A3钢的氧浓差宏电池腐蚀作用的研究

模拟埋地钢管上可能形成的宏电池现象，在实验室以３．５％ＮａＣｌ溶液和自制装置研究了Ｏ２／Ｎ２、Ｏ２／空气和Ｎ２／空气３种金属的腐蚀强度变化。分别测定了ｉｇ～ｔ行为及阳极金属的失重腐蚀速度；提出了宏电池效应系数（ｒ＝ｉａ＾Ａ／ｉＫ＾Ａ），并用来表征宏电池实际作用强度证明其相关性良好。结果表明，３种宏电池的作用规律，且随氧浓差异增大，宏电池效应系数也增大，这时宏电池中阳极金属的腐蚀显加速。     

脉冲电晕放电脱硝中N_2O生成的研究

脉冲电晕放电是一种能同时脱除烟气中ＳＯ２，ＮＯｘ和飞灰颗粒的新方法。然而在一个电晕放电试验装置上的试验首次发现，在脱除ＮＯｘ的同时产生了一定量的Ｎ＿Ｏ，而且随着电压和停留时间及ＮＯｘ初始浓度的增大，Ｎ＿２Ｏ量也增大。试验还发现，电晕放电对Ｎ＿２Ｏ无分解作用，空气中的氮气在电晕中不生成Ｎ２Ｏ，脱硫及喷氮脱硫不生成Ｎ２Ｏ，ＳＯ２和ＮＨ３对Ｎ＿２Ｏ的生成无影响。讨论了脉冲电晕放电脱硝中Ｎ２Ｏ生成的机理。     

脉冲电晕放电脱硝中N2O生成的研究

脉冲电晕放电是一种能同时脱除烟气中ＳＯ２，ＮＯｘ和飞灰颗粒的新方法，然而在一个电晕放电试验装置上的试验首次发现，在脱除ＮＯｘ的同时产生了一定量的Ｎ２Ｏ，而且随着电压和停留时间及ＮＯｘ初始浓度的增大，Ｎ２Ｏ量也增大。试验还发现，电晕放电对Ｎ２Ｏ无分解作用，空气中的氮气在电晕中不生成Ｎ２Ｏ，脱硫及喷氨脱硫不生成Ｎ２Ｏ，ＳＯ２和ＮＨ３对Ｎ２Ｏ的生成元影响。讨论了脉冲电晕放电脱硝中Ｎ２Ｏ生成的机理。     

金属－金属相互作用对Rh＿2Co＿2／Al＿2O＿3催化剂吸附性能的影响

用ＣＯ和ＮＯ双分子探针－ＩＲ技术研究了双金属Ｒｈ－Ｃｏ／Ａｌ＿２Ｏ＿３催化剂的Ｒｈ－Ｃｏ相互作用对其吸附性能的影响。结果表明，由Ｒｈ＿２ＣＯ＿２（ＣＯ）＿（１２）簇合物制得的Ｒｈ＿２ＣＯ＿２／Ａｌ＿２Ｏ＿３中的Ｒｈ－Ｃｏ相互作用强，使其在６７３ＫＨ＿２还原后产生一种新的线式ＣＯ吸附的Ｃｏ中心。此Ｃｏ中心对ＣＯ和ＮＯ的吸附性能不同于Ｃｏ＿２／Ａｌ＿２Ｏ＿３（由Ｃｏ＿２（ＣＯ）＿８制得）上的Ｃｏ中心。由金属盐共浸制得的（Ｒｈ＋Ｃｏ）／Ａｌ＿２Ｏ＿３中的Ｒｈ－Ｃｏ相互作用弱，Ｃｏ中心对ＣＯ和ＮＯ的吸附性能与单金属Ｃｏ＿２／Ａｌ＿２Ｏ＿３相同。Ｒｎ＿４／Ａｌ＿２Ｏ＿３（由Ｒｈ＿４（ＣＯ）＿（１２）制得）上３种ＣＯ吸附的Ｒｈ中心对ＣＯ和ＮＯ的吸附能力也存在明显差异：在孪生ＣＯ吸附的Ｒｈ中心上，ＣＯ强于ＮＯ；在线式ＣＯ吸附的Ｒｈ中心上，ＣＯ与ＮＯ相近；在桥式ＣＯ吸附的Ｒｈ中心上，ＣＯ弱于ＮＯ。ＣＯ在Ｃｏ＿２／Ａｌ＿２Ｏ＿３上不产生分子吸附态。     

盐、碱胁迫对羊草体内N及几种有机代谢产物积累的影响

用０～７００ｍｍｏｌ／ＬＮａＣＬ和０～１５０ｍｍｏｌ／ＬＮａ２ＣＯ３对羊草（Ａｎｅｕｒｏｌｅｐｉｄｉｕｍ ｃｈｉｎｅｎｓｅ（Ｔｒｉｎ）Ｋｉｔａｇ。）苗进行胁迫处理，测定其Ｎ及几种有机渗透调节物的积累情况。结果表明：羊草对两种盐胁迫的反应明显不同。对于ＮａＣＬ，可耐受的最大强度为６００ｍｍｏｌ／Ｌ；对于Ｎａ２ＣＯ３，可耐受的最大强度为１２５ｍｍｏｌ／Ｌ。相同Ｎａ＾＋胁强下，Ｎａ２ＣＯ３胁迫使羊草苗体     

