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Browsing by Title
Now showing items 9945-9964 of 38944
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(1998)The micro-inclusions located in the genetic centre of Yakutian diamond monocrystals have been studied using optical (anomalous birefringence, photoluminescence, cathodoluminescence) and microanalytical (electron-microprobe, ...
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(1997)Crystals of (Ba,Sr)CO3, Ba(SO4,CrO4), (Ba,Sr)SO4, and (Cd,Ca)CO3 solid solutions were obtained by counterdiffusion of reactants through a column of porous silica hydrogel. For each system, a set of experiments, starting ...
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(2005)Stepwise dissolutions of the carbonaceous chondrites Orgueil (CI), Murchison (CM) and Allende (CV) reveal large nucleosynthetic anomalies for Zr isotopes that contrast with the uniform compositions found in bulk meteorites. ...
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(2004)The strong uncertainty inherent in the traveltime inversion of first arrivals from surface sources is usually removed by using a priori constraints or regularization. This leads to the -space (data-independent model ...
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(2004)The total number of oil and gas pools in a province is approximated by the Weibull distribution. The statistical performances of this number are related to the parameters of a truncated Pareto distribution. The total number ...
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(2002)This paper uses the concept of anisotropic damage mechanics to analyze dynamic responses of a granite site under blasting loads. An anisotropic continuum damage model is suggested to model rock mass behavior under blasting ...
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(2002)This paper reports the second part of the study carried out by the authors on the underground explosion-induced stress wave propagation and damage in a rock mass. In the accompanying paper reporting the first part of the ...
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(2004)Evolution of the Earth's mantle from a hot initial state is modelled in the Boussinesq approximation within the framework of a thermochemical model. The spatial dynamics of substance within a spherical layer is illustrated ...
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(2004)Full-scale numerical modeling of the geodynamic evolution of the Earth throughout its existence is performed in terms of the thermochemical model of mantle convection proposed by the authors. Numerical modelling results ...
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(2004)We present finite-difference simulation results that lend new insight into the behavior of multicomponent induction logging tools when in the presence of anisotropic layers, boreholes, and invasion zones. We use four ...
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(2004)This paper deals with the numerical analyses on the effect of inhomogeneities (highly conductive layers) on the propagation of seismogenic electromagnetic signals in the ULF/ELF range. For simplicity of computations we ...
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(2000)Calculation of an 40Ar/39Ar age involves several sources of systematic (external) and statistic (mostly instrumental) errors that should be propagated into the final result for a proper statistical assessment of the age ...
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(2002)Combining a geological model with a geomechanical model, it generally turns out that the geomechanical model is built from units that are at least a 100 times larger in volume than the units of the geological model. To ...
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(1999)A one-dimensional TEM problem is solved with regard for wave processes in a nonmagnetic medium. Based on the disturbance and conjugate-equation methods, functions of the field sensitivity to model parameters (Frechet ...
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(2001)Numerical solutions by finite-difference techniques to problems of dynamical fracture growth exhibit oscillations with large amplitudes near the edges of the fractures that are caused by the stepwise advance of the edge ...
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NUMERICAL INVESTIGATION OF LAKE BED SEEPAGE PATTERNS: EFFECTS OF POROUS MEDIUM AND LAKE PROPERTIES (2001)Three-dimensional steady-state numerical models were used to investigate the relative significance of several factors controlling lake bed seepage patterns: lake depth, lake bed slope, orientation of an asymmetric lake ...
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(2003)Numerical investigations of the relationship between permeability distributions representing fracture apertures and the transport of inert and reactive solutes have been carried out. To model reactive transport, a lattice ...
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(2004)The objective of this paper is to develop a predictive numerical model able to provide indications regarding the triggering of future rock falls on the Grossgufer slope. The work involves the analysis of a previous rock ...
Now showing items 9945-9964 of 38944