bluuebunny/crossref_metadata_2025 huggingface dataset:
Distribution of Daylight Factor in Classrooms
Authors: Hlásková Michaela
Published: October 2014

The study capability of pupils depends on many factors. One of the factors is the level and the quality of daylighting in classrooms. The daylighting quality is particularly important for very young pupils in primary schools and nurseries. This article deals with natural light in classrooms with different school equipment and furniture and various parameters of window constructions.
Noise Motor Working Tools and their Measures for Noise Reduction during Construction of Buildings
Authors: Řihák Pavel
Published: October 2014

This article seeks to highlight the problem regarding noise emitted by chain saws and then solves the limitation of noise, but also try out the various elements that should prevent the spread of noise from those tools. The issue is solved in terms of the applicable standard requirements. It describes elements that were used as to prevent spreading noise. Finally, results from measurements demonstrate applicability of proposed elements in terms of reduction of sound power level. This article deals with the construction noise and builds on ongoing research in this area. For this research can then make some other experiments, follow up on the results.
Reducing the Negative Effects of City Railways on Houses in Ostrava
Authors: Hudeček Leopold , Svoboda Jiří , Kramný Jan
Published: October 2014

The paper discusses measures to reduce the negative effects of tram traffic on residential house in Ostrava, where the tram line passes through the street area located under the structure of the house see Figure 1.Fig.1HouseNo.1340inOstravaaffectedbyvibrationsfromrailtransportThe lines of urban railways are often kept at densely built-up areas, often in close proximity to the buildings. It is necessary to put a high emphasis on protection against noise and vibration. In case of structures for residential buildings it has a negative effect on residents. An efficient way to reduce the vibration levels of the protected structure and thus the secondary noise is elastic foundation structure as a whole to its support structure. But in practice, we need to solve the problem of the ex post, i.e. when the structure of a residential building already exists.To reduce the transmission of vibrations to the structure was carried out technical measures for vibration attenuation along the route of the spread it is the path from the source to the protected structure. Railway track was imposed on rubber anti-vibration mats under gravel bed of tram line. Furthermore, the test sections were established in order to test the application of different materials used as a grout space between the rails and the surrounding environment and the reference section to compare the resulting data.Subsequently was held the measurement of noise and vibration. Vibrations were measured on the own construction of the house, also on the communication - vertical vibration near the track (30 cm far from the running rail track), these data present the transmission of vibration from the rail and sleepers in the immediate surroundings, measuring the vertical vibrations of the road (150 cm far from the running rail track in place that was not affected by reconstruction), these data present the transmission of vibration to the subsoil neighborhood.
Comparison of Low-Energy Houses Selected Parameters Made by Traditional and Modern Methods of Construction
Authors: Kozlovská Mária , Kyjaková Lenka , Mačková Daniela
Published: October 2014

Currently, in the building industry is emphasizes the sustainability of construction. Sustainable buildings have low costs for energy consumption and operations, they are environmentally friendly, able to save natural resources and they are comfortable and healthy for their users. One of the factors contributing to this requirement is also application of more or less known materials and components through modern methods and technologies. Modern methods of construction (MMC) can be the way, how to achieve buildings, that can minimise the negative impacts of building life cycle on the environment. MMC can, in addition to increasing the efficiency of the construction, ensure the requirements resulting from Agenda 20-20-20 in energy consumption. The paper is focused on the research and comparison of two low-energy houses groups from technical and quality indicators point of view and especially from the perspective of relationship between construction cost and building volume. One of the groups is low-energy houses made ​​of bricks by traditional methods (TM) and the second group representative of modern methods of construction are low-energy houses made of ceramic panels.
Settlement of Crushed Straw
Authors: Teslík Jiří , Labudek Jiri , Valová Barbora , Vodičková Martina
Published: October 2014

This article is focused on an experimental measurement of settlement of blown insulation from crushed straw. Straw has appeared like building material in recent years. It is ecological and cheap building material which is required for sustainable construction. Straw is usually used in form of bales. These are generally used like thermal insulation filling the supporting structure. An alternative to straw bales can be crushed straw. Crushed straw is not used in building industry currently. Its thermal insulating properties and structure are appropriate to use it like blown or loose thermal insulation. The experimental measurement was necessary to verify application of crushed straw by blowing or bulk and to find out values of settlement. Results of this measurement are described in this article.
Hempcrete – An Environmentally Friendly Material?
Authors: Bedlivá Hana , Isaacs Nigel
Published: October 2014

In the last decade, society has been looking at sustainability of construction. The pressure for improved construction methods also leads to the search for new materials. One possible material with suitable technical properties based on renewable resources is hemp fibre concrete – hempcrete.Hempcrete is a construction material made from hemp fibres, lime and water. This composite breathes, as well as having good thermal and acoustic-insulation properties. The paper provides an overview of international literature and its relevance to New Zealand (where hempcrete has already been used) and the Czech Republic (where the first hempcrete house is under construction).A life cycle analysis of hempcrete will be used to examine its ecological footprint, especially in reducing carbon dioxide emissions. The construction in 2014 of a New Zealand house provides data which can be used to model performance in both countries. The preliminary results suggest that hempcrete offers both environmental and construction opportunities which can help to deliver sustainable housing solutions.
The Future of the Polystyrene as Thermal Insulation in Buildings
Authors: Pašek Jan
Published: October 2014

