Journal of Jishou University(Natural Sciences Edition)

Ways to Improve Uniform Convergence in Fresnel Integral Calculation

XING Jiasheng，YANG Xiaoyuan，BAI Lu

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 1-9.

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The uniform convergence of generalized integral with parameters involved in Fresnel integral calculation is studied.It is found that the comparison method can give a direct proof of the generalized integral with parameters which is uniformly convergent.This method can simplify the proving process and obtain good results.

Derivation of the Euler-Lagrange Equation for the Mean Curvature Model

YANG Fenlin

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 10-12.

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Several important theorems in variation principle are introduced，and the derivation of Euler-Lagrange equation for the mean curvature model and the boundary conditions are presented based on these theorems.

MLEs of Beta Distribution Parameters Based on Genetic Algorithm

LU Chunlin,FANG Donghui,CHEN Wangxue，QIAN Wenshu

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 13-15.

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In maximum likelihood estimations (MLEs) of the three-parameter from Beta Distribution，since the explicit solutions of the corresponding likelihood equations can not be obtained，the genetic algorithm is applied to obtain numerical solutions of the likelihood equations.The numerical results show that numerical solutions of MLEs by genetic algorithm are very close to true values.

Analysis on Effects of Lane Occupation on Traffic Capacity

GUO Yueling，YANG Yiye

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 16-18.

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Using video for data collection，and with the simulation value of two variables and the array of vehicle queue length，we establish the model of GM (1，N) and obtain the function relation between cumulative array of vehicle queue length and the other two variables.This formula can indirectly explain the relationship between vehicle queue length and the cross-sectional actual capacity and the sections of upstream traffic.

Size-Controlled Synthesis and Magnetite Recovery of Superparamagnetic Fe₃O₄ Microparticles

CHEN Feitai，YAN Qiuhui，LI Qing，WU Yebo，ZHOU Yancheng

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 19-22.

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Fe₃O₄ microparticles of different size were synthesized by a novel solvothermal method，using ethylene glycol as solvent. It is found that the nucleation and growth of Fe₃O₄can be effectively controlled through adjusting the concentrations of water，polyethylene glycol 20000，and iron ion，which creates the possibility of controlling the size of Fe₃O₄in a wide range effectively.Besides，Fe₃O₄ microparticle of larger size exhibits more excellent magnetic recycling property.As discussed above，the effective control of Fe₃O₄ particle is very important to expand its application in magnetite recovery of nanomaterials.

Traffic Monitoring and User Monitoring Scheme Based on Quantum Teleportation

HU Xiaohuan，ZHOU Xiaoqing,LI Zhiwei,ZHU Yuwei

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 23-26.

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Teleportation requires the transmission of the measurement information. Accordingly, communication is monitored through the classical frames and traffic is measured.In addition，the quantum network communication based on teleportation is analyzed and a scheme of communication user monitoring and traffic measurement is designed. Through analyzing the resource consumption in communication process，a scheme of particle measurement of the consumption is also proposed.

An Improved Image Blocking Compressed Sensing Algorithm Based on DWT

DENG Bo，XU Qing,CUI Jinge,LI Biyun

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 27-31.

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Reconstruction of full image of large size by applying compressed sensing theory requires a long period of time， the observation matrix of linear measurement requires large space，and there is obvious block effect in the reconstructed image.According to the characteristics of the wavelet transformation coefficients of the image，the image block is combined with the DWT transformation,and an improved DWT based image compressed algorithm is proposed.After the DWT transformation，the low frequency coefficients of each image block are preserved，and only the high frequency coefficients are observed.The high frequency coefficients are recovered by the orthogonal matching pursuit algorithm (OMP).Matlab simulation experiment shows that, compared with the non-block compressed sensing algorithm, the algorithm proposed increases the PSNR value of the reconstructed image by 2~4 dB and decreases the reconstructing time significantly; and compared with the two-dimensional discrete cosine transformation (DCT) block compressed sensing algorithm，this algorithm decreases the block effect and improves reconstruction quality significantly.

Problem and Strategies of Informatization of Greenhouse Vegetables in Central Hunan

WANG Hui，ZHOU Taoyun，LIANG Pingyuan

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 32-36.

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Firstly，this article analyzes the current domestic and overseas state of informatization of greenhouse vegetables.The development and present problems in greenhouse vegetables informatization in central Hunan are emphatically analyzed.Accordingly，specific solutions are proposed.Finally，the optimization ideas of intelligent planting and intelligent control model using WSNs technology are proposed.

Copper-Catalyzed Cyclization Reaction of N-Aryl Acrylamide and Acetone to Synthetize Indolone

DENG Youlin,YANG You,LI Liyang,WANG Liangneng,LI Zengzeng,FU Meiling,TANG Shi

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 37-41.

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A highly efficient and simple synthesis way of copper-catalyzed carbonylation and cyclization in active olefins to indole ketone was developed.At 100 ℃,the free radical tandem cyclization reaction with N-aryl acrylamides compounds synthesized a series of indole derivatives efficiently with cuprous chloride as a catalyst,di-tert-butyl peroxide (DTBP) as an oxidant and acetone as a solvent and reactant.We also explored the effects of different temperatures,catalysts,solvent and other factors on the reaction.Moreover,the mechanism of the cyclization reaction was derived.

