Table of Content

25 August 2014, Volume 42 Issue 4

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Experimental Study of a New ePTFE Membrane Filter Media

YU Xinming，TIAN Kuang，SHI Ling，MI Tie

2014, 42(4):  5-8. 

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Introduces the test results of filtering pressure drop and fractional filtering efficiency on a new kind of ePTFE membrane filter. Under the test wind speed is between 0. 5～2. 5 m/s，the pressure drop of this clean membrane filter is about 27～171 Pa；Under the test wind speed is at 1.2 m/min，its collection efficiency is more than 98% for PM2. 5.

Research Status of Volatile Organic Compounds（VOCs）Catalytic Oxidation Process and Mechanism

YUE Lin

2014, 42(4):  9-15. 

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Reviews the research status of volatile organic compounds catalytic oxidation process and mechanism，such as catalyst characterization，research methods of catalytic process，and different research systems. In-situ technology and X-ray absorption fine structure （XAFS） in catalyst characterization can preferably elucidate the catalytic process and mechanism. The research of catalytic oxidation process mainly include reaction kinetic models （the Power-rate Law， the Mars-van Krevelen Model， and the Langmuir-Hinshelwood）， reaction monitoring technology （In-situ FTIR， In-situ NMR， transient technique， isotopic tracing） ， quantum chemical calculation， et al. Generally， reaction kinetics is one of the most widely techniques for the mechanism research of catalytic oxidation. The reaction products can be directly detected，which adsorb more attention. The research of quantum chemical calculation is just used for proof.

Ruin Probability of Double Cox Mixed Reinsurance Risk Model Under Thinning Process

JIANG Lanqing

2014, 42(4):  16-19. 

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Researches a class of double reinsurance model with investment and interference，considering the arrival of guarantee slip and satisfaction of a claim are both the Cox process，and the latter is a p-thinning process of the former. Towards the improved model，obtains the upper bound of ruin probability satisfaction and the lundberg inequality.

Growth of H Values Random Dirichlet Series on Horizontal Lines

SUN Fei

2014, 42(4):  20-24. 

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Mainly studies growth of the random Dirichlet series and growth of the H talues random Dirichlet series on the horizontal lines. Discusses the value of rendom Dirichlet series in the Hilbert space. Some important results are obtained：the H values random Dirichlet series ，no matter their convergence domain is the whole plane or half plane ，they a.s. have the same growth on every horizontal line as well as every strip and the whole convergence domain.

Super-edge-graceful Labelings of Dandelion Graph

JIA Huixian，ZHANG Jing

2014, 42(4):  25-29. 

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In 1994，Mitchem and Simoson introduced the notion of super edge-graceful graphs when they studied the problem of labeling graph. In the course of subsequent study，it was proven that some graphs were super edge-graceful and some conjections on super edge-graceful graphs were introduced. The super edge-graceful labelings of the dandelion graphs are constructed by recursion，and it is proven that dandelion graphs are super edge-graceful graphs.

Solutions of Supporting System with Principle of Minimum Potential Energy

LIU Zihong

2014, 42(4):  30-34. 

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Using the superposition principle and equivalence principle of elastic mechanics，take the supporting system as a whole to study it，based on the priciple of energy conservation of elastic mechanics，the potential energy functions for the supporting system are derived by applying the theorem of superposition for multiple displacements under the assumption that every internal force is acting on the supporting system in turns. A new algorithm for the supporting system is also obtained by using the principle of minimum potential energy. This algorithm is simple，accurate ，and can be widely used in various types of engineering calculations.

Design of Foam Molding Machine Control System Based on FX_2N PLC

XU Zhibang

2014, 42(4):  35-39. 

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Through the analysis of working mechanism and technological process of foam molding machines，adopting PLC and touch screen technology to foam molding machines in a factory for bulk modification，designs the electrical control system of a foam molding machine based on Mitsubishi FX_2N series PLC. With a touch screen interface, the action time for each process can be input，the mode of operation can be selected，and the process parameters can be displayed. The control system improves the production efficiency and production quality of foam products.

Teaching Reform and Practice on Course of Mechanics of Materials

CHEN Yunxin

2014, 42(4):  40-44. 

