bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling and Experimental Studies of SO2 Absorption in Aqueous Ammonia Solution with Wetted-Wall Column
Authors: Peng Jian , Zhang Deng Feng , Yang Chao Qin , Tao Jun
Published: July 2014

In a wetted-wall column of pilot-scale sulphur dioxide removal efficiencies were measured at 20°C and atmospheric pressure with aqueous ammonia solutions as the scrubbing liquid for different sulphur dioxide inlet concentration in the range of 1000-3000 mg/m3. A mathematical model with the effects of a chemical enhancement factor and sulfite concentration in the liquid phase developed to interpret laboratory experiments was adapted and the calculated values were in reasonable agreement with the experimental values. It appears that this model can provide good predictions of the absorption performances of industrial columns and be helpful to design scrubbers for SO2 abatement with aqueous ammonia solutions.
Design of Hydraulic Experimental System of Oil Drilling and Production
Authors: Cai Yong Peng , Jia Guang Zheng , Ren Yong Liang , Chen Shi Peng
Published: July 2014

Designed a set of hydraulic experimental system for testing some performance parameters of oil drilling and production equipments and demonstrating its functions and principles. This system provided hydraulic environment for pumping unit, ESP (Electric Submersible Pump), well control devices, drilling and workover experiments, collected and analyzed experimental data, provided an important platform for the research and development of oil drilling and production equipments and experiment teaching. The functions and principles of hydraulic system’s components are introduced, and some main components are selected and designed in the system.
Graphene Oxide Prepared via Ultrasonic Assisted Chemical Oxidation Method and its Fluorescence Property
Authors: Cui Yan Qun , Wu Ze , Dong Li Min , Li Qin , Han Zhi Dong
Published: July 2014

Graphene oxide (GO) was prepared via ultrasonic assisted chemical oxidation method. Contrasting with modified hummers method, GO prepared by ultrasonic assisted chemical oxidation method showed thinner flakes, the interlayer spacing increases. The emission spectra of the GO showed a similar excitation-dependent feature with the strongest peak (552 nm) excited at 477 nm.
Finite Element Analysis of the Stiffness and Strength of Large Power Plant Condenser
Authors: Yang Ya Bin , Lai Xi De , Chen Xiao Ming , Zhou Xiang , Lei Ming Chuan , Song Bing Jie
Published: July 2014

Using finite element method to simulate complex operations of the whole condenser under extreme water pressure, this paper aims at predicting the strength and stiffness of the condenser components under extreme pressure conditions. The results show that the max stress of the components is less than the allowable stress, and the max deformation is also within the permitted scope. The results will provide necessary reference for the further optimization design of condenser.
Design and Research of Offshore Drilling Platform Electric Power System
Authors: Chen Ping Liang
Published: July 2014

In order to design a reasonable safe power control system and realize the automated management of offshore drilling system, this paper analyzes the electric system features and grid configuration of drilling platform; power station design and short circuit calculation; electrical power system electroplax selection. This system adopts oceanographic engineering software EDSA for construction and parameter input and conducts short-circuit calculation for modeling and simulation. The electric system design and short-circuit calculation can be examined by simulation result and real platform.
Exploration on Automatic Welding Methods for Battery Pack of New Energy Automobiles
Authors: Yang Jian Dong , Yan Hui , Tian Chun Lin , Li Jing
Published: July 2014

This article presents some research of welding methods according to battery pack working requirements of new energy automotive, for meeting the battery pack processing of new energy automotive in theory , single-sided duplex parallel resistance mass spot welding process is proposed.
Finite Element Analysis for the Collapse Accident of a 110kV Transmission Tower
Authors: Zhu Yi , Li Bo , Wang Hao , Li Kun
Published: July 2014

Put the finite element analysis of line tower coupling modeling to the collapse of a 110 kV line straight-line tower, study the effect of strong wind on transmission tower and wire. The results show that under the action of strong wind, the material specification selected by the part of the rods on the type of tower is lower, cross section is smaller, the principal material of tower will be instable and flexional under the compression, resulting in tower collapsed.
Impacts of Diverting Potential Difference on Armored Cables in Substations
Authors: Chen Li
Published: July 2014

To reduce the interference on communication equipments caused by transient electromagnetic field of switching operation, the shields of cables are connected to grounding grid on both sides in the substations grounding designs. However, when the substation is stroke by lightning or shorted, the huge potential difference called diverting potential difference between the cable core and the shield is generated, which can easily destroy insulation of cables, even producing electrical tree or dielectric breakdown in insulation material. Moreover, the large current flowing through the shield of cables will cause personnel accidents and equipment damages. In this paper, the electric model of cables is established using grounding grid simulation software—CEDGS. The way diverting potential difference changes influenced by grounding grids, soil and other parameters is analyzed. Measures to reduce diverting potential difference are proposed for providing a theoretical basis of construction in practice.
Modal Analysis of Vibration and its Program Development in Power Transformer Core
Authors: Han Fang Xu , Li Yan , Sun Xin , Wang Huan
Published: July 2014

