Finding high-impact interdisciplinary users based on friend discipline distribution in academic social networking sites

Scientometrics - Specialized academic social networking sites are gaining popularity in scientific communication. A huge volume of interdisciplinary information is generated when researchers from...     

微波合成无机纳米材料的研究进展

微波加热作为一种合成纳米材料的新方法，近年来得到飞速发展。介绍了微波加热原理，阐述了微波合成无机纳米材料的一些研究进展，主要是液相微波加热在制备金属氧化物和金属硫化物纳米材料以及微波烧结在合成陶瓷材料的应用，并对该领域未来作了一些展望。     

Study of Disk-Loaded Waveguide Filled with Plasma

Recently disk-loaded waveguide has been widely used in high-power traveling wave tubes (HPTWT). It has been shown in many experiments that the interaction efficiency and output power can be increased greatly by injecting plasma into the vacuum microwave device. Using field analysis, the dispersion characteristics and the interaction impedance of the disk-loaded waveguide filled with plasma are analyzed in a strong longitudinal magnetic field. In conclusion, the frequency of the TM₀₁ mode increases as the density of the plasma increases. It also can be found when the plasma density increases to a large scale, the TM₀₁ mode of the disk-loaded waveguide overlaps the TG mode, these two modes couple each other and form the new hybrid modes.     

筒体环缝数控MAG焊接自动机

研究开发的筒体数控MAG自动焊机适应于不同直径，长度和壁厚的筒体的焊接。可预置5种工件的焊接参数且在焊接过程中还可根据情况进行调节。该机适应于多层多道焊，既可以自动排列焊道也可以进行摆动焊接。     

城市环境的影响与作用

揭示了城市环境的基本性质的基本特征，研究了城市环境对人的心理影响和生理影响。指出城市环境建设不公要满足人的物质需要，还要满足人的精神需要。     

重力坝深(底)孔断面钢筋混凝土模型试验研究

文通过7个小尺寸和1个大尺寸的钢筋混凝土断面模型试验，研究重力坝深(底)孔在坝体自重和内水压力以及超内水压力作用下的结构特性和破坏规律。重点探讨混凝土和钢筋应力应变、混凝土开裂、裂缝宽度和裂缝扩展规律，为建立更为科学的孔口配筋理论提供依据。     

氧化锌压敏陶瓷烧结致密化过程的研究

本文研究了氧化锌压敏陶瓷的致密化过程，结果发现只有当烧结温度升高到一定值时，试样中的ＺｎＯ粉粒产生聚集，致密化过程才开始．致密化是瓷体获得稳定电性能的基础．低熔点添加剂Ｂ２Ｏ３可以降低致密化的起始温度，而致密化过程中的等温烧结对ＺｎＯ压敏陶瓷的最大密度几乎没有影响．     

新型浸出溶剂-异丙醇的优点及技术难题

众所周知,理想的浸出溶剂应具备以下几个条件:(1)不被政府或其他权威部门限制使用;(2)货源充足,价格便宜;(3)在室温或其他可接受的温度下对油脂溶解力强,而对非油物质则不溶或难溶;(4)容易汽化,比热小,汽化潜热小;(5)沸点适当,且为单一沸点或沸点范围(馏程)窄;(6)不与水互溶;(7)化学稳定性好,在生产循环中不发生化学变化,不腐蚀设备;(8)不易燃烧或爆炸,使用安全性好;(9)无毒、无害,不污染环境.     

Analysis for the double staggered ladder circuit

A new type of mm-wave slow wave system, double staggered ladder circuit is analyzed in this paper, by means of “average cavity field method” and three-dimensional finite element method. The influence of the electron beam channel on the dispersion characteristics is discussed. An experimental research is made, the experimental results agree well with the theoretical one.     

东海陆架盆地西湖凹陷油气发现历程回顾

东海陆架盆地的油气发现开始于1980年,并主要集中于西湖凹陷。从1980年至1995年是东海油气勘探成果辉煌的15年,期间共发现了平湖、春晓、天外天、宝云亭、武云亭、孔雀亭、断桥、残雪等8个油气田及一大批含油气构造。