环保型磷酸酯型水基防锈剂的研制

以丙烯酸、5-甲基-2-巯基噻二唑、二乙醇胺和五氧化二磷为原料,合成了一种新型的绿色环保型水基防锈剂。确定了最佳合成条件并用显微熔点测定仪对中间体的熔点进行了测试。采用失重法对合成的化合物的防锈性能进行测试。测试结果表明:在1 mol/L HCl溶液中目标化合物对A3钢有较好的缓蚀性能,其最佳浓度均为20×10-6(ppm)。且产品水溶性好,抗硬水、耐水解能力强,适用于水基金属防锈液等水基型体系。     

基于噻二唑型水基润滑油防锈剂的合成,表征和应用

以顺丁烯二酸酐、5-甲基-2-巯基噻二唑、二乙醇胺为原料,经加成与酰胺化两步反应,合成了新型的绿色环保型水基防锈剂。在浓H2SO4和二甲苯作用下,控制两步反应温度分别为50-55℃和115-120℃,n(顺丁烯二酸酐):n(5-甲基-2-巯基噻二唑)∶n(二乙醇胺)=1∶1.1∶1.1,产物收率达59%。产品水溶性好,抗硬水、耐水解能力强,在pH值5～10水溶液均能稳定存在,在水中对铁等金属有优良的防锈性能,适用于水基金属防锈液等水基型体系。     

防锈油膜不均匀性与防护性能的关系

采用丝束电极研究了防锈油膜电化学不均匀性与其防护性能的关系，研究表明，防锈油膜的电化学不均匀性对其防护性能有一定影响，而防锈油膜的阳极直流电阻直接反映了油膜的防护性能，并且与显色试验结果有很好的对应性。     

用丝束电极研究NaNO2对钢铁防护性能的影响

采用丝束电极多电极电化学法研究钢铁在不同浓度的NaCl溶液中的电位变化，并分析NaN02的加入对体系电位的影响和NaN02对钢铁的防护作用。研究结果表明：钢铁在NaCl溶液中的电位分布在一定的电位区间，各丝电极的电位存在差异，各区域金属的腐蚀不均匀；随着溶液中NaCl含量从1％增大至5％，丝束电极的电极电位平均值从—0．43V变为-0．54v，电极电位负移，金属腐蚀倾向增大：由于NaNO2和钢铁电极表面的腐蚀产物Fe^2＋的相互作用并生成保护性的薄膜，在NaCl溶液中加入NaNO2将使体系电极电位明显正移：加入NaNO2后各丝电极电位的分布是随机的、不均匀的，且电位分布区间增大，表明所形成的保护性薄膜不均匀。     

汽车传感器电极浆料制备及相关特性研究

多孔Pt/YSZ(YSZ,氧化钇稳定的氧化锆)电极中Pt的含量对电阻膜层性能起决定作用.以0.1 μm、 0.5 μm Pt粉和YSZ为原料并控制其质量比,制备电极浆料并烧结成电极膜层;测其电阻及表面形貌.实验证明：多孔Pt/YSZ电极中,Pt颗粒越细,电极膜层电阻越小,电极性能也越稳定;当Pt/YSZ的质量比达到最佳比例时,电极电阻较小,且Pt/空气/YSZ三相边界面积达到最大,电极催化活性最好.     

一种脉冲电阻分压器的性能分析

针对脉冲电阻分压器的响应性能,建立了分压器的分布参数模型.理论与仿真结果表明:影响分压器性能的主要因素有总阻值、第一级高压臂电阻长度及直径和屏蔽罩内径;分压器总阻值越小,第一级高压臂电阻的长度越短且直径越小,屏蔽罩内径越大,分压器的响应时间越短;增加屏蔽外罩可以减少电磁干扰对电阻分压器的影响.电流探头测试结果证实,脉冲电阻分压器可用于纳秒级脉冲的测量.     

Pb-Sn-Al复合电极的制备及其性能初步研究

 通过在Pb与Al合金之间引入过渡金属Sn,采用热镀膜及热包覆的方法制备出了Pb-Sn-Al层状复合电极材料,对其电阻分布、质量、电极极化曲线、耐蚀性、槽电压等进行了测试分析,结果表明:与传统Pb合金电极相比,其电阻减少24%,质量减小37.6%,电极极化电位降低2.3%,腐蚀损耗降低23.2%,槽电压降低200mV.因此Pb-Sn-Al层状复合电极材料是一种质量小、导电好、耐腐蚀的电极材料,有着重要的开发应用前景.     

水基合成切削液的研制

以低粘度润滑剂和自来水为基本原料,添加防锈剂、极压剂、消泡剂等表面活性剂,研制了一种水基合成切削液.研制出的水基合成切削液稀释后适用于黑色等多种金属的切削、研磨等.具有良好的防锈、防腐、抗硬水稳定性能,且无毒无味、对皮肤无刺激.经试验及生产使用后,证明这种多功能切削液效果良好.     

高效金属防锈剂

成果简介 该金属防锈剂为水基均匀液体,缓蚀剂为有机体系,无毒,无味,使用安全,可广泛用于金属机械的加工、储运、维修、保养等行业;除具良好的防锈性能外,还具优异的沉降性与润滑性。因而可用作金属加工过程中的防锈磨削液,防锈清洁剂能全部分解掉,不会因累积结焦而损害设备。     

环氧磷酸乳液的性能及其应用

采用快速固化成膜的方法, 对环氧磷酸乳液的性能与应用进行了研究. 结果表明： 在反应温度为60～80 ℃时, 环氧树脂和端氨基聚醚的反应产物--环氧乳液可以稳定分散于防锈液中, 形成环氧磷酸乳液;此乳液稳定存在于pH＜1的环境中, 可用于除锈, 且能和异氰酸酯类固化剂固化成膜, 覆盖在除锈后的钢铁表面, 形成既能防锈又能防水的耐腐蚀膜层, 防锈膜层无色透明.     

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.