Shandong Science 2011 Vol.24
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Construction of Shandong coastal monitoring buoy network
DU Li-Bin, WU Cheng-Xuan, HE Hai-Qing, QU Jun-Le
J4    2011, 24 (1): 1-5.  
Abstract1797)      PDF(pc) (947KB)(2563)       Save

         We construct a coastal monitoring buoy network based on the Shandong specific coastal geographic environment. It covers such area as distant sea, offshore and coast and extends from coast to 60 miles away from coast. We also perform its optimization. It can detect ocean pollution, red tide, sea water quality, and effectively monitor storm tide and typhoon.

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Cited: Baidu(3)
Application of one dimensional wavelet signal processing in the measurement of seawater total organic carbon
CHENG Yan, REN Guo-Xing, CHENG Wen
J4    2011, 24 (1): 6-9.  
Abstract1063)      PDF(pc) (732KB)(1921)       Save

        This paper presents a wavelet transform based signal noise reduction algorithm for the signal denoising problem of the determination of seawater total organic carbon. This Visual C++ implemented algorithm decomposes the collected signal, removes the high frequency signal components and reconstructs back to the noise reduction signal. Experiments show that the algorithm is simple and effective and can achieve good noise reduction effect.

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Hardware design of ARM architecture based TOC online seawater analyzer
MA Ran, CHENG Yan, REN Guo-Xing, LIU Yan
J4    2011, 24 (1): 10-15.  
Abstract1353)      PDF(pc) (870KB)(1916)       Save

        We developed a chemiluminescence based total organic carbon (TOC) online seawater analyzer for the requirement of ocean ecological investigation to TOC. This instrument is based on SOC technology, and includes an ARM instruction set based microprocessor S3C2440 and an embedded Windows CE operating system. A vast number of online tests show that this analyzer can guarantee not only measurement precision but also higher measurement speed, so it has better application potency.

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A survey of keyhole plasma arc welding
LUO Fei, JIA Chuan-Bao, XUE Liang-Chang, CHENG Shuang-Qiu, ZHANG Lin-Lin, WANG Fang
J4    2011, 24 (1): 16-21.  
Abstract1098)      PDF(pc) (963KB)(2174)       Save

         This paper surveys the characteristics, classification and the parameters matching for the technology of keyhole plasma arc welding. Keyhole plasma arc welding can cause a special keyhole, with which welding speed, workpiece thickness and welding efficiency will be all increased significantly. It can be generalized to constant, pulsed, variable polarity and special plasma arc welding, so it can satisfy special requirements of many different industries. This paper is quite significant to guide welding practice and increase productivity and the quality of welding joints.

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Cited: Baidu(1)
UVInduction and culture optimization for Nitzschia closterium
ZHANG Xin-Jian, REN Yan, HUANG Yu-Jie, SONG Li-Lu, LI Hong-Mei, ZHAO Xiao-Yan, ZHANG Guang-Zhi, YANG He-Tong
J4    2011, 24 (1): 22-27.  
Abstract1010)      PDF(pc) (848KB)(2117)       Save

        We obtained a strain of oilrich [WTBX]Nitzschia closterium[WTBZ] (BC6) through UVinduction. We further investigated the effects of different culture conditions such as temperature, irradiance, pH value, salinity and nitrogen concentration on its growth. The OD680 and growth rate were determined every two days. Experimental results show that the optimum culture conditions are temperature of 20 ℃, pH value of 7.5, irradiance of 54 μmol·m-2·s-1, NaNO3 concentration of 105 mg·L-1and NaCl concentration of 27 g·L-1. Its highest cell density can reach 1.69×106/mL,  2.2 times higher than that of nonoptimization, under these optimal conditions.

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Bioindication of bryophytes to environmental quality of Jinan
REN Zhao-Jie, HUANG Zheng-Li, LI Lin, ZHAO Zun-Tian
J4    2011, 24 (1): 28-32.  
Abstract1427)      PDF(pc) (733KB)(2041)       Save

         We investigated bryophyte from ten different sampling sites and made a comparison among their species.  We altogether collected 365 specimens, which belonged to 62 species, 33 genera and 15 families.Gymnostomum calcareum, Weisia planifolia and Physcomitrium eurystomum were the prevalent species. They can serve as the primary plants for the ecological restoration of an industrial area.