加压三相床环氧乙烷合成过程研究 Ⅱ.O_2、CO_2、C_2H_4和N_2在高沸点溶剂中溶解度的测定

使用高压搅拌釜,在６０～２３０°Ｃ、０．１５～１．３ＭＰａ条件下测定了文题的反应及惰性组分Ｏ２、Ｃ２Ｈ４、ＣＯ２和Ｎ２在高沸点溶剂中的溶解度,采用０．１５级精密压力变送器,根据高压釜中各纯气体溶解前后压力的变化值计算出该温度及压力下的溶解度。发现,Ｏ２、Ｃ２Ｈ４、ＣＯ２和Ｎ２的平衡溶解度都随压力增加而增大;Ｏ２、Ｃ２Ｈ４和ＣＯ２的平衡溶解度随温度升高而降低,Ｎ２的平衡溶解度随温度升高而增大。回归出各气体的溶解度系数Ｈｉ与温度ｔ的关联方程。     

土壤中宏电池对X70钢腐蚀作用的研究

摘要：利用失重法、电化学阻抗测试技术等方法,研究了X70钢在土壤中的宏电池腐蚀行为。试验结果表明,宏电池粘土中 阳极的腐蚀速率为自然腐蚀速率的307倍。在宏电池阴阳极面积比15∶1情况下,粘土中宏电池阳极的腐蚀速率为阴阳极面积比1∶1时的210倍。随着实验时间的增加,粘土中X70钢自然腐蚀速率逐渐减 小,而宏电池阳极的腐蚀速率一直保持着相当高的腐蚀速率。     

盒式叶绿素电池光电化学性质的研究

用叶绿素ａ（ｃｈｌａ）做成盒式叶绿素电池：ＳｎＯ２／ｃｈｌａ／Ｈ２Ｏ／ＳｎＯ２与ＳｎＯ２／ｃｈｌａ／Ｈ２Ｏ／Ｚｎ。测量了它们的光电化学性质、特性参数和电压，电流的输出特性，在电池中加入氢醌等物质对电池进行改进，结果表明，叶绿素电池的构成对其光电化学性质有很大影响。     

无溶剂存在下微波照射的苯并三唑N-烷基化反应

报道了无溶剂存在下微波照射的１，２，３－苯并三唑Ｎ－烷基化反应，将１，２，３－苯并三唑和烷基化剂（卤代烷）吸附在固体ＫＦ／Ａｌ２Ｏ３上，用强度适当的微波照射２～３ｍｉｎ，得到相应的Ｎ－烷基化产物．     

新型抗癌配合物的研究 IV：[Pd（二齿胺）（NO3）2]配合物的合成,表…

合成了二齿胺配体内消旋－１，２－二苯基乙二胺（Ｓｔｅｉｎ）内消旋－１，２－二对氯苯基乙二胺（４－Ｃｌ－ｓｔ）和钯配合物［Ｐｄ（ｓｔｅｉｎ）（ＮＯ３）２，［Ｐｄ（４－Ｃｌ－ｓｔ）（ＮＯ３）２，［Ｐｄ（ｔｍｃｐｄａ）（ＮＯ３）２］，［Ｐｄ（Ｏ－ｐｈｅｎ）（ＮＯ３）２］，用元素分析红外光谱进行了表征，并用ＭＴＴ染色法测定了配合物的抗癌活性，结果表明［Ｐｄ（４－Ｃｌ－ｓｔ）（ＮＯ３０２］对人体宫颈癌和鼻咽     

可编程逻辑器件的应用

从3个方面讨论了可编程器件的应用．首先，使用了一个串入并出移位寄存器“74164”宏单元，将一路数据流分成两路．这种方法实际用了MAX PLUSⅡ软件提供的移位寄存器宏单元，使用起来简单、方便．第2种设计方法的特点是针对FLEX系列器件结构在查找表结构的基础上，对工作速度和占芯片面积进行优化．第3种方法是用VHDL语言编制一个4位二进制同步计数器，用语言描述的特点是描述能力强，覆盖面广，抽象能力强．     

宏小区高天线环境下波达角度和时间的预测

为提高对空时到达分布预测的准确度,介绍了一种适用于小区高天线环境下波达角度和时间预测、的改进的圆散射模型。分别给出了波达角度和时间分布概率密度函数的表达式。仿真结果与实测数据的比较表明,较传统的基于散射体的单反宏小区模型而言,改进的圆模型能更合理地对传播建模,且在波达角度和时间的预测方面具有更高的准确度。     

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.     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that