bluuebunny/crossref_metadata_2025 huggingface dataset:
Employees’ Cognition Toward Business Operational Risks in Swimming Pool Industry
Authors: Chang Chia Ming , Li Li Liang , Chia Fan
Published: September 2014

In this study, researchers attempted to understand the types, frequency, and influences of enterprise business risks in swimming pool industry. Meanwhile, it was to explore whether there exist significant differences between different employee characteristics. Questionnaire survey was used to collect data, 304 valid questionnaires were obtained and valid rate was 76%, from employees of swimming pool. The results of this study were as follows :There were eight enterprise business risk types, including financial risk, disaster risk, responsible risk, policy and legal risk, human resource risk, organizational and strategic risk, operational risk, and industrial risk. industrial risk was the highest influence and financial risk was the lowest on business. Difference in employee’s age and educational level were found significant differences on influence eight dimensions of enterprise business risks.
Extended Warranty Models: A Literature Review
Authors: Han Yu Cheng , Bai Yong Sheng , Wu Xiao Juan , Li Xin Yue
Published: September 2014

With the increasing of extended warranty period for complex systems, the extended warranty has aroused more and more attention for manufacturers and consumers. Although the academic research on extended warranty has made some progresses, there isn’t a detailed literature review. Considering this situation, this paper first provides a classification for extended warranty, and develops a taxonomy scheme, then reviews the literatures about the extended warranty model from different perspectives. At last, the brief discussion of future research about extended warranty is put forward in this paper.
Problems and Countermeasures for our Country’s Sustainable Development of Real Estate Economy
Authors: Xu Wei , Xiong Xin
Published: September 2014

In 2010 to 2013 the national macro-control policies on the real estate market has a strong compressive force, although the development of China's real estate investment market continued to grow still present, but under the influence of regulation just to be national policy, the growth momentum has slowed . In this paper, based on the current status of the domestic real estate industry, in line with the theoretical basis of sustainable development, in-depth analysis of the domestic real estate industry problems encountered in the development process, made some suggestions and solutions for sustainable development
Research on the Campus Logistics Optimization Problems
Authors: Liu Xiao Han , Liu Ying Long , Zhou Yong Liang , Cao Jin Xin
Published: September 2014

With the rapid development of economy, campus logistics industry has rapidly developed. At present, the university logistics has obtained certain achievements, but it also has many problems such as scope of distribution and distribution quality. In order to solve the above situation, we should make full use of campus resources, and establish campus logistics distribution center, to accelerate the process of logistics management for the construction of the campus, and to provide personalized service, logistics for the construction of the healthy and orderly campus environment.
Wear-Resisting Property of 304 Stainless Steel Surface after Infiltration of Indium and Copper Alloys by Double Glow Technology
Authors: Wang Yi Guang , Xu Jin Yong , Gao Bo , Gao Cheng , Wang Yin
Published: September 2014

Copper and Indium alloys elements were metallized into 304 Stainless Steel surface by Double Glow Plasma Surface Alloying Technology (Double Glow Technology for short). Microstructure and Resistance property of diffusion layer analyzer was analysed by metallographic microscope, scanning electron microscopy, energy spectrum, friction and wear testing machine of high speed reciprocating. The results show that process parameters of the permeability copper and indium has an obvious effect for the organization structure and performance of diffusion layer. The friction coefficient of alloying layer has a significant decrease compared with the substrate. The wear-resisting performance has an effective change.
The Analysis of Urban Medical Facility Accessibility Based on GIS - Take Wuchang District of Wuhan City for Example
Authors: Chang Meng , Qian Da Lin
Published: September 2014

Accurate evaluation of the spatial distribution of medical facility accessibility is a prerequisite for the rational allocation of medical resources. Based on the researches on the accessibility of medical space from home and abroad,using 2SFCA and the law of gravity,along with the application of geography information system (GIS),this paper analyzes the accessibility of medical facility in Wuchang District of Wuhan City.
A Study of the Compensation Legislation for International Nuclear Damage
Authors: Huang Sheng Kai
Published: September 2014

In the paper, the author will analyze the provisions in the international conventions and in some western legal systems, and probe into the particular characteristics of the civil liability of nuclear damage. The author of the article concludes that the major nuclear states in the world usually have adopted diverse remedy mechanism, including the responsibility of nuclear facility operators, social responsibility, and the state compensation liability to provide adequate, timely and reasonable legal remedies for victims.Key words: International Nuclear Damage; Civil Liability; Paris Convention; Vienna Convention
Review of the Influence of Poisson's Ratio on the Solid Propellant’s Structure and Properties
Authors: Zhang Xiao , Zheng Jian , Peng Wei , Gu Zhi Xu
Published: September 2014

In this paper, the influence of Poisson's ratio on the solid propellant’s structure and properties was summarized. Methods and important results were introduced, which indicated the research progress in the relationship between Poisson’s ratio and structural integrity of solid rocket motor (SRM).
The Summary and Analysis of Architectural Programming with the Case
Authors: Zhang Jing , Liu Jia Nan
Published: September 2014

