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Generalized two-mode coherent-entangled state with real parameters

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Science China(Physics,Mechanics & Astronomy) 2009年第7期52卷 1027-1033页

作者： xu shimin xu XingLei LI HongQi WANG JiSuo Department of Physics Heze UniversityHeze 274015China Department of Physics Liaocheng UniversityLiaocheng 252059China

The coherent-entangled state |α, x; λ> with real parameters λ is proposed in the two-mode Fock space, which exhibits the properties of both the coherent and entangled states. The completeness relation of |α, x; λ> is proved by virtue of the technique of integral within an ordered product of operators. The corresponding squeezing operator is derived, with its own squeezing properties. Furthermore, generalized P-representation in the coherent-entangled state is constructed. Finally, it is revealed that superposition of the coherent-entangled states may produce the EPR entangled state.

关键词： bipartite coherent-entangled state IWOP technique classical transformation

Optimization of microwave-assisted extraction of wedelolactone from Eclipta alba using response surface methodology

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Frontiers of Chemical Science and Engineering 2014年第1期8卷 34-42页

作者： Dajing SHI Hui DING shimin xu School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China National Engineering Research Center of Distillation Technology Tianjin 300072 China School of Environmental Science and Engineering Tianjin University Tianjin 300072 China

An efficient microwave-assisted extraction tech- nique was used to extract wedelolactone from Eclipta alba. To optimize the effects of the microwave-assisted extraction （MAE） processing parameters on the yield ofwedelolactone, a response surface methodology with a central composite rotatable design was employed. Four independent variables were investigated： microwave power, ethanol concentration, extraction time and the solvent-to-solid ratio. The optimum conditions were： microwave power, 208 W; ethanol con- centration, 90%; extraction time, 26.5 min; and solvent-to- solid ratio, 33 mL.g-~. Under the optimal conditions, the extraction yield of wedelolactone was （82.67±0.16）%, which is in close agreement with the value predicted by the statistical model. MAE was also compared to other conventional methods, including ultrasonic assisted extrac- tion, extraction at room temperature and heat reflux extraction. MAE has distinct advantages for the extraction of wedelolactone in terms of both time and efficiency. Therefore, MAE is a reliable method for the extraction of wedelolactone from Eclipta alba.

关键词： microwave-assisted extraction optimize,response surface methodology wedelolactone

Methanol Distillation System: Process Analysis and Column Design

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化工进展 2005年第Z1期24卷 40-51页

作者： Sun Jinsheng Tian Yufeng xu shimin Ding Hui Wang Tao Li Xingang Zheng Yanmei Shool of Chemical Engineering and Technology Tianjin University Tianjin 300072 National Engineering Research Center for Distillation Technology Tianjin 300072 　　　　　

Base on industrial research and experience, the process of methanol distillation is analyzed,and above all, a new concept of high pressure flowsheet and low pressure flowsheet is defined. The new configuration helps to handle problems encountered in many factories in China. The inter influence between process and column internal pattern is also pointed out. Recommendation of new column internal designs is given. Finally, industrial examples tell the how the new concept works and the possibility of combining process to give more opens to solve engineering problems.

关键词： methanol distillation, two - effect distillation, high pressure flowsheet and low pressure flowsheet, flowsheet analysis, simulation with hydraulic, column internal design

Local Contribution Method for Efficiency of Large Plates

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Chinese Journal of Chemical Engineering 2005年第4期13卷 552-555页

作者：许松林王惠媛徐世民 National Engineering Research Center for Distillation Technology Tianjin University

From the measurement of liquid flow field on a large plate by a hot-film anemometer, three different regions on the large plate were presented, including a liquid circulation area near the inlet down-comer, a region with very slow moving or stagnant liquid on the side of the tray and an active flow region at the center of the plate. According to the contribution of the three regions, the tray efficiency for large plates was proposed. The prediction plate efficiency by the present model are compared with the experimental data in the literature and those calculated by other models. It is shown that the present model is more accurate for prediction of efficiency of large plates, and the calculation is simpler.

关键词： plate efficiency large plate liquid flow field

Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis

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Molecular Plant 2020年第9期13卷 1284-1297页

作者： Zhijuan Wang Ziyin Ren Chunhong Cheng Tao Wang Hongtao Ji Yang Zhao Zhiping Deng Liya Zhi Jingjing Lu Xinying Wu shimin xu Mengmeng Cao Hongtao Zhao Liu Liu Jiankang Zhu Xia Li National Key Laboratory of Crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanHubei 430070P.R.China Center of Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangHebei 050021P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Shanghai Center for Plant Stress Biology Chinese Academy of SciencesShanghai Institutes for Biological SciencesShanghai 200032P.R.China Department of Horticulture and Landscape Architecture Purdue UniversityWest LafayetteIN 47907USA State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Virology and BiotechnologyZhejiang Academy of Agricultural SciencesHangzhouZhejiang 3210021P.R.China College of Life Science and Technology Yangtze Normal UniversityChongqingP.R.China Key Laboratory of Mental Health Institute of PsychologyChinese Academy of SciencesBeijingP.R.China College of Life Sciences in Hebei Normal University ShijiazhuangHebei 050024P.R.China

