2,4,7-三硝基-9-芴酮阴极特性研究

研究了以１ｍｏｌ．Ｌ＾－１ＬｉＣｌＯ４／ＰＣ＋ＤＭＥ（１：１）为电解液的ＴＮＦ／Ｌｉ电池的性能和放电机理。电池以０．５ｍＡ．ｃｍ＾－２放电时比容量为８４７．６Ａｈ．ｋｇ＾－１,比能量为６．７＊１０＾６Ｊ．ｋｇ＾－１。该电池存在自放电现象,开状下放置一个月后,容量损失掉３６．２％。     

表面多孔涂层管强化传热技术研究

设计了以烧结法制备铜表面多孔层的工艺过程，并以丙酮作为介质，测试了所制备的多孔表面强化管的传热性能．结果表明，表面多孔管显著地强化了沸腾给热．以０．０７４～０．０４６ｍｍ紫铜粉和Ｒ粉的复合粉烧结多孔管为例，当热通量为２．００×１０４～６．８５×１０４ｋＪ／（ｍ２·ｈ），沸腾给热系数可达２．２３×１０４～５．２８×１０４ｋＪ／（ｍ２·ｈ·℃），比普通光滑管提高８～２４倍；总传热系数可达３８００～６２３６ｋＪ／（ｍ２·ｈ·℃），比普通光滑管提高０．７～６倍     

陕南水镁石纤维（FB）的物理性质研究

水镁石纤维是天然产出的、罕见的高镁实心纤维。其抗拉强度为９５×９．８１×１０￣６Ｐａ，弹性模量为１．５～２．０×９．８×１０￣９ｐａ，显微硬度为７０～２４０，密度为２．４４～２．４８ｇ／ｃｍ￣３。电阻率为３×１０￣５Ω．ｍ～６．１×１０￣７Ω．ｍ，介电常数为４．７～７．２，磁化系数为１１．５～１５．５ｃｍ￣３／ｇ。耐热区间为４５０～４８０℃，导热系数为０．１３１ｗ／ｍ·ｋ，热膨胀系数为５．７～８．８×１０￣（－７）ｍ／℃，热容为１．２６Ｉ／ｇ，热解焓为１９．６ＫＪ／ｍｏｌ。Ｎｅ＝１．５７５～１．５７７，Ｎｏ＝１．５５２～１．５５６，白度７３．５％。本文还讨论了上述物理性质的各种变化、影响因素及其应用。     

非循环Zn－Br电池的性能参数及分析

本电池为水平放置，溴极位于电池底部，锌极与之平行位于上部。以１．５Ａ／ｄｍ２或５．２Ａ电流充电１２小时并以同样电流放电至零伏，电池的库仑效率、能量效率、容量及比能量分别为８２％、５６％、７２Ｗ·ｈ。４２Ｗ·ｈ／ｋｇ或５４Ｗ·ｈ／Ｌ．     

DApBM-V(Ⅴ)-Mn(Ⅱ)-Tween-80体系光度法测定钒(V)

在磷酸介质中，在Ｍｎ（Ⅱ）和Ｔｗｅｎ－８０存在下，ＤＡｐＢＭ与钒（Ⅴ）生成橙黄色化合物，产物至少可稳定３．５ｈ．最大吸收波长为４８５ｎｍ．摩尔吸光系数ε＝４．０１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１和ε＝１．５７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．钒（Ⅴ）量在０．５～３．０μｇ／２５ｍｌ及３．０～１０．０μｇ／２５ｍｌ间符合比尔定律．该体系灵敏度高，选择性较好，用于中草药中痕量钒（Ⅴ）的测定，结果满意     

