bluuebunny/crossref_metadata_2025 huggingface dataset:
Beyond Knowledge Management
Authors: Karvalics Laszlo Z. , Dalal Nikunj
Published: November 2011

The authors outline trends in managing knowledge, introduce the emerging framework of knowledge governance, and expand its scope. The major approaches of classical knowledge management, distilled to cook-book definitions and consultant practices, are increasingly viewed as inadequate in addressing the growing complexity of information and knowledge flows in modern organizations and societies dealing with rapidly changing environments. Reflecting a new normative push towards conceptual innovation, knowledge governance has emerged as a new paradigm to describe, understand, and analyze the expanding “knowledge domain” in a holistic and comprehensive way. Knowledge governance involves the design of structures and mechanisms to support the processes of sharing and creating knowledge. Knowledge governance has two main interpretation levels in the literature: the company- (micro-) and the national (macro-) level. The authors propose a three-layer model adding a layer of “global” knowledge governance. Analyzing and separating the main issues in this way, we can reformulate the focus of knowledge governance research and practice in all layers.
Delivering Knowledge Services in the Cloud
Authors: Sabetzadeh Farzad , Tsui Eric
Published: November 2011

Cloud computing has become a buzzword in various academic and business domains in recent years. The purpose of this paper is to look into this term within a different proposition as a knowledge delivery ecosystem instead of being merely a model for technology deployment. This paper tries to explore various topics and resources in recent years which have appeared in both scientific and business literatures that focus on providing “knowledge-as-a–service” (KaaS) based on the cloud’s value-added environment.
Retailer’s Ordering Policy in a Supply Chain when Demand is Price and Credit Period Dependent
Authors: Jaggi Chandra K. , Kausar Amrina
Published: November 2011

Trade credit is a well established promotional tool in the present competitive world and its impact on demand cannot be ignored. Businesses often use trade credit to increase their market share and, in turn, the profit. Undoubtedly, trade credit plays a great role in increasing the demand but it also involves a great risk of non-payment. In order to reduce the risk of non-payment, businessman at times use a partial trade credit policy in which they demand a certain percentage of the total amount from the customer at the time of purchase and offers the credit for the remaining amount. Furthermore, it is also observed that the demand of FMCG is highly price sensitive. In order to see the effect of credit and price together, on demand, the retailer’s demand is taken as a function of price and credit period. Moreover it is assumed that the supplier offers the full credit to the retailer but the retailer passes a partial credit to customers. The inventory model, determines the optimal replenishment time, credit period, and price for the retailer that maximizes profit. Numerical examples have been provided to support the model followed by the comprehensive sensitivity analysis.
Identifying Opinion Leaders for Marketing by Analyzing Online Social Networks
Authors: Momtaz Niyoosha Jafari , Aghaie Abdollah , Alizadeh Somayeh
Published: November 2011

The impact of social networks in customer buying decisions is rapidly increasing, because they are effective in shaping public opinion. This paper helps marketers analyze a social network’s members based on different characteristics as well as choose the best method for identifying influential people among them. Marketers can then use these influential people as seeds for market products/services. Considering the importance of opinion leadership in social networks, the authors provide a comprehensive overview of existing literature. Studies show that different titles (such as opinion leaders, influential people, market mavens, and key players) are used to refer to the influential group in social networks. In this paper, all the properties presented for opinion leaders in the form of different titles are classified into three general categories, including structural, relational, and personal characteristics. Furthermore, based on studying opinion leader identification methods, appropriate parameters are extracted in a comprehensive chart to evaluate and compare these methods accurately.
Assessing Soil and Plant Pollution by Abandoned Rural Waste Dumping Sites in Ningbo, China
Authors: Guan Yi Dong , Du Ye Hong , Li Zhen Dong , Luo An Cheng
Published: November 2011

This paper reports the concentration of heavy metals (Cr, Cu, Zn, Cd and Pb) in the soils and rices surrounding the abandoned rural waste dumping sites in Ningbo. Igeo (geoaccumulation index) was calculated to assess the contamination degree of heavy metals in soils. The mean contents of Cr, Cu, Cd, Zn and Pb of soils were 33.3, 24.1, 1.5, 118.9 and 45.6 mg/(kg DW) (dry weight), respectively. All of them were much higher than that of the reference value (i.e. CK), but there were no coherent trend of the metal contents within 1-120m distance from the dumping site. Igeo of heavy metals reveals the order of Cd>Cu>Cr>Pb>Zn, and the contamination assessment of soils using Igeo indicate the moderate Cd pollution, while the soils were unpolluted-moderately overall by Cr, Cu, Zn as well as Pb. The heavy metal contents in root, stem & leaf and rice grains were all remarkable higher than that of the CK at 20-120 m distances, and the heavy metal contents in root were evidently much higher than other plant parts, while those in rice grain were lowest, indicating the great bioaccumulation trend of heavy metals. Although the metal contents in the rice grain were within the legislation limit, its bioaccumulation trend of heavy metals was remarkable, whose contents were 4.38-fold for Cr, 1.76-fold for Cu, 1.28-fold for Zn, 2.67-fold for Cd and 3.03-fold for Pb higher than that of reference value, respectively. Finally, we proposed a decentralized in-situ restoration approach for the dumping sites.
Research on a New Cooling System of Airborne Electronic Equipment
Authors: Chen Xue Yong , Zhao Ning , Cai Yan Zhao , Yan Zhao Jun , Wang Yue Zong
Published: November 2011

