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Optimization of the Culture Conditions of Kombucha Cellulose by Response Surface Methodology
Issue:
Volume 5, Issue 5, October 2017
Pages:
307-311
Received:
19 July 2017
Published:
19 July 2017
Abstract: Kombucha cellulose is a kind of secondary metabolites produced by microorganisms. It is a kind of extracellular polysaccharide which is linked with β-1,4 glycosides. Compared with lignocellulose, it is the key focus of the current research in society, with a complex three dimensional reticular structure,material-combining ability, good biocompatibility, high purity, outstanding water-holding capacity, whichcan play an important role in many areas. Optimization of culture medium by response surface method to determine the optimum Kombucha culture conditions. The optimum culture condition was: Black Tea 2.16g, sucrose 27.33g, bran 4.35g, inoculum 23.03%,culture 48h, under these conditions, the growth of biofilm thickness of Kombucha can reach 0.76cm. At the same time, the growth rate and the establishment of Kombucha Black Tea between sucrose, wheat bran and the inoculation amount of two polynomial model, the model can predict the growth status of Kombucha, can obtain the optimal conditions.
Abstract: Kombucha cellulose is a kind of secondary metabolites produced by microorganisms. It is a kind of extracellular polysaccharide which is linked with β-1,4 glycosides. Compared with lignocellulose, it is the key focus of the current research in society, with a complex three dimensional reticular structure,material-combining ability, good biocompatibi...
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The Study of Based on RAPD Molecular Markers in Celery Cultivars Relationship
Liu Pangyuan,
Zhang Baohai,
Zhao Hong,
He Weiming,
Wang Huijie
Issue:
Volume 5, Issue 5, October 2017
Pages:
312-316
Received:
1 August 2017
Published:
4 August 2017
Abstract: In this study, from forty different varieties of celery in different regions of China as test material, the scientific character of RAPD technology in the identification of celery cultivars was carried out in the verification and analysis technology. The results show that the RAPD can well distinguish the genetic relationship of celery varieties of far and near, is suitable for the analysis of celery cultivars relationship between simple and ideal DNA molecular marker technology. One of the thirteen bases of different length of primer RAPD technique in the analysis of celery cultivars relationship between definition and the number of bands have the obvious difference, method based identification as celery varieties with different genetic relationship.
Abstract: In this study, from forty different varieties of celery in different regions of China as test material, the scientific character of RAPD technology in the identification of celery cultivars was carried out in the verification and analysis technology. The results show that the RAPD can well distinguish the genetic relationship of celery varieties of...
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The Current Situation and Expectation of Beijing Vegetable Germplasm Resources
Liu Pangyuan,
He Weiming,
Zhang Baohai
Issue:
Volume 5, Issue 5, October 2017
Pages:
317-320
Received:
1 August 2017
Published:
4 August 2017
Abstract: This paper introduces the domestic and international situation and development trend of resource conservation, analyzed the current situation, existing problems and strategies for solving problems. for Beijing germplasm of vegetables resources. We should accentuate the consciousness and the important action of resource conservation, germplasm collection on agricultural research and production.
Abstract: This paper introduces the domestic and international situation and development trend of resource conservation, analyzed the current situation, existing problems and strategies for solving problems. for Beijing germplasm of vegetables resources. We should accentuate the consciousness and the important action of resource conservation, germplasm colle...
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The Reserch of Network User Account Security Problems and Solutions
Wang Chen,
Li Jianbei,
Li Shucheng,
Wang Yinhui
Issue:
Volume 5, Issue 5, October 2017
Pages:
321-326
Received:
1 August 2017
Published:
4 August 2017
Abstract: To improve the network service market, improve the information monitoring and filtering mechanism, to strengthen a sense of prevent and identify consciousness, using the security technology to protect the user's account. Proposed involving various types account detailed feasible safety protection scheme. Network user account security problems can be divided into account Settings, loopholes in management rules, improper operation and malicious steal four aspects are analyzed. At the same time, this paper also reveals the network account password security policy.
Abstract: To improve the network service market, improve the information monitoring and filtering mechanism, to strengthen a sense of prevent and identify consciousness, using the security technology to protect the user's account. Proposed involving various types account detailed feasible safety protection scheme. Network user account security problems can b...
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Building a Lifelong Education System to Promote the Popularization of Computer Education in Anshun
Chunhua Lu,
Xinhua Lu,
Fusong Chen,
Chuanhong Du
Issue:
Volume 5, Issue 5, October 2017
Pages:
327-330
Received:
1 August 2017
Published:
4 August 2017
Abstract: With the rapid development in the era of information, computer technology has become more and more important in the development of society, and the traditional one-time computer education cannot meet the learning needs of people, while the lifelong education gradually get widely well- known. Based on the computer education status of Anshun city nowadays, this paper discusses how to construct lifelong education system from theory and practice level, therefore propose to promote lifelong education initiatives.