The future of expanded polystyrene (EPS) and extruded polystyrene (XPS) as thermal insulation in the construction industry is divided into two trends. The first one contains polystyrene boards and shaped elements already built-in in the buildings, respectively problems of their liquidation as construction or demolition waste generated during reconstructions and demolition of the buildings. The second trend is focused on the future production of polystyrene foam as the material for thermal insulations. Its target in particular is the change of technological processes and finding new methods to reduce energy consumption during production, improve the thermal insulation properties and replace the existing flame retardant other, environmentally acceptable.
Measurement of Physical Properties in Waste-Based Particle-Reinforced Polymer Composites (WPPC)
Authors: Dostálová Darina , Vacek Michal , Matějka Libor , Pěnčík Jan , Pospíšil Tomáš , Brzoň Roman
Published: October 2014

Recently, a unique Waste-based Particle Polymer Composite (WPPC) made from recycled foam glass and polypropylene has been developed at Brno University of Technology. WPPC was designed so as to provide both good thermal and mechanical properties in order to become a material of choice for thermally insulating construction details. However, before WPPC can be reliably used by construction designers, physical properties of WPPC must be accurately identified. Therefore, we studied thermal, mechanical, and moisture absorptivity of WPPC. In this work, we firstly present material structures of WPPC and difficulties related with experimental determination of WPPC´s physical properties. Secondly, we present measurements of coefficient of thermal conductivity using several experimental methods in order to show discrepancies among those methods. Thirdly, we show and discuss compressive properties of WPPC including Young´s modulus, strength and yield stress and their dependencies on testing temperature. Fourthly, we present measurement of moisture absorption. Finally, we compared experimentally identified physical parameters of WPPC with those of other common construction material in order to clearly show the application potential of WPPC. To sum up, we present an experimental study providing not only valuable data on physical properties of WPPC but also difficulties and discrepancies related to these experiments and we assess the potential of WPPC as a construction material.
Verifying the Soliton Solutions to the Fifth Order KdV Equation by Ordinary Inverse Scattering Method
Authors: Ma Chao , He Jin Chun
Published: October 2014

The Jost solution of the fifth order KdV equation derived from inverse scattering transformation in Gel’fand-Levitan-Marchenko formalism satisfy the both two compatibility equations. Therefore, the soliton solutions to the fifth order KdV equation can be verified theoretically.
SOC Estimation for Li-Ion Battery Using SVM Based on Particle Swarm Optimization
Authors: Guo Gui Fang , Shui Lin , Wu Xiao Lan , Cao Bing Gang
Published: October 2014

State of charge (SOC) is very important parameter for monitoring the battery charge and discharge operation and estimating the drive distance of electric vehicle. Especially, with the cycle number increasing, the precision estimation of SOC for battery management system is still not well resolved. Therefore, in this study, aim at accurate sampling of voltage, current and temperature signals based on LTC6803-3 chip, the paper proposed a support vector machine (SVM) optimized by particle swarm optimization (PSO) to improve SOC estimation accuracy. The results demonstrate that the proposed PSO-SVM model has good forecasting performance.
Investigation on Flexural and Impact Properties of Abaca and Manila Hybrid Composite
Authors: Vijaya Ramnath B. , Manickavasagam V.M. , Elanchezhian C. , Santhosh Shankar A. , Sundarrajan R. , Vickneshwaran S. , Pithchai Pandian S.
Published: October 2014

Bio-fibre composites are increasingly replacing conventional and synthetic composite materials for the past two decades. This is due to their abundant availability, high strength to weight ratio and bio-degradability. Suitable properties of natural fibres can be imparted by changing the orientation of the fibres during manufacturing process. This paper proposes a hybrid property of natural fibre composite made up of Manila and abaca fibres as reinforcing agents with epoxy resin as matrix .Hand lay-up process is used for manufacturing this composite laminate. Then the treated fibres with increased strength are used with epoxy LY556 resin with HY951 hardener under room temperature. Three different samples are prepared and their mechanical properties like impact and flexural strength are found. This hybrid composite is effectively developed for automobile and electrical applications.
Hydrogen Separation Using Silica-Based Composite Membranes
Authors: Kajama Mohammed Nasir , Nwogu Ngozi Claribelle , Gobina Edward
Published: October 2014

Silica sol-gel membranes have been developed for moderate temperature (300 °C) separation of hydrogen (H2) from nitrogen (N2), methane (CH4) and argon (Ar) gas molecules. Tubular ceramic support with 15 nm nominal pore diameter and 45% porosity was modified by dip-coating method. Gas permeation characteristics were evaluated. Defect free silica layer over the substrate for hydrogen gas separation was obtained. Hydrogen gas permeate flux of 4.82x10-1 mol/sec m2 at 1.0 barg feed pressure was obtained. Selectivities of H2 over N2, CH4 and Ar of 3.07, 2.23 and 3.75 at 300 °C, 200 °C and 300 °C and 0.9 barg were obtained with the silica membranes. The gas permeation and the selectivity performance of the membrane were evaluated.
Effect of Al5Ti1B Master Alloy on Microstructure and Mechanical Properties of Al-5wt.%Cu based Alloy
Authors: Xie Ming Yu , Ao Si Hai , Wang Xiang
Published: October 2014

