红瘰疣螈外周血细胞组织学观察

以采自大理点苍山的红瘰疣螈为材料,应用常规血涂片,Giemsa染色法与血细胞计数法观察并统计红瘰疣螈外周血细胞的形态特征及其数量比例。结果表明:红瘰疣螈的外周血细胞中红细胞有核,呈椭圆形、梨形,平均含量为1.48×105个/mm3。白细胞多呈近圆形,平均含量为0.17×105个/mm3。白细胞中按细胞数量从多到少排列,其顺序依次为淋巴细胞、嗜中性粒细胞、嗜酸性粒细胞、单核细胞和嗜碱性粒细胞。并将研究结果与其他动物进行了比较,从进化、生活习性、环境与血细胞含量之间的关系进行了讨论。     

东北虎幼体血象测定与分析

对13只东北虎幼体的血细胞数、血红蛋白含量、白细胞分类计数和血细胞直径进行了测定,用SPSS软件对实验数据进行统计处理.结果显示:东北虎幼体红细胞数(6.82±0.60)×1012/L,血小板数(415.38±71.51)×109/L,白细胞总数(16.95±2.74)×109/L,血红蛋白含量(118.92±17.24)g/L,嗜中性粒细胞(62.52±9.32)%,嗜酸性细胞(2.88±2.32)%,嗜碱性细胞(0.44±0.58)%,淋巴细胞(28.96±7.50)%,单核细胞(5.32±3.73)%;血细胞平均直径分别为:红细胞6.7μm、嗜中性粒细胞11.0μm、嗜酸性粒细胞11.7μm、嗜碱性粒细胞12.5μm、淋巴细胞8.6μm、单核细胞12.9μm.结论:所测的血液指标在东北虎幼体雌雄性别间均无显著差异(P>0.05).     

麦穗鱼的血液学特征

断尾法取血对麦穗鱼进行血液研究,描述了各类血细胞并对白细胞分类计数,旨在为鱼类血液学和麦穗鱼基础生物学积累资料.结果表明:麦穗鱼多项血液学特征性别间无显著差异,其红细胞数量(2.00±0.23)×106/mm3,血红蛋白含量(64.93±6.13)g/L,血细胞压积35.89%±4.82%,平均红细胞体积(182.19±32.34)fL,红细胞平均血红蛋白含量(32.50±3.73)pg,红细胞血红蛋白含量(184.91±27.56)g/L.血栓细胞数量为(2.93±0.81)×104/mm3,血栓细胞计入和不计入时白细胞数量分别为(4.28±0.93)×104/mm3和(1.34±0.40)×104/mm3.     

双团棘胸蛙血细胞的显微观察

为了探讨双团棘胸蛙(Paa yunnanensis)血细胞的数量和形态特征,为两栖类生理学研究提供基础资料,应用Wright染色法对双团棘胸蛙的血细胞进行了显微观察.结果表明,双团棘胸蛙成熟的红细胞呈长椭圆形,表面光滑,具核,长轴30.33μm,短轴17.43μm;白细胞多呈圆形或椭圆形,其中嗜中性粒细胞长轴27.08μm,短轴19.74μm,嗜酸性粒细胞长轴28.25μm,短轴25.24μm,嗜碱性粒细胞长轴19.55μm,短轴16.97μm,单核细胞长轴24.36μm,短轴23.04μm,小淋巴细胞长轴17.03μm,短轴14.33μm,大淋巴细胞长轴18.41μm,短轴17.00μm,淋巴细胞表面有绒毛状突起;血栓细胞呈长梭形,长轴31.12μm,短轴13.80μm;红细胞最多,血栓细胞最少.     

HPLC法测定金不换各部位中大黄酸、大黄素含量

采用高效液相色谱法测定河南栽培金不换中大黄酸、大黄素的含量,色谱柱为Hy-persilC18柱(250mm×4.6mm×5μm),流动相:甲醇∶0.25%磷酸(体积比80∶20),流速:1.1mL/min,检测波长为436nm.结果:大黄酸在0.154～1.54μg/mL、大黄素在0.412～2.06μg/mL范围内其峰面积积分值与质量浓度之间呈良好的线性关系(r=0.999 6和0.999 9),平均回收率分别为100.2%、99.87%(n=6),RSD分别为1.47%、2.1%.该方法简便、准确,可用于金不换中大黄酸、大黄素含量的测定.     