Through introducing the principle, method and meaning of theoretical framework of architectural programming, this paper combined with the actual project illustrates the guidance and importance of the actual project of architectural programming in the architectural design process.
Dunhuang "Tan Jing" Fill School
Authors: Wu Shi Tian
Published: September 2014

Dunhuang Manuscripts "Tan Jing" Now there are five, according to a lot of finishing school-based, school-based all have their own unique, but multi-religious school revision of the method, so some issues have not been solved, This article from the perspective put forward their views on the part of philology unknown place.
Law of Development of Sports Nutrition Research Based
Authors: Lu Seng Lin , Wu Li Hua
Published: September 2014

Life is inseparable from the movement, the movement is inseparable nutrition. Through the discipline of sports nutrition research and analysis of development prospects, explore the law of development of sports nutrition, physical activity and to guide national sports practice has a very important role.
Research on Table Tennis Collision Using the Simulation Model of the Computer
Authors: Dou Yong
Published: September 2014

With computer simulation approach and theoretical mechanics analysis approach, according to two kinds of the loop plays, the author studied and compared the state change laws of loop after colliding. The two kinds of results received in analysis are identical. The speed of high-speed loop slows down to some extent, but rotate is strengthened, and the speed of high-spin loop drive is accelerated, but rotate is weaken. The paper indicates that computer simulation technology can be applied to dynamics study and state measurement of table tennis, and it also has certain guidable meaning for practicing.
Influence of Modern Technology on the Educational System
Authors: Zhang Zhi Jun
Published: September 2014

Technology integrated into the whole educational system including both the students and educators. The impact of technology influence the way students learn and teachers teach, even the efficient and effective educational services can be delivered. The paper introduces the positive and negative aspects of the influence of technology on the educational system. Technology is used to enhance learning, so it is important for educators to be comfortable using it to ensure that students get the full advantages of educational technology.
Interpretation of the Anglo-American Literary Works Translation under Chinese and Western Cultural Differences
Authors: Li Hong Juan
Published: September 2014

The translation of literary works is the important communication channel in different countries and nationalities, so the translation process will also be affected by cultural differences. Thus in the Anglo-American literary translation process, we should have a certain understanding of works writing background and period, also its language and culture. In this way, in the process of translation, we can not only master the language features but also have a deeper understanding of the cultural background so as to translate the real excellent cultural works.
Application of the Improved Three-Ratio Method in Chromatographic Analysis of Locomotive Transformer Oil
Authors: Jiang Xiao Qin , Gong Yan , Han Sa , Zhou Ke
Published: September 2014

The chromatographic analysis of gas dissolved in oil can monitor transformer operation state at any time.It will help to find out transformer latent fault.The chromatogram analysis of locomotive transformer oil mainly adopts the improved three-ratio method.This paper introduces the improved three-ratio method and chromatogram analysis steps,through the concrete example,shows that the improved three-ratio method for transformer fault diagnosis result is basically matched with the actual fault reason,and summarizes attentions.
Determination of Pb2+ in Wastewater by Lead(II)-dithizone-xylenol Orange Tenary Complex Spectrophotometry
Authors: Sun Jian Qi
Published: September 2014

An novel Lead (II)-dithizone-xylenol orange tenary complex spectrophotometry was developed for the determination of Pb2+ in wastewater. For this purpose, the parameters of spectrophotometry such as the detection wavelength, pH value, the dosage of dithizone-xylenol orange and reaction time were studied and optimized through orthogonal tests. The method was linear in the ranges from 2.1×10-3 to 6.0 μg·mL-1 for Pb2+ with R2≥ 0.999. The procedure allowed efficient recovery of the investigated Pb2+ ranging between 95 % and 103 % with a relative standard deviation (RSD) ≤ 2.1 for actual wastewater samples spiked with 1.00, 2.00 and 3.00 μg·mL-1 of standard Pb2+, respectively. These results show the method can be applied to the direct determination of Pb2+ in wastewater, avoiding the use of toxic extrant (chloroform) and masking reagent (sodium cyanide) in the traditional methods and time-consuming procedures, moreover, the investigated method is simple, accurate, reliable, and inexpensive, which implies the potential of this technique for Pb2+ monitoring in wastewater samples.
Preliminary Study on Bio-Electrokinetic Remediation of Saturated Oil-Contaminated Soil
Authors: Gu Ying Ying , Xing Ying , Shi Yun Qi , Zhang Xiu Xia , Liu Qi You , Liu Chun Shuang
Published: September 2014

Bio-electrokinetic remediation of oil-contaminated soil is a promising technology. In this study, three bio-electrokinetic remediation experiments were carried out to study the effects of external addition of oil-degrading bacteria by electrokinetics and different operational parameters on oil decontamination in saturated soil. Results showed that oil in soil migrated from the anode towards the cathode with forward electroosmotic flow and accumulated near the cathode. Oil was barely degraded without external addition of oil-degrading bacteria. Although electrolytes were refreshed every 12 hr, soil pH varied greatly at the electrodes under unidirectional operation. When electrode polarity was reversed every 2 hr, soil pH was efficiently controlled within the range of 6.35-9.75. The relative oil concentrations after the bidirectional experiment were in the range of 0.81-0.84 after 20 days of treatment. The relatively low oil degradation rate may be due to the facultative aerobic environment in the saturated soil matrix.
Study on the Magnetic Chitosan Microspheres for Removing the Perfluorooctane Sulfonate (PFOS) in Water
Authors: Guo Pan Pan , Wang Zheng Ping , Zhou Yan , Sun Yue Xin
Published: September 2014