Separation and Preparation of a C₁₅ Triolefinic Urushiol from Raw Lacquer

HE Qian，ZHENG Jie，TIAN Yungang，LIU Yihan，WANG Jianxia，WEI Hua

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 42-44.

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Raw lacquer was extracted by petroleum ether.The extracts was separated using silica gel，MCI and ODS.The purified compound was identified with H-NMR，3C-NMR and high resolution mass spectrometry.The results showed that abundant urushiol was obtained when extracting with petroleum ether.Extracts was separated by silica gel eluting with petroleum ether/ethyl acetate (V(petroleum ether)∶V(ethyl acetate)=30∶1~10∶1))，followed by MCI and ODS eluting with methanol/water (V(methanol)∶V(water)=9∶1)，to afford a major urushiol (purity reached above 96%)，which was identified as a triolefinic urushiol，3-(8′Z，11′E，13′Z-pentadecatrienyl) catechol.

Sol-Gel Preparation and Characterization of K_xMnO₂

HE Pingxiang,LIU Bo,YANG Yuhuan,QIU Youyou,ZHAO Jiuyi,LIU Shenglin,JIANG Jianbo

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 45-49.

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The sol-gel preparation and characterization of Mn-based K-intercalating compounds K_xMnO₂ were investigated.The objected materials were obtained by calcining gel precursors of K-contained manganese citrate complexes through a sol-gel route with using KHCO₃,Mn (Ac)2,and citric acid (CA) as raw materials,and the products were characterized by XRD,FTIR,and SEM.The results show that a crystal of K-intercalating compound K_xMnO₂ can be obtained which is cryptomelane-like in structure and has the channel structure of Mn₈O₁₆,when n(Mn)∶n(CA)=1，n(K)∶n(Mn)=0.17~0.3,and the calcining temperature is 800 ℃.The SEM image shows that the particles of this crystal compound have flake-like morphologies which are regular and flat.

Method for Analysing and Measuring BTEX by Gas Chromatographic

LIU Jiao,ZHA Chong,DU Yatian

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 50-54.

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The method for analysing and measuring the benzene series(BTEX) including benzene,ethylbenzene,o-xylene,m-xylene,and p-xylene is established with gas chromatography,the capillary column and HP-5 detector.The precision and stability of the instrument was verified.The minimum detection limit of benzene,ethylbenzene,o-xylene,m-xylene,and p-xylene with Agilent7890B (with FID flame detector) was identified to be 1.68,2.17,2.018,2.021,1.256 μg/L respectively, This research establishes a basis for the determination of the BTEX concentration in air by GC.

Removal of Ca and Mg Ions from Industrial Manganese Sulfate Solution by Solvent Extraction

DAI Dongyang，LIU Zhixiong，SUN Lin，TANG Liandong，ZOU Xiaoyong

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 55-58.

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Ca and Mg ions were selectively removed from industrial manganese sulfate solution with mixture extractant of P507 and carboxylic acid A.The effects of parameters including initial pH of manganese sulfate solution，concentration and saponification of mixture extractant with mol ratio 1∶1 of P507 and carboxylic acid A，and phase ratio (O/A) were determined.The results showed that Ca and Mg ions were selectively removed under the following conditions of initial pH 2.3 of manganese sulfate solution，20% volume concentration of mixture extractant，20% saponification ratio，O/A=2∶1 phase ratio at 30 ℃，and the yield of manganese reached 83.9%.By treating the solution with carbon adsorption，condensation crystallization and desiccation，manganese sulfate monohydrate with Ca content 38.4 ppm and Mg content 41.7 ppm，which meets requirement of high-purity manganese sulfate，is obtained.

Simulation Research of Airflow Field in the Cleaning Room Tangential-Axial Combine Harvester

LI Fang，OU Qipeng，CAI Fan，Tang Haoran

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 59-62.

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There exist the problems of high rate of loss and great percentage of trash content for tangential-axial combine harvester.In order to analyze the causes for low cleaning performance，airflow field distribution in cleaning room of tangential-axial combine harvester was simulated，with the CFD simulation software to analyze the airflow in the air passage of the cleaning room.The results showed that the cleaning room airflow distribution was symmetrical in the screen surface width direction；the airflow velocity decreased in the height direction gradually；the airflow velocity at the forepart was low in the screen length direction；the velocity reached the maximum near the middle of the screen.Airflow field in cleaning room was also measured to verify the accuracy of the simulation experiment.

Optimization Model of Water Bloom Control in Xiangxi State

LI Jinhu,YE Dongping,TIAN Chen,YANG Shiyun,OU Zujun,XIANG Xi

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 63-66.