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Cited: Baidu(2)
New method for isolation and culture of lichenized fungi
QIU Zhen-Lu, WANG Hai-Ying, ZHAO Zun-Tian
J4    2011, 24 (1): 33-35.  
Abstract1719)      PDF(pc) (716KB)(1977)       Save

         This paper presented a new method for isolation and culture of lichenized fungi and lichen endophyte fungi. We directly selected medulla mycelium for cultivation with PDA nutrition medium. The growth rate of the community of lichenized fungi was 80.43%, while the contamination rate was only 7.14% under the conditions of nutrition medium of 25℃ and 14 days later. The superiority of this method was therefore simplicity, highefficiency and low contamination rate.

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Cited: Baidu(1)
Effects of PEG stress on seed germination and seedling physiology of  Malus robusta
WU Li-Yun, CAO Bang-Hua, SHAO Wei, XIE Wen-Ke, LI Tao, XU Dan
J4    2011, 24 (1): 36-39.  
Abstract1096)      PDF(pc) (786KB)(1976)       Save

       We investigated the influences of drought stress on the seed germination and seedling physiology of Malus robusta, which was simulated with different concentrations of PEG solution. Results show that the relative germination rate, germination potential, germination index and vigor index of the seeds processed with PEG decrease with the increase of stress intensity. SOD activity of the seedlings increases with the increase of PEG concentration, while POD activity demonstrates the opposite tendency. MDA and proline content increase with the increase of stress intensity. This indicates that higher PEG concentration cause worse damage to the seedlings of Malus robusta.

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Construction of a stable composite microbial system of a group of cellulosedegrading bacteria under constant temperature and its functionalities
ZHANG Rui-Qing, SUN Yan-Xia, YUAN Tang-Yu, ZHANG Wei, ZHAO Ming
J4    2011, 24 (1): 40-44.  
Abstract991)      PDF(pc) (731KB)(1988)       Save

          We obtained 23 strains of cellulosedegrading bacteria with rapid growth, big transparent ring and stable performance, which were isolated and screened from natural decay residues.We then acquired a stable composite microbial system of cellulosedegrading bacteria under constant temperature constituted by 14 effective and stable cellulosedegrading bacteria through determination of cellulosedegrading rate and backscreening. This system has 40. 7% stable wheatstraw degrading rate in 96 hours under constant temperature. 

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Influence of collision energy on the dynamics characteristicsof the elemental reaction He+H2+(v=3,j=1)
ZHAO Lian-Qing, LIU Xin-Guo, ZHANG Qing-Gang
J4    2011, 24 (1): 45-50,60.  
Abstract1000)      PDF(pc) (860KB)(2136)       Save

       We theoretically investigated the cubic dynamics characteristics of the reaction He+H2+ with quasiclassical trajectory (QCT) method and a new potential energy surface (PES). Results show that integral section fits well with the experimental results. Product HeH+ demonstrates different rotational polarization characteristics for different collision energies. Its rotational angular momentum vectors j′ are not only aligned, but also oriental. Product HeH+ tends to be scattered forward with the increase of collision energy.

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Transport properties of two dimensional circular billiards in weak magnetic field
BIAN Hong-Tao, ZHANG Yan-Hui, JIANG Guo-Hui, XU Xue-You, LIN Sheng-Lu
J4    2011, 24 (1): 51-54.  
Abstract1006)      PDF(pc) (750KB)(2010)       Save

         We investigate the transport properties of a open circular quantum billiard in weak magnetic field with a semiclassical theory. We also obtain the elements of transmission matrix with semiclassical approximation Green′s function and eigenfunctions. We further calculate classical trajectories of an electron, and compare the quantum spectral peak positions of transmission matrix elements with the length of electronic classical orbit.Results show that the peak positions are well consistent with the orbit length. This demonstrates that the heterojunction is a good theoretical model to describe the microstructure of electron conduction.

