岩石光谱在遥感解译中的应用

为配合地质解译，提供地面遥感图象、航空遥感图象信息来源和影象特征，对位于河北省阳原县石匣里Ⅰ坝址地段的几类主要岩石进行了光谱测定，重点研究了光谱信息特征与岩石成分、结构和构造间的相互关系，为库坝地区的遥感地质解译确立了典型的地质解译标志。1坝址地质概况石匣     

应变In0.20 Ga0.80As／GaAs单量子阱结构的光谱研究

报道了用光致发光光谱，吸收光谱和光电流谱研究具有相同组伊阱宽，不同覆盖层厚度的应变Ｉｎ０．２０Ｇａ０．８０Ａｓ／ＧａＡｓ单量子阱结构的实验结果，结果理论计算，观察到ＧａＡｓ覆盖层厚度对单量子阱结构的材料质量，应力驰豫和发光淬灭机制的影响，确定了各样品应变值和导带不连续因子Ｑｃ，并讨论了这种结构发光机制。     

加气混凝土切割机的特性与选用

文章分析了我国目前生产加气混凝土制品的各种切割工艺及采用的切割设备--地翻型切割机、空中翻转型切割机、长杆式切割机、预铺式切割机、压入式切割机、栅条式切割机(JQS)钢带式切割机的工艺特点.介绍了选用这些切割机应注意的问题,指出必须结合实际的生产工艺、产品要求及场地特点、投资大小合理选择切割机.     

Structural Description of Polyaromatic Nucleus in Residue

The proton nuclear magnetic resonance spectroscopy （1H-NMR）, the synchronous fluorescence spectrometry （SFS） and the ruthenium ions catalyzed oxidation （RICO） method were used to determine the chemical structure of polyaromatic nucleus in Oman residue fractions. The results of 1H-NMR analyses showed that the average numbers of aromatic rings in the aromatics, resins and asphaltenes units were 3.2, 5.6 and 8.2, respectively. SFS was used to investigate the distribution of aromatic rings in residue fractions, the main distribution range of aromatic rings in aromatics, resins and asphaltenes were 3 4 rings, 3--5 rings and more than 5 rings, respectively. The aromatic network in residue fractions was oxidized to produce numerous carboxylic acids. The types and content of benzenepolycarboxylic acids, such as phthalic acid, benzenetricarboxylic acids, benzenetetracarboxylic acids, benzenepentacarboxylic acid and benzenehexacarboxylic acid disclosed the condensed types of aromatic nuclei in the core. The biphenyl fraction （BIPH）, the cata-condensed fraction （CATA）, the peri-condensed fraction （PERI） and the condensed index （BCI） were calculated based on the benzenepolycarboxylic acids formed. The results implied that there was less biphenyl type structures in all residue fractions. The aromatics fraction was almost composed of the cata-condensed type system, and the asphaltenes fraction was wholly composed of the peri-condensed type system, while in the resins fraction co-existed the two types, herein the peri-con- densed type was predominant over the cata-condensed type. Based on the analytical results obtained in the study, the components --aromatics, resins and asphaltenes -- were given the likely structural models.     

水下高围压磨料射流装置及冲蚀性能的研究

提出了水下高围压磨料射流切割模拟试验装置并对其进行了试验，得到了冲蚀深度与靶距，模拟水深，射流管长度及冲蚀时间的关系。同时对空气中磨料射流与纯水射流的冲蚀性能也进行了比较，本文较全面地揭示了水下磨料射流的冲蚀性能，为实际应用提供了必要的依据。     

新型涂料增稠剂的化学成分鉴定

本文用红外光谱法对一种新型涂料增稠剂进行了化学成分鉴定,其主要成分为羟丙基甲基纤维素与蒙脱土。     

飞秒级超短脉冲激光束整形技术获突破

美国普度大学的工程专家近日在《自然光子学》网络版上宣称．他们可以对超短光脉冲的光谱性质进行精细调控，从而为制造更先进的传感器和更精密的实验室仪器、研发更高效的通讯技术奠定基础。     

135MW机组自动主汽门异常关闭的原因分析

针对华电新疆哈密发电有限责任公司#5机组高压油泵运行切换为主油泵运行的过程中,经常出现自动主汽门异常关闭的现象进行分析,最终通过对高压油泵的叶轮连行改造,消案了这一缺陷。使机组的安全性得以提高。其整个分析、处理过程对泵类扬程和出力的改造也有一定的借鉴意义。