Magnetic chitosan microspheres were prepared with reversed-phase suspension methodology using glutaraldehyde as cross-linking reagent for sorption of PFOS. In this study, the SEM image of MCTS showed that it had well-shaped spherical form with smooth surface, and its mean particle size was 4.2 μm from the particle size analyzer. Additionally, the sorption kinetics followed the mechanism of the pseudo-second-order equation, and the magnetic chitosan microspheres had a high sorption amount of 865.95 mg g-1 for PFOS due to the electrostatic interaction.
Determination of Food Preservatives in Drinks by Dispersive Liquid-Liquid Microextraction Coupled to Capillary Gas Chromatography
Authors: Sun Jian Qi
Published: September 2014

This study describes an analytical method employing capillary gas chromatography (GC) using flame ionization detection (FID) that has been developed for the simultaneous determination of food preservatives in drinks, including sorbic acid (SA), benzonic acid (BA) and methyl paraben (MP). For this purpose, dispersive liquid-liquid microextraction (DLLME) was applied as a sample preparation technique. The DLLME conditions such as the types and volume of extraction solvent, the types and volume of the disperser solvent, pH value and salt addition were investigated and optimized. The method was linear in the ranges from 0.5 to 100.0 μg·mL-1for abovementioned preservatives withR2≥ 0.9991. The DLLME procedure allowed efficient recovery of the analyted preservatives ranging between 91 % and 108 % with a relative standard deviation (RSD) ≤ 6.1 for the blank samples spiked with 20, 40 and 80 μg·mL-1of preservatives, respectively. The developed procedure was demonstrated to be a effective method for the analysis of preservatives in drinks. Furthermore, the method is simple, reproducible, envioronmentally friendly and inexpensive.
Mercury Speciation, Behavior and Remediation of Mercury Contaminated Soil: A Review
Authors: Cheng Tong , Sun Li Na
Published: September 2014

Mercury as a world wide pollutant gets much attention.The hazard of mercury differ from its forms.This paper review the transformation of mercury,especially in soil, and the remediation technologies of Mercury Contaminated Soil.
Operation and Optimization of an Alternating Oxic-Anoxic Shortcut Nitrification-Denitrification System
Authors: Gao Chun Di , Fan Shi Xin , Jiao Er Long , Li Hao , Wang Wei Xiao
Published: September 2014

A novel alternating oxic-anoxic operation mode of shortcut nitrification-denitrification was developed in a sequencing batch reactor at ambient temperature. Operational parameters favorable for maintaining the shortcut nitrification-denitrification were investigated and optimized. The experiments showed that alternating oxic-anoxic shortcut nitrification-denitrification system was able to be an independent treatment process in domestic wastewater treatment. And the optimization approach was so efficient that the main pollutant discharge targets achieved Standard A of the first class in "Discharge standard of pollutants for municipal wastewater treatment plant". Moreover, the reliability of the operation strategy in this experimentation was proved, which indicated the excellent nitrogen removal performances.
Studies on the Performance of Biofilm-MBR
Authors: Jin Wei Hong , He Cai Ling , Gao Feng , Li Chen
Published: September 2014

MBR technology for sewage treatment has the advantages of high volumetric load, good treatment performance and so on. But the MBR technology also has the shortage of membrane fouling. So this study selected the control method of fixing combination packing added in the MBR reactor, so as to reduce the membrane pollution, at the same time in the reactor to create the environment of coexistence of anaerobic and aerobic for biological denitrification. Through the research of the pollutants removal efficiency and the membrane pollution, it was founded that this method can remove 85-95% of COD and ammonia nitrogen. Effluent COD concentration generally is about 25mg/L, and the minimum of it is less than 10 mg/L. Effluent ammonia nitrogen is generally less than 10 mg/L. The minimum effluent concentration of ammonia nitrogen was less than 1 mg/L. The removal rate of total phosphorus was between 30-45%.
The Study of Dielectric Constant Inversion of Coconut Fiber/Gypsum Composite Based on the λ/4 Absorption Spectrum
Authors: Chu Qian Qian , Zhao Hui Chao , Hao Wan Jun , Yi Ying Ying , Dong Yi Feng , Yu Xin Dan
Published: September 2014

The measurement of the complex permittivity of big structure composite material has always been a key and difficulty in the preparation of electromagnetic functional materials. In this paper the average dielectric constant inversion of coconut fiber/gypsum composite in S band is studied based on λ/4 absorption spectrum. First the absorbing effects of the prepared coconut fiber gypsum composite materials are tested with method of flat reflection. Then the equivalent complex permittivity is inversed with the inversion theory. Further the experimental verification is preceded that the theoretical and experimental absorbing curves whose peak positions are respectively at 3.05GHz and 2.45GHz are quite matched. And the study shows that this method is scientific and effective, and it can provide technical support for the baroque electromagnetic functional composite materials.
Effect of Ferrous Sulfate to Improve UV-Protection Property of Cotton Fabric Dyed with Natural Indigo
Authors: Mongkholrattanasit Rattanaphol , Klaichoi Charoon , Mudchiew Orawan , Punrattanasin Nattaya , Sasivatchutikool Nuttanan , Rungruangkitkrai Nattadon
Published: September 2014

