Table of Content

25 June 2014, Volume 42 Issue 3

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Micro and Nanofabrication，Microfluidics and Mesoscopic Biomimetics

CHEN Yong

2014, 42(3):  5-8. 

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We first introduce the concept of mesoscopic biomimetics. Then, we briefly describe the methods of nanofabrication and microfluidics, followed by a few examples of their applications in mesoscopic bioengineering. Taking into account the rapid progress in all areas of life sciences, we believe that this interdisciplinary approach will general great impact for both fundamental and applied researches.

Synthesis and Surface-enhanced Raman Scattering Effect of Medicine Flake Silver Substrate

HU Chenglong，CHEN Shaoyun，LIU Xueqing，LIU Jiyan

2014, 42(3):  9-12. 

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The facile and efficient synthetic route for medicine flake silver nanostructure via electrodeposit has been reported. The products are characterized by X-ray diffraction（XRD），Scanning electronic microscopy（SEM）to analyse its nanostructure. The mechanism of the formation of the medicine flake silver is discussed preliminarily. The unimolecule detection experiment shows with the ultralow concentration Rhodamine 6G（R6G），namely 10_-10 mol/L，it can be detected the spectral signal，illustrates that the silver nanostructure can be used as a good substrate for surface-enhanced Raman Scattering（SERS）. The reason is that the medicine flake silver nanostructure has hierarchical structure，and has excellent SERS activity.

荧光化学传感器和化学计量型传感器用于离子识别的研究进展

喻艳华，付 成

2014, 42(3):  13-22. 

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荧光检测相对于放射性核素检测是一种高灵敏度、低成本、操作方便的化学检测技术，可以用于检测多种化学物质。介绍了荧光化学传感器和化学计量型荧光探针的基本原理。阐明了通过“点击”化学（Cu（I）催化下炔基与叠氮形成稳定的1，2，3-3氮唑化合物）合成荧光化学传感器和化学计量型荧光探针的应用，主要从3个方面展开，包括阴离子识别，阳离子识别以及阴、阳离子对的识别。用于阳离子识别的荧光基团重点介绍了氟化硼二吡咯（BODIPY）、苯并噻二唑和香豆素。

Solution for Two-point Boundary Value Problems of Fractional Differential Equation of Coupling System

CAO Jingwen，HU Weimin

2014, 42(3):  23-26. 

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Discusses a class of the two-point boundary value problems of nonlinear fractional differential equation of coupling system，using the Green function，differential system can be converted toequivalent integral system，with the fixed point theorem，the existence and uniqueness of positive solutions for system are abtained，sufficient conditions of no solutions are given.

Mathematics Model of Life Value Evaluation Based on Willingness to Accept Method

LI Wenhong，CHENG Qizhi

2014, 42(3):  27-30. 

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Carries out reasonable evaluation for workers′ life value in risky industry, it is a kind of protection for workers′ safety. Willingness to pay of life value provides the real cost-benefit information for health and safety management. In the subjects of health and safety management, the willingness to pay of life value has multiple meanings, which are corresponding with social cost of life value ensurance, willingness to pay of reducing life risk and willingness to pay of life insurance. Analyses the theory levels of willingness to pay of life value, and on this base, starts from willingness to accept angle, uses multiple regression model, to evaluate the life value of workers in risky industry, and analyses the results, obtains the conclusions that the life value evaluation is significant positive correlation with education level and income level, proposes the suggestions for scientific management, system of safety production fund, insurance of work-related injury.

Estimation of Foreign Exchange Risk on Listed Companies of Chinese Furniture Manufacturing: Based on GARCH Model and VaR Method

WANG Tianlun

2014, 42(3):  31-36. 

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To know the potential foreign exchange risk of furniture manufacturing in China，chooses seven representative listed companies and analyses the data of them from 2012 to 2013 with GARCH model and VaR method. Results show that three of them have low risk window，however the other four companies have experienced obvious risk，and they are strongly recommended to use proper management tools for risk control.

Molecular Dynamics Simulation of Rapid Cooling Process of Iron Melt

ZHOU Youhua，LI Wenhui，TAO Lei，ZHENG Guang

2014, 42(3):  37-40. 

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Establishes 8×8×8 atomic box with LAMMPS，adopts EAM（embedded atom model）potential，to simulate large number iron atoms system. At first，heats up the system，then cool down the system under different cooling rate. Through molecular dynamics simulation，obtains energy-temperature curve，radial distribution function（RDF）and architecture. The results show that the crystallization temperature point is basically in coincident with the melting point when the cooling rate is lower than 1.8×10₁₀K/s；the product is amorphous when the cooling rate is higher than 10₁₂K/s；the degree of supercooling can reach 700 K；Fe single crystal can be prepared at cooling rate around 10₁₁K/s.

Research and Application of Magnesium Alloy Technology

LIU Zhichao，LI Yao，YANG Junjie

2014, 42(3):  41-46. 

