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高挡土墙的稳定系数[K_c]、[K_0]取值探讨

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铁道学报 1998年第5期20卷 86-90页

作者：黄广军刘昌清彭胤宗龙锦永铁道部科学研究院西南交通大学铁道部第一勘测设计院

由于现场取土困难，或者条件限制不便做土的力学指标试验时，挡土墙设计中往往凭经验取一个综合内摩擦角φ０来代替墙背粘性填土的指标Ｃ、φ值，并按无粘性土的有关公式计算土压力。这样必然造成土压力计算值的“失实”，对于高挡土墙... 详细信息

由于现场取土困难，或者条件限制不便做土的力学指标试验时，挡土墙设计中往往凭经验取一个综合内摩擦角φ０来代替墙背粘性填土的指标Ｃ、φ值，并按无粘性土的有关公式计算土压力。这样必然造成土压力计算值的“失实”，对于高挡土墙尤为严重。如果设计的挡土墙稳定系数仍取［Ｋｃ］＝１．３、［Ｋ０］＝１．５，那么很可能会带来不良的后果。针对这种情况，本文通过计算，分析了稳定系数［Ｋｃ］、［Ｋ０］的主要影响因素，提出了较为合理的取值范围。

关键词：挡土墙稳定系数铁路力学指标试验

柴胡疏肝散体外抗氧化活性成分与调控抑郁症相关酶的关联性分析

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中国实验方剂学杂志 2018年第12期24卷 74-80页

作者：吴金霞贾红梅于猛郑华宋慧梁永红苏志恒邹忠梅广西医科大学药学院南宁530021 中国医学科学院北京协和医学院药用植物研究所北京100193 广西医科大学生命科学研究院南宁530021

目的：研究柴胡疏肝散（CSGS）体外抗氧化活性能力,识别抗氧化活性成分并评价其对CSGS治疗抑郁症的调控能力。方法：将CSGS进行拆方研究,采用1,1-diphenyl-2.picryl-hydrazyl（DPPH）法测定各配伍方自由基清除能力,以半数抑制浓度（IC5... 详细信息

目的：研究柴胡疏肝散（CSGS）体外抗氧化活性能力,识别抗氧化活性成分并评价其对CSGS治疗抑郁症的调控能力。方法：将CSGS进行拆方研究,采用1,1-diphenyl-2.picryl-hydrazyl（DPPH）法测定各配伍方自由基清除能力,以半数抑制浓度（IC50）（清除率为50%时的质量浓度）为评价指标;高效液相色谱法（HPLC）建立特征图谱,利用正交投影偏最小二乘法（orthogonal partial least squares,OPLS）研究特征峰与药效的相关性,根据变异权重系数（variable importance of projection,VIP）来辨识显著活性成分。运用SYBYL 2.0软件对CSGS中的抗氧化活性成分与CSGS治疗抑郁症所调控的相关酶进行分子对接研究,根据Total score值判断小分子与大分子的结合能力。结果：CSGS组方药材对抗氧化药效贡献的大小依次为枳壳〉陈皮〉川芎〉柴胡〉香附〉白芍〉甘草,鉴定出3个具有显著抗氧化活性的成分,分别为橙皮苷、新橙皮苷和芸香柚皮苷。3个抗氧化活性成分与CSGS治疗抑郁症所调控的相关酶的分子对接打分结果均显示了良好的结合能力,其中橙皮苷与色氨酸酶（TPH）,新橙皮苷与超氧化物歧化酶（SOD）,芸香柚皮苷与色氨酸2.3-加二氧酶（TPHD）的结合能分别是9.088 7,8.734 0,9.2.1 8。结论：橙皮苷,新橙皮苷和芸香柚皮苷是CSGS体外抗氧化活性的主要有效成分且在CSGS治疗抑郁症中可能发挥了一定的调控作用。

关键词：柴胡疏肝散 DPPH自由基清除能力体外抗氧化活性分子对接

克罗恩病大鼠模型制备最佳TNBS与乙醇浓度的筛选实验

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中国中医药现代远程教育 2018年第18期16卷 72-75页

