血清D—二聚体的检测与临床意义

应用胶乳凝集半定量数值换算法对３１０例有关疾病患者进行了血清Ｄ－二聚体的检测分析。以其检出灵敏度＜０２５ｍｇ／Ｌ为正常阴性（≈０１２５ｍｇ／Ｌ）所见,则肝硬化（１４３ｍｇ／Ｌ）、肝癌（１３０ｍｇ／Ｌ）、心肌梗塞（２１３ｍｇ／Ｌ）、脑梗塞（２５３ｍｇ／Ｌ）、脑血栓（１９１ｍｇ／Ｌ）、恶性肿瘤（２２ｍｇ／Ｌ）、新生儿黄疸（３３８ｍｇ／Ｌ）、脑出血（１３４ｍｇ／Ｌ）均明显升高;其次为急性肝炎（０３９ｍｇ／Ｌ）、脑动脉硬化（０３４ｍｇ／Ｌ）、外伤和外科术后（０８４ｍｇ／Ｌ）等也有不同程度并具有不同意义的升高。所有检测阳性或其阳性强度都与机体是否存有能激活外源或（和）内源性凝血途径的因素有关。     

停流—反相流动注射分析法测定环境水样的化学需氧量

以铈（Ⅳ）作氧化剂，利用停流反相流动注射技术测定水样的化学需氧量（ＣＯＤ）．检测范围２５～１６０ｍｇ／Ｌ，采样频率为１２ｈ－１，检测限和标准偏差分别为２１ｍｇ／Ｌ和０９％．     

动力学光度法测定药物、果蔬中的抗坏血酸

基于在硫酸介质中, 抗坏血酸对草酸根加速重铬酸钾－ 碘化钾／ 罗丹明６Ｇ 这一反应体系具有抑制作用, 建立了动力学抑制光度法测定抗坏血酸的新方法． 方法的线性范围为０－１０ ～４－００ｍｇ／Ｌ, 检出限为０－０８ｍｇ／Ｌ． 该方法已用于维生素Ｃ 药片、维生素Ｃ注射液、西红柿、橙子、西芹、西瓜皮中抗坏血酸的测定, 结果令人满意．     

2,6—二硝基甲苯对鲤鱼的毒性

研究测定了２,６－二硝基甲苯（２,６－ＤＮＴ）对鲤鱼的急性和亚致死毒性．亚致死试验经１８０ｍｇ／Ｌ、３６０ｍｇ／Ｌ、５４０ｍｇ／Ｌ、７２０ｍｇ／Ｌ、９９０ｍｇ／Ｌ２,６－ＤＮＴ暴露２１ｄ．在１５℃～１９℃下,２４ｈ、４８ｈ、７２ｈ、９６ｈ的半致死浓度值分别为２５４８ｍｇ／Ｌ、２２９６ｍｇ／Ｌ、２０１２ｍｇ／Ｌ、１９００ｍｇ／Ｌ．亚致死试验中,根据２,６－ＤＮＴ对鲤鱼生长和肝、肾、鳃ＡＴＰａｓｅ活力的影响,求得２,６－ＤＮＴ的最大允许毒物浓度为１８０～３６０ｍｇ／Ｌ．     

亚硒酸钠和抗坏血酸的配合对受冷稻苗某些生理生化特性的影响

０５ｍｇ／Ｌ的亚硒酸钠（Ｎａ２ＳｅＯ３）与５ｍｇ／Ｌ的抗坏血酸（Ｖｃ）配合，根施稻苗，可提高受冷稻苗可溶糖和可溶蛋白质的含量，降低电解质渗漏率，增强ＳＯＤ活性，提高稻苗抗寒力，体现了Ｎａ２ＳｅＯ３与Ｖｃ适当配合的协同效应．     

植物精油对朱砂叶螨的毒性试验

用２６种植物精油在５ｍｇ／Ｌ浓度下熏杀朱砂叶螨２４ｈ，死亡率为１００％的有１０种精油，死亡率在５０％～９９％之间的有８种，死亡率低于５０％的有８种；冬青油、香茅油、薄荷油对朱砂叶螨的毒力ＬＣ５０值分别为０２８９４，０３６６８，０３４７９ｍｇ／Ｌ；冬青油与香茅油合用显示出明显的增效作用，毒性比率为１２８～１４３．结果表明，植物精油对朱砂叶螨有强烈的熏杀毒力．     

