GIS专业特色方向的实践性教学

论证了用3维可视化作为我校GIS专业的特色方向.对3维可视化的实践性教学提出实施方案和具体技术流程.通过完善和改建相应的实验室,完成校内的GIS特色方向的教学和实践;通过与多个教学实习基地的产学研合作,使得同学们在实习基地进行进一步的训练,以承担生产任务的方式完成3维可视化的最后阶段.实践表明,该特色方向在专业能力培养和适应市场需求方面效果良好.     

桂东南地区区域成矿特征和找矿方向

桂东南地区地处湘桂地块与华夏地块交接地带的云开隆起西缘.本区先后经历了加里东期、海西期-印支期和燕山期三大构造运动阶段.燕山运动时,由于太平洋板块向北西俯冲作用和印度板块向北俯冲作用,不仅导致强烈的构造-变质-岩浆侵入活动,而且产生大量的火山喷发,与此同时伴随了一系列的内生成矿作用,形成本区的金银多金属成矿的高峰期.     

EFFECTS OF CO—CULTURE AND SALINITY ON THE GROWTH AND AGAR YIELD OF GRACILARIA TENUISTIPITATA VAR LIUI ZHANG ET XIA

Gracilaria tenuistipitata var Liui were mono-cultivated and co-cultivated with Pinctada martensii under high(33) and low(21) salinity conditions in laboratory.The daily growth rate of the alga was determined.Tissue carbon and nitrogen contents,the yield and fractional composition of agar were analyzed.Results showed that:1.Gracilaria grew better under low salinity conditions,the daily growth rate was twice that under high salinity conditions.Co-cultivated algae grew faster than mono-culti-vated algae under low salinity conditions,the daily growth rate was about 37.6?higher.2.Compared with mono-cultivated algae,tissue nitrogen contents of co-cultivated algae were higher,while the C:N ratios were much lower.3.The agar yields of co-cultivated algae were much lower than those of mono-culti-vated algae.Agar yield was found to be negatively correlated to the tissue nitrogen contents,and positively correlated to the C:N ratios.4.The highest fractional yields obtained from co-cultivated algae were extracted with 40?ethanol,while from mono-cultivated algae,the highest fractional yields obtained were extracted with distilled water at room temperature.     

PHYLOGENETIC RELATIONSHIPS AMONG PUFFERFISH OF GENUS TAKIFUGU BY RAPD ANALYSIS

AmpLifications with 300 10-base primers under predetermined optimal reaction yielded 2762 reproducible amplified fragments ranging from 200 to 3000 bp. Genetic distances among five species of Takifugu and Lagocephalus spadiceus as outgreup were calculated based on the presence/absence of the amplified fragments. Topological phylogenie trees of the 5 species of Takgfugu and the outgroup were gen-erated by Parsimony and Neighbor-Joining analysis based on RAPD data set. The genetic distance between T. rubripes and T. pseudommus was almost the same as that between individuals within each species, but was much smaller than that among T. rubripes, T. pseudommus and the other species. The molecu-lar data from RAPD analysis convincingly showed that T. rubripes and T. pseudommus should be the same species.     

江苏矿产地质工作程度

江苏矿产地质工作研究历史悠久，研究程度较高。对江苏以往矿产地质工作作较全面的回顾，对今后进一步开展地质矿产工作及矿产的综合开发利用具有重要意义。     

固体地球科学与全球变化研究

固体地球科学要积极参与全球变化的研究。全球增暖的温室气体ＣＯ２增率与大气升温呈正相关性。第四纪的最末１．５Ｍａ间有１７次冰期，其成因可能与米兰科维奇周期律有关。除现今估算的人类每年燃料排放的ＣＯ２量外，地球内部由火山和地震等的大地构造原因释放的ＣＯ２量需定量估算，甚至可能是大气ＣＯ２增率的主要来源。我国文化历史悠久，对历史中的盛世与气候变迁关系应深入研究。我国的自然条件复杂而独特，应研究其变化特色     

地震电磁关系模拟实验室“八五”技术改造

由国家地震局地球物理研究所承担的“震磁电模拟实验系统技术改造”课题，对震磁电关系模拟实验室进行了实验系统的改造。该文简要地介绍了该课题所完成的主要工作，包括：电阻率ＣＴ仪，电磁实验用十通道智能仪表放大器，磁天平及非磁滞乘磁系统。     

地图扫描数字化的点位精度分析

地图扫描数字化为建立ＧＩＳ提供了一种较好的原始地图数据获取方法，本文讨论了影响地图扫描数字化精度的诸种因素，分析了定向点和采样点误差对地图数字化结果的影响，发展了定向点和采样点的自动对中算法，从而保证地图扫描数字化的精度能满足建立ＧＩＳ的要求。     

Calculation of the parameters of georesistivi－ty anisotropy and case history of earthquake precursors

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