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The Dynamics Analysis of Multiscale Eigenelement Method on Periodic Composite Materials
Issue:
Volume 5, Issue 6, November 2017
Pages:
404-409
Received:
25 October 2017
Published:
27 October 2017
Abstract: As the composite materials and structures are widely used in aerospace, it is necessary to develop more precise and higher efficient methods to predict the mechanical properties and behaviors of the composites for application. The multiscale eigenelement method (MEM) can be implemented to analysize the periodic composite materials. This paper has reserched the MEM accuracy and mechanical behavior, and deduced the dynamics analytical solution of periodic composite materials. Compared the influence to the accuracy of different model numbers. As for the problems of multiscale eigenelement method, we put forward unit cell modal method. The results of the numerical calculation indicate the effectiveness and feasibility of the unit cell modal method.
Abstract: As the composite materials and structures are widely used in aerospace, it is necessary to develop more precise and higher efficient methods to predict the mechanical properties and behaviors of the composites for application. The multiscale eigenelement method (MEM) can be implemented to analysize the periodic composite materials. This paper has r...
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Research on Pedestrian Navigation Algorithm Based on MEMS Inertial Devices
Chen Zhaoyi,
Du Xiaojing,
Li Huaijian
Issue:
Volume 5, Issue 6, November 2017
Pages:
410-415
Received:
25 October 2017
Published:
27 October 2017
Abstract: Pedestrian navigation system (PNS) is also known as the walker navigation system, which is mainly used to track and posit real-time position of walker, to provide walk speed and position of walker, and also be applied to military, science, sport, rescue, the blind navigation, electronic product, etc. GPS signal is unreliable and difficult to provide accurate location information in most environments such as indoor, urban streets and canyons. At this point, the autonomous navigation system based on the proposed algorithm is a good solution. This article mainly analyzes the MEMS inertial device in the actual engineering practice, the application of the low precision of MEMS inertial device used in personal navigation correction algorithm, and combines the MEMS inertial sensors and GPS receiver, satisfies the requirement of pedestrian positioning. Using the complementary filter to fuse sensor data, we can obtain information of high precision orientation.
Abstract: Pedestrian navigation system (PNS) is also known as the walker navigation system, which is mainly used to track and posit real-time position of walker, to provide walk speed and position of walker, and also be applied to military, science, sport, rescue, the blind navigation, electronic product, etc. GPS signal is unreliable and difficult to provid...
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Implementation of 3D Graphics and Image Algorithm Using Matlab
Issue:
Volume 5, Issue 6, November 2017
Pages:
416-419
Received:
25 October 2017
Published:
28 October 2017
Abstract: Computer graphics and image processing are hot topics in the academic and engineering fields. There are many algorithms for three-dimensional graphics rendering and image processing which using C language or JAVA language is difficult to achieve. Therefore, the use of MATLAB to achieve three-dimensional graphics rendering algorithms and image processing algorithms. Some examples are given to illustrate and discuss some research work. For some experimental work, MATLAB has many advantages, and it is a better experimental tool platform.
Abstract: Computer graphics and image processing are hot topics in the academic and engineering fields. There are many algorithms for three-dimensional graphics rendering and image processing which using C language or JAVA language is difficult to achieve. Therefore, the use of MATLAB to achieve three-dimensional graphics rendering algorithms and image proce...
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Research on Inductive Laminated Stereoscopic Teaching Model
Issue:
Volume 5, Issue 6, November 2017
Pages:
420-422
Received:
25 October 2017
Published:
28 October 2017
Abstract: The study of education is a persistent and long-term task, as is the study of higher education. This paper discusses the teaching mode, research status, purpose, significance and implementation methods of inductive leadership. On this basis, in view of the current situation of higher education in China, it is suggested to strengthen the use of inductive methods. In the course of some courses, the teaching model is embedded, and the stereoscopic teaching model is constructed. According to the specific circumstances of the school, we conduct a small range of experimental teaching, sum up the improvement and explore the update.
Abstract: The study of education is a persistent and long-term task, as is the study of higher education. This paper discusses the teaching mode, research status, purpose, significance and implementation methods of inductive leadership. On this basis, in view of the current situation of higher education in China, it is suggested to strengthen the use of indu...
