bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluating and Quantifying the Climate-Driven Interannual Variability in Global Inventory Modeling and Mapping Studies (GIMMS) Normalized Difference Vegetation Index (NDVI3g) at Global Scales
Authors: Zeng Fan-Wei , Collatz G. , Pinzon Jorge , Ivanoff Alvaro
Published: August 2013

Satellite observations of surface reflected solar radiation contain information about variability in the absorption of solar radiation by vegetation. Understanding the causes of variability is important for models that use these data to drive land surface fluxes or for benchmarking prognostic vegetation models. Here we evaluated the interannual variability in the new 30.5-year long global satellite-derived surface reflectance index data, Global Inventory Modeling and Mapping Studies normalized difference vegetation index (GIMMS NDVI3g). Pearson’s correlation and multiple linear stepwise regression analyses were applied to quantify the NDVI interannual variability driven by climate anomalies, and to evaluate the effects of potential interference (snow, aerosols and clouds) on the NDVI signal. We found ecologically plausible strong controls on NDVI variability by antecedent precipitation and current monthly temperature with distinct spatial patterns. Precipitation correlations were strongest for temperate to tropical water limited herbaceous systems where in some regions and seasons > 40% of the NDVI variance could be explained by precipitation anomalies. Temperature correlations were strongest in northern mid- to high-latitudes in the spring and early summer where up to 70% of the NDVI variance was explained by temperature anomalies. We find that, in western and central North America, winter-spring precipitation determines early summer growth while more recent precipitation controls NDVI variability in late summer. In contrast, current or prior wet season precipitation anomalies were correlated with all months of NDVI in sub-tropical herbaceous vegetation. Snow, aerosols and clouds as well as unexplained phenomena still account for part of the NDVI variance despite corrections. Nevertheless, this study demonstrates that GIMMS NDVI3g represents real responses of vegetation to climate variability that are useful for global models.
Measuring Center of Pressure Signals to Quantify Human Balance Using Multivariate Multiscale Entropy by Designing a Force Platform
Authors: Huang Cheng-Wei , Sue Pei-Der , Abbod Maysam , Jiang Bernard , Shieh Jiann-Shing
Published: August 2013

To assess the improvement of human body balance, a low cost and portable measuring device of center of pressure (COP), known as center of pressure and complexity monitoring system (CPCMS), has been developed for data logging and analysis. In order to prove that the system can estimate the different magnitude of different sways in comparison with the commercial Advanced Mechanical Technology Incorporation (AMTI) system, four sway tests have been developed (i.e., eyes open, eyes closed, eyes open with water pad, and eyes closed with water pad) to produce different sway displacements. Firstly, static and dynamic tests were conducted to investigate the feasibility of the system. Then, correlation tests of the CPCMS and AMTI systems have been compared with four sway tests. The results are within the acceptable range. Furthermore, multivariate empirical mode decomposition (MEMD) and enhanced multivariate multiscale entropy (MMSE) analysis methods have been used to analyze COP data reported by the CPCMS and compare it with the AMTI system. The improvements of the CPCMS are 35% to 70% (open eyes test) and 60% to 70% (eyes closed test) with and without water pad. The AMTI system has shown an improvement of 40% to 80% (open eyes test) and 65% to 75% (closed eyes test). The results indicate that the CPCMS system can achieve similar results to the commercial product so it can determine the balance.
De Novo Transcriptome Sequencing in Trigonella foenum‐graecum L. to Identify Genes Involved in the Biosynthesis of Diosgenin
Authors: Vaidya Kanak , Ghosh Arpita , Kumar Vinay , Chaudhary Spandan , Srivastava Navin , Katudia Kalpesh , Tiwari Tanushree , Chikara Surendra K.
Published: August 2013

Trigonella foenum‐graecum L. (fenugreek) is a viable alternative for production of diosgenin because of its shorter growing cycle, lower production costs, and consistent yield and quality. We studied de novo transcriptome analysis along with the diosgenin pathway in Trigonella foenum‐graecum and identified the genes responsible for diosgenin biosynthesis. The GMV‐1 variety of Trigonella foenum‐graecum has been used in the present study for transcriptome analysis by sequencing messenger ribonucleic acid (RNA) with a SOLiD 4 Genome Analyzer. Deep sequencing data of the transcriptome was assembled using various assembly tools along with functional annotation of genes, and pathway analysis for diosgenin biosynthesis was deciphered. A total of 42 million high quality reads were obtained. De novo assembly was performed using Velvet at different k‐mer, Oases, and CLC Genomics Workbench, which generated 20,561 transcript contigs. CAP3 was used to reduce the redundancy of contigs obtained through these assemblers. A total of 18,333 transcript contigs were functionally annotated. Kyoto Encyclopedia of Genes and Genomes pathway mapping showed that 6775 transcripts were related to plant biochemical pathways including the diosgenin biosynthesis pathway. The large number of transcripts reported in the current study will serve as a valuable genetic resource for Trigonella foenum‐graecum. Sequence information of the genes that were involved in diosgenin biosynthesis could be used for metabolic engineering of Trigonella foenum‐graecum to increase diosgenin content.
Association Mapping and Nucleotide Sequence Variation in Five Drought Tolerance Candidate Genes in Spring Wheat
Authors: Edae Erena A. , Byrne Patrick F. , Manmathan Harish , Haley Scott D. , Moragues Marc , Lopes Marta S. , Reynolds Matthew P.
Published: August 2013

