bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors Analysis about the Dam-Break of the Uranium Tailings
Authors: Lv Fang Ke , Liu Yong , Guo Zan
Published: October 2014

The uranium tailings is a typical major hazard sources because of its specificity, which could cause serious casualties, property damage and environment pollution in the event of an accident, and thus calls for the attention of everyone. In this paper, we will connect with the practical situation of the uranium tailings, identifying the factors of the dam, such as stability failure of dam slope, overtopping, structure damage, seepage damage and so on. To analyze the related factors and put forward countermeasures based on the analyzed results to control the harmful factors, this will lay the foundation for improving the safety monitoring and security management of uranium tailings impoundment.
Engineered Wetland for the Treatment of Wastewater from Fertilizer Plant
Authors: Sapari Nasiman , Orji Kalu Uka , Mohamad Hazli Mohd Hafiz B. , Yavari Sara , Olisa Emmanuel , Asadpuor Robabeh
Published: October 2014

This research analyzed the effective performance of a laboratory scale vertical surface flow constructed wetland (VSFCW) system, for the treatment of wastewater from fertilizer plant. Two reactors with a volume of 80 L each were used for the experiments. One of the reactors contains 2 units of floating plants known as water hyacinth (Eichhornia Crassipes) while the other was used as a control. The treatment was carried out in 2 phases: the wetland was first fed with treated domestic wastewater for acclimatization and stability and thereafter, fed continuously with analyzed wastewater samples from the fertilizer plant at the flow rate of 8 L/day, surface loading rate of 0.025 kg/m2/day for COD, 0.013 kg/m2/day for Ammonia, 0.021 kg/m2/day for Nitrate, 0.01 kg/m2/day for Nitrite, and 0.01 kg/m2/day for Phosphorus and a hydraulic detention time of 10 days. The treatment was monitored for 27 days and the performances evaluated. Results of the system indicated that the average removal efficiency was 47 % for COD, 89.01 % for ammonia, 83 % for nitrate, 80 % for nitrite, and 81 % for phosphorus. The quality of the discharged effluent from the VSFCW showed that the system may be a viable technology for the wastewater treatment.
Method of Biological Wastewater Final Treatment Using Bioremediation in Northern Khabarovskiy Krai
Authors: Gula Konstantin , Krupskaya L.T. , Shevkun Eugene , Zvereva Valentina
Published: October 2014

The article presents the results of experimental research for final treatment of gold mining enterprise waste waters using water lentil (Lemna minor) of (Lemna L. ) genus, (Lemnactat S.F. Gray) family, and common red grass (Phrágmites austrális (Cav.) Trin. Ex Steud.). It was shown that a level of heavy metals extraction, cyanides and rhodanides from the industrial waters of gold processing plant is greatly higher in comparison with chemical method used at the plant. The proposals are given to the gold mining enterprise to establish a pilot plant for final biological treatment, its novelty is confirmed by the Patent of Russian Federation of 20.01.2014.
Research on Multi-Rate Pyrolysis Kitchen Waste
Authors: Qian Peng , Wang Hua Lin , Wang Jian Gang
Published: October 2014

The pyrolysis characteristics of kitchen waste were studied and the optimal pyrolysis condition was obtained by analyzing the thermogravimetric curves (TG/DTG). Then a pyrolysis experiment was carried out using external heated rotary furnace with the throughput at 5kg/h and the heating rate ranging from 50°C/min to 200°C/min. In this experiment, the 3-phase products were collected separately and the distribution was tested. The composition and thermal value of the products were also analyzed.
Assessment of Technogenic System Impact on the Environment and Technospheric Safety for Mineral Development in Amurskaya Oblast
Authors: Golubev Dmitriy , Krupskaya L.T. , Zvereva Valentina , Filatova Marina
Published: October 2014

The article presents the results of the study to assess the impact of the tehnogenic system on the environment and technospheric protection during mineral resources development in the Amurskaya oblast (region). High ecological toxicity of tailings, contributing to the deterioration of the life environment. According to the authors’ research, here air pollution can be attributed to high level. At all pilot sites MPC level exceeding in soils and vegetation for arsenic, chromium, manganese, copper, zinc, lead, cobalt, antimony was determined. Analyzing total risk indexes for substances effecting the same systems and organs, the highest value was found for the group of substances affecting the human respiratory organs: suspended particles, sulphur dioxide. The measures reducing the impact of mineral processing wastes on the environment and the health of the mining settlements population in Khabarovsky Krai were developed.
The Technical Economy Analysis of Guangxi Rural Contiguous Environmental Governance Project in 2011
Authors: Hu Zhe , Chen Guan Wen , Li Hai Xiang , Han Biao , Huang Fu Ping , Zhang Wei Wei
Published: October 2014

