灵芝提取物对红细胞膜磷脂成分及电泳率的影响

采用家兔红细胞和血小板，以薄层色谱扫描法和显微（细胞）电泳法，探讨灵芝对家兔红细胞膜磷脂成分及电泳率的影响。结果显示：实验组红细胞膜磷脂成分中磷脂酰胆碱显著增多（P＜0．01），而鞘磷脂类，磷脂酰乙醇胺都程度不同的减少（P＜0．05），特别是磷脂酰丝氨酸含量，鞘磷脂类／磷脂酰胆碱及磷脂酰丝氨酸／磷脂酰胆碱比值显著减小（P＜0．01）。血小板及红细胞的电泳率显著高于对照组。表明灵芝对维持细胞膜的稳态有重要作用。     

几类图的伴随多项式的整除性特征

用Ｐｎ和Ｃｎ依次表示有ｎ个顶点的路和圈．Ｄｎ表示Ｋ３的一个顶点与Ｐｎ－２的一个１度点重迭后得到的图．Ｔ（ｌ，ｍ，ｎ）表示度序列是（１，１，１，２，２，……，２，３）的树，其中ｌ，ｍ，ｎ分别是从它的唯一３度点到３个１度点的３条路的长．图Ｇ的伴随多项式记为ｈ（Ｇ，ｘ），本文证明了当Ｇ＝Ｐｎ，Ｃｎ，Ｄｎ，Ｔ（１，１，ｎ），Ｔ（１，２，ｎ），Ｔ（１，３，ｎ），Ｔ（１，４，ｎ）时，ｈ（Ｇ，ｘ）能被ｈ（Ｐｍ，ｘ）（ｍ≥２）整除的充要条件．     

一道数学竞赛题的推广

记Ｂ是由１，２，…，ｎ的循环排列组成的集合，Ａ＿３（ｎ）＝ｍａｘｍｉｎ（ａ＿（ｉ＋１）＋ａ＿（ｉ＋２）＋ａ＿（ｉ＋３）），其中ｉ＝０，１，２，…．ｎ－１，ａ＿（ｎ＋１）＝ａ＿１，ａ＿（ｎ＋２）＝ａ＿２；ａｉ取１．２，…，ｎ中的任意值，ｉ＝１，２，…，ｎ．本文讨论了Ａ＿３（ｎ）的上界：除ｎ＝３，５．６外，当３｜ｎ－１时，Ａ３（ｎ）≤　；当３｜ｎ时，Ａ３（ｎ）≤　；当３｜ｎ＋１时．Ａ＿３（ｎ）≤．     

8种藓类植物的细胞学观察

报道了８种藓类植物孢子母细胞减数分裂中期Ｉ的染色体数，其结果为：（１）反纽藓Ｔｉｍｍｉｅｌｌａａｎｏｍａｌａ（Ｂ．Ｓ．Ｇ）Ｌｉｍｐｒｎ＝１５；（２）小反纽藻Ｔｕｍｍｉｅｌｌａｄｉｍｉｎｕｔａ（Ｃ．ｍｕｌｌ．）Ｃｈｅｎ．ｎ＝１３；（３）真藓ＢｒｙｕｎａｒｇｅｎｔｅｕｍＨｅｄｗ，ｎ＝１０，（４）卵叶美喙藓Ｅｕｒｈｙｎｃｈｉｕｍｓｔｒｉａｔｕｍ（Ｈｅｄｗ），Ｓｃｈｉｍｐ，ｎ＝１２；（５）中华绢藓Ｅｎｔｏ     

稀土离子和肌质网（Ca^2＋＋Mg^2＋）—ATP酶相…

研究了稀土离子对肌质网（Ｃａ＾２＋＋Ｍｇ＾２＋）－ＡＴＰ酶活性影响及其作用机制。结果表明，低浓度Ｇｄ＾３＋对肌质网膜上（Ｃａ＾２＋Ｍｇ＾２＋）－ＡＴＰ酶有激活作用，较高浓度Ｇｄ＾３＋抑制其活性，Ｇｄ＾３＋抑制纯化酶的活性，低浓度Ｇｄ＾３＋对磷脂酸（ＦＡ），心磷脂（ＣＬ）重组酶有激活作用，而对磷脂酰胆碱（ＰＣ），磷脂酰胆碱（ＰＣ）与磷脂酰乙醇胺（ＰＥ）混合物（ＰＣ／ＰＥ）及磷脂酰丝氨酸（ＰＳ）重组酶     

反相高效液相色谱法测定3H状元胶囊中的1α—羟基维生素D3

使用反外ＨＰＬＣ法测定３Ｈ状元胶囊中的１α－羟基维生素Ｄ３，固定相为Ｃ１８，流动相为乙腈：水（９７：３），测定波长为２６５ｎｍ标样线性范围为０．１～１．０μｇ／ｍＬ（ｒ＝０．９９８８，ｎ＝５）最低检出率为０．５ｎｇ，天内天间精密度分别为１．４１％（ｎ＝１０）和２．７２％（ｎ＝３）平均回收率为９９．１％（ＲＳＤ＝２．７８％），该方法用于测定３Ｈ求元胶囊的１α－羟基维生素Ｄ３，取得较满意的结果。     

