Results 1 to 10 of about 176,458 (336)

Bat guano minerals and mineralization processes in Chameau Cave, Eastern Morocco

open access: yesInternational Journal of Speleology, 2021
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
doaj   +1 more source

Activity of Microbial-Derived Phenolic Acids and Their Conjugates against LPS-Induced Damage in Neuroblastoma Cells and Macrophages

open access: yesMetabolites, 2023
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
doaj   +1 more source

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]

open access: yesVestnik MGTU, 2017
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
doaj   +1 more source

Scaling in a Geothermal Heat Exchanger at Soultz-Sous-Forêts (Upper Rhine Graben, France): A XRD and SEM-EDS Characterization of Sulfide Precipitates

open access: yesGeosciences, 2021
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
doaj   +1 more source

Roles of Heparan Sulfate Sulfation in Dentinogenesis [PDF]

open access: yesJournal of Biological Chemistry, 2012
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
openaire   +4 more sources

THE NATURAL AND ANTHROPOGENIC FACTORS’ IMPACT ON WATER QUALITY IN COOLING POOLS (THE LAKE GUSINOYE AS A STUDY CASE)

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2020
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
doaj   +1 more source

Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques [PDF]

open access: yes, 2009
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
core   +11 more sources

Reduction of sulfate, nitrate and nitrite ions by Desulfovibrio sp. under the influence of ferrum (III) citrate

open access: yesБіологічні студії, 2020
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
doaj   +1 more source

Diacetamidinium sulfate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2010
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
openaire   +3 more sources

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