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Table of Content

    28 June 2015, Volume 43 Issue 3
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    Characterization of Morphological Structure and Performance of Polymer Microcapsules
    LI Mengqiang， WANG Haiping
    2015, 43(3):  197-203. 
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    Polymer microcapsules are a kind of new functional polymer materials which are widely applied in the fields of chemistry， material science and biomedical science， etc. The surface morphology， diame? ter distribution， core content and mechanical strength of the polymer microcapsules are the key fac? tors of the success of application of polymer microcapsules. The characterization of morphological structure and properties of polymer microcapsules with classical and modern instrumental methods has been re?viewed. The characteristic and application of these methods have also been pointed out. The advantagesand limitations of all methods are compared
    A Parathion Electrochemical Sensor Based on Nano-Al2O3/Graphene Composite Film Modified Electrode
    SONG Bin， XU Junhui， WANG Yazhen
    2015, 43(3):  204-209. 
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    A parathion electrochemical sensor based on nano-Al2O3/graphene composite film modified electrode has been developed. Scanning electron microscopy（ SEM） was used to characterize the surface morphology of nano-Al2O3 film and nano-Al2O3/graphene composite film. The electrochemical behavior of parathion at the sensor was investigated by cyclic voltammetry（ CV） and linear sweep voltammetry（ LSV）.Compared with bare glassy carbon electrode， the sensor showed good catalysis for the redox of parathion due to porous structure of nano-Al2O3 and excellent conductivity of graphene. The optimized experimental conditions were obtained. The results indicated that the LSV responses of parathion were linear with concentrations in the range of 0. 05 to 60 μM with linear equation of ipc（ μA） = 5. 666+0. 693 7 c（ μM）in pH 5. 2 acetate buffer with open circuit accumulation for 2.5 min. The detection limit was 20 nM（ S / N =3） and R =0. 996 4. The sensor exhibited high sensitivity and good selectivity as well as certain anti-interference ability. It was applied to the determination of residual parathion in fresh cabbage sample with the recovery of 94. 5%~101. 0%. The results were satisfactory.
    Research Progress of Conductive Polyimide and Its Composites
    YANG Ying， YAN Hui， YANG Zhilan， LIU Shasha， FAN Heping
    2015, 43(3):  210-214. 
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    The principle and progress of preparation of conductive polyimide composites with in-situ polymerization method, solution blending method, metalized surface modification method and ion implantation method are introduced. The performance of conductive filler of nano metal particles,carbonaceous material and structural conductive polymer are summarized, also with the current research situation. The application of conductive polyimide composites in microwave, electromagnetic shielding,electrostatic dispersion, integrated circuit, conductive film and coatings are briefly described.
    Progress of Patents and Conceptual Prototype of Flexible Displayer
    XU Heng， CHEN Yuhong， GAO Yangguang， HE Dan， YU Jie， SHEN Chao， LIU Jiyan， YOU Qingliang
    2015, 43(3):  215-220. 
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    Flexible displayer is also named curlable displayer，which is produced by flexible materials such as ultra-thin glass，plastics and metal foils to form the visual flexible panel. In recent years，flexible displayers attacted more and more attention and focus due to their features such as thin，light and flexible. The flexible display technology has become one of the most competitive trend for display industry. The latest applications and the breakthrough designs on flexible display technology are briefly introduced from both patents and products，the key technology and the industrial progress of flexible displayer are introduced combined with the research in our center， and a development prospect is given out.
    Effect of Atmosphere Proportion on Performance of Plasma Nitrided Layer of 1Cr13 Martensitic Stainless Steel
    TONG Xingsheng， YE Wei， WANG Chen
    2015, 43(3):  221-225. 
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    Samples of a 1Cr13 martensitic stainless steel were plasma nitrided at different atmosphere proportions. Effects of different atmosphere proportions on performance of plasma nitrided layer of martensitic stainless steel were studied. The results showed that 1Cr13 stainless steel obtained the best microstructure and properties of nitrided layer after low temperature plasma nitriding when the atmosphere proportion of ammonia and argon was 8 ∶1. The surface hardness was 1 100HV 1 which was four times of the untreated samples and had a good gradient. Besides， its thickness was 85. 7μm. When the atmosphere proportion changed from 4∶1 to 8∶1，the hardness and thickness of nitrided layer were improved. The thickness almost remained the same when the proportions were 12 ∶1 and 16 ∶1，but the black substance formed on the surface of stainless steel made the hardness of surface and nitrided layer perform inhomogeneity. When the proportion was 16 ∶1，the central hardness declined to 625. 0HV 1 ，that was 450HV 1 lower than the hardness of the edge.