Functional markers are needed for key genes involved in drought tolerance to improve selection for crop yield under moisture stress conditions. The objectives of this study were to (i) characterize five drought tolerance candidate genes, namely dehydration responsive element binding 1A (DREB1A), enhanced response to abscisic acid (ERA1‐B and ERA1‐D), and fructan 1‐exohydrolase (1‐FEH‐A and 1‐FEH‐B), in wheat (Triticum aestivum L.) for nucleotide and haplotype diversity, Tajima's D value, and linkage disequilibrium (LD) and (ii) associate within‐gene single nucleotide polymorphisms (SNPs) with phenotypic traits in a spring wheat association mapping panel (n = 126). Field trials were grown under contrasting moisture regimes in Greeley, CO, and Melkassa, Ethiopia, in 2010 and 2011. Genome‐specific amplification and DNA sequence analysis of the genes identified SNPs and revealed differences in nucleotide and haplotype diversity, Tajima's D, and patterns of LD. DREB1A showed associations (false discovery rate adjusted probability value = 0.1) with normalized difference vegetation index, heading date, biomass, and spikelet number. Both ERA1‐A and ERA1‐B were associated with harvest index, flag leaf width, and leaf senescence. 1‐FEH‐A was associated with grain yield, and 1‐FEH‐B was associated with thousand kernel weight and test weight. If validated in relevant genetic backgrounds, the identified marker–trait associations may be applied to functional marker‐assisted selection.
Single Nucleotide Polymorphism Genotyping for Breeding and Genetics Applications in Chickpea and Pigeonpea using the BeadXpress Platform
Authors: Roorkiwal Manish , Sawargaonkar Shrikant L. , Chitikineni Annapurna , Thudi Mahendar , Saxena Rachit K. , Upadhyaya Hari D. , Vales M. Isabel , Riera‐Lizarazu Oscar , Varshney Rajeev K.
Published: August 2013

Single nucleotide polymorphisms (SNPs) are ideal molecular markers due to their higher abundance. Although several types of genotyping platforms for assaying large number of SNPs are available, in cases such as marker‐assisted selection, where few markers are required for genotyping a set of potential lines, high‐throughput SNP genotyping platforms (e.g., iScan or Infinium) may not be cost effective. In this scenario, GoldenGate assays based on VeraCode technology using Illumina BeadXpress seems to be the most cost‐effective platform. The objective of this study was to develop cost‐effective SNP genotyping platforms in chickpea (Cicer arietinum L.) and pigeonpea (Cajanus cajan L.). Two sets of SNPs, one each for chickpea (96 SNPs) and pigeonpea (48 SNPs), were developed and tested by genotyping 288 diverse genotypes from respective reference sets. The SNPs selected for the oligo pool assays had high transferability to crop wild relative species. The mean polymorphism information content value of assayed SNP markers was 0.31 and 0.32 in chickpea and pigeonpea, respectively. No unique pattern was observed in the chickpea reference set whereas two major groups were observed in the case of the pigeonpea reference set. The Illumina BeadXpress platform assays developed for chickpea and pigeonpea are highly informative and cost effective for undertaking genetic studies in these legume species.
Plasma glycerol during the acute post-exercise recovery period: influence of exercise intensity
Authors: Bloomer R.J. , Farney T.M.
Published: August 2013

Intensity of exercise can influence substrate utilization, with increasing intensity resulting in lower rates of fat oxidation and the reliance on carbohydrate as the preferred fuel. Fat oxidation (or more specifically, mobilization) can be assessed via the measurement of circulating glycerol, with most prior research focusing on aerobic exercise and measurements obtained during the actual exercise bout. The present study determined the degree of fat oxidation/mobilization by measuring plasma glyctierol concentrations during the one hour post-exercise recovery period following three difference exercise bouts. On four different days, exercise trained men (n=12; 23.7±1.1 years) either rested quietly or performed aerobic cycle exercise (60 min at 70% heart rate reserve), 60 s cycle sprints at 100% max wattage obtained during graded exercise testing (GXT) - a total of five, or 15 s cycle sprints at 200% max wattage obtained during GXT - a total of 10. Blood was collected before and at 1, 30 and 60 min post-exercise. Haematocrit and haemoglobin were measured to correct for changes in plasma volume. Glycerol was analysed in plasma and the area under the curve was calculated. Glycerol increased across time (P<0.0001) from pre-exercise (8.4±0.3 μg/dl) to 1 min (13.1±0.7 μg/dl), 30 min (11.3±0.6 μg/dl) and 60 min (9.1±0.5 μg/dl) post-exercise, with 1 min and 30 min post-exercise greater than pre-exercise and 60 min post-exercise (P<0.05). Area under the curve was greater (P=0.0004) for aerobic exercise (24.7±2.0 μg/dl/h), 60 second sprints (23.4±1.9 μg/dl/h) and 15 sec sprints (24.4±1.5 μg/dl/h), as compared to rest (15.3±0.8 μg/dl/h), with no differences noted between exercise bouts (P≯0.05). All exercise bouts increase circulating glycerol, with no differences noted between bouts. Although previous data indicate that low intensity aerobic exercise results in greater fat oxidation than high intensity exercise (when assessed during the actual exercise session), our findings suggest that high intensity exercise may result in similar fat oxidation/mobilization as compared to aerobic exercise during the acute post-exercise period.
Study of Wirebonding Loop Formation and Influencing Factors Based on Mechanical Mechanics
Authors: Li Qun Ming , Xu Xiao
Published: August 2013

