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Browsing ELibrary by Title
Now showing items 6997-7016 of 22185
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(1987)According to the model previously derived, nodules in the surface layer of sediment are formed by deposition, dehydration and crystallization of colloidal iron and manganese hydroxide on various nuclei resting on the surface ...
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(2001)A new method has been proposed for the mathematical modeling of the effective elastic constants of a geological medium with arbitrary one, two or three oriented systems of cracks. The method imposes no restrictions as to ...
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(1990)There have been many attempts at modeling hydrothermal argillization by various methods, including computer techniques. In this paper we describe the computer modeling of metasomatic clayey columns developing on rocks of ...
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(1989)The authors used computer graphics to develop models of geologic sections in areas of intersection between fold structures of different age when traces of the intersection of the axial planes of sequentially formed structures ...
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(2000)A new approach is presented for mathematical modeling of stable carbon isotope ratios in hydrocarbon gases based on both theoretical and experimental data. The kinetic model uses a set of parallel first-order gas generation ...
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(1989)Several published methods for calculating the variation in isotopic ratios in open systems involve a description of the partitioning among phases of simple ratios of the concentrations of components in coexisting phases. ...
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(2001)A new method is proposed for establishing effective thermoelastic constants as functions of pressure and temperature in rocks. The method is based on generalisation of the method of conventional moment functions, using ...
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(1996)A study of the sorption capacity of clay soils sorption capacity regarding heavy metals has made it possible to quantify the procedure for the determination of migration process parameters, and on the basis of them to make ...
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MATURITY ASSESSMENT OF OILS FROM THE SAKHALIN OIL FIELDS IN RUSSIA: PHENANTHRENE CONTENT AS A TOOL (2001)A correlation analysis of maturation parameters was carried out on 14 crude oil samples from nine oil fields on Sakhalin Island (Russia). The oils were taken from reservoir rocks of Miocene age at depths ranging from 73 ...
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(1989)The scale of manifestation of the Valday glaciation in the northern shelf zones of Eurasia continues to be controversial. This problem is of both theoretical and practical importance. It is particularly important in planning ...
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(2004)The origin of the low-angle normal faults of metamorphic core complexes has been debated for over two decades. Proponents of Andersonian fault mechanics have long argued that it is mechanically unfeasible for slip to occur ...
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(2000)A series of smectites was investigated to reveal the thickness distribution of crystallites. The Fourier decomposition technique of Bertaut-Warren-Averbach (MudMaster program) was applied to XRD reflections of <0.2 mu m, ...
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(2001)Owing to difficulties in obtaining measurements and to the vagaries of the weather at sea, few field data exist pertaining to sediment mobilisation and transport in storm conditions. Consequently, empirical formulae widely ...
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(2003)Recent studies have used the relative rotation axis of sigmoidal and spiral-shaped inclusion trails, known as Foliation Inflexion/Intersection Axis (FIA), to investigate geological processes such as fold mechanisms and ...
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(2003)The forces of interaction were measured between the siderophore azotobactin and the minerals goethite (α-FeOOH) and diaspore (α-AlOOH) in aqueous solution using force microscopy. Azotobactin, a pyoverdin-type siderophore, ...
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(2001)This study reports the first potentiometric titrations of bacterial surfaces at elevated temperatures. We used a hydrogen electrode concentration cell to examine the protonation behavior of Bacillus subtilis (an aerobic, ...
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(2004)Blum and Eberl (2004) presented a new technique for determining the surface area of clay minerals in sediment samples by measuring the amount of polyvinylpyrrolidone (PVP) [CAS#9003-39-8] adsorbed by a sample, and explained ...
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(1995)The rates at which organic macromolecules are remineralized, and variations in degradation rates with site and depth, are critical aspects in calculating the turnover of oceanic organic carbon. This work introduces a new ...
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(1995)Simultaneous measurements of compressional and shear wave velocities (VP and VS) in two rocks with identical chemistry but with different mineral assemblages were carried out from room temperature to 850°C at 1 GPa. One ...
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(1998)The thicknesses of fundamental illite particles that compose mixed-layer illite-smectite (I-S) crystals can be measured by X-ray diffraction (XRD) peak broadening techniques (Bertaut-Warren- Averbach (BWA) method and ...
Now showing items 6997-7016 of 22185