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Browsing ELibrary by Title
Now showing items 1185-1204 of 21879
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(2002)Petroleum geochemistry improves exploration efficiency by accounting for many of the variables that control the volumes of crude oil and natural gas available for entrapment, including source-rock distribution, richness ...
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(1997)New analytical techniques are utilized that permit the precise and accurate measurement of Pt-190-Os-186 isotope systematics. These techniques are applied to three different systems: sulfide ores associated with the 251.2 ...
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(1989)In many applications (geophysics, acoustics, or tomography) one encounters integral transformations. In geophysical applications, the transformation describes numerous procedures for time-shifted stacking of seismograms ...
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(1988)Diffusion and reactions involving the breakdown of formation of chemical compounds are closely similar in their kinetics. The main idea of the theory of absolute reaction rates is presented. The theory is in satisfactory ...
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(2003)X-ray computed tomography (CT) is a non-destructive technique with wide applications in various geological disciplines. It reveals the internal structure of objects, determined by variations in density and atomic composition. ...
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(2004)A basic theoretical understanding of stable isotope fractionations can help researczzzhers plan and interpret both laboratory experiments and measurements on natural samples. The goal of this chapter is to provide an ...
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(2004)Uranium(VI) adsorption onto aquifer sediments was studied in batch experiments as a function of pH and U(VI) and dissolved carbonate concentrations in artificial groundwater solutions. The sediments were collected from an ...
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(1999)Since no abstract was given for this paper, its subject matter can be derived from the headings given below: Introduction 1. The brief characteristics of the classical theory available for regularizing the systems of linear ...
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(1999)The abstract of this paper was not submitted. It is the continuation of paper "Approximation approach to the solution of gravity and magnetic problems. 1. The regularization of the systems of linear algebraic equations as ...
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(2004)Volgian aptychi from the Russian Platform are described and figured for the first time. The Lower Volgian klimovi Zone and the uppermost Kimmeridgian beds contain Lamellaptychus submortilleti Trauth, 1938. The pseudoscythica ...
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(2004)Evident from the presented results, Riphean sedimentary rocks similar to the experimental ones may generate, in the course of natural OM maturation, approximately 40 kg/t of liquid and 50 kg/t of gaseous hydrocarbons ...
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(1995)The petrological and mineralogical characteristics of the unusual CM2 chondrite, Bells, have been investigated in detail by scanning electron microscopy (SEM), electron microprobe analysis (EPMA), and transmission electron ...
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(2001)ALH 81002 is a CM carbonaceous chondrite that has petrographic characteristics suggesting that it experienced a high degree of aqueous alteration, but has entirely escaped parent body brecciation. In this study, we report ...
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(2003)Uptake of cadmium ions from solution by a natural Mg-containing calcite was investigated in stirred flow-through reactor experiments. Input NaCl solutions were pre-equilibrated with calcite (pH 8.0) or not (pH 6.0), prior ...
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(1997)The subsurface mobility of metals and polychlorinated phenols occurring together in contaminated groundwaters may be significantly affected by the extent of aqueous complexation between them. However, no previous experimental ...
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(2002)The effect of pressure and temperature on the dihedral angles of aqueous fluid in a pyrope matrix was investigated. Experiments were performed on an H2O-pyrope system in a multianvil apparatus over the pressure and temperature ...
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(1997)Aqueous geochemical techniques and analysis of pyrite surfaces have been used to study element partitioning between the aqueous and solid phase and to infer mechanisms that limit the concentrations of elements in porewater ...
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(2001)Organic matter, water, and minerals coexist at elevated temperatures and pressures in sedimentary basins and participate in a wide range of geochemical processes that includes the generation of oil and natural gas. A series ...
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(1993)Hydrothermal systems associated with oceanic spreading centers are now recognized as relatively common phenomena, and the organic chemical alterations occurring there are rapid and efficient. In the marine hydrothermal ...
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(2001)The solubility of boehmite, γ-AlOOH, was measured in a modified hydrogen-electrode concentration cell, which provided continuous in situ measurements of hydrogen ion molality over the range of ionic strengths from 0.1 to ...
Now showing items 1185-1204 of 21879