Mechanical dynamics and mechanical kinematics analysis of the loop deformation are researched. Because of the complex mechanical dynamics relationship between capillary trajectory and loop profile, its difficult to study the process of wirebonding. Lo has proposed a linkage-spring model to simulate the process. This paper simulated the loop profile through linkage-spring model, and validated it by experiments. After that, the Taguchi method has been developed to characterize the various looping parameters. The studies show that the kink height has a strong influence on the loop height and the sagging height, the wire length is a critical factor to the deformation of the wire near the first bond.
Research-Based Single Chip Microcomputer Controlling of Throttle in 09-32 Tamping Machine
Authors: Dai Ming Hong , Feng Xiang , Xu Yan
Published: August 2013

The control system of 09-32 tamping engine in the original throttle motor is proposed a throttle motor control system which is based on the PICl8F4550 MCU controlling and the analog-to-digital conversion technology.The design scheme can simplify the circuit design and improve the systems reliability.
Modal Analysis on Tooth Ring Plate of Three-Ring Gear Reducer
Authors: Huang Qiu Bo , Li Xiu
Published: August 2013

Three-ring gear reducer is a parallelogram mechanism, when the crank and connecting rod collinear, it produces a impact force, this dead point impact force is a major cause of three-ring gear reducer to produce violent vibration. Creating the parameterized solid modeling of tooth ring plate by Pro/E software, and preceding the modal analysis of tooth ring plate through utilizing ANSYS software. It has provide reference for the structure optimization of tooth ring plate and for researching on vibration characteristics of three-ring gear reducer.
Research on Mechanical Design with Design and Implement of High-Frequency Excitation Signal Source in Eddy Current Testing
Authors: Zeng Wei Qin , Zhang Wei Min , Wang Shu Hao
Published: August 2013

How to control the stability of the electrical and mechanical system is the most important content in the study of mechanical and electrical design. This paper studies the design and implement of high-frequency eddy current testing excitation source system. Design of a high-frequency signal generating equipment based on MCU, DDS technology and transistor power amplifier technology. The equipment can be used to generate a stable signal with the frequency below 10MHz. It has some characteristics included adjustable frequency, stable output of frequency and amplitude. It can greatly improve the accuracy and efficiency of detection of the eddy current testing system.
The System Design of Granular Bulk Materials Continuous Conveyor Weighing Measurement
Authors: Zhu Jing Fei , Xu Shao Jie , Li Yong Wei
Published: August 2013

For continuous transportation of granular bulk materials measurement and weighing is important link in industrial and agricultural production, warehousing and product flows. Improve said heavy of precision and speed is the key of dynamic measurement, and traditional for the continuous delivery of materials weighing system can not meet the requirements of quickly weighed and measured accurately, while sometimes variable, and nonlinear and random, factors in actual process in the of interference, in order to overcome these factors on continuous conveying material measurement system of effect, this article based on RBF Neural network model for foundation made a dynamic clustering algorithm optimization strategy.By means algorithm calculated the center of the base function, further extended RBF Neural network constants from hidden layer to output layer , then using least-squares method calculates the weight matrix to determine the final network structure and main parameters. This article on measurement of dynamic process has simulation test research, and BP neural network for effect comparison, simulation results indicates that, based on RBF of neural network on continuous conveying bulk material measurement control system is more effective, and weighing accuracy and speed is improved, in order to achieve the continuous delivery of materials weighing process optimization control, and at the same time provides an effective way to solve the existing problems of this type of system.
Synthesis and Application of Carbon-Based Nanocomposites
Authors: Yu Shi Jun , Han Xu , Yu Da Wei , Chen Yan Ming , Wang Xiao Li
Published: August 2013

Lithium ion batteries have been considered as the most effective and practical technologies for electrochemical energy storage. To meet the demand for lithium ion batteries with high energy density and excellent cycle performance, numerous efforts have been devoted to the development of new electrode materials. Electrochemically active metal oxides have emerged as the most promising candidates for the anode materials in the next generation lithium ion batteries duo to their high theoretical capacities and natural abundance. However, the extremely high volume change induced by the alloying reaction with lithium in the bottleneck for the commercialization of these materials. To overcome these obstacles, carbonaceous materials are commonly introduced as matrices to absorb the volume changes and improve the structural stability of the electrode materials. Hence, the present article describes the synthetic pathway of carbon-coated nanomaterials and applications.
Research on the Concrete Performance in the Marine Environment
Authors: Song Yi Dan , Liu Juan Hong , Yi Fa Xing , Xu Bo , Ge Peng
Published: August 2013

