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Table of Content

    28 October 2017, Volume 45 Issue 5
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    Degradation of Simulated Dyeing-Printing Wastewater by Cerium Supported Activated Carbon
    HU Minghua，ZHU Xiaoxiao，YUE Lin，HU Zhengxun，LIU Xiaoye
    2017, 45(5):  389-394.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.001
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    Cerium（Ce）supported activated carbon（AC）was made by dipping method to increase the processing efficiency for the simulated dyeing-printing wastewater，which was prepared by KN-R as model contamination. The standard curve of dyeing-printing simulation wastewater was created to calculate the mass concentration of KN-R according to the absorbency，and it could be used as the measurement index of degradation effect. The effects of the loading amounts，adsorption time，initial concentration of KN-R，pH value on degradation were examined. According to the experimental results，it can be concluded as follows：the longer the adsorption time was，the better degradation effect would be；the cerium supported activated carbon was more suitable to treat the dyeing-printing simulation wastewater within a low certain range；the degradation effect of KN-R was better when the pH value was 5；the optimum loading ratio of cerium was 8wt%. AC and Ce supported AC at optimum loading ratio were characterized by XRF and XRD，respectively. It was found that Ce was loaded on the surface of AC and distributed evenly in the form of cubic crystal.
    Bioremediation of Eutrophic Sea Waters with Ulva Pertusa
    HU Jinzhao，HU Xinxin，LIU Chengqian，XU Gongdi，LU Xujie
    2017, 45(5):  395-399.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.002
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    Eutrophication is becoming a serious problem in most of the mariculture areas in China. It can induce the red tide and animal disease，and results in heavy losses of aquaculture industry. In this study，Ulva pertusa was applied for bioremediation of aquaculture wastewater and its nutrient（TP，TN，and NH4-N）removal capacity was analyzed. The experimental results showed that the removal rates of total nitrogen，ammonia nitrogen and total phosphorus were 80%，81. 6% and 79%，respectively，under the conditions of the TN，NH4-N and TP initial concentrations of 14、3. 8、1. 9 μmol/L，the planting density of Ulva pertusa of 2. 5 g/L and experimental time of 10 d. Therefore，it has advantage of high efficiency to treat aquaculture wastewater with Ulva pertusa. Ulva pertusa can be a candidate for treating eutrophic water or aquaculture wastewater.
    Characteristics of Spatial Distribution of Different Forms of Phosphorus in Sediments of Nanhu Lake
    YANG Anping，GENG Hong，WU Laiyan
    2017, 45(5):  400-405.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.003
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    The spatial variation and vertical distribution of different forms of phosphorus in sediments of the Nanhu Lake were studied. The research indicated that the Nanhu Lake was in the state of severe eutrophication. The total phosphorus（TP）showed high levels in sediment. Average level of TP in surface sediments（0 - 20 cm）was as high as 3. 29 g/kg，and site 3# closed to the sewage treatment plant showed the highest ω（TP），reached 6. 42 g/kg . As a major component in the form of total phosphorus，the inorganic phosphorus（IP）content was varied from 0. 15 to 2. 85 g/kg，which accounted for 70% of TP. Influenced by the redox conditions，the ratio of ω（IP）/ ω（TP）showed a decrease trend with the depth increased. Iron and aluminum bound phosphorus（Fe / Al-P）accounted for more than 60% of TP，the content was 0. 21-3. 47 g/kg，and the calcium bound phosphorus content was 0. 09-1. 42 g/kg. Phosphorus load in sediments was the major internal load to cause the lake to be eutrophication. IP and Fe/Al-P were forms of higher bioavailability. Sediments are risky in releasing phosphorus load and great consideration shall be taken on the these characteristics in the future treatment and management.
