虚拟天文台的技术进展

虚拟天文台是在望远镜和探测器的研制技术、计算机网络技术取得突破性进展的条件下产生的，与最新的信息技术紧密结合成为其发展最鲜明的特点。用可扩展标记语言（简称XML）技术封装天文数据，把虚拟天文台建立在网格的体系结构之上是当今虚拟天文台技术发展的主流。按照目前虚拟天文台具代表性的层次式体系结构分层介绍各个层次的相关技术，同时提出充分利用现有资源优势实施中国虚拟天文台计算的设想。     

海洋调查仪器设备在海上试验中的质量控制

阐述了海洋调查仪器设备在海上试验过程中质量控制的程序和步骤,对参加海上试验的仪器设备的试验操作和检查流程作了规范化描述,对仪器设备海上试验中出现故障及技术偏离的处理流程进行了探讨,并对试验结束后试验监督的结论和应备齐的文件记录进行了说明.为我国海洋调查仪器开展规范化海上试验及质量控制提供了依据.     

合肥台数字地震仪运行中的一些经验

1999年12月合肥台数字地震仪开始安装并运行,2000年12月正式通过验收,2000年4月正式产出数字地震观测月报,目前仪器运行良好。经过与模拟记录仪的对比,呈现出许多优点,于2001年7月正式停记模拟仪器。在数字地震仪器的使用中,有教训也有经验,现介绍给大家,仅供参考。 1 仪器安装与维护 电源系统。电源系统是保障仪器正常运转的重要环节,为此,合肥地震台数字仪设备所用的电源系统都有电源避雷器与重复接地,接地电阻< 4 W。由于合肥地震台记录室至摆房约有200 m,数字地震计需要一路电源系统,故摆房的电源系统有两路,一路从UPS输出,采用地缆…     

六要素轻便气象遥测仪的微机接口和系统软件研制

本文简要叙述了六要素轻便气象遥测仪的构成、功能和微机接口,并简介如何使实时系统接口更为简单、经济、稳定可靠。此外,着重讨论了应用系统软件研制的一些基本方法、技巧。     

地层元素测井研究进展

地层元素测井是一种利用剥谱分析、聚类分析等技术对地层进行评价的测井方法。地层元素测井以元素测量为基础,从岩石成分的角度提供丰富的地质信息。通过对地层元素测井的原理及仪器的讨论,对地层元素测井的历史沿革及发展动态进行回顾,并且对地层元素测井的技术发展方向和研究趋势进行了展望。     

Raman microspectrometry, FT-IR and inclusion characteristics of gem garnets from Tanzania and Madagascar

Chemical composition, Raman microspectrometry, and Fourier transform infrared (FT-1R) and SEM-CL (Cathodluminescence) analyses are carried out for Tanzania and Madagascar garnets for locality identification. Inclusion study was sustained after electron probe microanalysis (EPMA). Needle-like illmenites, apatites and zircons were the most common solid inclusions in Tanzania garnets. Madagascar garnets revealed rutile needles and apatites were also observed, but differences in size, shape and distribution patterns were noticed compared to Tanzania garnets. Tanzania garnets exhibited all types of observable fluid inclusions such as ““ fingerprint““ pattern, called Type Ⅰ-A, liquid-only (L) single phase fluid inclusion, called Type Ⅰ-B and Type Ⅱ-A ( L S), Type Ⅱ-B ( L V) and Type Ⅲ-A (L Sylvite even if all examined garnets from three localities retained ““fingerprint““ features, so called, partially healed fractures, in common. Chemical composition, Raman microspectrometry and Fourier transform infrared (FT-IR) analysis taken turned out to be useful methods for the purpose of this study. Using consequences of SEM-CL and inclusion study, accordingly, the locality identification of gem-quality garnets is capable of being available in further application for other kinds of gemstones.     

Exopolysaccharide production by four cyanobacterial isolates and preliminary identification of these isolates

Four marine cyanobacterial isolates, named 104, 109, 113 and 115, from marine water off China＇s coast can release a large amount of exopolysaccharide （EPS） to medium. The effects of different components in medium on EPS production by the four isolates were investigated. Under the optimal condition, the EPS released by isolates 104,109, 113 and 115 reached 7.48 g L^-1, 8.33 g L^-1, 18.26 g L^-1, and 6.78 g L^-1 within 14 d,respectively. Based on the conventional identification methods for cyanobacteria,these isolates were assigned to genus Cyanothece.     

伸缩仪台站维护管理要点分析

总结了宜昌地震台SS-Y伸缩仪在安装、调试、维护、管理等方面的经验.