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Browsing ELibrary by Title
Now showing items 1937-1956 of 21934
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(2002)Natural melanite garnets from carbonatitic rocks have been studied by a multitechnique approach based on both experimental (chemical, diffractometric and spectroscopic) methods and full-multiple scattering calculations of ...
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(2000)We have measured U(VI) adsorption on hematite using EXAFS spectroscopy and electrophoresis under conditions relevant to surface waters and aquifers (0.01 to 10 μM dissolved uranium concentrations, in equilibrium with air, ...
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(2004)Raman spectroscopy was used to analyze quantitatively water in silicate glasses and melt inclusions and to monitor H2O–OH speciation. Calibration is based on synthetic glasses with various water contents (0.02–7.67% H2O); ...
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(2000)The core-shell Y2O3:Eu3+/polystyrene particles was prepared by surface modification with citric acid and emulsion polymerization method of styrene. The DTA curve of coated particles exhibits a small and wide exothermic ...
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CHARACTERIZING CLAY MINERAL SUSPENSIONS USING ACOUSTIC AND ELECTROACOUSTIC SPECTROSCOPY - A REVIEW (2004)Recently, significant advances have been made in the theory and application of acoustic and electroacoustic spectroscopies for measuring the particle-size distribution (PSD) and zeta potential (ζ potential) of colloidal ...
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(2002)Soil organic matter (SOM) of five soil horizons from Arctic tundra and one soil horizon from a temperate region was separated into an extractable fraction (EF) and a non-extractable fraction (NEF) by dilute alkali. The ...
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(2003)The multi-tracer test method was used to investigate the impact of diffusion-mediated mass-transfer processes associated with physical heterogeneity on solute transport in sedimentary aquifer systems at different scales. ...
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(2000)The environmental scanning electron microscope (ESEM) allows high-resolution, high-magnification imaging of conductivity differences in uncoated geological samples. Under normal ESEM operating conditions, negative charge ...
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(2002)Electrical resistivity changes, ground potentials, electromagnetic (EM), and luminous signals preceding or accompanying earthquakes have been reported many times, in addition to ground uplift and tilt and other parameters. ...
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(2003)An ab initio Hartree–Fock study of spodumene structure has been performed, and the wave function was used for a topological analysis of the electron density. The three non-equivalent oxygen atoms (O1, O2 and O3) of spodumene ...
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(2001)The name Charliella is proposed for a new biseriam-minid genus characterized by a four-layered wall that I thickens along the anterior side of the septa and partially occludes the chamber cavity. Charliella rossae was ...
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(2003)Relative chemical abundances of 13 meteoroids were determined by averaging the composition of the radiating gas along the fireball path that originated during their penetration into the Earth's atmosphere. Mg, Fe, Ni, Cr, ...
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(2001)Chemical and carbon isotope instabilities are characterized in the gryphon gases of the following mud volcanoes: Kipyashchii Bugor (southwestern Turkmenistan), Dashgil' (Shemakha-Kobystan mud volcanic region of Azerbaijan), ...
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(1989)Mud volcanoes occupy a special place among natural phenomena. First, in terms of the scale of discharges of carbonaceous gases from them, the acute stage of their eruption is comparable to surface lava eruptions from cone ...
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(2004)The chemical and isotopic composition of fumarolic gases emitted from Nisyros Volcano, Greece, and of a single gas sample from Vesuvio, Italy, was investigated in order to determine the origin of methane (CH4) within two ...
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(2001)A synthetic material with solar elemental proportions of iron, magnesium, silicon, titanium, calcium, and aluminum oxides and doped with rare earth elements was evaporated in a vacuum furnace at 1800 and 2000°C for different ...
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(2001)A kinetic model for evaporation of a multi-component condensed phase with a fixed rate constant of the reaction is developed. A binary system with two isotopes for one of the components undergoing simple thermal histories ...
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(1997)Soluble and insoluble constituents of modern and ancient (ca. 600 AD) desiccated barley kernels and radish seeds have been studied using high-temperature gas chromatography-mass spectrometry, scanning electron microscopy, ...
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(1998)The utility of the geochemistry of basaltic suites as probes of mantle processes is encumbered by the processing those magmas undergo during transport from the field of melting to the ocean floor. Melt inclusions provide ...
Now showing items 1937-1956 of 21934