    Analysis of Defects of GaSb with the First-Principle Calculation
    ZHOU Yifan， HOU Qun， PENG Xin， ZHANG Long
    2015, 43(3):  226-228. 
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    Based on the density function theory and the generalized gradient approximation，the formation energies of different defects in the bulk GaSb are calculated. The calculation results show that no matter under the Ga-rich condition or Sb-rich condition，the main defects are VGa and GaSb ，which all contribute to P-type semiconductor.
    Fracture Analysis of Reel Asteroid Gear
    ZHANG Yanwen， XU Zhutao， ZHANG Youdeng， TAO Yong
    2015, 43(3):  229-233. 
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    A tooth of reel asteroid gear fractured abnormally during operation. In order to find out how it occurred，fracture of the gear were analysed by macroscopical observation and microscopical examination. The results showed that the gear failure was multiple origins fatigue fracture，and cracks were also found at the dedendum of most other teeth of the gear. There were bainite and ferrite in gear base material，which showed the quenching cooling rate was too slow. Surface quenching was uneven. All of these problems lead to the decrease of the gear comprehensive mechanical properties. Some fatigue crack origins occured at the dedendum of teeth under the circulation work stress and stress concentration and the cracks expanded， finally caused the gear fracture.
    Analysis of Machining Distortion of Weak-Rigidity Parts Based on Residual Stress
    HU Jicheng， LIU Guancheng， WANG Ruixian
    2015, 43(3):  234-241. 
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    The cutting induced residual stress of weak-rigidity parts has great influence on part distortion because of the weak rigidity and large material removal. So，the study of influence of residual stress on machining distortion is of momentous significance. The finite element model（FEM）of hub brake cap cutting process is established. The influence rules of the cutting parameters on the residual stress are obtained with the analysis of the residual stress distribution along with the depth of the workpiece caused by different cutting parameters. The rules are validated by experiments. At last，the influence rules of the residual stress on the machining distortion are obtained by the analysis of the machining distortion due to residual stress induced by different cutting parameter，which provide the basis of machining process optimization.
    Glycoconjugates for Biological Applications
    DING Fei， LU Wangting
    2015, 43(3):  242-247. 
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    Glycans are a class of potential signal molecules，they express on the forefront surface of cells and participate in many key biological processes via formatting various glycoconjugates. Mainly discusses the recent development of glycoconjugates in controlling drug targeting delivery and cancer cell imaging/detection. Overviews the glycoconjugates of folate， oligosaccharides as targeting moiety in drug targeting delivery sytstem. Meanwhile，elaborates the various glycoconjugates in tumor imaging /sensing，and points out the future prospects of glycoscience.
    Preliminary Establishment of Rapid Propagation System of Cymbidium Hybridum
    HU Yanmei， XIA Jinbo， FANG Zhongming， GUO Yungui， YANG Yonghui
    2015, 43(3):  248-252. 
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    The formation effects of protocorm of cymbidium induced by four kinds of explants are discussed，as well as the influence of hormone proportion to proliferation and differentiation of protocorm induction. The experiment results showed the best explants for protocorm induction were stem tips，the inducing rate reached 76. 0% after 60 days culture. The three other explants could not effectively induce the protocorm. With 0. 5 mg/L 6-BA +0. 1 mg/L NAA treatment，the formation rate of protocorm induced by stem tip reached 87. 8%，and the proliferation rate of protocorm induced by stem tip with each hormone treatment all reached 100%，the proliferation and differentiation of protocorm were the best with the treatment of 1. 5 mg/L KT + 0. 5 mg/L IBA，the proliferation coefficient and the differentiation coefficient are 5. 19 and 2. 80， respectively.
    Effect of Polysaccharides from Opuntia dillenii Haw. on Hyperlipidemic Mice
    LIN Aiqin， HE Aiming
    2015, 43(3):  253-256. 
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    Objective To study the effect of polysaccharides from Opuntia dillenii Haw. on hyperlipidemic mice. Methods 28 mice were randomly divided into four groups. The hyperlipidemic mice models were established. Then the content of TC、 TG、 MDA and the activities of SOD in mice blood were determined.Results After 15 d treatment, the TC，TG and MDA content in Opuntia dillenii Haw. group were lower than those in model group，and SOD content was higher than that in model group. ConclusionPolysaccharides from Opuntia dillenii Haw. has the funtion of reducing the blood lipid in mice.
    Analysis of Blood Lipid， Glucose and Uric Acid Results of 2 099 College Staff Members Participating in Health Examination
    YONG Xuelian， YANG Weiping
    2015, 43(3):  257-261. 
