规划CAD数据到GIS数据的分类组织研究     

储立新  张叶  安为伟  孙毅中  梅士员 《现代测绘》2006,29(6):13-15

数据组织是CAD与GIS的主要区另4之一，本文主要根据规划CAD数据和GIS数据的特点，研究规划CAD数据到GIS数据的分类和编码。  相似文献   

Disposal of wastewater containing Congo Red by synthesizing layer double hydroxide in-situ     

朱荣  崔康平  彭书传  杨远盛  陈天虎  安志环  徐晓春 《中国地球化学学报》2006,25(4):391-395

Based on the principle of synthesis, a new method was put forward to dispose Congo Red anion-containing dyestuff from wastewater and its feasibility was also examined. The principle of the method is described as follows: Mg²⁺ and Al³⁺ are hydrolyzed to form Mg/Al-LDH by adding Mg²⁺, Al³⁺ and NaOH in wastewater containing anion dyestuff, which is selectively intercalated with the interlayer of LDH in order to balance positive structural charge. While Mg²⁺ and Al³⁺ are co-precipitated to form LDH, the anion dyestuff in wastewater will be removed by LDH synthesized in-situ, as is confirmed by X-ray diffraction analysis of settlings and chemical analysis of aqueous samples. In this work, we studied the influence of Mg/Al mole ratio, pH value, time and temperature of reaction on the removal of anion dyestuff and the use of Mg and Al. The experimental results showed the maximum removal efficiency of anion dyestuff could be attained when pH value was 9.0, and Mg/Al mol ratio was 2: 1, reaction duration was 2 hours, and the effect of temperature was not remarkable, and the removal efficiency could reach 100%. Meanwhile, the Mg and Al added could be made good use of. This technology has the advantage of extraordinary efficiency of wastewater disposal. Foundation item: Project supported by the National Natural Science Foundation of China (40472026).  相似文献   

粤东火山岩盆地铜-铅-锌多金属矿床找矿新发现与认识     

郭锐  卜安 《矿产与地质》2006,20(3):243-246

粤东地区燕山期火山岩盆地沿NE向呈带状展布,其中分布有众多的铜-铅-锌多金属矿点,具有良好的成矿地质条件和找矿潜力。近年该区的地质勘查工作取得了突破,发现了尖笔岽、四望坪矿床。矿床为隐伏的脉状充填型热液型矿床。隐伏矿床地表常表现为矿化蚀变带或褐铁矿化的小破碎带,土壤次生晕异常形态与隐伏矿体走向一致,异常元素组合和成矿元素一致,是本区隐伏的脉状矿床的有效的找矿标志。  相似文献   

东北地区月平均大气环流型与哈尔滨-气候关系的初步研究   总被引：9，自引：1，他引：9  

贾丽伟  李维京  陈德亮  安晓存 《气象学报》2006,64(2):236-245

利用基于英国Lamb(1950年)发展的大气环流分型方法的Jenkinson(1977年)法对东北地区1951—2002年的月平均海平面气压场(MSLP)进行环流分型。由月平均海平面气压场算出6个环流指数,并由此划分出27种环流类型,分析了其中出现频率最高的5种主要环流类型(N,NW,C,CSW,SW)在不同时间尺度下的变化规律及它们与哈尔滨月平均温度的关系,利用逐步回归方法得到了温度距平的拟合曲线。给出了各种环流类型的月平均降水量和与哈尔滨降水密切相关的C,CSW和SW 3种环流类型对应的平均海平面气压合成图。结果表明:哈尔滨冬季以N,NW型为主,夏季以C,CSW和SW型为主。出现N和NW型时气温偏低,降水偏少;而出现C,CSW和SW型时气温较高,降水偏多。用6个环流指数中的地转风V和大尺度平均温度t可以建立其与温度距平之间的一个统计模式,利用此模式,能解释哈尔滨1951—2002年温度变化方差的77.3%。C,CSW和SW 3种环流类型为哈尔滨的主要降水类型,C型与哈尔滨总降水的相关关系很好,并且近20年来哈尔滨主要以C型降水为主。这种研究大尺度大气环流与区域气候变量—温度、降水之间关系的方法是一种统计降尺度(statistical downscaling)方法,可以用于区域气候预测。  相似文献   

