and LCF respectively. The damage evolution parameters were determined according to the fatigue test results of standard specimens. A damage mechanics-finite element full-couple method was adopted to simulate the process of fatigue damage evolution, incorporating elastic modulus reduction due to fatigue damage. Comparisons are made with the fatigue tests of 2A12-T4 open-hole plates and good agreement was obtained.
Synthesis and Photochromism Studies of 1,2-bis[2-methyl-5-(4-bromomethylphenyl)-3-thienyl] Perfluorocyclopentene
Authors: Tang Yong Juan , Xia Shui Jun , Cui Shi Qiang , Pu Shou Zhi
Published: December 2014

A symmetrical photochromic diarylethene was synthesized, and its optoelectronic properties were also investigated. The results showed that this compound exhibited reversible photochromism, changing from colorless to blue after irradiation with UV light in solution. The open-ring isomer of the diarylethene 1o exhibited relatively strong fluorescence at 477 nm in acetonitrile solution (2×10-5 mol L-1) when excited at 325 nm. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light. What is more, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. In addition, the results demonstrated that the diarylethene 1o had remarkable photochromic properties.
Computational Fluid Dynamics and Numerical Acoustic Response for Ship Accommodation Areas due to Propeller Excitation, towards a Human Factors Recommendations
Authors: Abdelkhalek Hany , Han Duan Feng , Gao Liang Tian , Wang Qing
Published: December 2014

In order to achieve the acoustic comfort design for ship accommodation areas, This paper introduces the noise prediction of ship’s superstructure cabins based on boundary element method (BEM). The study investigates the ship acoustic responses due to fluctuating forces induced as a result of interaction between a 4-bladed propeller and Bulk Carrier ship 35,000DWT at full scale. The mathematical models for the ship and the propeller have been built and validated using computational fluid dynamics (CFD), then unsteady simulation done to obtain the transient responses of the propeller excitations. Finally, the acoustic responses of ship super structure under propeller excitations are predicted using BEM in time domain. This work shows a numerical method enable to measure the structural and acoustic responses of the ship at propeller rotating speeds. In addition, at the structural resonating modes of the propeller and the ship. As the propulsion system is the main source of the ship exciting forces thereby nowadays prediction of the ship low frequency noise due to propulsion system becomes important to naval designer for designing a comfort accommodation areas for the crew onboard the ship.
Modeling of Emergency Communication Mission Based on Object-Oriented Petri Net
Authors: Xiao Fei , Han Bing Xia , Li Xiao Peng , Li Xiao
Published: December 2014

Emergency communication refers to the appearance of natural or man-made sudden emergencies, which comprehensively use various communication resources to guarantee the emergency rescue and necessary communication. Emergency communication system requires not only mobile, but also rapid response and wide range. According to these requirements, the paper establishes a process model based on Object-oriented Petri net. The application shows that the model can be used to conveniently describe the dynamic and uncertainty characteristics of emergency communication tasks, which can reduce the complexity of process organization and provide the conditions for fast restructuring and integrating functions of module tasks.
The Specific Implementation Based on Infrared Images in Energy Consumption
Authors: Han Ling Yan , Cheng Guang He , Zheng Xiao Shi , Hao Feng Qi , Zhang Rang Yong
Published: December 2014

This paper describes how to detect energy consumption automatically, especially based on infrared images. We find a method of combining those pictures efficiently. In order to make a direct conclusion, we make a bar of temperature distribution.
A Material Selection Method Based on Double Base Points
Authors: Chao Shi Gang
Published: December 2014

The selection of the most desirable material contains many evaluation attributes, and thus leads to hard be solved. The material selection is actually a multiple attributes decision making problem, which has been studied by many authors. The aim of this study is to propose a new material selection method, which is an improved double base points method through defining the entropy weight and used the relative approach degree to measure the distance measures. The method may avoid the influence of subjective factors through the entropy weight, is very suitable for material selection problem. The applied example proves that the method is both effective and exercisable.
Synthesis and properties of 1-[2,4-dimethyl-5-thiazole]-2-[2-methyl-5-(4-pentylphenyl)-3-thienyl]perfluorocyclopentene
Authors: Zhang Cong Cong , Sun Zhi Yuan , Fan Cong Bin , Pu Shou Zhi
Published: December 2014

