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Browsing ELibrary by Title
Now showing items 9774-9793 of 22185
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(1998)Indans and tetralins are considered biological markers (biomarkers). These C9-C11 hydrocarbons are present in small amounts in organic geological samples. Methyl substituted indans or tetralins may possess a stereogenic ...
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(2002)The luminescence spectrum of a mineral contains complex information related to the intrinsic crystal and the defect structure. For quantitative analysis of cathodoluminescence (CL) the spectra have to be deconvoluted by ...
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(2001)Microfocus computer tomography is a non-destructive technique enabling virtual slicing of opaque objects. Stacking several slices enables 3D visualisation of the object. To extract quantitative information, a thorough ...
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(1999)New fire-assay and tellurium coprecipitation methods were developed for precise determination of Ru, Rh, Pd, Ir, Pt, and Au in geological samples by using ICP-MS. High recovery (>97%) of those elements was obtained by ...
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(1997)X-ray photoelectron spectroscopy (XPS) analyses of Fe(III)ΣFe were calibrated with nine single crystals of biotite of known Fe(III)ΣFe content. Peak shape parameters for the component Fe2+ and Fe3+ Fe 3p peaks were obtained ...
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(1997)X-ray photoelectron spectroscopy (XPS) was used to determine Fe(III)ΣFe in individual biotite crystals in thin sections of ten metapelites and one syenite. The in situ XPS analyses of Fe(III)ΣFe in biotite crystals in the ...
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(2001)Water speciation in hydrous aluminosilicate glasses (with NaAlSi3O8, KAlSi3O8, LiAlSi3O8 and LiAlSi4O10 compositions) was studied with infrared (IR) and static ¹H nuclear magnetic resonance (NMR) spectroscopy. Using IR ...
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(2004)The presence of an unfilled 3d electron shell in the transition metals of the first series is manifested in X-ray self-absorption effects that cause distortions in the L emission spectra. In particular, one observes peak ...
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(2004)The results of a numerical modeling carried out for physical substantiation of possible geodynamic settings during the formation of the Earth's crust in the northeastern Baltic Shield are presented. The available data on ...
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(2001)Talbot (Journal of Structural Geology 21, 1535-1551, 1999b) introduced a new model for ductile shear zones as counterflow boundaries in pseudoplastic power-law fluids, and demonstrated that natural shear zones empirically ...
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(2005)A quantitative relation between the linear attenuation coefficient (LAC) obtained by Synchrotron Radiation X-ray computed tomography (observed LAC) and the theoretically calculated LAC (theoretical LAC) of standard materials ...
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(2002)Data on 313 massive sulfide ore districts, ore fields, and individual deposits dated from the Late Archean to the present day, referred to those of Cyprus-, Urals-, Kuroko-, and Filizchai-type, and situated on all of the ...
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(2002)The effectiveness of the time reduction procedure is the critical problem for the informative contents evaluation in the high definition (HD) geomagnetic marine surveys. The use of magnetogradiometers is a good solution ...
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QUANTITATIVE LINKS BETWEEN MICROSCOPIC PROPERTIES AND VISCOSITY OF LIQUIDS IN THE SYSTEM SIO2-NA2O (2001)The Adam-Gibbs theory of structural relaxation is presented in terms of the microscopic parameters controlling viscous flow; Δμ, the energy barrier hindering rearrangement of a single silicate monomer, and z* the number ...
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(2002)Clays are the most complicated objects in quantitative mineral analysis of sedimentary rocks. Complex quantitative analysis of clays comprises four major steps: measuring bulk quantities, quantifying the mixed layering, ...
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(2001)A recent significant achievement in trace element modeling is the development of the congruent (eutectic) dynamic melting (CDM) model where only melt is generated. However, melting reactions in the mantle and crust often ...
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(1997)We examine the Tunguska Basin evolution by using two lithologic-stratigraphic sections along deep seismic sounding profiles and exploration wells. The tectonic analysis demonstrates that the subsidence of the basin was ...
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(1986)A theoretical model of clast fallout from convective eruption columns has been developed which quantifies how the maximum clast size dispersal is determined by column height and wind strength. An eruption column consists ...
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(2003)Laser-ablation ICPMS has become widely accessible as a powerful and efficient multi-element microanalytical technique. One of its key strengths is the ability to analyse a wide concentration range from major (tens of wt.%) ...
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(2002)Human societies have, in all ages, modified the original form of metals and metalloids in their living environment for their survival and technical development. In many cases, these anthropogenic activities have resulted ...
Now showing items 9774-9793 of 22185