In this paper, based on the modal analysis combined with power transformer product structure, using the empirical formula calculation method and finite element simulation analysis software calculates the natural vibration frequency of power transformer core, respectively, while making the VB language as a tool to develop the calculation software of natural vibration frequency of power transformer, provides a strong support for product tenders, design and optimization.
Numerical Calculation of Short Circuit Electromagnetic Force in Isolated Phase Bus
Authors: Kari Tusong Jiang , Abuduwayiti Xi Wang , Ma Ming
Published: July 2014

Short circuit electromagnetic forces are one of the most important factors in design and operation of buses. 2D infinite element models are set up with ANSOFT for isolated phase buses, simulating with transient method and calculating short circuit electromagnetic force taking eddy effect and proximity effect into account. The result reveals that the maximum electromagnetic force under short circuit condition is a periodic function of current phase angle.
Mechanical and Thermal Properties of Phenolic Foams Reinforced by Hollow Glass Beads
Authors: Zuo Yu Xin , Yao Zheng Jun , Zhou Jin Tang
Published: July 2014

Hollow glass beads / phenolic foam composites were prepared by molding method. The influence of HGB on thermal performance and mechanical properties of phenolic foams were investigated using thermal conductivity measurement, thermogravimetric analysis (TGA) and compression tester. The results show that the addition of hollow glass beads lead to a significant improvement in the compressive property of phenolic foams, with the compressive strength reaching the maximum adding 10% HGB and HGB pretreated by silicane coupling agent further enhance the compressive property. FT-IR spectroscopy shows the reaction between alcohol-OH groups on the surface of HGB and methoxy (-OCH3) groups on silane coupling agent (KH560). The morphology indicates the average cell size decreases with HGB content increasing up to 10%, and again the cell size of foams reinforced by pretreated HGB are better. Addition of HGB improved the thermal stability property of phenolic foams, due to the porosity was mainly responsible for thermal conductivity property of phenolic foams, so HGB filled materials achieved higher thermal conductivity.
Measurement Studies on Superhydrophobic Materials
Authors: Devasahayam Sheila , Yarlagadda Prasad
Published: July 2014

Superhydrophobicity is directly related to the wettability of the surfaces. Cassie-Baxter state relating to geometrical configuration of solid surfaces is vital to achieving the Superhydrophobicity and to achieve Cassie-Baxter state the following two criteria need to be met: 1) Contact line forces overcome body forces of unsupported droplet weight and 2) The microstructures are tall enough to prevent the liquid that bridges microstructures from touching the base of the microstructures [1]. In this paper we discuss different measurements used to characterise/determine the superhydrophobic surfaces.Keywords: Wettability, contact angle, contact angle hysteresis, contact time, surface roughness, drag reduction measurements, morphology, surface friction, Reynolds number
Research on Nitrogen Control Technology of High-Pressure Bottle Steel
Authors: Jun Chen
Published: July 2014

Nitrogen content of the high-pressure bottle steel was high and with big fluctuation, it is difficult to control. SO, investigation on nitrogen content of the all steelmaking process is carried out. Results of the investigation indicated that nitrogen content of the aimed steel was high, nitrogen absorption was mainly happened during tapping and in the course of after refining to before casting。And then nitrogen control measures such as low-nitrogen steel melting technology, optimization of deoxidization, protective casting technology is raised. After that nitrogen content of the aimed steel was reduced and nitrogen absorption during tapping and in the course of after refining to before casting was effectively controlled, nitrogen content of the finished steel was stably controlled in 50×10-6, the effect of nitrogen on property of steel is reduced.
Studying on a New Kind of Grouting Material and its Application
Authors: Wang Li Wei , Feng You Li , Li Jian Lin , Duan Li Hong
Published: July 2014

Mine water-irruption is the second to gas explosion of major security problems. In order to ensure coal safty, the coal bed needs to be solidified. This paper design a new kind of grouting material, which is composed of coal fly ash and montmorillonite, these two grouting materials separately according to a certain proportion with pure cement material on the site grouting test and compare the compressive strength of the stones of the body and the size of the diffusion radius, and compare the grouting materials with pure cement materials. The experiment shows that the new grouting material has good property and the economic significance.
Characteristic of Interface Crack Propagation in Dissimilar Weld Joints
Authors: Wang Wei Bing , Xue He , Yang Fu Qiang , Zhou Xu Sheng
Published: July 2014

The propagation behavior of crack with different initiation position is affected by the constraint effect differences in dissimilar weld joints mechanical heterogeneity. The ductile fracture model of interface crack in dissimilar weld joints was built by adopting extended finite element method; the propagation characteristic of interface crack was summarized. The results indicate that the strength mismatch of materials at sides of interface will increase trend of crack advancing into the relative soft material which has lower yield strength and lower hardening exponent.
Electrochemical Study of Corrosion Inhibition on Copper in Base Electrolyte by 1-Phenyl-3-Hydroxy-1,2,4-Triazole
Authors: Li Qi , Li Jian , Hu Ling Tong , Zhu Lei , Han Xiao , Tao Zhi Hua , He Wei
Published: July 2014