A new compound which called 1-[2,4-dimethyl-5-thiazole]-2-[2-methyl-5-(4-pentylphenyl)-3-thienyl] perfluorocyclopentene (1a) was synthesized. As an photochromic diarylethenes, its properties such as photochromism, photochromic reaction kinetics were investigated in detail. The results showed that1ahas shown good photochromic behavior upon alternating irradiation with UV and visible light in both solution and a PMMA film.
Vibromechanic Way to Remove Residual Stresses
Authors: Korolev Andrey Albertovich , Korolev Albert Viktorovich , Fomin Aleksandr Aleksandrovich , Savran Sergey Aleksandrovich , Balaev Andrey Fyodorovich , Yakovishin Aleksandr Sergeevich
Published: December 2014

The article describes the process efficiency of ultrasonic mechanical stabilization of details in comparison with the conventional thermal treatment. It is shown that ultrasonic treatment enhances the productivity and quality of manufactured details. As a result of the proposed stabilizing treatment the relaxation of residual stresses, the required geometry, such as waviness and ovality, as well as necessary mechanical properties are ensured.
High Strength and Ductility in Multi-Directional Forged Wrought Aluminum Alloys
Authors: Pan Li Fei , Chen Lin , Yan Wei Lin
Published: December 2014

A wrought aluminum alloy 3004 was processed by multi-directional forging (MF), natural aging and artificial aging. The samples possess high strength and high ductility after processing. Grain size in samples was reduced evidently. The strength of samples was enhanced by dispersing ultrafine precipitate particles within the grains, reducing grain-size after MF and aging. The ductility was improved due to reducing the forging stress during aging. Moreover, a dispersing ultrafine precipitate particles widespread within the grains after aging, which helps to accumulate dislocations, increase the dislocation storage capability and resist dislocation slip that lead up to increasing work hardening, the ductility was also enhanced. The tensile strength and ductility of the alloy are 422.4 MPa and 11.95%, respectively.
The Abnormal Grain Growth of P/M Nickel-Base Superalloy: Strain Storage and CSL Boundaries
Authors: Fang Shuang , Dong Yun Peng , Wang Shu Yun
Published: December 2014

The Nickel-base superalloy samples were prepared by the isothermal forging in different strain rates at 1070°C. The isothermal deformation tests were carried out at constant strain rate in a vacuum environment using the Thermecmastor (Fuji Electronic Industrial Co., Japan) with a capacity of 30 ton compressive force. All the samples were deformed to a true strain of 1.04 at deformation temperature 1070°C and strain rate 0.001s-1~0.1s-1 respectively. The result is The deformation strain rate determine the position and domain of AGG and the temperature determine the severity of AGG by deformation temperature and temperature rise. The most serious region of AGG is related to the specific CSL boundaries. The fraction of Ʃ3 boundary reaches the peak point value and fraction of Ʃ7 boundary reaches the valley point value in all the samples with different strain rates. The most serious region of AGG is also related to the residual strain. In the most serious region of AGG, more dislocation is used to prefer grain growth to recrystallization, which can refine grain.
Amelioration of Cross-Anisotropy Wu-Bauer Hypoplastic Model Considering Intergranular Strain Tensor
Authors: Xiong Bao Lin , Lu Chun Jiao
Published: December 2014

Wu-Bauer hypoplastic model may simulate cross-anisotropy of sand. The cross-anisotropy of the deposited sand is distinguished with the angle between deposited plane and direction of the principal stress in the Wu-Bauer hypoplastic model. The parameters considering cross-anisotropy in the model are determined by fitting experimental data with optimization. By virtue of intergranular strain tensor, the cross-anisotropy Wu-Bauer hypoplastic model is revised under dynamic load. Finally, the different deposited angle is computed by the revised model. It is shown that the revised Wu-Bauer hypoplastic model can simulate cross-anisotropy of sand and distinguish quantitatively strength and deformation of deposited sand in different loading direction under cyclic load.
Comparison of Results of Analyses the Foundation Slab Calculated by Two FEM Programs
Authors: Čajka Radim , Vaskova Jana
Published: December 2014

For decades attention has been paid to interaction of foundation structures and subsoil and development of interaction models. Currently there are several software that, can deal with the interaction of foundations and subsoil. The purpose of this paper is to compare resulting deformation of the slab, subsidence of the subsoil, bending moments and contact stress calculated by two different software based on FEM calculations. Calculated deformation of the slab is compared with deformation measured during experiment.
Study on the Influence of Shear Connectors on the Shear-Bond Behavior of Profiled Steel Sheeting-Concrete Composite Slabs
Authors: Xu Wei , Xiao Rui Ya , Chang Xiao Bo , Wang Ji Zhong , Li Guo Chang
Published: December 2014

