绝缘子闪络毁伤特性实验研究

为了在战时能够有效打击敌方的电力系统,造成电力系统外绝缘设备永久毁坏,受绝缘子污秽闪络现象启发,提出了一种新概念的反电力系统软杀伤技术原理.利用自行研制的专用实验设备,对涂覆导电液体材料的典型绝缘子进行了高压闪络实验.得到了导电液体的分布状态和涂覆密度对闪络电压影响的初步规律.实验结果表明,将绝缘子污秽闪络原理应用于电力毁伤技术是完全可行的,并且具有很好的效果.     

二电极法在导电水泥电阻测试中的应用研究

利用石墨作为导电相材料,配制出水泥基导电复合材料,采用包括直接读取法和伏安法的二电极法对导电水泥的电阻进行了测试应用研究,通过比较两种不同方法的实验结果,得出了伏安法测试技术合理可行的结论,为研究导电水泥电阻测试方法提供了一定的参考。     

导电高分子材料

介绍了新型导电高分子材料的分类、性能、导电机理，对提高导电高分子材料的导电性及力学性能的途径、应用以及发展前景作了探讨。     

导电橡胶多参数综合测量系统

导电橡胶是将铝镀银,炭黑等导电颗粒均匀分布在硅橡胶中,通过对其施加压力使导电颗粒接触,以此达到良好的导电性能.导电橡胶多参数综合测量系统通过以现场可编程门阵列(FPGA)为运算核心的三个测量模块:压力测量模块、电阻测量模块和位移测量模块,对导电橡胶样品的力学特性和电学特性进行实时测量,将测量的数据在上位机实时显示并通过采样绘制出二维曲线图,上位机将二维曲线图进行计算分析后,得出导电橡胶样品是否合格的结论.     

等离子体热解焦油制备导电炭黑

用电弧产生的Ar、N2或空气等离子体热解乙烯焦油制备炭黑，检测了所产生的炭黑的物化性能．X射线衍射和高分辨率透射电镜分析了样品的微观结构．与乙炔炭黑进行比较，这种方法产生的炭黑在微观结构、导电性能、盐酸吸液量、吸油值等方面具有类似乙炔炭黑的性质．还初步分析了炭黑物化性能、结构之间的关系以及工艺条件对它们的影响．等离子体制备导电炭黑的电能消耗为每升原料油1～2kWh，在高功率下炭黑样品为纳米石墨粉．     

自修复导电聚酰胺复合材料的制备及性能研究

首先采用水热法制备出铁镍合金,然后将铁镍合金加入到含有超分子氢键网络的聚酰胺高分子基体中,得到一种具有导电性能的自修复高分子材料。通过扫描电子显微镜、X-射线衍射仪、电阻率测定仪等手段对样品的结构、形貌、导电及自修复性能进行了研究。结果表明,原料中Fe2+与Ni2+的摩尔比对铁镍合金形貌影响较大。当Fe2+与Ni2+摩尔比为70∶25时,产物形貌较规整。添加铁镍合金后,高分子材料的电导率呈上升趋势。当铁镍合金质量分数为45%时,自修复导电高分子材料的修复率达80%。     

Li2O掺杂Li4SiO4导体材料的合成及离子导电性研究

采用溶胶－凝胶法,经Li2O掺杂,合成了Li4SiO4-xLi2O(x=0.00-0.50)离子导体材料,并用DTA－TG,XRD及交流阻抗等技术对样品进行了测试,结果发现,用溶胶－凝胶法可降低Li4SiO4的合成温度;随Li2O的掺入可增强基质材料的致质材料的致密性提高了其离子的导电性能,而以x=0.30为最佳。     

聚苯胺的化学合成、结构及导电性能

导电聚苯胺是结构和性能最稳定的导电高分子材料，有较广泛的应用前景。本实验用化学氧化合成方法，较系统地研究了氧化剂种类、用量、介质酸的浓度以及聚合反应温度等因素对苯胺聚合反应及产物性能的影响；找出了最适宜的合成反应条件和特殊的后处理工艺，并合成出了电导率高达３０．６５Ｓ／ｃｍ，收率达１２７．８％的高性能导电聚苯胺     

固体电解质Li4+xBxSi1-xO4-yLi2O的合成及导电性

用溶胶－凝胶法制备了Li4 xBxSi1-xO4-yLi2O(x=0.1-0.6;y=0.0-0.5)离子导体材料，并用DTA－TG，XRD及交流阻抗等技术对样品进行了测试，结果发现用溶胶－凝胶法可降低Li4 xBxSi1-xO4的合成温度；随Li2O的掺入可增强基质材料的致密性并可提高其离子的导电性能。     

纳米ZnO/ITO导电玻璃复合材料的制备及其光学性能研究

简单硝酸锌水溶液中采用两步法电沉积技术在ITO导电玻璃衬底上沉积出透明致密ZnO薄膜.利用X射线衍射、热重—差热、光致发光谱和透射光谱对样品的结构、组成和光学性能进行了表征.结果表明:所制备的ZnO具有六角纤锌矿结构,平均粒径为纳米级,组成稳定、单一.光学测试结果表明其具有良好的发光性能,可见光区透光度高达80%.     

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.     

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.     

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.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.