Table of Content

28 June 2017, Volume 45 Issue 3

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New Perturbation Bounds for Semi-Definite Factor of Matrices with Full Column Rank

KONG Xiangqiang

2017, 45(3):  197-201.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.001

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With the singular value decomposition and generalized polar decomposition of matrix，this paper obtained new perturbation bounds for the semi-definite factor of generalized polar decomposition of the matrices with full column rank. The conclusions improved the previous results，and the previous results can be viewed as a special case of the new perturbation bounds.

Stability Analysis of a Four Neurons Network with Neutral Delay

WANG Runxia，LIU Haihong

2017, 45(3):  202-208.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.002

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A four neurons network model with neutral delay was studied. Firstly，by analyzing the linearized equation of the system at the equilibrium point and the corresponding characteristic equation，the author studied the stability of the equilibrium point and obtained the effective condition where Hopf bifurcation occurs；secondly，by changing the parameters of the time delay or neutral term coefficient，the state of the neuron was changed between the resting state and the firing state；finally，numerical simulation verifyied the correctness of theoretical analysis

Determination of Three Antibiotics Residue in Environmental Water Samples with SPE-HPLC

TAN Fang，SUN Kai，SONG Wei，CHEN Gaoyi

2017, 45(3):  209-213.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.003

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The author established a solid phase extraction - high performance liquid chromatography（SPE- HPLC）method to determinate concentrations of ofloxacin，tetracycline，sulfamethoxazole in water. The samples were enriched with solid phase extraction column，after being eluted with ultrapure water - acetonitrile（75∶25，volume ratio），the samples were determinated with high performance liquid chromatography - ultraviolet detector. In the conditions of detection wavelength λ = 274 nm，column temperature 30 ℃，mobile phase as acetonitrile - phosphoric acid aqueous solution（50∶50，volume ratio），the author used a gradient elution program to achieve the baseline separation of three kinds tested components. Linear range of ofloxacin was 0. 25～2 μg/mL，tetracycline was 0. 4～ 2 μg/mL，sulfamethoxazole was 0. 04～2 μg/mL. Blank spiked recoveries were 82. 32% ～94. 86% .Detection limits of ofloxacin，tetracycline，sulfamethoxazole were 0. 04，0. 25，0. 01 μg/mL respectively， quantitation limits were 0. 25，0. 40，0. 04 μg/mL，respectively. This method is simple，rapid，sensitive and efficient to meet the needs of practical work.

Structural Characterization of a New Kind of 1，5-diketones Compound

HU Li，LIU Xiaocheng，DENG Jialun，QIU Li

2017, 45(3):  214-218.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.004

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A new kind of 1，5-diketones compound was synthesized in the experiments. The structural was characterized by HPLC，DSC，¹HNMR，¹³CNMR and MS. This compound was inferenced as 1，3，5- tris［4-（dimethylamino）phenyl］-1，5-Pentanedione.

Preparation Process and Adsorption Performance of Activated Carbon from Lignin

CHEN Liang，XIN Shanzhi，MI Tie，HU Minghua

2017, 45(3):  219-224.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.005

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Activated carbon（AC）was prepared from pulping back liquor lignin with chemical and physical methods and the adsorption capacity of AC was investigated. The results showed that，for H₃PO₄ activation agent，the AC preparation needed not secondary activation. However，for ZnCl₂ activation agent，the AC preparation needed secondary activation. The optimal operation parameters were temperature at 550 ℃，time for 2 h，impregnation ratio 2∶1 for H₃PO₄. For ZnCl₂，the optimal operation parameters of the first activation were temperature at 550 ℃，time for 2 h，impregnation ratio 2∶1，the optimal operation parameters of the secondary activation were the flow rate of CO₂ was 80 mL/min，the activation time was 30 min and the temperature was 850 ℃，the AC prepared with this method met the standards of first class of AC for purification water. Generally，the secondary activation by CO₂ de?creased the yield of AC，but increased the proportions of mesopores and macropores in AC.