双波长HPLC-荧光法同时测定褪黑素和维生素B6

建立了双波长高效液相色谱-荧光检测器同时检测保健品中褪黑素和维生素B6含量的方法.考察了不同超声时间、清洗次数对保健品中褪黑素和维生素B6溶出量的影响,并对色谱条件进行了优化.采用Inertsil-100A C18色谱柱(4.6 mm×250 mm,5μm),以甲醇-水(65∶35,体积比)为流动相,流速1.0 mL/min,柱温25℃,进样量10μL.采用双波长法,0～4 min,λ_(ex)=332 nm,λ_(em)=397 nm;4 min后,λ_(ex)=286 nm,λ_(em)=352 nm.在优化的样品预处理条件、色谱条件下,维生素B6和褪黑素分别在0.1～100μg/L和1.0～1 000μg/L内线性关系良好(r≥0.998),最低检出限分别为3×10~(-3)μg/L和3×10~(-2)μg/L;定量限分别为1×10~(-2)μg/L和1×10~(-1)μg/L,平均回收率分别为99.07%和97.97%(n=3),相对标准偏差为0.04%～0.98%.本方法检测快速,灵敏,重现性较好,可用于保健品中褪黑素和维生素B6的同时测定以及市售保健品的质量控制.     

我国小鲵科几个属分类问题的探讨

对有尾两栖类小鲵科Hynobiidae山溪鲵属Batrachuperus、巴鲵属Liua、小鲵属Hynobius分类研究中的同物异名 ,以及属称的订正方面进行了探讨 ,认为我国山溪鲵属应为 6种 ,巴鲵属是一个有效属称 ,无唇褶山溪鲵Boulengercochranae应为北方山溪鲵BatrachuperusBtibetanus的同物异名 ;义乌小鲵Hynobiusyiwuensis应为中国小鲵H chinensis的同物异名 ,黄斑拟小鲵Pseudohynobiusflavomaculatus可以暂定为秦巴北鲵Ranodontsinoaensis的同物异名 ;黑爪异鲵Xenobiusmelanonychus是否一个新种有待确定     

原尾蜥虎(Hemidactylus bowringii)血细胞的形态学观察

本文报道了原尾蜥虎外周血细胞的显微观察结果。用 Wright氏染料染色 ,原尾蜥虎的外周血中可区分出下列各类血细胞 :红细胞、嗜中性粒细胞、嗜酸性粒细胞、嗜碱性粒细胞、单核细胞、淋巴细胞和血栓细胞 ,还可见到较多的幼稚红细胞。原尾蜥虎血细胞的一大特点是嗜碱性粒细胞较多 (约占白细胞总数的 10 % ) ,这可以为研究嗜碱性粒细胞的功能提供一个较好的动物模型     

高效液相色谱法测定保健食品中维生素B12的含量

采用高效液相色谱法测定保健食品中维生素B12含量,色谱柱用Agilent ZORBAX SB-Aq (4.6mm×250mm,5μm), 流动相为甲醇-0.2%磷酸水溶液(38:62),流速1.0ml/min,检测波长361nm.结果是维生素B12线性范围为0.816～4.08μg,r=0.9997;平均回收率为97.2%,RSD为1.39%(n=6),最小检出限为0.85μg/g.高效液相色谱法灵敏度高,操作简便,重现性好,结果准确,可以用于保健食品中维生素B12的质量控制.     

HPLC测定药品中多贝斯的含量

采用hypersil ODS-C18色谱柱(150×4.6 mm,5μm);以甲醇-水=70:30(V/V)为流动相,流速为1.0 mL/min,柱温为室温,检测波长为301 nm,外标法测定了多贝斯胶囊中多贝斯的含量.多贝斯在1～60μg/mL浓度范围内,峰面积(A)与浓度(C)呈现出良好的线性关系,回归方程为A=-3 019.9 7 127.9 C(μg/mL)(r=0.999 6),此方法的最低检出限为0.1μg/mL.多贝斯在水溶液和尿液中的回收率分别在97.20%～101.0%和97.90%～101.5%之间,重现性良好.本法准确、简单、快速,可应用于药物制剂中多贝斯的质量监控.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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