甲酸甲酯分解制高纯一氧化碳催化剂的理论设计

从反应机理，几何构型，化学性质有活性模型四个方面对甲酸甲酯分解生成一氧化碳和甲醇的催化剂进行了理论设计，结果表明，最有希望的活性组分有ＭｇＯ，ＣａＯ，ＺｎＯ，Ｃｕ，ＴｉＯ２，ＺｒＯ２及ＭｎＯ。较有希望的载体有γ－Ａｌ２Ｏ３。     

Cu—Mn—Pt／γ—Al2O3系列催化剂中组分间的活性增强效应

通过ＣＯ氧化活性测试，采用ＸＲＤ、ＸＰＳ、ＴＰＲ等方法表征，研究了Ｃｕ－Ｍｎ－Ｐｔ／γ－Ａｌ２Ｏ３系列催化剂中组分间的活性增强效应，并对其固相结构和表面组成进行表征．结果表明：（１）氧化型ＣｕＭｎ／γ－Ａｌ２Ｏ３催化剂中Ｃｕ和Ｍｎ之间存在一定的活性增强效应，两种活性组分发生协同作用；（２）还原型Ｐｔ－Ｃｕ／γ－Ａｌ２Ｏ３和Ｐｔ－Ｍｎ／γ－Ａｌ２Ｏ３催化剂的氧化活性在系列中最高，Ｐｔ－Ｍｎ／γ－Ａｌ２Ｏ３的ＣＯ氧化活性增强效应最为显著．这与加人Ｐｔ后，Ｃｕ２＋易被还原，Ｃｕ＋明显增多有关；（３）同时含有Ｃｕ、Ｍｎ组分的几种催化剂中，催化剂表面上Ｃｕ均有一定富集，加人Ｐｔ后，表相以Ｃｕ＋为主．由于Ｃｕ－Ｍｎ－Ｐｔ三元催化剂的制备方法不同，以致氧化活性相差很大，共浸制备较分浸制备的催化剂活性要好的多．     

STUDEIS ON THE CMD OBTAINED FROM OXIDIZING MnO 2 BY KClO 3

为了弥补干电池材料电解ＭｎＯ２（简称ＥＭＤ）的某些性能上的不足，以期用化学ＭｎＯ２（简称ＣＭＤ）替代．在一定条件下，以氯酸钾氧化Ｍｎ２＋沉积法制化学ＭｎＯ２，对其进行ＭｎＯ２含量、肼脂数、磁化率、放电性能以及红外与差热等分析．结果表明，制得的ＣＭＤ电化活性较高，有望替代电解ＭｎＯ２作为干电池的阴极活性材料     

LaMO3（M=Fe,Co,Ni）氧吸附性能与CO氧化催化活性

以ＸＰＳ表征了ＬａＭＯ３（Ｍ＝Ｆｅ，Ｃｏ，Ｎｉ）晶体表面氧的性质，区分了ＸＰＳ谱中二种Ｏ１ｓ峰．由Ｏ吸峰的相对强度获得了ＬａＭＯ３表面吸附Ｏ２性能的变化规律，并得到了Ｏ２吸附量（脉冲法）实验结果的映证．ＣＯ氧化反应活性测定发现：３００℃下，ＬａＭＯ３活性顺序为ＬａＣｏＯ３＞ＬａＮｉＯ３＞ＬａＦｅＯ３，与其Ｏ２吸附量大小顺序相一致．     

甲苯—丙烯烷基化合成异丙基甲苯新型催化剂的研究

本文考察了用ＭｇＯ、ＣａＯ、ＮｉＯ、ＴｉＯ２、Ｆｅ２Ｏ３、Ｐ２Ｏ５、ＳｉＯ２、Ｆ和Ｌａ２Ｏ３改性的ＨＭ分子筛对甲苯－丙烯烷基化性能的影响．结果表明：ＭｇＯ、ＣａＯ改性导致活性和异丙基甲苯选择性降低;ＮｉＯ、ＴｉＯ２、Ｆｅ２Ｏ３改性主要影响选择性;ＳｉＯ２、Ｌａ２Ｏ３改性在含量较低时基本不影响活性和选择性,含量高时活性降低,邻异丙基甲苯选择性增加．影响活性和选择性的主要因素可能是分子筛的骨架硅铝比和钠含量．     