有机硅膜对醇—水混合物的渗透汽化分离

在硅橡胶中加入交联剂，制备成有机硅膜．该膜对醇－水混合物具有良好的分离性能，实验表明：交联剂的用量，交联方式均对膜性能有很大的影响，膜内支撑材料和料液浓度对膜的渗透性能也有影响，ＨＶ法和ＲＴＶ法制得的透醇膜对酒精的选择因子分别约为７和５，其通量分别约为１５×１０－３ｋｇ／（ｍ２·ｈ）和４０×１０－３ｋｇ／（ｍ２·ｈ）．     

丁基罗丹明B—钨酸钠—PVA高灵敏光度法测定痕量钯的研究

研究了在聚乙烯醇（ＰＶＡ）存在下,钯与钨酸钠和丁基罗丹明Ｂ（ＢＲＢ）反应形成的有色离子缔合物用于痕量钯的光度法测定．最佳条件为：［Ｈ２ＳＯ４］＝１．２ｍｏｌ·Ｌ－１,［ＷＯ２－４］＝９．１×１０－５ｍｏｌ·Ｌ－１,［ＢＲＢ］＝３．０×１０－５ｍｏｌ·Ｌ－１．缔合物的最大吸收位于５７５ｎｍ处,表观摩尔吸光系数ε＝７．９８×１０７Ｌ·ｍｏｌ－１·ｃｍ－１．钯量在０～１０ｎｇ／２５ｍｌ范围内服从比尔定律．体系至少稳定１４０ｈ,检测限（３σ）０．０４８μｇ·Ｌ－１（ｎ＝１０）,对０．４０μｇ·Ｌ－１Ｐｄ（Ⅱ）测定的相对标准偏差为３．３９％（ｎ＝１１）．缔合物的摩尔比为Ｐｄ∶ＢＲＢ＝１∶４．考察了５０多种共存离子的影响．本法已用于炭基和铝基钯催化剂中微量钯的测定,结果满意     

用铁－5－磺基水杨酸树脂相分光光度法测定地下水等样品中的微量铁

研究了Ｆｅ（Ⅲ）与５－磺基水杨酸反应生成的有色配合物定量吸附于树脂上的实验条件．试验表明、反应在ＰＨ９．００～１１．００的氨性介质中显色，与树脂混合搅拌３０ｍｉｎ，吸附达平衡．树脂相配合物的最大吸收波长位于４３０ｎｍ处；表观摩尔吸光系数为８．７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，比水相灵敏度（ε＝５．８×１０３Ｌ·ｍｏｌ－１·ｃｍ－１）提高１５倍．铁含量在０～１．１２ｍｇ·Ｌ－１范围内符合比耳定律．用此方法测定地下水、盐酸试剂样品中的微量铁含量，结果令人满意．     

新试剂5-(3-羧基苯偶氮)-8-氨基喹啉光度法测定铜的研究

合成了新试剂５－（３－羧基苯偶氮）－８－氨基喹啉（ｍ－ＣＰＡＱ）．Ｃｕ（Ⅱ）与ｍ－ＣＰＡＱ反应生成稳定的紫红色１∶３络合物．λｍａｘ为５４４ｎｍ，摩尔吸光系数ε为７．３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．铜量在０～１６μｇ／２５ｍｌ范围内符合比尔定律．方法有高的灵敏度和选择性，用于实际样品分析结果满意．     

锌试剂显色树脂相分光光度法测定微量铜（Ⅱ）

用锌试剂显色在ｐＨ５．０～９．５条件下，铜（Ⅱ）与锌试剂生成绿色配合物与７１７型强碱性阴树脂交换吸附，进行树脂相分光光度法测定微量铜（Ⅱ），λｍａｘ为６４０ｕｍ，铜（Ⅱ）在０～０．５ｍｇ／ｌ范围符合Ｂｅｅｒ定律，表观摩尔吸光系数ε为２．１６×１０５ｌ·ｍｏｌ－１·ｃｍ－１，比水相（ε＝１．９×１０４ｌ·ｍｏｌ－１·ｃｍ－１）提高１１倍．用此法测定天然水中铜（Ⅱ）和钢样中微量铜（Ⅱ）得到满意结果．     

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