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Effects of sputtering time on the structure and morphology of β-FeSi2 film made with pulsed laser deposition
MA Yu-Yang, LIU Ai-Hua, LIU Mei, XU Shi-Cai, HOU Juan, GUO Jin-Jin
J4    2011, 24 (1): 55-60.  
Abstract1479)      PDF(pc) (1684KB)(1884)       Save

        We made uniform single phase β-FeSi2 films on Si (100) substrate with a Nd:YAG pulsed laser of 1064 nm (output wavelength), pulsed laser deposition (PLD) and thermal annealing process. We further investigated the structure and surface morphology with atomic force microscope (AFM),scanning electron microscope (SEM) and X-ray diffraction (XRD) method. Experimental results show the crystallization degree, size and shape of the grains and surface roughness are all regularly changed with the increase of sputtering time. We discovered that 40 minutes is the optimal sputtering time under the present experimental conditions after comparing the different sputtering time.

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Sufficient conditions of a λ4- optimal and super -λ4 graph
GAO Jing-Zhen, MA Yu
J4    2011, 24 (1): 61-64.  
Abstract1335)      PDF(pc) (745KB)(1897)       Save

      Let G be a finite, simple and undirected graph and U be its edge subset If G - U is disconnected and each component of G - U contains at least four vertices, then such an edge set is 4-restricted edgecut of G. The 4-restricted edgecut U whose cardinality is the smallest is called a λ4- cut, and its cardinality is called the 4-restricted edgeconnectivity, denoted by λ44(G) . G is  λ4- optimal if λ44(G)  and super -λ4  if every λ4-cut isolates a connected subgraph of order 4. This paper presents some sufficient conditions for a λ4- optimal and super -λ4 graph with the neighborhood intersection condition.

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Cycle extensibility of a almost locally connected [4,2]-graph
ZUO Cheng-Long, WANG Jiang-Lu
J4    2011, 24 (1): 65-67.  
Abstract1369)      PDF(pc) (729KB)(1983)       Save

          A graph G is a[s,t]- graph if there are at least t edges in its every included subgraph of s vertices.This paper proves that any cycle C satisfying 5≤|C|≤|G| is extendable in a almost locally connected [4,2]- graph. 

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Hamilton cycles of 2-connected [4,1]-graphs
ZHANG Wei, WANG Jiang-Lu
J4    2011, 24 (1): 68-71.  
Abstract1272)      PDF(pc) (748KB)(1887)       Save

       A graph G is a [s,t]- graph if there are at least t edges in every included subgraph of s vertices. This paper proves that the sufficient and necessary condition of a 2-connected [4,1]- graph to be a Hamilton cycle is that it is not isomorphic to three kinds of specific graphs.

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Neural network based assessment of pharmacological effects of traditional Chinese medicine
HOU En-Guang, LI Shu-Bin, LI Ke, DING Xiao-Yan, LV Ling, LIU Qing, ZHAO Bo-Nian, XU Zong-Yuan
J4    2011, 24 (1): 72-76.  
Abstract1661)      PDF(pc) (749KB)(2158)       Save

         How to impersonally and effectively assess the pharmacological effects of traditional Chinese medicine (TCM) is one of the difficulties confronting the modern research of TCM. This paper establishes a neural network model for the assessment of pharmacological effects of traditional Chinese medicine Huang Qin. We train this model with massive data and adjust its model parameters. We therefore construct a union effect assessment system for the traditional Chinese medicine Huang Qin. Test results show the advances and reliability of this method.

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Application of least squares curve fitting in wavelength interrogation of fiber Bragg grating
ZHAO Lin, LIU Tong-Yu, NI Jia-Sheng, SONG Zhi-Qiang
J4    2011, 24 (1): 77-80,96.  
Abstract1250)      PDF(pc) (789KB)(1929)       Save

        We perform curve fitting with the principle of least squares, which is based on the analysis of the wavelength detection of spectrum interrogation center. We construct an optimal generic polynomial spectrum fitting model with experimental data. This model is further applied to the curve fitting and simulation of individual central wavelength of acetylene absorption spectrum. Experimental results show that this model can reduce the drift of central wavelength and increase the accuracy of detection.