In the present study, cotton fabric has been dyed with natural indigo (Indigofera tentoria) in absence and present ferrous sulfate mordant by using post-mordanting and pad-batch processes. It was observed that with an increase in the dye concentration, the ultraviolet (UV) protection factor (UPF) values good for the cotton fabric. Cotton fabrics dyed with natural indigo showed greenish-blue shade. The fastness properties ranged from good to very good, level. The results confirmed that natural dyes from natural indigo with ferrous sulfate have potential applications in fabric dyeing and in producing UV-protective cotton fabrics.
Influence of Metal Mordants Concentration to Improve UV Protection and Fastness Properties of Silk Fabric Dyed with Purple Corn Cob
Authors: Mongkholrattanasit Rattanaphol , Klaichoi Charoon , Rug-Ngam Pannarai , Nakpathom Monthon , Paengsai Manat , Rungruangkitkrai Nattadon
Published: September 2014

In the present study, natural dye from cob of purple corn and various metallic salts have been used to identify the proper dyeing condition for attaining high quality natural dyeing along with imparting UV protection property to the dyed silk fabric. Silk fabrics dyed with cob of purple corn extract showed a violetish-pink shade, while those dyed with alum light violetish-pink shade colour. Silk substrates dyed with CuSO4 and FeSO4 gave a yellowish grey and violetish-gray colour, respectively. The fastness properties ranged from fair to good. The ultraviolet protection factor (UPF) values of silk fabric dyed with and without metal mordants ranged between very good and excellent.
Utilization of Longan Leaf Extract for Dyeing and UV Protection of Silk Fabric Using Pre-Mordanting Method
Authors: Mongkholrattanasit Rattanaphol , Klaichoi Charoon , Maha-In Kongkiat , Ariyakuare Kittisak , Chonsakorn Sakorn , Rungruangkitkrai Nattadon
Published: September 2014

Natural dye extracted from the longan leaves was applied to a silk fabric by an exhaustion dyeing process. The dyeing was conducted with and without metallic salt mordants using pre-mordanting. It was observed that with an increase in the dye concentration, the ultraviolet (UV) protection factor (UPF) values ranged between good and very good for the silk fabric. In addition, a darker color, such as that provided by a CuSO4 and FeSO4 mordant, gave better protection because of higher UV absorption. The results confirmed that natural dyes from longan leaf extract with metal mordants have potential applications in fabric dyeing and in producing UV-protective silk fabrics.
Biocomposite Based on Epoxy Resin and Jatropha curcas L. Microparticles
Authors: Valášek Petr , Müller Miroslav
Published: September 2014

Jatropha curcas L. is a plant with a high potential with many technologically useful part – seeds of the plant are the most utilized. A development of composite materials – biocomposites from renewable resource is an interesting and prospective tendency of a material engineering. A filler of the biocomposites can be from worse useful parts of plants which were primarily technologically processed for the purpose of gaining various commodities. As an example we can mentioned gaining of oil from Jatropha curcas L. seeds when it is possible to use rests cake from whole seeds. An experiment describes basic mechanical properties of an epoxy resin filled with microparticles of seed cakes (575 μm).
Study on Effort of Ultrasonic Treatment on Water Retention Value
of Pulp Fiber
Authors: Liu Quan Xiao , Li Dan Xi , Xu Wen Cai
Published: September 2014

Effects of ultrasonic processing conditions on water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber were discussed. Results showed that ultrasonic power and processing time have an significant impact on water retention value of three kinds of pulp, the effort of ultrasonic treatment temperature on water retention value of three kinds of pulp is less. The water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber, respectively, reach the maximum at power of 300W, 500W, 400W, and processing time of 60min, 120min, 60min.
Double Sealing of Ultrasonic Micro-Arc Oxidation Coating on Pure Magnesium by Nano-SiO2 Particles and SiO2 Sol Sealing Agent
Authors: Sun Wei Wei , Li Mu Qin , Gao Yan , Liu Jiang
Published: September 2014

A double sealing coating was prepared on ultrasonic micro-arc oxidized pure magnesium substrate by adding nano-SiO2 particles as additive in the plating solution and coating SiO2 sol as sealing agent. The bonding characters of SiO2 sol was analyzed by Fourier transformed infrared spectrometry (FTIR). The compositions and morphology of seal coating were characterized by energy-dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM), respectively. The corrosion resistance of the micro-arc oxidized and the sealed pure magnesium substrate were studied. The results showed that the Si content increased gradually with the addition of nano-SiO2 particles and the SiO2 sol sealing. It was benefit to create bioactive MgSiO3, which promoted the bone growth. The double sealed pure magnesium had a self-corrosion potential shifted positively by 60mV as well as a self-corrosion current density decreased by a half in a 3.5wt% NaCl solution, showing good corrosion resistance.
Analysis of Beach Protection Project Function in Middle Reaches of the Yangtze River
Authors: Wang Chang Hong
Published: September 2014