Quantitative Analysis of Structure - Activity of Pyranones

YU Qingfen

2017, 45(3):  225-229.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.006

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This paper used molecular structure descriptors for structural characterization of pyran derivatives and for prediction of anti human immunodeficiency virus（HIV）activity，with stepwise regression（SMR）method，the quantitative model for relationship of molecular structure descriptors and activity was built up and achieved good results. The correlation coefficient of R of the model was 0. 985 7 ；followed with leave one out（LOO） cross examination ，the correlation coefficient R was 0. 954 6，these indicated that the quantitative relationship model had good stability and predictability.

Effects of Exogenous Cinnamic Acid on Reactive Oxygen Metabolism in Cucumber Leaves Under Low Light Stress

ZHANG Xiaolong，ZHANG Shen，YANG Xiaoqiang

2017, 45(3):  230-235.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.007

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To investigate the effects of exogenous cinnamic acid on reactive oxyen metabolism in cucumber leaves under low light stess ， cucumber seedlings（ Cucumis sativus cv. Jinchun No. 4）were pretreated with 50 μ mol cinnamic acid for 2 d and then were cultivated at normal light intensity of 500 μmol/（m·s）and low light intensity of 80 μmol/（m·s）for 6 d. We investigated if cinnamic acid could protect cucumber plantlets under low light stress，and examined whether the protective effect related to antioxidant enzymes and lipid-peroxidation regulation or not. The results showed that at 2 d，exogenous cinnamic acid decreased levels of malonaldehyde（MDA），superoxide radical（O₂^.-）and hydrogen peroxide（H₂O₂），elevated the activities of antioxidant enzymes superoxide dismutase（SOD），glutathione peroxidase（GSH- Px）and ascorbate peroxidase（APX）in cucumber leaves. At 8 d，the combination of cinnamic acid pretreatment and low light decreased the contents of MDA，H₂O₂ and O₂^.-，enhanced the activities of SOD，catalase（CAT），APX and GSH-Px compared with non-pretreated plants. The exogenous cinnamic acid is able to moderate antioxidant enzyme activities and decrease lipid peroxidation in certain extent，it reduces stress intensity at low light．

Function of AP2/ERF Transcription Factors in Plant Tolerance to Abiotic Stress

GAO Chunyan，WU Ruia，YUAN Yu，LIU Tongyue，REN Liping

2017, 45(3):  236-240.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.008

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APETALA2/Ethylene Response Factor （AP2/ERF） transcription factors are widely distributed in plant kingdom. These regulatory proteins play important roles in plant growth，development and response to environmental stress. Due to the plasticity and specificity of individual member of this family，AP2/ERF transcription factors as valuable regulatory genes received more and more attention in genetic engineering and crops breeding. This review summarized the discovery，the structural characteristics，the regulatory mechanism and the response mechanism of abiotic stress of AP2/ERF，and provided some references for the further study of AP2 / ERF genes.

Neuroimmune Mechanism of Opiates Addiction

YUE Kai，WEN Ruojian

2017, 45(3):  241-246.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.009

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This paper provides a brief review on cellular and molecular mechanism of microglia involving opiates addiction，also introduces prevention and cure of neuro-immuno suppressive agent on opiates addiction. Opiates addiction brings serious medical and social problems. Most researchers concentrate on opiates′ effects on neurons. Current rehabilitation medicines acting on opioid receptor of neurons have limited efficacy. Neurons are not the only components in central nervous system（CNS）.Although accounting for 10% -15% of CNS cell，the function of microglia has been neglected. Opioid stimulates Toll-like receptor 4（TLR4），which induces microglia activation and inflammatory factors production. As a result，reward signaling pathway is regulated to increase neuron excitability，leading to drug dependence and addiction. The neuromodulatory properties of the immune factors，together with their essential role in neuroinflammation，provide a new framework to understand how neuroimmune system mediates brain function and addiction behaviors.