The Al-5wt.%Cu based alloy with different levels of Al5Ti1B master alloy additions have been prepared by conventional casting method. The effect of Al5Ti1B contents on microstructure of Al-Cu based alloy was studied by means of XRD, OM and SEM. The results show that when the addition level of Al5Ti1B master alloy is less than 0.6wt.%, the average grain size of the alloys decreases with the increase of Al5Ti1B content. But the grain size increases somewhat with further addition of Al5Ti1B. It is considered that TiB2 particles can serve as the heterogeneous nucleation sites of α-Al during solidification, and heterogeneous nucleation is the main reason of the grain refinement of Al-Cu based alloy. The superior comprehensive mechanical properties of tensile strength of 435 MPa and elongation of 11% of the refined Al-5wt.%Cu based alloy with 0.6% Al5Ti1B were obtained after solution and aging treatment.
Preparation of α High-Strength Gypsum from FGD Gypsum by Autoclaved Semi-Dry Process
Authors: Li Ying , Duan Peng Xuan , Miao Yuan Chao , Li Qing
Published: October 2014

This paper introduced the characteristics of α high-strength gypsum preparation from FGD gypsum by autoclaved semi-dry process. The compositions of the product in different stages of the reaction and the effects of crystal modifiers on the morphology of the α-HH crystals were examined and compared. The properties of α-HH and the feature of hydration products of α-HH were investigated. The results indicated that the α-HH crystals were well-shaped with the aspect ratio of 1 and the compressive strength of the α-HH could reach or exceed 60MPa. In the new process, the reaction time could be significantly shortened to 2.5hrs, which was much shorter than the conventional process. This process could be widely applied to prepare α high-strength gypsum with phosphogypsum, citric acid gypsum, etc.
The Effect of Deformation on the Carbide Precipitation Morphology in the Ti Microalloyed Steel
Authors: Chen Chih Yuan , Jheng Wern Dare
Published: October 2014

The influence of deformation on the TiC precipitation morphology in the ferrite matrix has been conducted in the present research. When the isothermal holding temperature maintains at lower temperature, the carbide size and the sheet spacing becomes smaller. Therefore the steel with higher hardness can be gained in the low isothermal holding temperature. Moreover the interface precipitation morphology can usually be seen in the high isothermal holding temperature. It is because the slower α/γ interface moving velocity is benefit for nucleating events to occur in the interface. The carbides nucleated at dislocation can act as the dominant strengthening mechanism in the deformed condition.
The Characteristic Analysis of Electroosmotic Micropump with Multistage Nano-Tubes
Authors: Tsai Feng Chin , Huang Jen Ching
Published: October 2014

This study used porous alumina membranes with nanopores as nanopore channels and successfully constructed a single-stage/multistage nanotube electroosmotic micropump. The characteristics of electroosmotic nanotubes pump constructed using porous alumina membranes with varying pore sizes and at different stages were also analyzed. During the experiments, applying a multistage nanotube electroosmotic micropump with the same pore size at the two stages yielded a superior performance curve compared to that of the single-stage nanotube electroosmotic micropump. The flow volume and pressure difference of the pump increased rapidly with the input voltage. Thus, the flow volume of multistage nanotube electroosmotic micropump with the same pore size can be increased more than twice that of single-stage pumps. With a high input voltage, the multistage micropump showed a significant, approximately 4-fold increase.
Phylum-Specific Primer Design and Implication in Quantification of the Microbial Community Structure in GuJingGong Pit Mud
Authors: Luo Xi Mei , Gao Zhi Lei , Zhang Hui Min , Li An Jun , He Hong Kui , Guo Chang Lu , Zhang Zhi Zhou
Published: October 2014

In recent years, despite the significant improvement of sequencing technologies such as the pyrosequencing, rapid evaluation of microbial community structures remains very difficult because of the abundance and complexity of organisms in almost all natural microbial communities. In this paper, a group of phylum-specific primers were elaborately designed based on a single nucleotide discrimination technology to quantify the main microbial community structure from GuJingGong pit mud samples using the real-time quantitative PCR (qPCR). Specific PCR (polymerase chain reaction) primers targeting a particular group would provide promising sensitivity and more in-depth assessment of microbial communities.
The Noise Characteristics Research in Subway Cars
Authors: Tian Jian Hui , Jian Lian , Li Bing
Published: October 2014

The noise of different points in four sections of Shenzhen subway was tested by this paper. Real-time SPL and noise spectrum distribution curves at bogie were given, while the equivalent SPL curve was also shown. The relationship of subway speed and noise SPL was investigated. The regular of noise spectrum characteristics and SPL was obtained. The results show that the noise SPL increases with the increase of the speed. Looking from the frequency range, the frequency corresponding to larger noise SPL amplitude mainly concentrates in the lower frequency while the subway stopping, the frequency corresponding to larger noise SPL amplitude mainly concentrates in high frequency while the subway running.
Examining the Relationship between Natural Gas Consumption and Sustainable Development
Authors: Liu Cheng Kun , Qiao Sen , Guo Yu Qiang , Tu Jun , Chen Hsing Hung
Published: October 2014

