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Browsing Геология России by Title
Now showing items 2895-2914 of 39126
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COMPARISON OF STABLE CARBON ISOTOPE RATIOS IN THE WHOLE WOOD, CELLULOSE AND LIGNIN OF OAK TREE-RINGS (2003)The stable carbon isotope ratios (δ13C) of whole wood, cellulose and acid-insoluble lignin from annual latewood increments of Quercus robur L., from modern and sub-fossil wood, were measured and their potential use as ...
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(1997)This paper compares mechanisms of the reaction of smectite to illite, in light of structural models for interstratified illite/smectite (US). The crystal structure of US has been described previously by a nonpolar and polar ...
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(2003)We compared velocities of the subsurface flow from a mounded onsite septic system towards a depressional wetland with three types of tracer; an inert gas, sulfur hexafluoride (SF6), two fluorescent dyes, fluorescein and ...
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(1997)A broad correspondence between long pollen sequences and the deep-sea oxygen isotope record has been noted for some time, but there has been little effort to explore just how similar the two types of evidence are in terms ...
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(1996)The two-dimensional cooling model of mantle convection, including core cooling was studied. The core temperature is assumed to be constant in space, but it changes with time because of the convective retrieval of heat. The ...
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(2001)The surface structure of the tetrahedral sheet of dioctahedral mica muscovite was compared to that of the tetrahedral sheet of trioctahedral mica phlogopite using atomic force microscopy (AFM). AFM revealed distinct ...
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(1997)This study compares the performance of hydride generation quartz tube atomic absorption spectrometry (HG-QTAAS) and inductively coupled plasma mass spectrometry (HG-ICP-MS) in the determination of Bi, Se and Te in 38 ...
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(2002)This paper attempts to assess the accuracy of constant eddy viscosity, Elder and k-ε turbulence models in the numerical simulation of reach-scale compound channel flows using two-dimensional (2D) finite element methods. ...
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(2002)Marine organisms must possess strategies enabling them to initiate calcite precipitation despite the unfavorable conditions for inorganic precipitation in surface seawater. These strategies are poorly understood. Here we ...
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(2001)A rainfall-runoff model is normally applied to storm events outside of the range of conditions in which it has been successfully calibrated and verified. This investigation examined the uncertainty of model output caused ...
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(2002)Similar foliation patterns are observed in faults in poorly lithified sediments, fault gouge and cataclasite, and greenschist to granulite facies shear zones. We suggest that this similarity in form reflects similar controls ...
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(2003)Flow field–flow fractionation (FlFFF) coupled to an inductively coupled plasma mass spectrometer (ICPMS) has been used to determine the chemical composition of colloids from a freshwater sample as a function of size. Organic ...
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(1999)In order to test the ability of a surface complexation approach to account for metal-bacteria interactions in near surface fluid-rock systems, we have conducted experiments that measure the extent of adsorption in mixed ...
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(1996)The competitive interactions between organic matter compounds and mineral surfaces are poorly understood, yet these interactions may play a significant role in the stability and co-transport of mineral colloids and/or ...
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(1999)The competitive sorption of Cu(II) and Pb(II) to colloidal hematite was investigated as a function of pH and total metal concentration. Acid–base titrations of the hematite and single-metal sorption experiments for Cu and ...
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(1996)Complexation of o-phthalate (1,2-benzenedicarboxylate) and competitive complexation of phosphate and phthalate at the goethite-water interface have been studied in 0.1 M Na(NO3) media at 298.2 K within the range 3.0 < -log ...
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(2003)The paper combines wavelet and entropy analysis of nonstationary drilling-ability data in order to obtain optimum information on the mechanical behavior of different geological formations. Both methods are multiscale in ...
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(1999)The phase relationships between silicate melts and hydrous fluids were studied by direct visual observation in an externally heated diamond-anvil cell. Complete miscibility of silicate melt and water was observed for a ...
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(2001)Magmas emplaced into the upper portions of the earth's crust are accompanied by extensive hydrothermal activity. Hydrothermal activity is represented as a system of coupled processes that dissipate thermal, mechanical, and ...
Now showing items 2895-2914 of 39126