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According to the reality of students and the feature of mechanics of materials course, to explore and practice the teaching reform of mechanics of material course. Through analogical teaching method, combination of theory and practice in teaching, using numerical analysis software ANSYS, different levels teaching, and so on, improves the learning enthusiasm of students, changes the states of hard to understand, remember and use, this study has positive significance for training the study capability, practice capability and the capability to solve real engineering problem of the students.

Design of a Running Software Based on LBS

XIAO Yuandong

2014, 42(4):  45-51. 

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Based on LBS，in accordance with requirement of real project，uses J2EE relevant technology to construct the server, and designs the running software integrated running into social intercourse based on iOS operation system. Realizes the typical mobile application with mobile terminal as proscenium and Web architecture as background server. Proposes the improved scheme according to real test results. The system architecture and test optimization of the application program have reference to the development of mobile APP.

Application of Origin in Experiment Data Processing of "Light Intensity Response Rate"

LAN Hui

2014, 42(4):  52-56. 

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In modern experiment teaching and data processing technology，there are many non-linear function verification′ s experiments. It is difficult to use the traditional method to determine the function relation with drawing process，and it leads to a large amount of calculation and poor efficiency，it is easy to have error. Origin software drawing，linear fitting，normalization treatment，Lab Talk programming functions have been used to deal with experimental data of light intensity response rate in spectrum detection system，and finally obtains the light intensity response rate. It is simple， accurate and directviewing to deal with data with Origin software，and it is convenient for theoretical analysis and experiment teaching of optics.

Construction of CAD Education System Based on International Engineering Education Mode

HU Jun，WAN Yujie，CAI Ganmin

2014, 42(4):  57-62. 

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Utilizing CDIO engineering education system of developed country，to construct CAD education system with the purpose of improving comprehensive quality and innovation ability. Based on CDIO structure，carries out analysis；constructs CAD education system with the main modules as below: adjustment of CAD course structure, processing of teaching information logic drawing, development of basic course assistant teaching system, evaluation of information feedback，design of comprehensive practical project. Proposes the train of thought of the design, gives out the specific construction drawing and design scheme, and provides reference to CAD teaching and application.

Relationship of Cytokines Associated with Th17 Cells and Acute Graft-versus-host Disease

LING Yanying，ZHOU Ming，WANG Ahui，JIANG Xuejie，LI Qingshan

2014, 42(4):  63-68. 

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Objective To explore the relationship of cytokones associated with Th17 cells in serum and acute graft-versus-host disease from patients with hematologic diseases who were undergone allogeneic hematopoietic stem cell transplantation. Methods In this study，78 patients with haematological diseases were undergone allogeneic hematopoietic stem cell transplantation. Th17 cell-associated cytokines in serum were examined by enzyme linked immunosorbent assay（ELISA）from patients with acute graft-versus-host disease（aGVHD）（n=12），without aGVHD（n=14），and patients with aGVHD who were effectively treated（n=10）. Healthy volunteers（n=10） were severed as control. Results ①The serum cytokine levels（pg/mL）of patients with aGVHD（n=12）were significantly higher compared with healthy control group（n=10）and non-aGVHD group（n=14）（P <0. 05）. On contrary，The TGF-β1 level（pg/mL）（1 156. 61±458. 04） was significantly lower than the healthy control group（2 978. 34±1 647. 71）and non-aGVHD group（2 541. 62±1 805. 16）（P<0. 05）. IL-22：non-aGVHD group was significantly higher than healthy control group（22. 14±2. 49，19. 18±1. 24）（P<0. 05）；IL-21，IL-22，IL-23 were higher than healthy control group（P<0. 05），there was no statistical difference about other cytokines between healthy control group and non-aGVHD group（P>0. 05）. ②After treatment，the cytokine levels above in 10 cases of effective treatment decreased to considerable extent ，and there was significant difference between before and after effective treatment（P <0. 05），but the IL-22 showed no significant difference between before and after effective treatment（P>0. 05）. Conclusion Th17 cell-associated cytokines（IL-17，IL-23，IL-21，IFN-γ，TGF-β1）in serum are assocoated with pathogenesis，development and treatment efficacy of aGVHD，whereas acute GVHD is no relationship with IL-22 cencentration in serum.

Disinfection Test on Three Kinds of Bacteria in Edible Fungi Plant Treated with Sodium Percarbonate and Microwave

ZHANG Fanrong，HU Zhihui，LEI Gang，ZHOU Shili，SUN Qiying

2014, 42(4):  69-72. 