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The Application of Element Potential Diagram in Elemental Chemistry Experiment Teaching
Hu Tianjiao,
Wang Qinghua,
Li Gongyi
Issue:
Volume 5, Issue 6, November 2017
Pages:
423-425
Received:
25 October 2017
Published:
28 October 2017
Abstract: In the elemental chemistry experiment, the elemental potential diagram is used to analyze and predict the chemical reaction and experimental phenomena. It helps the students to find the essence of chemical reaction and to solve the problem by using basic principles. Moreover, it also stimulates students' interest in learning elemental chemistry.
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An Analysis of Informal Academic Exchange Based on the Emuch Net
Issue:
Volume 5, Issue 6, November 2017
Pages:
426-433
Received:
16 November 2017
Published:
21 November 2017
Abstract: The rapid development of information technology of today, informal academic exchanges are increasingly attracted people's attention, non-academic communication refers to the information producers and users directly between the exchange, do not need to rely on scientific literature to communicate the exchange. How to increase the exchange of students and enhance the academic level through the use of informal communication is a topic that we need to study. In this paper, we find the social network analysis of the research area of the Emuch Net research and living area, and study the characteristics of the interaction behavior of the researchers in the work forum, explore the communication situation of the insects, discover the problems and provide some suggestions for the follow-up development The reference value.
Abstract: The rapid development of information technology of today, informal academic exchanges are increasingly attracted people's attention, non-academic communication refers to the information producers and users directly between the exchange, do not need to rely on scientific literature to communicate the exchange. How to increase the exchange of student...
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On Primary Mathematics Teaching from the Perspective of Performance Technology
Issue:
Volume 5, Issue 6, November 2017
Pages:
434-437
Received:
16 November 2017
Published:
21 November 2017
Abstract: In the mathematics teaching of primary school in China, the teaching of teachers makes students only solve the problems in books, but not solve similar problems in real life. The students lack of life common sense and the knowledge of the application. They have no sensitivity to mathematical knowledge in real life and can not apply the knowledge in practice. The problem is worthy of the attention of teachers. This paper will examine the mathematics teaching of primary school from the perspective of performance technology, analyze the existing problems and put forward corresponding solutions.
Abstract: In the mathematics teaching of primary school in China, the teaching of teachers makes students only solve the problems in books, but not solve similar problems in real life. The students lack of life common sense and the knowledge of the application. They have no sensitivity to mathematical knowledge in real life and can not apply the knowledge in...
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The Literature Review of Text Data Mining
Issue:
Volume 5, Issue 6, November 2017
Pages:
438-443
Received:
16 November 2017
Published:
21 November 2017
Abstract: At present, the study of structured data analysis, researchers at home and abroad mainly focus on the learners in the network teaching environment, with diversified interactive learning mode, text based nonstructured data is generated continuously. In recent years, through the mining of text data to evaluate the learner's ability and knowledge of psychology and screening the behavior has become a new learning method. Firstly introduces the concept and technology of text data mining, then introduces the tools and methods of text mining in the mainstream, finally expounds the present situation of the application of text mining technology in natural and Social Sciences in the two fields and 6 application analysis, namely curriculum evaluation support learners, knowledge and ability, learning community groups, learning behavior of crisis early warning, forecasting learning effect and learning state visualization.
Abstract: At present, the study of structured data analysis, researchers at home and abroad mainly focus on the learners in the network teaching environment, with diversified interactive learning mode, text based nonstructured data is generated continuously. In recent years, through the mining of text data to evaluate the learner's ability and knowledge of p...
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Study on Building Service-Oriented Environment Management Model Under the Synergistic Demand of Environment Protection and Industrial Upgrading
Issue:
Volume 5, Issue 6, November 2017
Pages:
444-449
Received:
16 November 2017
Published:
21 November 2017
Abstract: At first theoretically analyzes dialectical relation among management model transformation, improving environment protection effect and boosting industrial upgrading, then discusses the significance of building service-oriented environment management model from nationality, necessity and feasibility, points out that service-oriented environment management modelshould be built under the principle of strict environment governance, win-win result between environment and development can be got only if the balance between governance and service is kept and environment management model is scientifically innovated. At last, according to China’s reality, some strategies are given on building China’s service-oriented environment management model from ideology, superstructure, hardware improving, software perfection and treatment of special circumstances.
Abstract: At first theoretically analyzes dialectical relation among management model transformation, improving environment protection effect and boosting industrial upgrading, then discusses the significance of building service-oriented environment management model from nationality, necessity and feasibility, points out that service-oriented environment man...
