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Use of silica fume and nano-silica in mortars attacked by acids present in pig manure
(2018-01-01)
Pig houses provide a highly aggressive environment to concrete structures. The chemical aggressiveness generated by pig manure may cause wear, loss in strength and premature damage to floors, leading to animal hoof diseases. ...
Electrochemical study of o-toluidine blue impregnated in mesoporous silica channels
(Springer, 2011-07-01)
This paper reports an electrochemical study of ordered mesoporous silica impregnated with a cationic dye (o-toluidine blue), prepared with a non-ionic surfactant as the structure-directing agent. O-toluidine blue was chosen ...
Electrochemical study of o-toluidine blue impregnated in mesoporous silica channels
(Springer, 2011-07-01)
This paper reports an electrochemical study of ordered mesoporous silica impregnated with a cationic dye (o-toluidine blue), prepared with a non-ionic surfactant as the structure-directing agent. O-toluidine blue was chosen ...
Estimating biogenic silica production of rhizaria in the global ocean
(American Geophysical Union, 2020-03)
Siliceous polycystines and phaeodarians are open-ocean planktonic protists found throughout the water column and characterized by complex siliceous skeletons that are formed, at least partly, through the uptake of silicic ...
Silica biogeochemical cycle in temperate ecosystems of the Pampean Plain, Argentina
(Pergamon-Elsevier Science Ltd, 2015-11)
Silicophytoliths were produced in the plant communities of the Pampean Plain during the Quaternary. The biogeochemistry of silicon is scarcely known in continental environments of Argentina. The aim of this work is to ...
Synthesis of a soluble functionalized-silica by the hydrolysis and condensation of organotrialkoxysilanes bearing (β-hydroxy) tertiary amine groups with tetraethoxysilane
(Elsevier, 2005-07)
The hydrolytic condensation of organotrialkoxysilanes containing (β-hydroxy) tertiary amine groups generates a significant fraction of intramolecular cycles and leads to the formation of closed structures. The aim of this ...
Stripping voltammetry of mercury(II) with a chemically modified carbon paste electrode containing silica gel functionalized with 2,5-dimercapto-1,3,4-thiadiazole
(Wiley-Blackwell, 2005-09-01)
The accumulation voltammetry of mercury(II) was investigated at a carbon paste electrode chemically modified with silica gel functionalized with 2,5-dimercapto-1,3,4-thiadiazole (DTTPSG-CPE). The repetitive cyclic voltammogram ...
Stripping voltammetry of mercury(II) with a chemically modified carbon paste electrode containing silica gel functionalized with 2,5-dimercapto-1,3,4-thiadiazole
(Wiley-Blackwell, 2005-09-01)
The accumulation voltammetry of mercury(II) was investigated at a carbon paste electrode chemically modified with silica gel functionalized with 2,5-dimercapto-1,3,4-thiadiazole (DTTPSG-CPE). The repetitive cyclic voltammogram ...