野外金的快速分析初探

金的野外快速分析,是金矿地质普查找矿长期探索要解决的一个技术难题,经我们近年来反复实验得到解决。本方法的理论基础可靠,操作简单易学,适用性强,分析成本低。     

应用XRF分析仪快速分析铁精矿中的Si、 S、K和TFe含量

论述了快速分析铁精矿中Si、S、K和TFe含量的现场X射线荧光技术，其分析精度、准确度均符合化学分析的误差标准，满足实际生产要求。     

地震动强度与地震烈度速报研究

本在总结了美、日等国家和我国大陆与台湾地区基于实时或近实时强震台网的地震动强度（烈度）速报方法的基础上，对我国地震动强度（烈度）速报及计算机软件编制中的关键技术问题进行了讨论。     

地震综合信息多渠道发布系统设计与实现

针对地震速报信息、地震预警信息发布渠道单一，无法与地震应急成员单位进行及时有效信息的共享问题，天津市地震局对接市突发公共事件预警信息发布系统、武警总队参谋部和中新生态城智慧城市管理中心，通过开发综合信息发布平台，以国际通用预警CAP协议数据包的形式向成员单位实时推送地震预警、速报信息，实现通过电视媒体、预警终端、短信平台发布地震实时信息的目的，同时各应急成员单位通过地震信息服务系统推送的信息快速生成各单位相应的应急处置方案，为地震应急救援工作提供依据。     

热带气旋迅速加强标准的研究

根据１９４９－１９９０年台风年鉴及热带气旋年鉴资料，在介绍以往热带气旋迅速加强的标准基础上，提出西北太平洋和我国近海热带气旋迅速加强的新标准，通过与以往标准的比较，认为新标准在定义上更加严谨，在使用上亦相当简便，可在业务预报及台风科学研究上作为固定用语应用。     

地震速报回顾及展望

分秒必争的地震速报在防震减灾工作中是非常重要的。本文进行了模拟测震地震 速报与数字测震地震速报的对比，总结分析了两者的差异。对地震速报工作的不足之 处提出了看法．对以后地震速报的改进、提高作出初步的设想。     

Observations of nitric oxide fluxes over grass

Eddy correlation measurements of NO vertical flux were made periodically from October 1983 through June 1984 at a height of eight meters above grass in northeastern Illinois, U.S.A. From 207 data points, each representing a 25 min average, 19 daytime cases and 8 nighttime cases were selected on the basis of steady, nonadvective atmospheric conditions. Each case was represented by a set of data constituting a 3 to 5 hr average. Concentrations of O₃, NO, and NO _y (from which NO₂ was inferred) and local atmospheric and surface conditions also were measured, to provide the information necessary to assess the relative importance of surface deposition, surface emission, and air chemistry on the observed NO flux. On the basis of a linear regression analysis applied with independent variables representing physical, chemical, and biological processes, surface uptake of NO was very small for data primarily collected in the daytime during spring, and measured deposition velocities at a height of 8 m were very small, much smaller than expected for NO₂. For the same time period, the surface emission rates of elemental nitrogen in NO were in the range of 1.4 to 4.2 ng m^-2 s^-1 for moist, unsaturated soils at temperatures near 15° C. These emissions were partially masked in the measured fluxes by rapid in-air chemical reactions involving O₃ and NO₂. The effects of rapid in-air chemical reactions involving O₃ were to decrease the (upward) flux of NO with height. While the information collected at night was too limited to strongly support hypotheses concerning emissions and deposition, a pathway for NO production by reactions involving NO₃ and related compounds was indicated. For daytime conditions, this production pathway is not evident, probably because of the relatively strong effects of photochemical reactions involving NO, NO₂, and O₃.Formerly with the Chemical Technology Division of Argonne National Laboratory and currently affiliated with Bio-Rad Laboratories, Digilab Division, Minneapolis, MN, U.S.A.     

Study of dislocation model and evolution characteristics of vertical deformation field of gonghe M S=6.9 earthquake

The preliminary research results of vertical deformation dislocation model of GongheM _S =6.9 earthquake show that, the causative structure is a hidden fault with strike N60°W, dipping S47°W, which lies near the current subsidence center of Gonghe basin. The rupture length and width are 30km and 14km, the upper and lower bound depth of the fault in width direction are 3km and 17km respectively. The maximum coseismic and preseismic vertical deformation of GongheM _S =6.9 earthquake are 247mm and about 100mm. The reasons why there existed rapid postseismic uplift are also given a tentative discussion. The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,15, 289–295, 1993.     

原子吸收石墨炉快速程序测定痕量金

制定了石墨炉快速测定Au的程序。通过快速干燥,省去灰化步骤或缩短灰化时间,使测定程序从常规法所需的79s缩短至18s(PE-3030)或25s(PE-603)。测定时间由2min降为1min,测定速度提高了一倍,并得到相似的准确度及精密度。     

对流层及平流层低层全球动能的季节性急变

利用１９８０－１９８８年ＥＣＭＷＦ的资料，分析对流层５００ｈＰａ，３００ｈＰａ和平流层低层１００ｈＰａ全球范围的纬向平均动能和涡动动能的季节过渡，比较不同层次不同纬度带动能模态的季节性急变，得到如下结论：（１）北半球热带与温带各层次的ＫＺ都有季节性急变，发生在３－４月和１０月附近，而南半球仅在热带有急变。（２）北半球热带地区ＫＺ在６月还有一次季节性急变，出现有１００ｈＰａ和５００ｈＰａ．（３）１０