亚磷酸三甲酯合成草甘膦工艺研究

本文对亚磷酸三甲酯法合成草甘膦工艺条件进行了探索。     

Synthesis and characterization of La doped M-type hexagonal barium ferrite fine powders

ＩＮＴＲＯＤＵＣＴＩＯＮＰｅｒｍａｎｅｎｔｂａｒｉｕｍｆｅｒｒｉｔｅｍａｔｅｒｉａｌｓａｒｅｗｉｄｅｌｙｕｓｅｄ .Ｒｅｃｅｎｔｌｙ ,ｐｅｏｐｌｅｈａｖｅｐａｉｄｍｏｒｅａｔｔｅｎｔｉｏｎｔｏｔｈｅｍｂｅｃａｕｓｅｔｈｅｙｃａｎａｌｓｏｂｅｕｓｅｄａｓｐｅｒｐｅｎｄｉｃｕｌａｒｍａｇｎｅｔｉｃｒｅｃｏｒｄｉｎｇｍｅｄｉａｗｉｔｈｈｉｇｈｄｅｎｓｉｔｙｉｎｎｅｗｍａｇｎｅｔｉｃｒｅｃｏｒｄｉｎｇｆｉｅｌｄ[1] ａｎｄｍａｔｅｒｉａｌｓａｃｔｉｎｇａｓｃｏｎｃｅａｌｍｅｎｔｉｎａｒｍｓｉｎｄｕｓｔｒｙ…     

Novel Assemblies of Organo-Soluble Aromatic Polyamides Containing Copper(II) Coordination Complex Units in the Main Chain

This research was primarily focused on investigating the possibility of the production of novel organo-soluble polyamides with coordination metal complex units in the main chain. Using a copper(II) coordination complex as a monomer, a novel Cu(II)-containing polyamide was synthesized by polycondensation with m-phenylenediamine. The obtained polyamide with Cu(II) ions in the main chain had an inherent viscosity of 0.20 dL/g, which indicated that it was a low molecular weight polymer. Then the p-phthalic acid monomer was introduced to the above synthesis system to create a Cu(II)-containing co-polyamide with a higher molecular weight. The subsequent addition of p-phthalic acid resulted in the formation of a series of co-polyamides with different contents of the Cu-complex in the main chain, which had higher inherent viscosity. The structures of the Cu(II)-containing polymers were characterized by ICP and ¹H-NMR. The prepared co-polyamides had increased solubility in organic solvents. It also revealed that the UV absorption properties of co-polyamides were enhanced significantly by the incorporation of Cu(II) ions into the polymer chain.     

均溪二级水电站水导轴承甩油原因分析及处理

均溪二级水电站在机组试运行过程中，1号、2号水轮机相继出现了转动油盆内甩油现象，使得水导瓦温持续上升，迫使机组退出运行。介绍转动油盆的结构特点，甩油情况，并通过分析、计算、试验等方法查明了甩油原因，并提出了此类问题的检查、处理的方法。图3幅。     

杭州城市平原区土体渗流破坏特征及分区

本文从岩土的物理力学性质、渗透性及潜水水位等方面,经过大量数据的统计分析,对杭州城市平原区30米以浅地层的潜水渗流破坏进行了岩性条件及水力条件的综合研究,根据不同破坏类型的临界水力比降值等条件对该区的潜水渗流破坏进行进一步的分区(高易发区、中等易发区、低易发区)。     

棉纺织厂设备维修方式的实践

分析了周期计划维修存在的问题，提出采用状态计划维修，并将状态计划维修分为日常点检、计划检修、定期修理、专项维修等项目，说明状态计划维修不仅可以节约用工、节约机物料消耗，而且提高了设备的运转率，并使产品质量稳中有升。     

印刷企业人才论

<正>探讨人才的话题虽然有些老套,但作为重要人力资源的人才却能左右企业的发展,人才话题常议常新。人才强国战略是中央的既定方针,在新形势下应该培养造就什么样的人才?     

An Alternative Method to Analyze Field Distribution in Curved Dielectric Waveguides

A simple and effective method is proposed to analyze the field distribution of a curved dielectric waveguide with rectangular cross-section. Numerical results are compared with the measured values. It is shown that the present approach is effective and reliable.