bluuebunny/crossref_metadata_2025 huggingface dataset:
Multiple Regression and Neural Network Based Characterization of Friction in Sheet Metal Forming
Authors: Lemu Hirpa G. , Trzepieciński Tomasz
Published: October 2014

This article proposes a frictional resistance description approach in sheet metal forming and the objective is to characterize the friction coefficient value under a wide range of friction conditions without performing time-consuming experiments. To describe the friction condition in sheet metal forming simulations, the friction coefficient should be quantified using friction models. Realistic friction models must account for the influence of surface roughness and surface topography on the lubricant flow and dry friction conditions. Due to considerable amount of factors that affect the friction coefficient value, building the analytical friction model for specified process conditions is too demanding. Thus, mathematical models that describe the friction behaviour using multiple regression analysis (MRA) and artificial neural networks (ANN) are utilized. The regression analysis was performed using the user subroutine in the MATLAB, while the ANN model was built in STATISTICA Neural Networks. As input variables for regression model and training of multilayer perceptron (MLP) the results of strip drawing friction test were utilized.
An Amphiphilic Chitosan-Polylactide Graft Copolymer and its Nanoparticles as Fungicide Carriers
Authors: Mei Xiang Dong , Liang Yan Hui , Zhang Tao , Ning Jun , Wang Zhong Yue
Published: October 2014

In the present study, an amphiphilic chitosan-polylactide (CS-PLA) graft copolymer was synthesized through grafting polylactide (PLA) onto water-soluble chitosan (CS), and the chemical structure of this newly developed copolymer was confirmed by FT-IR, 1H NMR and thermogravimetric analysis (TGA). Stable flusilazole-loaded nanoparticles (NS), with a size near 280.3 nm and a loading content (LC) of 29.0%, were prepared for the fungicide delivery using a nanoprecipitation method. Moreover, size, size distribution and the flusilazole LC as well as the in vitro release profile of flusilazole-loaded NS were investigated. In conclusion, the NS could provide a controlled release of flusilazole and enhance the penetration of flusilazole in the plant compared with classical flusilazole emulsifiable concentrate (EC) formulation due to their small particle size. Therefore, the CS-PLA NS could be used as fungicide carriers for the flusilazole delivery system.
Ultrasonic and Density Studies of D(+) Mannose with Aqueous Electrolytes at 303K
Authors: Akhtar Yasmin
Published: October 2014

The present experimental investigation was carried out in order to explore the possible molecular interactions of D(+) mannose with mixed solvent of aqueous NaCl, KCl , MgCl2 and CaCl2at 303 K. Experimental values of densities and ultrasonic velocities were carried out of the ternary mixture solution D(+) mannose with aqueous NaCl ,KCl, MgCl2 and CaCl2. Aqueous alkali metal halides (NaCl ,KCl , MgCl2 and CaCl2 ) were added under different molalities with D(+) mannose. The related and relevant parameters correlated to the present study such as adiabatic compressibility Ks, acoustic impedance Z, apparent molal volume фv, apparent molal adiabatic compressibility, фKs, and partial molal volume ф0v and partial molal adiabatic compressibility, фoKs at infinite dilution. The present investigation has exploited the possible molecular associations such as ion-ion, ion-solvent, solute-solute and solute-solvent interactions in these systems. It has been observed that there exist strong solute-solvent interaction and complex formation between in these ternary systems.
Improvement of Mechanical Properties in Bamboo Maleic Anhydride Grafted Polypropylene/Polypropylene Composite Enhanced with Resin Impregnation Method
Authors: Nam Gibeop , Wakamoto Noboru , Okubo Kazuya , Fujii Toru
Published: October 2014

Previously bamboo fiber reinforced PP composites was manufactures using Polyvinyl Alcohol (PVA) and Phenolic resin for Resin impregnated bamboo fiber with polypropylene (PP). Using 40% weight fraction of bamboo fiber in PP matrix, PVA impregnated composites with mean flexural and tensile strength 10% higher than untreated were produced. The PVA treatment improved the tensile and flexural strength of bamboo/PP composites and increased water absorption ratio. Next, matrix modified with Maleic Anhydride grafted Polypropylene (MAPP). For matrix PP mixed with 10% of MAPP. In this study, resin impregnation method dose not make different for mechanical properties of composites. Untreated and PVA, Phnolic resin impregnated mechanical properties was almost same. However; it can decreased water absorption PVA resin absorption bamboo fiber composites.
Study on the Bactriostasis of Nano-Silver against Four Strains of Bacteria
Authors: Qiu Lu , Yang Hai Han , Lv Jia Yan , Fan Shu Guo , Xie Mei Hua , Wang Zhen Ji , Gao Jian Hui
Published: October 2014

Through a comparative study of the bacteriostatic effect of nanosilver of different species and concentrations against bacteria, it is found that nanosilver have significant bacteriostatic effect against bacteria. Bateriostatic effect of nanosilve 15# against B. thuringiensis is significantly better than E.coli, s. aureus and B. subtillis. The optimal concentrations of 15# for inhabiting E. coli, S. aureus, B. subtillis and B. thuringiensis respectively are: 20 mg/L, 10 mg/L, 1 mg/L, 40 mg/L. nanosilvers of 13#, 14# and 15# have no significant differences in the bacteriostatic effect against E.coli, but are all significantly better than the bacteriostats of lincomycin hydrochloride and streptomycin sulfate. Antibacterial principle of nanosilver is damaging the cell membrane permeability.
Side Effect of Production of Biodiesel from Jatropha Seed Oil: A Case Study in Thailand
Authors: Rodjanakid Kanokon , Charoenphonphanich Chinda , Srinorakutara Teerapatr
Published: October 2014