The simulation of Profiled Steel Sheeting-concrete Composite Slabs is based on ABAQUS,the finite element simulation software.The simulation is compared with the test to verify correctness of the finite element simulation method.By changing shear connectors of composite slabs, studies are performed on the influence of shear-bond property ,the behavior of slip between sheeting and concrete,slip distribution along the composite slabs and so on.The results indicate that setting shear connectors ,such as shear reinforcement and studs, can improve ultimate bearing capacity and reduce the slippage between the interface.The studs’ effect is more obvious.Actual engineering should select suitable shear connectors,so that it can meet the strength requirement and be economical.
The Mechanical Properties Numerical Analysis of Steel Plate of Coupling Beam
Authors: Li Bao Lei , Chen Dong , Fan Cheng , Song Li
Published: December 2014

In this paper, on the basis of specimen model size mentioned in steel reinforced concrete coupling beam stress performance research, using the ANSYS finite element software about coupling beam specimens with different steel plates for one-off monotonic loading. Through the comparative analysis of simulation results, to explore the impact of different steel plate forms on shear capacity and ductility of coupling beams, etc .
FE Modeling of EB-FRP Strengthened RC Beams
Authors: Liu Kang
Published: December 2014

A finite element (FE) model for externally bonded FRP (EB-FRP) strengthened RC beams is developed to simulate the responses of the structural system, to gain a better insight into the mechanism of the system. Comparisons between the predictions of the model and test results are presented to demonstrate its capability and accuracy.
Influence of Semi-Rigid Joints on Bearing Capacity of Hold-Welding Beams
Authors: Tang Gan , Zhao Yan Qi , Yin Ling Feng , Pan Chao Hui
Published: December 2014

In the field of modern logistics, assembled steel racks are one of the most widely used structure forms. Hold-welding beams, as the main load-bearing component, were researched in this paper. Firstly, mathematical relationship between semi-rigid joint stiffness K and bearing capacity of hold-welding beams P were derived. Then, hold-welding beams which span were 2300mm, 3000mm, 3300mm and 3600mm were analyzed. When K varies from 0 to 30EI/L, the bearing capacity P was concluded. Finally, the most suitable joint stiffness was concluded respectively in four types of span.
Stairs Effect on Steel Frame Structure under Seismic Loading
Authors: Zeng Zhuo Jun , Wang Jun Ping , Li Yan Xiang
Published: December 2014

This article analysis stairs effect on steel frame structure under seismic loading by using the finite element software MIDAS Gen. Detailed analyzing impact of stairs on the self-vibration period, period ratio, the story drift and other design indexes in designing of the impact under seismic loading. Analysis shows that stairs have great effects on the design index of steel frame structure. Therefore the stair effect must be considered in analysis of structure design and modeling.
The ABAQUS Standard Layer Assembly Modeling Approach of Building Structure
Authors: Wu Dong Yue , Liang Shu Ting , Guo Zheng Xing
Published: December 2014

The mechanics analysis of integral building structure needs the accurate ABAQUS finite element analysis, but due to the ABAQUS function limits the building structure modeling is a great workload and how to model an integral structure more quickly and efficiently become a difficult problem. In order to reduce the workloads in the ABAQUS analysis, the new ABAQUS standard layer assembly modeling approach was proposed. Firstly, according to the data structure of the ABAQUS software’s INP file, the program computational algorithm was proposed. And by a Python self-written program, the example engineering structure model was completed using this standard layer assembly approach. The usage of this new ABAQUS modeling approach makes the modeling more easy and efficient. After that, by comparing the ABAQUS standard layer assembly model calculation results with the results calculated by another finite element software, it is clearly illustrated that the ABAQUS standard layer assembly modeling is more accurate and can be applied in the structure analysis.
The Experimental of Shearing Mechanical Properities on the Connectors of Sandwich Insulation Wallboard
Authors: Meng Xian Hong , Sun Zhen
Published: December 2014

This paper is aimed to research on bending of shearing strength about the three different kinds of GFRP connectors, determining shearing mechanical properties of GFRP connectors, and providing the reference so as to apply in engineering practice as soon as possible. By designing for a total of six groups of three specimens were loaded in accordance with the method of Static Load on my own,then three groups of connectors cracking displacement and ultimate displacement were compared ,so as to arrive three different kinds of shearing mechanical properties of GFRP connectors.According to the test data,these three kinds of connectors cracking displacement and ultimate displacement of V (45°)-type connected specimens are minimum, U-type connected specimens are maximum. Receive the displacement control of V (45°)-type connected specimens of the three works best,shear capacity is relatively good.
Top and Bottom Ring Beam Strengthening Research on Gravity Abutment of Plain Concrete
Authors: Guo Fei , Zhu Hui Fang , Huang Fang Cheng
Published: December 2014