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Prediction and Influence Factors Analysis of Forest Fire Risk Degree——A Case Study of Daxing'anling Area
Li Jing,
Yu Qian,
Cui Tiejun
Issue:
Volume 5, Issue 6, November 2017
Pages:
450-456
Received:
16 November 2017
Published:
21 November 2017
Abstract: Analyze the risk of forest fire and its influencing factors is of great significance, which can provide scientific basis for forecasting and controlling forest fires, so as to reduce economic losses and casualties. Based on vegetation index data and meteorological data from May 13 to 22, 2017, the forest risk rating was calculated using the evaluation criteria of forest fire hazard in Daxing'anling Area, and then the influencing factors of fire were analyzed. The results show that the reason for the spring fire in Daxing'anling Area is that the spring temperature is gradually increasing, but the precipitation does not increase synchronously, and thus resulting in low air humidity and dryness. Moreover, in spring and summer alternating date, there are usually strong atmospheric activity and high wind speed, which lead the forest fire risk increasing. In this weather conditions, the forest area can easily lead to fire, and the spread of the fire is also difficult to control. However, vegetation coverage increase could reduce the risk of fire. According to this algorithm, it is possible to predict the fire risk level in the forest area so as to determine the high probability of fire occurrence area, which could provides a reference for planning fire prevention measures and reasonable flight routes of UAVs for forest administrator.
Abstract: Analyze the risk of forest fire and its influencing factors is of great significance, which can provide scientific basis for forecasting and controlling forest fires, so as to reduce economic losses and casualties. Based on vegetation index data and meteorological data from May 13 to 22, 2017, the forest risk rating was calculated using the evaluat...
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Research on Chemical Properties of Pyrolysis Products of Gentamicin Residue
Jia Meng-meng,
Li Yi-fei,
Feng Li-hui,
Wang Zhi-qiang,
Ma Si-Lu,
Yang Jian,
Hu Jia-shuo
Issue:
Volume 5, Issue 6, November 2017
Pages:
457-462
Received:
16 November 2017
Published:
21 November 2017
Abstract: This paper selected gentamicin ferment residue in the tube furnace reactor for rapid pyrolysis experiments, the ferment residue and pyrolysis products (coke, tar) were analyzed by XPS, FTIR and GC-MS. FTIR analysis showed that the ferment residue and pyrolysis products mainly contain saturated alkanes and proteins, sugars and lipids. XPS results show that the pyrolytic coke is mainly C-C chemical bond, its content increased significantly from 55.07% to 72.27%, while the C-N bond from 18.21% to 5.8%. The chemical constituents of the pyrolysis oil were separated and identified by GC-MS. The identified materials could be divided into: aromatic hydrocarbons, phenol and its derivatives, esters, ketones, acids, amines, nitriles and some heterocyclic compounds; The effect of the pyrolysis temperature on the main components of pyrolysis oil was studied. It was found that the effect of temperature on the composition of the components was not significant, but the relative content of the components was significant. At the same time, the nitrogen-containing compounds in the pyrolysis oil are pyrrole, nitriles and indole, and the content is 9.93% -29.17%.
Abstract: This paper selected gentamicin ferment residue in the tube furnace reactor for rapid pyrolysis experiments, the ferment residue and pyrolysis products (coke, tar) were analyzed by XPS, FTIR and GC-MS. FTIR analysis showed that the ferment residue and pyrolysis products mainly contain saturated alkanes and proteins, sugars and lipids. XPS results sh...
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Improvement of Sol-gel Method and Influence of Calcination Conditions on Properties of MnOx-CeOx/WO3/TiO2-ZrO2 Catalyst
Huixian Pan,
Li Wang,
Shuanling He,
Jie Wang
Issue:
Volume 5, Issue 6, November 2017
Pages:
463-468
Received:
16 November 2017
Published:
21 November 2017
Abstract: Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resistance were investigated at low temperature. The results shown that mixing zirconium oxychloride with butyl titanate ethanol solution first and then titrating acetic acid inhibitor would have more Zr4+ substituted Ti4+ doping into the TiO2 lattice, resulting in more lattice defects and active sites. The surface morphology of carriers were all nano particles, but the carrier prepared by modified method shown smaller particle size and better dispersion. The catalyst which was calcined at 200°C for 2.5h exhibited best NH3-SCR performance, its denitrification activity reached 98% at 100°C, and the NOx conversion could be maintained at about 75% after continuously injecting SO2 (100ppm) for 8h.