The objective of this research is to produce biodiesel from the jatropha seed oil and compare its lubricating properties to other types of fuel used in a compression ignition engine. The optimum mixture is also investigated. The produced biodiesel is tested to determine its identity and purity. The result showed that its purity is 98.38%, which is higher than 96.5% as specified by the standard of Department of Energy Business. The resulting biodiesel is tested in a compression ignition engine, including as an additive to stabilize the ethanol in diesel oil. The four types of fuel blends are; diesohol with a proportion of diesel : ethanol : biodiesel D95E5B5 by volume, pure biodiesel from jatropha seed oil, biodiesel with low proportion D95B5, and a standard diesel oil. The test results of physical properties of the four types of fuel show that all meets the standard of high speed diesel oil, except the flash point property of the diesohol. To compare the lubricating properties, each type of the fuel has been tested with the High Frequency Reciprocating Rig (HFRR) according the CEC-F-06-A-96 standard. The results showed that the pure biodiesel from jatropha seed oil, biodiesel D95B5 and diesohol D95E5B5 have the wear scar 169 μm, 204 μm, and 205 μm respectively. The wear scar of each type of the studied fuels is below the allowable standard wear scar 460 μm.
Formation of THMs, Microcystin-LR and Odors from Microcystis aeruginosa - Derived Organic Matter
Authors: Wang Huan , Liu Dong Mei , Wang Peng , Cui Fu Yi
Published: October 2014

Algogenic organic matter (AOM), including extracellular organic matters (EOM) and intracellular organic matters (IOM) can interfere with drinking water treatment processes and cause water quality problems, among which the formation of disinfection byproducts (DBPs), microcystins and odor and taste compounds are of particular concern. In this study, the formations of THMs, Microcystins-LR and 2-MIB during four growth phase (lag phase, exponential phase, stationary phase and death phase) were investigated. The THMs formation potential of EOM and IOM were compared. Higher CHCl3 concentration was found in IOM than that in EOM. In the presence of bromide, more brominated-THMs generated, and the TTHMs increased more rapidly in EOM than IOM. The 2-MIB was found a similar trend with the MC-LR in the four growth phase. The total 2-MIB was gradually increased as a function of the time. The formation of MC-LR and 2-MIB depended on algae density.
In Vitro Cytotoxic Studies of Ultrafine TiO2/Graphene Oxide Sheet Nanocomposites in Human Alveolar Epithelial Cells
Authors: Gao Jing , Yuan Xue Shun , Wang Yu , Cao Lin , Dong Peng Yu , Cao Bao Cheng
Published: October 2014

The novel TiO2/graphene sheet (TiO2/GSs) nanocomposites were synthesized using graphene oxide sheets and TiCl3. All target composites were characterized by transmission electron microscopy (TEM), X-ray electron diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectra (EDX), and the surface areas were tested with the Brunauer-Emmett-Teller (BET) method. We studied the cytotoxicity of TiO2/GSs nanoparticles on A549 cells by examining the influence of TiO2/GSs on cell morphology and viability by methyl thiazolyl tetrazolium (MTT) assay. We also determined membrane integrity and apoptosis of A549 cells after different doses of TiO2/GSs exposure by LDH assay and flow cytometry. Assay of A549 cell viability showed regular reductions with a time-and dose-dependent tendency after exposure to pure TiO2, TiO2/4.2wt% GSs and TiO2/6wt% GSs for 24 hrs or 48 hrs. The LDH released and cellular apoptosis also had a dose-dependent effect, which was associated with the surface area of TiO2/4.2wt% GSs. Our results provide essential knowledge of the acceptable biocompatibility of TiO2/GSs nanocomposites, and only when cells were exposed at a high concentration (≥50 μg/mL), and for a prolonged period of time did TiO2/GSs nanoparticles exhibit minimal cytotoxicity against A549 cells.
Research of the Unknown Cause of Death of Caesio diagramma
Authors: Qiu Jun Qiang , Song Zeng Fu , Su Huai Yu , Yang Shu Ting , Hu Kun , He Pei Min
Published: October 2014

To find out the etiology and prevention methods of the death of Caesio diagramma. Isolate the pathogen from the fester surface, liver, kidney , intestinal and other organizations of the diseased Caesio diagramma; After the purification of the predominant strains, the phylogenetic analysis of genetic relationships was done by determining 16s rDNA gene and Homology comparison was done with the BLAST sequence detected and registered in GenBank sequence ; In the end, phylogenetic trees were constructed and the drug sensitivity experiment and pathological observation were taken. Aeromonas hydrophila is the cause of the death of Caesio diagramma, it is highly sensitive to chloramphenicol, florfenicol, cefotaxime, gentamicin, amikacin; The pathological results indicate that the wax buildups causes increasing energe consumption of Caesio diagramma,which decreased the resistance of Caesio diagramma and even leads to secondary bacterial infection. Pathogen infected the liver and spleen tissues which causes the disease and death of Caesio diagramma. Aeromonas hydrophila causes the death of Caesio diagramma, and the results have an important guiding significance for the healthy breeding of Caesio diagramma and other ornamental fish
The Effects of Quality Changes in Pomfret (Pampus argenteus) Fillets from Different Treatments during Chilled Storage
Authors: Lan Wei Qing , Xie Jing , Zhu Feng , Zhu Rui Qi
Published: October 2014