Natural gas is one of the cleanest and hydrogen-richest energy among all the hydrocarbon energy sources. This paper expects to examine the causal relationship of economic growth with natural gas consumption, sustainable development, and social development. Natural gas is the most principal urban gas source in China. In addition, shale gas has become a new major alternative resource for satisfying the rapidly increasing demand for energy since 2012. Then, the importance of examining the relationship among economic development, natural gas consumption and environmental performance index is obvious and urgent.
Influence of Sulfur Content in Tailings on Processes of Hypergene and Technogene Mineral Formation on the Example of Kavalerovo Tin-Ore District
Authors: Kostina Alyona , Zvereva Valentina , Pyatakov Anton
Published: October 2014

The paper presents the results of the physicochemical modeling obtained with the use of the “Selektor” program of calculation of chemical equilibriums. We have determined the stability fields of hypergene and technogene minerals crystallized in the mining wastes (tailings) from the highly concentrated pore solutions forming the drainage waters of Kavalerovo district. Our investigations allowed us to obtained new data on the pH range of the hypergene and technogene mineral formation depending of the sulfur amount in the wastes coming with the flotation reagents and sulfides under conditions of the atmosphere influence and without it. This problem for the mining technogene system of the district under consideration is first proposed to be solved with the help of the method of the physicochemical modeling.
Fabrication of Indium-Tin Alloy and Oxide Nanowires Using Extrusion Molding Process in the Air
Authors: Chen Shih Hsun , Hun Chien Wan , Chou Chung Yi , Lin Jin Shyong , Chu Ying Hao
Published: October 2014

A simple method to indium tin alloy and oxide nanowires were achieved by using the extrusion molding process in the air. Eutectic indium tin bulk were firstly injected into AAO templates. After dissolving AAO, the indium tin nanowires were collected in ethanol. Furthermore, in order to have oxide nanowires, alloy nanowires were directly oxidized by heat treatment in the air below its melting point for 24 hours. Finally, crystalline indium-tin oxide and indium oxide nanowires with diameters 90-110 nm and lengths 2-20 μm were obtained.
Analysis about Bending Moment of Sheet Piles Retaining Structure
Authors: Xia Xiong , Li Lin Lin , Huang Yi , Xu Han Dong , Xi Sai Ying
Published: October 2014

With the development of urban construction, lots of deep foundation pits have come forth continuously. As a new support structure for foundation pit, sheet piles is used in-situ due to its rigidity of pile body, but the mechanism of pile-soil interaction of sheet piles is still unclear. In order to study the bending moment behavior of sheet piles under different excavation situations and surcharge loading, the special device was designed and a series of model tests were conducted to investigate the effects of sheet piles retaining structure. The result indicates that sheet piles bending moment increases with excavations and loadings, but decreases after reaching 30 cm. bending moments are different in different positions, the deformation and moment in middle pile is the largest. Pile bending moment increases when piles spacing increases, for attenuating the pile group effect, pile-soil interaction of sheet piles can be used effectively when piles spacing is 5cm, and the supporting effect is ensured.
Self-Insulation Concrete Block Design and Optimized Design Based on Thermal and Mechanical Properties in Severe Cold Zones
Authors: Ding Xiao Yan , Luo Yong Lei , Chen Zhong Fan , Xu Ming
Published: October 2014

This paper designed the self-insulation concrete block meeting the energy-saving standard in northeast severe cold zones and introduced the whole design process of this new self-insulation concrete block. The size of the block is 390mm*280mm*190mm. We designed 15 types of block altogether, used ANSYS finite element software to analyze the combined influence of thermal engineering, mechanics and unit weight, got the best block type Q3 and optimized it twice in mechanical property and thermal performance, made the load-carrying capacity of the self-insulation concrete block tend to be more reasonable, and improved the thermal performance at the same time.
Experimental Study of CFB Modification Fly Ash in Concrete
Authors: Xu Rong Jin , Huo Yan Kai , Teng Bin , Song Si Hai
Published: October 2014

The character of the Fly ash of Circulating Fluidized Bed Boiler (CFB Fly ash) is greatly different from that of Pulverized coal furnace for its high unburned carbon. In order to make effective use of CFB Fly ash in concrete, carbon content was decreased by simulated fluidized bed combustion in laboratory and a series of concerned experiments were carried out on CFB Fly ash. The experimental results indicate that CFB modification Fly ash is possible to be used in concrete to partially replaced cement. It is a valuable reference for CFB Fly ash technical engineers.
Compressive and Flexural Strength of Fine Grained Mortar Containing Rice Husk Ash: A Review
Authors: Jamellodin Zalipah , Hamidah Mohd Saman , Adnan Suraya Hani , Mohammad Noor Shuhada , Wan Yusof Wan Yuslinda
Published: October 2014

