Results 21 to 30 of about 608,326 (393)
Applied Sciences, 2021 This paper presents experimental and analytical work of which the main objective was to support the introduction of a new technology for the production of sewer pipes. In this technology, the pipes produced consist of two differently produced parts.
Ivailo Terzijski +5 more
doaj +1 more source
Thermochemistry of yavapaiite KFe(SO4)2: Formation and decomposition [PDF]
, 2005 Yavapaiite, KFe(SO4)2, is a rare mineral in nature, but its structure is considered as a reference for many synthetic compounds in the alum supergroup. Several authors mention the formation of yavapaiite by heating potassium jarosite above ca. 400°C. To
Drouet, Christophe +2 more
core +2 more sources
Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]
, 2014 Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum +5 more
core +3 more sources
工程科学学报, 2016 Simulation experiment was performed on the performance of concrete exposed to sulfate attack and dry-wet cycles. Changes in ultrasonic velocity and acoustic emission activities for concrete at different erosion periods were tested by uniaxial compression
LIU Juan-hong +3 more
doaj +1 more source
Acta Crystallographica Section E Structure Reports Online, 2008 In the title compound, C(3)H(8)N(6) (2+)·SO(4) (2-), the melaminium cations and sulfate anions are inter-connected by N-H⋯N and N-H⋯O hydrogen bonds, forming a layer in the (101) plane. The layers are connected through multiple hydrogen bonds and π-π stacking inter-actions (centroid-centroid distance of about 3.4 Å).
Hai-Peng Jing +2 more
openaire +3 more sources
Nanoscale Infrared Imaging Analysis of Carbonaceous Chondrites to Understand Organic-Mineral Interactions During Aqueous Alteration [PDF]
, 2019 Organic matter in carbonaceous chondrites is distributed in fine-grained matrix. To understand pre- and postaccretion history of organic matter and its association with surrounding minerals, microscopic techniques are mandatory.
Baden, Naoki +6 more
core +2 more sources
The thermal decomposition of potassium and sodium-pyrosulfate [PDF]
, 1969 Proceeding from KHSO4, K2S2O8, NaHSO4 and Na2S2O8, potassium- and sodium-pyrosulfates were prepared and their thermal decomposition was investigated by a T.G.A. method. This was done in order to clarify contradictory values found in the literature.
Gellings, P.J., Vries, K.J. de
core +2 more sources
Structural complexity of natural uranyl sulfates.
Acta Crystallographica. Section B: Structural Science, Crystal Engineering and Materials, 2019 Uranyl sulfates, including those occurring in Nature (∼40 known members), possess particularly interesting structures. They exhibit a great dimensional and topological diversity of structures: from those based upon clusters of polyhedra to layered ...
V. Gurzhiy, J. Plášil
semanticscholar +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. +12 more
openaire +3 more sources
Lamellarin Sulfates from the Pacific Tunicate Didemnum ternerratum.
Journal of Natural Products, 2019 Six new lamellarin sulfates (1-6) were isolated from the methanolic extract of the Pacific tunicate Didemnum ternerratum, collected from the Kingdom of Tonga.
J. Bracegirdle +7 more
semanticscholar +1 more source