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Browsing ELibrary by Title
Now showing items 1039-1058 of 21934
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(2003)Based on experimental observations and theoretical analyses, the author introduces an ideal microcrack model in which an array of cracks with the same shape and initial size is distributed evenly in rocks. The mechanism ...
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(2003)The aim of analogue model experiments in geology is to simulate structures in nature under specific imposed boundary conditions using materials whose rheological properties are similar to those of rocks in nature. In the ...
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(2001)An inverse Monte Carlo (MC) method was developed to determine the distribution of octahedral cations (Al3+, Fe3+, and Mg2+) in bentonite illite–smectite (I–S) samples (dioctahedral 2:1 phyllosilicates) using FT–IR and 27Al ...
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(2003)The results of the study of cores from the Nyurol'skaya Basin with electron paramagnetic resonance (EPR) are discussed. Judging from relationship between the V and C concentrations in the cores, the rocks are composed of ...
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(2001)Cyclodextrin GC stationary phases, well documented for their superior isomeric separation capabilities, have been investigated in the separation of crocetane (2,6,11,15-tetramethylhexadecane) and phytane (2,6,10,14-tetra ...
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(2003)Two methods have been developed in this paper to model the strain state and the layer geometry of folds. These methods analyse the superposition of strain patterns due to layer shortening, tangential longitudinal strain, ...
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(2004)This paper presents relative secular variations of the total intensity of the geomagnetic field against a background of results of magnetic anomaly interpretation along seismic profile P4. Profile P4 crosses a Variscan ...
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(2002)A critical problem for conducting quantitative analysis of individual fluid inclusions using Synchrotron X-Ray Fluorescence (SXRF) technique relates to the standardization and the calibration of the X-ray spectra. In this ...
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(2002)The acquisition of isothermal remanent magnetization (IRM) curves through the application of stepwise-increasing uniaxial fields to a rock-magnetic sample provides an important non-destructive tool for the investigation ...
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(2001)The discovery of hydrocarbon reservoirs in Upper Jurassic sediments in the central part of the Krasnoleninsk arch required stratification of these deposits and separation of its oil reservoirs; correlation of their sections ...
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(2004)Data from studies of dissimilatory bacterial (108 cells mL−1 of Shewanella putrefaciens strain CN32, pH 6.8) and ascorbate (10 mM, pH 3.0) reduction of two synthetic Fe(III) oxide coated sands and three natural Fe(III) ...
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(2003)The 1167 published cooling unit (CU) palaeointensity estimates contained in the 400–10 Ma portion of the PINT global database were rigorously filtered according to accurate age determinations, palaeodirectional reliability, ...
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(2002)The NiS fire assay-Te coprecipitation separation procedure for inductively coupled plasma mass spectrometry (ICP-MS) analyses of platinum-group elements (PGE) in silicate rocks has been revisited with the aim of reducing ...
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(1995)Detailed potentiometric titration data were collected for a purified peat humic acid (PPHA) over a range of pH (pH 3.5-10.5) and KNO3 background electrolyte concentrations (0.001-0.3 M). The data were analyzed following ...
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(2003)This paper presents analytical solutions that can be used to evaluate stream infiltration and baseflow reduction induced by groundwater pumping in nearby aquifers. Critical time, infiltration reach, and travel times can ...
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(1997)Separation and determination of reduced inorganic sulfur are important in many ecological and geological studies. Both distillation and diffusion methods can effectively separate acid-volatile sulfide (AVS), chromium(II)-reducible ...
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(2001)We analyze the dynamics (amplitudes and phase distortions) of seismic waves as they propagate along the ray. Our analysis is performed via a ray series approximation in the time domain. That is, we concentrate on characterizing ...
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(2002)Ferric minerals are commonly found in soils and sediments, especially in tropical areas. Previous studies have shown that ferric minerals in sediments can cause underestimation of acid-volatile sulfides (AVS). No reliable ...
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(2002)Potential matrix effects in the sulfur isotopic analysis of whole rocks by elemental analyzer-continuous-flow isotope ratio mass spectrometry (EA-CFIRMS) have been investigated by measuring mixtures of a well-calibrated ...
Now showing items 1039-1058 of 21934