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International Journal of Agricultural and Biological Engineering 2016年第6期9卷 27-35页

作者： Wang Bing Zheng Lijian Ma Juanjuan Sun Xihuan guo xianghong guo Fei College of Water Resource Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi Conservancy Technical College Yuncheng 044004China

A field experiment using PVC growth tubes was conducted in the Loess Plateau of China to determine the effective root depth(ERD)of winter wheat and its relationship with root distributions and soil water *** water stable isotopes technique was used to estimate the water uptake contributions of different root depths during the growth *** the basis of IsoSource and the Romero-Saltos model,the ERD was 0-40 cm in the majority of the growth ***,in the heading and filling stages,the ERD could reach 60%-75%of the maximum root ***,the contributions to water uptake of different root depths were correlated with variations in soil water and root length density(r=0.395 and 0.368,respectively;p<0.05).However,by path analysis,the low decisive coefficient indicated that root distribution and soil water content did not always follow the same trend as water *** conclusions of this study can help with understanding winter wheat water uptake mechanisms in arid and semi-arid regions and increasing water use efficiency.

关键词： effective root depth water stable isotopes water uptake root distribution soil water content

Kinetic and thermodynamic effects of moisture content and temperature on the ammonia volatilization of soil fertilized with urea

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International Journal of Agricultural and Biological Engineering 2017年第6期10卷 134-143页

作者： Lei Tao guo xianghong Ma Juanjuan Sun Xihuan Feng Yang Wang Hongyu College of Water Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Jinzhong University Jinzhong 030600ShanxiChina

The traditional qualitative analysis of the individual factors on the kinetic and thermodynamic parameters cannot sufficiently reveal the mechanism underlying ammonia volatilization in *** study aimed to determine the effects of temperature,moisture content,and their interaction on the kinetic and thermodynamic parameters,which revealed the key control mechanism underlying ammonia volatilization,modified the traditional Arrhenius model,and established a quantitative prediction model of cumulative NH_(3)-N loss(CNL).Laboratory culture experiments were conducted under different temperatures(T)(15℃,20℃,25℃and 35℃)and moisture contents(θ)(60%,80%,and 100%field capacities).Soil ammonia volatilization was also measured every 2 *** showed that the effects of individual factors and their interaction on the values of reaction rate(K_(N)),Activation free energy(ΔG),and activation entropy(ΔS)followed the descending order of T>θ>T·θ,whereas those of activation enthalpy(ΔH)and activation degree(lgN)followed the descending order ofθ>T>T·θ.The interaction showed significant effect on K_(N)value and insignificant effect on all the thermodynamic *** effects of water and temperature were mainly observed during the preparatory stage and the most critical transition state stage of the chemical reaction,*** thatΔH>0,ΔG>0,andΔS>0,ammonia volatilization is found to be an endothermic reaction controlled by *** new K_(N)(T)-2 model with the determination coefficient(R^(2))of 0.999 was more accurate than the traditional Arrhenius model with the R^(2)of *** new NH_(3)(T,θ)model with the mean absolute percentage error(MAPE)of 4.17%was more accurate than the traditional NH_(3)(T)model with the MAPE of 7.11%.These results supplemented the control mechanism underlying ammonia volatilization in soil fertilized with urea and improved the prediction accuracy of CNL.

关键词： soil ammonia volatilization kinetic parameters thermodynamic parameters soil moisture content urea fertilizer Arrhenius model NH3(T,θ)model

Urease activity and urea hydrolysis rate under coupling effects of moisture content,temperature,and nitrogen application rate

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International Journal of Agricultural and Biological Engineering 2018年第2期11卷 132-138页

作者： Tao Lei Qiongqiong Gu xianghong guo Juanjuan Ma Yong Zhang Xihuan Sun College of Water Science and Engineering Taiyuan University of TechnologyChina China Irrigation and Drainage Development Center Beijing 100054China Jinzhong University Jinzhong 030600China