Fine Grained Mortar (FGM) offers a new innovative technology binder system to strengthen or repair concrete structures. The innovative technique is achieved by using a small maximum grain size of 1 mm for the mortars. Therefore, less than 2 mm of mortar thickness would be fitted between the strengthened layers. FGM also has high binder contents, by adopting different pozzolanic additives and high performance of plasticizers. Recently, the utilisation of supplementary of cementing materials such as Fly Ash (FA) and Rice Husk Ash (RHA) has a become an important in concrete industry. It has demonstrated significant influence in improving the strength of mortar. Most of the previous studies have focused on the FA to be replaced in the FGM. There is still lacking of research of using other pozzolanas in making FGM. This paper presents an overview on the use of FA and RHA as partial replacement of cement in mortar and FGM as well as future research that will be conducted by the authors.
Disease Analysis on Hydraulic Concrete Structure of Reservoir Works in Jiangxi Province
Authors: Xiao Li Ying , Lan Ying Ying , Zhong Ai Min
Published: October 2014

In recent years, a large proportion of reservoir works in Jiangxi province have emerged different kinds of new diseases, which not only hold back the benefit but also affect the safety of these projects, to some extent. Based on investigating the present situation of dams in Jiangxi province and analyzing the reasons for deterioration condition in reservoir works, the main disease for hydraulic concrete structure of ill-dangerous dams is divided into several typical types and the characteristics of the existing problems are given as well as some control measures.
Assessing Risk Economically on Landslide in Youyu County, Shanxi Province
Authors: Hao Wen Xin , Wang Li Jie , Ding Feng , Guo Jia
Published: October 2014

This paper studies landslide and background in Youyu County, Shanxi Province and provides geological bases for the economic and social development, ecological environment construction and protection. The authors investigated the environmental geological background, collected and arranged the information in this field. By analyzing Landslide-causing factors, the area is divided into four types: high susceptible area, middle susceptible are, low susceptible area, difficult susceptible area. A map of Landslide hazard susceptible degree is made, based on the studies of the quantitative indices (formation lithology, slope structure type, gradient, rainfall, slope height, engineering activities, slope deformation features, death and threatened toll, direct and indirect economic loss and so on.).And the Landslide hazard risk of the area is comprehensively assessed.
Research of Landscape Interactive Design
Authors: Li Jun Feng , Ding Ming Jing
Published: October 2014

Based on the understanding of dual symbiosis of landscape, interactive relationship between people and landscape in landscape environment is analyzed in this paper. In addition, basic ideas and methods of landscape interactive design are discussed. After that, combining with landscape interactive design, some researches and analysis of Flexible Landscape are done.
Gravity-Based Power Generation Apparatus for Emergency
Authors: Wang Hsiu Ping , Wei Ching Long , Liu Fwu Hsing , Lin Wan Yu , Chen Jing Bo , Chen Zh Wei , You Hui Huan
Published: October 2014

A gravity-based power generation apparatus comprises a main body, which comprises a cylinder and coils. When the magnetic ball is affected by gravity, and vertically moves in the cylinder inside, coils generate electrical power by the electromagnetic effect. The power supports to a lighting unit and a USB unit. The apparatus is used as an emergency device, supported a gravity-based flashlight and a mobile USB power. The apparatus is implemented by 3-D printer. The experiment results show idea and apparatus are effective.
Nonlinear Finite Element Static and Corrosion Sensitive Analysis of Radial Steel Gate
Authors: Liu Yue Xin , Guo Hua , Wang Jun Lin , Sun Jian Heng
Published: October 2014

Using nonlinear finite element method, the three dimensional nonlinear analysis of the radial steel gate of a reservoir is carried out. In the analysis, the radial steel gate considering and without considering the stiffeners of the panel is analyzed to investigate the effect of the stiffener to the panel. In the corrosion sensitive analysis, the panel of the gate is divided into three sections, and the nonlinear analysis is carried out for each section that is rusted with different corrosion depth. The corrosion sensitive section and the stress variation with the corrosion depth are present.
A Measurement Based on Tunable Diode Laser Absorption Spectroscopy for Pressure in Gas Flow
Authors: Peng Song Ji , Hong Yan Ji , Wang Guang Yu , Pan Hu
Published: October 2014

Pressure is a very important parameter for combustion diagnostics since pressure is a good indicator of combustion efficiency .As combustion technologies mature, more accurate and less response time pressure diagnosis are needed. Line of sight (LOS) tunable diode laser absorption spectroscopy (TDLAS) provides a fast, nonintrusive, sensitive and reliable solution for quantitative sensing of multiple flow field parameters including gas temperature, components concentration, and mass flux. So far, there is no mature method to measure gas pressure using TDLAS, and it is very important to perfect TDLAS measuring system with the gain of pressure.This paper intends to found a method based on TDLAS for gas pressure measurement. At first, a gas pressure measuring method is presented. Then, an experiment is conducted in a heated static cell to verify this method. A Direct-Absorption-Based Senor which scans H2O transitions near 1.4 μm was used, and this made the measuring system compact, low cost, simple to operate and quick to response. The experiment successfully measured the pressure in several pressure points, and the results agreed well with the data measured by pressure sensor, average difference is 3.1%.
Experimental and Simulation Research on Flow Characteristics of SCR System in a 100MW Power Station
Authors: Li Qian Jun , Zhang Dong Ping , Zhang Fang , Liu Xian Feng
Published: October 2014