Guangxi rural contiguous environmental governance project was started in April 2011, with 88 sets of sewage treatment facilities, 22 sets of household garbage collection treatment facilities. The finishing of 74 sets of sewage treatment facilities, and 19 sets of life garbage collection treatment facilities revealed that this project start-up was basically normal. According to the situation of the contiguous rural environmental governance project in Lijiang River basin and the Red River Valley, it shows that the scale of rural sewage treatment facilities is generally small—the average scale is 107.2 m3/d, the average price of unit construction investment ( including pipeline construction ) is 6445 Yuan/m3, and the main treatment process is the bio-contact oxidation method + constructed wetland; the average price of unit construction investment on rural garbage disposal is 339.2 thousands of Yuan, garbage collection and clearance are the main processes, meanwhile the urban and rural garbage integration treatment mode — “household classification - village collection - township transfer - county treatment” is only carried out in the regions of nearby towns and convenient transportation.
Design and Implementation of Water Quality On-Line Monitoring System Based on Combination of Multiple Data Transmission
Authors: Yu Jin Dong , Huang He , Chen Guang Rong
Published: October 2014

Water quality on-line monitoring is the necessary means to control water environment pollution and provide effective data for the research of water ecological restoration. Using free wireless communicating module of ZigBee we realized transmitting data from sensors on the river bank to the data storage center. Based on serial ports of micro-controller a protocol converter circuit was designed. With program the Modbus RTU protocol data packet on RS-485 bus was converted into ZigBee communication protocol and then transmitted to the Internet. Supplemented by GSM the reliability of data was enhanced. Water quality online monitoring system based on multiple data communication provides browse of real-time river water quality through the Internet network, which is fast and convenient to be exported for research.
Nitrate Removal from Domestic Wastewater by Using Denitrification Limestone Filter
Authors: binti Hamdan Rafidah , Zulaikha Tengku Nur , Ibrahim Izzati Izwani
Published: October 2014

Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. Excessive concentrations in the water body can cause excessive growth of algae and other plants, leading to accelerate eutrophication of lakes, and occasional depletion of dissolved oxygen. To remove nitrogen conventionally from domestic wastewater requires a high cost technology due to consumption of chemicals, high operational and maintenance cost. Therefore, an alternative low cost treatment technology particularly for nutrient removal including nitrogen removal system has been developed to improve the final effluent quality that is an aerated rock filter system. However, in the previous works in the UK the system was outperformed in removing ammonia nitrogen with limited nitrate removal. Hence, the present study was carried out to investigate the removal of nitrate from domestic wastewater through denitrification process using a lab-scale limestone filter. Domestic wastewater sample used in this study was collected from Taman Bukit Perdana Wastewater Treatment Plant (WWTP), Batu Pahat, Johor owned by IWK. The treatments were run in lab-scale limestone denitrification filter for 10 weeks. Effluent from nitrification filter was passing through the limestone denitrification filter as influent for further treatment. The in fluent and effluent of the filter system have been sampled and analyzed on biweekly basis for selected parameters including pH, alkalinity, temperature, dissolved oxygen, nitrate and ammonia nitrogen to monitor the effectiveness of the filter. Results from this study show that denitrification process has took place even the percentages of nitrate removal were considerably low but it seems promising with some modification of designing the the limestone filter to enhance denitrification process. The highest removal rate was 17.66%. Low removal of nitrate was inhibited within the filter system might be due to the high DO concentration as it was found that the range of DO was 4.75-7.78 mg/L. To permit the denitrification process to take place within the filter system, it is required an anoxic condition in the presence of nitrate with minimum DO concentration. Consequently, some modifications to the filter design will be considered in the future research in order to enhance the removal of nitrate through denitrification process.
Adsorption of Cr (VI) from Aqueous Solution by Purified Attapulgite
Authors: Tao Ling , Song Xiao Wei , Yuan Jian Li , Ren Jun , Zhang Yan Zhuo
Published: October 2014

Adsorption of Cr6+ onto purified attapulgite was investigated with respect to temperature, initial concentration and contact time. The kinetics data related to the adsorption of chromium from aqueous solutions are in good agreement with the pseudo-second order equation in ranges of initial concentration of 20~200 mg/L, and temperature of 298~328K. The thermodynamic experiment results show that the equilibrium adsorption isotherm was closely fitted with the Langmuir model.
A Study on the Evaluation Factors of Environmental Education Strategies for Cultural Heritage and Low Carbon Tourism
Authors: Wu Kuei Yang , Lu Shih Chung , Wu Yen Yu
Published: October 2014

Recently, Taiwan government had tried to promote more new tourism styles for the cultural heritage conservation and sustainable community development, and it also showed the importance of environmental education to transmit the ideas of global warming and other significant environmental issues by using sustainable tourism activities. Therefore, a suitable environmental education strategy was viewed as necessary policy to achieve the goal, so that a complete evaluation model for that was very important to support the related strategies. Therefore, this study tried to introduce a concept of environmental education for low carbon tourism and the cultural heritage conservation by using literature review and Fuzzy Delphi method. It also tried to find the relative importance and weight to know the true key factors for the future evaluation model. The main finding showed that “the Environmental conservation training and interpretation” was the most important factor in this issue. Then, “Low carbon transportation”, “Environmental values and attitude”, “Environmental education course design”, “Energy saving” and “Promotion activities” also played the good roles.
Considerations on Design of Ecological Architecture
Authors: Peng Bo
Published: October 2014