三次系统指标为正的奇点个数

本文证明了平面动力体系ｄｘ／ｄｔ＝Ｐｎ（ｘ，ｙ），ｄｙ／ｄｔ＝Ｑ２（ｘ，ｙ） （ｎ≥２）的有限远奇点中指标为正的 个数最多有（ｎ＋１）个，而系统ｄｘ／ｄｔ＝Ｐｎ（ｘ，ｙ），ｄｙ／ｄｔ＝Ｑ３（ｘ，ｙ） （ｎ≥３）的有限远奇点中指标为正的 个数最多不超过（３ｎ＋１）／２ ＋２个（ｎ≥３为奇数）或不超过 （ｎ为偶数）．进而得出系统Ｅ３：ｄｘ／ｄｔ＝Ｐ３（ｘ，ｙ），ｄｙ／ｄｔ＝Ｑ３（ｘ，ｙ） 的有限远奇点中指标为正的个数最多不超过７个．     

n阶树的指数分布

设Ｔｎ表示全体ｎ阶树所构成的集合，记Ｔ（ｎ，ｄ）＝（Ｔ∈Ｔｎ│Ｔ中恰有ｄ（≥１个环），本文证明了Ｔ（ｎ，ｄ）的本质指数集合为Ｓｎｄ，为：Ｓｎｌ＝（２，４，．．．２ｎ－２）；Ｓｎ，ｄ＝（２，３，．．．，ｎ－１）∪（ｎ，ｎ＋１，．．．，２ｎ－２ｄ）∩（２ｉ│ｉ＝１，２，．．．ｎ－ｄ）（ｄ≥２）。并证明了Ｔ（ｎ，ｄ）的幂敛指数集Ｓｎ＝（２，３，．．．ｎ－１），进一步刻划了Ｔ（ｎ，ｄ）中本原指数达到２ｎ－     

K_(0.5)(NH_4)_(5.5)[MnMo_9O_(32)]6H_2O的合成及其晶体结构

由ＫＭｎＯ４和（ＮＨ４）６Ｍｏ７Ｏ２４４Ｈ２Ｏ合成了标题化合物Ｋ０．５（ＮＨ４）５．５［ＭｎＭｏ９Ｏ３２］６Ｈ２Ｏ，用ｘ－射线测定了晶体结构．该化合物的晶体属三方晶系，空间群Ｒ３２；ａ＝１５．８４６（４），Ｃ＝１２．３９６（３），Ｍｒ＝１６５７．２８，Ｖ＝２６９５．６３，Ｚ＝３，Ｄｃ＝３．８２ｇ／ｃｍ３，μ＝４１．５ｃｍ－１，Ｆ（０００）＝２９６７．对３０２４个可观测衍射［Ｆ０≥３σ（Ｆ０）］最终偏离因子Ｒ＝０．０３７，Ｒｗ＝０．０４３．结构测定表明：Ｍｎ（Ⅳ）与６个氧配位形成键长相同的ＭｎＯ６八面体，它位于［ＭｎＭｏ９Ｏ３２］６－阴离子的中心，而Ｍｏ（Ⅵ）均与氧原子六配位，形成９个畸变的ＭｏＯ６八面体．     

新型双氧钒—西佛碱酸合物的合成及晶体结构研究

本文以苯酰丙酮，吉拉尔特试剂Ｔ及（Ｃ２Ｈ５）４ＮＶＯ３为原料在无水乙醇溶液中合成了一种新型的钒－西佛碱配合物，用ＤＭＳＯ溶剂进行重结晶，得到结构式为［ＶＯ２（ＰｈＣ（Ｏ）ＣＨＣ（ＣＨ３）ＮＮＣ（Ｏ）ＣＨ２Ｎ（ＣＨ３）３）］０．５ＤＭＳＯ的黄色晶体，该晶体属三斜晶系，空间群为Ｐ１，晶胞参数ａ＝９．８４３（２），ｂ＝１４．１３０（２），ｃ＝１５．９４０（３）Ａ；α＝６７．３７（２），β＝８０．０８（３     

胃癌血清肿瘤标志物的检测及其意义的研究

目的：探讨血清肿瘤标志物与胃癌腹膜转移的关系．方法：收集35例胃癌伴腹膜转移患者血清标本并检测与胃癌相关的肿瘤标志物的水平．结果：CEA、CA19—9、CA-125及CA72—4水平均有不同程度的升高,CA15—3在正常范围内．结论：联合检测CEA、CA19—9、CA-125及CA72—4有助于提高胃癌及腹膜转移的检测率,而CA15—3在胃癌及腹膜转移中无指示作用．     

西洋参根提取液对小鼠腹腔巨噬细胞功能影响的研究

用西洋参根提取液腹腔注射小鼠,观察到注射后腹腔巨噬细胞的数量大大增加,被激活的腹腔巨噬细胞显示活跃的阿米巴运动和大量迅速伸展的伪足,对酵母细胞和鸡红细胞的吞噬活性大幅度提高.此外,腹腔巨噬细胞的酸性磷酸酶活性和酸性α—醋酸茶酯酶活性显著提高,表明其消化机能也大大增强.上述结果提示,西洋参根提取液对小鼠的非特异性免疫功能有促进作用.     

接骨木果实油对小鼠腹腔巨噬细胞吞噬活性的影响

作者以小鼠腹腔巨噬细胞吞噬活性及巨噬细胞酸性磷酸活性指标，检测了接骨木骨实油对小鼠胜利腔巨噬细胞功能的影响。     

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