Changes of Platelet Parameters in Patients of Acute Ischemic Cerebral Apoplexy Treated with Ticagrelor and Clopidogrel

LUO Jun，CHEN Guohua

2017, 45(3):  247-250.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.010

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Objective To compare changes of platelet parameters in patients with acute ischemic cerebral apoplexy who have been treated with ticagrelor and clopidogrel. Methods The authors have chosen 65 cases of patients with acute ischemic cerebral apoplexy within 24 hours in Wuhan No. 1 Hospital from January 2015 to December 2016，who were randomly divided into ticagrelor group and clopidogrel group. Changes of platelet parameters were then evaluated before treatment，7 days and 3 months after treatment，including PLT（platelet count ），PCT（platelet hematocrit），PDW（platelet distribution width） and MPV（mean platelet volume）. Results PDW increased both in clopidogrel group and ticagrelor group 7 days and 90 days after treatment，the growths were 5% and 2%，respectively. The difference was statistically significant（ P < 0. 05）. Rates of bleeding events or other adverse reactions，PLT，PDW，PCT and MPV of the two groups showed no significant difference（ P > 0. 05）. Conclusion Compared with clopidogrel，ticagrelor increases platelet width with low amplitude，thereby has better effect on anti- activation and anti- aggregation of platelet，and do not increase bleeding and otheradverse events，it is expected to become the first- line drugs instead of clopidogrel on platelet aggregation.

Treatment on Laryngeal Edema After Tracheal Extubation with Combination of Budesonide Nebulization Inhalation and Methylprednisolone

ZHANG Jie，ZHANG Shutong

2017, 45(3):  251-254.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.011

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Objective To observe the prevention effect on laryngeal edema after tracheal extubation with budesonide nebulization inhalation. Methods The research chose patients taken tracheal intubation and tracheal extubation from Jan. 2015 to Dec. 2016 in emergency care unit of the Central Hospital of Wuhan，and randomly divided the patients into experimental group and control group. The experimental group was treated with budesonide nebulization inhalation after tracheal extubation while the control group was treated with normal saline nebulization inhalation，the indexes of dyspnea incidence，blood oxygen saturation（SpO₂），arterial partial pressure of oxygen（PaO₂），arterial partial pressure of carbon dioxide（PaCO₂）and respiratory rate（RR）were observed. Results 30 min after nebulization inhalation，compared with the control group，the indexes of experimental group of PaO₂ and SpO₂ increased，the differences were statistic significant（ P < 0. 05），the indexes of PaCO₂ and RR had no obvious change. 60 min after nebulization inhalation， in the experimental group， the PaCO₂ significantly decreased， the SpO₂ significantly increased， the RR significantly fell down， thedifferences were statistic significant（ P < 0. 05）；the PaO₂ had no obvious change. The incidence of laryngeal edema in experimental group was obvious lower than that in control group（ P < 0. 05）.Conclusion Budesonide nebulization inhalation after tracheal extubation can effectively improve oxygenation and reduce laryngeal edema，it is worthy to popularize.

Investigation and Analysis for Students Sports Injury of Qiannan Normal University for Nationalities

GUAN Qingchao

2017, 45(3):  255-258.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.012

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Taking Qiannan Normal University for Nationalities as object，this paper analyzed the incidence rate，incidence occasion，injury site and cause of sports injury in male and female students. The results showed：the injury occasion was highest in outdoor activity; the injury happened quite often in basketball，football，track and field，gymnastics，taekwondo; the injury sites were quite often at ankle，thigh ligament，knuckle，wrist joint，waist，shoulder and elbow. Based on the investigation results，the author suggests that the protective measures should be strengthened，the knowledge of injury prevention should be explained，the basic skill should be strengthened，and the self-protection consciousness and measures should be improved.

