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1.
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    2.
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    4.
    基于改进的广义S变换的低频阴影检测   总被引：1，自引：1，他引：0  
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    5.
    正April 7-8,2018,Delhi,India International Symposium on Geotechnics of Transportation Infrastructure Tel:+91-11-26597336Fax:+91-11-26581117Email:isgti2018@gmail.com Web Site:http://www.isgti2018.org/index.html May 27-30,2018,Shanghai,China GeoShanghai International Conference 2018Tel:+86(21)-6598-4551Fax:+86(21)-6598-5210Email:geoshanghai@:tongji.edu.cn Web Site:http://www.geo-shanghai.org/  相似文献   

    6.
    正October 1,2016,Chongqing,China The 9th National Youth Conference on Geomechanics and Geotechnical Engineering Tel:+86-23-62896924;+86-23-62459033Fax:+86-23-62652841E-mail:nycgge2016@163.com Web Site:http://nycgge2016.cqjtu.edu.cn/October 5-6,2016,Kuala Lumpur,Malaysia  相似文献   

    7.
    侯马红卫五七厂 圃人 汐酗-圈圃瞩网p习”刁 一、名称与用途-罔网囚回口回田田 钟式土地电自动记录仪 土地电断续点可见记录,以代替人工记录。 二、基本指标 1.测量范围:上50微安或0～100微安 2.测量精度:1微安 3.打点速度:20次/时 4.记录纸走速:20mm/时 三、传动原理 构造示意图 //////1,WHffe tp//2,HbDfuW /H//Mdr 3,Htljed MW OD////ti/D 翼,打印架拨什 J/rt/11///NMMI IWI 5,M＄ft (MWP N//////～-jv”HW/H/11,L\opJ D.凹兰三二主塞空兰三三三三三三三曰e云5云三利。n巾凸而一//nI,巳等分齿轮 tb------ry”-dyMtwCW ] H…  相似文献   

    8.
    正2014年《地球物理学进展》为双月刊,全年6期,每期定价70元,全年定价为420元。订刊联系方式(可从本刊编辑部网站查阅和下载订购单)(1)本刊编辑部(邮局汇款与单位电汇均可)汇款地址100029北京市9825信箱《地球物理学进展》编辑部电话010-82998113,010-82998105传真:010-62369620电子邮件prog@mail.iggcas.ac.cn,geophys@163.com网站http://www.progeophys.cn  相似文献   

    9.
    正2014年《地球物理学进展》为双月刊,全年6期,每期定价70元,全年定价为420元。订刊联系方式(可从本刊编辑部网站查阅和下载订购单)(1)本刊编辑部(邮局汇款与单位电汇均可)汇款地址100029北京市9825信箱《地球物理学进展》编辑部电话010-82998113,010-82998105传真:010-62369620电子邮件prog@mail.iggcas.ac.cn,geophys@163.com网站http://www.progeophys.cn开户行中国农业银行北京健德支行账号190901040000456  相似文献   

    10.
    <正>This article is intentionally published to make erratum to the print version and the online version of Vol.60(2017)NO.2(https://link.springer.com/article/10.1007/s11430-015-0247-9).Citations of the following publications should be added to the list of Reference for TCCON data use:Wennberg P O,Roehl C M,Wunch D,Toon G C,Blavier J F,Washenfelder R A,Keppel-Aleks G,Allen N T,Ayers J.2014.TCCON data from Park Falls,Wisconsin,USA,Release GGG2014R0.TCCON data archive,hosted by the Carbon Dioxide  相似文献   

    11.
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    12.
      相似文献   

    13.
    山西大同数字遥测地震台网记录的震相特征   总被引：1，自引：0，他引：1  
    从地球及地壳的分层结构出发，使用较成熟的理论，从地震波传播的基本原理入手，结合多年的震相观察分析工作实践，选取了山西大同数字遥测地震台网近年来的一些典型震相进行了分析，得出本台网记录到震中距小于100km的地方震震相有Pg，P11，Sg，S11震中距在100km～500km的近震震相有Pn，Pg，P11，Sn，Sg,S11对比分析了在本台网内及周边地区发生的爆破与天然地震在震相上的差异性，并对其特征作了较详细的描述。  相似文献   