The traditional qualitative analysis of the individual factors on the kinetic parameters cannot sufficiently reveal the mechanism underlying urea hydrolysis in *** study aimed at revealing the coupling effects of the three factors on urease activity(V_(0)),hydrolysis rate constant(K_(u)),and activation energy(Ea)and establishing the quantitative model for K_(u) under the coupling *** culture experiments were conducted under different temperatures(T)(15℃,20℃,25℃,and 35℃),moisture contents(θ)(60%,80%,and 100%of field capacities),and nitrogen application rates(F)(247 mg/kg,309 mg/kg,371 mg/kg,and 433 mg/kg).The urea content was measured *** showed that the effects of moisture content,temperature,nitrogen application rate,and their interaction on V_(0) and K_(u) were in the descending order:T,F,T^(*)F,θ,T^(*)θ,F^(*)θ,T^(*)θ^(*)*** effect of single factor and two-factor coupling on V_(0) was extremely significant(p<0.01),whereas the effect of the three-factor coupling on V_(0) was *** effects of three factors and their interaction on K_(u) were extremely significant(p<0.01).The effects of moisture content,nitrogen application rate,and their interaction on Ea were in the descending order:F,θ,F^(*)θ.The effects of two factors and their interaction on Ea were not *** mean absolute percentage error(MAPE)values of the established K_(u-1)(θ,T,F)and K_(u-2)(θ,T,F)models were 3.14%and 4.60%,*** MAPE of the traditional Arrhenius model K_(u-3)(T)was 6.75%.The accuracy of the proposed three-factor interaction model was superior to that of the traditional single factor *** results supplemented the mechanism of urea hydrolysis and improved the prediction accuracy of K_(u).

关键词： urease activity hydrolysis rate constant Arrhenius model activation energy coupling effect

Modelling soil water dynamics and root water uptake for apple trees under water storage pit irrigation

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 126-134页

作者： xianghong guo Tao Lei Xihuan Sun Juanjuan Ma Lijian Zheng Shaowen Zhang Qiqi He College of Water Resource Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

Water storage pit irrigation is a new method suitable for apple *** comes with advantages such as water saving,water retention and drought resistance.A precise study of soil water movement and root water uptake is essential to analyse and show the advantages of the *** this study,a mathematical model(WSPI-WR model)for 3D soil water movement and root water uptake under water storage pit irrigation was established based on soil water dynamics and soil moisture and root ***,this model also considers the soil evaporation,pit wall evaporation and water level variation in the *** finite element method was used to solve the model,and the law of mass conservation was used to analyse the water level *** model was validated by experimental data of the sap flow of apple trees and soil moisture in the *** showed that the WSPI-WR model is highly accurate in simulating the root water uptake and soil water *** WSPI-WR model can be used to simulate root water uptake and soil water movement under water storage pit *** simulation showed that orchard soil water content and root water uptake rate centers on the storage pit with an ellipsoid *** maximum distribution region of soil water and root water uptake rate was near the bottom of the *** can reduce soil evaporation in the orchard and improve the soil water use efficiency in the middle-deep soil.

关键词： root water uptake soil water dynamics numerical simulation water storage pit irrigation apple tree

Vapor-Liquid Equilibrium of Ethylene ＋ Mesitylene System and Process Simulation for Ethylene Recovery

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Chinese Journal of Chemical Engineering 2011年第4期19卷 543-548页

作者： guo Jing WU xianghong JING Shuhong ZHANG Qian ZHENG Danxing College of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 China

The amount of ethylene in refinery off-gas is high with a mass fraction of 20%,but the refinery off-gas is usually used as fuel gas in most *** separation and recovery of ethylene is of remarkable significance for saving energy and reducing carbon dioxide *** aim of this paper is to use a novel absorbent mesitylene for the ethylene absorption process and assess its application feasibility through the ethylene + mesitylene vapor-liquid equilibrium data measurement and its binary interaction parameter correlation,as well as the simulation for ethylene separation process.

关键词： ethylene mesitylene vapor-liquid equilibrium process simulation

Renowned Japanese Painter and Honorary Citizen of Zhenjiang Ms. Shinsen Hashimoto

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Voice of Friendship 2005年第3期 35-39页

作者： Xi xianghong guo Guifeng

Cherry flowers were bloom- ing in profusion in Aprilsouth of the Yangtze River. A car was approaching the entrance to the ancient water township of Zhouzhuang. A traffic police signaled the car to stop, came up to it ... 详细信息

关键词： Japanese painting exchanges exhibition circles pol

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俄国的包税制及其废除

世界历史 2010年第2期 95-107页

作者：郭响宏陕西师范大学历史文化学院

包税制曾经是俄国间接税特别是酒税的主要征收方式,是俄国政府一种重要的财政手段。其长处在于使政府财政收入稳定,管理成本低廉,这是沙皇政府支持包税制的主要原因。与其共生的腐败是俄国包税制的一个突出特征,在该制度下形成的庞大腐... 详细信息