Beach protection band is the main common type of channel maintenance engineering in the lower-middle reaches of the Yangtze River After the building and water impoundment of three gorges project, the natural condition of water and sediment and evolution law of river channel under the dam beach are changed, the stream wise erosion and regulation will happen by long distance and periods. Through field investigation, data analysis, theoretical research and other means, the impact of beach protection structure under clear water scour are studied; the characteristics and applicable conditions of beach protection zone are also studied. The applicable conditions depend on engineering goals, A new understanding for beach protection engineering transformed from the defensive to offensive function are put forward, which provides control ideas and principles for the implementation of the follow-up project.
Cold to Architectural Environment Research and Countermeasures
Authors: Ouyang Hong Yu , Chen Bi Feng
Published: September 2014

Through the study on city environment problems in cold area, the deep exploration in architecture, landscape science, psychology, aesthetics, cultural customs perspective, learning environment design example of excellent foreign, summarizes the way to adapt to the environment design in cold region of the specific situation, so as to improve the cold city landscape quality, improve environment and cultural connotation aesthetic value, and maintain and adjust the balance of city ecosystem, conducive to social and economic development.
Drinking Water Chlorination and Adverse Public Health Outcomes in Algeria
Authors: Achour Samia , Chabbi Fouad , Guergazi Saâdia
Published: September 2014

Drinking water supplies continue to be a major source of human disease because many of them remain unsafe and vulnerable. The aim of this study was to investigate the levels of trihalomethanes formation and chemical and microbiological quality through four raw surface waters as well as finished tap waters. The seasonal changes on trihalomethane formation and concentration of organic precursors were examined. Results show that disinfection for Algerian drinking water reduces the risk of pathogenic infection but may pose chemical threat to human health due to high levels of by-products such as trihalomethanes, when the organic and inorganic precursors are present in water. The level of THM precursors vary between different catchment areas and between different water treatment plants, and seasonally. Such work may be interesting to help management strategies and to assist drinking water treatment plants in DBP control processes for increasingly impaired water sources.
Dynamics Features and Hazard of the Debris Flow in Sewanzu Gully in Heishui County of Sichuan Province
Authors: Huang Shuang , Chen Jian Ping , Wang Qing
Published: September 2014

The debris flow in Sewanzu gully was located in Heishui county of Sichuan province, which was 5.12 Wenchuan of sichuan earthquake severely disaster. It was large and very likely outbreak, which not only had posed a serious threat to the lives and properties of people, but also affected the reconstruction work going on smoothly. According to the basic features of the valley and the debris flow, the dynamic parameters,such as bulk density,flow rate,flow capacity and sediment flush-out were calculated.And then the hazard of the debris flow was evaluated quantitatively. The results could provide the basis for the governance and disaster prevention and mitigation of the debris flow gully.
Emergency Control Strategy for Unexpected Water Pollution Accidents in the Middle Route Open Channel of the South-to-North Water Diversion Project
Authors: Xue Tong Lai , Wu Hui Ming , Liao Wei Hong , Lei Xiao Hui , Xu Hao
Published: September 2014

This paper takes a typical channel passage in the middle route of the South-to-North water diversion project as an example to study emergency control strategies for unexpected water pollution accidents. A one-dimensional Saint Venant equation and water quality numerical model is developed, considering limitations such as the migration velocity of pollutants, water level fluctuation, and variations in the channel. Emergency control strategies for each gate are proposed for unexpected water pollution accidents and gate closing rules are established. Parameters such as the channel water depletion rate, stabilization time, water level fluctuation, and water quality are simulated under different control strategies in order to ensure the safe operation of water transport and to decide on the control strategy for unexpected water pollution accidents. Such studies can provide reference information for the development of emergency strategies in the middle route of the South-to-North water diversion project.
Effect of Humidity on the Thermal Stability of Red Pyrotechnic Composition
Authors: Shi Shuo , Zhao Lin Shuang
Published: September 2014

pyrotechnic mixtures are sensitivity with the influence of humidity and are susceptible to explosive decompositions. The aim of this paper is to provide thermal decomposition data under different humidity conditions. The method of TG-DSC simultaneous analysis has been used to study the thermal decomposition mechanism of a typical red pyrotechnic mixture. The kinetic parameters were calculated by kissinger method. The thermal stability is evaluated by decomposition peak temperature (Tm), mass loss (△m) and activation energy (E), which shows that the decomposition peak temperature and activation energy decreased obviously. Therefore, the thermal safety under humidity atmosphere become lower.
Model-Based Prediction Control for Photovoltaic/Thermal-Assisted Heat Pump Water Heating System
Authors: Tsai Huan Liang , Lai Li Wen
Published: September 2014