    Investigation on Residues of Antibiotics in Lakes in Wuchang District of Wuhan City
    TAN Fang，CHEN Gaoyi，SONG Wei
    2017, 45(5):  406-410.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.004
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    Water samples were collected from six lakes（inner Sha Lake，outer Sha Lake，Simeitang，Shai Lake，Ziyang Lake，Dusi Lake）in Wuchang District. Three antibiotics of sulfamethoxazole，tetracycline and ofloxacin in these samples were analyzed with SPE-HPLC，and the characteristics about residues of antibiotics in the lakes were preliminarily discussed. The results showed that tetracycline and ofloxacin were not detected，sulfamethoxazole was detected in winter，spring and summer. The highest detection frequency was in spring，followed in winter and summer.
    Preparation of Pomelo Peel Based Biosorbent and Its Adsorption Behavior for Heavy Metal Lead Ions
    GUO Yanhua，LIU Yanxiang，LIU Li，WU Wangxi，ZHANG Yuanfang
    2017, 45(5):  411-417.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.005
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    The pomelo peel，which is rich in lignin，cellulose，polysaccharide and pectin，etc. ，has functional interactions with heavy metals，it can be used as adsorbent for heavy metal ions. In this study，the best modification processing method for pomelo peel powder was chosen through the comparison of adsorption behaviors to Pb（Ⅱ）ions with unmodified，alkalization modified，esterification modified and chitosan crosslinking treated pomelo peel powder. The optimal adsorption conditions of the modified adsorbent were explored in different adsorption conditions such as adsorption time，adsorption temperature，initial concentration of Pb（Ⅱ）ions，pH level and dosage of adsorbent. The adsorption kinetics characteristics of adsorbent were further studied. The results showed that the most suitable conditions for adsorbing Pb（Ⅱ）ions were alkalization modified pomelo peel powder with dosage of 10 g/L at pH 4-6，with absorbing time of 60 min and initial concentration of Pb（Ⅱ）ions as 140 mg/L. The adsorption rate reached more than 92%. The adsorption kinetics equation is：t / qt = 0. 207 3 + 0. 103 5 t .
    Application of Artificial Neural Network on Bioactivity Prediction of Pyranones
    YU Qingfen
    2017, 45(5):  418-423.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.006
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    MOPAC-PM3 algorithm in Chemoffice 2004 was used to calculate quantum chemical structure parameters of pyranones，and the quantization parameter selection were used as descriptors of pyranones. With molecular descriptors，the structure of pyranones compounds were characterized and anti human immunodeficiency virus（HIV）activity was predicted. The model on molecular descriptors and biological activity was established with RBF neural network of artificial neural network. When sp= 0. 41，the results showed that the predicting variance of MSE for network training set is nearly 0，and the network simulation and prediction of MSE was 0. 006 6，the total MSE was 0. 000 7. The results showed that the RBF neural network had the feature of high digital approximation，which improved the predition accuracy of structure of pyranones compounds.
    Analysis on Usage of Pointer and Reference in C/C++
    HAN Hai
    2017, 45(5):  424-428.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.007
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    The usages of pointer and reference in C/C++ are the difficult points in course. On the basis of introduction of the basic usages of pointer and reference，through the comparison of ASM code，the writer illustrates that the reference is pointer in essence，and gives out the suggestion on application of pointer and reference.
    Privacy Protection System of Students′ Academic Scores Based on Differential Privacy
    ZHU Xiaoyan，ZHANG Si，BAI Liquan
    2017, 45(5):  429-433.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.008
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    There appears a lot of innovation on data mining for students′ academic scores. A privacypreserving academic scores system was designed. In order to protect the privacy of students, the static data was processed by differential privacy technology, which was applied in education data release. The system was not only convenient for data release according to different demands, but also protected the students′ privacy.
    Algorithm of Intelligent Test-Paper Assembling of Online Education
    LIU Haitao
    2017, 45(5):  434-438.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.009
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    The intelligent test-paper assembling is an important part of online education. Through the analysis of various performance indexes and constraint conditions in the process of intelligent test-paper assembling of online education，this paper established a suitable mathematical model of intelligent test- paper assembling. Based on the multi- objective optimization characteristics of intelligent testpapers assembling，this paper chose genetic algorithm to realize the intelligent test-paper assembling. With characteristic of intelligent test- paper assembling，this paper researched encoding，genetic operator and fitness function of test-paper.
