Table of Content

20 October 2011 Volume 24 Issue 5

  

Content

4-Dimethylaminobutyraldehyde diethyl acetal

FENG Run-Liang, CHEN Xiu-Yi, SONG Zhi-Mei, YUE Dong-Ling

J4. 2011, 24(5):  1-4. 

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      4-Dimethylaminobutyraldehyde diethyl acetal is a key intermediate for the preparation of anti-migraine drugs. Its synthesis technique significantly affects the production cost of anti-migraine drugs. We catalyzed the reaction of 1-bromo-3-chloro propane and dimethylamine solution with PEG as a phase transfer catalyst, and obtained 3-dimethylamino-1-chloro propane. 3-dimethylamino-1-chloro propane reacted with magnesium and Grinard reagent was acquired. We eventually obtained our target compound by the reaction of Grinard reagent and triethyl orthoformate. The total recovery rate of our target compound was 70.11%. The advantages of this method are simple operation, low environment pollution, high recovery rate and easy implementation.

Sensitivity analysis of the quality evaluation model of honeysuckle

CHENG Wei, LI Ke, WANG Zhi-Xue, LI Shu-Bin, HOU En-Guang, GAO Yan, WANG Liang, LIU Qing, ZHAO Bo-Nian, YU Zong-Yuan

J4. 2011, 24(5):  5-9. 

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      This paper performs sensitivity analysis of the quality evaluation model for honeysuckle. This quantitatively shows the influences of the variation of every common peak in the chromatography fingerprint atlas of crude medicine on pharmacological efficacy (antibacerial rate). This analysis provides a new and referential method for the quality evaluation of traditional Chinese herbal medicine.

Field efficacy test of biocontrol agent YKT41 and B418 against eggplant root-knot nematode disease

LI Shan-Mei, LI Ji-Shun, XU Wei-Sheng, CHEN Kai, YANG He-Tong

J4. 2011, 24(5):  10-13. 

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      We performed the field efficacy test of Azotobacter chroococcum YKT41 and Burkholderia vietnamiensis B418 to prove their biocontrol of eggplant rootknot nematode disease. Results show that the control efficacy of YKT41 and B418 is 72.8% and 75.6%, yield increased by 14.6% and 12.7%,under the condition of dosage employment of 2.0kg/667m2. These biocontrol agents therefore have better generalization value. Their activity depends on living microbe, and their activity sharply declines after no living microbe. Both biocontrol agents therefore must be employed within the guarantee period.

Construction of multifunctional bacterium strain of chlorpyrifos degradation and its bioremediation application

LI hong-Mei, ZHANG Guang-Zhi, ZHANG Xin-Jian, HUANG Yu-Jie, LI Ji-Shun, YANG He-Tong

J4. 2011, 24(5):  14-17. 

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      We constructed recombinant plasmid pUT-M by ligating mpd gene on a suicide plasmid pUT-Km1. We integrated mpd gene onto the chromosome of B.vietnamiensis B418 by triparental hybridization and obtained a multifunctional engineering stain. Experimental results show that the engineering stain retains its original activity of phosphorus or potassium decomposition and nitrogen fixation. The strain degrades chlorpyrifos in solution at a rate of 65% 48 hours later. Moreover, the strain can also degrade chlorpyrifos in simulated soil and the degradation rate can reach 91% 20 days later.

An application of fiber Bragg grating in the monitoring of railway roadbed deformation

SONG Zhi-Qiang, ZHANG Fu-Rong, ZHAO Lin, ZHOU Zhong, LIU Tong-Yu

J4. 2011, 24(5):  18-21. 

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       We develop a temperature-unaware fiber Bragg grating (FBG) displacement sensor in view of big labor-consumption in the monitoring of railway roadbed deformation and no acquisition of real-time road information. It has the measurement range of 100 mm and measurement accuracy of 0.1 mm. Data analysis of more than two months scene test shows that the designed sensor can reflect the real-time information of the railway roadbed deformation, especially for the information of the negative influence of precipitation on the rate of roadbed deformation.

An emitter coupled logic based digital delay system

WANG Zhong-Min, ZHAO Xin, WANG Feng-Gui, ZHANG Yan-Bo, YANG Chuan-Fa, ZHANG Lin

J4. 2011, 24(5):  22-25. 

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       This paper presented a novel digital delay system based on such positives as high conversion rate, low delay and high reliability of emitter coupled logic (ECL).The LVTTL signal,which was the output of FPGA and served as the input trigger signal, was transmitted to AD9500 after level conversion. The delayed output signal of AD9500 was converted back to LVTTL signal to be the ouput signal of the system terminal. Differential signal served as the input of the system, and terminal circuit was employed to process the transmitted signal. Test results show that the system achieves a delay resolution of 100 ps.