Abstract: Modified sol-gel method was adopted to prepare TiO2-ZrO2 carrier of molar ratio 4:1, and the catalysts were prepared by impregnating with WO3 and MnOx-CeOx sequentially. The carriers and catalysts were characterized by X ray diffraction (XRD) and electron scanning electron microscopy (SEM), and their NH3-SCR denitrification activity and sulfur resi...
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Preparation and Characterization of Fe-N Co-doped TiO2 and Its Effect on Photocatalytic Oxidation of 2-MIB in Water
Liu Dan,
Yuan Rong-fang,
Zhou Bei-hai
Issue:
Volume 5, Issue 6, November 2017
Pages:
469-475
Received:
16 November 2017
Published:
21 November 2017
Abstract: The composite nanoparticles of un-doped, Fe-doped TiO2, Fe-N co-doped TiO2 were prepared by sol-gel method, and characterized by X-ray diffractomer, scanning electron microscope, and UV-Vis diffuse spectrometer. 2-methylisoborneol (2-MIB) was used as the model compound to investigate the photocatalytic activities of TiO2, and the effect of water quality on 2-MIB removal was also discussed. The results show that the prepared TiO2 was mainly anatase, and the band gap of TiO2 was narrowed and the absorption band moved to the visible direction after Fe3+-N3- doping. The best photocatalytic activity was achieved when 0.001% Fe-0.5% N co-doped TiO2 calcined at 500°C was employed, corresponding to the 2-MIB removal efficiency of 99.90% and pseudo-first order rate constant of 1.371 18 h-1 by photocatalytic oxidation process in 5h.
Abstract: The composite nanoparticles of un-doped, Fe-doped TiO2, Fe-N co-doped TiO2 were prepared by sol-gel method, and characterized by X-ray diffractomer, scanning electron microscope, and UV-Vis diffuse spectrometer. 2-methylisoborneol (2-MIB) was used as the model compound to investigate the photocatalytic activities of TiO2, and the effect of water qu...
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Discussion on Teaching of Element Chemistry in Inorganic Chemistry
Hu Tianjiao,
Li Gongyi,
Wang Qinghua
Issue:
Volume 5, Issue 6, November 2017
Pages:
476-478
Received:
5 December 2017
Published:
6 December 2017
Abstract: Base on the characteristics and teaching status of element chemistry, this paper discusses the relationship between teaching strategy and teaching results. In order to motivate the students' interest, cultivate students' creative thinking and improve the quality of teaching in element chemistry curriculum, we combined the teaching idea with the theory content, selected the content of lectures, and sorted out the key points of knowledges.
Abstract: Base on the characteristics and teaching status of element chemistry, this paper discusses the relationship between teaching strategy and teaching results. In order to motivate the students' interest, cultivate students' creative thinking and improve the quality of teaching in element chemistry curriculum, we combined the teaching idea with the the...
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Study on the Bactericidal Effect of Ortho-Phthalaldehyde Combination Disinfectant
Yi Jialin,
Niu Bing,
Deng Zhirui,
Chen Qin
Issue:
Volume 5, Issue 6, November 2017
Pages:
479-485
Received:
27 December 2017
Published:
28 December 2017
Abstract: This study used combination of ortho-phthalaldehyde(OPA) and quaternary ammonium surfactants (QAS) with different concentration to kill Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger conidia. The concentration of the combination disinfectant to kill Escherichia coli, Staphylococcus aureus and Candida albicans was 75mg/L OPA and 30mg/L QAS within 10 min, respectively. The average killing log value was above 4 when Aspergillus niger conidia was exposed in 3.75g/L OPA and 1.50g/L QAS for one hour. Then the effects of time, temperature and organic concentration on the bactericidal effect were measured. And the metal corrosion and stability of the combination disinfectant were determined. In addition, these results showed that the combination disinfectant had a high efficiency of bacteria killing and the concentration of organic affected its bactericidal effect. The average killing log value gradually increased along with the temperature within 10°C. to 40°C. And the combination disinfectant also has the advantages of low corrosive of metal, good stability and so on.
Abstract: This study used combination of ortho-phthalaldehyde(OPA) and quaternary ammonium surfactants (QAS) with different concentration to kill Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger conidia. The concentration of the combination disinfectant to kill Escherichia coli, Staphylococcus aureus and Candida albicans was 75...