This paper presents the investigation of 1-Phenyl-3-hydroxy-1,2,4-triazole as a new green Cu corrosion inhibitor for Electronic Circuit Board in the base electrolyte (containing 60ppm chloride ions,0.54M H2SO4 and 0.88M CuSO4).The inhibition action was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS).The results show that the inhibition performance depends on the concentration of the inhibitor and the inhibition efficiency increases with increasing inhibitor concentration. Potentiodynamic polarization studies show that 1-Phenyl-3-hydroxy-1,2,4-triazole acts as the mixed-type inhibitor.The results obtained from EIS measurements are in good agreement with that obtained from potentiodynamic polarization.
Comparative Study of Physicochemical Properties of Compound Danshen Powders
Authors: Hu Peng Yi , Gong Ying Ying , Zhang Guo Song , Zheng Qin , Yue Peng Fei , Wu Zhen Feng , Yang Ming
Published: July 2014

Compare investigate physicochemical properties of coarse powder and four ultrafine powders of compound Danshen, and then to determinate particle size distribution for ultrafine powders. Surface morphology, bulk density , repose angle, the content of ethanol-soluble extract and water-soluble extract of compound Danshen powders were investigated. The content of salvianolic acid B, tanshinone IIA, tanshinone I, cryptotanshinone, notoginsenoside R1,ginsenoside Rg1 and ginsenoside Rb1 in compound Danshen powders were determined by HPLC. The results indicated that powder particle size decreased gradually with the extension of grinding time and finally into balance, but time was too long would make ultrafine powder easily gathered. Powder property results showed that ultrafine powders were worse liquidity and wettability. The contents in ultrafine powder D90≥38μm were increased with the decrease of the particle size, but when the particle size continued to decrease, the content would decline. Particle size of compond Danshen ultrafine powder should be controlled about 38 μm.
DEM Analysis of Lateral Ballast Resistance of Sleeper during Dynamic Stability Process under Different Vibration Frequency
Authors: Yan Bo , Hu Bin , Huang Ya Yu , Zhou Tao Yong
Published: July 2014

Railway ballast dynamic stability operations is an important work in the line maintenance and repair operations, the selection of dynamic parameter is usually dependent on field trials and practical experience, for lack of theoretical basis. This paper creates discrete element analysis model of railway ballast using the discrete element method, the numerical simulations are carried out to study the lateral ballast resistance during dynamic stability process. We focus on the influence of vibration frequency during dynamic stability process; an optimal vibration frequency of the simulation analysis is obtained and compared with the recommended vibration frequency of a product of a China Railway Large Maintenance Machinery Company, it is found that the two vibration frequencies are basically consistent. This result verifies the correct validity of the discrete element analysis model of railway ballast during dynamic stability process.
Modal Analysis Based on UG and ANSYS for Wide-Format Inkjet Printing Machine
Authors: Cao Ying Yu , Gong Hui Qi , Gao Peng
Published: July 2014

The wide-format inkjet printing machine is a typical electromechanical integration equipment, whose designing process is difficult,and it has high requirements for the design process and the reliability.ANSYS modal analysis is a modern analysis method for the dynamic characteristics,which is used to determine the vibration characteristics of the designing structure and the machine parts.3-D modeling software UG was applied for three-dimensional solid modeling of the wide-format inkjet printers.The vibration characteristics of the machine could be gotten by the ANSYS modal analysis of the model built in UG.The analysis result could be used to test whether the design agency would resonance with the environment ,resulting in further mechanism modification to ensure the system stability.
Theoretical Mechanics Analysis of Some Basic Technologies for Billiards Sport
Authors: Zhao Rong
Published: July 2014

The paper analyzes some basic technologies for billiards sport. The basis of the research is considering the billiards as a rigid body. Hence, the theory of rigid mechanics can be applied to discuss billiards sport. On the basis of analysis of basic form and mechanics principle for billiards sport, goal mechanical condition of elastic collision and the skill of jumping bar for billiard balls are technically analyzed. The analysis results displays that the billiard sport can be calculated from two aspects of translation and rotation. In addition, a greater angular velocity can accelerate the speed and shorten the horizontal distance in jumping bar.
Layered Geometric Nonlinear Shallow Shells for Variable Form Investigation
Authors: Stupishin Leonid U. , Kolesnikov Aleksander G.
Published: July 2014

Layered shallow shells based on rectangular plan variation form are considered. Middle surface of shells depends on the high of supporting arches, the boundary conditions, and the thickness. Form of shall variation on the critical force coefficient and stress of shell are investigate with the help of Bubnov-Galerkin method. The calculation method has done in the Maple program complex.
The Optimal Form of Shallow Shells of Revolution with a Small Flexible Stiffness
Authors: Stupishin Leonid U. , Emelyanov Sergey , Pereverzev Maksim U. , Moshkevich Maria L.
Published: July 2014

An important aspect of the theory of optimal design of shells is a question technology of determination of optimal forms of shells with numerical methods, based on the variation definitions. The distribution of effort in sloping shell of revolution optimal form, uniformly loaded with despens intensity is analyzed. The mathematical model of shell optimal form is based on the maximum principle of L.S. Pontryagin. The solution of the objective is numerically made in MathCad. The relations of the distribution of the longitudinal forces and moments along the radius of the shell is shown.
Natural Play Materials as Motivator for Health Restoration in Paediatric Ward of Nigerian Hospital
Authors: Wakawa Usman Bukar , Bin Said Ismail
Published: July 2014