Effects of ZnO content on the crystallization and property of Li₂O-ZnO-SiO₂ glass

CHEN Li-Zong, WU Shou-Ping, TIAN Qing-Bo

J4. 2011, 24(5):  26-29. 

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     We addressed the effects of different ZnO content on the crystallization behavior and property of the Li₂O-ZnO-SiO₂ glass system with differential scanning calorimeters (DSC), x-ray diffraction (XRD) and scanning electronic microscope (SEM). Experimental results show that its precipitated phases are cristobalite, tridymite, Li₂SiZnO₄and SiO₂. The relative cristobalite content initially increases and then decreases with the increase of ZnO content. The cristobalite phase influenced thermal expansion coefficient α also initially increases and then decreases. The relative cristobalite content reaches the highest value when the ZnO content arrives at 21.1%.Its thermal expansion coefficient α reaches the maximum value of 19.13×10-6/℃ when the ZnO content arrives at 26.7%.

 

Status quo and development directions of high-power LED encapsulation materials

MU Qiu-Hong, LI Jin-Hui

J4. 2011, 24(5):  30-34. 

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        This paper surveys the global development status quo of power LED encapsulation materials.Based on the analysis of present applications of power LED encapsulation materials,we present the irreplaceable role,wide application prospect and huge economic benefits of origanic silicon encapsulation materials.We also indicate that the next development emphasis should be the increase of their refractive index, thermal conductivity and mechanical strength in view of the high-performance and high-reliability requirements of current LED industrial development for encapsulation materials.

Experimental research on anti-fatigue efficacy of peanut peptides in mice

PENG Wei-Bing, HE Qiu-Xia, LIU Ke-Chun, CHEN Xi-Qiang

J4. 2011, 24(5):  35-38. 

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       This paper addressed the anti-fatigue efficacy of peanut peptides in mice. We discovered that peanut peptides could prolong their load-carrying swimming time, reduce their blood lactic acid and urea nitrogen levels,increase the index of their organs,and also increase the content of their hepatic and muscle glycogen, as compared with blank control group. The anti-fatigue efficacy of the peanut peptides  with content of 400 mg·kg-1 was better than that of ginseng.

Research on carbohydrate in pea flour residue

HUANG Ya-Jie, YANG Yan, MENG Qing-Jun, ZHANG Li-Qun, SHI Jian-Guo

J4. 2011, 24(5):  39-41. 

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         Pea flour residue is the main waste of pea bean starchmade noodle factory． We determined crude protein, cellulose and starch content in pea flour residue, performed acid hydrolysis for pea flour residue and determined reducing sugar content in acid hydrolysis with automatic analyzer to recycle the pea flour residue. Determination results are crude protein content of 9.936%±0.0483 %, cellulose content of 21.78%±0.523 %, DE value of 11.35±0.296 and reducing sugar content of approximate 38 mg/dL.

Existence of positive periodic solutions of differential equations with parameters

LI Qian-Qian, LIU Yan-Sheng

J4. 2011, 24(5):  42-45. 

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       This paper proves the existence of positive periodic solutions of differential equations with parameters by the fixed-point theorem in cone theory.

he L(p,1T)-vertex labeling of graphs

WANG Yan, SUN Lei

J4. 2011, 24(5):  46-48. 

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       This paper relaxes the restriction conditions of a vertex of distance 2 and puts them on its spanning trees. We therefore presents a new labeling issue, and its general upper bound.

The (∈，∈∨q)- fuzzy bi-ideals of Γ- semigroups

YANG Guang, XU Xin-Zhai, LI Nan

J4. 2011, 24(5):  49-51. 

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       We generalize the concepts of some (∈，∈∨q)- fuzzy subsets to Γ- semigroups. We also introduce the concept of (∈，∈∨q)- fuzzy Γ- subsemigroup,(∈，∈∨q)- fuzzy bi-ideal and (∈，∈∨q)- fuzzy generalized bi-ideal into Γ- semigroups, and address their expressions with some theories of fuzzy sets. It is proved that the intersection and union of (∈，∈∨q)- fuzzy bi-ideals are still (∈，∈∨q)- fuzzy bi-ideals, and that every (∈，∈∨q)- fuzzy generalized bi-ideal of regular Γ- semigroups is a (∈，∈∨q)- fuzzy bi-ideal.

Design and implementation of a document management system

GU Li-Na, SONG Li-Hua, ZHANG Jian-Cheng

J4. 2011, 24(5):  52-55. 

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      We design a document management system with three-tier architecture. Its resource type and main functionalities are devised against the scenario of information system supervision. We also implement its main functionalities with web 2.0 and java, so its transportability is improved.

esearch on heterogeneous model based key cloud computing technologies

ZHANG Qing-Ke, YANG Bo, WANG Lin, CHEN Zhen-Xiang

J4. 2011, 24(5):  56-62. 