In order to solve centralized installation and cooling problems of airborne electronic equipment with big power and high heat flow density in aircraft, the paper put forward an innovative closed-loop forced ventilation cooling system, expatiated system compositions and operation principles, and also took a cabinet system for example to introduce new cooling system design method and simulation results.
Advances on the Pharmacology Research of Active Component in Humic Acid
Authors: Zhou Xia Ping , Fan Xing Ming , Zhang Yi Chao
Published: November 2011

The humic acids in young coal are complex compounds of aromatic-fatty group organic acid with content of functional groups like carboxy, phenolic hydroxyl group, benzoquinonyl, alcohol group , ketone group etc. The pharmacology research of humic acid advanced in slow progress as a result of composition complexity and raw material multiplicity. At first it was analysed that terpene, steroids and other bioactive substances existed in natural humic having effects on antibacterial, antiviral, antitumor and microcirculation improvement. A new way of molecular weight determination for fulvic acid was established by modification of cryoscopic constant which was proved by the detection of capillary electrophoresis and LC-MS then. In terms of Fulvic acid which molecular weight of 300-500, pharmacology of humic acid （FA/HA）- pyrones, humic acid (FA)- catechin, humic acid (FA)-saccharide metabolism of insulin, humic acid (FA)-allantoin-glycoconjugates,humic acid (FA)-glycyron-glycoconjugates which are prepared through selective degradation and branching modification were illustrated with similar pharmacophore (functional group) of Terpenoids, steroids by MTT experiment and flow cytometer.
Structural Response Analysis of Beijing Yin-Tai Center Building under Varying Ground Motions
Authors: Wang Fei , Ma Jie Mei , Li Chun Lian , Chen Yun Hui
Published: November 2011

Deeply studying vibration and seismic response characteristics of Beijing Yin-tai Center provided information reflecting its anti-seismic performance based on which seismic response observation array was to be deployed. Time-historic analytical methods on the basis of modal analysis were applied to carry out structural seismic response. Two load cases were mentioned including the responses under minor earthquakes and moderate earthquakes. El-Centro wave, Northridge wave and synthetized time-histories were adopted with contrast analysis under Beijing Hotel time-history recorded in Tangshan Earthquake. Peak inter-story shift ratios and peak accelerations are obtained and analyzed. The inter-story shift ratio determines elastic state of structure under minor earthquakes and elastic-plastic state under moderate earthquakes. Predominant inter-story displacement and acceleration response provides the floors with more remarkable seismic response, which are vulnerable floors for monitoring in earthquakes.
Critical Force Analysis of a Cantilever Column Subjected to a Subtangential Follower Force and a Vertical Force
Authors: Su Z.C. , Xue Yan Xia , Du Cheng Bin
Published: November 2011

The stability of a cantilever column subjected to a subtangential follower force and a vertical force is discussed for investigating the effects of these factors on the critical force. The governing differential equation of the system and the corresponding boundary conditions are established, and the exact solution is found out by integrating the differential equation. Based on the exact solution, the effects of the parameters relating to the subtangential follower force and the vertical force on the critical force are analyzed, and discussions for these results are performed， the influence curves of the subtangential follower force parameter and the vertical force parameter to the critical force are plotted. The results show that the parameter of a subtangential follower force can be bigger than 1/2, even equal to 1.0, with taking into account of the effect of the vertical force.
Finite Element Study on Influence of Door and Window Openings on Temperature Effect of Masonry
Authors: Yang Wei Jun , Zhao Yu Lai , Zhang Hai Dian
Published: November 2011

The temperature stress crack [1] in wall reduced the quality of wall, at the same time made sensory and psychological adverse effects on the residents. This paper is based on principle of temperature stress cracks, use ANSYS to establish models of concrete perforated brick masonry, through research on the maximum stress and horizontal displacement of the top end by finite element method, mainly studies on the influence of door and window openings on temperature effect of masonry, and advices the porosity of building exterior wall should be take 11.6 ~ 23.2%.
Analysis on Flight Dynamics of Solar UAV with Multiple Propulsion Systems
Authors: Xiao Wei , Zhou Zhou
Published: November 2011

High Altitude Long Endurance (HALE) Solar UAV is integrated with a series of motor-propeller propulsion systems along the large aspect-ratio wing. These systems have an obvious effect on the flight dynamics of the UAV. This paper established a model for the interaction between distributed propulsion systems and the flight dynamics of the airplane, it was used to improve the computation of the UAV’s flight quality, results with and without the modified model were compared. It was found that the large aspect-ratio wing integrated with distributed propulsion systems can change its stability significantly. According to the result, parameters of the propulsion systems are adjusted to optimize the flight quality and system efficiency.
Performance Research on the High-Altitude Valve of an Aero-Engine Ventilation System
Authors: Su Li Chao , Liu Zhen Xia , Lu Ya Guo
Published: November 2011

For aero-engines, high-altitude valve is a key component, which is important to the high-altitude performance of ventilation system. However, theoretical researches or experimental tests of high-altitude valve are rare. To define whether the high-altitude valve can work normally during the whole flight envelope and to offer relational information for the improve design, this article focuses on the operation process and characteristic computation of high-altitude valve. Based on operational principle and structural analysis, using mechanics method, the high-altitude characteristic computation of high-altitude valve was done and the flight height where the valve closes was identified. In the same way, we analysed the static characteristic, getting the inner-cavity pressure in high-altitude flying state. Compared with the experimental results, the analytical methods and calculated values are validated to be accurate. The characteristic curves obtained can be directly used in the check and acceptance or further design of high-altitude valve.
Study on the Simulation Model and Characteristics of High-Speed Grinding for Ceramics
Authors: Yuan Yi Chu , Li Bei Zhi , Zhou Zhen Xin , Zhang Qiang
Published: November 2011

