Results 11 to 20 of about 589,999 (404)

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]

Vestnik 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., Voloshin A. V., Sidorov M. Yu   +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

Geosciences, 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, Ronan L. Hébert, Justine Mouchot, Clio Bosia, Guillaume Ravier, Olivier Seibel, Éléonore Dalmais, Mariannick Ledésert, Ghislain Trullenque, Xavier Sengelen, Albert Genter   +10 more
doaj   +1 more source

Roles of Heparan Sulfate Sulfation in Dentinogenesis [PDF]

Journal 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., Kurosaka, H., Yanagita, T., Kalus, Ina, Milz, Fabian, Ishihara, Y., Nururu, M. N., Kawanabe, N., Saito, M., Kamioka, H., Adachi, T., Dierks, Thomas, Yamashiro, T.   +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)

Водное 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, Olga N. Lukyanova, Ludmila Y. Yefimova, Vasiliy A. Yefimov   +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]

, 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, Bao, Barkan, Belcher, Belcher, Benson, Bircumshaw, Boettger, Boschetti, Brand, Brand, Brotherton, Böhlke, Coplen, Coplen, Coplen, Coplen, Coplen, Crowley, Dennis, Epstein, Farquhar, Farquhar, Gehre, Gehre, Gonfiantini, Gonfiantini, Halas, Hannon, Hayes, Hoshino, Johnston, Kornexl, Kornexl, Kornexl, Koziet, Kroopnic, Lang, Luz, Maltsev, Meijer, Meyer, Meyer, Muller, Murphy, Olsen, Pella, Revesz, Santrock, Santrock, Schmidt, Schuetze, Stalker, Sternberg, Sternberg, Sternberg, Sternberg, Stuart-Williams, Unterzaucher, Unterzaucher, Unterzaucher, van Hook, Wedeking, Werner, Werner, Werner, Werner   +66 more
core   +11 more sources

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

Біологічні 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, S. O. Hnatush, G. V. Yavorska   +2 more
doaj   +1 more source

Heterogeneous Hydroxyl Radical Oxidation of Isoprene-Epoxydiol-Derived Methyltetrol Sulfates: Plausible Formation Mechanisms of Previously Unexplained Organosulfates in Ambient Fine Aerosols

Environmental Science and Technology Letters, 2020
Methyltetrol sulfates are unique tracers for secondary organic aerosol (SOA) formed from acid-driven multiphase chemistry of isoprene-derived epoxydiols.
Yuzhi Chen, Yue Zhang, A. Lambe, R. Xu, Ziying Lei, Nicole E. Olson, Zhenfa Zhang, Tessa Szalkowski, T. Cui, W. Vizuete, A. Gold, B. Turpin, A. Ault, M. Chan, J. Surratt   +14 more
semanticscholar   +1 more source

Diacetamidinium sulfate [PDF]

Acta 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, Aleš Růžička   +1 more
openaire   +3 more sources

Cholesterol and oxysterol sulfates: Pathophysiological roles and analytical challenges

British Journal of Pharmacology, 2020
Cholesterol and oxysterol sulfates are important regulators of lipid metabolism, inflammation, cell apoptosis, and cell survival. Among the sulfate‐based lipids, cholesterol sulfate (CS) is the most studied lipid both quantitatively and functionally ...
L. Sanchez, Lorenzo Pontini, M. Marinozzi, L. Sanchez-Aranguren, Ana Reis, I. Dias   +5 more
semanticscholar   +1 more source

Mechanisms formation of electron-hole trap centers in LiKSO4 crystall

Eurasian Journal of Physics and Functional Materials, 2021
The mechanisms of creation of electron-hole trapping centers in LiKSO4 have been investigated by the methods of vacuum and thermal activation spectroscopy.
T.N. Nurakhmetov, Zh.M. Salikhodzha, A.M. Zhunusbekov, A.Zh. Kainarbay, D.H. Daurenbekov, T.T. Alibay, B.M. Sadykova, K.B. Zhangylyssov, B.N. Yussupbekova, D.A. Tolekov   +9 more
doaj   +1 more source