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A nonsubsampled contourlet transform based adaptive watermarking algorithm for image authentification
LIU Dong-Yan, SUN Ji-Chang, LIU Yan, TANG Yong-Zuo
J4    2011, 24 (1): 81-85.  
Abstract1011)      PDF(pc) (1000KB)(1902)       Save

        We present a semifragile nonsubsampled contourlet transform (NSCT) based watermarking algorithm for image authentification. We embed watermark in the singular values (SVs) of the blocks within lowfrequency subbands of NSCT by an adaptive quantization method. Watermark extraction is available only with a key constructed by chaotic signal initial value and quantization parameters. Subbands of individual scale and individual direction all have the same size as those of the original image. This algorithm can improve the tampering localization capability without causing remarkable manmade trace. Experimental results show that this algorithm is robust to JPEG compression but extremely sensitive to malicious operations.

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Application of image color management in typesetting software
ZHANG Dong-Sheng, YIN Jian-Min, ZHANG Yu-Hong
J4    2011, 24 (1): 86-88.  
Abstract952)      PDF(pc) (715KB)(2373)       Save

        We structurally analyze the color profiles of a device and employ ICM2.0 in Windows to show the real image on a screen. We therefore implement the real consistency of the color of an image between typesetting software and image editing software.

 

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Cited: Baidu(1)
A B/S structure based clinical database management system for orthopedics of traditional chinese medicine
LI Chuan-Li, CAO Hui, MA Jin-Gang, HU Zhi-Shuai
J4    2011, 24 (1): 89-92.  
Abstract1080)      PDF(pc) (762KB)(1987)       Save

         We develop a B/S structure based clinical database management system for Orthopedics of traditional Chinese medicine in view of the status quo of not enough utilization of vast amount of orthopaedics and traumatology literature and clinical data. This system can collect Orthopedics of traditional Chinese medicine related clinical data and some important literature and can effectively analyze, summarize and manage them.

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An improved variable neighborhood search based solution to the k-card inality tree problem
DONG Wei
J4    2011, 24 (1): 93-96.  
Abstract1138)      PDF(pc) (733KB)(1869)       Save

        This paper applied variable neighborhood search (VNS) algorithm to the solution ofk-card problem. This paper also defined a new neighborhood structure for the solution space, and improved the algorithm.  This increased the search speed of feasible solutions in the neighborhood, and improved the quality of the approximate solutions. This algorithm was compared with the present neighborhood structure based VNS algorithm. Experimental results show its effectiveness for thek-card problem.

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Mechanism design and kinematics analysis of a four axis stacking robot
SUN Jie, LI Qian, LIU Guang-Liang, GE Zhao-Bin, LI Xiang-Dong
J4    2011, 24 (1): 97-101.  
Abstract1937)      PDF(pc) (855KB)(3424)       Save

            We design a fouraxis balance hoist based palletizing robot to satisfy the requirement of logistics automation to robot palletizer. We analyze the kinematic characteristics for the arms of the robot and further obtain an optimal equation of its linkage mechanism. Experimental results show that such a robot can satisfy the requirement of logistics automation.

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Implementation of data communications in the control system of a .NET based completely automatic tester
ZHANG Yan-Fang, ZHENG Jiang-Hua, LIU Guang-Liang, LIU Cheng-Ye, LI Qian
J4    2011, 24 (1): 102-105.  
Abstract1475)      PDF(pc) (718KB)(1966)       Save

         We implement serial communications between PC and DVP Series PLC in the control system of a completely automatic tester with the internal SerialPort class of C# and .NET based C#. This can increase the flexibility of serial communications program design and the reliability of data transmission through serial ports. Application results show that the transmitted data is accurate and reliable and the program runs stably.