    Methane Concentration Signal Acquisition Method Based on Optical Fiber Sensor
    SUN Chao，DING Jianjun，ZHANG Sheng
    2017, 45(5):  439-443.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.010
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    In order to complete the real-time measurement of long-distance multi-point gas concentration，the writer designed the structure of a reflection-type spectral absorption fiber sensor network. The laser light source was modulated by the wavelength modulation spectrum，and the wavelength of the light source was adjusted with the amplitude and offset of the triangular wave，to ensure that the spectral scanning center value was the same as the methane gas absorption peak. At the receiving end，in order to effectively collect the photoelectric signal，a multi-point high-speed signal acquisition software method was designed in this paper ，the influence of its modulation depth was analyzed at the same time. Experimental results showed that the software acquisition algorithm and the appropriate modulation depth could meet the precision requirements of multi-point acquisition of optical fiber gas sensor in engineering.
    Design and Simulation of Photovoltaic Wireless Data Acquisition System Based on RF
    GONG Ming，ZHU Zhaohui，DENG Hongtao
    2017, 45(5):  444-451.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.011
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    This paper studied the application of FPGA，CPLD，industrial bus and ZigBee in the photovaltaic networking from the angle of internet of things. It was found that the existing research had the problems of narrow access range，high cost and high energy consumption. This paper presented a scheme of photovoltaic wireless data acquisition based on radio frequency（RF）time-sharing communication. The cost，efficiency and power consumption of the scheme were analyzed theoretically. The ladder transmission power was designed to further reduce the power consumption. The writer designed the photovoltaic wireless data acquisition system based on RF，and use NS2 simulation to verify that the system was better than ZigBee scheme in power consumption，efficiency and cost.
    Meta Analysis of Huanglian Jiedu Decoction in Treatment of Senile Dementia
    LUO Jun，LIU Binghan，CHEN Guohua
    2017, 45(5):  452-457.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.012
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    Objective To evaluate the effectiveness of Hunaglian Jiedu Decoction in treatment of senile dementia patients systematically. Methods In the first place，the writers retrieved relevant literature by computer. After screening them according to the established standards，two researchers extracted the information independently，and cross checked the information，then input the data to RevMan5.2 for statisticanalysis. Results Six researches consisted of 539 patients have been adopted. Treatment group：patients treated by Huanglian Jiedu Decoction in combination with other western medicine or traditional Chinese medicine. Control group：patients treated by western medicine or traditional Chinese medicine. The Meta analysis results showed：1）To compare the total effective rate after treatment，the therapeutic effect of treatment group was obviously higher than that of control group( OR =3. 06，95%CI （1. 11，8. 47）），the difference was statistically significant（ Z =2. 16，P =0. 03＜0. 05）；2）To compare the cognitive function of the two groups（MMSE Score）( WMD = 1. 07，95% CI （0. 53， 1. 06）），the difference was statistically significant（ Z = 3. 90， P < 0. 000 1 < 0. 05）；3）Tocompare the ability of daily life of the two groups（ADL Score），the difference was not statistically significant between the two groups ( WMD =1. 01，95% CI （-5. 64，3. 61）， Z = 0. 43， P = 0. 67>0. 05). Conclusion The group treated by Huanglian Jiedu Decoction in combination with other western medicine or traditional Chinese medicine and the group treated by western medicine or traditional Chinese medicine，the difference is not statistically significant in the impact of daily life ability between them. While in improvement of cognitive function，the difference is statistically significant. This research indicates that the effects of treatment group are much better than the effects of control group. On account of its pharmaceutical convenience，cheap price and non-toxic and non-side effects，the therapeutic method is worthy of popularization in clinic.