This paper presents self-sufficiency design for a photovoltaic/thermal assisted heat pump water heating (PVTA/HPWH) system by model-based prediction control methodology. Considering the effect of weather conditions on PVT characteristics, the reciprocal energy exchange of PVT evaporator and HPWH system could be well described by the proposed PVTA/HPWH model with better precision. Having the accurate model building, the power consumption of HPWH is self-sufficiently provided by PV electricity using a model-based prediction control methodology. Performance is evaluated through experimental measurement with a test rig of integrated PVTA/HPWH system of rated power 1 kWp under real climate conditions. The dynamic behaviors and performance analysis of the PVTA/HPWH system are conducted by theoretical and experimental analysis. The results have demonstrated the power autarky of the proposed PVTA/HPWH system with better performance.
Pollution and Hazard Evaluation of Oil Products
Authors: Feng Xing , Wu Wan Qing , Zheng Qing Gong , Zhang Shao Jun
Published: September 2014

Based on the evaluation index system of GESAMP and evaluation procedure about mixture mentioned in the Circ.512, the pollution and hazard evaluation model of oil products were established. According to the evaluation results, it can be found that the evaluation model established here is effective. The evaluation model can be used to quantitatively demarcate the pollution and hazard of oil products, which can provide theoretical support for shipping supervision of oil products.
Quantifying the Impacts of Beijing Subway on Energy Consumption and CO2 Emissions
Authors: Yu Miao
Published: September 2014

This paper estimates the impacts of Beijing Subway on energy consumption and CO2 emissions. The ASIF methodology is developed to estimate the emissions based upon passenger travel behaviors in Beijing, which is notably different from popular existing approaches that calculate emissions from vehicular population. This methodology enables policy analysts to quantify how different subway development strategies and patterns would affect about CO2 emissions.
Research on Capacity Modulation Mechanisms of Variable Composition Heat Pump
Authors: Zhang Li Na
Published: September 2014

In order to solve the contradiction of building heat pump characteristic curve of demand and supply of heat pump, put forward by changing concentration of mixture refrigerant capacity regulation to increase heat production purposes. The capacity control is analyzed, and verified by theoretical calculation and experiment. The results show that, the heat pump system can be obtained by changing concentration of mixture refrigerant to achieve the purpose of regulating capacity.
Research on Shitoukoumen Reservoir Ecological Dispatcher Optimization Model
Authors: Kong Fan Li , Yin Hua , Wang Ze Sen , Li Yu
Published: September 2014

In this paper, the Shitoukoumen reservoir of Yinma River basin has carried on the detailed investigation, use the over flow curve section of upstream and downstream the Shitoukoumen reservoir ecological base flow calculation, and sensitive water demand calculation. Considering the reservoir scheduling of economic benefits, ecological benefits and social benefits, and construct a complete set of reservoir scheduling optimization model, provides a theoretical basis for Shitoukoumen reservoir water dispatching
Effects of Initial Feed Speed of 1 Min on Rutile White Pigment Production via Short Sulfate Process
Authors: Liang An Bing , Huang Shuang Hua , Pu Hong , Tian Cong Xue , Chen Hua
Published: September 2014

Hydrolysis is one of the crucial steps in the product of titanium white pigment via sulfate process, and determines quality of the final products. Feed Speed have important effect to the quality and the numbers of seeds of early hydrolyzing. Using low concentration TiOSO4 as raw materials, fine rutile white titanium pigment was prepared by optimizing the key parameters of the hydrolysis process via the achromatic force and the level of whiteness of the samples. The samples were characterized by SEM, particle size distribution and pigment properties test. Resultes have shown that the feeding speed of 1 min is 1.1times to the speed after 1 min. In this conditions, the obtained titanium white pigment showed better pigment performance.
Study on Combined Operation of Ground Source Heat Pump and Ice Storage System
Authors: Li Chao , Su Hua , Gao Xiao Lu
Published: September 2014

In the present work, an operational air-conditioning system combined with buried pipe ground source heat pump and ice storage (ABI) was designed according to the loading characteristic of one office building. Additionally, the system running process and working mode together with the operational strategy on both designing day and non-designing day were discussed in this paper. To satisfy the cooling demand as well as cut down the operational cost, operating modes on different occasions must be planned reasonably to better control the system while running.
Study on Outdoor and Semi-Outdoor Thermal Comfort of College Campus in Central Taiwan
Authors: Sung Wen Pei , Hu Shih Tai , Zhao Yu Kuang , Wei Lei
Published: September 2014

Taiwan is a small island. Some of college campuses are very tiny with large hard pavement to cause un-comfortable outdoor environment. Most of faculty and students like to stay at classroom and use air-conditioner to establish comfort thermal environment. Thus, the outdoor and semi-outdoor thermal equipments are used to detect the parameters of weather. The test and analysis results show that hard pavements cause the un-comfortable outdoor comfort. Mean Radiant Temperatures of grass in summer is higher than the other pavement because that grass pavement is lack of moisture to causes bad outdoor thermal comfort. Therefore, the fine outdoor and semi-outdoor thermal comfort environment should consider the permeable pavement and grass with suitable moisture to cause better outdoor thermal environment and large arbores should be planted widely in campus to establish a better semi-outdoor thermal temperature in campus of the subtropical zone.
Effects of Pre-Adding Water Volume Ratio on Rutile White Pigment Production via Sulfate Short Process
Authors: Chen Hua , Huang Shuang Hua , Pu Hong , Tian Cong Xue , Liang An Bing
Published: September 2014

