巴蜀人家

建筑面积:2600平方米施工地点:天津市开发区主要材料:陶砖、彩色涂料、仿古地砖、 民俗图片、柚木板、乳胶漆设计单位:西安大彩设计研究所施工单位:西安大彩设计工程有限责任公司设计人:余平     

双进双出钢球磨煤机的特性与故障处理

介绍双进双出钢球磨煤机双进双出、料位控制、辅助风系统和蒸汽惰性置换系统的特点，重点分析小齿轮断齿、大小齿轮齿面磨损点蚀严重、螺旋输煤绞笼损坏、磨煤机大瓦温度高、料位系统异常等常见故障及发生的原因，并提出相应设备和系统的改进措施。     

中国古代金的分析技术

归纳总结了中国古代金分析技术的主要成果和与其相关的重要事件，对于认识金的分析技术的起源有一定的参考意义。     

Fabrication of Ormocer Containing Eu3＋ Ion and Their Optical Spectra

Eu3 ions were incorporated in sol and gel by a sol-gel processing using 3-glycidoxypropyltrimethoxysilane(CH2OCHCH2O(CH2)3Si(OCH3)3, GPTMS) and ethyl silicate (TEOS) as precursors. The basic chemical-physical properties such as DTA curve, FF-IR spectra and specific surface area were recorded. The characteristics of their optical spectra were measured and investigated. The results indicate that the emission intensity of Eu3 ion in ormocer is much higher and the global line width is wider than those in SiO2 gel. The relationship between the composition and structure of gels and the fluorescence intensity and width were discussed. The obtained ormocer shows good mechanical strength, which can be cut and polished in machine without broken.     

采购情报

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