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Research on steel tubes blind ends reduction in eddy current fault detection through type coil round
ZHAO Hong-Xian, LI Qing-Zhuo, SUN Ji-Hua, HAN Xiao-Hua, DONG Xin, MENG Ling-Hua, HUANG Xu-Ping, WANG Bei, MA Jian
J4    2011, 24 (1): 106-108.  
Abstract1355)      PDF(pc) (732KB)(2035)       Save

          We reduce the blind ends of steel tubes in eddy current fault detection by the automatic control over the gain of a preamplifier and performance improvement of a bandpass filter for the characteristic of strong signal generated at the end of a steel tube. We can detect the steel pit at the 103 mm away from one end of a steel tube of diameter 168 mm and thickness 6 mm.

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A neighborhood condition of a super -λk trianglefree graph
HUANG Li, GAO Jing-Zhen
J4    2011, 24 (2): 1-5.  
Abstract1042)      PDF(pc) (1082KB)(1714)       Save

Let  k be a positive integer, and G be a connected trianglefree graph of order n≥2k. We prove that  G is a superk graph or Kk+1,n-k-1 if each pair of nonadjacent vertices u,v satisfy |N(u)∩N(v)|≥k+1.This result can be applied to the analysis of network reliability.

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Linear Recursive Sequences and Polynomial Ring
SONG Guang-Ai
J4    2011, 24 (2): 6-7.  
Abstract1107)      PDF(pc) (1004KB)(1818)       Save

      This paper presents an intrinsic relation between a linear recursive sequences and a polynomial ring,and give out a correspondence between linear recursive sequences and an idea of polynomial ring with one variable.

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Function mechanism of two estrogen receptors and an inhibitor
LI Long-Fei, SUN De-Fu, ZHANG Shao-Long, ZHANG Qing-Gang
J4    2011, 24 (2): 8-13.  
Abstract1487)      PDF(pc) (1417KB)(1983)       Save

       We performed 12 ns molecular dynamics simulation for estrogen receptor ERα and ERβ and inhibitor 244. We also calculated their binding free energy with the method of MMPBSA. Such energy of inhibitor 244 and receptor ERα is -30.11 kJ/mol, and the energy of inhibitor 244 and receptor ERβ is -33.32 kJ/mol. Electrostatic repulsion between Met421 side chain in of ERα and the inhibitor changes the conformation of Met421 Leu346 and Phe425. This causes bigger binding cavity and further decreases the binding of ERα and the inhibitor. Free energy decomposition calculation indicates the contribution of individual residue to the free energy.

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A molecular phylogenetic analysis of the endolichenic fungi of Umbilicariales
LI Ming, WANG Hai-Ying, ZHAO Zun-Tian
J4    2011, 24 (2): 14-20.  
Abstract1171)      PDF(pc) (1312KB)(2107)       Save

        We acquired 33 melanized fungi isolated from 21 specimens of 13 Umbilicariales from China and U.S. ITS nrDNA sequences based analysis indicates that all these fungi belong to 12 Capronia species. Analysis results also show that these fungi may be constant endophytic fungi and some selections exist between them and their host fungi. Different members of the same species of endophytic fungus may colonize in identical lichen for many times. Most of these endophytic fungi are close relatives of freeliving saxicolous fungi, not the extenders of endophytic fungi in lichen.

 

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Cited: Baidu(5)
Research on pollen submorphology of Lilium
YANG De-Kui
J4    2011, 24 (2): 21-23.  
Abstract1239)      PDF(pc) (1576KB)(2149)       Save

        We investigate pollen morphology of 3 species and 1 variety of Lilium L.with scanning electron microscope (SEM). Results show that these pollen grains are ellipse and monocolpate and that significant distinction exists in size and exine sculpture among different species.

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Research on nutrient components of different species of Chaenomeles speciosa Nakal
ZHANG Heng, GENG Yan-Ling, WANG Dai-Jie, LIU Jian-Hua, WANG Xiao, DU Jin-Hua, LI Sheng-Bo
J4    2011, 24 (2): 24-27.  
Abstract1772)      PDF(pc) (977KB)(2169)       Save

         We determined and analyzed protein,total sugar,total acid,pectin, vitamin,amino acids,inorganic salt and mineral elements of 14 species of Chaenomeles speciosa Nakal. The content of their total sugar is in the range of 1.3~3.5 g/100 g; the content of their amino acid is rich and can reach 0.26 g/100 g~0.50 g/100 g; the content of their vitamin C is in the range of 68.8~159.3 mg/100 g, significantly higher than other common fruits. The content of their mineral elements is richhigher kalium and lower sodium. The content of these nutrient components in Jinbao is significantly superior to the other species. Experimental results show the content of nutrient components of Chaenomeles speciosa Nakal is rich and these fruits are worth being explored and utilized, especially for Jinbao.