Ecological architecture usually symbolise the sustainability of modern cities. With the improvement of living standard, people have higher requirements for the energy consumption.The sustainable living environment becomes a great research project. This paper introduces the concept and characteristics of ecological architecture, analyses the problems in the development of ecological architecture, presented the basic principles of ecological architecture design and discusses the strategies of ecological architecture design.
Thinking and Discussion on Fire Fighting in High-Rise Buildings
Authors: Xue Ran
Published: October 2014

High-rise buildings have some characteristics such as high altitude, complex structure and various functions. Once in fire, casualties and property loss might be more frequent in high-rise buildings. In order to reduce the fire caused casualties and property losses effectively, the characteristics of high-rise buildings were analyzed and concluded in this paper, and related suppression strategies were also put forward. A few suggestions were given to the study of fire suppression in high-rise buildings in the future in according to the research situation.
Evaluation and Strategy of the Campus-Front Space Present Situation in Urban Primary School
Authors: Mao Bai Tao , Yang Li
Published: October 2014

With the accelerating process of urbanization, the urban transportation has changed a lot. The original way of space organization and traffic management of the campus-front space of elementary schools, which can only guarantee for the purpose of teachers and students coming through, was unable to meet the current requirements. This phenomenon causes the congestion at the school gate to and from school, and brings great security risk. In this paper, we take some urban schools of Wuxi for example, through the investigation of the campus-front space of these schools, to analyze the exist problems of the elementary school campus-front space, and to reveal the causes of the problems, so as to provide a reference for the design of primary school campus-front space.
Architectural Culture Represented by Famous University - Taking the Constructions in the Old Campus of Henan University as the Example
Authors: Huang Jian , Feng Ke , Xue Fei , Guo Juan Li
Published: October 2014

Architecture is not only the material carrier of construction technology, but also the material expression of building culture in each era. The essay explores the way of how the construction, as the material witness, embodies the differences in epoch and culture by analyzing these by time. Furthermore, the paper analyzed different era information expressed by the constructions in different times and draws the conclusion: Protection not only means a formality.
Study on New Technology of Treatment of Capillary Water in Subgrade with Soft Permeable Pipe Filled with Sand
Authors: Song Xiu Guang , Yu Yi Fan , Zhang Hong Bo , Li Hong Chao , Wu Jian Qing , Li Chao
Published: October 2014

The technique took into account the high underground water level silty soil with stronger capillarity, subgrade soil easy water softened in Yellow River flood plain areas. It seriously affected the stability of subgrade. If lay a layer of gravel cushion in the ground, and then buried soft permeable pipes in the lower part of embankment, the permeable pipes filled with sand, the top of pipes sealed with geotextile, it would form the vertical drainage channel for the capillary water. So capillary water would along the vertical drainage channels formed by sand core soft permeable pipe and horizontal drainage channels formed by gravel cushion flowed out of the subgrade. The reliability of the method is verified by seep/w module in GEO-studio. This technique could effectively improve the strength and stability of subgrade, reduce the adverse effects of capillary water on the roadbed.
Life Cycle Cost Aspects of BIPV and Conventional Building Components
Authors: Schuetze Thorsten
Published: October 2014

Building integrated photovoltaic (BIPV) components can replace conventional components for the construction of building skins and they can produce renewable electricity during their lifetime. BIPV components can have therefore lower life cycle costs than conventional building components, which do not generate any gain during their lifecycle. The detailed calculation of economical profitability of BIPV is dependent on multiple factors, such as the specific case and the specific basic conditions. However, exemplary calculations indicate that it is possible to compensate the cumulative costs of BIPV components, at least to a significant degree, if the gain of the renewable electricity production during a BIPV component’s lifetime is considered in the life cycle cost calculations. Accordingly, BIPV systems are in general economically more profitable than ground-mounted PV power plants in open areas.
A Comparison Study on the Greenery Design Policies for Green Building to the Traditional Chinese Fengshui Issues
Authors: Lu Shih Chung , Chen Jwo Hua , Kashitskiy Daniil
Published: October 2014

The greenery policy in the green building design concept is an important topic and it also plays the significant role of natural protection and CO2 reduction to the environment. In Taiwan, the good policy is not yet a popular one, because some special reasons are existed really. Behind this paradox are the traditional concepts of Fengshui to the buildings funders, so that the greenery design comments in the green buildings design index may include some of these traditional concepts. It recommends not just the calculation the reduction of CO2 for each kind of trees. Moreover, the different species selection of garden planting for variant location of building site should also be studied and make some recommends. It can be believed that will improve the acceptation level of green building design to the popular and make the green building design really more reasonable.
Bearing Capacity Analysis of the Slab of Slipways at Marine Engineering Construction Site
Authors: Gong Chen , Meng Xun , Gao Ren Jie , Shan Ji Hua , Li Feng Jian , Sun Long Long
Published: October 2014

With the rapid development of marine exploration, the scale of offshore structures is getting large. It makes the slipways of marine construction site under critical bearing capacity and results in high-risk. Accurate evaluation of load responses of slipways can ensure the safety during construction and launching process and make use of them efficiently. Focusing on the issue, APDL technique is used in this paper to assessing mechanical performance of slab of the heavy slipway with maximum building capacity currently. Unfavorable live load distribution and contact conditions of panels are demonstrated under various serving conditions.
A New Meshless Simulated Method of Chloride Diffusion in Concrete
Authors: Yao Ling , Zhang Ling , Zhang Ling Ling , Zhang Xin Yue , Wang Yong Jing
Published: October 2014

