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Browsing ELibrary by Title
Now showing items 10240-10259 of 22769
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(2002)Scintillation properties of a Ce-doped yttrium aluminium oxide perovskite monocrystal optically coupled to a Hamamatsu H5784 photomultiplier are analyzed with a standard bialkali photocathode for radon and radon daughters ...
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(2004)In radon mineral curative waters, according to Russian mineral water classification, the radon concentration should be greater than 185Bq/l. There are about 30 mineral waters with high levels of radon in Russia. Radon-rich ...
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RADULA, OPERCULUM AND CONTRAOPERCULUM OF THE CRETACEOUS AMMONITE ACONECERAS (MOLLUSCA, CEPHALOPODA) (1990)A ridged radula with its characteristic multiapical (5 to 11 denticles) rachidial and first and second lateral teeth has been found for the first time in ammonites. The operculum, contraoperculum and radula, which together ...
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(2002)A wind tunnel study under wind-driven rains was conducted to determine the combined effect of rain and wind on the rainsplash transport process. The rains driven by horizontal wind velocities of 6, 10 and 12 m s-1 were ...
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(2001)A disaggregation methodology for the generation of hourly data that aggregate up to given daily totals is developed. This combines a rainfall simulation model based upon the Bartlett-Lewis process with proven techniques ...
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(2005)Выделено новое семейство Ralfimartitidae, включающее четыре новых рода - Ralfimartites (с R. lautus sp. nov. и R. honoratus sp. nov.), Nolvakites (c N. laxatus sp. nov.), Rozhnovites (c R. limatus sp. nov.), Body-wskites ...
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(1999)Pressures and temperatures of the diamond source region are commonly estimated using chemical equilibria between coexisting mineral inclusions. Here we present another type of geobarometer, based on determination of the ...
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(2006)Single-crystal polarized Raman spectra (40 to 4000 cm-1 at 4 ≤ T ≤ 860 K) were measured for hemimorphite, Zn4Si2O7(OH)2.H2O, to determine the behavior of H2O molecules and OH groups in the channels. All observed stretching ...
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(2001)For many kinds of fluid inclusions, the coupling of microthermometry and Raman microspectrometry is still the only viable option to obtain compositions of single fluid inclusions. A review is given on the basis of 16 years ...
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(2003)A Raman scattering and X-ray diffraction study of the thermal decomposition of a naturally occurring, ettringite-group crystal is presented. Raman spectra, recorded with increasing temperature, indicate that the thermal ...
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(2001)Polarized single-crystal Raman scattering and powder infrared absorption spectra of Fdd2 orthorhombic natural natrolite (Na-1.88 K-0.02 Ca-0.04 )[Al-1.96 Si-3.03 O-10].2.03 H2O from Khibiny, Kola peninsula, were measured. ...
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(1995)Raman spectra were collected for barium silicate, strontium silicate and calcium silicate melts at temperatures ranging from the glass transition region to temperatures as high as 1600°C. For melts less polymrized than ...
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(2002)One well-defined OH Raman band at 3651 ± 1 cm-1 and one weak feature near 3700 ± 5 cm-1 are recognized for the hydrous γ-phase of Mg2SiO4. Like the hydrous β-phase, the H2O content in the γ-phase shifts most of the ...
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(1997)Variations in Raman spectra of phase E were investigated up to 340 kbar at room temperature and in the range 83-870 K at atmospheric pressure. Phase E appears to remain intact up to at least 870 K. However, the OH Raman ...
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(1998)One-molal solutions of potassium carbonate and potassium bicarbonate were investigated by Raman spectroscopy from 22° to 550°C and from 1000 to 2000 bar. Experiments were performed in a special hydrothermal pressure vessel ...
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(2004)Mixtures of CO2-NaCl-H2O contained in synthetic fluid inclusions are studied by laser Raman spectroscopy at high temperatures. With increasing temperature, the band splitting (X) of υ1-2υ2 diad of spectrum of CO2 presents ...
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(2002)The zeolite bikitaite, Li2[Al2Si4O12]·2H2O, has structural channels containing infinite chains of H2O molecules running parallel to [010]. One hydrogen atom of an H2O molecule is weakly hydrogen bonded to an O atom of a ...
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(2001)Raman spectra of hydrous beta-Mg2SiO4 (1.65wt% H2O) have been measured in a diamond-anvil cell with helium as a pressure-transmitting medium at room temperature to 50GPa. We observe three OH-stretching modes, a doublet ...
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(2002)Raman spectra of a single-crystal fragment of hydrous γ-Mg2SiO4, synthesized in a multianvil press, have been measured in a diamond-anvil cell with helium as pressure-transmitting medium to 56.5 GPa at room temperature. ...
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(2003)Raman spectroscopy of calcium ferrite type MgAl2O4 and CaAl2O4 and heat capacity measurement of CaAl2O4 calcium ferrite were performed. The heat-capacity of CaAl2O4 calcium ferrite measured by a differential scanning ...
Now showing items 10240-10259 of 22769