The effects of modified atmosphere packaging (MAP: 80%CO2/20%O2) and chitosan (CS: 10.0g/L) on the shelf-life of pomfret (Pampus argenteus) fillets during chilled storage were studied. Quality assessment was based on biochemical (total viable counts (TVC), total volatile base nitrogen (TVB-N), tri-methylamine (TMA-N), K-value, pH value) and sensory analysis indices determination. The results showed that MAP and CS could keep the sensory quality of Pampus argenteus, delay its deteriorating speeds and slow down the increase of K-value effectively. Compared with the control samples, the shelf-life of pomfret samples in MAP and CS stored at 4±1°C were 10, 12d respectively.
Green Synthesis of Spinel Magnetite Iron Oxide Nanoparticles
Authors: Yuvakkumar R. , Hong Sun Ig
Published: October 2014

Spinel magnetite Fe3O4 nanoparticles were synthesized using rambutan peel waste extract as a green ligation and chelating agent. The green synthesized nanoparticles were characterized employing X-ray diffraction (XRD), Raman spectroscopy, FTIR spectroscopy and transmission electron microscopy (TEM) studies. The XRD study revealed spinel phase hda a magnetite structure. The formation of iron oxide nanoparticles using rambutan extract was confirmed employing IR studies. XRD, FTIR and Raman spectrum analyses all supports the synthesis of Fe3O4 nanoparticles. The TEM revealed the spinel morphology of the biosynthesized nanoparticles with 200 nm.
Isolation, Identification, and Characterization of an Organophosphorous Pesticide Degrading Bacterium, Enterobacter ludwigii M2
Authors: Zhao Ying , Zhao Ping , Wang Ya , Qi Weng Jing
Published: October 2014

Strain M2 which can degrade organophosphorus pesticide residues was isolated from the soil. It could tolerate concentrations up to 500mg/L of methyl parathion, 500mg/L of chlorpyrifos and 1000mg/L of dimethoate in mineral salt medium containing 0.5% sucrose. In the soil test, strain M2 could degrade 93% of methyl parathion in the soil within 32 days, 71% of chlorpyrifos within 54 days. The degradation rate of strain M2 is much greater than that of natural microorganisms, soil adsorption and the capacity of natural degradation. Strain M2 was identified as a pesticide-degrading strain of Enterobacter ludwigii according to phenotype, biochemical properties and 16S rDNA sequence analysis. The type strain was M2 deposited in China General Microbiological Culture Collection Center on June 8, 2009 and the collection number is CGMCC NO.3092.
Optimization for the Process of Chlorophyll a Extraction by Orthogonal Method
Authors: Wu Jun Sen , Liu Chen Chen , Li Bing , Wan Xiu Zhi
Published: October 2014

The 90% acetone as extraction agent used in order to obtain the ultrasonic assisted extraction conditions of chlorophyll a. The ultrasonic power, ultrasonic time, centrifugation time and rotational speed as the four study factors and the chlorophyll a concentration as the target, here, the L9(34) orthogonal table of orthogonal experiment design are used in order to determine the optimum extraction contractions, basing on the single factor experiment. The experimental results shows the algae containing water can get better extraction effect, after ultrasonic 30 minutes in 225W and 6000r/min speed centrifugal 9 minutes and then mixing, repeat ultrasound centrifugation steps.
Peculiarities of Recultivating the Ash Dump of Power Station-1 in the City of Khabarovsk
Authors: Suprunova A.A. , Krupskaya L.T. , Borzenkova T.G.
Published: October 2014

The article presents the results of the research work on the peculiarities of recultivation of the ash dumps of power station No1 (PS1) in the city of Khabarovsk. The research showed that the climatic conditions of the region promote the dust dispersal of toxic agents from the surface of the ash dump. The pollution of the air basin here can be attributed to the extremely high level of pollution (EHP), the priority pollutant is the dust containing heightened concentrations of heavy metals (Pb, Mn, Cu, Cr, Co, Ni, Cd). As a result it leads to the deterioration of the population’s health, especially to the high level of respiratory organs diseases. The research of the sprouting of the herbaceous plants (mixture of timothy-grass, clover and mustard) on prepared model soils showed their healthy growth. The ash chemical composition was studied. It showed high concentration of toxic chemical elements (Hg, Be, Sr, Cd, V, Th, 40K, Cr, Mb, AS, Sb,Se, Te, Pb, Ni, Co). The migration intensity of heavy metals ions into the plants was analyzed. On the basis of the experimental research the optimum composition of the substrate was revealed and recommended for recultivating the ash dump of PS1, namely: soil+sand+ash. Climatic conditions of the Khabarovsk Krai do not permit to recommend the sand+ash substrate for recultivation because of strong winds.
The Impact of Water Right Transfer from Agriculture to Industries: A Computable General Equilibrium Analysis
Authors: He Wei Da , Lu Ping , Deng Pei
Published: October 2014