In this paper, θ-EFG(theθfamily of methods –Element Free Galerkin) method is developed and adopted for the simulation of chloride diffusion in concrete. Diffusion of chloride ions is generally assumed to follow the Fick’s second law and its solving process usually adopts finite element and finite difference method. θ-EFG is a meshless method which uses a moving least square approximation in space domain, then uses the θ family of methods in time domain. Some discussions and One dimensional examples are carried out. The computational results compared with the analytical solution are shown that the relative error norm that time=20years, chloride content of different depth and depth =45 mm, chloride content are about 0.5% and 1% respectively.
Flexural Behaviour of Reinforced Concrete Beam with Glass Fiber Reinforced Polymer (GFRP) Bar Strengthened with Carbon Fiber Reinforced Polymer (CFRP) Plate
Authors: Salleh Norhafizah , Mohd.Sam Abdul Rahman , Mohd Yatim Jamaludin , bin Osman Mohd. Firdaus
Published: October 2014

The use of glass-fiber-reinforced polymer (GFRP) bar to replace steel reinforcement in concrete structures is a relatively a new technique. The GFRP bars possess mechanical properties different from steel bars, including high tensile strength combined with low elastic modulus and linear stress–strain relationship up to failure. Therefore, design procedures and process should account for these properties. This paper presents the experimental work on the flexural behavior of concrete beam reinforced with GFRP bars and strengthen with CFRP plate. A total of ten reinforced concrete beams reinforced with either steel and GFRP bars were cast and tested under four point loads. Eight concrete beams (200x250x2800mm) were reinforced with 13mm diameter GFRP bars together with strengthening using CFRP plate and two control beams reinforced with 12mm diameter steel bars were tested. The experimental results show that although the stiffness of the beams reduced but the ultimate load of the GFRP reinforced concrete beam is bigger than steel reinforced beam. It was also found that strengthening using CFRP plate will further enhanced the flexural performance of the beams with GFRP bars.
Changes of Mechanical Properties of Lightweight Cement Mortar Mixed with Recycled Expanded Polystyrene and Subjected to High Temperatures
Authors: Sancho Rocío , Castillo Angel , Maciá-Torregrosa María Eugenia , Corral Rosa
Published: October 2014

The main aim of this paper is to evaluate the influence of the recycled expanded polystyrene as lightweight aggregate on the mechanical properties of lightweight cement mortar when subjected to high temperatures.Various tests have been carried out on different mixtures of mortar. The water/cement mix proportion has always been the same and only the nature of the aggregates has changed, with a partial replacement of the conventional aggregate by recycled ground EPS (EPS-G) with values ranging from 10% to 30%, achieving significant results in relation to exposure to high temperatures. In this research, the samples have been subjected to different temperatures of exposure, in order to analyze the influence of the lightweight recycled arid dosage in the mechanical properties of mortars.The results of this study show the ability of mechanical response at high temperatures with light mortars EPS-G. This study shows how this new mix can be used in different building types, optimizing construction materials and reducing mortars density while transforming a residual product into an active product.
Mechanical Behaviour of Al-Li Alloy Joints by Different Friction Stir Welding Parameters
Authors: Zhang Dan Dan , Qu Wen Qing , Lv Qun Bo , Liu Yang Yang , Li Wei Yan , Chen Xin Wen
Published: October 2014

In this study, the Al-Li alloy plates were friction stir welded (FSW) at different welding parameters, and the effect of welding parameters on the hardness, tensile and fatigue properties of the butted and lapped FSWed joints were investigated. The experimental results showed that the ultimate strength and elongation of butted joints decreased as the heat input increasing, and the maximum ultimate strength of the joints was equivalent to 83% that of the base material. By comparison of the heat inputs during welding process at different parameter combinations, the relationship between the microstructure and mechanical property of FSWed joints was established. For the overlapped welds made in 2mm thick plates of Al-Li-S4 and 2099 alloys, the hooking defect was a typical and inevitable defect appearing on the TMAZ of both advancing and retreating sides, which would adversely damage the mechanical properties of overlapped joints. Furthermore, the length of pin significantly affected the tensile property of overlapped joints, when the length of pin varies from 2.8mm to 2.5mm, the ultimate strength increased 14% to 20%. In addition, the fatigue lifetime of overlapped joints was lower than that of butted joints and base metal.
Preparation of Hydrophilic-Oleophobic Antireflective Coatings with High Transmittance
Authors: Cai Shuang , Zhang Yu Lu , Yan Hong Wei , Lv Hai Bing , Jiang Bo
Published: October 2014