Engineering ceramic machining would bring out several kinds of surface damage owing to its hard and brittle nature. In this paper, a simulation model of single-grit grinding for silicon carbide (Sic) was established to explore the high-speed grinding mechanism. The material behavior was described with the Johnson-Holmquist Ⅱ (JH-2) model. According to the simulation experiment results, the optimal grinding parameters to achieve ductile grinding for Sic has been analyzed, which would provide theoretical basis and take surface damage under control.
Natural Boundary Integral Method for Irregular Plate Problems
Authors: Du Liang Liang , Wu Xiong Hua
Published: November 2011

Natural boundary integral method is applied to deal with plate problems defined in irregular domains. We divide the solution into two parts, a particular solution for inhomogeneous biharmonic equation and the general solution for homogeneous biharmonic equation. For the former, the direct expansion method of boundary conditions is used to treat the arbitrary domains, and the processes of natural boundary integral method coupling with finite element method are omitted. Numerical experiments show that the method is very simple and of high accuracy.
Microstructure and Hardness of the ZrO2/Ni60A Composite Coating Formed by Feeding Powder Laser-Clad on Circular Surface
Authors: Ouyang Ba Sheng , You Run Juan
Published: November 2011

Cladding experiment with parameter variations was presented to manufacture the better processing property coating by laser cladding self-fused Ni-based ceramic powder of ZrO2composite on the excircle surface of 304 SUS. The influence of the laser process parameters on macroscopic view, microstructure and micro-hardness of the laser cladding layers were investigated. The results show that we can get better coating when laser power is 1.5KW, and that the cladding layer microstructure has the trend of refined framework with the growing of scanning speed; micro-hardness will be higher and distribution from substratum to surface with little fluctuate by optimizing scanning speed.
Numerical Simulation of B-Pillar’s Hot Press Forming Process and its Shape Optimization
Authors: Long An , Ge Rui , Zhang Yi Sheng , Wei Xing
Published: November 2011

To solve the problem of part’s section thinning easily occurred in hot press forming, the numerical simulation model of hot press forming process of a B-Pillar on one domestic car was established, the forming process was simulated by PAM-STAMP 2G software, the area thinning on the part were forecasted. Then through modifying the corner radius and the tiny shape of the part, the thinning level lightened greatly, the effect was certificated by new simulation results and practical production.
Numerical Analysis on Short-Circuit Force Parameters of Windings for Power Transformer
Authors: Liu Jian Jun , Wang Jian Min , Jing Chong You , Fan Chang Zai , Zhai Yuan
Published: November 2011

The Simplified model of both calculating leakage magnetic field and mechanical force of windings at short circuit condition for a 120MVA/220kV power transformer is set up. The leakage magnetic field ‚ short-circuit force and stress in transformer windings are analyzed and their distributing characteristics are acquired respectively by using FEM. The calculation method and results are validated by withstanding short circuit strength test of the product. A number of useful suggestions are given for design of power transformers.
Study on the Trial-Manufacture of a Large Discharge Emulsification Pump's Crankshaft
Authors: Zhou Zhe Bo , Zhang Jin Long , Zhu Nan Nan , Liang Hai Zhen , Zhou Qing Hong
Published: November 2011

Aimed at the work condition and structure's characteristics of a large discharge emulsification pump's crankshaft, the load type of a low rotational speed and high load were determined, and the quality of a crankshaft is related with material, manufacture, heat treatment and so on. Based on unit production model during the research and development, the processes of the roughcast, manufacture and heat treatment were described: The roughcast was forged by a forging die in order to suffice a low rotational speed and high load. The crankshaft was manufactured by a universal machine tool, clamps and measuring tools in order to obtain the precision of specification after processing. Heat refining after rough cutting, nitrogen treatment and polishing after finish machining were selected in order to improve mechanical property, application life and cost reduction.
Research on the Vibration Attenuation of Heavy-Duty Machine Tool Based on Non-Obstructive Particle Damping (NOPD)
Authors: Xiao Wang Qiang , Duan Dong Ping , Bian He Chuan , Li Wei , Deng Le
Published: November 2011

In this paper, the possibility of applying non-obstructive particle damping (NOPD) into the vibration attenuation for heavy-duty machine tool was analyzed and the experimental study on the characteristics of damping vibration attenuation was then carried out. First, the finite-element model for heavy planer type milling machine was built and then the stress state excited by the cutting force in the presence of the holes for filling particles located in the stand column was calculated. Secondly, based on the experiment, the acceleration time-domain waveform and the frequency response function (FRF) between NOPD application and the traditional solid cast-iron column of the planer type milling machine were obtained. Finally it is indicated that NOPD can effectively reduce the amplitude of vibration of heave-duty machine tool and has a good damping effect. Meanwhile, it has some additional effects, such as cost reduction, energy conservation and emission reduction.
Research on Modeling and Simulation of Sonar Performance Using Simulink
Authors: Li Ke Hua , Yu Jin Yong , Lei Jun Wei
Published: November 2011