Using unconcentrated industrial TiOSO4 solution as raw material, rutile TiO2 white pigment was prepared via the self-seeded thermal hydrolysis sulfate process. The effects of pre-adding water volume ratio on the hydrolysis process and pigment properties of the TiO2 white pigments were investigated. The samples were characterized by XRD, particle size distribution and pigment properties test. The pre-adding water volume ratio had great effects on the quantity and active of seed crystal, hydrolysis process, eventually determined particle size distribution and its pigment properties. The optimized pre-adding water volume ratio was of 0.22. The as-prepared rutile white pigment was with appropriate particle size, narrow particle size distribution and good pigment properties.
Optimizing Irrigation Scheduling of Summer Corn (Zea mays l.) in a Coastal Saline Field, China
Authors: Chang Ting Ting , Shao Xiao Hou , Li Wei , Mao Xin Yu , Wang Wei Na
Published: September 2014

Field study was conducted to determine the optimum irrigation quantity and times of corn in 2010. Different irrigation treatments were set according to local farmers’ practices. Irrigation amounts of T1, T2, T3, T4, T5 and T6 were 225, 270, 337.5, 300, 360 and 450 mm, respectively. Irrigation times of T1, T2 and T3 were 3, and T4, T5 and T6 were 4. The results showed that soil salt decreased with the increasing of irrigation water amounts. The corn yield varied from 6560 to 8060 kg/ha2. The highest yield was obtained from T5. Aiming to get high corn yield, total water supply of corn crops was 865 mm. Irrigation water productivity (Wpi) was the highest (2.92 kg/m3) with T1, and the lowest (1.74 kg/m3) with T6.
Application of Relation Analysis in Evaluation and Optimization of Pile-Foundation
Authors: Dai Tao , Liu Xing
Published: September 2014

a list of criteria subject to selection and decision of pile-foundation is produced. Beside general process of traditional method, AHP and FAHP, relation analysis is introduced. Relation analysis could effectively consider the preference criteria, which is in accordance with investors. The relation analysis process is implanted in traditional decision theory by reasoned formulas and matrices. Last process is revealed smoothly and operability.
Case Analysis of Subsided Foundation Reinforcement of a University Infirmary in Collapsible Loess Areas
Authors: Wu Yi Qian , Zhu Yan Peng
Published: September 2014

The example which is selected in this engineering project is the hospital in Lanzhou University of Technology, the paper analyzed the reason that the foundation subsidence, and used reasonable and effective method on reinforcement. It hoped that the achievement can provide beneficial reference for handling the problem that foundation subsidence in collapsible loess areas.
Construction Stage Mechanical Performance Analysis of Long-Span Continuous Rigid Frame Bridge
Authors: Su Hua
Published: September 2014

Accurate simulation of construction process of continuous rigid frame bridge is a foundation to make a bridge built accurately. Based on the suit iteration method, this paper used MIDAS to built a 3D finite elements model, the internal force and deformation results of each construction stage was obtained. This study provided a good theoretical reference for the control of long-span continuous rigid frame bridge construction..
Discussion of the Measurement in the Construction of Extra Large Bridge
Authors: Gui Fang Ru
Published: September 2014

Yihe River No. 2 extra large bridge is taken as an example in this paper, from the establishment of control network, the pile foundation to the lofting of caps and other structures, this paper introduces the measurement methods used in the extra large bridge construction process, and how to assure the accuracy of bridge construction in the measurement as well, which provides reference for similar projects.
Dynamic Analysis of Nonlinear Vibration Isolation System Based on Flexible Foundation
Authors: Li Shu Ying , Huo Rui , Cui Xing Ke , Liu Cui Ping , Zhang Dao Kun
Published: September 2014

In this paper,a general dynamic model of the isolation coupled system which is composed of isolation object,nonlinear vibration isolation support,and flexible foundation is established,calculated method of applying vibration power flow to analyze isolation effectiveness is studied.Further more,as an calculation example,a air spring vibration isolation system of HS-700 engines is numerically simulated.Designs several low-frequency nonlinear vibration isolators and analyzes its vibration isolation effect.It discusses the effect of the vibration isolator parameters on the transmitted power flow of the system.The results provide a theoretical basis for the optimized design of nonlinear vibration isolation system.
Fabrication and Characterization of Cellulose Acetate Nanofibers
Authors: Anisah Zainal , Sultana Naznin , Abdul Kadir Mohammed Rafiq
Published: September 2014

In this study, CA fibers were fabricated using electrospinning technique with the mixture of acetic acid/acetone as the solvent system with the ratio of 3:1. The morphological structure of the fibers obtained was observed using scanning electron microscope (SEM). The SEM results showed that 10% of CA produced beads only, 12% of CA produced spindle beads with few fibers, 13% of CA produced fibers with few beads and 14% w/v concentration of CA produced continuous and smooth ribbon-like fibers with average diameter of 199.23nm.
Fracture Characterization Technique in Reservoir Simulation of Vertical Fractured CBM Wells
Authors: Liu Ling Li , Xia Zhao Hui , Zhao Chao Bin , Zheng Ke Ning , Duan Li Jiang , Zhang Ming , Cui Ze Hong
Published: September 2014

