drought is still accounted as a serious agronomic problem and also one of the most important factors contributing to crop yield loss. the effect of sodium silicate (na2sio3, abbreviated as si) was investigated on the four major antioxidant enzyme activities and five other relevant components in two different grapevine cultivars (vitis vinifera l., cvs mish pestan and sahebi, as tolerant and sen...

An all-aqueous sol-gel method for encapsulation of bacterial cells in porous silicate matrices towards the development of a biosensor is described. The sol-gel encapsulation of cells is achieved at room temperature and neutral pH. Furthermore, use of sodium silicate as precursor avoids generation of alcohol that can be detrimental to cells in contrast to the traditional alkoxide sol-gel encapsu...

–Flyash based geopolymer concrete is introduced in 1979 by Davidovits to reduce the use of OPC in concrete. Geopolymer is an inorganic alumino-hydroxide polymer synthesized form predominantly silicon and aluminum materials of geological origin and by product materials such as flyash (with low calcium). In this paper an attempt is made to study strength properties of geopolymer concrete using lo...

This report reviews the safety of Aluminum, Calcium, Lithium Magnesium, Lithium Magnesium Sodium, Magnesium Aluminum, Magnesium, Sodium Magnesium, and Zirconium Silicates, Magnesium Trisilicate, Attapulgite, Bentonite, Fuller’s Earth, Hectorite, Kaolin, Montmorillonite, Pyrophyllite, and Zeolite as used in cosmetic formulations. The common aspect of all these claylike ingredients is that they c...

In this paper, synthesis of geopolymer from fly ash with sodium hydroxide as activator was studied. Fly ash was replaced by Lime stone dust in various proportions (10% and 15%) where Fly ash was used as source material for synthesis of geopolymer. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solutions were mixed maintaining a silicate modulus (Na2O / SiO2) at 1. Scanning electron micro...