With respect to different weather and sea conditions, the acoustic model under ocean environment was proposed by analyzing the interaction characteristics between sonar and environment. Based on the sonar equation, the performance mathematical models of active and passive sonar were produced with considering acoustic characteristics of the target and parameters of the marine environment. Simulation results of target detection performance for different target types, sonar parameters and sea conditions show the validity of the proposed model.
Effect of Niobium Addition on the Mechanical Properties of Ti Stabilized Interstitial-Free Steel
Authors: Ge Rui , Xue Huan , Long An , Pan Li Bo
Published: November 2011

Two interstitial-free steel grades, one based on combined niobium and titanium additions and the other based on titanium only addition, were investigated. Annealing experiments were used to study the effect of niobium on the mechanical property. And tensile-shear fatigue tests were used to study the effect of niobium on the fatigue property of spot welding. The experimental results show that niobium addition not only can significantly improve the mechanical properties of the basic materials by way of grain refinement, but also has beneficial effects to the fatigue strength of spot welding.
Plasma Assisted Flame Holding of a Propane Jet
Authors: Duan Li Wei , Hong Yan Ji
Published: November 2011

A nanosecond pulsed plasma discharge is used to ignite a propane-jet flame. The nonequilibrium plasma is produced by repetitive pulses of 30 kV peak voltage, 70 ns pulse width and 2 kHz repetition rate. The experimental results shows that the use of a repetitively nanosecond pulsed discharge resulted in significant increase in flame stability.
Three-Dimensional Virtual Assembly of Automatic Fuel Measuring Device of Diesel Engine Test Bed Based on VRML
Authors: Jiao Pei Gang , Shan Shao Fu , Miao Qiu Hua
Published: November 2011

In this paper, three-dimensional automatic fuel measuring device of diesel engine test bed was created. The function of virtual assembly was achieved using virtual reality modeling language. Network virtual assembly can operate, browse and assemble automatic fuel measuring device remotely by embedding virtual assembly in web pages. The virtual assembly method presented in this paper can be easily extended to deal with many other problems in engineering system if control parameters are modified properly.
Enhanced Cellular Function of Human Vascular Endothelial Cell on Poly (ε-caprolactone)/Gelatin Coaxial-Electrospun Scaffold
Authors: Yan Ming , Xu Ke Di , Zheng Xiao Xiang , Chen Zheng Jian , Jiang Hong Liang
Published: November 2011

An extracellular matrix-like poly (ε-caprolactone) (PCL)/gelatin core-shell nanofibrous scaffold with high hydrophilicity was developed by coaxial-elecrospinning. However, the behavior of vascular endothelial cells (ECs) on the modified scaffold remains limited. In this study, human umbilical vein ECs (HUVECs) were seeded onto PCL scaffolds with or without gelatin. Morphological changes of HUVECs were observed under confocal laser scanning microscopy (LSCM). HUVECs’ adhesion, proliferation and apoptosis were detected by MTT assay and flow cytometry (FCM). Our results showed that HUVECs on PCL/gelatin scaffolds with identical polygonal and cobblestone-like characteristics reached confluence after 7 days. Modification of PCL nanofibers significantly promoted the attachment of HUVECs onto scaffolds within 1 hour. Compared to pristine PCL, a two-fold increase in proliferation of HUVECs was also observed after 7 days, whereas the apoptosis of HUVECs was obviously reduced by 40% on the modified scaffolds. In summary, these results indicated modified PCL/gelatin scaffold developed by coaxial-elecrospinning can increase the adhesion, proliferation, and suppress apoptosis of HUVECs, suggesting it has a great potential and promising vascular graft in tissue engineering applications.
Design and Implement of Computer Aided Instruction System for Statistical Quality Control Based on Artificial Intelligence Technology
Authors: Wang Chun Lian
Published: November 2011

In order to design and implement a computer aided instruction system; the application of the artificial intelligence technology is studied in depth using statistical quality control as example. Firstly the statistical quality control teaching was analyzed. And then the design ideas of the computer aided instruction system are put forward. And then the structure of the expert teaching system is designed. And then the interacting ways of the expert system was analyzed. Finally the application of the expert teaching system was summarized.
Central Distributions of Primary Sensory Trigeminal Fibers in the Carp (Cyprinus carpio)
Authors: Xue Hao Gang , Gai Xiao Dong , He Xin , Yang Chun Ying
Published: November 2011

Teleostean trigeminal nerve somatosensory fibers consists of maxillar, ophthalmic, and mandibular branches. Nevertheless, it is still unclear about the central distribution of the trigeminal nerves. The projections of primary sensory trigeminal nerves were tested by the method of tract-tracing in the carp (Cyprinus carpio). Tracer was injected into trigeminal nerves’ root marked terminals in the tautomeral principal sensory trigeminal nucleus, medial funicular nucleus, descending trigeminal nucleus, medial part of posterior lateral valvular nucleus and facial lobe. The study revealed that the primary trigeminal sensory projection patterns of a cyprinid teleost, the carp are similar to those of other vertebrates such as mammals, birds, reptiles and amphibians. The results of our research also suggested that the presence of an organizational plan was common to vertebrates .
Improved Identification of White Blood Cells and Renal Tubular Epithelial Cells in Urine Using Cytology
Authors: Sun Xu Guo , Wei Dian Jun , Liu Xiao Chun , Ma Yu Zhu , Fan Xin , Hu Ke Sheng
Published: November 2011

