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Browsing ELibrary by Title
Now showing items 10482-10501 of 21934
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(1998)Significant differences in fission-track annealing kinetics indicate that chlorapatites may give older fission-track ages and record different thermal histories to those derived from co-existing fluorapatites which have ...
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(1998)Interstratified illite-smectites (I/S) and illite-smectite-vermiculites (ISV) representing both hydrothermal and diagenetic transformations and having different degrees of structural order were investigated for cis-trans ...
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(2003)This work studies a methodology starting from georadar data that allows a semiquantitative evaluation of massive rock quality. The method is based on the concept that in good quality rock, most of the energy is transmitted, ...
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(2002)This report extends previous work (. Chlorophyll degradation during senescence and death. Organic Geochemistry 29, 1233-1251.) in which we detailed type-I (alteration) and -II (destruction) degradation of chlorophyll with ...
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(2003)The deformation of marker horizons across slip surfaces can lead to the development of several types of flanking structures. The development of such structures was investigated using a numerical model to simulate the flow ...
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(2003)A nonlinear regression method is used to calculate the hydraulic parameters of a stream-aquifer system using pumping test data. Five parameters, including the horizontal hydraulic conductivity (Kx), aquifer anisotropy (Ka), ...
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(2001)This paper reviews the basic concepts of sensitivity analysis and points out their limitations. A case is then made for logarithmic sensitivity. The magnitude of logarithmic sensitivity alone does not determine the accuracy ...
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(2002)Field-scale transport of reactive solutes depends on spatially variable physical and chemical soil properties. The quantitative importance of physical and chemical parameters required for the prediction of the field-scale ...
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(2002)The sensitivity distributions of different electrode configurations are computed for both a homogeneous resistivity distribution and a model consisting of two vertical zones of homogeneous resistivity. The inner zone around ...
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(2002)Variability with respect to model input data is recognised as a potential source of uncertainty in model predictions. The aim of this study is to estimate the sensitivity of computed values of water balance terms, in ...
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(2004)A global carbon-cycle box model forced by an ocean-general circulation model (OGCM) is used to investigate how different sea-surface reconstructions for the northern North Atlantic Ocean (Nordic Seas) for the Last Glacial ...
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(2002)Long-term carbon cycle models and independent proxies indicate that the atmospheric CO2 concentration was substantially higher in the Mesozoic and early Tertiary than now. The responses of tree growth to a high CO2 environment ...
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(2004)Clay-modified electrodes (CLMEs) have received attention in the development of electrochemical sensors and biosensors. This article reviews the use of CLME for these electroanalytical purposes. It includes an introduction ...
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(2003)The oxygen-18 signal of soil and leaf water are both recorded in heterotrophically synthesized plant stem cellulose. Presently, these signals can only be teased apart with modeling and assumptions on the nature of the ...
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(2001)In this paper, a modern image-processing technique, the Cellular Neural Network (CNN) has been firstly applied to Bouguer anomaly map of synthetic examples and then to data from the Sivas-Divrigi Akdag region. CNN is an ...
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(1989)The paper reports on studies that used models prepared by cementing a mixture of loose porous Lyuberets quartz sand and marshallite with an alcohol solution of BF-2 glue, then drying it with hot nitrogen. This procedure ...
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(2002)The exact location of planetary noble gases in meteorites remains unknown but it is inferred to be closely associated with, if not precisely some portion of, the macromolecular organic material in carbonaceous chondrites ...
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(2003)The objective-function algorithm (OFA) on the basis of hard division is presented in the paper to separate polyphase fault/slip data. The separation is made by detection of linear structures existing in the data in sigma ...
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(1988)For the first time that fractionation of U234 and U238 can occur under certain specific conditions when uranium passes from the liquid phase to the solid. It was discovered accidentally during an investigation of the ...
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(2004)The 3-month long eruption of Asama volcano in 1783 produced andesitic pumice falls, pyroclastic flows, lava flows, and constructed a cone. It is divided into six episodes on the basis of waxing and waning inferred from ...
Now showing items 10482-10501 of 21934