引种与野生绞股蓝药用成分比较研究

对海南岛引种与野生的６种绞股蓝总皂甙、氨基酸、微量元素及营养物质化学成分的含量变化．迸行了比较分析．结果表明：总皂甙、皂甙元高效薄层层析色谱（ＨＰＴＬＣ）主要斑点（９～１１）与人参皂甙基本一致，唯有引种的任梗绞股蓝斑点Ｒｆ值递变较大（０．２８～０．８９）；总氨基酸含量，不管野生或栽培种，均以绞股蓝＞喙果绞股蓝＞单叶绞股蓝＞疏花绞股蓝；微量元素含量是引种、野生的Ｓｉ、Ｆｅ、Ｍｎ普遍高于人参总皂甙；各种矿质元素含量变化差异依Ｓｉ＞Ｆｅ＞Ｚｎ＞Ｍｎ＞Ｓｒ＞Ｃｕ＞Ｓｂ＞Ｃｒ＞Ｐｂ＞Ｍｏ＞Ｓｅ＞Ｎｉ＞Ｖ＞Ｃｏ．     

有氧运动及人参总皂甙对衰老大鼠抗氧化指标含量的影响

采用有氧运动或/和补充人参总皂甙的方法,对衰老大鼠进行4周的实验干预,观察有氧运动或/和补充人参总皂甙对自然衰老大鼠血清总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)等指标含量的影响.结果显示:通过有氧运动或/和补充人参总皂甙的干预,与对照组(A组)相比,补充人参总皂甙组(C组)和有氧运动联合补充人参总皂甙组(D组)血清的T-AOC、CAT含量明显升高(P<0.05),而血清SOD含量无明显变化(P>0.05);有氧运动组(B组)各项指标含量变化均不明显(P>0.05).实验结果提示,无论是单纯的补充人参总皂甙还是有氧运动联合补充人参总皂甙都能提高衰老大鼠血清T-AOC、CAT含量,这对增强衰老个体的抗氧化能力有重要意义.     

中华雪胆中总皂甙和齐墩果酸的含量测定

为建立中华雪胆中总皂甙和齐墩果酸的含量测定方法,分别采用比色法和高效液相色谱法测定中华雪胆中的总皂甙和齐墩果酸的含量,测得中华雪胆中总皂甙的含量为2.53%,总齐墩果酸的含量为1.15%,游离型齐墩果酸的含量为0.010 5%,该方法操作简便、结果可靠,可用作中华雪胆中总皂甙和齐墩果酸的含量测定.     

不同因子对绞股蓝培养细胞的总皂甙和总黄酮影响的初步分析

不同光照条件对绞股蓝培养细胞的总皂甙含量无显著影响,在光照条件下总黄酮含量较黑暗条件下高．在蔗糖30g／L、葡萄糖40g／L时,总皂甙和总黄酮的含量最高．琼脂糖浓度0．1％时,最有利于总皂甙和总黄酮的积累．     

百合总皂甙的提取工艺

以百合中总皂甙含量为考察指标,应用正交设计对百合总皂甙提取工艺中的温度、乙醇体积分数、固液比、回流时间和提取次数进行了研究;以薯蓣皂甙为标准,香草醛-高氯酸为显色剂,冰醋酸为溶剂,用紫外可见分光光度计在波长为540 nm处对百合总皂甙的含量进行了测定.得出百合总皂甙的最佳提取工艺条件是:温度为70 ℃,乙醇体积分数为80%,固液比为1:6,提取时间为3 h,提取次数为3次;百合中总皂甙的含量为3.48 mg/g.     

多花黄精总皂甙的提取研究

以75％乙醇为溶剂，分别用加热回流法、索氏抽提法、超声波提取法和微波提取法提取多花黄精中的总皂甙，再用 AB-8大孔树脂纯化提取液，以人参皂苷 Rb1为参照品，用香草醛-高氯酸比色法测定总皂甙含量。结果表明：超声波提取法提 取总皂甙具有快速、高效等优点，每100g 多花黄精干粉能提取总皂甙约702mg。     

人参皂甙Rb1和人参总皂甙对运动性疲劳大鼠骨骼肌生化指标的影响

探讨人参皂甙Rb1和人参总皂甙对运动性疲劳大鼠骨骼肌生化指标的影响,将大鼠分为空白组、模型组、人参皂甙Rb1组和人参总皂甙组。采用中等强度的跑台运动建立动物模型,给药后运动连续实验两周后,检测骨骼肌线粒体膜电位、胞内钙离子含量、MDA含量、SOD活性和葡萄糖含量。结果发现人参皂甙Rb1和人参总皂甙都能抑制骨骼肌细胞内钙稳态失衡和线粒体膜电位降低、降低骨骼肌细胞MDA含量、增强SOD活性、增加从血液摄取的葡萄糖含量（均有P〈0.05）,从而抑制运动所致骨骼肌细胞损伤、发挥抗运动性疲劳作用。但在恢复膜电位和降低MDA含量方面,人参总皂甙效果更优;而在恢复线粒体内游离钙含量、提高SOD活性和摄取葡萄糖方面,人参皂甙Rb1的效果更明显。     

绞股蓝及其总皂甙中硒含量的测试研究

用荧光光度分析法测试了绞股蓝及其总皂甙中硒的含量,结果表明:湖北鹤峰绞股蓝植物中硒的含量为队0.395ppm,采用溶剂法提取的绞股蓝粗总皂甙中硒含量为0.180ppm。     

D-101大孔吸附树脂纯化苜蓿总皂甙的工艺研究

利用D-101大孔吸附树脂,采用比色法,对富集、纯化苜蓿总皂甙的工艺参数及吸附量的影响因素进行了初步研究.结果表明:当乙醇浓度为70%,吸附时间为2 h时,具有很好的富集、纯化效果;纯化前总皂甙含量为5.67%,纯化后总皂甙含量可达36.02%;并且D-101大孔吸附树脂具有较大的吸附容量,重复使用也可得到较高的吸附量.     

剑叶金鸡菊植株不同器官总黄酮和总皂甙含量的测定

采用冷浸提取、超声波提取及索氏提取法研究了剑叶金鸡菊(Coreopsis lanceolata)不同器官总黄酮和总皂甙的含量.结果 表明,剑叶金鸡菊花总黄酮和总皂甙含量显著高于根、茎和叶的含量.超声波提取方法操作简便、快速,提取效率高,在粗提中显示明显的优势,利用该方法提取剑叶金鸡菊花总黄酮含量可达24.33 mg/g...     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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