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Selected three kinds of bacteria which are most common in mushroom culture medium and are difficult to be killed（E. coli，Bacillus subtilis，Aspergillus）as the test object，to test the sterilization effect of sodium percarbonate and microwave. The sodium percarbonate had the concentration gradient as 20 000，10 000，1 000，100，50，10 mg/L. The experiments showed the amount of three bacteria reduced as the concentration of sodium percarbonate increased. The E. coli and the Aspergillus were all killed at the concentration of 10 000 mg/L，the Bacillus subtilis were all killed at the concentration of 20 000 mg/L. As the time of microwave increased，the amount of bacteria reduced，the Aspergillus were all killed at 210 s of microwave，the E. coli were all killed at 240 s of microwave，the Bacillus subtilis were all killed at 300 s of microwave，the experiment reached the complete sterilization.

Application of Quality Control Circle on Nursing of Organophosphorus Pesticide Poisoning

CHEN Hualan，WANG Yanmei

2014, 42(4):  73-77. 

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Objective To implement the quality control circle（QCC）for reducing the incidence of adverse events resulting from nursing the patients hospitalized for organophosphorus pesticide poisoning. Methods Sets up the organization of QCC. Through measures of proposing program，grasping current situation，setting goals，analysing main reasons，formulating and implementing countermeasures，confirming the effect，to ensure the smoothly implementation of the QCC. Compares the incidence of adverse events before and after implementing QCC. Results The incidence of adverse events resulting from nursing the patients hospitalized for organophosphorus pesticide poisoning reduced from 17% before implementing the QCC to 5% after that. The extent of improvement was 64%. Conclusions The implementation of the QCC reduces the incidence of adverse events resulting from nursing the patients hospitalized for organophosphorus pesticide poisoning，improves the patients satisfaction，ensures the safety and effectiveness of medical services.

Application of Virtual Slice in Pathological Experimental Teaching

WANG Xuming，ZHOU Yingqiong，LIU Lijiang，QIAO Li，ZENG Sien

2014, 42(4):  78-81. 

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Pathology is one of the basic medicine, whose subject is to study the morphological changes of diseases. Pathology experimental teaching helps students to master the lesions of various diseases and the morphological changes through the observation of disease. Compares and analyses the virtual slices and the common uses of HE slices in teaching. The virtual slices instead of HE slices in common experimental course can significantly improve the effect of teaching.

Discussion on Teaching of "Project Responsibility System"in Basic Biology Experiment

XU Guoquan，LEI Gang，ZHOU Shili

2014, 42(4):  82-86. 

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Expounds the implementation of "project responsibility system" teaching mode in basic biology experiments，discusses the problems existing in the implementation process of "project responsibility system" and the matters needing attention. With implementation of the model ，reflects the teaching ideas and concepts which are teachers as lead，students as the main body ，cultivates the students′ experiment ability，thinking ability，the ability to analyse and solve problems，scientific research ability and team cooperation spirit，improves the teaching quality and effect.

Scenarios Creation Based on Question in Organic Chemistry Teaching

CHEN Helian，ZHANG Xiaohui

2014, 42(4):  87-89. 

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Learning is a continuous progress of raising, analysing and solving problems, and knowledge has scenarios character. Question，students，teaching media, and teachers are four elements of question situation. The position and action of the four elements has importance influence on felicity of situation creation. Explains the importance of four elements in problem scenarios and role requirement in scenarios creation，provides reference for creating suitable situation.

Practice of Public Elective Course of Food Safety Analysis and Detection

YANG Xiaoqiu, WAN Kun

2014, 42(4):  90-93. 

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Introduce the opening situation and effect of public elective course of food safety analysis and detection，through several easy-operation experiment of food analysis，let the students understand the principle，structure and application of the instrument，analyses and summarizes the course electing situation and the teaching feedback，provides reference for opening and teaching reform of public elective course in universities and colleges in our country.

Independent Designing Experimental System by College Students Based on Group Innovation

ZHU Chao，PENG Xianghong

2014, 42(4):  94-96. 

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Beginning with the feature of the major of polymer material & engineering and the developing strategy of Jianghan University which is serving for local area, based on comprehensive experiment curriculum and product designing curriculum of polymer material & engineering，from the aspects of design concept，chief goal，team arrangement and study areas, introduces the independent designing experimental system based on group innovation. The implement of the system will improve the students′ group innovation ability and creative ability in engineering.