现代城市"生态街道"设计初探

回顾了城市街道空间设计的演变历程 ,分析了城市“生态街道”的内涵 ,提出了建设现代城市“生态街道”的设计准则 ,指出城市街道的生态化设计是城市街道的发展方向     

微波介质谐振器介电参数的测量

本文讨论了微波介质谐振器介电参数测试技术。用研制的测试装置对多个介质样品进行了实测，结果表明，本文的分析与实际值是吻合的。该测试技术可对微波介质谐振器的复介电常数进行迅速、准确、可靠、宽频带、无损伤、自动化和批量检测，具有较强的实用性。     

地震复合波地质属性的研究方法

在地震资料解释中,地震复合波的地质属性问题一直没有得到很好地解决。本文针对松辽盆地砂泥岩薄互层的地质特点,提出了用波形合成追踪法研究地震复合波地质属性的方法。该方法在地震复合波正演合成过程中有五个可以识别的特征界面,其中 C 界面是地震复合波形成的主导界面;C 至 D 界面间的地层为形成地震复合波的主要地层。因此,找准 C 界面深度是建立地震复合波与钻孔地层间有机联系的关键,对地震地质层位准确标定和利用地震剖面复合波波形信息进行岩性预测极为重要。文中的应用实例表明,用该方法在松辽盆地较好地建立了地震信息与地质信息间的对应关系,解决了一些疑难地质问题,取得了较好的勘探效果。     

四维空间直线绕平面的旋转

本文对四维空间直线绕平面旋转的轨迹进行一投详尽的讨论，按照直线与“轴平面”的相对位置不同，该旋转轨迹分别为圆柱面、圆锥面和单叶回转双曲面，并认为这些回转曲面的轴线是过该直线的与“轴平面”垂直的超平面与“轴平面”的交线。     

用复合烷基锂引发丁二烯聚合

对以环己烷为溶剂、四氢呋喃为微观结构调节剂、复合烷基锂为引发剂的丁二烯聚合反应过程进行了研究，考察了不同引发温度、不同配比的复合烷基锂对聚合反应的影响，并与以正丁基锂为引发剂的丁二烯聚合反应过程进行了比较。     

对象管理

本文论述了面向对象数据库系统ＷＨＹＭＸ的对象管理机制，重点讨论了复杂对象的对象操作。     

Epoxidation of olefines with PDMS membranes containing zeolite occluded manganese diimine complexes

A new composite catalyst for selective epoxidation of olefins with tert-butyl hydroperoxide (tBHP) is reported. The catalyst contains manganese diimine complexes (cis-Mn bis-2,2′-Bipyridyl), occluded within a NaY zeolite, in turn incorporated in a polydimethylsiloxane membrane (cis-[Mn(bpy)₂]²⁺-NaY-PDMS). The three-step synthesis consists of a Mn²⁺exchange of NaY, ligand sorption to form cis-[Mn(bpy)₂]²⁺-NaY and incorporation of the latter in a PDMS membrane. The major differences between [Mn(bpy)₂]²⁺-NaY as such and occluded in PDMS are observed in the sorption and catalytic characteristics. With the membrane system, the use of a solvent becomes obsolete. Whereas optimal cyclohexene oxidation with [Mn(bpy)₂]²⁺-NaY occurs with hydrogen peroxide in acetone, tBuOOH proves to be a better oxidant for [Mn(bpy)₂]²⁺-NaY-PDMS. The reactions in batch and fed-batch reactors are discussed. A simple regeneration procedure, monitored by FT-IR spectroscopy is proposed.     

“镍”催化酰氯和有机锡试剂交叉偶联反应的研究

镍络合物催化酰氯与有机锡试剂交叉偶联合成有机酮的反应,其反应选择性强,反应彻底,转化率高,工艺简单。在有机锡过量的情况下,对不同催化剂的催化活性和包括投料比,反应温度,反应时间,反应溶剂等反应条件进行了考察。     

稀土硝酸盐与邻香草醛缩邻氨基苯甲酸配合物的合成与表征

由邻香草醛缩邻氨基苯甲酸（以Ｈ２Ｌ表示）与稀土硝酸盐作用合成了３种新固体配合物。并对合成的配合物进行了元素分析、红外光谱、紫外光谱、差热—热重及摩尔电导分析，确定配合物的组成为〔Ｌｎ（ＨＬ）（ＮＯ３）（Ｈ２Ｏ）〕ＮＯ３（Ｌｎ＝Ｄｙ，Ｅｒ，Ｔｍ）。研究了配合物的配位方式和某些物理化学性质。     

Synthesis and characterization of chitosan/poly(acrylic acid) polyelectrolyte complex

Polyelectrolyte complex based on chitosan and acrylic acid monomer by photoinitiated free‐radical polymerization in the absence of crosslinker showed a large transition in swelling in response to changes in pH of surrounding medium. Their ability to swell arises from polyelectrolyte interactions and molecular structure of the complex. The main properties of interest that related to the molecular structure, swelling volumes, glass transition temperature, and elastic modulus of the complex were investigated. The effect of water content, the only variable in the sample component, played an important role in molecular structure of the complex and as a consequence, the extent of intermolecular linkage, especially amide bonds which in turn governed the degree of swelling of the polyelectrolyte complex in this study. The decreased degree of swelling and higher temperature shift of glass transition temperature was found with increased water content, whereas increased modulus of elasticity of dry complex was found in lower water content of synthesis component. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1025–1035, 2002