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Browsing ELibrary by Title
Now showing items 1454-1473 of 21638
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(1989)The metabolic activity of bacteria in bottom sediments produces degradation of organic matter, generates new cellular biomass, liberates heat. Let us estimate the strength of this biological heat source by using data from ...
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(2001)Processes of treatment of antimony ores have been considered. Microorganisms have been utilized for separation of antimony and mercury. Results of utilization of the microorganisms have been presented. Problems in technology ...
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(1995)Microbes play an important role in the dissolution of natural and synthetic glasses. The frequent technical use of glass and the abundance of glass at the earth's surface make this process one of the most important weathering ...
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(1998)We studied the effects of biological mediation on the dissolution of basaltic glass in seawater. Experiments with typical seawater microbial populations were contrasted with a sterile control, and reactions were monitored ...
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(1996)Biophysical and biogeochemical weathering of amphibole syenite associated with the Stettin complex near Wausau, Wisconsin, has been examined by HRTEM, WDS, LM, and XRD. The rock consists of microperthitic feldspar, ...
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(2002)Lipid distributions in modern peat-forming plants were determined and compared to biomarkers recovered from a ca. 2800 year old peat deposited in a Dutch ombrotrophic bog. The peat section spans a well-constrained shift ...
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(1999)The crustose lichen Rhizocarpon geographicum weathers the Lower Devonian Shap Granite by both biomechanical and biochemical means. Biomechanical weathering is mediated by fungal hyphae that penetrate into the rock via ...
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(2000)Using the biometric dating of lamellar frequency in the last upper molars of the Archidiskodon-Mammuthus elephant lineage, the age of the Liventsovka, Sinyaya Balka, Tiraspol' (Russia), Süssenborn, Mosbach (Germany), Ilford, ...
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(2003)Calcite aggregates are mineralized in an organic poly-acrylamide hydrogel using a counter diffusion arrangement. The particles obtained show a characteristic pseudo-octahedral morphology, which is unexpected for calcite ...
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(2004)Iron(II) minerals have been found to catalyse the formation of pyrophosphate from activated phosphate compounds and inorganic phosphate at near neutral pH in water. Iron(II) phosphate catalyses the formation of pyrophosphate, ...
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(1989)The bottom waters near hydrothermal vents of the Guaymas Basin show a great increase (by a factor of 20 to 130) in the biomass of benthopelagic zooplankton, with copepods predominant. It is most probable that it is these ...
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(2002)Stratotype sections of the Asselian, Sakmarian, Artinskian, and Kungurian stages of the Cisuralian Series of the Permian System, which were studied to meet requirements of the International GSSP project, are considered. ...
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(2001)New detailed zonal scales for the Carnian and Lower Norian in northeast Russia are suggested. On the basis of ammonoids, the following have been distinguished in the Lower Carnian: Stolleyites tenuis zone, beds with ...
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(1999)The Tyumen superdeep borehole (TSB-6) drilled in north-western Siberia was the first that penetrated through Mesozoic deposits and probably entered the uppermost Paleozoic sediments. In the course of drilling, a clear ...
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(2003)Two biostratigraphic zonations, one based on macrofauna (primarily on inocerams and belemnites) and the other one based on microfossils, mostly on benthic foraminifers, are distinguished in the regional scale of the Upper ...
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(2004)Among materials of the OJSC Lukoil obtained in the northern Caspian region, there are cores samples recovered from the depth of 7 to 37 m below bottom, piston cores, and high-resolution seismic profiles. These materials ...
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(2001)Revising Frasnian radiolarians, we established three new radiolarian zones within this stage. These are the Helenifore gogoense-Retisphaera concinna Zone of the lower Frasnian, Moskovistella allbororum-Ceratoikiscum ukhtensis ...
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(2001)The regional stratigraphic scheme suggested for the marine Paleogene deposits in the West Siberian plate is based on investigation results of macro- and microfossils (foraminifers, dinoflagellales, radiolarians, diatomaceous ...
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(1993)General agreement exists that the position of the base of the Cambrian (Precambrian–Cambrian boundary) should coincide with a biostratigraphic marker that can be widely traced and is linked to the evolution of the small ...
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(2004)Acritarchs, the fossilizable, resting cysts of phytoplanktonic algal protists, are the dominant component of marine organic-walled microfossils in the Palaeozoic. The majority of acritarchs show strong similarities with ...
Now showing items 1454-1473 of 21638