Objectives: Conventional automatic identification system to differentiate white blood cells from renal tubular epithelial cells was limited by overlapping parameters and investigation of clear classification of these two cells could be critical to diagnosis and prognosis. Methods: Urine samples from 120 individuals (30 bladder cystitis, 30 glomerular nephritis, 30 pyelonephritis and 30 nephrotic syndrome) were collected. Urine sediments were stained by Sternheimer method and examined by TJYDSXG-1 microscopic cell analysis system including cell size, degree of cytoplasmic staining and nuclear coefficient of variation (CV). Peroxidase chemical staining was also employed to differentiate white blood cells (WBC) and renal tubular epithelial cells (RTEC) in sediments. Results: WBC in urine sediment was (8-13) μm, while (10-16) μm for RTEC, with 36% overlapping of nuclear CV. Peroxidase chemical staining intensity index is 0-4 for WBC and 0-1 for RTEC. Conclusions: Percentage of overlap between WBC and RTEC can be reduced to 7%-13% when Sternheimer staining was combined with peroxidase staining.
Investigations of the Effects of Epigallocatechin-3-Gallate and Co2+ on Cal-27 Cells In Vitro
Authors: Su Jian Sheng , Han Wen Fei , Wang Hai Bo
Published: November 2011

Epigallocatechin gallate (EGCG), a major polyphenol of green tea, has been shown to inhibit the growth of various cancer cell lines. Co2+ is one of essential trace elements of human nutrition, both lack and excess have adverse effects on health.In this research, MTT assays were applied to investigate the effects of Co2+, EGCG and their coactions on Cal-27 cells, The results show that Co2+ and EGCG inhibited the growth of Cal-27 cells in a time-and dose-dependent model, and inhibition effects were extremely dependent on their concentrations, added orders and [Co2+]/[EGCG] ratio. Inhibitory effects of Co2+ could be decreased in the presence of EGCG. LC/MS analysis showed that a new component arised when EGCG and Co2+ were mixed together. It was inferred that the new components were [EGCG-2Co] and [EGCG-Co], and the process might be responsible for the observed effect of the bioactivities of Co2+ against Cal-27 cells.
Preparation and Evaluation of Daidzein Loaded Self-Microemulsifying Drug Delivery System
Authors: Zhang Na , Zhang Na , She Dan Dan , Hu Lian Dong , Liu Hong Fang
Published: November 2011

The purpose of the current investigation was to improve the solubility of daidzein, a poorly water-soluble drug which exhibits low oral absorption bioavailability, in a self-micro-emulsifying drug delivery system that is suitable for oral administration. A carefully executed central composite design was applied to screen the optimal formulation of daidzein SMEDDS. The formulations were characterized by solubility of the drug in the vehicle, droplet size, and emulsification time. The optimal formulation consists of 20 % ethyl oleate, 64 % OP emulsifier, and 16 % polyethylene glycol 400. The droplet sizes of drug-free SMEDDS and drug-loaded SMEDDS were 66.4 nm and 77.9 nm respectively. Additionally, the dissolution rate of daidzein from SMEDDS was significantly enhanced in comparison to pure drug. The data suggested that the daidzein SMEDDS was prepared successfully.
Study on the Property Change of Processed Rhizoma Coptidis Based on 5-HT Level and Brain Tissues Morphology of Rats
Authors: Zhong Ling Yun , Sun Ying Ying , Gong Qian Feng , Zhu Jing
Published: November 2011

All Chinese medicinal substances have a special property (cold, hot, warm or cool) according to the theories of Traditional Chinese Medicine (TCM). Processing of Chinese Materia Medica ( pao zhi ) is always applied to modify the property according to clinical needs in TCM. The purpose of this paper was to evaluate the processing effects on the property of Rhizoma Coptidis (RC). The wine-processed RC (WPRC, with less cold property in TCM) and bile-processed RC (BPRC, with colder property in TCM) were prepared, the level of 5-hydroxytryptamine (5-HT) of rats was determined by fluorescence spectrophotometry and the morphology of rats’ brain tissue was analyzed by immunohistochemistry. Compared to crude RC treated group, the distribution of 5-HT-immunopositive neurons and cell staining in the brainstem raphe nuclei were remarkably denser and deeper in BPRC treated group, while the distribution of 5-HT-immunopositive neurons was sparse and the cell staining was lighter in WPRC group. The work provided a meaningful way in the research of processing effect on properties of Chinese medicinal substances.
Comparison on Nutrient Composition and Amino Acid and Fatty Acid Profile of Muscle in Wild and Farmed Prawn, Penaeus japonicu
Authors: Xu Xing Hong , Yan Bin Lun , Xu Jia Tao
Published: November 2011

Penaeus japonicus is an important marine shrimps resource in China. In order to evaluate the nutritional value, the contents of general nutritional compositions, amino acids and fatty acids in muscle were compared between wild and farmed P. japonicus. The contents of muscle moisture and crude protein, fat and ash in wild P. japonicus were 77.16%, 17.74%, 2.08% and 1.79％, and those in farmed P. japonicus were 78.02%, 17.26%, 2.04% and 1.63％, respectively. The essential amino acids (EAA) in wild and farmed P. japonicus were 23.25％ and 22.43％, respectively. The amino acid score of essential amino acids were higher than 100 except Leu and Trp, so the protein of P. japonicus has a well-balanced amino acid composition. Wild P. japonicus has more unsaturated fatty acids (64.05％) than farmed group (60.34％). Higher n-3 polyunsaturated fatty acids (PUFAs), eicosapentainoic acids (EPA, 20:5 n-3), docosahexaenoic acids (DHA, 22:6 n-3) contents and lower C16:0, C20:0, C18:1, C18:2, C18:3 levels were detected in the wild group. Values of n-6/n-3 in muscle of farmed and wild P. japonicus were 0.30 and 0.23 respectively, which were both significantly lower than the maximum value (4.0) recommended by UK Department of Health (HMSO, 1994), while Values of the PUFA/SFA ratio of two groups were 0.60 and 0.74 higher than the minimum value (0.45) recommended by HMSO. Thus the muscle of farmed and wild P. japonicus are both healthy and safe, and the the muscle of wild P. japonicus is more beneficial to human health.
Effects of Pulsed Electric Fields on Phospholipid Molecular Conformation by Raman Spectra
Authors: Jia Xiao , Zeng Xin An
Published: November 2011