In paediatric ward, children are exposed to new environment which can exposed them to psychological and emotional stress. The paediatric ward setting in developing countries like Nigeria, seldom provides an environment that has facilities for positive distraction. Understanding the importance of play activities as a result of natural play materials, will allow facilitators to provide space and materials for play activities in the ward. This study examines the effect of natural play materials as motivator in healthcare settings on the health restoration of paediatric patients. The study was conduct at paediatric ward of Abubakar Tafawa Balewa University Teaching Hospital Bauchi, using an observational qualitative design. The data were generated from photographic documentation of five paediatric patients for seven days. The data was analysed using deductive content analysis. The result indicates that the ward as play environment provides restoration for children, when the environment is organized to house patients with access to nature inclined elements. Such as play activities in the case of children, with quality standard of upkeep and concern. The organization of the ward to accommodate natural play activities alongside norms and protocol that provide a genuine atmosphere for restoration. This is as a result of the inherent play behavior associated with early and middle childhood children. Therefore natural play improves children ability to cope with hospitalization.
Research on Synthesis Technology of Polyester Diol Using Vacuum Melting Method
Authors: Zou Jian Guo , Liu Shi Ying , Cao Yong Yi , Zhang Zhi Hong
Published: July 2014

Using adipic acid, ethylene glycol and diethylene glycol as the main raw material, the polyester diol was prepared by vacuum melting method. The effects of the dosage of catalyst, the stuff molar ratio of diol and diacid, reaction temperature of the esterification reaction and other factors on the synthesis process of polyester diol were investigated. The optimal conditions of the polyester diol synthesis by vacuum melting method were determined as follows: the stuff molar ratio of diol and diacid 1.10:1, the dosage of catalyst 0.20‰ (the mass fraction of total amount of dicarboxylic acid and diols), the esterification reaction temperature 230 oC. Under such conditions, the esterification reaction time is 5.5 h to get qualified polyester polyol. Additionally, the structure characteristics of polyester glycol were studied by infrared spectrometer (FTIR) and thermogravimetric analyzer (TGA).
Infiltration Characteristics of Topsoil in Reclamation Farmland Filled with Yellow River Sediment
Authors: Shao Fang , Liu Dong Wen , Jiang Shu , Qiao Zhi Yong , Lin Shan
Published: July 2014

Infiltration is an important indicator of water and nutrient holding capacity of soil. Lap infiltration apparatus was used to measure vertical water infiltration process in the third year of Yellow River sediment filling reclamation. Five infiltration models were selected to fit the infiltration characteristic curves, analyzed the infiltration experimental results during 3 years of reclamation. The results showed that, the mean initial infiltration rate and mean stable infiltration rate of filling farmland in the third year were 17.06mm/min and 2.38mm/min, and were 8.81mm/min and 0.99 mm/min higher than that of the first year, 3.58mm/min and 0.39mm/min higher than that of the second year. It indicated that, infiltration rate of filling farmland increased significantly after cultivation due to the farming practices and roots development, and the role of soil microorganisms and small animals. Filling farmland has some self-recovery capabilities. In addition, Kostiakov model has better fitting effect than Mezencev model for both filling farmland and control farmland.
The Research on Correction Method of Capacitance Signal Drift for Drop Analysis System
Authors: Song Qing , Zhang Shi Hui , Qiao Ming Yang
Published: July 2014

In the fiber-capacitance droplet analysis system, some uncertain factors lead to the difference between measured value of the sensor capacitance and the actual value.In order to effectively solve the problem,this paper describes a drift correction algorithm.By measuring the no-load capacitance of sensor,this paper sets a capacitance correction factor to modify the real-time capacitance signal value.Theoretical analysis and experimental results show that after modified by the correction algorithm,capacitance measurement value reflects the nature of the droplet itself and is comparable.The initial capacitance value variance reduces from 0.047980133 to 0.000144091,improving the stability of the system and providing valid data for future study.
Multi-Body Dynamics Analysis of V-Type Diesel Engine Crankshaft
Authors: Wang Ran Ran , Xu Yan Ming , Teng Xian Bin
Published: July 2014

Based on the V-type diesel engine crankshaft system, the paper combined the finite element method (fem) and multi-body dynamics method together, made a virtual simulation analysis. First, by 3d software and finite element software to establish the multi-body dynamic models of the crankshaft, bearing and piston, then simulated the actual engine working condition, and got the data such as crankshaft acceleration, velocity and displacement by the multi-body dynamics simulation analysis. By calculation, the paper found that by using the combination of finite element and multi-body simulation method, can we effectively simulate the diesel engine crankshaft dynamics characteristics.
The Parameter Performances and Simulations of Nitrogen-Inflating Hydraulic Breaker Based on AMESim
Authors: Cen Yu Wan , Wu Liang , Ye Xiao Hua , Ye Ye
Published: July 2014

After analyzing the technology of hydraulic breakers at home and abroad, this paper develops a new nitrogen-inflating hydraulic breaker based on the pressure feedback. Its concrete structure, the working principle and the hydraulic system are discussed. Then the entire system is built and simulated by using AMESim software. Impact performances are studied when some factors such as feedback pressure, pipe length and flow rate are changed. With all the achievements mentioned above, it provides a theoretical foundation for a further understanding of the hydraulic breaker.
Reliability Analysis for CNC Machining Tools during Early Failure Period
Authors: Chen Wei , Jiang Bo , Jia Zhi Cheng
Published: July 2014