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    Objective To find out the blood lipid，glucose and uric acid level of 2 099 college staff members，to reveal their anomaly detection rates and the relationship with gender，age and occupation so as to facilitate those disease prevention and promote preventive healthcare. Methods Carried out statistical analysis of 2 099 cases data from college staff participating in the health examination. Results Overall，the anomaly detection rates of TG，LDL-C，GLU，UA were higher in males than those in females，whereas the anomaly detection rate of TC appears no statistical difference between males and females.Those biochemical indexes of males and females rise with age，so does the anomaly detection rates. There exists statistical differences of biochemical indexes among teaching staff，administrative staff and logistic staff. Conclusion The biochemical indexes and anomaly detection rate of college staff are closely related to the gender，age and working position. The routine physical examination can effectively detect the anomaly of biochemical indexes which is helpful for diseases prevention and treatment. It is also beneficial for colleges staff to keep fit and maintain a quality life.
    Current Situation of Standardized Construction of TCM in Community Health Center in Hubei Province
    YU Jihong， CAI Yi
    2015, 43(3):  262-269. 
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    Objective To know the target hitting situation of TCM（ traditional Chinese medicine） service and TCM resource allocation of community health centers （ CHCs） in Hubei province， and to provide references to TCM service construction in CHCs. Methods With the questionnaire made by State Administration of TCM of China（ SATCM）， the application situation of human resource， department and office allocation， Chinese herbs， and TCM service in“Six in One” function in CHCs in Hubei were surveyed， referred to“Primary Management Standard of TCM Services in CHCs” issued by SATCM in 2003， to calculate the rate of reaching standard of the TCM resource allocation and TCM service in CHCs in Hubei. Results There were 234 CHCs in Hubei， 95（ 40. 6%） in big cities， 73（ 31. 2%） in middle cities， 66（ 28. 2%） in small cities.（ 1） In CHCs in big， middle， small cities in Hubei， the reaching standard rates that TCM doctors in total sum of doctors higher than 15% were 17. 9% ， 16. 4% ， 37. 9%（ P =0. 003）， respectively. The reaching standard rates that the clinicist received TCM training higher than 50% were 2. 1% ， 4. 1% ， 1. 5%（ P = 0. 158）.（2） The reaching standard rates that the TCM department was independently set were 70. 5% ， 32. 9% ， 51. 5%（ P < 0. 001）.（3） The reaching standard rates that the TCM pharmacy was independently set were 94. 7%， 79. 5%， 81. 8%（ P = 0. 008）.（4） The reaching standard rates that prepared slices of Chinese crude drugs higher than 250 kinds were 75. 8%， 52. 1%， 47. 0%（ P < 0. 001）， and the rates that Chinese patent drugs higher than 50 kinds were 88. 4%， 56. 2%， 65. 2%（ P < 0. 001）.（5） The reaching standard rates that utilized TCM to prevent communicable disease were 77. 9%， 68. 5%， 62. 1%（ P = 0. 088）， the rates that used combination of TCM and western medicine to treat more than 2 kinds of chronic disease were 86. 3%， 74. 0%， 63. 6%（ P =0. 004）， the rates that the TCM health records were set reached 83. 2%， 65. 8%， 66. 7%， the rates that utilized the TCM therapies more than 4 kinds were 97. 9%， 83. 6%， 75. 8%（ P < 0. 001）.（ 6） The reaching standard rates of TCM health care were 84. 2% ， 72. 6% ， 60. 6%（ P = 0. 003）， the rates of TCM rehabilitation were 94. 7%， 87. 7%， 69. 7%（ P < 0. 001）， the rates of TCM health education were 90. 5%， 82. 2%， 71. 2%（ P = 0. 007），the rates of TCM technique service of family planning were 74. 4%， 49. 3% ， 54. 5%（ P = 0. 002）. （ 7） In CHCs in big， middle， small cities in Hubei， the reaching standard rates of TCM human resources were 2. 1%， 0. 0%， 0. 0%； the rates of TCM agency configuration were 66. 3%， 24. 7%， 39. 4%； the rates of Chinese medicine allocation were 66. 3%， 42. 5%， 37. 9%； the rates of application of TCM in“Six in One” were 55. 8% ， 23. 3% ， 25. 8%（ P < 0. 001）； the comprehensive reaching standard rates were 2. 1% ， 0. 0% ， 0. 0%（ P < 0. 001）. Conclusion The human resources allocations in CHCs in small cities in Hubei are higher than those in big and middle cities， other CHCs resources in big cities are higher than those in middle and small cities， the reaching standard rates of TCM in CHCs in big cities are the highest and in small cities are the lowest.