Medical Errors Analysis in 62 Sealed Medical Records of A Hospital

WANG Yuefeng

2017, 45(3):  259-261.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.013

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Objective To analyze the errors in the sealed medical records，and to explore the reasonable and legal management measures for the medical records. Methods 62 sealed medical records from September 2006 to September 2016 were statistically analyzed and classified for the year of occurrence，involving departments and so on，combined with the results of medical disputes to analyze the qualities and problems in medical records. Results Disputes records with negotiated settlement were 30 cases，accounted for 48. 4%；disputes records with judicial and medical identification judgment were 15 cases，accounted for 24. 2%；disputes records with medical mistakes were 38 cases，accounted for 61. 3%；records with hospital full responsibility were 8 cases，accounted for 12. 9% ，the majority of these medical records were in depatments of orthopedics，obstetrics and gynecology，general surgery. Conclusion Medical staffs need to strengthen the ability of medical record writing and communication between doctors and patients，in order to reduce or avoid the occurrence of medical disputes.

Research on Three-Classifier Evaluation Method B-ROCCH

ZOU Hongxia，TAO Shuo

2017, 45(3):  262-267.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.014

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ROCCH theory is mainly used to solve the performance evaluation of two-classifier which are cost sensitive，how to effectively extend it to multi class evaluation is the difficulty for research. With binary-tree and vertical average method，a new cost-sensitive three-classifier evaluation method B-ROCCH was made up. B-ROCCH method was used to transform three-classification problems into two-classification problems with the idea of binary-tree，three types of ROC curves were plotted with the vertical average method，then combinated with the ROCCH thoughts，to determine the potential best classifier and the best classifier in the three-classification problems. The method was implemented on the MBNC platform，the experimental data were compared with the B-AUC evaluation method，the results prove that the B-ROCCH method is feasible，more distinguishable and faster.

Application of GIS Technology in Optimization of Distribution Routing Under Consideration of Carbon Emissions

ZHONG Cong′er，HU Xisheng

2017, 45(3):  268-273.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.015

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The characteristics of logistics distribution under the B2C e-commerce modes were analyzed，the vehicle routing problem with time windows under the consideration of carbon emissions was described，a routing optimization model with time window was built up. The integration of GIS technology and Tabu-search algorithm was applied to solve the model. The logistics distribution routing optimization system under the B2C e-commerce modes was developed. A preliminary application study of the system was carried out on the logistics distribution data from an e-commerce enterprise in Xiamen. The results showed：there was still large space for carbon emissions improvement in the arrangement of traditional distribution routes；the integration of GIS technology and Tabu-search algorithm not only realized the better decision making of distribution routing optimization，but also provided assistant analysis to the decision makers.

Core Modules and Technology of Computer-Aided Translation

CHEN Kuang

2017, 45(3):  274-277.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.016

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The machine translation（MT）and computer-aided translation（CAT）strongly improve the translation efficiency. Under the condition of disadvantage of theory and technology in machine translation，the CAT becomes a valid choice for translators，and there are several application software products coming out. The core technology of CAT is translation memory（TM），and the core modules are TM system，terminological data bank，alignment tool，project management system and so on. Based on the principle and feature of CAT，this paper analysed the core technology and core modules of CAT， introduced the main stream CAT software， and provided references for application and popularization of CAT tools.

Application of Digital Certificates in Network Security

YANG Qicheng，WANG Jin，HU Beichen

2017, 45(3):  278-282.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.017

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Digital certificate is an electronic certificate issued by the CA. The technology uses public key and private key for data encryption mode，it can effectively guarantee the security of data during transmission， therefore， the digital certificates have been widely applied to authorized identity management，trusted website services，terminal security protection，e-mail security and code signing protection，so as to effectively guarantee the security of the network. The author introduced the digital certificate briefly，then analysed the principle of digital certificate，at last，pointed out the application of digital certificate in network security.

Research on Reform of Engineering Training Teaching System of Jianghan University

JIANG Ming，XU Wei，ZHANG Chaogang

2017, 45(3):  283-288.  doi:10.16389/j.cnki.cn42-1737/n.2017.03.018

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Based on development background and present situation of Engineering Training Center of Jianghan University，this paper analyzed the disadvantages in engineering training teaching concerning teaching equipment，teaching model，teachers，teaching management and so on. Aimed at the disadvantages，this paper summarized the concrete practices of Jianghan University on reform of engineering training teaching system，to provide references for further development and reform of engineering training teaching.