This paper mainly studied effects of NaCl,MgSO4 soaking experiments,carbonation and freezing and thawing cycle on concrete intensity.The results show:When the concrete is completely soaked in chloride solution,the concrete of high slump of the same strength grade has high compressive intensity.With the improvement of the concentration of chloride ions solution,the chloride ion diffusion coefficient of concrete is increasing as well;for the structure in marine environment,low water-binder ratio and high mineral admixture can improve most of performances of concrete.
Synthesis, Characterization, and Photoluminescence of a Novel Eu-Containing Polymer Precursor: {Tris(acetylacetonate)5-acrylamido-1,10-phenanthroline}Europium(III)
Authors: Xu Cun Jin
Published: August 2013

A new europium complex, Eu (acac)3Aphen (where Hacac and Aphen stand for acetylacetone and 5-acrylamido-1,10-phenanthroline, respectively), was synthesized and characterized by elemental analysis, IR, UV and photoluminescence (PL) spectra. The ligand Aphen not only serves as an antenna ligand but also offers a functional group for polymer precursor. The room-temperature PL spectra of the europium (III) complex are composed of the typical Eu3+ red emission, assigned to transitions between the first excited state (5D0) and the multiplet (7F04). Compared to Eu (acac)2AA (where HAA is acrylic acid), Eu (acac)3Aphen exhibits greatly enhanced quantum efficiency (i.e., 14.1% vs 28.5%) and longer 5D0 lifetime (260 μs vs 568 μs).
Array of Fe3O4 Nanoparticles in PS-b-P2VP thin Films
Authors: Gao Xin Kang , Liu Jun , Wang Ting Hua , Li Xue , Zhang Xiao Kai
Published: August 2013

In this study, a method to generate arrays of Fe3O4 nanoparticles (MNPs) via block copolymer (BC) self-assembly was developed. A composite film of polystyrene-block-poly (2-vinylpyridine) (PS-b-P2VP)/MNPs was first prepared by spin-coating the PS-b-P2VP/MNPs mixed solution on a carbon substrate. After the composite film was annealed at high temperature for 2 days, it was found that the modified MNPs could be selectively incorporated into P2VP cylinders in PS-b-P2VP diblock copolymers and the P2VP cylinders were oriented parallel to the substrate. For a long time annealing (10 days), the P2VP cylinders become normal to the substrate and MNPs are located at the interface of P2VP and PS phases.
Effect of the Pore Fractal Dimensions on Absorption Ability in Superabsorbent Fibers
Authors: Chen Fei Ming , Zhu Xian Zhong , Yang Hui Xia
Published: August 2013

The pore fractal dimensions of PVA/PAA-AM blend superabsorbent fiber were calculated by box-counting method. The results indicate that the pore structures of superabsorbent fiber have obvious fractal characteristics. In addition, we have also studied the relations of AM ratio with other parameters. Calculation shows that the addition of appropriate amount of AM can increase the porosity of superabsorbent fibers and improve its absorption ability.
Microstructural Evolution and hardening of Subsurface of Mg-3Al-1Zn Alloy during Dry Sliding Wear
Authors: Li Chao , Liang Ce , An Jian , Yu Ming
Published: August 2013

Dry sliding tests were performed on as-cast AZ31 alloy using a pin-on-disc configuration within a load range of 5-360N at a sliding velocity of 0.8 m/s. Worn surface morphologies were examined using scanning electron microscopy. Wear mechanisms, namely abrasion, oxidation, delamination, thermal softening and melting, have been observed in different load ranges. Surface hardness, subsurface plastic deformation and worn surface temperature were used to characterize the microstructure evolution and hardness change in subsurface. The results reveal that in the lower load range of 5-120N, surface hardening originating from large plastic deformation plays the important role in keeping a mild wear, in the higher load range of 120-360N, surface softening originating from dynamic recrystallization and surface melting are responsible for severe wear.
Experimental Investigation of Low Velocity Impact and Residual Compressive Properties of Composite Laminates Based on AE
Authors: Yan Shi , Guo Ying , Lu Xia Mei
Published: August 2013

The low-velocity impact and residual compressive failure processes of composite laminate were investigated by the acoustic emission (AE) technique in this paper. The AE energy, amplitude, and the peak frequency were analyzed. At the same time, combining with the load-displacement curve varying feature, the compressive fracture processes were divided into different stages to deeply understand the damaged mechanisms of the composites. Results reveal that the behavior of AE parameters described well the fracture process of the composites.
Study on Mechanical Properties with Effect of Super Capacitor in Energy Feedback of Electric Vehicle Battery
Authors: Lou Hai Xing , Yao Wei
Published: August 2013

in order to study the mechanical properties of super capacitor in energy feedback of electric vehicle battery, a battery test platform has been developed. Through the platform, we designed and completed the experiment of absorption capacity of the impact current and the effect to energy recovery of super capacitor. The results indicate that the super capacitor makes the battery have longer buffer time from discharging to charging, greatly reducing the damage to the battery. Besides, with the help of super capacitor, it saves large energy in the start-stop cycle of the motor and the savings increases with the decreasing of the start-stop cycle. The mechanical properties make super capacitor have more applications in the field of electric vehicle.
Monodispersion Soot Particle Interference on NO2 Concentration Measurement Accuracy Using NDIR
Authors: Zhao Yan Jun , Cheng Shou Guang , Qu Bin
Published: August 2013