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Aiming at the issue of water bloom control in Xiangxi state，algae density is selected as a measurement index and measured by electronic tongue technology.Based on the theory of Fourier series and Logistic model，the optimal water bloom pollution treatment model in Xiangxi region is established，and six commonly used methods of pollution treatment are compared by regret criterion.The results show that it is more economical and effective to handle water bloom pollution with the microorganism flocculating agent enhanced coagulation method from March to May.Finally，the measures to prevent and control water bloom combined with the local characteristics of Xiangxi state are presented.

Evaluation of Comprehensive Efficiency of Land Utilization in Cili County

ZHUANG Dachun,XIANG Shan

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 67-71.

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An evaluation system of comprehensive efficiency of land utilization is built，which covers economic,social and ecological efficiency.The system contains 17 evaluative indexes.Index weight is determined with the analytic hierarchy process (AHP) and entropy method.The comprehensive efficiency of land utilization in Cili from 2005—2014 is evaluated.The result show that there is an upward tendency in the whole comprehensive efficiency of land utilization in Cili county .The economic efficiency shows an obvious uptrend while the social efficiency an up fluctuation;however,the ecological efficiency shows an obvious downtrend.

Construction of Economic Responsibility Audit Evaluation Index System of Leaders Natural Resource Assets

LING Shengchun

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 72-76.

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Economic responsibility audit of natural resource assets，has been proposed by the 3rd Plenum of the 18th Communist Party of China，which is sense to be sustainable economic and social，but how the concrete used in the audit practice，still need to explore. First，this paper analyzes the target of economic responsibility audit evaluation of leaders' natural resource assets，clear the main content and auditees of audit evaluation，secondly try to build economic responsibility audit evaluation index system of leaders' natural resource assets，thirdly discussion this method of audit and evaluation. It aims to provide operational guidance for the Leaders natural resource assets audit.

Training Practitioners in Assessment and Marketing of Dark Green Tea Based on Demand Forecast：Taking Anhua Dark Green Tea as An Example

CHEN Ping

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 77-80.

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With the rapid development of dark green tea industry in Anhua，Yiyang，Hunan province，it is urgent to improve the practitioners' ability in tea assessment and marketing，which will not only solve the contradiction between supply and demand and the problem in the brand construction and management in this industry，but also conforms to the needs of practitioners' career development and the extension of this industry.Based on the research on the professionals cultivation in the major of "Tea Assessment and Marketing" in Hunan Open University，it is shown that the training should not only enhance the practitioners' qualification and help them gain the national qualification，but also cultivate the new type of skilled farmers，integrate the academic and non-academic training，and market the tea into the community, so that training can definitely provide the driving force for boosting the local economic development in Hunan Province.

Analysis on Correlation Between the Red Tourism and the Agriculture，Industry Development in Shaoshan City

XIANG Yanping

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 81-84.

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The correlation analysis，variance analysis and cointegration analysis are conducted based on the data of tourism income (Y_L)，agriculture product (Y_N) and industry product (Y_G) from 2001 to 2015 in Shaoshan city.The results show that the correlation coefficients of the tourism income (Y_L)，the agriculture product and the industry product in the Shaoshan city are 0.913 2 and 0.975 5 which indicates that the Red Tourism and agriculture，industrial development are closely related in Shaoshan city.The covariance value of the tourism income and the agricultural product is 219.480 3 and the covariance value of the tourism income and industrial product is 673.624 8 which indicates that the association of the red tourism with agriculture is less close than that of the red tourism with industrial development.Through the cointegration analysis of the tourism income and agricultural product, industrial product，there is no cointegration relationship between log Y_L and log Y_N which indicates that the co-development of the red tourism and the agriculture is not obvious; there is a cointegration relationship between the log Y_L and log Y_G which indicates that the co-development of the red tourism and the industry is obvious.Therefore, it is necessary to increase the co-development of the red tourism and the agricultural，the industry in Shaoshan city.

Regulation of ATGL Activity and the Relation to Cardiac Hypertrophy

PENG Yingfu,GAO Hui

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 85-90.

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Adipose triglyceride lipase (ATGL) is the rate-limiting enzyme of TG hydrolysis.There is high expression in adipose，liver，heart，and so on. ATGL knockout can result in bulks of triglyceride accumulation and induce significant cardiac hypertrophy in mice or rats. This review focuses on the regulation of ATGL activity and expression and how its dysfunction results in cardiac hypertrophy.

Innovations in Employment of College Graduates in Context of "Internet +"

XIONG Wenbin

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 91-93.

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Starting with the meanings and characteristics of "Internet +"，this article analyzes its influences on college graduates employment，including employment information，vocational counsel，recruitment，business founding，and employment service.Some innovative ideas are offered in aspects of employment service，vocational counsel，evaluation of the employment tendency，psychological adjustment，employment information，and all-round education.

Long-Term Strategies to Promote Students' Physical Health in Tibet Classes of Chinese Mainland from the Perspective of Educational Ecology

SHE Jingfang,QI Xin

Journal of Jishou University（Natural Sciences Edition), 2016, 37(5): 94-96.

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According to the survey and analysis of the current situation of students' physical health in the Tibet Classes of Chinese mainland,the principles and methods to establish long-term strategies to promote those students' physical health are expounded from the perspective of educational ecology.

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