In order to study the sterilization mechanism of pulsed electric fields（PEF） on microorganisms and the interaction between PEF conditions and cell membrane composed of phospholipids, the authors studied the phospholipid molecular conformation changes under various electric fields strength treatments using Raman spectra. It was demonstrated from the Raman spectra that there was little influence of PEF on the conformation of O-C-C-N+ backbone in the choline group of phospholipid. The intensity ratios of I1096/I1062 and I1096/I1126 represented the gauche/ trans ratioof C-C vibrations, but the first was increased directly, while the other one was increased firstly and then decreased with increasing electric fields strengths but the ratio was still higher than that of the control sample. I2885/I2850 represeted order/ disorder of chain-chain interactions which was decreased with increasing electric fields strengths. It was indicated that the intermolecular disordering in hydrocarbon chain of the lipid lattice was increased and the membrane fluidity was enhanced after PEF treatments.
Extraction and Antioxidant Activity of Ultrasonic-Assisted Flavonoids from Suaeda salsa
Authors: Guo Lei , Liu Chao
Published: November 2011

The box-behnken design combined with response surface methodology was used to optimize ultrasonic-assisted extraction of flavonoids from Suaeda salsa (Linn.) Pall. The results indicate that the highest extraction rate of flavonoids by ultrasonic-assisted extraction could arrive 5.17% using 500W ultrasonic power, 69% ethanol as solvent, 77°C extraction temperature, 1:40 solid to liquid ratio for 58 min extraction. The flavonoids-enriched extracts exhibited quite strong reducing property and excellent inhibitions of DPPH radical, hydroxyl radical. Meanwhile, it was found that the bioactivities appeared to be dose-dependent of flavonoids.
In Vitro Free Radical Scavenging Activity and Total Flavonoid of Abelmoschus manihot (L.) Medic Extracts
Authors: Qiu Yan , Song Jian Jun
Published: November 2011

The Ablmoschus manihot (L.) Medic, an edible hibiscus of the Malvaceae family, is abundant with total flavonoid. The content of total flavonoid from A. manihot flowers (TFA) was extracted by 70% ethanol (ethanol:water, 70:30). The scavenging effects of TFA on superoxide anions and hydrogen radicals were related to the total flavonoid concentrations with the IC50 values of 63.90 ±2.21 μg/mL and 266.88±28.32 μg/mL, respectively. However, the IC50 values of standard ascorbic acid were 436.52 ±14.36 μg/mL and 439.58±21.41 μg/mL, respectively. The DPPH radical scavenging activity increased with increasing of TFA concentrations and the highest inhibition was 94.63 ±3.01% at 50 μg/mL, as compared to ascorbic acid 34.94 ±1.50%. The extract also showed good reducing power. The data from this study suggest A. manihot flower extract has significant potential to use as health supplements and nutraceuticals.
Nutritional Components in the Fruit of Different Blueberry Cultivars in Nanjing
Authors: Wu Wen Long , Zhao Hui Fang , Fang Liang , Lv Lian Fei , Li Wei Lin
Published: November 2011

In order to understand the nutritional characteristics of blueberries (Vaccinium spp.), provide the fundamental basis for its processing and utilization, 13 blueberry varieties were studied on their major nutrient compositions in fruit. The results showed that blueberry fruit contained 10.31 ± 0.98% of soluble solids, of which 77.13% was soluble sugar and 89.02% of soluble sugar was reducing sugar. Average content of organic acids was 0.79 ± 0.23% and sugar-acid ratio was 10.91 ± 3.38. Total polyphenol content was 4.921 ± 0.738 mg·g-1, of which anthocyanin was 1.441 ± 0.435 mg·g-1 and ellagic acid 0.921 ± 0.098 mg·g-1. Nutrient content and their components had difference between blueberries varieties.
Effect of Arthrigia on Adjuvant Arthritis Rats’ IL-12
Authors: Chen Xi , Zhang Cheng Yi , Xue Hao Gang
Published: November 2011

Rheumatoid Arthritis （RA） is a systemic chronic autoimmune disease. To study the therapeutic mechanism of effects of Skullcap Brightviolet （SB），glucosamine/chondroitin （GC），and the combination of them (named Arthrigia) on RA. With the adjuvant arthritis (AA) rat models, we observed the protective effects of oral SB, GC and Arthrigia in different concentrations on AA in rats. We further examined the immunological mechanism of the combination of them by testing the rats’ secretion of IL-12. The results showed that Arthrigia inhibited the production and secretion of IL-12 factors in some extent, and its effects are more potent the single SB or GC. The present study provides the experimental evidences for Arthrigia for its further development, clinical prevention and treatment of RA.
Study on Lactobacillus Isolation from Rabbit Meat Sausage and its Fermentation Property
Authors: Dong Jie , Jiang Yun Sheng , Yu Hai , Zhang Wen Juan , Liu Yu Feng
Published: November 2011