In this study, hydrophilic-oleophobic antireflective coatings with high transmittance were prepared via simplely mixing the base-catalyzed TEOS and acid-catalyzed MTES with different weight ratio. The refractive index of the AR coatings increase continuously from 1.23 to 1.44. When the weight ratio of acid-catalyzed MTES reached 60%, a hydrophilic-oleophobic antireflective coatings with a high transmittance of 99.09% can be obtained. The water contact angle and the oil contact angle of the coating are 113.8o and 74.4o, which can effectively prevent the absorption of water and polar organic molecules from the environment.
A Novel Structural Design of Heat-Dissipation Method for High Brightness LED Lighting with Thermoelectric Chip Module
Authors: Wang Ching Wu , Yeh Ti Chun , Lin Kai Chun , Chen Kuan Hsun , Wang Wei Chih , Lin Po Kai , Chen Chien Hua , Chiu Ta Yu , Wu Chih Wei
Published: October 2014

In various traditional technologies of solving the heat-dissipation problem for LED, all of these methods exhaust the waste heat into the environment and cause the more serious greenhouse effect. In this article, we present a new heat-dissipation method for high brightness 10W LED bulb using a novel structure of thermoelectric chip module. Evidence illustrates that graphite performs both the best heat-absorption material as well as the superior heat-dissipation material for LED thermoelectric chip module. Besides, the double-layered structure with graphite as heat-conduction material of LED thermoelectric module could create the most temperature-difference and thus conduct the highest output power. It implies that double-layered structure of LED thermoelectric chip module with graphite as heat-conduction material is the optimal structure for heat-dissipation of 10W LED bulb.
Simulation Optimization and Experiment of R1234-ze on the Heat Pump Water Heater Storage Tank
Authors: Qu Yan , Wang Fang , Wang Yu , Wang Peng , Li Tang , Meng Zhao Feng
Published: October 2014

Using fluent software simulations to analysis the temperature field and the velocity field of the equal and changing diameter condensing coils at different positions of heat pump water storage tank, and made experiment of R1234-ze on the heat pump water heater storage tank with equal and changing diameter condensing coils ,experimental analysis and simulation results show that changing diameter condensing coils make the tank temperature raise stability, which is beneficial to the stability of the system operation.
Investigation of Wind Turbine Blades with Tubercles
Authors: Leung Kelvin
Published: October 2014

This paper describes the testing of wind turbine blades with tubercles in two different ways: outdoor testing and flow visualization. In the outdoor testing, the tubercle pitch was varied for turbine blade lengths of 30 cm, 40 cm, and 50 cm. The pitch-to-length ratio of approximately 1/10 to 1/16 produced the most power output. In flow visualization, both tubercle pitch and amplitude were varied. Vortices created behind the tubercles were shown to increase lift by minimizing flow separation.
Thermal Behaviors in a Solar Air Heater Channel with Arc-Shaped Baffle Turbulators
Authors: Koolnapadol Narin , Kaewkohkiat Yingyong , Promvonge Pongjet , Eiamsa-ard Smith
Published: October 2014

Influences of arc-shaped baffles turbulators (ASB) on thermal behaviors in a solar air heater channel are studied. In the experiment, the ASB with three pitch ratios (P/e) are placed on the absorber plate (bottom channel wall in this case) to generate stronger turbulence intensity in the channel. The distributions of temperature and local Nusselt number contours in the absorber plate fitted with ASB are observed with thermochromic liquid crystal (TLC) sheet. The results reveal that the heat transfer increases with the decrease in P/e due to longitudinal vortex flow effect. The heat transfer from employing the ASB at P/e = 4.0, 6.0 and 8.0 is higher than the smooth channel around 116%, 120% and 127%, respectively. This indicates that the ASB pitch spacing is optimal at 8 times baffle height in the present work.
Study on Vehicle Velocity Controller for the Energy Regeneration System of the Hydraulic Hybrid Vehicle
Authors: Song Yun Pu , Wang Wu Teng
Published: October 2014

This paper simplifies the energy regeneration-based vehicle velocity system of the hydraulic hybrid bus into a process in which the extension rod of the hydraulic cylinder drives the secondary-element variable delivery pump/motor to change its displacement. This process enables braking of the vehicle and also allows recovery of energy. Based on the mathematical model established for the system, the fuzzy self-adaptive PID controller is designed and the compared with the conventional PID controller with respect to their impact on system performance.
A Method for Design 3 Blade Type and Testing Optimum Cavitation of Tailing Thai Boat
Authors: Noosomton Jaruphant , Charoensuk Jarruwat
Published: October 2014

This paper presents a method for optimized cavitation of 3-blade type ship propeller. Cavitation flow is investigated around ship propellers experimentally. Testing of two different types of new model propellers and local type propellers are performed in this study. A 3-blades, skew angle 20 degree, developed area 50 and 35, so called model A (B3-20-50), and model B (B3-20-35) respectively, and finally a local type propeller popular used among local fisherman are compared. The results are presented in characteristic curves are related pictures. Finally, the results ate discussed, Model A and B is investigated based on existing experimental results. In addition, model C is a comparison validation to non-optimum for used to shallow-fishery and tailing Thai boat. A practical method was achieved by combining a vortex lattice lifting method and lifting surface method. The optimum circulation distribution yielding the maximum lift-to-torque ratio was computed for given thrust and chord lengths along the radius of the propeller by dividing the blade into a number of panels extending from hub to tip. The radial distribution of bound circulation could be computed by a set of vortex elements that have constant strengths. The cavitation phenomenon is appear to monograph of model A and B the better model C (local type), such as, the cavitation prediction on a hydrofoil is carried out in both steady and unsteady states. The results show good agreement in comparison with available experimental data. Furthermore, the propeller cavitation breakdown is well reproduced in the proceeding. The overall values suggest that the present approach is a practicable tool for predicting probable cavitation on propellers during design processes.
Experiments of Electronic Water Cooling System on Different Inlet Type and with/without Vortex Fin inside
Authors: Tsai Feng Chin , Huang Jen Ching
Published: October 2014

