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Now showing items 16222-16241 of 39124
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(2005)The main magnetic field of the Earth is generated and maintained by convective motions in the fluid outer core. Temporal field variations occur on an impressive variety of scales, ranging from months to millions of years. ...
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(2000)High precision trace element data are reported for representative samples of the upper continental crust: 11 loess samples and 22 shale samples (PAAS) previously used by Taylor and McLennan to define the rare earth element ...
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(2004)On the basis of the analyzed long-term dynamics of various resources consumption, the equilibrium trajectory of resource-using evolution was constructed. Revealed are the reasons, making this trajectory unacceptable by ...
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(2003)The sounding problem of 1-D layered media has been solved with wave energy transfer equations. Forward and backward wave propagation at any trajectory point are calculated. Analytical solutions for simple trajectories are ...
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(2004)In order to study earthquake-related ULF geomagnetic field changes, it is important to discriminate the noises such as magnetic pulsations originated from solar–terrestrial interactions and artificial noises from DC-driven ...
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(2003)The transport of particle-associated bacteria during rain events in karst waters has been investigated. In this aim, we studied the correlations between water turbidity and enumerations of sessile (attached) and planktonic ...
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(2001)A new model is proposed to numerically simulate transfer of melt between microscopic pores and macroscopic veins in a deforming porous matrix. Matrix rheology is assumed to be visco-elastic. Darcy flow of porous melt through ...
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(2001)Interambularcral plates of echinoid Heterocentrotus trigonarius, composed of Mg calcite 1 (~14 mol% MgCO3), were heated in three timed series of experiments at 300°C. Dried plate fragments and fragments with added water ...
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(2004)Samples of Recent–Miocene fish and marine mammal bones from the bottom of the Atlantic and Pacific oceans and Miocene Maikop deposits (Transcaspian region) are studied by the X-ray diffraction (XRD) technique combined with ...
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(2004)Trend modelling is an important part of natural resource characterization. A common approach to account for a variable with a trend is to decompose it into a relatively smoothly varying trend and a more variable residual ...
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(2003)We investigate a transformation of magnetic trans- fer functions into the tangential-electric mode part of the impedance tensor in the scope of the plane-wave electromagnetic tensor-VLF method. The transforma- tion, which ...
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(2001)Based on the seismostratigraphic analysis and geological interpretation of seismic profiling data, three marker surfaces corresponding to structural unconformities and erosion events are defined in the area of the Danube ...
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(1998)Three main stages related to major transgressive-regressive cycles of the development are recognized in the Late Cenozoic history of the Arctic Ocean: the Miocene-early Pliocene (regressive), late Pliocene-Eopleistocene ...
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(2004)We present an experimental investigation on the dissolution of uniaxially stressed crystals of NaClO3 in contact with brine. The crystals are immersed in a saturated fluid, stressed vertically by a piston and monitored ...
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(2003)A closed-form asymptotic solution is derived for the magnetic field of the currents induced by a transient airborne magnetic source in a conductive layer of finite thickness. The conductive layer rests on top of a resistive ...
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(1998)Flash heating simulation experiments have been performed to determine the effects of heating time, cooling rate, ambient gas fO2, and the sample bulk composition on the extent of Na loss of silicate melts and the implications ...
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TRANSIENT PHENOMENA IN VESICULAR LAVA FLOWS BASED ON LABORATORY EXPERIMENTS WITH ANALOGUE MATERIALS (2004)Realistic lava flow models require a comprehensive understanding of the rheological properties of lava under a range of stress conditions. Previous measurements have shown that at typical eruption temperatures lavas are ...
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(2003)The ultrafast transient photoluminescence of impact silica-rich glasses and nanostructured opals is investigated at the (sub)nanosecond time scale. Spectral and temporal data were acquired with a high-resolution streak ...
Now showing items 16222-16241 of 39124