Abstract: With the rapid development in the era of information, computer technology has become more and more important in the development of society, and the traditional one-time computer education cannot meet the learning needs of people, while the lifelong education gradually get widely well- known. Based on the computer education status of Anshun city now...
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Research on Universal Processing Framework of Multi-source Heterogeneous Data Integration in GIS Domain Based on Software Technology
Xu Qiang,
Fan Hong,
Dang XiaoHu
Issue:
Volume 5, Issue 5, October 2017
Pages:
331-339
Received:
7 August 2017
Published:
7 August 2017
Abstract: It is difficult to make fine-grained random call in GIS system development or data processing owing to the multi-source heterogeneity of spatial data. Moreover, to convert the data into a unified format easily can lead to the loss of the core attributes. In this paper, we discuss the translation methods among several different data formats, including attribute and business data , network data, CAD data, heterogeneous GIS spatial data, and domestic and foreign GIS data, etc, based on software technology like FME, MyFME, Arcgis, MessagePack package, crawling tools and so on. Then, we propose a universal processing framework for multi-source heterogeneous data integration in the GIS field, and verify the performance of the proposed framework through integrating several kinds of data.
Abstract: It is difficult to make fine-grained random call in GIS system development or data processing owing to the multi-source heterogeneity of spatial data. Moreover, to convert the data into a unified format easily can lead to the loss of the core attributes. In this paper, we discuss the translation methods among several different data formats, includi...
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A Method of Building 3D Vector Model for Plant Root
Chen Fuqiang,
Zhou Xuecheng,
Yang Zishang,
Wang Gaofeng
Issue:
Volume 5, Issue 5, October 2017
Pages:
340-347
Received:
7 August 2017
Published:
7 August 2017
Abstract: In order to achieve quantitative description and analysis of root architecture, a 3D vector model building method for plant root was proposed. Firstly, three data structures of root node, root branch and root system are designed. Secondly, according to the linear characteristic of root, the root skeleton points are extracted by the slice algorithm. Then, branch topological relations is established by using the path planning algorithm based on connectivity. Finally, the attribute parameters (radius, area, circumference, etc.) of the skeleton points are extracted by the method of branch slice. The results of the vector model are preserved in the three data structures of the root system, and the three-dimensional phenotypic detection of the root system is carried out using the model data. Through the analysis of the phenotypic test results, and compared with the manual measurement results, the verification of the proposed method of the feasibility and accuracy.
Abstract: In order to achieve quantitative description and analysis of root architecture, a 3D vector model building method for plant root was proposed. Firstly, three data structures of root node, root branch and root system are designed. Secondly, according to the linear characteristic of root, the root skeleton points are extracted by the slice algorithm....
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Quasi-cyclic Expansion Algorithm for Protograph LDPC Codes Based on PEG and PH
Ruiyan Du,
Qingping Zhou,
Fulai Liu,
Dong Wang
Issue:
Volume 5, Issue 5, October 2017
Pages:
348-354
Received:
13 August 2017
Published:
14 August 2017
Abstract: One of the important code of modern coding theory, the protograph LDPC code technology has been gained more and more attention due to its low encoding complexity, fast decoding speed, low BER, and simple optimization analysis process etc. the quasi-cyclic expansion algorithm of the protograph LDPC codes, named as PQCE algorithms, can complete the extension of protograph and eventually get the protograph LDPC codes. However, the existing PQCE algorithms may be with a low convergence rate, or exist many short cycles in the check matrix. To solve the above problem, a Quasi-cyclic expansion algorithm for protograph LDPC codes based on PEG and PH is proposed in this paper, referred as PEG-PH-PQCE algorithm. In the proposed algorithm, base matrix is acquired by PEG parallel edges elimination expansion algorithm during the first-step expansion of protograph. Then, the second-step expansion is completed, in which the initial index matrix is obtained by PEG quasi-cyclic expansion algorithm, and the check matrix is acquired by using the Hill Climbing algorithm to optimizing the initial index matrix. Simulation results demonstrate the effectiveness the validity of the proposed algorithm, such as, a small number of short cycles and high convergence rate, etc.
Abstract: One of the important code of modern coding theory, the protograph LDPC code technology has been gained more and more attention due to its low encoding complexity, fast decoding speed, low BER, and simple optimization analysis process etc. the quasi-cyclic expansion algorithm of the protograph LDPC codes, named as PQCE algorithms, can complete the e...