NDIR is one of the NO2 concentration measurement methods. The NO2 concentration can be figured out by measuring the attenuation of the infrared light intensity on the characteristic wavelength. But the infrared light intensity is also attenuated by the monodispersion soot particles because of the particles absorption and scattering. So the monodispersion soot particles can impact the NO2 concentration accuracy. The interference of the monodispersion particles is discussed in the paper. Simulation results show that the impact parameters on the NO2 concentration accuracy include the received scattering angle range, particle size and concentration. The solution method is brought out and NO2 concentration measurement accuracy can be improved.
Research on Mechanical Engineering with Innovative Design of Gantry Planer
Authors: Wang Chang Fa , Wang Feng Lan
Published: August 2013

The design for traditional gantry planer aims at its empty stroke and low work efficiency of the two fatal flaws in this paper. We adopted the structure innovation by mechanical design and designed the gantry planer bidirectional shaping turret. And the device is simple in structure and easy in manufacture. These make improved gantry planer remove empty stroke and change one-way shaping into two-way shaping. Thus the improved gantry planer can depress energy cost consumedly and improve production efficiency. This will broaden its market greatly in the machining industry.
Study on Electromagnetic Shielding Material Performance Based on the Status of the Test Method
Authors: Xiong Wang Ping , Wang Li Guo , Zhou Xian
Published: August 2013

Materials characterization techniques is the basis of the Materials Research in recent years, a variety of new electromagnetic shielding materials and absorbing materials the rapid development of new demands on the performance of this class of materials testing technology. At home and abroad with the determination of electromagnetic performance parameters more domestic research units used in different ways depending on the respective conditions, test results, there is a big difference. This article focuses on the test method of shielding effectiveness and microwave absorbing property of the material from the device, principles, conditions of use, frequency range, the pros and cons of the introduction and commentary.
Experimental Investigation of Tensile Damage Mechanisms on 3-D Braided Composites with AE
Authors: Yan Shi , Jiang Li Li , Li Dong Hua
Published: August 2013

In this paper, the fracture process of 3D four-directional carbon/epoxy braided composites with different braiding angles under the monotonic tensile loading were investigated by the acoustic emission (AE) technique. The AE cumulative energy, event rate, amplitude, and the peak frequency were analyzed. At the same time, combining with the load-displacement curve varying feature, the fracture processes were divided into different stages to deeply understand the damaged mechanisms of the textile composites. Furthermore, the fracture surfaces of the specimens were observed under optical microscopy. Results reveal that the behavior of AE parameters described well the fracture process in the 3D braided composites with different braiding angles, and the damage mechanisms of the composites can be successfully identified by AE characteristics.
Study on Mechanical Bearing Capacity with Tabu Search Algorithm for Multi-Vehicle and Multi-Cargo Loading Problem
Authors: Ren Chun Yu
Published: August 2013

This paper studies multi-vehicle and multi-cargo loading problem under the limited mechanical bearing capacity. Tabu search algorithm is an algorithm based on neighborhood search. According to the features of the problem, the essay centered the construct initial solution to construct neighborhood structure. Firstly, for the operation, 1-move and 2-opt were applied. Secondly, through utilizing Boltzmann mechanism of simulated annealing algorithm, it can also fasten the speed of convergence, and boost the search efficiency. Finally, the good performance of this algorithm can be proved by experiment calculation and the mechanical engineering examples.
Deformation Behavior and Dynamic Stress Response of High Railway Embankment under Cyclic Load
Authors: Du Yong Li , Lin Yu Liang , Yang Guo Lin
Published: August 2013

The deformation of railway embankment is strictly controlled to ensure the safety of train running. In order to study the engineering behavior of railway embankment, simulation analysis on railway embankment with height of 8 m was carried out. Dynamic loads with amplitudes of 0~50 kPa and 0~100 kPa were imposed. The deformation behavior and dynamic stress response of embankment were studied. The results show that the embankment presents attenuation effect on dynamic stress. The static earth pressure near the top of embankment is enhanced, and the static earth pressure at the bottom of embankment is released. The increase of train load will change the failure mode of embankment. The deformation mode of embankment is in subsidence mode when the amplitude of dynamic load is 0~50 kPa, and deformation mode turns sliding mode when amplitude is 0~100 kPa.
Static Instability of a Restrained Cantilever Column with a Tip Mass Subjected to a Subtangential Follower Force
Authors: Su Zhen Chao , Xue Yan Xia
Published: August 2013

Based on the theory of Bernoulli-Euler beam, the differential equation of a restrained cantilever column with a tip mass subjected to a subtangential follower force is constructed, the solution of the differential equation is found, and the existence of regions of divergence instability of the system is discussed. The influence of the follower force parameter η, the tip mass parameter β and an end elastic end support on the divergence instability of the column is investigated. Several numerical computations of some cases have completed.
Research and Design of Temperature Monitoring System in Industry Applications Based on PLC
Authors: Zhang Xin
Published: August 2013