    Value of CDFI in Diagnosis of Celiac Artery Stenosis
    RAO Zhenhong， HUA Xianping， WANG Xianming， YUAN Xuefen， MEI Li， TU Zhaoxia
    2015, 43(3):  270-273. 
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    Objective To explore the value of color doppler flow imaging（ CDFI） in diagnosis of celiac artery（ CA） stenosis. Methods The patients with abdominal pain were examined by CDFI to evalutate the initial segment of CA on observations of plaques， thrombus etc. And the peak systolic velocity（ PSV） of stenotic location was measured. 30 out- patients for healthcare were the control group， the twodementional sonograms were revealed and the PSV of CA initial segment were measured. Results 24 cases with CA stenosis were detected by sonography， including atherosclerotic plaque in 16， embolism by thrombus from rheumatic heart disease or acute myocardium infarction in 7， isolated dissection complicated with thrombus in 1. The maximum and minimum PSV at stenosis location was 420 cm/s and 228 cm/s respectively with an average of（ 304. 52 ± 53. 75） cm/s. In patients without CA stenosis， the maximum and minimum PSV at initial segment was 178 cm/s and 81 cm/s with an average of（ 113. 33±19. 70）cm/s， which were lower than those in stenotic group with statistical significance( t =16. 242， P ＜0. 000 1). Conclusion CDFI is of great value in diagnosis of CA stenosis， which can accurately display the location and degree of stenosis and the hemodynamic changes， which plays an important role in etiological screening for patients with abdominal pain.
    Clinical Curative Effect Observation of Recombinant Human Interferon α-2b Plus Trimetazidine Dihydrochloride to Herpes Zoster in Old Patients
    QIAN Xin
    2015, 43(3):  274-277. 
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    Objective To compare the therapeutic efficacy of recombinant human interferon α- 2b plus trimetazidine dihydrochloride and trimetazidine dihydrochloride alone on old patients with herpes zoster（ HZ）. Methods 66 patients admitted to our institute during 2010 to 2014 were randomly divided into two groups， the control group has 34 patients and the observateion group has 32 patients. Data were obtained about several clinical indexes， side effects during treatment， clinical efficacy and the incidence of heritage neuralgia after herpes zoster. Results The clinical efficacy is significantly better in the observation group than that in the control group ( P < 0. 05). Pain scores of the patients in the observation group are significantly lower than those in the control group( P < 0. 05). The incidences of heritage neuralgia after herpes zoster between the two groups are not statistically different ( P > 0. 05). Conclusion The therapeutic efficacy of recombinant human interferon α- 2b plus trimetazidine dihydrochloride is better than trimetazidine dihydrochloride alone on old patients with herpes zoster， and do not have more side effects. But it has no obvious effect in reducing heritage neuralgia after herpes zoster.
    Grid Workflow Scheduling Algorithm Based on Communication Cost
    ZHU Xiaohong
    2015, 43(3):  278-282. 
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    In this text， the author uses DAG graph and task-resource allocation graph to define the grid task scheduling model， and utilizes dynamic programming method to propose workflow task scheduling algorithm based on communication cost. By using extended topological sorting algorithm， dependent tasks are divided into subsets， according to them， obtains corresponding phases. At each stage， carries out task allocation of resource nodes which meet constraint conditions and optimal objective function based on computing cost， communication cost and the success rate of implementation， so it can get the most optimal workflow task scheduling. Uses the GridSim tool package to realize the scheduling algorithm， and compares with the Min- Min algorithm. Simulation results show that the proposed algorithm has good adaptability， and can solve grid scheduling problem better under different network environment and large number of data transmission circumstances.
    Design and Realization of Virtual Reality System of Computer Hardware Teaching
    YU Haitao
    2015, 43(3):  283-288. 
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    Computer hardware is the basic and keynotes in teaching of computer science including electronic and information engineering， computer technology and information technology. With the ideal virtual reality system it can observe hardware model as a whole， or in part or in detail by employing real time panorama picture， zooming in and out or rotating the model. In this report， 3DS MAX is utilized to establish electronic plank card which is then introduced into the virtual reality program； moreover， the DirectX interface is applied to the virtual reality program as well. In the improved virtual reality system，all types of hardware model could be re-built. Because of the diversities of plank card functions， and numerous types of plank card produced by many manufacturers， it is impossible for any business enterprise to obtain all types of plank cards. In addition， the improved virtual reality system can establish a situational scenario， which provides a platform for the customers including both technologists and students to understand and familiarize them with the hardware in terms of configurations， functions and applications at low cost.