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Now showing items 13882-13901 of 39377
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(2003)We have examined alkaline sulfidic (0.5-0.005 M NaHS-) aqueous solutions of Hg(II)-S complexes [2.8-0.28 mM Hg(II)] using extended X-ray absorption fine structure (EXAFS) and an especially designed spectroscopic cell. The ...
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(1997)Synthetic Na-rich birnessite (NaBi) and its low pH form, hexagonal birnessite (HBi), were studied by X-ray and selected-area electron diffraction (XRD, SAED). SAED patterns were also obtained for synthetic Sr-exchanged ...
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(1997)Solution chemical techniques were used to study the conversion of synthetic Na-rich buserite (NaBu) to hexagonal (H 1 -exchanged) birnessite (HBi) at low pH. The low-pH reaction is broadly characterized by the exchange of ...
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(2002)The structure of a synthetic analogue of sodium birnessite (NaBi) was studied by powder X-ray diffraction (XRD). It is shown that NaBi has a one-layer triclinic structure with sub-cell parameters aP = 2.9513(4) Ä, bP = ...
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(2005)We report reprocessed aftershock data from the Ms = 7.3 Chuya earthquake of 27 September 2003. The new approach we suggest implies location of hypocenters using a tomography-based velocity model followed by double-difference ...
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(1992)Seismic, geothermal, petrological and other data collected during the joint Soviet-Chinese-Japanese Project “Geotraverse: Pacific-China plain” are highly contradictory concerning their information on back-arc basins. The ...
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(2002)2-D P-wave velocity models of the crust along DSS profiles have been used together with 2-D seismic tomography for constructing maps of the Moho topography and average P-wave velocity in the crust in Baikal rift zone (BRZ) ...
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(2003)The structure of the crystalline crust (CC) and the mantle was studied to a depth of 700 km by seismograms of chemical and nuclear explosions under kimberlite and oil and gas fields. Both types of fields are located in ...
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(1990)The Alpine belt of Southeast Asia lies between the Tarim, Bayshan-Alashan and Ordos blocks of the Sino-Korean craton in the north, the Yangtze craton and the Indochinese massif in the east and the Indian craton in the ...
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(2004)A complete understanding of the surface chemistry of the apatite-water system requires direct observation of the interfacial structure at the molecular scale. We report results for the structure of the apatite (100)-water ...
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(2004)The Urals orogen includes a paleocontinental and a paleo-island arc segments. The paleo-island arc segment of the eastern Urals consists of two major island-arc terrains of different ages: the Tagil terrain in the northern ...
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(2004)The present study was undertaken with the objective of deriving constraints from available geological and geophysical data for understanding the tectonic setting and processes controlling the evolution of the southern ...
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(1990)The Mongolian-Siberian mountainous province distinguished by Florensov (1978) includes the Sayan-Baikal, the Altai-Sayan regions and East Mongolian high ranges, and those of Mongolian Altai, Goby Altai and Khangai. In the ...
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(PANGAEA, 2011-10-30)The structure and distribution of the macrobenthic communities were studied in the southwestern Kara Sea. The material was collected in Baidaratskaya Bay in July 2007 and in a section running westward of the Yamal Peninsula ...
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STRUCTURE OF THE ORTHOCLASE (001)- AND (010)-WATER INTERFACES BY HIGH-RESOLUTION X-RAY REFLECTIVITY (2003)High-resolution in situ X-ray specular reflectivity was used to measure the structures of orthoclase (001) and (010) cleavage surfaces in contact with deionized water at 25°C. X-ray reflectivity data demonstrate a high ...
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STRUCTURE OF THE PALEOZOIC ALKALINE-ULTRABASIC INTRUSIONS OF THE KOLA PENINSULA BY GRAVIMETRIC DATA (1998)Study of the deep structure of the Paleozoic carbonatite complexes of the Kola province has been performed using the original 3D density modeling method based on gravity survey data. Analysis of intrusion models from depths ...
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(2003)In recent years, new material on the structure of the loess strata of the southern part of Western Siberia has been acquired. To date, more than 100 loess-soil sections have been studied and all pertinent published materials ...
Now showing items 13882-13901 of 39377