This study mainly investigates the influence of electronic water cooling system on high power heat generation device at different cooling water inlets with vortex fins or not, hence, heat dissipation experiments are going to carried out on the conditions of three cooling cases: hollow case I, hollow case II and vortex-fin case. From this experiment, it can be seen that the heat dissipation efficiency of hollow case I is reduced by 10% as compared to that of hollow case II, and the heat dissipation efficiency of vortex-fin case is also reduced by 10% as compared to that of hollow case I, that is, water cooling system with vortex-fin has very excellent effect on heat dissipation.
Mixing Two Fluids of Different Densities in a Solar Storage Tank by Lattice Boltzmann Method
Authors: Su Yan
Published: October 2014

Mixing of two fluids of different densities in a solar storage tank has been simulated by the state of art Lattice Boltzmann Method (LBM). Unlike conventional computational fluid method, there is no need to define an interface shape. In the present simulation with LBM, the interface is determined by the simulation results without any assumption. The present results of mixing of two different fluids can be expanded to multiple components fluids and is expected to provide guidance for chemical fluid mixing in solar storage tanks. Hence to improve the storage capacity and shift the discharge time as demand request.
Evaluation of P-T Limit Curves According to Alternative Fracture Toughness Requirements
Authors: Lee Sin Ae , Lee Sung Jun , Lee Sang Hwan , Chang Yoon Suk
Published: October 2014

During the heat-up and cool-down processes of nuclear power plants, temperature and pressure histories are to be maintained below the P-T limit curve to prevent the non-ductile failure of the RPV(Reactor Pressure Vessel). The ASME Code Sec. XI, App. G describe the detailed procedure for generating the P-T limit curve. The evaluation procedure is containing the evaluation methods of RTNDT using 10CFR50.61. However, recently, Alternative fracture toughness requirements were released 10CFR50.61a. Therefore, in this study, RTNDT of RPV according to the 10CFR50.61a was calculated and used for evaluation of P-T limit curve of a typical RPV under cool-down condition. As a result, it was proven that the P-T curve obtained from 10CFR50.61 is conservative because RTNDT value obtained from the alternative fracture toughness requirements are significantly low.
Functionalization of Starch for Macro-Initiator of Atomic Transfer Radical Polymerization (ATRP)
Authors: Chalid Mochamad , Handayani Aniek S , Budianto Emil
Published: October 2014

Using of petro-polymers such as polymethylmethacrylate, polypropylene and polyethylene in the world has been undergoing a critical problem due to significantly decreasing of petroleoum stock as monomer sources. Therefore reducing of the petro-polymer usage should be performed by using natural resources such as modified starches.This study reported addition of an acyl bromide compound to substitute hydroxyl groups on the starch obtains a macro initiator for graft-copolymerizing polymethylmethacrylate (PMMA) onto the functionalized starch as starch-g-PMMA through atomic transfer radical polymerization (ATRP) method. The starch activation through the substitution of the hydroxyl functional group creates ability of the starch to transfer a radical atom onto a petro-monomer such an alkylmethacrylate which furthermore polymerize into starch-g-PMMA at mild condition. This paper reported study of the starch activation describing about screening catalysts and acyl bromide compounds, optimizing process variables such as amount ratio of a selected acyl bromide compound to starch and temperature. The functionalized starchs were analysed by 13-CNMR, FTIR, titration and their morphology was observed by FE-SEM.
Experimental Investigation on Damping Characteristics in Pump-Sand Box-Isolation System
Authors: Kong Xiang Jun , Chen Chong Zheng
Published: October 2014

Sand is used in the pump-sand box-isolation system, studying the initial displacement, particle size and packing rate how to affect the damping ratio by free vibration experiments. The result shows that the initial displacement of the system has less effect on damping ratio, the particle packing rate is a significant influence factor of damping ratio, selecting the appropriate particle packing rate can get the maximum damping ratio, reducing the particle size can increase the system damping ratio, but the damping ratio no longer obviously changes when the particle size of is less than 1.5mm. In general, the packing rate needs to be controlled at below 70% in metal spring or rubber isolator system. This result can provide the basis for the design of particle damping vibration isolation system.
Design of Intelligent Lighting Control System Based on Power Line Carrier Communication Technology
Authors: Zhang Chen Liang , Wang Wen , Su Xue Jun
Published: October 2014