It is major, simple structure and wide scope of use on Gravity abutment of plain concrete, But most of the wall of abutment appears irregular cracks, affect the economy and durability of the abutment and bridge seriously. The paper is based on a bridge of Jiang Xi Rui Xun high-speed engineering, analysis the crack mechanism of abutment by using large-scale finite element software ANSYS to establish reinforcement simulation model of top and bottom ring beam. The stress and vertical deflection of the abutment are meet the requirements, it is meaningful for gravity abutment of plain concrete Strengthening in the future.
Analysis for Collapse Process of Multi-Layer RC Frame Structures under Earthquakes
Authors: Gao Jia Ming , Zhou Chang Quan , Liu Bo Long , Liu Bo Quan
Published: December 2014

Multi-storey RC-frame structure occupies a large proportion of the building structure in our country, the collapse of multi-storey frame structure in great earthquake is very serious, and it has become a major threat to people's life and property security, so research of the rule about structural collapse and define the critical state of structural collapse accurately is necessary. This paper focuses on the rule of structural collapse, takes constant stiffness multi-layer RC-frame structure as the object of study, with height, span and number of floors as the variables, uses nonlinear finite element software ANSYS/LS-DYNA, bases on elastic-plastic time history analysis, studies the rule of plastic deformation’s development of constant stiffness multi-layer RC-frame structure, and the relationship between story-drift and structural collapse.
General Laws of Dynamic Responses of the High Slope Construction under Earthquake
Authors: Li Yong , Jin Ren He
Published: December 2014

Based on stochastic seismic response and time-history seismic response analysis，Dynamic response laws of the high slope constructions by three real seismic waves and a synthetic seismic wave were studied using finite - element method, discussing the differentiation and relation between the high slope constructions and ground constructions. The results show that the dynamic response on high slope constructions are less intensive than ground constructions due to delaying effect of high slope soil acts on the structure, but its internal force stronger than ground constructions as the pile in high slope constructions are anti-sliding and bearing. Results are conducive to the seismic design of high slope constructions.
Numerical Simulation and Analysis of Slope Stability under Load
Authors: Zhang Xiao Xue , Wang Bin Sheng , Lv Zhi Qiang
Published: December 2014

By biaxial test of soil particle flow simulation program, the corresponding relationship between macro and micro parameters were obtained firstly. And then the slope model was established accord with these parameters. With this model, the slope stability under load were analyzed numerically, the influences of applied loading area on slope stability and damages were compared. Results shown that a slip surface came when slope was broken under a few loaded area, which is called the main slip lines. With the movement of the sliding, other landslide cracks began to appear; when subjected to a large load area, the slope undermining the main slip line was not obvious, but there were multiple landslide fissures, along with the movement of soil, the speed of slope failure increased, and severely damaged instantly.
Comprehensive Evaluation on Testing Quality of Cement Mixing Pile of Weak Subgrade by Core Drilling Method
Authors: Hou Yu Bin , Liu Yun , Li Yan Jie
Published: December 2014

Cement mixing pile is widely used in weak subgrade treatment and the quality of it has a direct bearing on the treatment effect of weak subgrade. Core drilling method is an effective method of testing quality of cement mixing pile. However, there are certain deficiencies in quality evaluation method of this kind of piles during practical application. In this paper, auxiliary evaluation criterion, established through standard test pile and combining with subgrade testing engineering is applied to the quality evaluation on test pile with construction deficiency after being combined with existing evaluation system. The result shows that the adoption of evaluation result of improved quality evaluation system can well reflect the pile construction quality of the test pile under complicated soil layer condition and is a reliable method of pile quality evaluation.
Tests and Researches on Post Grouting Cast-in-Place Piles of Power Transmission and Transformation Project
Authors: Chen Pei , Cui Qiang
Published: December 2014

Technology methods of cast-in-place pile post grouting has the advantages of easy operation, good reliability, low cost and bearing capacity growth. In order to study and demonstrate the method on bearing capacity level of cast-in-place pile, a series of tests including of vertical static loading test and horizontal static loading test were used in the job. Some testing results were obtained from the tests.
Intelligent Building
Authors: Volkov Andrey , Chulkov Vitaliy O. , Korotkov Dmitriy
Published: December 2014

The problems of intellectual construction understanding are investigated. Intelligent building is proposed to be considered in the framework of the basic infographic model "man-technology-environment". Three levels life cycle implementation model is provided.