According to the plentiful early failure data collected on the spots of 50 CNC machining tools , FMECA method is used to analyze the main fault mode and facts which usually make a great possible impact on the reliability of these products during early failure period.We find out the fault positions and the ratios of the fault modes and fault causes. We further analyze the fault modes and fault causes which frequently arise in the subsystems and parts. Through the analyses of FMECA, we learn the weak links of CNC machining tools and provide bases for removing the products faults. Suggestions how to enhance reliability level of these products are proposed.
Importance Degree of Influencing Factors on Cloud Service Composition Flexibility Based on Bayesian Network
Authors: Zhang Kai , Xu Xuan Guo
Published: July 2014

In this paper, the cloud service composition flexibility and its influencing factors were analyzed. Because the cloud service composition has too many uncertainties, a Bayesian network model was built to analyze the importance degree of the influencing factors of cloud service composition flexibility, and then the key factors were identified. This paper offered the groundwork for the subsequent influencing factors monitoring and cloud service composition flexibility measuring.
Inhibition of Sodium Citrate on Aggregation and Sedimentation of Nanocalcium Oxalate Dihydrate Crystals
Authors: Xu Meng , Xue Jun Fa , Li Jun Jun , Wen Xiao Ling , Ouyang Jian Ming
Published: July 2014

Objectives: The effects of sodium citrate (Na3cit) on sedimentation and aggregation of calcium oxalate dihydrate (COD) nanocrystallites with a size of about 50 nm was studied in order to explore the mechanism of Na3cit to inhibit calcium oxalate stone formation. Methods: The influence of concentration of Na3cit (c(Na3cit)) on size, Zeta potential, aggregation, and sedimentation of COD nanoparticles in aqueous solution was studied using nanoparticle size Zeta potential analyzer and ultraviolet spectrophotometer. Results: In lowc(Na3cit) (< 0.8 mmol/L), the inhibition effect of Na3cit on aggregation and sedimentation of nanoCOD increased with the increase ofc(Na3cit); while in highc(Na3cit), COD was gradually dissolved by Na3cit. The former was due to the specific adsorption of citrate ions (cit3-) on COD surface, which made the absolute Zeta-potential increased, therefore inhibited the aggregation and sedimentation of nanocrystallites; the later was because the high concentration of cit3-made Ca2+ions dissociated from the crystal surface, leading to COD dissolution. Conclusions: Na3cit can inhibit the aggregation and sedimentation of nanoCOD in low concentration and dissolve COD in high concentration, indicating that Na3cit can inhibit the formation of calcium oxalate stones.
Preparation and Characterization of Dialdehyde Nanocellulose
Authors: Li Wei Gong , Xu Qing Hua
Published: July 2014

Dialdehyde nanocellulose (DANC) was prepared by periodate selective oxidation of secondary hydroxyl group of nanocrystalline cellulose (NCC). NCC and DANC samples were characterized by FT-IR, XRD and conductimetric titration. Aldehyde groups were introduced during the process of sodium periodate oxidation, which was confirmed by the FT-IR spectra. The aldehyde group content increased with the increase of sodium periodate. The crystallinity index (CrI) and crystallite size of the samples were continuously decreased with the increase of the oxidant.
Developing a Sensitive Reporter System for Monitoring of Pancreatic and Duodenal Homeobox Gene 1 (Pdx1) and Neurogenin 3 (Ngn3) – Mediated Transdifferentiation from Human Hepatic Cells into Insulin-Producing Beta-Like Cells
Authors: Xie Chao , Donelan William , Lu Shun , Yang Li Jun
Published: July 2014

It is well known that cellular differentiation is not a terminal process. Transdifferentiation is the conversion of one differentiated cell type to another. There are many examples of induced transdifferentiation between cell types by expression of ectopic transcription factors. Here we show that combined lentiviral expression of Pdx1 or Pdx1-VP16 fusion protein and Ngn3 can direct the transdifferentiation of hepatic cells into insulin producing cells. We showed that the Pdx1 or Pdx1-VP16 fusion protein and Ngn3 together synergistically increased transactivation for the insulin gene. This provides a useful model to study the transdifferentiation process.
A Method for the Determination of Atropine in Pharmaceutical Preparation Using CE-ECL
Authors: Xiang Qian , Yang Xiao Dong , Gao Ying
Published: July 2014

In this paper, a sensitive determination method for atropine based on end-column electrochemiluminescence of tris (2,2’-bipyridyl) ruthenium (II) detection is described. The conditions affecting separation and detection were investigated. Favorable ECL intensity of atropine was achieved in a solution consisting 5 mmol/L Ru (bpy)32+ and 50 mmol/L phosphate at applied voltage of 1.20V. The standard curve was linear between 1 and 20 μmol/L for atropine. The calibration equation and regression coefficients were: y = 128.38x−36.76 and R = 0.998 in terms of peak height response as a function of analyte concentration. A detection limit of 5×10−8 mol/L (S/N= 3) was achieved. The proposed method was applied satisfactorily to the determination of atropine in three pharmaceutical preparations.
Effect of Ginkgo Biloba Extract on Contractility Enhancement of Diaphragm of Rats with Type 2 Diabetes
Authors: Li Xu Sheng , Wu Ren Yan , Hu Ye
Published: July 2014