Many industrial sites require real-time monitoring of temperature, to prevent the temperature is too high or too low damage to the equipment. This article on the basis of research on the structure of programmable logic controller and it is given a comparative study based on programmable logic controller hardware design and the current temperature sensor. The design of PLC control flow, combined with the actual situation, the completion of a complete temperature monitoring system based on programmable controllers control scheme, which given the specific design methods and control architecture.
Simulation Analysis on Industrial Wastewater Adjust Pool Stench in Collecting Hood with Properties of Environmental Materials
Authors: Du Zhao , Han Jing , Guo Bin , Meng Shao Zuo
Published: August 2013

The relationship is very important between mechanical ventilation airflow pattern and the geometrical boundary parameters of wastewater gas-collecting hood. ANSYS is an effective approach to study of the problem. With a standard κε turbulent model of CFB predominate results show that: the exhaust outlet, tuyere location of pressure, velocity and concentration had a greater influence on the flow field distribution. FRP gas-collecting hood can be used to adjust pool in long-term because of its environmental material properties for acid and wet.
Research on Petrochemical Industry with Analysis of Floating Roof Tanks under the Planar Inclined Foundation
Authors: Wei Li Xin , Li Xiao Yan , Ji Da Wei
Published: August 2013

Floating roof tanks constructed in soft foundations are susceptible to settlement deflections. The most common settlement type is planar inclination. In this paper, the FEM is used for the study of deformation shape and stress distribution of floating roof tanks which have different diameter under the planar inclined foundation. The allowable settlement values were determined. And they were compared with the current national standard. The result indicated that the finite element analysis results were greater than the allowable values set in the current national standard. The allowable values set in current national standard for floating roof tanks under the condition of planar inclined foundation are conservative. Reasonable criteria should take into account the effects of structural response to the foundation displacements.
Study on Formative Industry Design with Trace to Source of Formative Thinking
Authors: Wang Yan Qun , Li Shu Hui , Xu Hai Hao
Published: August 2013

Tao and Xiang are two concepts which have a significant impact on the formative industry design ideological in China. Perceptual and representational are the features of Xiang, these reflected the recognition and using of perceptual factors in formative industry design ideological more often. Abstract and rational are the features of Tao, these reflected the using of objective factors in formative industry design ideological more often. It would group technology and sculpt factors harmonious, increase art and science of formative industry design, build a modern product design process better that pay attention to the importance of image and Tao on formative thinking.
Study on Formative Industry Design with the Impact of Gestalt Psychology on Modeling Cognitive
Authors: Wang Yan Qun , Xu Hai Hao , Chen Fo Yang
Published: August 2013

Modeling is not only a kind of visual language, but also a kind of meaningful visual manifestations. The sense of formative industry design is attracting much attention in the design works, and it is the starting point of Gestalt psychology. Visual perception in law and its basic characteristics of Gestalt psychology have great guiding significance to formative industry design. The analyzing of relationship between overall shape and variety of components is very important. It can guide the formative industry design.
Anti-Surge Control of the Gas Booster in the Thermal Power Plant with Gas-Fired Boiler
Authors: Zheng Yu Xuan
Published: August 2013

Gas pressure plays an important role in the economic efficiency and stability of the operation of gas-fired boiler. However, because of the inherent characteristic of gas booster which is introduced to regulate the pressure of gas, there is surge happened in gas booster, resulting in deviation of gas pressure from set value, even damage to device. To settle the problem of surge, an anti-surge control is designed based on the characteristic curves of gas booster. And the control strategy is applied in a thermal power plant with gas-fired boiler. The practical operating result shows the effect of the proposed method.
Mechanical and Electrical Integration of Workpiece Transfer System
Authors: Cheng Guang Zhen , Ge Shou Feng
Published: August 2013

This paper analyses the movement requirements of the workpiece transfer system, the whole machine adopts the cylindrical coordinate system, which works automatically. Swinging cylinder, clamping cylinder and rotary cylinder is respectively to achieve the forward and backward movement, clamping, and transferring functions. Compared with rectangular coordinate type under the same space condition that the body occupies small volume, has large range of movement, can better meet the usage requirements and both in hardware and control program set interlock protection, which strictly follow the order to execute, only the former movement end, the latter to begin, thus the system can be safe and operate reliably. The system can work continuously in high temperature and humidity and other harsh conditions, in order to improve the working conditions of workers, reduce the labor intensity and improve the level of automation.
Research on Food Processing Engineering with an Inventory Model for Foodstuffs with Service Level
Authors: Xu De Gang , Xue Ming , Qiu Chao
Published: August 2013

As the raw grain processing, the problems of foodstuffs storage deterioration gradually appear, it will affect the enterprise operation costs. The paper analyzed the factors affecting inventory cost with deterioration rate, shortage cost and probabilities of stock on hand and so on, established an inventory control model based on service level constraints. The relationship of deterioration costs and inventory costs were researched on the basis of the model, and gave a method in order to solve the problem of optimization inventory and minimum costs. With the simulation case, the model can effectively solve the problem better.
The Design and Construction of Air Intake System of a Gasoline-Natural Gas Dual Fuel Engine
Authors: Liu Xiao Hong , Wei Zhi Kan , Jiang Jing
Published: August 2013