This work try to optimize the flow field and concentration field of SCR system. Firstly, the original SCR system is simulated by Fluent and two kinds of guide plates are utilized. The simulation results show that the straight guide plate is slightly better than curve guide plate. The relatively standard deviation of velocity and concentration fields and pressure drop agree with the design rules. To verify the simulation results, a 1:10 scale cold plexiglass test plant is established and this plant is simulated correspondingly. The simulation results are in good agreement with experimental results. So the simulation results of original SCR system are credibly and can guide the practical engineering.
PZT Piezoelectric Energy Harvester Enhancement Using Slotted Aluminium Beam
Authors: Lam Mun Heng , Salleh Hanim
Published: October 2014

This paper presents work on improving piezoelectric energy harvesters. Harvesting energy from vibrations has received massive attention due to it being a renewable energy source that has a wide range of applications. Over the years of development, there is always research to further improve and optimise piezoelectric energy harvesters. For this paper, the piezoelectric specimen is made of PZT (Lead Zirconate Titanate), brass reinforced and has 31.8mm length, 12.7mm width and 0.511mm thick. An external beam is implemented to provide deflection amplification which in turn increases the output of the energy harvester. Depending on the configuration of the external beam, it can amplify output voltage from 100% to 300%.
The Index Matching Method and its Application in V3V Measurements
Authors: Wang Jian Gang , Wang Hua Lin , Fan Yi , Huang Yuan
Published: October 2014

In imaging measurements on the fluid flow, the quality of particle image is essential to the outcomes of the velocity field. The method to eliminate the problems of refraction and reflection is to match the refractive indices of the working fluid and the surrounding solid wall. In this article, a comprehensive summary of the refractive index matching method was presented. Three fluid materials, two organic and one non-organic was used to conduct index matching and their effect were compared. Results show the perfect index matching is effective to improve the measurement accuracy of imaging measurements.
Based on the Protection of Water Pack Polysaccharide Processing Technology and its Optimization
Authors: Zhu Yun Long , Wang Qian Qian , Yuan Yang , Zhu Jing Jing
Published: October 2014

Purpose: For health water pack polysaccharide easy loss occurred during processing, establish a high retention rate of the processing method. Method: Chooseing slice thickness, heating time and temperature as the parameter, the water pack for steaming, boiled, Fried, baked oil heating treatment, determination of the water pack polysaccharide content, it is concluded that optimal process parameters, the retention rate of statistics. Results: The best conditions for water pack all kinds of processing method is: (1) steamed products: slice thickness of 1.6 cm, 106 °C steamed 10 mins; (2) boiled products: slice thickness of 1.2 cm, 90 °C cooked for 10 mins; (3) baked products: the slice thickness of 0.2 cm, 160 °C baking 14 mins; (4) Fried products: the slice thickness of 0.2 cm, and 150 °C the frying time of 5.5 mins. Processing products in water pack polysaccharide retention rate is as follows: Steaming > Boiled > Fried > Baking. Conclusion: steamed processing for water pack polysaccharide retention rate is high, is the water pack of preferred processing method; Boiled, grilled, Fried method should choose low heating temperature.
Study on Control Technology of Project Management for Construction Cost in Civil Engineering
Authors: Liu Lei
Published: October 2014

Project management in civil engineering is the basis for the management of construction enterprises, and in project management, control technology is the priority among all priorities. Control technology is good or bad will directly affect the enterprise profit or not. This article research on the significance of control technology of the project management in civil engineering and the present situation of control technology. Finally propose to the methods of strengthen the control technology.
Energy Saving Technology for Doors and Windows of the Building
Authors: Yang Fu Yun
Published: October 2014

Doors and windows of the building is an important part of the building envelope. AS the transparent and open envelope of the building, doors and windowsare the weakest part in the winter and summer heat preservation. It directly affects the energy performance of buildings. Therefore, do a good job of building doors and windows energy saving is an important way to optimize the indoor environment and realize energy saving.
Concise Analysis in Selection of Reflection Glass Curtainall
Authors: Chen Jiu Quan
Published: October 2014

With the extensive use of glass curtain wall, the resulting energy saving, light pollution, fire safety problems also arise, which main influence factors and is directly related to the choice of the curtain wall glass, in other words, the problem of glass curtain wall is mainly the selection of the glass.
Control Technology Based on Information Feedback for Construction Project Management in Civil Engineering
Authors: Liu Lei
Published: October 2014