    14.
      相似文献   

    15.
    对兰州地震研究所的三段历史作回顾,分别为国家地震局、中国地震局兰州地震研究所的体制沿革变迁,中国科学院地球物理研究所;中国科学院兰州地球物理研究所观象台早期创建;兰州地震研究所硕士点早期阶段。  相似文献   

    16.
    叙述了在FreeBSD环境下构建基于PPTP的VPN网关的过程和技术，分析了基本概念、实现方式以及在江西省地震信息网的实际应用等。  相似文献   

    17.
    At present the development together with an intensification of anaerobic processes calls for methods of observation and control. It is very important to know intermediate metabolites of anaerobic microorganisms and the activity of methanogenic ones. Presented analytical methods are GLC analyses of lower fatty acids, alcohols, aldehydes and ketones and components of biogas. The chromatography using steam as a mobile phase is also mentioned. The method of determining the fluorescent coenzyme F420 was tested and modified. This coenzyme is specific for methanogenic microorganisms and is closely linked with their activity. The determination of the total activity of the hydrogenase system of anaerobic microorganisms by means of the rate of the consumption and evolution of molecular hydrogen was also presented. The applicability and effectivenes of these methods were verified on natural samples. All the methods mentioned above give satisfactory results with available equipment, materials and techniques.  相似文献   

    18.
    In recent decades, increased extraction of groundwater for human and agriculture consumption has led to a substantial drop in groundwater level in large areas of across the world. Declining groundwater levels is a serious problem in itself and has multiple economic, social, cultural, political, security-related, and environmental externalities. The negative economic-environmental externalities of overextraction of groundwater in the Orzouiyeh plain in the Kerman Province, Iran, were evaluated using methods such as replacement cost, production function, market prices, shadow price, and the value of the input marginal product. After evaluating externalities, the Positive Mathematical Programming method was used to evaluate different water policies to reduce the consumption of groundwater. The total economic losses due to the externalities were calculated to equal 2.8 U.S. million dollars. The damages caused by environmental externalities were calculated to equal 436.1 U.S. million dollars. The results related to the positive planning model show that the best policy among different options, such as deficit irrigation policy or combined policies, involves implementation of pressurized irrigation systems.  相似文献   

    19.
    Studia Geophysica et Geodaetica -  相似文献   

    20.
    目的:分析淋巴结结核的CT和MRI表现特点,并与病理学对照,探讨两种检查方法的应用价值。方法:回顾性分析2010年1月至2014年12月间34例经手术、穿刺病理或临床证实为淋巴结结核患者的CT或MRI影像学资料,分别从生长方式（融合/非融合）、边缘（光滑/欠光滑）、境界（清晰/欠清晰）、密度及信号、增强后强化方式（均匀/不均匀/环形规则/环形不规则）这5个方面对所受累淋巴结进行分析。结果:34例患者中共累及223枚淋巴结,其中颈部淋巴结67.7%,纵隔内淋巴结27.7%,肺门淋巴1.8%,肺内淋巴结0.5%,腹腔淋巴结0.5%,腹膜后淋巴结1.8%。所有受累淋巴结中,8.5%呈融合性生长,83.9%形态规则,79.4%边缘光滑。CT上发现的171枚病变淋巴结以等密度较多（53.8%）、低密度次之（43.3%）,MRI上发现的66枚病变淋巴结中98.5%为等T1长T2信号。所有CT及MRI观察到的病变淋巴结中,除57%的病灶密度或信号均匀外,仅伴钙化的为12.6%,仅伴部分坏死的26.9%,另外有3.6%同时伴钙化及坏死;增强扫描的204个病变淋巴结中,1%钙化显著、未见明显强化,38.7%均匀强化,伴坏死者内见不强化的低密度区,11.3%呈环形规则强化（均位于颈部）,8.3%环形不规则强化（纵隔内82.4%）,5.9%可见病变淋巴结内有分隔样强化（均位于颈部）。结论:CT与MRI对于淋巴结结核具有重要诊断价值,两者均能清晰显示病变部位、形态以及边缘情况,MRI对于病变边缘及周围情况显示较CT更明确,尤其是增强后,对于包膜及邻近组织受累情况的显示也更加敏感。   相似文献   

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