我国燃煤汞沉降的数值模拟

利用CMAQ-Hg(Community Multi-scale Air Quality-Mercury)模式模拟了我国燃煤排放的大气汞在我国区域的沉降分布状况,其中气象模式为MM5.模式中包括了三种价态汞(气态元素汞(GEM)、气态活性汞(RGM)和颗粒汞(PHg))的气相、液相、非均相化学反应过程以及输送、干湿沉降等物理过程.中国燃煤排放的大气汞中RGM所占比例较高,约为58.4%～66.8%,这导致我国汞沉降量较大.模拟结果表明,在我国的西南地区、华东地区以及京津塘地区燃煤汞的沉降较高,在这些区域的沉降通量高达2～6μg m-2mon-1.燃煤大气汞排放形态对汞的沉降有重要影响,减少燃煤汞排放中RGM的比例能够显著降低我国区域汞的沉降通量.     

TTS技术在电视天气预报配音中的应用与设计

利用Micmsoft speech SDK开发包,进行语音合成的二次开发,在VB集成环境下,建立天气预报语音合成转换程序,实现实时语音输出及语音波形文件输出,使用天气预报文本转语音的功能,可满足电视《天气预报》配音之要求。     

矢量曲线自动综合算法的研究

随着GIS规模的扩大,GIS软件需要处理的问题也越来越多,尤其是在制图综合方面,虽然前人已经提出了很多关于计算机自动制图综合的算法,但是目前的软件在这方面的功能还不能令人满意.文章就是结合前人的一些工作针对曲线的自动制图综合提出的一种可以保留较多曲线特征点的综合算法,并在计算机上得到了实验效果.     

Can pharmaceuticals interfere with the synthesis of active androgens in male fish? An in vitro study

The in vitro interference of fibrate (gemfibrozil, clofibrate, clofibric acid), anti-inflammatory (ibuprofen, diclofenac), and anti-depressive (fluoxetine, fluvoxamine) drugs with key enzymatic activities—C17,20-lyase and CYP11β-involved in the synthesis of active androgens in gonads of male carp have been investigated. Among the tested compounds, fluvoxamine and fluoxetine were the strongest inhibitors of C17,20-lyase and CYP11β enzymes, with IC50s in the range of 321-335 μM and 244-550 μM, respectively. To our knowledge this is the first report on the interaction of pharmaceutical compounds with enzymatic systems involved in the synthesis of oxy-androgens. As oxy-androgens are known to influence spermatogenesis and stimulate reproductive behavior and secondary sexual characteristics in male fish, this work highlights the need for further investigating these endpoints when designing specific in vivo studies to assess the endocrine disruptive effect of pharmaceuticals in fish.     

Source model of Noto-Hanto-Oki earthquake tsunami of 7 February 1993

A source model was discussed for a small tsunami accompanied by the Noto-Hanto-Oki earthquake (M _s 6.6), striking Japan on 7 February, 1994. Assuming a fault model under the sea bottom, we estimated the focal parameters jointly, using synthesized tsunami source spectra as well as the tsunami numerical simulation. The fault proposed by this study consists of a plane sized 15×15 km, dipping N47°W with the dip angle of 42°, which is almost pure reverse fault (slip angle 87°) with a dislocation of 1 meter. The numerical simulation shows that the shallow sea in the source region caused a comparatively long recurring tsunami (the periods are 12–18 minutes) in spite of its small size. The model fault is corresponding to an aftershock area of this earthquake.     

卤素和硼—金锑砷汞铊矿床指示元素

本文通过２０５个样品，８２０个Ｆ、Ｃｌ、Ｉ、Ｂ分析数据讨论它们在Ａｕ、Ｓｂ、Ａｓ、Ｈｇ、和Ｔｌ矿床中含量变化、富集程度及与矿的关系，特别是与Ａｕ、Ｔｌ成矿的密切关系，提出卤素和硼是低温矿床有重要意义的指示元素。它们在矿床岩矿石中含量，除个别样品外，一般富集系数均在０．ｎ￣ｎ范围变化。     

外向式杯[4]芳烃偶氮类新试剂的合成及其与钴(II)显色反应的研究

合成了一种外向式杯 [4 ]芳烃偶氮衍生物新试剂 ,试验了其性质 ,并研究了与钴 (II)的显色反应条件。在乳化剂OP存在下及pH9～ 10的缓冲介质中 ,形成稳定的红色络合物 ,其最大吸收波长为 5 10nm ,摩尔吸光系数为 1.60× 10 4 L·mol- 1 ·cm- 1 ,钴含量在 0～ 2 5 μg/ 2 5mL范围内符合比尔定律。本法灵敏度不太高 ,但选择性较好。     

区域矿产资源经济综合指标体系的确定与方法选择

区域矿产资源经济综合评价是矿产普查与勘探学科和地质经济学科中十分重要的新分支.本文侧重讨论了区域矿产资源经济综合评价中的评价指标体系的构造、评价指标效果值的确定、综合评价方法和计算机评价系统的建立等问题.     

Fundamental issues in quantitative estimation of mineral resources

Several issues considered to be fundamental in quantitative estimation of mineral resources and selection of mineral targets are addressed. Integration of multiple data sets, either by experts or by statistical methods, has become a common practice in estimation of mineral potential. Several major problems in data integration must be solved to significantly improve mineral resource estimation. Issues related to randomness of mineral endowment, basic statistical tools, exceptionalness of ore, and economic truncation and translation are discussed in the first part of the article. A number of important technical problems in data integration are also identified; they include data compilation, information enhancement, information synthesis, and target selection.