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Lists the commonly used magnesium alloy brand and its corresponding ingredients，starting from its properties，introduces the application feature of different alloys. Towards the insufficient performance of magnesium alloy commonly used at present，mainly based on surface technology strengthening and rare-earth adding strengthening，summarizes the latest progress of magnesium alloy strengthening. In accordance with the processing method，it can be divided into casting and deformation. From three aspects which are casting，jointing，deformation，introduces the new technology in magnesium alloy processing domain，meanwhile，summarizes the application of magnesium alloy in automobile，3C and medicine.

Research and Application of Sand Control Technology with Casing on Xinli Oilfield

LI Fangqing，ZUO Zhijiang

2014, 42(3):  47-51. 

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From the angle of soil and rock mechanics，analyses the sand production reasons in oil well in Xinli oilfield，also analyses the harms to oilfield from stratum，well condition and development，the sand producing is serious in the oil well，it makes the operation frequency increase，the pump inspection period become shorter and the production stop，these restrict the producing of the oil field. Researches the sand production mechanism and casing sand control technology，develops a new type of sand control casing column. Carries out the data analysis on the new sand control technology. Respectively introduce the using condition of the simple sand producing well，sand producing well with few mud and sand producing well with much mud，after using the technology ，it reduces the maintenance operation times and prolongs the pump inspection period.

Growth and Characterization of Graphical ZnO Nanorods

TIAN Yu，TU Yafang，ZHU Xiaolong ，CHEN Mingyue，WANG Qiang

2014, 42(3):  52-56. 

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To obtain ZnO nanorod arrays which have good UV emission characteristics，reports a simple and effective method for fabricating and patterning highly ordered ZnO nanorod arrays on H₂-decomposed GaN film，using aqueous solution at low temperatures（105 ℃）. The prepared samples were characterized the microstructure and morphology. The effects of hydrogen corrosion treatment have been studied by comparative experiment. The results show that the H₂-decomposed GaN film substrate is conducive to the formation of a dense，uniform，hexagonal pattern of oriented ZnO，which is consistent with the screw dislocation growth mechanism.

Corrosion Fatigue Cracking Research of Rail Fastenings

ZHANG Yanwen，WU Lixin，WANG Zhifen，XU Zhutao

2014, 42(3):  57-62. 

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The rail fastenings fractured when they were used in a humid tunnel about two years. The fracture reasons were analysed with means of macroscopical observation，scanning electronic microscope and X ray energy spectrometer，metallography microscope and so on. The result shows that environment is stronger acid and the fastenings are seriously rusty，a small quantity of Cl and S element is detected in the corrosion. The fracture origin lies in the symmetric inner arc where the tensile stress is ultimate and the narrow gap happened because of serious corrosion. The shell pattern is apparent ，so the fastenings failure belongs to corrosion fatigue cracking. It can be prevented by using better corrosion resistance steel，increasing tempering temperature properly，hot galvanizing and reducing the fastenings serviceable life.

Design of Barcode Error Detective System Based on Wireless Transmission

LI Min，ZHOU Xianfei，QIAN Feng

2014, 42(3):  63-66. 

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In order to test the correctness of barcode，the system uses PC and reader of barcode to detect and compare the data of barcode，and uses man-machine interface which is developed by VB software to display the barcode value and set the appropriate parameters，then records and keeps data. Meanwhile the results are sent to Freescale single chip microcomputer through the serial port，then the signal is transferred to the nRF24L01 wireless module sender through SPI bus. At last，the signal is sent into the single chip microcomputer by the nRF24L01 wireless module through SPI bus，then controls the operation of stepper motor according to the correctness of barcode and output the barcode. The system is easy to operate，can be used for teaching and product quality detection.

Renaissance of Historic District on the Basis of Empirical Study

CHEN Gang

2014, 42(3):  67-73. 

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As the product of the development of human history，the city will certainly develop as the history does. However，the original structure，space and function of the city can hardly meet the need of the increasing growth of population and economic development. It′s an arduous subject facing us that how the districts and buildings，as historic relics，will adapt to the modern life. The city will develop and the carrier of the city′s history should be saved. To achieve a win-win situation of protection and development，a significant aspect lies in the implement and utilization of the urban design guidelines of historic district on the basis of empirical study. According to the empirical study and investigation on the historic district in the original Russian concession，initially comes up with targeted principles about protection and renovation at the level of urban design guidelines and has a discussion of a specific historic district and buildings.

Energy-saving Design of Jingchu Rural Residential Housing

XU Weiqi，XU Ning

2014, 42(3):  74-78. 

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With the development of society，the original rural housing has been unable to meet the needs of modern life and resource-saving society. Thus，transforming the original rural housing and putting forward new energy-saving rural housing are the main contents. Creating a comfortable living room has become a bright spot. Analyses ubiquitous problem focusing on the material of wall，the construction of door，roof and ground，the use of energy and the ventilation of building，and points out the advantages and disadvantages. With the usage of new techniques and processes，propose optimization for constructing new rural residential housing pattern with Hubei characteristics.

Clinical Study of Herbert Screw on Treatment of 36 Cases of Medial Malleolus Fracture

JING Guangwu，WANG Jinhua ，REN Guohai，ZHAO Hongsheng

2014, 42(3):  79-81. 

