铁基非晶态合金晶化过程激活能的测定

阐述了Ｏｚａｗａ图法和Ｋｉｓｓｉｎｇｅｒ图法在测定铁基非晶态合金晶化过程激活能方面的应用，在满足不同加速率下的晶化温度所对应的晶化程度相同的前提下，用Ｏｚａｗａ图法和Ｋｉｓｓｉｎｇｅｒ图法测出的非晶态Ｆｅ７９Ｂ１６Ｓｉ５合金预晶化相α－Ｆｅ析出阶段的激自觉自愿能分别为３８２～４０７Ｋｊ／ｍｏｌ（Ｏｚａｗ图法）和３７４～３３９Ｋｊ／ｍｏｌ（Ｋｉｓｓｉｎｇｅｒ图法）测定结果十分接近，说明上述２种方法测     

Fe78B13Si9非晶合金纳米晶化的亚结构

用高密度脉冲电流处理Ｆｅ７８Ｂ１３Ｓｉ９非晶合金，随电流密度的变化在不同的温度下和相同的时间内实现了试样的纳米晶化，透射电镜观察及Ｘ射线衍射分析表明，在由电脉冲方法所制备的纳米晶Ｆｅ７８Ｂ１３Ｓｉ９合金中存在着亚晶和孪晶等亚结构，三种晶化相是α－Ｆｅ（Ｓｉ）Ｆｅ２Ｂ和少量的Ｆｅ３Ｂ．随着电流密度的增加，试样中Ｆｅ２Ｂ相略有增加并出现了有序的Ｆｅ３Ｓｉ结构，但平均晶粒尺寸保持不变，由Ｓｈｅｒｒｅｒ方     

快淬NdFeB永磁合金的晶化行为

采用动态差示扫描量热法（ Ｄ Ｓ Ｃ） 和 Ｘ 射线衍射法（ Ｘ Ｒ Ｄ） 研究了快淬 Ｎｄ Ｆｅ Ｂ合金的晶化行为。非晶态 Ｎｄ８ ．５ Ｆｅ８６ Ｂ５ ．５ 合晶化由三个过程组成,各转变有效晶化激活能分别为４ ．８ｅ Ｖ、１５ ．２ｅ Ｖ 和５ ．４ｅ Ｖ。非晶态 Ｎｄ７ ．５ Ｄｙ１ Ｆｅ８５ Ｂ４５ Ｇａ２ 合金直接由非晶态转变为α－ Ｆｅ和 Ｎｄ２ Ｆｅ１４ Ｂ 相,有效晶化激活能为５ ．８ｅ Ｖ。     

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。     

静高压在多层Al／Fe—Mo—Si—B纳米合金复合材料…

在３￣５．５ＧＰａ的压力范围内，经过８７３Ｋ，３０ｍｉｎｈ等温热处理由非（Ｆｅ０．９９Ｍｏ０．０１）７８Ｓｉ９Ｂ１３（ＦＭＳＢ）条带和纯金属Ａｌ片交替叠成的样品，制备出多层Ａｌ／Ｆｅ－Ｍｏ－Ｓｉ－Ｂ纳米合金复合材料。研究了静高压在复合材料制备中影响非晶ＦＭＳＢ合金晶化相，Ｆｅ－Ｍｏ－Ｓｉ－Ｂ纳米合金晶粒度和Ａｌ／Ｆｅ－Ｍｏ－Ｓｉ－Ｂ复合材料界面相的规律及机制。     

Co—（Cu,Ni）—B体系非晶态合金的制备及其热稳定性

用化学法制备了Ｃｏ－Ｂ、Ｃｏ－Ｃｕ－Ｂ及Ｃｏ－Ｎｉ－Ｂ非晶态合金。电子衍射表明合金为非晶，透射电镜证实合金是粒径约２０ｎｍ的球状颗粒。以示差量热法及Ｘ衍射分析研究了非晶态合金的热稳定性、晶化激活能及晶化行为。结果表明：激活能数据能从能量角度解释Ｃｏ－Ｂ热稳定性高于Ｃｏ－Ｃｕ（Ｎｉ）－Ｂ；非晶态合金的晶化过程是随处理温度升高而逐步进行的。     

激波作用下三种铁基非晶合金的纳米晶化

在气体激波管中，利用激波对非晶的直接作用，在微秒量级时间内，成功地将ＦｅＢＳＩ，ＦｅＭｏＢＳｉ及ＦｅＣｕＮｂＢＳｉ等非晶合金转变成为纳米晶，主晶化相晶粒平均尺寸在２０－６０ｎｍ范围，晶化相分数〉９５％和常规退火晶化比较，激波晶化在晶化相，晶化动力学和晶化机理等方面具有一系列独有的特点。     

Co－（Cu，Ni）－B体系非晶态合金的制备及其热稳定性

用化学法制备了Ｃｏ－Ｂ、Ｃｏ－Ｃｕ－Ｂ及Ｃｏ－Ｎｉ－Ｂ非晶态合金，电子衍射表明合金为非晶，透射电镜证实合金是粒径约２０ｎｍ的球状颗粒。以示差量热法及Ｘ衍射分析研究了非晶态合金的热稳定性、晶化激活能及晶化行为。结果表明：激活能数据能从能量角度解释Ｃｏ－Ｂ热稳定性高于Ｃｏ－Ｃｕ（Ｎｉ）－Ｂ；非晶态合金的晶化过程是随处理温度升高而逐步进行的。     

用MTGA法研究非晶合金的纳米晶化过程

用ＭＴＧＡ测量ＦｅＣｕＮｂＳｉＢ非晶样品的表观失重与温度关系σ－Ｔ和ｄσ／ｄＴ－Ｔ,发现非晶合金晶化过程可区分为５个不同阶段．研究经７５３～８８３℃等温退火１ｈ的样品发现,Ｔａ升高,析出的磁纳米晶体αＦｅＳｉ量增多,剩余非晶相的居里温度也升高．ＴＣ＝０．５２Ｔａ＋３６４．８,相关系数ｒ＝０．９８．用ＭＴＧＡ法测量αＦｅＳｉ或剩余非晶相的体积百分数随退火温度的变化     

Fe—（Cu—Nb）—Si—B纳米晶合金的磁致伸缩

采用适当的热处理工艺将不同成分的Ｆｅ－（Ｃｕ－Ｎｂ）－Ｓｉ－Ｂ非晶态合金制备成纳米晶合金，测试了纳米晶合金的磁致伸缩，并与相应成分的非晶合金做了比较，实验结果表明，纳米晶合金的饱和磁致伸缩均小于非晶合金，较小的磁致伸缩并不是产生优异软磁性能的主要原因。     

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.