四苯基卟啉钆与DMSO反应的可见光谱研究

研究了四苯基卟啉钆配合物在ＣＨ２Ｃｌ２，ＤＭＳＯ及混合溶剂ＤＭＳＯＣＨ２Ｃｌ２，ＤＭＳＯＨ２Ｏ中的可见光谱．测定了在ＣＨ２Ｃｌ２溶剂中配合物与ＤＭＳＯ反应的平衡常数及配比     

含铅的多元氢阴极电催化性能的研究

用电沉积法制备Ｍｏ－Ｗ－Ｎｉ－Ｐｂ－Ｃａ多元活性阴极，研究了在０．５ｍｏｌ／Ｌ Ｈ２ＳＯ４中的析氢反应，结果表明，多元阴极具有较高的电催化活性，其析氢过电位比软钢阴极降低３０５ｍＶ，ｉ０提高三个数量级，且有较好的稳定性，并用光电子能谱研究了表面组成和结构。证实表面有：Ｎｉ，ＮｉＯ，ＭｏＯ２，ＭｏＯ＾２－４，ＷＯ３，ＰｂＯ２，ＰｂＯ，Ｃａ＾＋＋等物质。     

载体的酸碱特性对Ni－Cu催化剂上CO加氢性能的影响

本文采用ＸＲＤ，ＴＰＲ和以Ｈ２，ＣＯ为探针分子的ＴＰＤ—ＭＳ，ＴＰＳＲ－ＭＳ技术研究了Ｎｉ－ＣＵ合金负载于氧化物ＳｉＯ２，ＭｇＯ和γ－Ａｌ２Ｏ３上的性质变化，以及对ＣＯ加氢反应性能的影响。实验结果表明，各种载体对于负载于其上的活性组分均具有良好的分散性能；ＳｉＯ２对金属相的结构和电子状态不产生影响，而γ－Ａｌ２Ｏ３和ＭｇＯ对金属相则有不同程度的影响，这种相互作用主要表现在活性组分对Ｈ２和ＣＯ吸附能力的变化和ＣＯ加氢的活性和选择性的变化上。     

氧化铈对Cu－Mn－O燃烧催化剂氧化还原性能的影响

利用微反－色谱技术考察了Ｃｕ－Ｍｎ－Ｏ及Ｃｕ－Ｍｎ－Ｃｅ－Ｏ催化剂的甲苯完全燃烧活性；通过改变氧的浓度，研究了ＣｅＯ＿２对Ｃｕ－Ｍｎ－Ｏ催化剂性能的影响；用ＴＰＲ、ＴＰＯＴ和氢氧滴定法测定了催化剂的表面性能。结果表明，ＣｅＯ＿２能够增加催化剂表面的贮氧量，提高吸氧能力，改进供氧性能，进而提高Ｃｕ－Ｍｎ－Ｏ催化剂在低氧比时的无化活性，也能使还原后的Ｃｕ－Ｍｎ－Ｏ催化剂具有良好的再生氧化活性。     

高柠檬酸盐对固氮酶铁钼辅基重组活性的影响

用高柠檬酸铁、柠檬酸钠、ＡＴＰ和Ｎａ２ＭｏＯ４分别处理ＦｅＭｏｃｏ，然后与ＵＷ４５组份Ⅰ蛋白进行重组，结果发现，高柠檬铁和柠檬酸钠分别使ＦｅＭｏｃｏ重组体的Ｃ２Ｈ２还原活性提高６７％和５４％，Ｎ２还原活性分别提高１７０％和１３５％．ＦｅＭｏｃｏ与ＡＴＰ预作用后再分别与高柠檬酸铁、柠檬酸钠作用，其重组体的Ｃ２Ｈ２还原活性分别提高１２１％和１１９％，而Ｎ２还原活性分别提高３０３％和１３５％．而ＦｅＭｏｃｏ，ＦｅＭｏｃｏ－高柠檬酸铁体系及ＦｅＭｏｃｏ－ＡＴＰ－高柠檬酸铁体系与Ｎａ２ＭｏＯ４作用后，重组体的Ｃ２Ｈ２还原活性分别下降５％，１２％及２１％．ＦｅＭｏｃｏ－高柠檬酸铁体系在１４．６Ｋ下的ＥＰＲ谱，与单独ＦｅＭｏｃｏ的略有不同，而ＦｅＭｏｃｏ－ＡＴＰ－高柠檬酸铁体系的ＥＰＲ谱则与前者有明显的差异．研究结果表明，高柠檬酸可能是ＦｅＭｏｃｏ的有机组份，它可能结合在ＦｅＭｏｃｏ的Ｍｏ原子上，而这种结合是比较松散的．     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.