Three lactobacilli (L26, L34 , L106) isolated from naturally fermented rabbit sausage in a traditional way are identified as lactobacillus plantarum, lactobacillus sake and lactobacillus fructosus. Further study of its fermentation property shows that three lactobacilli are effective in acid production, alkali resistant, nitrite resistant and bacteriostatic, and are antagonisticaction free, which can be used as combined rabbit meat starter.
Study on Anti-Human Herpes Virus 6 Effects of Baicalin
Authors: Chen Xi , Zhang Cheng Yi , Gai Xiao Dong
Published: November 2011

Human Herpes Virus 6 (HHV-6), which is different with Human Immunoddficiency Virus (HIV) was first isolated from peripheral blood mononuclearcells of six patients with AIDS and lymphoproliferative disorders in 1986. It is one of the most common viral infection in AIDS patients. The pathological changes caused by HHV-6 are usually serious and easy to recur. The infection affect prognosis of AIDS apparently. HHV-6 infection is related to various diseases, such as chronic fatigue syndrome, necrotizing lymphadenitis, mononucleosis-like syndromes, AIDS, recipients of organ transplantation and hepatitis. HHV-6 can be found even in healthy bodies. At present, little is known about the mechanism of latency and reactivation of HHV-6 so there is no effective specificity drug on HHV-6 infection. Therefore, it is very important to find safety and effective anti-HHV6 drugs. To study the anti-HHV-6 action of Baicalin, the human T-cell strain was used to do the anti-HHV-6 effect in vitro. The result shows that Baicalin has evident effect on cytopathic effect (CPE) caused by HHV-6 GS. This result prompts that Baicalin has therapeutical effect on infection caused by HHV-6t.
Synthesis and Characterization of an Alendronate-Chitosan Conjugate
Authors: Shao Xiao Hong , Xu Ji Qing , Jiao Yan Peng , Zhou Chang Ren
Published: November 2011

The biomineral-binding alendronate-chitosan conjugate (Scheme 1) was developed as a novel drug delivery system. Alendronate was conjugated to the hydroxyl groups of chitosan, thereby maintaining the amino groups of chitosan intact. By means of FT-IR and 1H NMR, the characterization was conducted to confirm the successful synthesis of alendronate-chitosan conjugate.
Highland Plains People AVP Gene Polymorphism and the Relationship between Hypoxic Adaptation
Authors: Li Wen Hua , Yuan Dong Ya , Zhang Min , Sun Fang Yun
Published: November 2011

Objective To investigate the plateau plains of arginine vasopressin (AVP) gene polymorphism population and hypoxic adaptation in the relationship. Methods Polymerase chain reaction and restriction fragment length polymorphism method, the indigenous Tibetan population and plains Han Chinese AVP gene polymorphism detection and analysis of genotype and allele distribution. Results Showed that 150 cases of native Tibetans in +22959 sites GG, GT, TT distribution of genotype frequencies were 46%,50.1% and 3.3%, while the plain Han people 60. %, 37.3 %and 4.7%, the difference was statistically significant (P <0.05); Tibetan plateau alleles G, T in the distribution frequency of 67.4 %and 32.6,% and 82.2% and 17.8% plains of the Han people, the difference Statistically significant (P
Advantages of CBCT in Evaluating the Direction of Dental Implant in Immediate Implant: A Case Report
Authors: Gao Yong Bo , Wu Xi Feng , Chen Shu Ping , Yang Li Ming , Jiang Ai , Zhou Yan Min
Published: November 2011

Cone beam computed tomography （CBCT） is an exciting development in dental and maxillofacial imaging. This article gives an report for evaluation the direction of dental implant in immediate implant using CBCT
Analysis and Simulation of Screw Joint in CNC Machine Tool
Authors: Zhang Ya Wei , Zhang Wei Min
Published: November 2011

CNC machine tools has always screw joints in its feed drive systems; In order to obtain good performance of CNC machine tool, it is necessary to model the screw joint with more accuracy and to research its influence on the vibration characters of the feed drive system. In this paper, the screw joint is analyzed by multi-body system theory and is modeled as flexible multi-body; Its mathematical describe of constraint condition is given by the modeling of screw joint. A revise factor is introduced into the process of FEM simulation to reflect the deformation in the screw joint. By this way, the effect of deformation in the screw joint is researched in the modeling under the ANSYS circumstance, the harmonic response under considering deformation contrast to that of without deformation. From the analysis in the simulation, it is necessary to take the deformation of screw joint into account.
Analysis of Natural Frequency of Simply Supported Beam with Vertical Elastic Constraint
Authors: Geng Bo , Hu Miao , Wang Qi Chen , Lin Jin Zhou , Li Dian Peng
Published: November 2011

Modal analysis of a simply supported beam with elastic support in vertical direction was conducted. Based on Bernoulli-Euler beam model, the first three nature frequency equations and the vibration mode function were obtained. And with different stiffness in vertical direction, the nature frequency equations were solved using numerical method, at the same time, curves of the relationship between support stiffness and nature frequency were acquired, and the corresponding functions were fitted with least square method simultaneously. Based on a typical beam structure, the accuracy of the functions was validated using finite element method, and the relative error was less than 3%.
Experimental Research on the Crack Identification of Drawing Parts Based on AE Technique
Authors: Luo Zhi Gao , Zhang Bao Gang , He Xin
Published: November 2011