The civil engineering construction is a very complicated production activities. In the whole construction process need to consume a large amount of manpower, consume a large amount of materials, use a lot of equipment, also need to deal with complex technical problems a lot. So this is for the civil engineering construction project management have strict requirements. This paper from the quality control, schedule control, cost control three aspects of the civil engineering construction project management analysis. Quality control Construction quality is the foundation of project management work, is the basic requirement of the construction of the project. Have important influence on the quality of the whole construction quality of engineering quality control. Because the civil engineering construction comprises a plurality of procedures, quality control is usually divided in time for the preparation of construction quality control, the quality control of construction process and quality control of completion and acceptance of three stages. Preparation of construction quality control of the main content is: each enterprise carefully check to participate in the project entity construction qualification, including professional subcontracting subcontracting, materialsand material suppliers; according to the basic principles of quality management, review project quality plan, quality requirements, implementationplan, including examination, treatment and other sectors to establish quality control preliminary scheme;, once appear quality problem, can quickly take thepreliminary scheme, guarantee the quality of the whole project. Figure 1 Quality process control before, during and after the event.
Research on Fusion Tracking Technology in Heterogeneous Multi-Sensor
Authors: Liu Yan Ju , Xie Chun Xiang , Song Jian Hui
Published: October 2014

Heterogeneous multi-sensor’s fusion tracking can detect precise distance and angle to the target. For heterogeneous multi-sensor issues, radar, infrared sensor and laser sensor’s data fusion, and target tracking are studied, weighted fusion algorithm based on Lagrange and unscented kalman filter are adopted, which make date fusion and tracking filtering for target. Simulation results show that the radar / infrared / laser sensors can realize data fusion and tracking to the target, and the accuracy is significantly higher than radar and infrared/laser, and then tracking effect is better.
Study on Two-Wheeled Self-Balancing Electric Vehicle Based on Fuzzy PD Control Algorithm
Authors: Yang Zheng Cai , Wang Bao Hua
Published: October 2014

A Two-Wheeled Self-Balancing Electric vehicle control system was developed base on the system design, hardware development and software strategies.The paper designed the posture acquisition module by gyroscopes and accelerometer sensors, and improved the control ccuracy using Calman filtering algorithm. Based on the system structure model, construction of Two-Wheeled Self-Balancing Electric vehicle dynamic equations by using the analysis method of Newtonian echanics was developed.A fuzzy PD controller was designed,the displacement and velocity as the input variable is controlled by fuzzy controller, and the tilt angle and angular velocity is controlled by PD controller. Finally, the platform of real-time control system was established for parameters adjustment and real-time control.Experiments show that the system has good robustness,high real-time response and has a higher market value.
Analytic Design on Driven Member of Spatial Five-Bar Mechanism Doing unto Three-Ordered Intermission on Limit Positions
Authors: Wang Hong Xin , Dai En Hui
Published: October 2014

It is presented that driven member of spatial five-bar mechanism doing unto three-ordered intermission on limit positions can be analytically designed. The design process is that a combined mechanism is firstly constructed by five bars; the displacement functions of the front three-bar and back four-bar mechanisms are separately built, let one order derivatives of two displacement functions separately be zero on the limit positions, and then geometrical relationships and solution on the intermittent mechanism are gotten. A design example shows that this analytic method is simpler and transmission characteristics are better than optimization design method.
Data Processing in Abound Solutions of (2 + 1)-dimensional Boussinesq Equation
Authors: Gong Han Kun , Zhao Xiao Shan , Zhao Guan Hua
Published: October 2014

In this paper, the repeated exp-function method is applied to construct exact traveling wave solutions of the (2+1)-dimensional Boussinesq equation. With aid of symbolic computation, many generalized solitary solutions, periodic solutions and other exact solutions are successfully obtained. Thus, it is proved that the method is straightforward and effective to solve the nonlinear evolutions equations.
Applied-Information Technology in Sigma-Delta ADC Based on P87LPC764
Authors: Ji Pei Jie , Han Zhi Gang
Published: October 2014

The paper introduces the theory of Σ-ΔADC and a method of implementation of Σ-ΔADC with MCU, P87LPC764. It also presents the circuit and program flow chart. P87LPC764 has these characters: low power consumption, the internal comparator in the MCU, simple structure with some components and better resolution.
Research on Target Recognition of the Millimeter Wave Car Collision Avoidance Radar Based on the LFMCW
Authors: Zhao Shuang , Chen Lei
Published: October 2014

When adding zero to the the sampling points or weighting the sampling points to suppress the sidelobe, the result of the one-dimensional FFT processing for the target echo will appear multiple lines in the the main lobe of the spectrum. It creates fuzzy targets which we can not distinguish it is a target or multiple targets. To solve this problem, we proposed a correction algorithm. By the correction algorithm, the multiple lines in the main lobe of the spectrum can be corrected to be a single line in the main lobe. It solves the problem of fuzzy targets and improves the distance accuracy of the radar.
Effect of Ti and Zr Composite Refiner on Microstructure and Tensile Properties of Pure Aluminum
Authors: Yu Ai Wu , Yang Cheng Gang , He Peng , Chen He
Published: October 2014

This study investigated the influence of Ti and Zr grain refiner on the microstructure and tensile properties of pure aluminum. The results show that Ti and Zr composite refiner exhibit better grain-refining effect than that of Ti or Zr added alone, only adding 0.15%Ti and 0.15%Zr can positively refine the grain size and change the growth morphology from columnar grains to fine equiaxed ones. When composite adding 0.5%Ti and 0.3%Zr, the tensile strength of the alloy is increased from 43.5MPa of pure aluminum to 84.4 MPa and the average grain size is reduced to only about 62μm.
Experimental Analysis of Mechanical Properties of High Organic Soft Clay at Different Depths
Authors: Liu Fei , Chen Jun Song , Li Kai Wen
Published: October 2014