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Objective To explore the clinical application effect of the Herbert screw for the treatment of medial malleolus fracture. Methods Selects 38 cases of Herbert screw for the treatment of medial malleolus fracture from July 2011 to August 2013 in orthopedics department in the affiliated hospital of Jianghan University，patients were followed up for 3-6 months，according to the American Society for Ankle Surgery（AOFAS）score standard for curative effect evaluation. Results Finally 36 patients completed the study，2 cases missed，there were 25 excellent，8 well，3 satisfaction，good rate 91. 67% . Conclusion Herbert screw for the treatment of medial malleolus fracture has achieved good effect，for the treatment of medial malleolus fracture，it provides a new choice and it is worthy for popularizing.

Development Evaluation of Juvenile Gymnast Based on Carpus X-ray

SONG Tao, XU Guodong

2014, 42(3):  82-85. 

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Chooses the 32 female juvenile gymnasts from Wuhan Institute of Physical Education，takes picture with the X-ray on left hand twist to confirm the bone age，and to evaluate the development status with the bone age，explores the influence of tournament gymnastics to the juveniles′development. The results show that：as growing，the experimenter have the tendency of development delay，the wrists′ development are later than the development of radius，ulna，metacarpus and finger bones.

Clinical Hematology Analysis of A Patient with HbH Complicated with G6PD Deficiency in Acute Hemolysis

WANG Ahui, LING Yanying, ZHUANG Qiurong, DENG Jiade

2014, 42(3):  86-89. 

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Through the laboratory examination results of a case with HbH complicated with G6PD deficiency in acute hemolysis，to analysis the interaction of hematology parameters when the two diseases exist at the same time and complicated with acute hemolysis，and investigates the meaning to diagnosis and therapy. Through this case，obtains the conclusions as below：（1） In hemolytic patient，with MCV normal or higher，it can not exclude the possibility of thalassemia，and need to have further examination to confirm；（2）In acute hemolysis，with G6PD normal，it can not exclude the possibility of G6PD deficiency，need to reexam G6PD 1 month after acute hemolysis become normal，to obtain the real result. The clinical diagnosis and therapy can not believe the temporary results of laboratory fanatically，and should consider comprehensively，so cautiously treats the hemolysis and avoids becoming worse. Because that the both two are genetic disease，the most effective way to prevent and treat the disease are antemarital physical examination and prenatal examination so as to avoid the birth of infant with the defect.

Treatment of Sulodexide on Albuminuria in Early Diabetic Nephropathy

XIONG Yingzhe

2014, 42(3):  90-92. 

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Objective To study the clinical effect of Sulodexide on albuminuria in early diabetic nephropathy. Methods 65 cases of patients with early diabetic nephropathy were randomly divided to a control group including 30 cases and a treatment group including 35 cases. Both groups have the treatment 8 weeks. The control group orally take Losartan 50 mg/d for 4 weeks. The treatment group on the basis of normal treatment（Losartan potassium 50 mg，one time/d），adds Sulodexide 600 LSU，qd，iv ，one time/d，after 2 weeks，changes to use Sulodexide tablet 200 mg/d for 6 weeks （totally 8 weeks）. Results After treatment，B2-MG，BUN，CREA and 24-hour urinary protein is significantly lower than that before treatment for both groups（P<0. 05 or P<0. 01）. These indexes of treatment group are better than those of control group. Conclusion Sulodexide can relieve albuminuria effectively in early diabetic nephropathy.

Effects of Dexmedetomidine to Anesthesia Laparoscopic Surgery on Postoperative Recovery Phase CO2 Accumulation Patients

DENG Fangfang ，WU Yu

2014, 42(3):  93-96. 

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Objective To observe the effects of dexmedetomidine to anesthesia laparoscopic surgery on postoperative recovery phase CO2 accumulation in patients. Methods Chose patients undergoing laparoscopic operation. Before the end of operation about 40 min measured arterial blood gas. Selecting 40 cases of patients with PaCO2 70-90mmHg and pH<7. 30. They were randomly divided into a control group（group N）and dexmedetomidine group（group D） with 20 cases in each. Before the end of operation about 30 min. N group were treated with 0. 9% sodium chloride 10 mL slow intravenous injection. D group were given the dexmedetomidine dubbed 4 μg/mL slow intravenous with dose concentration 0.8 μg/kg. Recorded two groups of patients at extubation（T0），5 min after extubation（T1），30 min after extubation（T2）of heart rate，blood pressure and Riker score. Two groups of patients from extubation to can returned to the ward satisfaction time（T3）. Results Compared the group D with N，at T0，T1，T2 time，heart rate，blood pressure，and Riker scores were statistically significant（P <0. 05）. Comparison of the two groups was not statistically significant from extubation begin to restore satisfactory and could return to ward（P> 0. 05）. Conclusion Laparoscopic surgery，CO2 accumulation in patients with hypercapnia recovery phase of anesthesia，given dexmedetomidine is safe and effective.