The paper performs an experimental research on the crack identification of drawing parts using AE technique. Under the platform of the AE system, the AE signals of drawing parts crack are acquired. BP neural network is designed with three layers. They are ten neurons of input layer, three neurons of output layer and thirteen neurons of hidden layer. The characteristic parameters of the crack acoustic emission are considered as the input of BP neural network to exercise the network. The test data are inputted to the neural network after it is exercised. The test result is in accord with the experiment result. The method is proper to identify the crack of drawing parts. The emergence of many inferior parts and the waste of resource can be avoided. It also can debase the cost of manufacture and improve the productive efficiency.
Kinematics and Kinetostatic Analysis of a New Type of Mechanical Excavator with Controllable Mechanism
Authors: Pan Yu Chen , Cai Gan Wei , Zhang Zhuan , Chen Yuan , Li Yan Zhou
Published: November 2011

A new type of mechanical excavator is introduced in this paper aiming at solving the problems the traditional mechanical excavators and hydraulic excavators have respectively, which are lack of flexibility and hydraulic leaks. The analysis of the proposed novel excavator is carried out including: configuration, kinematics, force analysis, and kinetostatic analysis. Based on the equilibrium equations, the counterpoise torque, reaction force and variation of each joint are obtained for given input variables and external load. A simulation study is also proposed.
NC Machining Simulation of Spiral Bevel Gear Based on VERICUT
Authors: Wang Yong , Dong Jing Chuan , Wang Tai Yong , Zhao Lin
Published: November 2011

Based on the traditional cradle-type spiral bevel gear machining theory, the mathematical model of tilt machining method for the pinion member of spiral bevel gear pair is created. Then, by applying coordinate transformation method from crade-type machine to CNC one, a five-axis virtual CNC machine model is established by VERICUT software. at the same time, the pinion cutting simulation is carried out under VERICUT according the properties of the general five-axis CNC system and the relevant configuration parameters. By using this method, the accuracy of the bevel gear cutting system based on a general five-axis CNC can be well verified.
Online Identification of the Bearing Dynamic Parameters for Rotor-Bearing Systems
Authors: Liu Chang Li , Zhou Shao Ping , Di Yuan , Xie Peng Ru
Published: November 2011

A finite element model of rotor-bearing system with two disks was derived. Based on the vibration of journals, the online identification algorithm of the bearing dynamic parameters was studied. The identification of the bearing dynamic parameters of the rotor was validated by numerical simulations. The results will contribute to on-line fault diagnosis based on model.
Precision Analysis for Large-Travel Rotational Butterfly Pivot
Authors: Lu Ya Fei , Zhou Xiao Yao , Fan Da Peng , Zhang Zhi Yong
Published: November 2011

Butterfly pivot is a large-travel rotational flexure pivot, which can provide elastic support for the rotational shaft in several ten degrees. Rotational precision is of great important for its application. Because of the complex structure, rotational precision is always taken with Finite Element Method (FEM), which is not suitable for design and optimize parametrically. The structure property of the butterfly pivot is analyzed before the precision analysis. Four-Blade Isosceles-Trapezoid Element is present as the basic structure unit of the Butterfly Pivot. And then, Rotational precision of the Four-blade Isosceles-Trapezoid unit is calculated and analyzed. The Self-Compensation performance of the butterfly Pivot is also studied. Work in this thesis can validate the high rotational precision of the butterfly pivot.
Research on Integrated Architecture for Tool Wear Monitoring System of CNC Machine Center
Authors: Ning Qian , Liu Qing Jian , Liu Lu
Published: November 2011

Cutting tool wear degrades the machining quality and reliability of CNC machine tool significantly in machining processes. Methods for monitoring tool wear online are therefore crucial to implement optimization of the cutting parameters and improvement of manufacturing processes performance. An intelligent tool wear estimation system that integrates condition monitoring, pattern recognition and trend prediction has been presented in this paper. The raw signals contain useful information from several sensors measuring process variables are acquired and analyzed utilizing monitoring units. The obtained feature elements are processed using support vector machine algorithm to identify tool wear degree. The implementation mode and specific functions of the integrated system architecture is detailed described. The experimental results show that the integrated tool wear monitoring system is feasible and effective.
Smart Reverse Supply Chain: An Application of IoT to Green Manufacturing
Authors: Xu Xue Qi , Jin Cong , Cao Yu Dong
Published: November 2011

Reverse supply chain (RSC) management, which is oriented towards the entire lifecycle of products, has been concerned with the emerging of green manufacturing. Based on radio frequency identification (RFID), sensing and intelligent technologies, the rapid development of the Internet of things (IoT) will form a kind of smart reverse supply chain (SRSC), which is able to enhance the reverse supply chain real-time information transmission, as well as reduce the uncertainty and complexity of the product recycling process. Some problems of RSC are analyzed in this paper, and then the SRSC system network topology is proposed. Furthermore, the technical integrated architecture and related key technologies are discussed.
Study on the Test Method for High Temperature and Heavy Loaded Grease Bearing Life
Authors: Xu Yun Gen , Weng Ze Yu , You Hong Wu , Zheng Yan Qin , Huang Xiao Ping
Published: November 2011

Temperature, load and rotate speed are the main factors which influence grease bearing life are presented by means of study on failure mechanism of grease. According to the test demands of high temperature and heavy loaded grease bearing life, test temperature, load and rotate speed of grease bearing life test are analyzed and discussed, presented that different greases should apply different test temperature. In addition, the filling amount of grease and test running mode of the grease bearing life test are discussed.