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Browsing by Title
Now showing items 14045-14064 of 40116
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(2001)The spectral analysis of waveforms from moderate and weak earthquakes in the Kurile-Kamchatka region allows one to rather reliably discriminate between foreshocks of forthcoming strong events and independent swarms of ...
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(1988)Analysis of these data indicates that the dependence of the main acoustic characteristics of the sediments (density and sound velocity) on depth has the form of irregular fluctuations superposed on an overall (regular) ...
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(2004)This paper deals with the spectral element modelling of seismic wave propagation on a global scale. Two aspects relevant to low-frequency studies are particularly emphasized. First, the method is generalized beyond the ...
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(1998)A collection of ground-motion recordings including accelerograms of the mainshock of the 7 December 1988, Spitak earthquake (M = 6.9, Northern Armenia) has been obtained during the 1988 to 1990 strong-ground-motion network ...
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(2003)From April 24 to May 14, 2000, the Near Earth Asteroid Rendezvous (NEAR) Shoemaker mission's near infrared spectrometer (NIS) obtained its highest resolution data of 433 Eros. High signal-to-noise ratio NIS reflectance ...
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(2002)We use a spectral-element method to simulate seismic wave propagation throughout the entire globe. The method is based upon a weak formulation of the equations of motion and combines the flexibility of a finite-element ...
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(2002)We simulate global seismic wave propagation based upon a spectral-element method. We include the full complexity of 3-D Earth models, i.e. lateral variations in compressional-wave velocity, shear-wave velocity and density, ...
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(1998)The aim of this study has been to gain insight into the aqueous chemistry of thallium at elevated temperatures and pressures as a first step towards trying to understand the association of Tl with Au, As, and Sb, which is ...
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(1998)The aim of this study has been to gain insight into the aqueous chemistry of thallium at elevated temperatures and pressures as a first step towards trying to understand the association of Tl with Au, As, and Sb, which is ...
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(2001)The aim of this study was to gain insight into the aqueous chemistry of tin at elevated temperatures and pressures. For this purpose, the spectra of chloridotin(II) complexes in the ultraviolet region were measured in acid ...
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(2001)The aim of this study was to gain insight into the aqueous chemistry of tin at elevated temperatures and pressures. For this purpose, the spectra of chloridotin(II) complexes in the ultraviolet region were measured in acid ...
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(2000)The equilibrium formation constants of manganese(II) chloride complexes have been determined spectrophotometrically in the temperature range from 25°C to 300°C at saturated water vapour pressure at chloride concentrations ...
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(2003)We have studied high-pressure inclusions (Ca-silicates, coesite, graphite) in three large diamonds, one from the Kankan district, Guinea, and the other two from the Panda kimberlite, Ekati diamond mines, Canada. Using the ...
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(2001)Optical absorption spectra (OAS) of synthetic single crystals of the solid solution spinel sensu stricto (s.s.)-magnesioferrite, Mg(Fe3+Al1 − y)2O4 (0 < y ≤ 0.3), have been measured between 12 500 and 28 500 cm-1. Chemical ...
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(2004)A meteor spectrum was recorded serendipitously at the European Southern Obrervatory (ESO) Very Large Telescope (VLT) during a long exposure in long‐slit spectroscopic mode with FORS1. The −8 magnitude fireball crossed the ...
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(2002)Monoclinic and hexagonal pyrrhotites leached in 1 mol/L HCl and exposed to the air at 100% and ∼10% relative humidity for up to 5 months were studied using X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, ...
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(2006)Dissolved organic matter (DOM) in sediment porewaters from Lake Erhai, Southwest China was investigated using dissolved organic carbon (DOC) concentration, UV absorbance, fluorescence and molecular weight distribution. DOC ...
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(2002)Raman spectra of diopside were collected from atmospheric pressure to 71 GPa. The pressure dependences of 22 modes were determined. Changes occurred in the spectra at three different pressures. First, at approximately 10 ...
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(2004)The interaction of U(VI) species with the calcite surface in pre-equilibrated calcite suspensions at pH 7.4 and 8.3 and P(CO2 ) = 10-3.5 bar was characterized in situ using extended X-ray absorption spectroscopy (EXAFS) ...
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(2006)The direct synthesis of zeolites in polluted soils has proved to be a promising process for the stabilization of metals inside these minerals. Nevertheless, more detailed information about this process is still needed in ...
Now showing items 14045-14064 of 40116