作者：张驰肖玲刘涛王园园张国山刘密湖南中医药大学研究生院湖南长沙410007 湖南中医药大学针灸推拿学院湖南长沙410007

目的应用不同浓度TNBS与乙醇的混合液灌肠制备克罗恩病大鼠模型,对比结果进行评价研究,寻求制备克罗恩病大鼠最佳的TNBS与乙醇浓度,为克罗恩病的基础研究提供可靠的动物模型。方法 SPF级大鼠60只,采用分层随机法分为5组;分别予以体积比... 详细信息

目的应用不同浓度TNBS与乙醇的混合液灌肠制备克罗恩病大鼠模型,对比结果进行评价研究,寻求制备克罗恩病大鼠最佳的TNBS与乙醇浓度,为克罗恩病的基础研究提供可靠的动物模型。方法 SPF级大鼠60只,采用分层随机法分为5组;分别予以体积比为1∶1的双蒸水和无水乙醇混合液、2.1的TNBS和50%乙醇混合液、1∶1的TNBS和50%乙醇混合液、2.1的TNBS和无水乙醇混合液、1∶1的TNBS和无水乙醇混合液按0.6 m L/只(100~150 mg/kg)灌肠,比较造模后大鼠不同的一般行为学、粪便及含水量的测定、体重、组织病理学等指标的差异。结果与对照组比较,模型组大鼠出现精神状态差、粪便含水量高、结肠肉眼、镜下观均有不同损伤等现象,提示制备出不同病变程度的克罗恩病动物模型。结论制备克罗恩病大鼠模型所需的最佳TNBS与乙醇浓度比例为TNBS:无水乙醇=2.1。

关键词：克罗恩病 TNBS 动物模型腹泻

A Fast Simulation Method for the Expected Value of Hybrid Variable

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A Fast Simulation Method for the Expected Value of Hybrid Va...

Application of Chaotic Particle Swarm Optimization in the Short-term Electricity Price Forecasting

The Eighth International Conference on Information and Management sciences

作者： Jinwu Gao Qin Wu Uncertain Systems Lab. school of Information Renmin University of China beijing 100872.China

＜正＞Hybrid variable is a tool to describe the quantities with both randomness and *** random variable and random fuzzy variable are instances of hybrid variable.A hybrid system is a system with hybrid variables as system parameters. In practice,many hybrid systems are outside of the set of efficiently solvable problems due to its *** such situations,hybrid simulation provides an alternative way for dealing with hybrid ***,at present,hybrid simulation,especially for calculating the expected value,is time-consuming,which has been baffling the solution of hybrid *** this paper,the convergence as well as convergent speed of hybrid simulation is to be *** use of the control variate technique,a new hybrid simulation schema is *** the variance of each sampling is deduced, the new hybrid simulation schema converges much faster than the traditional hybrid simulation ***,we present some numerical examples to illustrate the efficiency of the new hybrid simulation schema over the traditional one.

关键词： Hybrid variable expected value hybrid simulation control variate technique

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Application of Chaotic Particle Swarm Optimization in the Sh...

2.11 chinese Control and Decision Conference（CCDC）

作者： Jianhua Zhang:school of Control and Computer Engineering,North China Electric Power University,Changping District,beijing 102.06,China..Changhai Yu:school of Control and Computer Engineering,North China Electric Power University,Changping District,beijing 102.06,China.Guolian Hou:school of Control and Computer Engineering,North China Electric Power University,Changping District,beijing 102.06,China.

The market-oriented reform of the electric power industry is a trend around the world,electricity price issues are the key problems in the power markets and how to price the special commodity-electricity is essential for the smooth market *** price forecasting provides crucial information for electricity market participants to make reasonable competing strategies,which is related to the position and benefit of the market *** using the relative historic data in predicting the future electricity price is a very meaningful *** comprehensive considerations of the fluctuation rules and the various influencing factors on the forming of price in the power market,a short-term electricity price forecasting method based on the time series ARMAX model was chosen in this *** to solve the problem with traditional method of parameter identification which is easy to fall into the local least values and has low identification precision,chaotic particle swarm optimization （CPSO） algorithm was proposed in this *** example shows that this method can reflect the law of the development of the electricity price well and improve forecasting accuracy greatly.