To investigate the effects of Ginkgo biloba extract (GbE) on the activities of energy metabolism enzymes and contraction capacity of diaphragm from type 2 diabetic rats. Forty SD mile rats were randomly divided into normal control group (n=10) and model group (n=30). Type 2 diabetes models were induced by feeding with high-sucrose-high-fat diet and intraperitoneal injecting 25mg/kg streptozotocin. 20 successful models were rearranged to two groups: diabetic group and GbE treatment group, 10 rats in each. Then the saline and 8mg·kg-1·d-1 of GbE were respectively intraperitoneal injected, once a day continuously for 8 weeks. Then diaphragm contractility was assessed using Peak twitch tension (Pt), Maximum tetanic tension (P0) and fatigue index (FI) in vitro diaphragm strip preparations. Cytochrome oxidase (CCO), lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) in diaphragm were detected and the varieties of diaphragm ultrastructure were observed. Compared with control group, Pt, P0 and FI in diabetic group decreased significantly (P < 0.01); the activity of CCO, LDH and SDH in the tissues was obviously reduced than those in control group (P < 0.01). The ultrastructure in diabetic group under electron microscope indicated that diaphragm mitochondrions swelled and degenerated. The above changes were inhibited by GbE. GbE can enhance contraction capacity of diaphragm from type 2 diabetic rats by increasing the aerobic oxidation capacity, glycolytic capacity and the function of respiratory chain.
Study on Degradation of Radix Isatidis Polypeptide in Artificial Gastrointestinal Environment
Authors: Nan Nan , Liu Xi Jing
Published: July 2014

Radix Isatidis is a traditional Chinese medicine for treatment of influenza and inflammation in China. In this paper, in order to study the degradation situation of Radix Isatidis polypeptide in artificial gastrointestinal environment, the SDS-PAGE (Sodium dodecyl sulfate-polyacrylamide gel electrophoresis) method was used to detect the degradation of Radix Isatidis polypeptide in artificial intestinal juice and gastric juice, and it showed that Radix Isatidis peptides could be degradated to different degrees. HPLC (High Performance Liquid Chromatography) was used to determine the change of peptides degradation, and it indicated that free amino acid levels did not change significantly. The result after degradation was also detected by BCA method, and it showed that there were still a large number of polypeptides in the liquid. From this experiment we can come to this conclusion that Radix Isatidis polypeptides in artificial gastrointestinal juice mostly degraded into a series of different molecular weight peptides.
Wireless Power Transmission System of Radio-Telemetry System for Physiological Parameters Detection
Authors: Jia Zhi Wei , Ren He Ran , Yan Guo Zheng
Published: July 2014

To deal with the power shortage of the implantable radio-telemetry system for animal physiological parameters dictation, a wireless power transmission system based on electromagnetic induction is proposed. The parameters of the couple coils are optimized considering the safety and stability of this power transmission, transmitting coil of rectangle section solenoid and three-dimensional receiving coil are selected. Experiments show that at least 150mW power could pick up on the load in a volume of Φ10.5 mm×11 mm with a transmission efficiency of 2.56%. Vivisection experiments verified the feasibility of the integrated radio-telemetry system based on this power supply technology.
Application of High-Efficiency Reverse Osmosis Technology in Reclaimed Water Treatment in Power Plants
Authors: Long Xiao , Zhu Qing , Wang Xiao Yi , Shi Jin Hong
Published: July 2014

Because of the poor quality of the operational water (urban reclaimed water) of one power plant in Hebei, China, a high-efficiency reverse osmosis (HERO) system with foreign patents is utilized for advanced treatment of the reclaimed water. The influence of the main factors (including the alkalinity and the suspended solid content of the feed water, the flux, and the pH of the concentrated water) on the performance of the HERO system were studied. The high alkalinity (high concentration of carbonate) of the feed water resulted in HERO scaling, and the low alkalinity caused the penetration of hardness through the weak acid ion exchangers and, therefore, also caused HERO scaling. The high suspended solid content of the feed water caused rapid decrease in the product flux of HERO. The low concentrated water flux also decreased the product flux. As the pH of the concentrated water became higher, the stability of the HERO operation increased. Based on the pH endurance of the membranes and the characteristic of the high-pH operation of the HERO system, the water production was basically stable when the pH of the concentrated water lay between 10.5 and 10.8. Affected by the ammonia in the reclaimed water, the pH of the product water was higher than that of the feed water. The pH of the feed water was higher than that of the concentrated water. When the pH of the concentrated water was above 10.8, the pH values were close to one another. The results of the chemical cleaning experiments indicated that hardness, phosphorus, ammonia, silicon dioxide, and iron ions were the main influencing chemical factors of HERO, in which the former three formed a sediment of magnesium ammonium phosphate, and the latter two formed an iron silicate sediment.
College Female Students’ Physical Health Evaluation Index Correlation Research Based on the PDCA Cycle Model
Authors: Shou Jie
Published: July 2014