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Isolation and identification of a carbendazim-degrading strain and its degrading characteristics
HUANG Yu-Jie, ZHANG Xin-Jian, REN Yan, LI Ji-Shun, ZHANG Guang-Zhi, YANG He-Tong
J4    2011, 24 (2): 28-34.  
Abstract1290)      PDF(pc) (1410KB)(2222)       Save

       We obtained a strain dj1-11 from carbendazimcontaminated soil, which had better carbendazim degradation function. It was identified as Rhodococcus erythropolis through physiological and biochemical identification and contrast analysis of 16S rDNA sequences. Experimental results show that trace nitrogen source adding can improve carbendazim degradation. Carbendazim can serve as its unique carbon source and degradation rate can reach 99.15% under the condition of incubation in mineral salt medium of 1000 μg/mL carbendazim , temperature 28℃ and 48h shake bed.It can effectively degrade carbendazim at the pH value of 4~9 and temperature 20~30℃ (optimal degradation temperature).

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Cited: Baidu(18)
Selection and cooperative functionality of two groups of cellulose degrading microbial communities MC-1 and MC-1 with different degradation effects
ZHANG Rui-Qing, YUAN Tang-Yu, SUN Yan-Xia, LIU Ke-Ning
J4    2011, 24 (2): 35-40.  
Abstract1298)      PDF(pc) (1145KB)(1659)       Save

         We screen two groups of composite microbial systems, MC-A1 and MC-N1, with stronger cellulose degrading capabilities from homemade compost heap and several natural fermentation materials by regular regeneration during incubation. MC-A1 is a composite thermophilic aerobic cellulolytic microbial community which is acquired by a subculture technique of shakeflaskfermentation broth, while MC-N1 is another composite microbial community with thermophilic anaerobic cellulolytic capability which is obtained by static cultivation and regular regeneration. It is discovered that the degradation rates of communities MC-A1 and MC-N1 for wheatstraw powder can reach 42% and 38% within 96 h. Their quickest degradation rates occur between 48 h and 96 h, but these rates steeply decline after 96 h.This degradation rate can reach 47% by incubation of MC-A1 through 96 h shakeflaskfermentation and then incubation of MC-N1 through 96 h static cultivation. This demonstrates that these two cellulolytic microbial communities show cooperative function in the course of the degradation of nonnatural cellulose.

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Research on coal mine cloud connection platform of fiber internet of things
HOU Pei-Hu, FU Xiao-Ning, WANG Ying, CHENG Zhi-Yong, NI Jia-Sheng, LIU Tong-Yu, WANG Hong-Chun
J4    2011, 24 (2): 41-46.  
Abstract1906)      PDF(pc) (1373KB)(2224)       Save

       We originally propose and design a universal interface for fiber internet of things in view of the issue of difficult fiber sensors fusion in a fiber sensor system in coal mine safety detection. We also construct a cloud connection platform for fiber internet of things with photoelectronic detection, embedded electronics and communications technology. Many optic fiber sensors can be communicated and fused by this platform, so we can construct a coal mine internet of things to improve the level of coal mine safety detection.

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Cited: Baidu(1)
A new optical fiber pressure sensor for oil well application
LV Jing-Sheng, GUO Shi-Sheng, WANG Chang, YAN Bo
J4    2011, 24 (2): 47-50.  
Abstract1576)      PDF(pc) (1072KB)(2407)       Save

       Temperature and pressure are two significant reasons directly affecting oil production rate. This paper presents a new Fiber Bragg Grating (FBG) based pressure sensor for oil well application.This sensor breaks through domestic laboratory limitations for the oil well application of a pressure sensor and is quite significant for the increase of oil production rate. Its performance parameters are measurement range of greater than 50 MPa, working temperature of -20~170℃, measurement accuracy of 0.5%FS, and pressure coefficient of up to 41.92 pm/MPa after encapsulation. This sensor has such positives as online, realtime and longterm detection for the temperature and pressure in an oil well, simple structure, high measurement accuracy, intrinsic safety and easy networking.It has been applied to the Tianjin experimental well of China National Offshore Oil Corporation (CNOOC).

