Formation of antibiotic cycloserine complexes with stearic acid and its calcium and magnesium salts: from quantum mechanical modeling to studies of membranotropic action

2019 ◽  
Vol 26 (3) ◽  
Keyword(s):  
Stearic Acid ◽  
Quantum Mechanical ◽  
Mechanical Modeling ◽  
Magnesium Salts ◽  
Calcium And Magnesium ◽  
Membranotropic Action

scholarly journals Reasons for Reduced Moisture Resistance of Sulfur-Extended Asphalt Concrete

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7218
Author(s):  
Huu Tuan Le ◽  
Evgenij V. Korolev ◽  
Anna N. Grishina ◽  
Vitaly A. Gladkikh
Keyword(s):  
Asphalt Concrete ◽  
Water Soluble ◽  
Moisture Resistance ◽  
Physical Processes ◽  
Capillary Structure ◽  
Hydrolytic Decomposition ◽  
Magnesium Salts ◽  
Calcium And Magnesium ◽  
Sulfur Containing ◽  
Decomposition Of Water

The paper presents the results of a study of the mechanism for reducing the moisture resistance of sulfur-extended asphalt concrete. It is shown that a decrease in moisture resistance occurs due to the occurrence of chemical and physical processes. At the same time, it was found that during the manufacture of sulfur-bitumen composites, toxic gases H2S and SO2 are formed, which are capable of interacting with a mineral filler, as well as the interaction of sulfur with a mineral powder with the formation of sulfur-containing water-soluble salts, the extraction of which leads to a decrease in the moisture resistance of sulfur-bitumen materials. The change in the rate of leaching of these substances from the composite is due to the physical process caused by the crystallization of sulfur and the formation of a capillary structure, which significantly increases the rate of leaching of calcium and magnesium salts, which are products of dissolution or hydrolytic decomposition of water-soluble products of the interaction of sulfur, H2S and SO2 gases with calcium and magnesium carbonates. The intensity of chemical and physical processes intensifies with an increase in the amount of sulfur in sulfur-bitumen materials.

Production and bioavailability of calcium and magnesium salts of omega-3 fatty acids

2009 ◽  
Vol 1 (2) ◽  
pp. 217-221 ◽  
Author(s):  
Jaroslav A. Kralovec ◽  
H. Stephen Ewart ◽  
Jeffrey H.D. Wright ◽  
Lynn V. Watson ◽  
Dorothy Dennis ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Magnesium Salts ◽  
Calcium And Magnesium
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