关键词： Short-term electricity price forecasting ARMAX model Chaotic particle swarm optimization algorithm

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马克思哲学革命视域下的现代性批判话语

陕西行政学院学报 2007年第4期21卷 27-30页

作者：朱虹吴楠中共中央党校哲学部北京100091

马克思哲学革命的实质在于实现了从现成论的思维方式向生成论思维方式的转向,而推动马克思哲学革命的基本动力是对资本现代性的追问和批判。马克思哲学革命与现代性批判话语的内在关联对当前我国现代性的构建有着重要的指导意义。

关键词：哲学革命现代性批判内在关联

Comparative Study on the Human Driving Force of Cultivated Land and Construction Land Use Change in Hubei Province,China

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Asian Agricultural Research 2010年第3期2卷 10-14页

作者： XU Xin-chuang1,2.CHENG Dong-lai1,LIU Cheng-wu1 1.school of Resources and Environment Science,Xianning College,Xianning 437005,China 2.Institute of Geographical sciences and Natural Resources Research,CAS,{2. 100101,China

Change trend of cultivated land and construction land in Hubei Province is *** years 1998-2.03 are the reduction period of cultivated land;the years 2.04-2.07 are the increase period of cultivated land;the years 1988-2.02.are the slow growth period of construction land;and the years of 2.03 and 2.07 are the increase period of construction *** on related social economic statistical data in 1988-2.07,human driving forces on cultivated land and construction land in Hubei Province are analyzed quantitatively and comparatively by using SPSS software and mathematical statistics *** shows that driving force factors have negative driving effect on cultivated land,and positive driving effect on construction *** force factors have significant differences of driving effects on cultivated land and construction *** principal components affecting the changes of cultivated land and construction land are policy,population and economic development level,and gap between urban and rural living *** three principal components have different degrees of sensitivity on the two land use types and the effects direction are *** other factor driving abilities are relatively weak,and these factors have relatively stronger driving force on construction land than that on cultivated *** is put forward that Hubei Province should implement rational allocation of land resources and scientific and rational use in order to ensure land security and to realize the sustainable development of regional economy and society based on the intensive land use,the planning policy constraints,and the agricultural and industrial production.

关键词： Cultivated land Construction land Factor analysis

Tracking and Stabilization Control of WMR by Dynamic Feedback Linearization

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Tracking and Stabilization Control of WMR by Dynamic Feedbac...

EXPERIMENTAL STUDY ON GLASERITE

2.11 chinese Control and Decision Conference（CCDC）

作者： Miaomiao Ma and Liu Xiangjie are with the school of Control and Computer Engineering,North China Electric Power University,No.2.Beinong Road,Huilongguan,Changping District,beijing 102.06,P.R.China.Chen Hong is with the Department of Control Science and Engineering,Jilin University,Campus NanLing,Renmin Str.5988,13002. Changchun,PR China.

This paper considers the dynamic stabilization and tracking control of wheeled mobile robots （WMR） in the environments without *** reference to the dynamic model of WMR with nonholonomic constraints,a method based on the unifying framework of dynamic feedback linearization with dynamic compensator is presented for solving trajectory tracking as well as posture stabilization *** design procedure is discussed in the basis of dynamics model of *** and simulation results are provided to show the effectiveness of the designed controller.

关键词： Dynamic feedback linearization wheeled mobile robots nonholonomic systems tracking stabilization

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chinese Science Bulletin 1984年第6期29卷 794-797页

作者：韩蔚田杨景明杨照刘建超李友华 beijing graduate {2. Wuhan College of Geology

Much research has been made on the composition and properties of glaserite, but there still exists some controversy. Ever since the 50s, research workers have reported different results. For example, the chemical form... 详细信息

关键词： hexagonal invariant tetra shaped sedimentary solubility rotating sealed quantities 肉声