The typical characteristic of stoning band coal seams is of multi-layers and low permeability, so fractured vertical well is usually used in the CBM development of this kind of coal seams. As far as the reservoir simulation of vertical fractured CBM wells is concerned, the fracture characterization technique is of great importance. Taking the vertical fractured pilots in F coal measures of Bowen Basin in Australia as an example, this paper will illustrate the application of fracture characterization technique in reservoir simulation. Its highlight is to scientifically characterize the shape of hydraulic fractures and quantitatively describe the reservoir permeability improvement after fracturing through “MULTX” of grid conductivity with Tartan grid model, thereby determining key parameters for the reservoir simulation of fractured vertical wells and providing a scientific basis for establishing CBM development plan and forecasting ultimate recoverable reserves.
A Study Designed to Improve High-Temperature Thermal Stability of SiC Fiber
Authors: Ma Rong Pin , Cheng Xu Dong , Ye Wei Ping
Published: September 2014

In a high-temperature environment, the pyrolytic reaction of the SiC fiber destroyed the chain structure of the fiber and cause fiber apparent weightlessness, the surface and internal of fiber produce porous structure defects. In order to improve high-temperature thermal stability of SiC fiber that the reunion composite powder (CP) of perlite and nanozirconia was prepared by atomized granulation technology, and the CP is sprayed the surface of SiC fiber by plasma spraying technology. The SiC fiber was completely ablation at 1200°C for 3h. On the contrary, the spraying CP of fiber is not affected, showing favorable high-temperature stability. The surface appearance of the fiber was analyzed by means of SEM, and the flame temperature Spray Watch.
Nonlinear Stability Analysis of Long-Span Suspension Bridge Cable Tower
Authors: Luo Xu , Fu Xin Sha , Gu Li Xiong , Cai Lu Rong
Published: September 2014

The cable tower is the bearing component of long-span suspension bridges, and its structure is very high and bear large force, which determines the stability and is the key of safety control. As for the height of the main tower of a long-span suspension bridge up to 195.3 m, the finite element software ANSYS is used to establish a three-dimensional finite element model (FEM), and the effects of geometric nonlinearity and material nonlinearity on the stability of the main tower are analyzed. The calculation results show that geometrical nonlinearity and material defects have significant influence on the main tower stability, and the nonlinear stability should be considered under wind load in the design calculation.
Numerical Analysis on Anti-Seismic Dynamic Response of Rectangular Caisson Foundation
Authors: Wang Lin , Shao Guo Jian , Hu Feng
Published: September 2014

Based on the software FLAC3D, we set up the dynamic calculation model. By applying the horizontal (x direction) seismic waves at the bottom of the model, we simulate the earthquake action to the caisson foundation and the soil body around it and obtain the time-history curves of the acceleration, the velocity and the displacement of the key points in the model in x direction. We also obtain the rotation angle time-history curve and the relative displacement time-history curve of two key points at the bottom of the caisson foundation. Through the analysis on these curves, we know the maximum values of the acceleration, the velocity and the displacement of the top portion of the caisson foundation are 393.6 cm/s2, 75.9 cm/s, 28.5 cm, and the maximum rotation angle of the caisson foundation is 0.08°. We sure the bond of the caisson foundation bottom and the below soil layer is firm and the relative displacement is only 1.3 mm. Looked from the overall,the anti-seismic property of the caisson foundation is good. The above results provide a reliable basis for the future research on the dynamic response of caisson foundation.
Of the Water Gate on the Ancient City Wall of China
Authors: Li He Qun , Wu Yan Li
Published: September 2014

On the ancient city wall of China, the water gate used to been built. Probably before the Tang Dynasty, it always took the shape of hole in order to drain and prevent others from entering city. From the Song Dynasty on, for the sake of navigation, the majority of water gates became the sluice gate that could go up and down.
On the Construction Technology and Quality Control of Vacuum Combined Surcharge to Foundation Reinforcement
Authors: Liu Ze Jun , Guo Ya , Yuan Qi Wang , Chen Bao Hai , Gu Xiang Yang , Hu Zhi Jun
Published: September 2014

The vast area of distribution of soft clay with poor engineering property of our country, on the soft clay subgrade treatment by drainage consolidation method. As a kind of drainage consolidation method, vacuum preloading consolidation of soft soil foundation in recent years have been widely used, and achieved very good engineering and economic benefits. The theory research about vacuum preloading behind the engineering practice, restricted the further development of the technology and engineering application, it is necessary to make a systematic study. Through the comparative analysis of the test results, the vacuum causes soil consolidation, on this basis, the surcharge preloading and vacuum preloading contrast of the vacuum preloading mechanism, analyzes various factors foundation reinforcement finally strengthening effect by vacuum preloading.
Parameter Study and Shear Capacity of Plated RC Beams by Nonlinear Finite Element Method
Authors: Lin Wen Shan
Published: September 2014

In this study, the numerical experiments are performed to determine the shear capacity of RC beams strengthened by external steel plate. The numerical parameters include plate dimension, plate curtailment, and thickness of glue. According to numerical results, the shear capacity equation of plated RC beam was modified by regress of experimental data, and compared with result of finite element predicting.