包税制曾经是俄国间接税特别是酒税的主要征收方式,是俄国政府一种重要的财政手段。其长处在于使政府财政收入稳定,管理成本低廉,这是沙皇政府支持包税制的主要原因。与其共生的腐败是俄国包税制的一个突出特征,在该制度下形成的庞大腐败利益链与包税制的长期存在有着密切的关系。在俄国大改革初期,社会舆论对包税制的抨击,包税制下腐败肆虐所引发的农民反抗,最终使包税制失去了存在的理由。包税制的废除,稳定了政府的财政收入,推动了俄国商人资本向资本主义工业的转移,消除了与该制度伴生的制度性腐败,标志着俄国旧财政体系的终结和新财政体系的建立。这一改革对于促进俄国市场经济和自由竞争制度的形成、社会结构的调整、经济结构的转型、政治的现代化都有着重要的意义。

关键词：俄国包税制财政

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有关私有财产权的宪法保护问题

理论探索 2005年第6期 141-142,146页

作者：郭相宏太原科技大学山西太原030022

私有财产权是公民的基本权利,作为宪法规范的私有财产权保护条款应包括财产不可侵犯条款、制约条款和征用补偿条款。1982年宪法对于私有财产保护显得不足。中共中央的修宪建议稿提出了保护私有财产权的条款,这在保护私有财产方面是一大... 详细信息

私有财产权是公民的基本权利,作为宪法规范的私有财产权保护条款应包括财产不可侵犯条款、制约条款和征用补偿条款。1982年宪法对于私有财产保护显得不足。中共中央的修宪建议稿提出了保护私有财产权的条款,这在保护私有财产方面是一大历史的进步,但是该条款没有把私有财产列入宪法的基本权利体系,在征用补偿原则和程序方面也存在着问题,这需要在今后加以完善。

关键词：私有财产权宪法保护征用补偿

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根系吸水模型参数的混合遗传算法估算方法

农业机械学报 2009年第8期40卷 80-85页

作者：郭向红孙西欢马娟娟太原理工大学水利科学与工程学院太原030024

构建了遗传算法与Levenberg-Marquardt算法相结合的混合遗传算法，用于求解根系吸水模型参数。分别进行数值试验和棉花根系吸水试验对混合遗传算法求解精度进行验证。数值试验表明，采用混合遗传算法优化求解根系吸水模型参数的优化值... 详细信息

构建了遗传算法与Levenberg-Marquardt算法相结合的混合遗传算法，用于求解根系吸水模型参数。分别进行数值试验和棉花根系吸水试验对混合遗传算法求解精度进行验证。数值试验表明，采用混合遗传算法优化求解根系吸水模型参数的优化值具有较高的精度，含水率资料的时间步长和空间步长对根系吸水模型参数的优化精度有较大影响，在实际中时间步长可取值5～10d，空间步长取值5～10cm。对室内棉花根系吸水进行模拟分析，结果表明混合遗传算法求解的根系吸水模型可以很好地模拟根系吸水。该方法可用于求解根系吸水参数。

关键词：根系吸水模型参数优化混合遗传算法 Levenberg-Marquardt算法

降雨灌溉蒸发条件下苹果园土壤水分运动数值模拟

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农业机械学报 2009年第11期40卷 68-73页

作者：郭向红孙西欢马娟娟太原理工大学水利科学与工程学院太原030024

根据土壤水动力学原理和果树根区土壤水分运动特点,建立了降雨灌溉蒸发条件下含根系吸水项的二维土壤水分运动数学模型,采用有限元法求解,对降雨灌溉蒸发条件下的地表边界条件进行处理。在田间进行了灌溉蒸发条件下果园土壤水分运动验... 详细信息

根据土壤水动力学原理和果树根区土壤水分运动特点,建立了降雨灌溉蒸发条件下含根系吸水项的二维土壤水分运动数学模型,采用有限元法求解,对降雨灌溉蒸发条件下的地表边界条件进行处理。在田间进行了灌溉蒸发条件下果园土壤水分运动验证试验,采用田间实测土壤含水率分布资料对模型进行验证,结果表明模拟值与实测值吻合较好,所建的根区土壤水分运动模型是正确的,采用有限元法求解是可行的,该模型可用于预测果园田间土壤水分运动。

关键词：苹果园土壤水分运动数值模拟有限元法