Based on a general equilibrium model, we estimates the potential economic benefit of water rights transfer from agriculture to industries. We use the input-output table of China 2010 to build the general equilibrium base solution, and simulate the improvement of the technical efficiency of agricultural water use and the transfer of the saved water to industries. Results show that the transfer of water right from agriculture to industries can contribute to real GDP growth, price level decrease, and industries’ output growth.
Research on the Current Treatment Status and its Effectiveness of Rural Sewage in Guangxi
Authors: Chen Zhen , Chen Guan Wen , Li Hai Xiang , Han Biao , Huang Fu Ping , Zhang Wei Wei
Published: October 2014

In 2011, Guangxi makes the Lijiang River Valley, Red River Basin in Guangxi, Xijiang River Basin in southeastern Guangxi and Beibu Gulf Coastal Area of Guangxi as the demonstration zone of rural environment management. In 2012 and 2013, that four regional construct 487 and 566 facilities with the disposal capabilities of 36995m3/d and 33740m3/d. The disposal capability of a single facility is normally less than 150m3/d. The main processing is anaerobic-anoxic-aerobic biologic contact oxidation-constructed wetland and the investment in construction is small. The quality of the effluent water of the accepted facilities meets the construction requirements and good governance effect is obtained.
Eco-Environmental Assessment of the Low Hilly Area Based on Matter-Element Analysis Method: A Case Study of Pingdingshan City, China
Authors: Yu Chang Li , Yu Hai Long , Wang Yu Bo
Published: October 2014

On account of the ambiguity of the concept of eco-environmental quality and the incompatibility of evaluation, the paper takes regional eco-system as "Natural - Economic - Social" complex, with the using of Matter-element Analysis Method, selects the 2012 statistics data source of the study area, gives an effective eco-environmental evaluation of the hilly areas in Pingdingshan city by the calculating of Euclid approach degree. The evaluation results show: Euclid approach degree ρHj (City center) >ρHj (Lushan) >ρHj (Ruzhou) >ρHj (Baofeng), while the number is between 2 and 3. It showed that the eco-environment quality in Pingdingshan hilly areas is good, waiting for further improvement. It offers the scientific basis and countermeasures for the restoration and further development of the eco-environment in this area.
The Management Research of the Mineral Resource Complex at the Sustainable Development Level
Authors: Badrakh-Yeruul T. , Zhang Jian Hua , Chinzorig B.
Published: October 2014

Human beings have recognized that the philosopy of “Utilization of natural resources for economic reasons disregarding the need for replenishing these resources” would overexploitate all the natural resources in the world and realized that we must live by adapting to the nature in the modern 21st century. This new development model is known as “Sustainable development”. The model is being implemented by many nations in the world regardless of whether they are big or small, developed or under developed. The “Sustainable development” model includes educational and development requirements that countries need to address in order to follow the model.This paper presents our hypothesis on the economic development model that fulfills the above requirements gipro-economics and documents the results of our research on this hypothesis.
Pollution Characteristics and Ecological Risk Assessment of Hg and As in Sediments from WuHe Wetland
Authors: Ma Xiao Tian , Liang Ren Jun , Qiu Ji Cai , Wang Li Zhi , Wang Xiu Zhen
Published: October 2014

This study used four acid digestion methods and the Tessier five-step method to analyze the content characteristics of the elements Hg and As in samples. Further measures included the enrichment factor, geoaccumulation index and potential ecological risk index, for a comprehensive ecological risk assessment of pollution by Hg and As. The average contents were 1.16 mg·kg-1 for Hg and 46.76 mg·kg-1 for As.The two class natural background level was compared to evaluate the cumulative pollution index: among all sampling points, the Hg Igeo mean was-0.55, indicating this element was non-polluting, and the As Igeo mean of 0.23 indicated pollution-free to light pollution. The overall potential ecological risk index (RI) had a mean of 64.93, which indicated slight potential ecological harm to the wetland system.
The Temporal and Spatial Vegetation Variation of Liaohe Basin and its Relation with Climate Changes
Authors: Wang Xiao Chen , Zhu Jing Hai , Hu Yuan Man , Liu Wei Ling
Published: October 2014

In this paper, 2000-2010 NDVI data of Liaohe Basin is obtained with the RS technology; the distribution map of precipitation and air temperature in Liaohe Basin is generated by the GIS technology, and then the temporal and spatial vegetation variation of Liaohe Basin and its relation with climate changes have been studied by means of raster data spatial analysis, correlation analysis and multiple regression analysis, so as to provide a scientific basis for ecological environment protection, planning and development of Liaohe Basin. It is shown from results that: 1) From 2000 to 2010, the vegetation coverage increased significantly; which presents a gradual decrease from east to west on the spatial distribution; 2) For the temporal distribution, the precipitation presents a fluctuant upward trend; while temperature is fluctuated significantly with a slight decrease. For the spatial distribution, precipitation decreased gradually from the east to west, while temperature rises from the northeast to southwest; and 3) Vegetation coverage of Liaohe Basin is positively related with precipitation and temperature in the temporal and spatial distribution, but not significantly, it is indicated that, except for the meteorological factors, the artificial impact and other factors, such as land use, played an important role to vegetation variation of Liaohe Basin in the recent 10 years. However in terms of two influence factors of precipitation and temperature, the former has significantly contributed to NDVI change of Liaohe Basin.
Investigation of Green Disposal of Smartphones
Authors: Al-Jumeily Dhiya , Hussain Abir , Macilwee Steven
Published: October 2014