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        This paper presents a CPU-GPU heterogeneous parallel programming model based on the distributed programming technology of cloud computing, Map/Reduce. This paper also gives its principle and implementation process. It improves the efficiency of large-scale data processing with the multi-thread parallel mechanism, CUDA. We contrastively analyze two typical distributed storage systems, GFS and HDFS. We eventually present the threelayer architecture and basic type of virtualization technology.

Components oriented multi-source heterogeneous data integration technology

MA Qian, CAO Bao-Xiang, MA Zhao-Feng, LU Xiao-Feng

J4. 2011, 24(5):  63-66. 

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        This paper addresses a Mediator/Wrapper model based multi-source heterogeneous data integration approach, and poses a component-oriented multi-source heterogeneous data integration architecture to share heterogeneous data sources. This architecture divides data sources into many components to facilitate heterogeneous data sources query and hides the distinction of low-layer data sources by the free combination of different components. This enables users to seamlessly and flexibly access heterogeneous data. This effectively solves the sharing problem of heterogeneous data sources.

Research on intelligent interaction architecture of the internet of things

PU Hai-Tao, LIN Jin-Jiao

J4. 2011, 24(5):  67-70. 

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      This paper presents a context-sensitive merging based intelligent interaction architecture in the Internet of Things and the detailed description for all of its components. We therefore achieve the intelligent interactions between things and between users and physical world, which break through the boundary between virtualization and reality in pervasive computing and provide more intelligent computation and service. We eventually construct intelligent interaction architecture in smart grid system with the presented architecture, which proves the effectiveness of this architecture.

Research on internet traffic collection methods with practical information

ZHAO Cai-Yun, YANG Bo, PENG Li-Zhi, CHEN Zhen-Xiang

J4. 2011, 24(5):  71-75. 

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        We compare two traffic collection schemes, backbone based and host computers based traffic collection schemes, to precisely classify network traffic. We also address their main functions, the process of their traffic collection, and how to impress practical information on the collected traffic. We eventully present their advantages and disadvantages.

An application of improved association rules of an association graph in a recommendation system

WANG Lin-Lin, SHI Bing, HU Yuan, XING Hai-Hua

J4. 2011, 24(5):  76-80. 

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        This paper presents an improved association rule mining algorithm for the recommended system, and our definition for the page weights. We improve the association graph based association rules mining algorithm, and apply the page weights to the mining of association rules. This algorithm employs the data acquired after pretreatment to web log to mine the association rules. Page weights are obtained through the processing of such data with a normal distribution function. The algorithm then uses the page weights to recalculate the page support, which is applied to the improved rule mining algorithm. We can therefore acquire page weights based association rule algorithm of an association graph.

Design of a WSN based equipment operation information monitoring system

TANG Li

J4. 2011, 24(5):  81-84. 

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       This paper presents a sensor nodes, control nodes and gateway nodes constructed wireless sensor network to monitor the equipment operation information. This can be employed to monitor and intelligently control the operation status of many kinds of equipment.

Research on KICA and Relief algorithms combined face recognition

LI Xiu-Li, DONG Ji-Wen, WU Rui-Hai

J4. 2011, 24(5):  85-88. 

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       We employ improved k-nearest neighbor Relief algorithm to select features after extracting features with kernel independent component analysis (KICA) to make the extracted independent elements to be favorable to be recognized. This improved Relief algorithm can reduce noise pollution and address the issue of small samples, so the selected features can be employed to better classify faces. We prove the effectiveness of this method with the experiment to AR face database and comparisons with feature selection algorithms of intra- and inter-cluster distance.

Design of CAN bus based mine ventilation monitoring system

WANG Ting, XU Hui, ZHAO Xin-Qiu

J4. 2011, 24(5):  89-92. 

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       We designed a CAN bus based real-time mine ventilation monitoring system for monitoring the status of mine ventilation. We presented the design of monitoring node of CAN bus, PCI-CAN smart adapter card and its software. It communicates with a host monitoring computer by CAN bus and performs real-time monitoring for temperature and wind velocity of large number of nodes. It has such positives as longer transmission distance, more monitoring nodes, better real-time characteristic and higher reliability, as compared with other traditional mine ventilation monitoring system.

Research on NetFPGA application technology

WANG Ke-Ke, YANG Bo, SUN Ttao, CHEN Zhen-Xiang

J4. 2011, 24(5):  93-98. 

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       Network Field Programmable Gate Array (NetFPGA), a programmable device, has widely application prospect in computer, communications and high-speed networks. This paper surveys its development course, and gives a thorough summary for its applications in quick route search, routing forward, string matching, content extraction and traffic classification of high-speed network switch, communications and information processing, etc. This paper also presents its application advantages of high speed, parallel and real-time processing and its application disadvantage of lack of flexibility. The paper eventually addresses the feasibility that assembly line design and modularization are employed to overcome this disadvantage.