With internet and computer abundantly available, most of college female students become “indoor woman”, immerse into network environment and ignore outdoor activities as well as physical exercise. The above phenomenon is the main factors that cause college female student’s physique drop. College female student self-good health is education department main control aspect .In order to get clear understanding of college female students group physical conditions, college would carry out physical health test to students every year. Based on learning some related quality management theory and the PDCA management model, this paper makes use of the principle component analysis to conduct discussion on China's college female students’ physique health test management mechanism design so as to further perfect current procedure of China's college female students’ physique health test work, improve the quality of management work, improve the college female students’ physique and truly reach the target for the college female students’ overall development.
The Risk Factors for Pediatric Care and Preventive Measures
Authors: Liu Li Bing
Published: July 2014

In pediatric care, self-awareness of care object whose cooperation degree of care is not high is weak, exacerbated by the drugs used, testing equipment and technical level of nurses, professional ethics and many other factors, the risk factors for pediatric care throughout the children are always admitted. Thus, it is necessary to strengthen understanding of the risk factors for pediatric care and take effective preventive measures. This article analyzes the major risk factors focused on pediatric care and presents preventive measures accordance with different types of risk factors, in order to control and eliminate the risk factors and avoid the risk of incidents, ensure the safety of children, and provide reference for maintenance hospitals and medical staff image.
Constructing of Low Carbon Ecological Index System for Planning: Liaobin New Town as an Instance
Authors: Yuan Jing Cheng , Chen Shi , Huang Mu Zi , Fang Lei
Published: July 2014

The paper takes Liaobin New Town Low-carbon Ecological Plan as the research object, and explores the constructing process of Liaobin New Town Low-carbon Ecological Planning Indicator System (LCEPIS), mentions construction principles and methods; Secondly by analyzing regional condition, it assures the main paradox of regional development and the core of low-carbon ecological plan; Thirdly it mentions construction methods of the research object, sets up indicator system upon the procedure of frame assembling, indicator picking, indicator quantifying and indicator weighted value confirming; thirdly it introduces the specific calculating method as the indicator system is assessed and applied; finally we obtain the main outcome: Liaobin LCEPIS, meantime gain sub-conclusions such as initial picking library, chosen indicator and weight of indicator, etc. The research method could guide how to construct a regional plan indicator system, and obtained result could be referenced for similar plan indicator system.
The New Technology of PV Power Generation System Based on Extremum Seeking Control
Authors: Shi Ji Ying , Zhang Kai , Zhang Yong Ge
Published: July 2014

A novel is based on a simplified two-diode model of photovoltaic (PV) module,which can more accurately predict the output characteristic of the solar cells I-U curve. On this basis, Aiming at promptness and stability tracking the maximum power point of the photovoltaic cells under the conditions of the constant temperature and light intensity, a novel control strategy based on sliding mode based extremum seeking control (SM-ESC) system for optimally tracking the maximum power point of the photovoltaic cells is proposed.To achieve higher control quality, an adaptive adjustment method is further presented on the basic of stabilizing conditions of SM-ESC system, avoiding complicated manually parameter adjustment.Thus photovoltaic system can quickly stabilize at the maximum power point, less volatile when tracking the optimum output curve. Simulation results show the effectiveness and validity of the control strategy and adjustment method proposed .
Effects of Geomembrance on the Contaminant Transport in Compacted Clay Liner System
Authors: Fan Jing Jing
Published: July 2014

An analytical model is established to predict the seepage performance of the liner system composed of a compacted clay liner (CCL) covered by a geomembrane (GM). The contaminant of Pb2+diffusing through the geomembrane is assumed to be a steady-state process. The liner systems with low leakage performance are usually utilized in the municipal solid waste landfills to prevent the contaminants of the leachate from polluting the groundwater and soil beneath the landfill. To investigate the seepage rate of the Pb2+in the liner systems of the landfill considering the effects of the geomembrance, the influence of the geomembrance on the seepage performance of the liner system is studied. Parametric analyses are conducted to study the effects of the thickness of GM and the number of defects in the GM on the leakage performance of the liner system. In conclusion, some suggestions for the design of the municipal solid waste landfills are proposed based on the analyses results.
The Higher Order Crack-Tip Fields for Anti-Plane Crack in Exponential Functionally Graded Piezoelectric Materials
Authors: Dai Yao , Chong Xiao , Li Shi Min
Published: July 2014

The near-tip fields of an anti-plane crack in functionally graded piezoelectric materials (FGPMs) are investigated. To make the analysis tractable as usual, the elastic stiffness, piezoelectric parameter, and dielectric permittivity of FGPMs are assumed to be exponential functions of x parallel to the crack. The boundary conditions on crack surfaces are assumed to be the stress free and electrically impermeable. The high order crack tip stress and electric displacement fields are obtained by the eigen-expansion method. This study possesses fundamental significance as Williams’ solution to homogeneous materials.
The Effects and Countermeasures of Low-Carbon Economy on China’s International Competitiveness of Industries
Authors: Hu Jian Bo
Published: July 2014