This paper aims to examine energy saving techniques in the operating systems of smartphones and to discuss the environmental threat created by the ever-growing problem of their disposal. A study of battery technology focuses upon the following varieties: Nickel Metal Hybrid, Lithium Ion and Lithium Polymer. Both environmental and user benefits of longer battery life are promoted. There follows a study of global responses to the e-waste crisis, highlighting different practices and legislation in the various countries and regions. The results of a questionnaire into the public’s disposal habits are analysed and conclusions drawn. The paper concludes with suggestions for improving the current state of smartphone disposal, focusing upon the responsibility of governments, manufacturers and individuals. Also emphasized is the need for continued scientific and technological research into solutions along with ongoing educational and public awareness campaigns.
Textile Factory Energy-Efficiency Improvement in Thailand
Authors: Mungtavesinsuk Foengfurad , Lin Hung Wen , Wonggasem Kris
Published: October 2014

The textile industry plays a very important role and this industry is one of the most complicated manufacturing industries. All producing machine occupies almost 50% energy end-use. Hence, improving energy efficiency should be a primary concern for textile factory. This study aims to energy efficiency verification in Thailand textile factory. By real-time data collection for all equipment in factory, and use simulation tool to analyze whole year energy end-use, some of useful improvement strategies and energy saving percentage could be knew. Via change the subsystems, like lighting and insulation material for example, the total energy saving could at least to 10% with 2 years payback time. It will be a good start doing energy saving in textile industry in Thailand.
Axial Compression Behaviour of Wallettes Constructed Using Wood-Wool Cement Composite Panel
Authors: Md Noh Mohammad Soffi , Ahmad Zakiah , Azmi Ibrahim
Published: October 2014

This paper reports on the investigation of the structural behavior of wallettes made from wood-wool cement composite panel (WWCP). Initially, a series of experimental test were carried out to investigate the mechanical properties of WWCP namely density, bending properties (MOR and MOE), compressive strength and tensile strength for two thicknesses of WWCP (50 mm and 100 mm). Then, the axial compression capacity of WWCP was investigated using wallettes. In the fabrication of wallettes, there are two types of panel arrangement considered and denoted as W1 and W2. For W1, 100 mm thick WWCP was used and cut into size of 300 mm width and 600 mm length. The cut panels were then stacked vertically (two layer) in running bond pattern to form a 600 mm x 600 mm wallettes. The top and bottom panels were connected together with 10 mm thick mortar paste and three vertical steel bars were inserted between panels. In addition to this, an enhancement has been made by fixed two U-Nail at the connection area on each side of wallettes. For W2, a new panel arrangement technique has been proposed by integrating two layers of 50 mm thickness of WWCP (cut into size of 300 mm width and 600 mm length) with different orientation of panel arrangement to form a 600 mm x 600 mm wallettes. The front side of the panels has been arranged in the longitudinal direction, whereas back side in transverse direction. The front and back side panels were bonded together using either adhesive or mortar mix with different thicknesses to form approximately 100 mm (± 15 mm) thick wall. For mechanical properties of WWCP, it was found that, the strength properties of the panel decreases with the increased in panel thickness. For the axial compression test of wallettes, the results showed that, a new proposed of panel arrangement technique with mortar mix significantly improved the stability as well as increased load carrying capacity of wallettes.
Workability, Strength and Drying Shrinkage of Structural Mortar Containing Forest Biomass Ash in Partial Replacement of Cement
Authors: Candamano Sebastiano , Crea Fortunato , Romano Dolores , Iacobini Ivan
Published: October 2014

Aim of this work is to investigate the feasibility to implement structural mortar containing forest biomass ash (FBA), produced by a local power plant, in partial replacement of cement. Chemical composition, morphology and pozzolanicity of ash have been evaluated using Energy Dispersive X-ray analysis (EDX), SEM and Chapelle test respectively. Furthermore, fresh state properties and drying shrinkage, compressive and flexural strength of the mortars at different curing times have been investigated. Forest biomass ash at replacement levels of 0%, 10%, 20% e 30% by total binder weight has been used. FBA has been found to show only a very moderate pozzolanicity, while it adversely affect workability of the fresh mortar and compressive strength and drying shrinkage of the hardened mortar. Nevertheless, at a replacement level of 30%wt and after 28 days of curing, mortar showed a compressive strength above 30MPa.
Moisture Buffering Effect of Gypsum Board in a Marine Climate: A Field Experimental Study
Authors: Pedram Shahrzad , Tariku Fitsum
Published: October 2014

