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Browsing ELibrary by Title
Now showing items 10017-10036 of 26297
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(2002)The lipids of the Gram-negative marine bacterium Marinobacter hydrocarbonoclasticus, cultivated in synthetic seawater on a single carbon source, acetate or n-icosane, were isolated, purified and their structures determined. ...
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(1998)Soluble Fe(II) is an important reductant in anoxic surficial fluids, due to fast redox kinetics of the Fe(II)/Fe(III) couple. However, its availability is limited in neutral and alkaline pH range by the solubility of FeS(s), ...
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(1996)The Yanzhuang meteorite was severely shocked and reheated in an extraterrestrial impact event; it consists of four shock facies characteristic of disequilibrium shock effects. This study reveals that the volatile element ...
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(2006)Interaction between slab-derived melt and mantle peridotite and the role of slab melt as a metasomatizing agent in the sub-arc mantle is being increasingly recognized. Adakite, the slab melt erupted on the surface, usually ...
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(2004)Na K-edge X ray absorption near-edge structure (XANES) spectra for minerals and glasses were collected using synchrotron radiation. Na-K XANES is a good structural probe to determine the coordination state of this element ...
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(1998)Na-K chemical interdiffusion between albite and orthoclase melts has been measured at 1.0 GPa between 800 and 1600°C and at 2.0 GPa, 1400°C, in anhydrous melts and in hydrous, 5.5 wt% H2O, melts at 1.0 GPa, 1200 and 1400°C. ...
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(1991)Carbonate phases, some rich in Na2O and comparatively rich in SrO and BaO, occur as inclusions in perovskite and calzirtite (Ca2Zr5Ti2O16) in the carbonatite of the Guli complex, Siberia. This is the first record of alkali ...
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(2006)The shell of Naefia neogaeia Wetzel, 1930 from the Maastrichtian of Chile is revised and compared with other Cretaceous taxa placed in the Groenlandibelidae. Naefia differs from these species by the absence of a rostrum ...
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(2004)Методом залечивания трещин синтезированы флюидные включения в кварце при давлении 2 кбар и температурах 500, 700, 750 и 800°С из растворов, содержащих фторид (± хлорид) натрия. Для фторида натрия характерно наличие критических ...
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(1996)Nafertisite, (Na,K)(3)(Fe2+,Fe3+,square)(10)[Ti-2(Si,Fe3+,Al)(12)O-37](OH,O)(6), is an alkaline titanosilicate from the Khibina massif (Kola Peninsula, Russia). It is monoclinic A2/m with a = 5.353(4), b = 16.176(12), c = ...
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(2005)A new category of “named amphiboles” whose names can be published without previous approval by the IMA-CNMMN, is now recognized by the IMA-CNMMN, so long as the names agree with the IMA-CNMMN-approved system of amphibole ...
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(2004)The IMA-CNMMN has now recognized a new category of names, "named amphiboles", which can be published without its previous approval, so long as the names agree with its system of amphibole nomenclature. Generally in these ...
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(1997)A detailed study of the Paleogene terrigenous-tuffogenic beds on Kronotskii Peninsula, Govena Peninsula, and in Karaginskii Island and the Komandor Islands has revealed several levels of nannoplankton occurrences, which ...
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(2000)An olivine grain from peridotite nodule 9206 (Udachnaya kimberlite) was heated in air at 700°C for 9 h. It was investigated by EMPA, by IR and UV spectroscopy and by TEM. The TEM examination reveals hexagon-like inclusions ...
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(2005)Olivine grains from an ilmenite–garnet–peridotite nodule from the kimberlite pipe Udachnaya–Wostotschnaya, Siberia have been investigated by TEM methods (electron diffraction, HREM, AEM, EELS). The nodule is a high-temperature ...
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(2001)An understanding of first-order pressure-induced structural transitions is relevant to many research areas in geological and planetary sciences because it involves the study of materials exposed to high pressures. For ...
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(2001)Controversy surrounds the interpretation of various nano-phenomena as being living organisms. Incubation of fetal bovine serum under standard cell culture conditions results in the formation of free entities in solution, ...
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(2003)Nanopores are ubiquitous in porous geologic media and may account for >90% of total mineral surface areas. Surface chemistry, ion sorption, and the related geochemical reactions within nanopores can be significantly modified ...
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(2003)Iron oxides affect many elemental cycles in aquatic sediments via numerous redox reactions and their large sorption capacities for phosphate and trace elements. The reactive ferric oxides and oxyhydroxides are usually ...
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(2004)The effects of electron-beam damage on the Fe3+/ΣFe (total iron) ratio were measured by electron energy-loss spectroscopy (EELS) with a transmission electron microscope (TEM). Spectra were acquired from crushed and ...
Now showing items 10017-10036 of 26297