Seed germination and seedling establishment are important for the reproductive success of plants,but seeds and seedlings typically encounter constantly changing environmental *** inhibiting seed germination and post-germinative growth through the PYR1/PYL/RCAR ABA receptors and PP2C co-receptors,the phytohormone abscisic acid(ABA)prevents premature germination and seedling growth under unfavorable ***,little is known about how the ABA-mediated inhibition of seed germination and seedling establishment is ***,we report that ABA Signaling Terminator(ABT),a WD40 protein,efficiently switches off ABA signaling and is critical for seed germination and seedling *** is induced by ABA in a PYR1/PYL/RCAR-PP2C-dependent *** of ABT promotes seed germination and seedling greening in the presence of ABA,whereas knockout of ABT has the opposite *** found that ABT interacts with the PYR1/PYL/RCAR and PP2C proteins,interferes with the interaction between PYR1/PYL4 and ABI1/ABI2,and hampers the inhibition of ABI1/ABI2 by ABA-bound PYR1/PYL4,thereby terminating ABA *** together,our results reveal a core mechanism of ABA signaling termination that is critical for seed germination and seedling establishment in Arabidopsis.

关键词： ABA ABT ABA signaling PYR1/PYL7RCAR-ABA-PP2Cs complex seed germination post-germinative development

光助Fenton氧化垃圾渗滤液中腐殖质研究

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太阳能学报 2008年第6期29卷 761-766页

作者：丁辉李鑫钢徐世民天津大学化工学院天津300072 天津经济技术开发区博士后工作站天津300072

利用统计学方法对光助Fenton氧化垃圾渗滤液中高浓度腐殖质的影响因素进行探讨和分析。通过Plack- ett-Burman实验设计筛选出FeSO_4·7H_2O的投加量、H_2O_2/FeSO_4·7H_2O比值和初始pH值为主要影响因素,并经过响应面分析优化了这3个因... 详细信息

利用统计学方法对光助Fenton氧化垃圾渗滤液中高浓度腐殖质的影响因素进行探讨和分析。通过Plack- ett-Burman实验设计筛选出FeSO_4·7H_2O的投加量、H_2O_2/FeSO_4·7H_2O比值和初始pH值为主要影响因素,并经过响应面分析优化了这3个因素。通过Design-Expert软件得到1个2次响应曲面模型,并找到了最佳的FeSO_4·7H_2O、H_2O_2/FeSO_4·7H_2O比值和pH值分别为0.013mol/L、4.60、4.45,从而TOC的去除率也达到最大(89.85%)。

关键词：光助Fenton 垃圾渗滤液腐殖质 Plackett-Burman设计法响应面方法 TOC去除率模型

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社会信息能力的内涵及结构

图书情报工作 2003年第4期47卷 30-37页

作者：徐仕敏中国人民解放军63653部队情报资料室

在分析社会信息能力概念内涵的基础上,从层次结构和要素结构两个角度考察社会信息能力的结构,并讨论社会信息能力的结构转化问题。

关键词：社会信息能力内涵层次结构要素结构结构转化

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论社会信息能力的演化

图书情报工作 2003年第7期47卷 36-41页

作者：徐仕敏中国人民解放军63653部队情报资料室

从人、技术、制度和传统4个方面分析社会信息能力演化的依据,归纳出社会信息能力演化的两种模式,并讨论社会信息能力的演进问题。

关键词：社会信息能力演化模式人技术制度政府干预社会信息系统

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太极对预防绝经后女性骨密度的荟萃分析

中国骨质疏松杂志 2012年第10期18卷 932-936页

作者：徐世民刘鹏广西医科大学公共卫生学院南宁530021 人体解剖学教研室

目的评价太极对预防绝经后女性骨密度的影响。方法通过检索数据库搜集太极对绝经后女性骨密度影响的文献。采用Revman5.1软件进行分析,评价指标为骨密度。结果共纳入7篇文献,5篇随机对照试验提示初学太极的绝经女性经过太极训练后可减... 详细信息

目的评价太极对预防绝经后女性骨密度的影响。方法通过检索数据库搜集太极对绝经后女性骨密度影响的文献。采用Revman5.1软件进行分析,评价指标为骨密度。结果共纳入7篇文献,5篇随机对照试验提示初学太极的绝经女性经过太极训练后可减少其骨密度的丢失;2篇横断面研究提示长期有规律的进行太极锻炼可预防绝经后女性的骨密度流失。但方法学上存在差异,Meta分析的结果显示,太极未可改善绝经后女性骨密度。结论目前尚未有足够的证据指出,太极对预防绝经后女性骨密度的影响积极有效。

关键词：太极骨密度骨质疏松症