Na2SeO3对稻苗生长及谷胱甘肽过氧化物酶的影响

以水稻为材料根施系列浓度的Ｎａ２ＳｅＯ３，试验对稻苗生长以及对苗中ＧＳＨＰｘ的影响．结果表明，低浓度的Ｎａ２ＳｅＯ３（００５～１０ｍｇ／Ｌ）能促进稻苗生长，最适浓度为０５ｍｇ／Ｌ；高浓度（≥２０ｍｇ／Ｌ）则对稻苗产生毒害．稻苗ＧＳＨＰｘ活性高度依赖于Ｓｅ的存在，揭示出该酶可能是一种依赖于Ｎａ２ＳｅＯ３的诱导酶．ＧＳＨＰｘ能有效地抵抗稻苗的Ｓｅ中度中毒，其酶活较对照提高９５８％；对于严重Ｓｅ中毒的稻苗有一定的抵抗作用，其酶活较对照提高６９２％．     

一氧化氮吸入对缺氧性肺动脉高压患者一氧化氮合酶和内皮素的影响

探讨吸入一氧化氮（ＮＯ）对缺氧性肺动脉高压患者一氧化氮合酶（ＮＯＳ）和内皮素（ＥＴ）的影响。方法：１３例肺动脉高压患者行ＮＯ吸入，分别于吸入ＮＯ前、吸入３０ｍｉｎ时、停止吸入２ｈ和１２ｈ时采肺动脉血，测白细胞中的ＮＯＳ及血浆中的ＥＴ。结果：吸入ＮＯ前、吸入３０ｍｉｎ时、停止吸入２ｈ和１２ｈ，所测ＮＯＳ值分别为（０７０±０．２１）ｍｏｌ／ｍｉｎ·ｍｇ－１、（０７４±０１４）ｍｏｌ／ｍｉｎ·ｍｇ－１、（０６４±０２２）ｍｏｌ／ｍｉｎ·ｍｇ－１和（０６３±０１７）ｍｏｌ／ｍｉｎ·ｍｇ－１；所测ＥＴ为（７８８９±４６５９）ｐｍｏｌ／Ｌ、（８８２７±４５４１）ｐｍｏｌ／Ｌ、（８０７６±４２６６）ｐｍｏｌ／Ｌ和（６１０７±２９．４４）ｐｍｏｌ·Ｌ－１；后三者同吸入前比，均Ｐ＞００５。结论：缺氧性肺高压患者吸入ＮＯ对机体ＮＯＳ和ＥＴ未见明显影响     

银杏成熟胚的离体培养研究

用银杏成熟胚为材料,在含不同激素或添加物的培养基上进行萌发出苗培养,结果表明：以６,７－Ｖ＋活性炭１．０ｇ／Ｌ＋水解乳蛋白１．０ｇ／Ｌ＋抗坏血酸１００ｍｇ／Ｌ为最适宜培养基;光照培养比黑暗培养好,培养基中添加０．１ｍ,ｇ／Ｌ的ＮＡＡ能有效地促进萌动胚的胚根伸长和发育成苗;植物激素６－ＢＡ不适合成熟胚的萌发,当其浓度为０．１－１．０ｍｇ／Ｌ时会抑制胚根生长并致胚芽发育畸形。     

正交设计法在白三叶组织培养中的应用

以白三叶的叶片为外植体,采用正交设计法,对愈伤组织生长和细胞悬浮培养的培养基进行了优化筛选。实验结果表明,白三叶叶片愈伤组织生长的最佳培养基配方为ＭＢ＋０．５ｍｇ／Ｌ ２,４－Ｄ＋０．２ｍｇ／Ｌ ＮＡＡ＋１ｍｇ／Ｌ ＢＡ＋２ｍｇ／Ｌ甘氨酸＋１００ｍｇ／Ｌ肌醇＋３％蔗糖＋０．７％琼脂;细胞悬浮培养的最佳培养基的配方为ＭＢ＋４ｍｇ／Ｌ ２,４－Ｄ＋０．２ｍｇ／Ｌ ＮＡＡ＋０．５ｍｇ／Ｌ ＢＡ＋２ｍｇ／     

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.     

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