To implement intelligent lighting, a control system based on power line carrier (PLC) communication was proposed, which has wide application prospects compared with traditional lighting control system for not needing special serial communication line and wireless network. This paper designed a lighting control system with including an upper computer and lower computers, PLC modules, relays and etc. A PC is used as the upper computer which can control lower computers and a friendly interactive interface is designed. The lower computers are designed to control power on or off by relays. By working and testing, the proposed system works stabily and operates conveniently, which can satisfy requests of applications.
Heat Transfer Intensification in Finished Surface Pipes of Small Diameter
Authors: Kubín Milan , Hirš Jiří
Published: October 2014

There are various methods that are used in technical practice to increase the heat transfer intensification. One of the possibilities is the use of pipes with finished surface. The type of selected surface finish of the piping influences the flow of liquids in the piping and therefore also the heat transfers in a considerable way. The issue of the hydraulic diameter of the pipe with finished surface is outlined here. The increase of transferred density of the heat flow in a pipe with finished surface in comparison with a bare pipe of the same diameter is demonstrated by a practical example.
The First Two 4kW VAWT Green Energy Generation in Matsu Areas
Authors: Shyu Lih Shyng , Hsiao Yung Chia
Published: October 2014

Belongs to sub-tropical zone marine climate, the Matsu islands are strongly affected by ocean monsoon and have plentiful wind power with average speed of 4.1-6.3 m/s. According to experiences of vertical-axis wind turbine, MDU has granted the bid of Matsu government’s “Low-Carbon Emission LOHAS (Lifestyles of Health And Sustainability)-type Vacation Islands” project to install two 4kW such generators: all composite patented blades’ design; new design and fabricated generators; remote monitor and merging network. The six-month test after completion of project shows the good efficiency of the whole wind-power generator system, and thus meets the custom’s specifications and also verifies the superiority of our wind turbines.
Parametric Analysis of Geometric Configurations of a Small-Scale Solar Chimney
Authors: Castro Silva Janaína de Oliveira , de Morais Hanriot Sérgio , Maia Cristiana Brasil
Published: October 2014

This paper was dedicated to the study of small-scale solar chimneys by analyzing the influence of geometric parameters on the flow conditions and annual average exergetic efficiency. A mathematical model was developed to estimate the mass flow rate, the outlet and ground temperatures, based on an energy balance and empirical correlations from the literature. The geometry of a prototype built in the city of Belo Horizonte/Brazil was used as standard reference default. The parametric analysis showed that the most important parameters are the diameter of the tower and diameter of the collector and the height of the tower, since they promote larger changes in the airflow conditions and in the annual average exergetic efficiency.
The Applied Research of HACCP Food Safety System in Pork Traceability
Authors: Wang Dan , Li Yu Hui , Li Bo , Xue Xiao Jun
Published: October 2014

HACCP system is one of the world's most popular food safety quality control system. To avoid food poisoning and other food-borne diseases, we must analyse and judge factors causing foodcontamination in the food supply chain, determine the supply chain CCP (critical control points), thereby establish limits and monitoring system for each CCP, correct errors based on the monitoring results, finally, audit system and make operational records. According to China's actual situation and the domestic and international standards, take the production and processing of pork as an example, I analysed the processes and critical control points in the supply chain of pork breeding, slaughtering, transportation and sales.
Study on the Benefits of Energy Saving Reconstruction of Rural Building
Authors: Yang Fu Yun
Published: October 2014

In this paper, by analyzing the present conditions of rural residential, the energy saving reconstruction of rural building walls, windows, roofs and other parts of the measures, both improve the living environment of farmers, but also received a good economic benefits, environmental benefits and social benefits.
Comparative Study of Phenol Adsorption from Aqueous Solution onto Four Kinds of Absorbents
Authors: Dong Wei Fang , Zang Li Hua , Pang Xin
Published: October 2014

The absorbents including MnO2, fly ash, NaY zeolite and activated carbon powder were used to study the adsorption capacity of phenol. The effect of contact time and dosage of absorbents on the removal efficiency were investigated. The experimental results suggested that activated carbon powder is most effective absorbent, following as fly ash, MnO2 and NaY zeolite which the removal efficiency could reached 98.41%,77.65%, 60.19% and 24.13% at 90min respectively. The data indicated that the activated carbon powder was favorable for adsorption while NaY zeolite was unfit for absorbent of phenol from aqueous solution due to lower removal.
Adsorption of Pb2+, Cu2+ and Cr3+ on Yongnian Bentonite
Authors: Ding Shu Li , Hou Dan Dan , Xu Bo Hui , Sun Yu Zhuang
Published: October 2014

The Bentonite from Yongnian is Ca-Bentonite, Montmorillonite Content 52%, Colloidal Value 57ml/15g, Eca2+/CEC 53.60%. the Adsorption Characteristics of Pb2+, Cu2+ and Cr3+ onto Bentonite under Conditions of Constant Temperature and Ph have been Studied. the Results Show that the Adsorption Capacities of Heavy Metal Ions onto Bentonite from Yongnian Follow the Order of Pb2+> Cu2+> Cr3+. it is Found that the Adsorption Process of Bentonite Accords with the Langmuir Isotherm Model. the Maximum Adsorption of 3 Kinds of Metal Ions onto Bentonite is in Order of Cr3+>Cu2+>Pb2+.
Virtual Validation and Verification Method of Brake System Model
Authors: Xu Liang , Guo Rui , Liu Xiao
Published: October 2014

