变差函数及其在多波段机载成像光谱仪数据处理中的应用

遥感的空间信息反映一定范围内象元在空间上的关系，对成像光谱仪遥感数据而言，空间结构变代表一个局部区域中各象元之间光谱辐射能量的关联状态，在图像上反映为灰度变化，利用空间信息来开拓图像分析技术可获得遥感目标很高的正确识别率，变差函数是联系遥感目标和图像中空间变化特征的有用工具，实验变差函数的计算结果表明遥感目标种类与变差图之间的定量化空间关系，可以在成像光谱图像处理中发挥作用。     

能谱仪(EDS)测试结果中元素含量异常的研究

在EDS定量分析中,有时会见到某些元素(Si、Fe、Al、Cr等)含量的异常现象。能谱仪的测试研究表明,引起异常的主要因素有:标样选用不当,磨料污染,试样中的包体,矿物天然表面吸着的Si、Fe胶态薄膜,被测矿物周围邻接物质成分的影响,被测物质厚度过小或样品表面的复盖物等;对不同因素的影响效果可采取相应的对策给予减小或消除。     

The OH Maser Line Receiving System for the Urumqi 25m Radio Telescope

A maser spectral line system is newly implemented on the Urumqi 25m Radio Telescope. The system consists mainly of a cooling receiver and a 4096 channels digital correlation spectrometer. The frequency resolution of the spectrometer at the maximum signal bandwidth of 80MHz is 19.5kHz. After careful calibrations observation at the 1665 MHz OH maser emission was made towards a number of sources, including W49N and W75N. The observed results demonstrate that the digital correlation spectrometer is suitable for astronomical spectral line observations.     

星载雷达波谱仪反演海浪谱的精度研究

介绍了星载雷达波谱仪的观测原理及误差分析模型,并在Hauser等提出的SWI M(sea wave investigation and monitoring by satellite)的基础上分析了波谱仪反演海浪谱的波长分辨率和角度分辨率。为了减小反演调制谱的波动,在数据处理过程中时域和波数域相邻单元的平均个数分别为10和8个。系统在不同的模式下工作,为了获取20°的角度分辨率,对调制谱平均次数分别取3次(模式1)、7次(模式2)、10次(模式3)。使用解析法和仿真法分析了SWI M工作在模式2时海浪谱观测的能量误差,两种方法的结果一致。对于给定的海浪条件,能量误差小于20%。     

SZ36-1油田污水悬浮物无机组分研究

综合利用扫描电镜能谱分析、X-射线衍射仪等先进仪器对SZ36-1油田滤膜组分燃烧前后进行综合分析研究。通过分析无机组分中Fe、Ca等元素的变化规律,并结合现场水质监测数据,研究发现SZ36-1油田回注污水由CEP向AJ、平台输送过程中水质逐级恶化;同时污水由CEP到A平台再到J平台过程中,Fe原子百分比平均值依次为4.45%、13.03%、19.45%,Ca原子百分比平均值依次为4.33%、5.43%、5.66%。腐蚀、结垢现象逐渐加剧,是导致注水水质恶化的主要原因。     

AFS-2202E型原子荧光光度计故障诊断方法

比较全面地分析了AFS-2202E型原子荧光光度计的故障现象及产生原因。从仪器灵敏度下降、空白值升高等光路故障,通信失败及气路自检、空心阴极灯供电、负高压电路、光电倍增管及检测电路等方面故障检修,进样及原子化系统等故障检修方面,归纳出仪器故障的排除方法。     

内蒙古柳坝沟金矿床流体包裹体研究

对柳坝沟金矿床的包裹体进行系统的岩相学、显微测温和激光拉曼光谱研究,结果表明:包裹体的主要类型有富液包裹体、富气包裹体、CO2-H2O和含子矿物多相包裹体。流体包裹体液相成分为水,气相成分主要为CO2及H2O,并含有少量或微量的N2、H2S、CH4等挥发份。成矿流体属中高温、中低盐度、中等密度的NaCl-H2O-CO2体系。矿床形成于中深成矿环境。矿床的成矿作用是一个温度退缩和盐度降低的过程,成矿过程中发生过多次流体沸腾作用,流体的沸腾和CO2流体在Au成矿过程中发挥着重要作用。     

Chang’E-1 gamma ray spectrometer and preliminary radioactive results on the lunar surface

The Chang’E-1(CE-1) spacecraft took a gamma-ray spectrometer (hereafter, CGRS) to detect the element distributions on the lunar surface in a circular, 200 km altitude, polar orbit with approximately 2 h periodicity. CGRS consists of two large CsI(Tl) crystals as the main and anticoincidence detectors. The large CsI crystal of CGRS has a higher detector effective area than other lunar gamma ray spectrometers. For its 1-year mission, gamma ray spectra including many peaks of major elements and trace elements on the lunar surface have been measured by CGRS. Global measurement within 0.55-0.75 MeV is given here to describe the distribution of radioactive composition (e.g., uranium and thorium) on the lunar surface. Although CGRS has a lower energy resolution that cannot separate the uranium peak from others in this energy region, 609 keV uranium gamma ray line dominates the shape of the spectrum in this energy region. Therefore, the radioactive map can indirectly describe the uranium distribution on the lunar surface. The radioactive map shows that the higher radiation is concentrated in the Procellarum KREEP Terrene (PKT) on the nearside with an oval shape. The secondary high-radiation is located in South Pole-Aitken (SPA) basin. Lunar highlands have lower concentration. The relationship between radiation and topography displays different linear correlations for lunar highlands and SPA basin, which imply the different processes for these two regions.     

理学ZSX系列X荧光光谱仪中文软件开发

介绍了日本理学ZSX系列X荧光光谱仪的特点和新开发的中文版软件的功能。     

用原子吸收仪进行钛的紫外分光光度测定

在原子吸收仪上添置了一个自制的简易比色皿托架，成功地利用原子吸收仪进行TiO2与二安替比林甲烷显色的分光光度测定。