纳米晶Ni—P合金蠕变的研究

用非晶晶化法制备了Ｎｉ８０Ｐ２０２合金的纳米晶度薪和作为对比的粗晶试样，由０．５Ｔｍ附近的拉伸蠕变实验得出，纳米晶和粗晶度样的蠕变激活能力分别为０．７１ｅＶ和１．１ｅＶ，应力指数分别为１．２和２．５。由此认为，纳米晶试样的蠕变主要由界面扩散机制控制，而粗晶试样的为蠕变可能由一种复合机制控制。     

化学交联反应注射成型聚氨酯脲的结构与性能关系

用Ｌ－ＭＤＩ／ＤＥＴＤＡ／ＧＨ－３５０Ｈ制备了化学交联的ＲＩＭ ＰＵＵ弹性体，硬段含量为３７％，考察了催化剂浓度和种类对微相分离形态和力学性能影响，实验结果表明，提高催化剂浓度限制了化学交联体系ＲＩＭ ＰＵＵ的微相分离，使相间距有所增加，软段玻璃化温度几乎不受影响，实验制备的ＲＩＭ ＰＵＵ弹性体模量－温度稳定性好，拉伸强度为１２ＭＰａ，伸长率达２００％。     

铈对Ni_3Al性能的影响

在含２０．５ａ％Ａｌ的Ｎｉ３Ａｌ合金中加入铈的研究结果表明：（１）含饰量大约高于０．０４ｗｔ％合金的冷轧性能很差，无法轧成薄材；（２）含铈量为０．０１１ｗｔ％的Ｎｉ３Ａｌ合金，在５５０℃等温１２０ｈ和１２００℃等温０．５ｈ的室温延伸率可达１６％，σｂ为９００ＭＰａ左右，断口为穿晶断裂形貌，综合机械性能好；而７５０℃等温４０ｈ和１０００℃等温１ｈ的室温延伸率仅为３％，σｂ为５００ＭＰａ左右，断口为沿晶形貌，综合机械性能差。     

刚性无机粒子对PDMS／PU共混体系增强改性研究（Ⅰ）

采用刚性无机粒子（ＳＩＯ２）填充不相容聚二甲基硅氧烷／聚氨酯（ＰＤＭＳ／ＰＵ）共混体系．重点研究了ＳｉＯ２表面处理剂种类、ＳｉＯ２填充量对不同结构的ＰＤＭＳ／ＰＵ共混体系力学性能的影响关系．研究结果表明：ＳｉＯ２经过适当偶联剂表面处理后，能显著地提高ＰＤＭＳ／ＰＵ（Ｍ）、ＰＤＭＳ／ＰＵ（Ｐ）共混物的力学性能，其抗张强度分别由３．４ＭＰａ、４．５ＭＰａ提高到１２．３ＭＰａ和９．０ＭＰａ．     

刚性无机粒子对PDMS／PU共混体系增强改性研究（I）

采用刚性无机粒子（ＳｉＯ２）填充不相容聚二甲基硅氧烷／聚氨酯（ＰＤＭＳ／ＰＵ）共混体系，重点研究了ＳｉＯ２表面处理剂种类、ＳｉＯ２填充量对不同结构的ＰＤＭＳ／ＰＵ共混体系力学性能的影响关系，研究结果表明：ＳｉＯ２经过适当偶联剂表面处理后，能显著地提高ＰＤＭＳ／ＰＵ（Ｍ）、ＰＤＭＳ／ＰＵ（Ｐ）共混物的力学性能，其抗张强度分别由３．４ＭＰａ、４．５ＭＰＡ提高到１２．３ＭＰａ和９．０ＭＰａ。     

纳米晶Fe—B—Si合金的高温蠕变

研究了Ｆｅ７８Ｂ１３Ｓｉ９合金纳米晶（２７ｎｍ）和粗晶（２５０ｎｍ）试样的高温拉伸蠕变。纳米晶和粗晶试样蠕变初期阶段的应变－时间关系均符合Ａｎｄｒａｄｅ的指数律。根据稳态蠕变激活能和应力指数的数值，认为纳米晶试样的蠕变由界面扩散机制控制，而粗晶试样的蠕变由一种复合机制控制。文中报道的Ｆｅ－Ｂ－Ｓｉ合金与以前报道Ｎｉ－Ｐ合金高温蠕变的结果有相同的规律。     

透明低温凝胶力学性能的研究

采用低温处理方法，制得了含液量在８５％以上，透光度高达９９％且具有较高强度和模量的“ＰＶＡ－ＤＭＳＯ－水”凝胶，用单向压缩和单向拉伸法研究了其力学性能，实验发现，该低温凝胶的弹性模量随两混合溶剂配比的不同而发生变化，在ＷＨ２Ｏ／ＷＤＭＳＤ＝２０／８０时，弹性模量最大，此时该凝胶的透明性最好，随着低温处理时间的增长，凝胶模量也增大，同时凝胶模量也随着体系中聚合物浓度的增大而增大。     

Al_2O_3／nano－SiC复相陶瓷力学性能及显微结构

研究了热压烧结Ａｌ２Ｏ３／ｎａｎｏ－ＳｉＣ复相陶瓷的力学性能及显微结构。研究表明,纳米ＳｉＣ的引入显著地改善了材料的力学性能,在ＳｉＣ添加体积分数为１０％时,Ａｌ２Ｏ３／ｎａｎｏ－ＳｉＣ复相陶瓷抗弯强度σｆ达峰值为８６９ＭＰａ,断裂韧性ＫＩｃ也达峰值为６．７ＭＰａ·ｍ０．５,比纯Ａｌ２Ｏ３基体材料分别提高１３８％和８１％。ＴＥＭ观察表明：纳米ＳｉＣ晶粒主要存在于Ａｌ２Ｏ３基体晶粒内部,形成独特的“晶内型”结构。当受外力作用时,既能因弥散的纳米颗粒诱发穿晶断裂,且穿晶断裂时,还能因晶内存在第二相颗粒而引起裂纹偏转,起到增强增韧作用。     

强度和导电率都高的新框架材料

强度和导电率都高的新框架材料神户制钢所开发出拉伸强度８４６ＭＰａ，导电率４８％ＩＡＣＳ，二者都好的最高水平的引线框架材料。基本组成为Ｃｎ－３．ＺＷｔ％Ｎｉ－０．７Ｗｔ％Ｓｉ－ＩＷｔ％Ｚｌｌ，与已有的框架用钢合金一样，但把合金内析出的镍硅化合物Ｎｉ。Ｓ...     

纳米ZrO_2颗粒强韧MoSi_2基复合材料

研究了热压纳米ＺｒＯ２粒子强韧ＭｏＳｉ２基复合材料的显微结构与力学性能，初步探讨了纳米ＺｒＯ２粒子的增韧补强机制．结果表明，复合材料的室温断裂韧性有了较大的提高，ＫＩｃ达到５．７９ＭＰａ·ｍ１／２．ＳＥＭ观察表明纳米ＺｒＯ２粒子既分布于基体材料的晶界同时也存在于晶粒内部，断口形貌呈现出沿晶与穿晶的混合型断裂特征．复合材料的韧化效应是由ＺｒＯ２粒子引起的相变韧化、晶粒桥接以及裂纹偏转等机制的综合作用．     

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。     

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.     

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.