Model validation needs effective and efficient after development of the brake model. For the relatively high cost and limited coverage of test condition of the experimental verification, a virtual test environment of the brake system is established by using the vehicle model and the graphical interface of mature vehicle dynamics simulation software Carsim. Firstly, the brake system model is encapsulated into a dynamic link library. Then the new brake model according to the relationship between input and output of the brake system and vehicle through the S-function is integrated with Carsim vehicle model in Matlab/Simulink, replacing the Carsim brake model. Finally, the mixed model is verified though comparing with Carsim vehicle model in the same operation condition. The simulation results show that the validation and verification method are effective and low cost.
Data Processing in the Indirect Benefits of Logistics Park - Taking Beijing Airport Logistics Park as Example
Authors: Zhang Zhen Yong , Lu Zheng Ye , Ji Shou Wen
Published: October 2014

Firstly, the paper divides the indirect benefits into backward pulling benefits, forward pushing benefits and consumption stimulation benefits based on the upstream and downstream service chain in the logistics park. Then, combined with the actual logistics park, through data processing, the paper gets three calculation models based on the mathematical balance among the input-output table. Finally, the paper taking Beijing Airport Logistics Park for example, using MATLAB software, calculates the indirect benefits by data processing. From the results, the paper gets present existing problems in Beijing Airport Logistics Park and puts forward the improvement suggestions about its later development.
A Localization Algorithm Based on Anchor-Free Wireless Sensor Network
Authors: Liu Chen , Mao Jian Lin , Chi Zi Cheng , Fu Li Xia , Xiang Feng Hong
Published: October 2014

The localization of anchor-free wireless sensor network’s serious cumulative error leads to low positioning accuracy. To solve this problem, this paper proposed a co-located positioning method based on asynchronous change of learning factor adaptive weights particle swarm optimization algorithm (SAAPSO) and Taylor algorithm. The first phase of localization is building relative coordinate system. The second phase is estimating the node’s initial position with SAAPSO algorithm and using Taylor algorithm to iterative calculate in the node’s initial position to obtain accurate result. In the third stage, the node with precise coordinates takes part in the localization of rest nodes. Simulation results show that: this positioning algorithm has smaller cumulative error and higher accuracy.
Study on Dye-Sensitized Solar Cells Based on Graphene / Pt Counter Electrode
Authors: Wang Hong Jie , Jin Li Guo , Wang Shuo , Wang Chao , Liu Tai Yang
Published: October 2014

Graphene/platinum composite gel was prepared with chloroplatinic acid and graphene oxide (GO) as precursors by in-situ reduction method. Grapheme/platinum composite film as counter electrode was prepared on fluorine-doped tin oxide (FTO) glass by electro-hydrodynamic (EHD) method. Battery was assembled with nanoTiO2film as anode, N3 dye, and ionic liquid electrolyte. It was characterized by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and X-ray Diffraction (XRD). Graphene/platinum composite film include very thin graphene layers, with platinum particles of an average dimension dispersed evenly in graphene layers. This device shows similar photoelectric conversion efficiency compared with platinum electrode under 100 mWcm-2(1 sun) AM1.5 illumination.
Corrosion Behavior of Galvanized Steel for Grounding Grids in the Red Clay Soil
Authors: Yan Ai Jun , Shao Yu Pei , Wang Yu Na , Zhao Shu Qi , Liao Qiang Qiang
Published: October 2014

The corrosion behavior of galvanized steel for grounding grids in the red clay soil was studied by electrochemical impedance spectroscopy (EIS) and polarization curve measurement. The results show that the Iron-Aluminitma oxides can promote the galvanized steel corrosion in red solution. The resistance decreased with the increase of immersion time and the latter stage is less than the early stage. The corrosion current density of galvanized steel decreased with the increase of the content of Iron-Aluminitma oxides of soil solution.
Applied Research on New Materials in Product Design
Authors: Yan Ru Shan
Published: October 2014

The emergence and application of new materials have changed the traditional design and selection methods of humans, realizing the innovation of products and having a profound impact on the field of design. This paper analyzes and interprets the current application of new materials from the perspective of the relationship between product design and design materials, proposes application principles of new materials in products design by combining applied features of new materials in products design and exacts and summarizes requirements with practical significance for new materials in products design.
The Adsorption of Zn2+ onto Chitosan-Aluminum Oxide Composite Material
Authors: Ren Xue Jun , Gao Qing Gang , Gao Ming
Published: October 2014

Chitosan-aluminum oxide composite material was synthesized through chemical bonds with chitosan and isopropanol aluminum as raw material, whose structure was characterized by IR, TG. The influence of reaction conditions on adsorption performance were studied, such as temperature, time. Results show that in the composite materials, chemical bonds were existed between aluminum and chitosan, inorganic aluminum oxide evenly dispersed in the surface of chitosan molecular, the thermal stability of the composites is improved significantly. Chitosan-aluminum oxide composite material has good adsorption performance of Zn2+ in solution. The adsorption quantity of Zn2+ increases with the increasing of the adsorption temperature and the adsorption time, and the best adsorption time is 7.0h.