Durability, acceptable indoor air quality, energy efficiency and aesthetics are all pillars of good design in healthy buildings. A new approach for optimizing all four of these pillars is whole-building performance design. This approach involves the consideration of heat, air and moisture (HAM) transfer and control of a building, specifically, how the coupled relations between different transient systems (mechanical system, building envelope, indoor environment, outdoor environment, and occupants) affect the building performance and operation. Ventilation is one of the means of controlling indoor humidity in buildings. Its effectiveness depends on the supply air moisture level and the ventilation rate. The drier the supply air is, the higher its capacity to remove indoor humidity. In a marine climate where the outdoor air is relatively moist, higher ventilation rate is required to achieve the same level of indoor humidity in a cold and dry climate. In this study, the potential benefit of interior gypsum finishing in lowering indoor humidity peaks, through the moisture buffering process, and thereby reducing ventilation rates are investigated. A field experimental study is conducted using two identical test facilities at the Whole Building Performance Research Laboratory in Burnaby, British Columbia to test this hypothesis in a marine climate. Initial benchmarking of the recently commissioned test buildings was undertaken to ensure they behaved similarly under identical conditions. Each building was outfitted with an occupant simulator unit, which provided the humidification that would be produced by occupants. The occupants simulators were programmed based on moisture production data analysis from a real high-occupancy apartment suite, to provide two different moisture generation profiles representing typical and high intensities, scaled down to the size of the test buildings. Following benchmarking, three tests were conducted to evaluate the effect of ventilation rate, moisture generation intensity, and moisture buffering ability of finishing surfaces on indoor moisture levels. Preliminary experimental test results are presented. Future tests will be undertaken to consider other factors such as indoor air quality based on carbon dioxide concentration, heating and ventilation energy consumption, and alternative finishing materials.
The Simulation Optimization and Experimental Improvement of the Refrigerator
Authors: Zhao Ya Le , Wang Fang , Zhang Jia Wen , Yang Ding Ding , Li Tang , Liu Yan
Published: October 2014

The Chinese refrigeration industry is faced with dual pressure of energy saving and emission reduction. R600a as an alternative refrigerant of R134a is environment friendly, and the alternation is very good. Firstly, this paper established a two-dimensional steady numerical calculation model of the refrigerating chamber with R600a, and studied the influence of the temperature distribution of the refrigerator’s posterior wall under different schemes on temperature field and velocity field of the refrigerating chamber. When the function of temperature distribution is T=-11.75*y, will achieve the best temperature field and velocity field, and the results are better than the original machine. Secondly, this paper studied the experimental improvement of R600a under the best temperature distribution scheme comparing with R134a.
Humidity Sensitive Properties of Graphene Oxide Investigated by Quartz Crystal Microbalance
Authors: Yu Hui Yao , Yao Ying Long , Wang Xiao Hua
Published: October 2014

Graphene oxide has been studied as sensing material for the humidity detection in this paper. At room temperature, graphene oxide was dissolved in water to prepare graphene oxide aqueous solution. This aqueous solution was distributed on the electrode surface of quartz crystal microbalance to form a thin film for humidity detection. The results of the experiment showed that the quartz crystal microbalance sensors with graphene oxide film have good response to the change of humidity. The maximum humidity sensitivity, during the humidity ranging from 10% to 90%RH (relative humidity), has achieved ~54Hz/%RH (relative humidity). The quartz crystal microbalance sensors with graphene oxide thin film have good stability and reproducibility properties. All results implied that the graphene oxide was a potential humidity sensing material for practical use.
Experimental Study on Impact Resistance of Dump Truck Bodies Floor
Authors: Tian Bin , Liu Da Wei , Zhu Long Long
Published: October 2014

In order to study the impact resistance capability of dump truck bodies floor, a simulation model of dump truck bodies floor and impact hammerheads made of metal materials were designed, and a strain test system of bodies floor under impact loading was established, a measurement of the stress of bodies floor model was made to obtain the law of stress variation about key point of truck bodies floor model. The research laid the foundation for the analysis of impact resistance capability of dump truck bodies floor using finite element method as well as provided a reference for the structural optimization of truck bodies floor.
Study on Evaluation of Explosion Effects of Gas Injection Wells
Authors: Huang Qian , Liu Zhen Yi , Zuo Zhe
Published: October 2014

In this paper, blast effect of oil-associated gas in gas injection wells is determined when using air injection displacement, and on this basis, the relevant safety distance is determined also. Numerical simulation is used to calculate the overpressure distribution, explosion energy and TNT equivalence of combustible gas explosion in gas injection wells. Based on shock wave damage criterion, the safety distances in seven levels are obtained, which are personnel minor injuries, severe injuries, death, and destruction of buildings with mild, moderate, severe manage and destroying. Therefore, technical support is provided to accident prevention, emergency and rescue.
Comparative Experiment of Color Reproduction Methods
Authors: Jia Qi , Lv Xu Liang , Xu Wei Dong , Hu Jiang Hua , Rong Xian Hui
Published: October 2014

Digital camera which has the advantage of real-time image transferring and easily processing is more and more widely used in the packaging and printing industry with the rapid development of high-tech electronics industry. However, the color in digital camera is not accurate which affect the application. To minimize the color difference between the color in the digital camera and the real color, the color reproduction methods is developing. The field comparative experiment is carried out to compare the performance of color reproduction methods, such as polynomial regression algorithm in different color space, and color checker passport. The results show that fourth order polynomial regression color reproduction in XYZ color space has the best performance.
Assembly Line Balancing in Automobile Engine Industry
Authors: Zhang Si Qi , Zhang Xiao Chang , Wang Wan Juan , Xu Ya Lai , Deng Jia Jia , Xie Shu Xing
Published: October 2014