边界层风廓线雷达测温系统设计   总被引：1，自引：0，他引：1  

王勇  安建平  卜祥元  贾晓星 《气象》2006,32(10):52-56

风廓线雷达在气象领域的应用越来越广泛，在风廓线雷达基础上增加电声测温系统（RASS）实现大气温度实时探测是一种经济有效的办法。文中介绍了已实现的某RASS系统设计，讨论了RASS测温的原理，针对RASS测温的精度、高度、影响因素等进行了性能分析，论述了系统的实现方案，最后给出了该RASS的实际测温结果和测温谱图，验证了该设计满足系统要求，能实现实时测温。  相似文献   

"中国地学大断面与深部地球物理资料整理"项目成果介绍     

杨健  方盛明  孙国伟  安学伟  张永超 《国际地震动态》2006,(9):6-8

本文详细介绍了“中国地学大断面与深部地球物理资料整理”项目的立项背景、目标、所开展的主要工作、取得的成果、研究成果的社会效益和对该领域研究未来工作的展望。  相似文献   

基于VB．NET征地拆迁数据处理系统的设计与实现     

柯福阳  余学祥 《国土资源信息化》2006,(4):25-28

为了解决征地拆迁数据处理过程中数据量大、统计复杂、容易出错、查询困难等问题,基于VB-NET成功研制了征地拆迁数据处理软件。它的研制成功将提高工作效率,使征地拆迁工作走向科学化、规范化管理。本文介绍了LANDMS软件的结构、组成、功能、测试及特点。  相似文献   

Geochronology of a surface core in the northern basin of Lake Qinghai： Evidence from ^210pb and ^137Cs radionuclides   总被引：3，自引：0，他引：3  

徐海  艾莉  谭亮成  安芷生 《中国地球化学学报》2006,25(4):301-306

1 Introduction The radionuclides 210Pb and 137Cs are of particularimportance for estimating the dates of recentsediments. It was Goldberg (1963) who firstlysuggested that the disequilibrium between 210Pb and226Ra could serve as a geochronometer applicable…  相似文献   

Application of 3S techniques in the assessment of eco-environmental impact of the Shennongjia ski field, Hubei Province, China     

黄磊  程胜高  朱罡  安琪  黄丽华 《中国地球化学学报》2006,25(4):413-417

1 Background of the project and research route 1.1 Background of the project The Niuchangpin ski field at Shennongjia is designed as the biggest natural ski field in the Huazhong (central China) area, which will be a multifunctional ski field base incl…  相似文献   

Mineral Components, Texture, and Forming Conditions of Hydrothermal Chimney on the East Pacific Rise at 9°-10°N     

郑建斌  曹志敏  安伟 《中国地质大学学报(英文版)》2007,18(2):128-134

To characterize the hydrothermal processes of East Pacific rise at 9o-10oN, sulfide mineral compositions, textural, and geochemical features of chimney ores were studied using ore microscope, scanning electron microscope, X-ray diffraction analysis, and electron microprobe techniques. Results show that there are three mineral assemblages for the hydrothermal chimney ores, namely: (i) anhydrite marcasite pyrite, (ii) pyrite sphalerite chalcopyrite, and (iii) chalcopyrite bornite digenite covellite. Mineral assemblages, zonational features, and geochemical characteristics of the ore minerals indicate that ore fluid temperature changed from low to high then to low with a maximum temperature up to 400 ℃. The chimney is a typical black smoker. The initial structure of the chimney was formed by the precipitation of anhydrites, and later the sulfides began to precipitate in the inner wall.  相似文献