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Research on Spectrum Resources Spatial Reuse Algorithm Based on Game Theory in Cognitive Radio
Fulai Liu,
Zhenxing Sun,
Ruiyan Du,
Lei Shi
Issue:
Volume 5, Issue 5, October 2017
Pages:
355-361
Received:
13 August 2017
Published:
17 August 2017
Abstract: In cognitive radio system, spectrum reuse is one of the main methods to improve the utilization of spectrum resources. Nevertheless, it has been unable to further improve spectrum efficiency that the reuse is implemented exclusively from the dimension of frequency. Taking account of the problem of spectrum resource spatial reuse in addition to the reuse of frequency, and aiming at the problem of the network transmission power optimization based on spectrum resource spatial reuse method in cognitive network, this paper proposes a spectrum resource spatial reuse algorithm based on Game Theory. Game theory is used by the algorithm to establish a game model of spectrum resources spatial reuse. A price function based on the channel quality is introduced to ensure the fairness of cognitive user to allocate power in each channel. A successive over relaxation iteration algorithm is used to solve the Nash equilibrium. Simulation results confirm that the proposed algorithm not only has high reliable detection performance to reduce the total transmission power, but also can ensure the service quality of cognitive users.
Abstract: In cognitive radio system, spectrum reuse is one of the main methods to improve the utilization of spectrum resources. Nevertheless, it has been unable to further improve spectrum efficiency that the reuse is implemented exclusively from the dimension of frequency. Taking account of the problem of spectrum resource spatial reuse in addition to the ...
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The Affected Analysis of Pipeline Thermal Stress Under Different Support Conditions and Wall Thickness Based on Finite Element Simulation
Issue:
Volume 5, Issue 5, October 2017
Pages:
362-368
Received:
13 August 2017
Published:
17 August 2017
Abstract: When gas transmission pipelines are working, due to being heated or cold and expansion and contraction, the pipes will produce thermal stress. Thus the stress poses a threat to pipeline working. Therefore, this article will adopt the method of model simulation and establish a channel space finite element model, then the ANSYS finite element analysis software will be applied to the calculation of thermal stress of the pipelines.Finally, we will do some research and analysis of the factors affecting the thermal stress in pipeline.The results show that the temperature had a greater influence on the thermal stress of pipeline, when the larger internal and external temperature difference of the pipeline get, the greater thermal stress the pipes produce. Secondly, the wall thickness of pipelines also affects thermal stress. Under the condition of the constant pipe diameter, thermal stress produced by pipes becomes small with the increase of pipe wall thickness.Lastly, with the fixed constraint on one end of the pipeline, the produced thermal stress is significantly larger than unconstrained condition and situation of constraints on two ends, etc.So it is suggested that the space between anchor blocks on pipelines cannot be too small, which means we should minimize that condition of the fixed constraint on one end of the pipeline.
Abstract: When gas transmission pipelines are working, due to being heated or cold and expansion and contraction, the pipes will produce thermal stress. Thus the stress poses a threat to pipeline working. Therefore, this article will adopt the method of model simulation and establish a channel space finite element model, then the ANSYS finite element analysi...
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Overview of Improved Particle Filter Based on Integrated Navigation System
Xiao Jing Du,
Cong Liu,
Shao Yong Hu,
Huai Jian Li
Issue:
Volume 5, Issue 5, October 2017
Pages:
369-374
Received:
12 September 2017
Published:
14 September 2017
Abstract: Particle filter has some advantages in dealing with the problems of the state equation nonlinear and noise distribution non Gauss in Integrated Navigation System. The summary for improved method of particle filter would be beneficial to study the application of particle filter in integrated navigation field deeply and overcome the problems of particle degeneracy and sample impoverishment with particle filtering. The basic algorithm and theory of particle filter and the reasons of particle degeneracy are expounded and the development of particle filter at home and abroad is given, then a summary for different methods to improve the performance of particle filter (including increasing particle number, resampling technology, selecting the best importance density function, and improving particle filter based on Neural Network). Several improved methods can effectively improve the filtering performance and improve positioning accuracy, in the actual situation, according to different conditions of use to choose the appropriate method of improvement.
Abstract: Particle filter has some advantages in dealing with the problems of the state equation nonlinear and noise distribution non Gauss in Integrated Navigation System. The summary for improved method of particle filter would be beneficial to study the application of particle filter in integrated navigation field deeply and overcome the problems of parti...