The concept of this design is to replace a carburetor by an electronic controlled gasoline-natural gas dual fuel injection system, which mainly consists of a gasoline supply unit, a natural gas-air intake system, a single-chip electronic control unit and sensors. The retrofit design and construction of this system enables the engine working under several modes of a) gasoline combustion only, b) natural gas combustion only and c) gasoline-natural gas dual fuel combustion, hence make it possible to combust different fuels under the best air-fuel ratio. This leads to a low exhaust gas emissions and fuel-saving.
Study on Machinery and Electronics Engineering with Analysis and Modeling on Electromagnetic Environment Based on Radio Seeker Penetrating Process
Authors: Liu Hui , Hong Li Na , Yang Jun An , Wang Yi
Published: August 2013

The constituent elements of electromagnetic environment (EME) that the radio seeker faced on the battlefield were analyzed. The pulse flow description of modeling methods was proposed, and details of the method used for signal environment modeling process was given; By selecting different parameters to form a the PDW description word, the threat signal of the electromagnetic environment was described, which provide a detailed basis for subsequent simulation work.
Multi-Objective Optimization in Manufacturing Engineering for Slender Pen Rod Injection Molding Quality Based on Grey Correlation
Authors: Tan Xiao Hong , Wang Lei Gang , Wang Wen Shen
Published: August 2013

In this paper a new approach for the optimization of the multi-objective injection molding process based on the Taguchi robust design combined with the grey relational analysis has been studied. A grey relational grade obtained from the multi-objective grey relational analysis is used to solve the injection molding process with the multiple performance characteristics including volume shrinkage (R1) and axial deformation (R2), the injecting parameters, namely mold temperature, melt temperature, holding pressure and holding time are optimized. By orthogonal polar difference analysis and statistical analysis of variance (ANOVA) of grey relational grade, main factors influencing and the best process parameters were determined: A=50°C,B=250°C,C=30MPa,D=9s.Under the case of continuity factor, Fitting the response surface further the optimal combination of in continuous space r is identified: A=50.3°C,B=250°C,C=29MPa,D=8.3s. Experimental results have shown that the Taguchi combined with the grey relational analysis can avoid human evaluation of the multi-objective optimization, and Injection molding multi-objective optimization is implemented more objectively, and product performance in the process can be improved effectively through this approach.
Mechanical Automation of Rice Transplanting and Key Agronomic Techniques
Authors: Zhang Li Ying , Zhang Zhong Xu , Li Quan Ying , Yao Ji Pan , Li Ru Hai , Zhang Xue , Liang Chuan Bin
Published: August 2013

Mechanical automation of rice transplanting was one of the key aspects of rice production mechanical automation that possessed significant social and economic benefits. The present situation and future development trend of rice planting mechanization of our country were expounded in this paper. Through the analysis of agricultural mechanization to modern agriculture, the combination of agricultural machinery and agronomy and the necessity of accelerating the realization of agricultural mechanization were put forward. At last, Key agronomic techniques and materials needed in the process of mechanization transplanting were illustrated detailedly.
The Stress Distribution Analysis of Spiral-Wound Heat Exchanger
Authors: Hu Xiao Dong , Chi Zhen Xia , Li Ya Jiang , Zhang Yong , Qi Zhen
Published: August 2013

The spiral-wound heat exchangers are mainly used in the industries of food, oil, natural gas and chemical industry with the merits of compact structure and high thermal efficiency. The FEM (Finite Element Method) has been used in this paper to analyze the stress distribution of two different welding methods of T-weld and butt-weld between the tube sheet and barrel with the procedure of modeling, defining constraints, applying loads, numerical calculation. Conclusions are obtained that structure of butt-weld connection is more reasonable than the T-weld method with much smaller stress with the same thickness circumstances of tube sheet.
Influence of Three-Dimensional Stability Lobes on the Cutter Design
Authors: Tang Ai Jun , Ma Hai Long , Liu Zhan Qiang
Published: August 2013

According to the model of three-dimensional stability and the relationship between the parameters of oblique cutting and milling coefficients, this paper analyzes the influence of the cutter geometry parameters (helix angle, normal rake angle) on the three-dimensional stability of the spindle speed, axial and radial depths. On the same cutting condition, it should choose the cutter of having the bigger helix angle and normal rake angle to cut the thin-walled plate, which can increase the stability of cutting process and improving efficiency and quality.
The Design of the Dual Power Mechanical Simple Garage Lifting Platform
Authors: Wang Chang Fa , Wang Feng Lan
Published: August 2013

The design for ordinary garage aims at its small and its insufficient space of goods storage of the flaws and even only a private car can be parked. We adopted the bold structure innovation and designed the Dual Power mechanical simple garage lifting platform. And the device is simple in structure and easy in manufacture with high stability. And goods of storage is convenient which one can take it when wants to use. And two cars can been parked in the auto conditions permitting. Thus it can make the ordinary garage maximize the use of space and improve the utilization of space resources.
Dynamic Analysis of Scratch System of Grating Ruling Machine
Authors: Chu Biao , Shen Yuan , Jin Yi , Zhu Chang An
Published: August 2013