Contradiction between the environment and economic development have become increasingly prominent, high-carbon development model of the world economy is more difficult to maintain, low-carbon development has becomea strategic objective of all countries. Countries hold low-carbon technologies, the establishment of a green trade barriers, lack of core technology and our industry, lack of international competitiveness of exports facing enormous challenges. For this reason, the paper deeply analyzes the impact of a low-carbon economy on the international competitiveness of the industry and made a reasonable suggestions and strategies from both countries and companies on how to enhance the international competitiveness of industry.
Analysis of Data Center Power System
Authors: Song Hui , Wang Zhi Tan
Published: July 2014

Data center presented in this paper, has a high requirement on the power supply system, that needs emergency power supply, SVG compensation device, large diesel generator set, two lines of mains large capacity UPS and other electric equipments. And there are some differences between data center and conventional power system in many aspects,such as in the nature, quantity, the load requirements, the related electrical equipment configuration, load, power supply mode, connection,and so on.
Forecast of Energy Consumption and Carbon Emission of Urban Traffic by Using System Dynamics
Authors: Zhang Yi , Wan Li Juan , Zhang Li , Cheng Dong Xiang
Published: July 2014

In the future development of city, traffic acts a very important role, which not only support the modernization of city, but also offer more travel and transportation service for the increasing city population. Therefore, it is necessary to study the urban traffic, energy consumption and carbon emission based on System Dynamics. System Dynamics not only offer quantificational references and advice about city planning for the government, but also make people understand the present status of urban traffic and possible development trend of urban traffic under the influence of different policies. In this review, the energy consumption and emission of urban traffic, the development of System Dynamics and the advantages on solving urban traffic problems based on System Dynamics are introduced.
Study on Feasibility of Concentrated Activated Sludge Reflow of Biochemical Pool of Small-Sized Wastewater Plant
Authors: Guo You Cai , Chen Ying
Published: July 2014

Experimental research and engineering validation show concentrated activated sludge reflow stead of traditional reflow way still meets the national discharge standard, though the treatment efficiency of wastewater plant is slightly declined and further show concentrated activated sludge reflow process used in energy saving and consumption reduction of small-sized wastewater treatment plant is feasible.
Regional Water Resource Utilization Evaluation and Influential Factors Analyses
Authors: Wang You Ying , Hu Xiao Ping
Published: July 2014

Water resource, as a kind of important economic and natural resource, plays a vital role in sustainable development of society. Currently, global water resources situation is increasingly severe, especially in China. The water resource distribution in China is uneven with low efficiency and pollution problem. Based on a full analysis of research actuality in China and abroad, this article explores water use efficiency and input redundancy of 31 provincial regions in China for the year of 2011. Reasonable indexes are chosen to evaluate the efficiency based on advanced DEA for helping establishing future policies.
Some Ecological Problems of Development of Mineral Raw Materials in Amurskaya Oblast’
Authors: Krupskaya Lyudmila Timopheevna , Zvereva Valentina Pavlovna , Panfilov Oleg Olegovich
Published: July 2014

The paper considers some ecological problems of the gold-mining enterprise in Amurskaya Oblast’. The investigations have revealed the technogenic pollution of the soil-grounds, air basin, and vegetation under the action of the processing wastes. High concentrations of heavy metals were found in the soils and vegetation in the zone of influence of the plant processing heavy concentrates at a distance of 100 and more meters. They are 2 to 90 times higher than the background values practically in all directions from the technogenic object. High TM concentrations were found also in the soils of building zone. Using the innovation approach we have elaborated the measures for decreasing the pollution negative effect on the habitat. We propose a new way of reclamation of the lands disturbed by the wastes of the mineral raw material processing with the use of the mixed bark-compost of the forest industry wastes.
Characteristics of Heavy Atmospheric Particulate Pollution under Beijing Fog and Haze
Authors: Liu Jun Xiu , Yang Peng , Liu A Gu Da Mu , Liu Jie
Published: July 2014

Three consecutive severe traffic monitoring points collected in different atmospheric particulate pollution concentrations data during February 2014 in Beijing. The results show that the hourly mean concentration of PM2.5 often exceeded 200 ug/m3, with a maximum concentration of 300 ug/m3on Feb.22,2014. The hourly mean concentration of PM10 either exceeded 258 ug/m3.The concentration of PM2.5 and PM10 was significantly increased during haze events, especially PM2.5 concentrations increased gradually and a slight decline in the middle, then rise.
The High Resolution Sequence Stratigraphic Isochronous Framework in Threezhao Peripheral Zone
Authors: Na Zhang , Liu Chen Zhi , Li Peng
Published: July 2014

In detailed study on sedimentary characteristics of Fu Yang reservoir around Threezhao area, based on the theory of high resolution sequence stratigraphy of the base level cycle isochronous contrast, regard short-term base-level cycle as the minimum isochronous contrast comparing unit, this paper has carried on the fine high-resolution isochronous contrast of the reservoir in the studied area, and the high resolution[1] sequence division of different orders of base-level cycle of Fuyu oil layer and Yangdachengzi oil layer. The Fuyu reservoir is divided into one complete long-term base-level cycle and three complete medium-term base-level cycle; while Yangdachengzi reservoir is divided into a long-term base-level rise hemicycles and 3 middle-term base-level rise hemicycles. According to mud logging, well logging and core analysis data, the sands group stratified mark of the Fuyu reservoir has been determined.