砂岩,泥岩和泥质砂岩中声速,孔隙度,渗透率和泥质含量间的模拟关系   总被引：1，自引：0，他引：1  

Marion  D 雍世和 《物探化探译丛》1991,(6):64-67

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三维储量（资源）分类系统—对铀的建议     

Kelter  D 王从周 《国外铀金地质》1994,11(1):75-81

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A NEW SERIAL METHOD FOR SEARCHING THE OPTIMUM OPERATING CONDITIONS OF A TECHNOLOGICAL PROCESS     

V.TRAN J.-L.MORAT D.BERTRAND Institut National de la Recherche Agronomique  Rue de la Géraudière  BP  F- Nantes Cedex  France 《地理学报(英文版)》1991,(2)

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碳酸盐岩缝合线孔隙模拟实验     

冯伯金  D 魏永佩 《国外地质与勘测》1991,(2):42-48

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LIKELIHOOD TECHNIQUES FOR INTERLABORATORY CALIBRATION IN THE NATIONAL STREAM SURVEY     

THOMAS PERMUTT Department of Epidemiology  Preventive Medicine  University of Marylan  W.Baltimore St  Baltimore  MD  U.S.A.STEVEN D.EDLAND Biostatistics Department  University of Washington  Seattle  WA  U.S.A.MITHRA MOEZZI Department of Statistics  University of Californi  Berkeley  CA  U.S.A.STELLA C.GROSSER Division of Biostatistics  University of Californi  Los Angeles  CA  U.S.A. 《地理学报(英文版)》1991,(3)

Techniques for testing for and estimating relative bias between two laboratories are developed andapplied to a survey of the chemistry of streams in the United States.The design of the quality assuranceprogram allows estimation of linear corrections for bias as well as testing of the hypothesis of linearity,Designs of this type are useful,but improvements are suggested.  相似文献   

碱性岩浆作用,主要构造和金矿床,对绿岩带金成矿作用的含义     

Wyman.  D 《东北地质科技情报》1990,(3):61-65

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岩溶和断层体系电磁法探测的实例     

Vogel.  D 林知秋 《物探化探译丛》1990,(2):29-35

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吉林陨石钻孔样品^53Mn深度剖面     

易惟熙  欧阳自远  G.Heusser  D.Kaether  E.Pernika  W.Hampal  T.Kirsten 《地球化学》1988,(4):363-367

吉林陨石钻孔样品^53Mn深度剖面进一步表明吉林陨石经历了二阶段暴露历史，第一阶段母体经受2π宇宙射线辐照，时间约为10Ma，第二阶段母体经受4π宇宙射线辐照，时间约为0.5Ma。  相似文献   

火山组合块状硫化物矿床成因研究和地质特征概述     

朱关祥  J.M.Franklin.  J.W.Lydon.  D.F.Sangster 《地质与勘探》1983,(6)

与这两种成分有关的矿床岩性变化很大.在确定溶液源成分时,含矿母岩和与其有关的地层性质是十分重要的,这是提供一个确切的成因模式的基础.同上述两组矿床有关的一些不同的岩性特点如下: 1.火山岩和沉积岩的相对含量Cu-Zn矿床组大多数赋存在以火山岩为主的地层或火山岩派生的沉积岩不发育的地层中.如北美大多数前寒武纪矿床赋存在绿岩带以火山岩为主的岩石中.相反,芬诺斯堪的纳地盾许多前寒武纪矿床则经常分布在含有少量长英质火山岩成分的沉积岩层中.而显生  相似文献   

Assessment of urban and industrial contamination levels in the bay of Cádiz,SW Spain     

Carrasco M  López-Ramírez JA  Benavente J  López-Aguayo F  Sales D 《Marine pollution bulletin》2003,46(3):335-345

Measuring the amount of pollution is of particular importance in assessing the quality and general condition of an ecosystem. In this paper, some of the results obtained as a consequence of the specific agreement between the Environmental Agency (Consejería de Medio Ambiente, Junta de Andalucía) and the University of Cadiz to assess the environmental condition of the marine bottom and waters are showed. Physical and chemical analyses in water and sediments were undertaken at various sampling sites close to urban and industrial locations. Later on, these results were studied under statistical analysis to reveal any possible relationships between the parameters employed, and to identify any analogous behaviour between the sampling sites. Physical-chemical data revealed that sediments and waters analysed were moderately contaminated and, in addition, no great differences were found between in rising and ebbing tide conditions. Finally, considering only the pollution level, from the cluster analysis of sediments two major groups appear, one of which corresponded to those sites located in the outer bay, and the other to those situated in the inner bay. However, number 6 and 14 sampling sites cannot be associated to those groups due to be related to points with important local discharges.  相似文献