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Comparison of Random Error Analysis Methods for Fiber Optic Gyro Based on Allan Variance
Du Xiao Jing,
Zeng Chun,
Li Huai Jian
Issue:
Volume 5, Issue 5, October 2017
Pages:
375-379
Received:
12 September 2017
Published:
14 September 2017
Abstract: It is an effective method to improve the performance of inertial instrument and the accuracy of inertial navigation system by analyzing the random drift of FOG (Fiber Optic Gyro). Allan variance FOG random error analysis method, through analyze and compare Allan variance of the original data, you can correctly evaluate the gyroscope performance indicators. In this paper, we introduce the several different random error analysis method of FOG based on Allan variance, and analyze the different Allan variance of the same group by writing the program, and more, compare the three common quantities of the FOG random error model. The results show that the modified Allan variance method obviously takes a lot of time in the processing time, but the "2k" Allan variance law is calculated more quickly. In the processing effect, the modified Allan variance method can get better calculation results. In general, the "k" Allan variance method and the smooth Allan variance method are more balanced in the computational time and the computational effect. Several Allan variance methods can effectively identify the random error components of FOG, in the actual situation, according to different conditions of use to choose the appropriate treatment.
Abstract: It is an effective method to improve the performance of inertial instrument and the accuracy of inertial navigation system by analyzing the random drift of FOG (Fiber Optic Gyro). Allan variance FOG random error analysis method, through analyze and compare Allan variance of the original data, you can correctly evaluate the gyroscope performance ind...
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Research on Coupling of Low Speed Straight-Flow Wind Tunnel Based on Ansys Workbench
Zhang Yifei,
Qiu Rongkai,
Shen Jiang
Issue:
Volume 5, Issue 5, October 2017
Pages:
380-384
Received:
12 September 2017
Published:
14 September 2017
Abstract: Introduction of research on coupling of low speed straight-flow wind tunnel based on ANSYS Workbench. Wind tunnel is a most important test method of aerodynamics research, in which the air velocity field and pressure field determine the test research level. A computational fluid dynamics simulation based on ANSYS Fluent is conducted on wind tunnel, together with a coupling analysis of the fluid and wind tunnel structure, which helps us make further research on wind tunnel’s air field and structure. This work contributes to better operating of test research and wind tunnel optimization design.
Abstract: Introduction of research on coupling of low speed straight-flow wind tunnel based on ANSYS Workbench. Wind tunnel is a most important test method of aerodynamics research, in which the air velocity field and pressure field determine the test research level. A computational fluid dynamics simulation based on ANSYS Fluent is conducted on wind tunnel,...
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Progress and Prospect of Research on Autonomous Vehicle
Pan Yuyan,
Shi Jianjun,
Shi Zeyu
Issue:
Volume 5, Issue 5, October 2017
Pages:
385-389
Received:
12 September 2017
Published:
14 September 2017
Abstract: The paper system combs the related concepts of autonomous vehicles, and describes the demarcation criteria of automatic driving vehicles. Summed up the status quo at home and abroad research, analyzes the existing problems and research methods. And its future development trend is forecasted.
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Case Analysis of Seismic Reinforcement of Historical Buildings----Based on Reinforced Concrete Frame Structure
Fan Tingting,
Hong Yan,
Liu Weidong
Issue:
Volume 5, Issue 5, October 2017
Pages:
390-398
Received:
12 September 2017
Accepted:
14 September 2017
Published:
18 September 2017
Abstract: China has a long history and has survived many excellent historical buildings, These historic buildings have inadequate capacity or do not meet the requirements of earthquake resistance and need to be reinforced. This paper briefly describes the seismic reinforcement method of concrete reinforced concrete structures at first, and then made a contrastive analysis on the historical buildings before and after the reinforcement. Finally, made a comment on the contradiction between the method of aseismatic reinforcement and the protection principle of historic buildings.
Abstract: China has a long history and has survived many excellent historical buildings, These historic buildings have inadequate capacity or do not meet the requirements of earthquake resistance and need to be reinforced. This paper briefly describes the seismic reinforcement method of concrete reinforced concrete structures at first, and then made a contra...
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Reconstruction of Village Landscape Based on the Characteristics of Ethnic Culture -- Taking Zhenshan Village in Huaxi District as an Example
Issue:
Volume 5, Issue 5, October 2017
Pages:
399-403
Received:
12 September 2017
Published:
18 September 2017
Abstract: With the gradual improvement of the living standard, also place the new rural construction, village landscape are not so good, however, in this paper, based on the research on guiyang Huaxi Town mountain village buie minority village, village landscape restoration by national culture means reshaping, let the village landscape unique, comfort, and explore a suitable for different from the conventional development new way to protect the ancient landscape, looking for a combination of visual landscape with the landscape characteristics of village landscape plan.
Abstract: With the gradual improvement of the living standard, also place the new rural construction, village landscape are not so good, however, in this paper, based on the research on guiyang Huaxi Town mountain village buie minority village, village landscape restoration by national culture means reshaping, let the village landscape unique, comfort, and e...
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