In this paper, under various constraints, based on LR series engine of automobile mixed model assembly line as an example, application of MMALB theory design automobile engine assembly line. To solve the multi-objective optimization problem, we establish the mathematical model between the workstation and workstation internal load balancing two optimization objectives. And engine assembly line is dynamic simulated by using the simulation software eM-Plant. The results verify the validity and practicability of the digital simulation. Finally, the planning scheme guarantees the whole assembly line load balancing and achieves production requirements.
Decision Method of Processing Scheme for Part Surface with Constraint Condition Based on T_Invariant of Fuzzy Petri Nets
Authors: Xiao Wei Yue , Yu Fei
Published: October 2014

Compared to other steps in CAPP, decision of a processing scheme representing a real challenge for engineers. However, this problem was hitherto not solved completely. Started by proposing definitions of Petri net system and T_ invariants, a fuzzy rule-based Petri net model is then presented, which allows for machining part surface according to the principle of Petri net and the production rule. Afterwards, a new selective processing program is stated, which is so-called T_ invariants generation, considering the constraints in manufacturing resources. Research of a real case was finally carried out as an illustration, which shows that the best/hypo-best processing plans for part surface can be obtained by using of the proposed decision-making method.
Rigid-Flexible Coupling Dynamics of Folding Boom System in Range Changing Case
Authors: Du Liang , Lan Peng , Lu Nian Li
Published: October 2014

To proceed on dynamic analysis of folding boom system in its range changing case with high precision and convenience, conditionally decoupled the nonlinear flexible system dynamic equations, obtained motion equation of rigid system and flexible element kinematic equation considering rigid flexible coupling effect, an efficient dynamic analysis method for planer link system was given. Based on Lagrange equation, basic formulations of flexible and rigid multi-body dynamic for open link mechanism were established. By introducing equivalent rigid virtue element, the unified pattern of multi-sectioned rigid body system dynamic equation was obtained. Took the rigid body dynamic analysis as precondition and borrowed the thought of KED method, a high-efficiency elastokinetics method was given for planer link system. Took the range changing case of certain overhead working truck arm as example, analyzed by the elastokinetics method, obtains the dynamic response considering rigid-flexible coupling effect. Results show that the elastokinetics method for planer link system is of high efficiency and accuracy.
Research on Conceptual Design Selection Based on Engineering Science
Authors: Li Jia , Qiu Yong , Wei Fa Yuan , Jiang Rur Song
Published: October 2014

Engineering Science (ES) is bridge between basic science and engineering applications. It’s an important academic guidance for conceptual design selection of a large, complicated engineering project. Traditional plan selection depends largely on qualitative information and is subject to subjective factors. Using System Engineering (SE) methodology combined qualitative and quantitative information, this paper applies theory of ES to plan selection and decision making process Analysis on objectives, quantitative modeling and expert knowledge of complicated engineering project is conducted, in order to support a more objective, science-based decision making during conceptual design phase.
Research on the Intermediate Frequency Receiver of L-Band
Authors: Zhao Shuang , Liu Yun Qing
Published: October 2014

With the rapid development of wireless communications, there are more and more ​​stringent requirements on the wireless receiver, such as low power consumption, high reliability, low price, as well as smaller size. The design of RF receiver is the key to achieve this goal. According to the actual needs of the project, a double conversion IF receiver is designed. At first, the high frequency signal is changed to a higher IF, and the second output is a zero-IF signal. Experimental results show that the receiver has 100dB gain and a flat bandwidth.
Data Processing and Applied-Information Technology for Economic Development Problems of Ginseng Based on Relevance Theory
Authors: Wang Zhong Zheng , Zhang Da Qing
Published: October 2014

In this paper, by establishing the method of grey correlation model, the key research on the quality of science and technology of farmers impact on Baishan ginseng industry development, research suggests that by improving the local the agricultural information construction, and agricultural comprehensive technological capabilities, to the local economic development will play a promote role.
Electrochemical Performance of Anode Materials for Lithium-Ion Power Batteries
Authors: Zhang Wan Hong , Wang Kun Peng
Published: October 2014

Graphite is widely used as the negative electrode material. To find out the influence of several different modified ways on the material's electrochemical performance, the electrochemical properties of 0318、0318-GLQ、MCMB22、AGP-3-2、AGP-3-2-1 and AGP-3-2-2 batteries were investigated by means of cyclic voltammetry (CV) experimental method. Results show that surface morphology, lithium intercalate/de-intercalate process, the first coulombic efficiency, reversibility and rate capability are all different for different material. Above all, AGP-3-2-2 has the best electrochemical performance, AGP-3-2 is worst, and the results prove that coating by pitch has a positive influence on the electrochemical performance of the material.
Study on the Optical Transmission Properties of One-Dimensional Photonic Crystal of MoS2
Authors: Wu Kai , Gu Wei Xia , Wu Chen , Ma Jin Lou , Ma Xi Ying
Published: October 2014

We designed MoS2/SiO2one-dimensional (1D) photonic crystal using the concept of photonic crystal and investigated the light transfer properties by means of transfer-matrix method. We found that the transfer properties of photonic crystal can be modified by the period of photonic crystal, the thickness of dielectric layer, and the number of the defect layers. The number of photonic band gaps (PBGs) reduces with the decrease of the thickness of dielectric layer, and the position of PBGs in the spectra rapidly moves to short wavelength direction. For defect photonic crystal, the width of the PBGs obviously become larger, and the transmittance spectra oscillate more intensely, similar to the characteristics of Bragg gratings. These properties will give good instructor for the preparation of 1D MoS2quantum well light emitting devices and solar cells.
Coal Ash as Flame Retardants for Flexible Poly (Vinyl Chloride)
Authors: Ren Xue Jun , Song Chun Guang , Gao Ming
Published: October 2014