In this study, with regard to the differences of formation stage and physicochemical properties for different high organic soft clay layers, a series of laboratory tests have been carried out to evaluate the mechanical properties of high organic soft clay in Northeast China. The conventional high-pressure consolidation and strain-controlled triaxial shear tests have been carried out to measure the compression and shear strength of high organic soft clay which formed in different ages. Furthermore, the comparisons of stress-strain relations between undisturbed and remoulded high organic soft clay samples under the confining pressure of 300kPa reveal the significant differences in compression and shear strengths of high organic soft clay at different depths, which can be interpreted by the differences in the degree of decomposition of the soil. The test results show that the degree of decomposition of high organic soft clay greatly depend on its formation stage at different depths, which is deemed to determine the mechanical properties. This study will provide a good guide to civil engineers on the constructions of the foundation.
The Production and Polymerization of Polyacrylamide
Authors: Jing Guo Lin , Zhan Shao Wei , Du Jing , Yuan Wen
Published: October 2014

In this paper,the different form of polyacrylamide and the production of polyacrylamide at home and abroad are summarized.The history, development and the tendency of polyacrylamide around the world are presented.
Manufacturing Research with Key Applied Technology in Vacuum Freeze-Drying Leisure Meat Processing
Authors: Ma Yan , Wu Shuai , Meng Xian Jun , Liu Wei Wei
Published: October 2014

This paper studies thefreeze-drying process of Chinese style ham and western Germany fruit tree tenderloin , get their eutectic point, melting point and collapse temperature, freeze-drying curve and its heat and mass transfer characteristics, and determine the precool temperature and highest limited temperature of sublimation interface . The effects of system pressure on freeze-dried rate in freeze-drying process is discussed, determining the methods of regulating pressure circularly.
Research on Food Manufacturing with Effect of Cooking on Lotus Roots Absorbing Cholesterol and Saturated Fatty Acids
Authors: Zhu Yun Long , Chen Ting , Zhu Jing Jing , Yuan Yang , Liu Xi
Published: October 2014

Target For the lotus roots have caring characteristics on inventions of obesity and preventions of“Three Height”, which compared the test on the absorption function of lotus roots absorbing cholesterol and fatty acids after cooking ,provide the basis for reasonable edible method and develop the special adsorbent.Method The lotus roots were steamed, boiled, fried and microwaved,then tested and compared the changes of the adsorption of cholesterol and fatty acid, studied on the influence factors of adsorption, and got the processing method of high adsorbability.Results ① With the extension of adsorption time，the amount of cholesterol absorbed by all samples surges，which peaks after 1-1.5h. While as more lotus roots are used ,the amount of cholesterol absorbed declines, which compared absorption by different methods: microwaving ＞ poaching＞steaming＞frying. ② The lotus roots absorbed saturated fatty acids＞the lotus roots absorbed unsaturated fatty acids,which compared absorption by different methods: steaming＞poaching＞microwaving＞frying.Conclusion In order to treat disease of heart head blood-vessel and ensure to play a role in absorption and excretion on cholesterol and saturated fatty acids after eating ,Lotus roots are promoted to use cooking recipes of microwaving,steaming and poaching instead of frying .
Green Building Studio Test Result Comparison with Test from ANSI ASHARE Standard 140-2011
Authors: Jamnický Martin
Published: October 2014

Computer simulation is an important and proven method to help understand and analyze the thermal performance of buildings, and predict their operational energy consumption. Building energy simulation is widely used to help design energy efficient building envelopes and HVAC systems, develop and demonstrate compliance of building energy codes, and implement building energy rating programs. However, large discrepancies exist between simulation results from different building energy modeling programs. This leads many common users lack confidence in the results from building simulation methods.
Function of Double-Skin Transparent Façade and its Impact on the Energy Regime of Internal Climate of Adjacent Spaces
Authors: Mikle Stanislav , Bielek Boris
Published: October 2014

Tall slab-shaped building of north-south orientation. Narrow cavity double-skin transparent façade. South (S) external wall with application of double-skin transparent façade. North (N) external wall with application of conventional transparent façade. Energy regime of narrow cavity double-skin transparent façade in summer. Function of double-skin transparent façade and its impact on the energy regime of internal climate of adjacent spaces. In-situ experiment and its documentation.
Selected Aerodynamic Problems of Double Skin Facade
Authors: Palko Milan , Palková Adela
Published: October 2014

Simulation program ANSYS. For mathematical description of fluid flow (air, liquid), mathematic variation methods are used represented by the two most significant ones: Finite Element Method (FEM) and Volume Element Method (VEM). The fluid flow problem is defined by three laws: conservation of mass, conservation of momentum, conservation of energy. Geometrical parameters of element FLUID 141. Aerodynamic mode of double skin façade. Simulation model for inlet and outlet channel of double skin façade. To estimate aerodynamic entrances for inlet and outlet channel of the intermediate space for double skin facades. Aerodynamic and geometrical boundary conditions of the model. Simplified modelling of net for insect with support of real constant.