类氖铁(Fe XVII)离子能级及振子强度计算

利用原子数据模拟程序RCN／RCG、AUTOSTRUCTURE(AS)、GRASP分别对类氖铁的离子结构进行计算，计算过程包含了对波函数的相对论修正，计算结果包括电偶级光谱跃迁的能级间隔，谐振子强度，跃迁几率，并与实验值进行了比较，分析了3种原子数据模拟程序在计算原子结构上的精确度．     

煤矿排水对枣庄市清凉泉水源地污染作用分析

近年来,随着枣庄市陶枣矿区煤矿资源的大规模开发,矿坑排水对矿区地下水资源及生态环境产生的负面影响愈发突出,尤其是矿坑水沿地表河流排放途中,通过灰岩“天窗”大量灌入岩溶地下水中,造成地处煤田下游的清凉泉水源地水质遭受明显污染,供水水质难以保证。根据矿坑排水量、水源地水质、开采现状等分析认为,对串层污染进行封堵和控制矿坑水排放渠道是防治水源地污染的有效措施。     

地层剖面计算表的计算机自动处理

地层剖面计算表的计算机自动处理 ,涉及剖面是由老地层向新地层测制还是由新地层向老地层测制、褶皱的识别处理、存在回测时 (特别是在回测中又存在背向斜时 )的处理、测段厚度及分层厚度的计算等几个主要环节。文章引入剖面方向系数 η、测段方向系数κ、回测系数 ρ 3个新参数 ,建立了地层剖面计算表自动处理的数学模型 ,可以非常方便地将剖面图及其柱状图以矢量格式输出     

HISTORICAL DESERTIFICATION PROCESS IN HEXI CORRIDOR, CHINA

1IN TR O D U CTIO NH istoricdaelsertificatiisonnotonlythekeyissueon theinteractiobnetweennatureandhuman proces,sbutalsothemost challenginigssueinthecomplex reltaionshipbetweenhuman andland.Previousl,ymostChinesesci-entistisnthisfieldcarrieoduttheiresearch…     

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。     

天峨县牛坪金矿地质特征及找矿意义

广西天峨牛坪金矿位于右江盆地北东侧、天峨构造北端 ,以岩溶砂金为主 ,金矿体主要赋存于受多组断裂控制的溶蚀洼地及溶洞中。矿区内发现含 (金 )锑水晶的石英—方解石脉、方解石脉 ,脉体成份与砂金矿石成份相同 ,说明砂金矿源于岩金矿脉。此发现对黔桂地区在碳酸盐岩区寻找同类型金矿 ,对锑、水晶矿点 (床 )资料二次开发 ,研究该区金矿成矿作用 ,具有现实意义。     

A new type of isotherm for zinc liquid-solid partitioning on δ−MnO2, γ−MnOOH and manganite in seawater

This article deals with the interaction of zinc with δ−MnO₂, γ−MnOOH and manganite existing in natural water systems. The mechanism of the reaction has been studied in detail. From the fact that the “ratio of ion exchange(%)-pH” graph is an “S shaped” curve, it is possible to deduce that the chemical reaction is of the nature of cation exchange. And since the pH range of ion exchange=4, it is possible to further deduce that the reaction can be explained by the mechanism of monovalence cation exchange. The main result of this article is the discovery of a new type of isotherm which has not been mentioned in previous literature here and abroad. This isotherm cannot be represented by any presently available adsorption isotherm equations in marine chemistry. The characteristics of this new type of isotherm are as follows: the isotherm has two “knees” and three “plateaus”, the heights of these three “plateaus” are in the ratio 1:2:3. In order to explain theoretically our new isotherm, this article suggests the application of the principle of interfacial stepwise ion exchange for liquid-solid distribution of minor elements on suspended particulate matter. The corresponding isotherm equation was derived from this theory. The results obtained in this article will be of theoretical guiding significance in the study of the marine geochemistry of zinc. Projects supported by the Science Fund of the Chinese Academy of Sciences.     

ArcInfo 8在农用地定级中的应用研究--以江都市为例

数据处理与图件生成是农用地定级中的关键技术,通常由专业定级软件来完成.本文提出在ArcInfo 8系统下,利用其组件在处理空间数据和属性数据方面的功能和优势,特别是ArcMap组件中集成的VBA二次开发模块,完成定级单元的划分、定级因素因子作用分值的计算、定级因素因子作用分值图的生成以及定级指数的计算等,并以江都市农用地定级为例,加以实证研究.     

Discovery of agglutinated foraminifers from the Longzhaogou Group in eastern Heilongjiang Province

The low diversity agglutinated foraminifers are recovered from the Qihulin Formation of the Longzhaogou Group in eastern Heilongjiang, China. The foraminiferal fauna consists of 9 species of 5 genera. The common members are Cribrostomoides nonioninoides (Reuss), Haplophragmoides concavus (Chapman), H. gigas minor Nauss. Although the diagnostic zonal taxa are absent in the agglutinated fauna, according to the global stratigraphic distribution of the above-mentioned species, and the associated Pseudohaploceras ammonite fauna, the foraminiferal fauna may be of a Barremian-Aptian (Early Cretaceous) age.     

基于GPRS的实时差分系统及其在土地变更调查中的应用研究

以徐州市“数字国土”土地变更调查项目为例,介绍了利用高精度定位的GPS和便于携带、功能强大的PDA,将二者集成用于土地变更调查。文中探讨了基于GPRS公网的实时差分系统的建设及其在土地变更调查中的应用。