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THE SOURCE OF SULFATE IN THE FORMATION OF ETHEREAL SULFATES
Francis Binkley
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Bat guano minerals and mineralization processes in Chameau Cave, Eastern Morocco
The decay of bat guano deposits in caves produces mineral accumulations, mainly phosphates and secondary sulfates. Chameau Cave, Eastern Morocco, is located in the semi-arid Bni Snassen Mountains.
Philippe Audra+9 more
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The aim of this study was to investigate whether microbial-derived phenolic acids, 3,4-dihydroxyphenylacetic (DHPA), protocatechuic acid (PCA), and dihydrocaffeic acid (DHCFA) and their conjugated forms (DHCFA 3-O-sulfate and DHCFA 3-O-β-D-glucuronide ...
Dolores González de Llano+4 more
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Minerals of Fe in the oxidation zone of massive sulfide ore in the South Pechenga structure zone, Kola region: Identification by the Raman spectroscopy [PDF]
The paper presents data on the study of iron-bearing minerals formed in the oxidation zone of massive sulfide ores. The minerals are represented by two groups: oxides, i. e. goethite and lepidocrocite, and sulfates, i. e.
Kompanchenko A. A.+2 more
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The Soultz-Sous-Forêts geothermal site (France) operates three deep wells for electricity production. During operation, scales precipitate within the surface installation as (Ba, Sr) sulfate and (Pb, As, Sb) sulfide types.
Béatrice A. Ledésert+10 more
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Roles of Heparan Sulfate Sulfation in Dentinogenesis [PDF]
Cell surface heparan sulfate (HS) is an essential regulator of cell signaling and development. HS traps signaling molecules, like Wnt in the glycosaminoglycan side chains of HS proteoglycans (HSPGs), and regulates their functions. Endosulfatases Sulf1 and Sulf2 are secreted at the cell surface to selectively remove 6-O-sulfate groups from HSPGs ...
Hayano, S.+12 more
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The materials of the expedition of the Faculty of Geography of Moscow State University on Lake Gusinoye in August 2019 made it possible to assess the hydrological structure of the lake, the distribution of the flow of the main tributaries and wastewater ...
Anna N. Lukyanova+3 more
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Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques [PDF]
Internationally distributed organic and inorganic oxygen isotopic reference materials have been calibrated by six laboratories carrying out more than 5300 measurements using a variety of high-temperature conversion techniques (HTC) in an evaluation ...
Accoe+66 more
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The influence of ferrum (III) citrate added to the cultivation medium, on the reduction of sulfate, nitrate, and nitrite ions by sulfate-reducing bacteria Desulfovibrio desulfuricans IMV K-6, Desulfovibrio sp. Yav-6, and Desulfovibrio sp.
O. M. Moroz+2 more
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In the crystal structure of the title compound, 2C(2)H(7)N(2) (+)·SO(4) (2-), which contains four cations and two anions in the asymmetric unit, the ions are inter-connected by an extensive hydrogen-bonding system whereby two of the O atoms of sulfate ion are hydrogen-bonded to the amidinium H atoms of two cations, leading to the formation of two eight-
Zdeněk Jalový+1 more
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