    Investigation of Heart Hospital Nurses′ Knowledge on CVC Maintenance
    LUO Yuanyuan，CHEN Qi
    2017, 45(5):  458-461.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.013
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    Objective To investigate the current situation of nurses′ knowledge on central venous catheters （CVC） maintenance in a heart hospital and probe into its related influencing factors. Methods Convenience sampling was used to recruit 209 nurses，and a questionnaire was carried out from January to February 2016. Results 1）The total score of nurses′ knowledge on CVC maintenance was（71. 69 ±10. 11）. 2）Scores of nurse with different department，ages，nursing years，nurse level，participating the knowledge training of CVC maintenance or not were analyzed respectively. The difference was statistically significant. Conclusion The nurses can master the basic knowledge on CVC maintenance，record the catheter maintenance information well and do good job on the early recognition of complications. It is necessary to strengthen comprehensive，in-depth，continuous training on CVC knowledge in nurses′ standardized training.
    Analysis of Patents on Electronic Vehicles Based on Documentation Information
    LUO Qiaoling
    2017, 45(5):  462-466.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.014
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    Based on the library information，this paper introduced the declared quantity and growth rate of patent documents on electronic vehicles in the past 30 years，it was found that the new industrialization countries showed high quantity and quick growth rate in the patents declaration；the declaration applicants in Germany，South Korea and Japan accounted for most of the patents；the enterprises accounted for the majority of the patent declaration in Japan while the research institutes and enterprises have high rate in China. The current trend of patent declaration on electronic vehicles technology was illustrated，based on the patents information，this paper prospected the technology and market of eletronic vehicles in main countries.
    Investigation on WeChat Public Accounts of Natural Science Journals of Universities in Hubei Province
    ZENG Ting
    2017, 45(5):  467-472.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.015
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    Based on the opening situation of WeChat public accounts of natural science journals of universities in Hubei，the basic information，menu setting，content publishing，editing and typesetting of these WeChat public accounts were collected and compared. Furthermore，the effect of operating was estimated by monthly reading quantity. According to the investigation results，some suggestions were provided，which may be helpful for the development of WeChat public accounts of natural science journals of universities in Hubei province.
    Thoughts on Column Set-up of Scientific and Technical Journal & Research on Iron and Steel
    ZHOU Hanxiang，JIANG Yong，LI Chaoqiang
    2017, 45(5):  473-477.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.016
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    The function and meaning of column set-up for scientific and technical journal on executive editors，authors and readers were introduced. The principles of column set-up for scientific and technical journal were expounded. Several problems of column set-up for scientific and technical journal which need to be considered were discussed. How to name the column of scientific and technical journal properly was analyzed. The column set- up and changes of Research on Iron and Steel of 17 years from the year of 2000 to now were introduced，and the reference of column set-up for scientific and technical journal was provided.
    Quality Improvement of Science and Technology Journals by Making Effective Use of Resources of Sponsoring Enterprise
    JIANG Hui
    2017, 45(5):  478-481.  doi:10.16389/j.cnki.cn42-1737/n.2017.05.017
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    This paper discusses how to improve the quality of the science and technology journals by making effective use of the resources of the sponsoring enterprise. Taking Bridge Construction for example，the writer analyzed the efficient and sustainable resources of the sponsoring enterprise available for the journals from aspects of editorial board，manuscript sources，peer review，editors and authors. The practice proves that the influences of the journals in the associated industry and society can be improved with the technical influences of the sponsoring enterprises in the industry and with making good use of the guiding function of the editorial board. With the aid of the technical and talent support of the enterprises，by discovering high quality papers，selecting experts for paper review and realizing accurate paper review，the academic quality of the papers published can be guaranteed. Optimizing the structures of the editor teams，improving the comprehensive competence of editors are effective ways to ensure the editing quality of papers. Moreover，to base ourselves on the associated industry and provide better service to authors，enterprises and society are also effective ways to further expand the influences of the journals.