天地图·湖南:资金是最大困扰

正今年财政预算资金300余万元,只能够应付日常更新和维护工作;如果有大型外业采集数据和购买大型软硬件设备、数据等,缺口就会很大。     

长沙矿冶研究院选矿工程技术研究所

长沙矿冶研究院是中央直属大型科技企业,是“国家金属矿产资源综合利用工程技术研究中心”的技术依托单位,选矿工程技术研究所主要从事选矿工程技术及设计、选矿药剂、环保技术和新型高效选矿设备的开发研究,     

长沙矿冶研究院选矿工程技术研究所

长沙矿冶研究院是中央直属大型科技企业,是“国家金属矿产资源综合利用工程技术研究中心”的技术依托单位,选矿工程技术研究所主要从事选矿工程技术及设计、选矿药剂、环保技术和新型高效选矿设备的开发研究,拥有一批国际国内知名的专家,其中中国工程院院士1人、捷克斯洛伐克工程院院士1人、     

浅议CFG桩在小场地软弱地基加固处理中的应用

文章介绍在小场地、无施工配电、大型设备不能进场施工的情况下,采用小直径CFG桩进行地基加固处理的经验,可供条件类似的场地借鉴.     

长沙矿冶研究院选矿工程技术研究所

长沙矿冶研究院是中央直属大型科技企业,是“国家金属矿产资源综合利用工程技术研究中心”的技术依托单位,选矿工程技术研究所主要从事选矿工程技术及设计、选矿药剂、环保技术和新型高效选矿设备的开发研究,拥有一批国际国内知名的专家．其中中国工程院院士1人、捷克斯洛伐克工程院院士1人、教授14人、博士6人、高级工程师32人,     

比利时电容换能技术

自采用电容电桥换能技术以来,使换能装置的灵敏度得到显著提高,在许多高灵敏的精密仪器中得到了广泛应用。但是,对电容换能器的长期稳定指标的报导较少。对于地球物理特别是地形变仪器来说,由于需长期连续观测记录,仪器的长期稳定性是很重要的技术指     

长沙矿冶研究院选矿工程技术研究所

长沙矿冶研究院是中央直属大型科技企业,是“国家金属矿产资源综合利用工程技术研究中心”的技术依托单位,选矿工程技术研究所主要从事选矿工程技术及设计、选矿药剂、环保技术和新型高效选矿设备的开发研究,拥有一批国际国内知名的专家,其中中国工程院院士1人、捷克斯洛伐克工程院院士1人、教授14人、博士6人、高级工程师32人,技术力量雄厚,三十多年来,取得了大量的科研成果。我们热情为广大客户提供相关的技术服务和产品。     

基于Android的室内增强现实系统的实现

针对目前人们在大型室内建筑中难以进行自我定位、易于迷失方向,不能很快到达目的地的问题,本文结合增强现实具有虚实结合、补充现实的特点,设计并实现了基于Android移动端的室内增强现实系统。该系统通过移动设备的摄像头不仅可以看到现实的场景,更重要的是补充视景方向的详细信息,从而使用户动态了解周边环境,并以简洁的方向引导解决人们在大型室内环境中定位难、寻路难、寻找目标难的问题。并通过在上海百联中环购物广场进行本系统的实际应用试验,验证该系统的有效性。     

长沙矿冶研究院选矿工技术研究所

长沙矿冶研究院是中央直属大型科技企业,是“国家金属矿产资源综合利用工程技术研究中心”的技术依托单位,选矿工程技术研究所主要从事选矿工程技术及设计、选矿药剂、环保技术和新型高效选矿设备的开发研究,拥有一批国际国内知名的专家,其中中国工程院院士1人、捷克斯洛伐克工程院院士1人、教授14人、博士6人、高级工程师32人,技术力量雄厚,三十多年来,取得了大量的科研成果。我们热情为广大客户提供相关的技术服务和产品。     

我国与美国联合开发计算机软件

我国电子工业部六所华胜计算机有限公司最近与美国升阳软件公司就建立初始设备制造合作关系,在北京签字。 美国升阳软件公司是当今世界上大型工作站生产厂家。华胜计算机有限公司在全面引进该公司生产、开发和设计技术的基础上,推出了华胜系列工作站;共同开发了关系数据库管理系统、中文语言环境和一系列支撑软件。 这些工作站已成功地运用在计算机辅助设计、石油、地质勘探、气象预报、能源、交通管理、信息处理等领域。     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied     

Advances in Polar Science CONTENTS(Volume 25,2014)

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Guide to Authors： Journal of Mountain Science

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.     

Journal of Mountain Science(JMS)

<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by     

Influence of livestock soil eutrophication on floral composition in the Pyrenees mountains

Livestock behaviour in the Pyrenees includes free grazing and a long resting period that provokes the accumulation of dung and urine in some places,so-called camping areas. The aims of this study were （i） to analyze any change in floral composition,and in nutritional and chemical contents of plants in a livestock camping area; and （ii） to relate the floral composition with soil chemical properties. In a linear transect,five sampling zones were established,from the centre of the camping area to the surrounding Nardus stricta-dominant pasture. The above ground plant biomass and the topsoil were sampled in each zone with 6 replicates per zone. Plant species were classified and weighed to calculate above ground biomass,nutritional and chemical contents,and Shannon diversity and evenness indices. Additionally,soils were sampled in two periods,at the beginning and at the end of grazing period. Soil available nutrients （nitrate,ammonium,phosphorus,potassium,calcium and magnesium）,total nitrogen,organic carbon and pH were measured.
Plant chemical contents （protein,lignin and others） were significantly related to the proportions of grasses,legumes and other plants; so,the protein content is positively correlated with legumes plant biomass while lignin content is negatively correlated with grasses. Both plant and soil nutrients increased linearly towards the centre of the camping area. However,the relationship among plant species richness,diversity and evenness relative to its position along the studied transect was bell-shaped. From the outskirts to the centre of the camping area,plants with low nutrient demand were progressively replaced by those with medium and high nutrients demand and by pioneers.
Nardus stricta-dominant pasture has low plant diversity and plant nutrient content as well as a poor soil nutrient availability. The presence of the camping area introduced patches with more soil nutrients and new species in the large spatial scale. However at a small spatial scale,the strong soil nutrien     

General Table of Contents(Vol.11,2014)

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介绍GPS定位中的几个概念

文章概略介绍了利用卫星进行定位的原理 ;由卫星信号传播、信号接收和SA政策等引起的理论误差 ;给出了多种快速、高精度定位的工作模式和观测点选择的原则 ;列出了将WGS - 84坐标转换为我国坐标的公式及解算参数的具体方法 ,供读者在GPS工作中参考。