A high quality diffraction grating not only depends on the location accuracy of the positioning stage fixing the grating blank, but also the groove straightness error of the scratch system. As a key of diffraction grating fabrication technology at the nanometer scale, more attention should be paid to the dynamic characteristic of the scratch system. In this paper, both theoretical analysis and model simulation are carried out in order to study the vibration performance of the vibration source (slider crank mechanism) and knife-bridge. Moreover, the multi-body dynamics analysis of the knife-bridge is also calculated.
Experimental Investigation on a Heat Recovery Device Installed on Cement Rotary Kiln
Authors: Wang Kun , Du Wen Jing , Cheng Lin
Published: August 2013

Cement production is a highly-energy-intensive industry. 85% of total energy is used in clinker-making process at rotary kiln, in which about 15% of this part of energy is dissipated via surface of the kiln by radiation and convection. In this paper, a new heat recovery device for rotary kiln is provided, and a preliminary test has been done. After analysis the result, it is found that when temperature of water in the system is low (30°C), the heat transfer can be as much as 200kW; when the temperature is high (>70°C), heat transfer decreases to about 70kW without any convective heat transfer.
Analysis on Gas Flow Field in Bell-Type Annealing Furnace by Using FLUENT
Authors: Qi Wei Dong , Song Jin Chun , Ren Guang An
Published: August 2013

Because temperature decreases sharply, expansion caused by heat and contraction caused by cold are evident, the air in furnace is disturbed greatly and the zone of negative pressure may appear during bell-type furnace annealing. The zone can cause external air permeating the furnace and make steel coil annealed. Therefore it is necessary to analyse the flow field of protective gas in furnace during cooling, whether the air zone of negative pressure can form, the location of the zone and the methods of eliminating the zone. In addition, splitter plate disturbs the flow of gas and its effect on disturbed air is also analyzed. This paper analyses flow field in bell-type annealing furnace by using FLUENT, whether the zone of negative pressure exists and its location.
The Steady State Precision Control of DC Servo Motor Based on State Space Adaptive Pole Assignment
Authors: Huang Jin , Wang Ji Feng , Yang Cheng Zhi
Published: August 2013

In this paper, the steady state precision control based on state space adaptive pole assignment is proposed in order to improve the steady state control precision of DC servo motor. The basic idea is to adaptively adjust the feedback gain matrix, and realize online, estimates of the feedback matrix and steady-state error compensation. Thus the adaptive state space pole assignment algorithm is obtained to overcome the friction effects on motor performance. Matlab simulation results show that this control algorithm can realize the online estimation and compensation for steady state precision of DC servo motor, and it is able to quickly and accurately follow the speed of the motor. The system has better dynamic and steady-state performance, and its characteristic of the closed-loop system robustness is stronger.
Research on Servo Valve-Controlled Motor Velocity Control System Based on Fuzzy Control
Authors: Zang Yi Juan
Published: August 2013

This paper made an in-depth search about the motor rotate speed control which was combined with fuzzy control. The simulation results show that the adverse effect for load moment disturbance is reduced, the self-adaptive ability and controlling performance of the hydraulic servo valve-controlled motor system are improved.
Investigation on Vibro-Acoustic Characteristics from Submerged Cylindrical Shell with Double Damping Layers
Authors: Zhang Chao , Shang De Jiang , Li Qi
Published: August 2013

The vibration and sound radiation from submerged cylindrical shell with double damping layers are presented. The cylindrical shell motion was described with classical thin shell theory. The double damping layers motion was described with the Navier viscoelasticity theory. For different Youngs modulus parameters of double damping layers, the sound radiated power and the radial quadratic velocity of cylindrical shell models were calculated and analyzed. The results show that the sound radiated power and radial quadratic velocity are reduced to varying degrees due to double damping layers in a large frequency domain except low frequency. The double damping layer with soft inner layer and hard outer layer can make the sound radiated peaks move to high frequency, can help to reduce the radial quadratic velocity on outer surface of damping layer, and can help to reduce the vibration of model at antiresonance frequency.
A MapReduce Clone Car Identification Model over Traffic Data Stream
Authors: Yang Wen Chuan , Lin Guang Jie , Wang Jiang Yong
Published: August 2013

Accompany the widely use of Intelligent Traffic in China, all traffic input data streams to the Traffic Surveillance Center (TSC). Some metropolitan TSC, such as in Beijing, produces up to 18 million records and 1T image data arriving every hour. Normally, the job of the TSC is to monitor and retain data. There is a tendency to put more capability into the TSC, such as ad-hoc query for clone car identification and feedback abnormal traffic information. Thus we definitely need to think about what can be kept in working storage and how to analysis it. Obviously, the ordinary database cannot handle the massive dataset and complex ad-hoc query. MapReduce is a popular and widely used fine grain parallel runtime, which is developed for high performance processing of large scale dataset. In this paper, we propose CarMR, a MapReduce Clone Car Identification system based on Hive/Hadoop frameworks. A distributed file system HDFS is used in CarMR for fast data sharing and query. CarMR supports fast locating clone car and also optimizes the route to catch fugitive. Our results show that the model achieves a higher efficiency.