Coal ash as flame retardant was used to PVC, the mechanical properties and flame retardance of the samples were studied. The resultant data show that coal ash better effect on the mechanical properties of the sample, especially tensile strength, impact strength, and 4% of coal ash obtained good flame retardance. PVC treated with flame-retardants showed a high limiting oxygen index, high decomposition temperature, which indicated that the flame retardance of the treated PVC was improved.
Manufacturing Research with SBOS Ice Cream of Goat Milk Processing
Authors: Ma Yan , Liu Wei Wei , Meng Xian Jun
Published: October 2014

The technical process and prescription for health ice-cream using fresh goat milk and Soybean oligosaccharides (SBOS) as the main auxiliary material were explored, by measuring expansion rate and melting rate of the ice cream , both the quality of product (color, texture, flavor and tissue state) and the cost had also been considered, the different ageing time , goat milk, SBOS ,emulsifiers and stabilizers were compared and studied. The single factor test and orthogonal experiment showed that the optimum conditions: fresh goat milk 50%, sugar 10%, SBOS 10%, emulsifiers (monoglyceride: sucrose ester=1:1) 0.4%, stabilizers (CMC: gelatin=1:1) 0.35%, ageing time 4h. Under this condition, the expansion and melting rate of the final product were 95.14%, 38.83%.And the quality of SBOS goat milk ice cream product was perfect.
Effect of Scratch Depths on Tensile Strength of PMMA for Aircraft Canopies
Authors: Shi Xin Hong , Shan Mei Juan
Published: October 2014

Static tensile tests of polymethyl methacrylate (PMMA) specimens without scratches and containing a scratch whose depth was set to be 0.2mm, 0.3mm and 0.4mm, respectively, were carried out to explore effect of scratch depths on tensile strength of PMMA. Based on the experimental load-displacement curves, the specimens without scratches deform most severely when the failure comes forth. The failure deformation declines gradually with higher scratch depth, namely higher scratch depth leads to lower plastic deformation. It thus follows that the scratch significantly reduces the tensile strength of PMMA while the variation of the scratch depth from 0.2mm to 0.4mm has negligible influence on the tensile strength of PMMA.
Manufacturing Research with Feasibility of Vacuum Freeze Drying Technology for Leisure Meat Products Processing
Authors: Ma Yan , Liu Wei Wei , Huang Guo Hui
Published: October 2014

vacuum freeze drying technology is a high technology content ,involving a wide range of knowledge of technology in the field of drying technology, it is also a method of the most complex drying equipment , the largest energy consumption, the highest cost of drying method, but due to the particularity of its dry goods: the freeze-drying food has the advantages of complex water performance is good, cooler and luster of freezing and drying food to maintain good products, less nutrient loss, light weight, easy to carry transportation, easy to long-term preservation, and on the quality is far superior to the obvious advantages of other dried food, making it become the forefront of drying technology research and development.
Fire and it is Grown in a Fire Zone
Authors: Jurickova Michaela , Mikolai Imrich
Published: October 2014

The radiation is a secondary product of fire and radiation could burn other combustible materials. This new describe radiation and course of fire. In the new is describe a room in the night club with different fire protection. This room is simulated in the fire dynamic simulation program and the results are compare with really fire test. The results from this experiment and simulation can be used for practice.
Energy Saving Building in Mountain Area
Authors: Bosák Lukáš , Palko Milan
Published: October 2014

The main intention of this report is solution of energy-saving building in mountain area, which uses the resources of the natural environment. It is the building of the mountain hotel in this concrete case. Firstly, there is solved the energy concept of the building which uses natural resources. There is also described the design of a building, which is designed in an overwhelming majority as a wooden building. The constructions are handled with an aspect of their thermal properties. There has been solved the thermal analysis of the major structural compositions. The connections between compositions of layers can be seen in the construction details. Those connections form together a single thermal insulated coverage of the building. There has been also solved 2D thermal analysis of the temperatures for the opening structures, especially windows. The windows are considered in two positions of mounting.
Method for Determination of Time Constants for Annual Balance of Moisture in Building Constructions
Authors: Menďan Rastislav , Pavčeková Monika
Published: October 2014

The article presents a method of determination of new time constants for calculation of annual balance of moisture of building constructions for Bratislava. For an elaboration of the method, selected climatic factors of twenty years, which were elaborated by the first author of this paper, were used. It was the time period from 1989 to 2008. The new time constants were applied on the method of calculation of annual balance of moisture which is presented by characteristic example.
Hydrothermal Problems of Wooden Windows
Authors: Palková Adela , Palko Milan
Published: October 2014

The paper deals with the thermal moisture problems in the functional gap wooden window. The moisture transport through gap between casement and window frame at condensation temperature is the main cause of condensation of water vapour. The transport causes: air pressure differences (taking water vapour) – infiltration a exfiltration and diffusion of water vapour (different saturation of water vapour in exterior and indoor air). It analyzes the reasons for the formation of condensation in the functional gap. Experimental verification of the problem is made on a large climatic chamber for four typical samples. Computer simulations support the evaluation of the measurement results.