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Browsing ELibrary by Title
Now showing items 9325-9344 of 21821
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(2003)General Circulation Models simulate significant changes of temperature and precipitation over Europe as part of the anthropogenic climate change. In this study, the impacts of climate change on groundwater recharge and ...
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(2001)Eleven petroleum source rock samples have been examined by Emission Fourier transform infrared spectroscopy (FTIRES) and by Rock-Eval thermal analyses. FTIRES has been used to estimate the amount of C-H aliphatic and C-H ...
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(2002)The molecular composition of oil and yield from a source rock depends on the temperature to which the source rock is subjected. However, the yield of oil and gas represents hydrocarbons generated over a range of temperatures. ...
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(2004)XRD patterns were calculated for 2M1 and 3T dioctahedral mica structural models in which trans-vacant (tv) and cis-vacant (cv) layers were interstratified and arranged, independent of octahedral cation distribution, as in ...
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(2003)The world reserves of platinum-group metals (PGM) are more than 100 000 t. They form the basis for a highly dynamic sector of the world economy, with demand continuously increasing by about 10% per year and metal prices ...
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(1996)There are increasing evidences to suggest that the composition of the outer-core is heterogeneous and consists of iron and other lighter elements. There is also some support of the likelihood for light elements to come out ...
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(1990)On the basis of available data, we have tried to identify known plutonic rocks with the material of hypothetical mantle reservoirs of basaltic and ultramafic magmas. For this purpose, we had to introduce the concept of ...
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(2001)Adequate description of interaction between ground and long bodies during their introduction or during seismic action is necessary for providing the good functioning of various structures. Such description is possible with ...
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(2003)Fluoride replacement of oxygens in the GaO4Al12(OH)24(H2O)127+(aq) molecule [GaAl12] was studied via 19F nuclear magnetic resonance (NMR) at 4 < pH < 5 and 278 K in order to elucidate similar reactions at the surfaces of ...
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(1998)A potentiometric method was used to determine the formation quotients for aluminum-malonate (Al(Ma)y3-2y, Ma = CH2(CO2)22-) complexes from 5 to 75°C at four ionic strengths from 0.1 to 1.0 molal in aqueous NaCl media. Two ...
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(2000)The molal formation quotients of cadmium-acetate complexes were measured potentiometrically (hydrogen-electrode concentration cell) from 50 to 250°C at ionic strengths of 0.1, 0.3, and 1.0 molal in aqueous sodium ...
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(2000)The stability of aqueous complexes formed by gadolinium (Gd3+) and ytterbium (Yb3+) aqueous species with the acetate ion (AcO-) was investigated at 25°C, 40°C, 60°C and 80°C, and saturated vapor pressure, using potentiometric ...
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(2004)Power spectrum of the diurnal variations of the quasi-electrostatic field Ez in the near-Earth atmosphere have been presented for the first time. The Ez power spectrum variations in the period of fine weather have been ...
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(2003)Power attenuation laws were originally introduced for phenomenological descriptions of attenuation in a large variety of materials. More recently they have been applied in viscoelastic inversion. Power-law models can be ...
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(2005)In the past two decades, active seismology studies in Russia have made use of powerful (40- and 100-ton) low-frequency vibrators. These sources create a force amplitude of up to 100 tons and function in the 1.5-3, 3-6, and ...
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(2004)PP-P differential traveltime data are useful for constraining the seismic structure of the upper mantle. The cross-correlation method has been used for these measurements, whereby a synthetic PP waveform is constructed ...
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(2001)During the past decade, the Bayesian maximum entropy (BME) approach has been used with considerable success in a variety of geostatistical applications, including the spatiotemporal analysis and estimation of multivariate ...
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(1989)Two pyrolysis-gas chromatography (Py-GC) techniques were used to gain a succinct perspective of kerogen composition and structure which, by comparison with (13C NMR data, appears to be representative of the kerogen structure ...
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(2003)Transverse isotropy (TI) with a vertical symmetry axis (VTI) often provides an appropriate earth model for prestack imaging of steep-dip reflection seismic data. Exact P-wave and SV-wave phase velocities in VTI media are ...
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(2000)The Timan biota from Russia and Huainan biota from China proved the pre-Ediacarian Metazoa did exist in the past. In Russia, the genus Parmia Gnilovskaya of the pre-Ediacarian annelidomorphs, whose construction has distinct ...
Now showing items 9325-9344 of 21821