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Multi-Atlas Segmentation of Mouse Brain MRM Based on Optimized Advanced Normalization Tools
Lin Lan,
Wang Jingxuan,
Fu Zhenrong,
Wu Xuetao,
Gu Kenan,
Wu Shuicai
Issue:
Volume 5, Issue 6, November 2017
Pages:
486-491
Received:
27 December 2017
Published:
28 December 2017
Abstract: In recent years, with the deepening of brain science research, mouse magnetic resonance microscopy (MRM) for neuroimaging research has gradually become a main research interest. Brain segmentation is an essential techniques for investigating the brain morphometry, while the traditional approach to segment a given brain involves the manual delineation of the ROIs by an expert. This practice can be slow and unscalable. Although automatic atlas-based segmentation approaches have been developed and validated for the human brain MRI, there is limited work for the mouse brain MRM. This paper combined optimized image registration and multi-atlas model for mouse brain segmentation. The results showed that multiple atlases with optimized geodesic-SyN can best improve the segmentation accuracy in the mouse brain, and registration algorithm plays important role in performance improvement.
Abstract: In recent years, with the deepening of brain science research, mouse magnetic resonance microscopy (MRM) for neuroimaging research has gradually become a main research interest. Brain segmentation is an essential techniques for investigating the brain morphometry, while the traditional approach to segment a given brain involves the manual delineati...
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Method and Effect Evaluation of Implementing Health Management in Physical Examination Centers of 3A Hospitals
Issue:
Volume 5, Issue 6, November 2017
Pages:
492-495
Received:
27 December 2017
Published:
28 December 2017
Abstract: Objective To understand the changes of various routine indices for the people who received health physical examination after the implementation of health management, discuss the method of implementing health management in 3A hospitals, provide a reference for better management in 3A hospitals in the future. Methods A total of 1326 people (875 males and 451 females) were selected, whose physical examinations were performed in our hospital’s examination center each year in succession from January 2015 to September 2017 and examined items included weight, blood pressure, fasting blood-glucose, blood uric acid and blood lipid. The changes of indices of two examinations before and after implementing health management were compared to evaluate the effects of health management. Results All indices were normal: 192 people in 2015, 230 people in 2016, 243 people in 2017; proportion of normal people: 14.48% in 2015, 17.35% in 2016, 18.33% in 2017. Difference was statistically significant (P<0.01). Detection rates for obesity, hypertension, abnormal glucose metabolism, hyperuricemia and hyperlipidemia decreased and bad living behaviors improved obviously. Difference was statistically significant (P<0.05). Conclusion The health management is based on the health physical examination and implemented in physical examination centers of 3A hospitals, integrates with health education, disease consulting and lifestyle intervention, has high starting point of the platform and flexible, diverse, easy and feasible approaches, is able to raise the examined people’s understanding and management of life-style diseases and decrease morbidity.
Abstract: Objective To understand the changes of various routine indices for the people who received health physical examination after the implementation of health management, discuss the method of implementing health management in 3A hospitals, provide a reference for better management in 3A hospitals in the future. Methods A total of 1326 people (875 males...
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Method for Improving Rolling Circle Amplification Sensitivity and Specificity
Yun Wei Zhang,
Dan Hou,
Wei Dong Xiao,
Jenni Firrman,
Lin Shu Liu,
Yong Diao,
Zhi Qing Qi
Issue:
Volume 5, Issue 6, November 2017
Pages:
496-501
Received:
27 December 2017
Published:
28 December 2017
Abstract: Rolling circle amplification (RCA) of genomic or plasmid DNA has found wide used in technique academic and biotechnology reseach. In this study, we have successfully found what caused the nonspecific product in the reaction, thus designing an improved RCA which overcomes false priming at sites where primer dimers are formed. The results demonstrated that PEG or PEI could interact with the components of the improved RCA system, and help increase the reaction rate and yield of the improved RCA system, and dramatically reduces the nonspecific RCA products. This low-cost and efficient method dramatically overcomes nonspecific product amplification phenomenon in the RCA reaction which is problematic and has existed for a long time.
Abstract: Rolling circle amplification (RCA) of genomic or plasmid DNA has found wide used in technique academic and biotechnology reseach. In this study, we have successfully found what caused the nonspecific product in the reaction, thus designing an improved RCA which overcomes false priming at sites where primer dimers are formed. The results demonstrate...
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