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Cited: Baidu(1)
Application of wavelet analysis based ant colony algorithm in image edge extraction
ZHU Li-Qi, GAO Kang-Lin, GAO Ming-Jun
J4    2011, 24 (2): 51-55.  
Abstract1093)      PDF(pc) (1550KB)(2053)       Save

        Object edge, an important image characteristic, is quite significant in the processing and recognition of an image. Noise and multiple interferences overlaid in the acquisition of an image blur the edge of the image and impair the extraction effect. We therefore present an adaptive median filtering and wavelet decomposition and reconstruction based ant colony algorithm for edge extraction of an image in practice. Vast experiments show that the algorithm can well suppress noise and has better edge extraction effect.

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An ontology based information retrieval approach
XING Xiao-Hui, MU Yi-Jun
J4    2011, 24 (2): 56-60.  
Abstract1010)      PDF(pc) (995KB)(1630)       Save

       This paper presents an ontology based information retrieval model and further increases the comprehension capability of a system to a natural language document by constructing a domain ontology. This paper also introduces design and use of its three abstract layers. This paper eventually employs a polymerization function to consolidate and assess an inquiry result in order to acquire a wellmatched document with the result.

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Research advances of biodiesel green production techniques
JIN Fu-Qiang, LI Yan, WANG Jian-Mei, HU Su-Qin, CAI Fei-Peng, LIU Qiang
J4    2011, 24 (2): 61-64.  
Abstract1611)      PDF(pc) (969KB)(2712)       Save

        This paper surveys some biodiesel production techniques. We emphasize the green production technique of biodiesel. It includes heterogeneous catalyzed transesterification, supercritical fluid process, hydrodeoxygenation and its refining process oriented vacuum distillation, molecular distillation, supercritical fluid extractionfractionation, microfiliration membrane separation and ionexchange absorption. We also give some predictions on the development tendencies of biodiesel.

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Cited: Baidu(2)
Complex network based reliability analysis of urban road networks
YAN Wen-Cai, ZHANG Yu-Lin, ZHAO Mao-Xian, SONG Wei
J4    2011, 24 (2): 65-70.  
Abstract1509)      PDF(pc) (1316KB)(3374)       Save

        This paper employs the method of dual topology to convert a road segment into a node and an intersection into an edge of a network (topology structure conversion of a real road network) for the importance analysis of the roads in urban road networks.We further employ such parameters as node degrees of complex networks, edge betweenness and network reliability to assess the structure characteristics of an urban road system. We eventually put this evaluation method into practice for the connection reliability analysis of Jinan urban road system under these conditions of deliberate attack and random failure.

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Cited: Baidu(6)
DSP based analysis of a dualloopcontrolled inverter
KONG Xiang-Mei, REN Lan-Jie
J4    2011, 24 (2): 71-74.  
Abstract1275)      PDF(pc) (1023KB)(2461)       Save

        This paper presents a high performance controller DSP based inverter, which is a dualloopcontrolled (current and voltage loop controlled) system.Experimental results show that it has such advantages as small volume, high static accuracy and quick dynamic response.

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Performance optimization approach of a 4DOF palletizing robot
LI Xiang-Dong, ZHI Jian-Bin, LIU Guang-Liang, ZHANG Yan-Fang, LIU Cheng-Ye, LI Qian
J4    2011, 24 (2): 75-77.  
Abstract1115)      PDF(pc) (969KB)(2015)       Save

        A palletizing robot is a most commonly used robot in an automation workshop.Reasonable deployment scheme and logic control can effectively improve the performance of such a robot,and further improve the production efficiency.This paper addresses the performance optimization approach of 4DOF palletizing robot from optimal path based deployment scheme and average velocity based control.

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