Silica studies

Khanna S, Bahai R, Bharatam PV (2006) In silica Studies on PPARy Agonistic Heterocyclic Systems. 3 149-182... 

Fubini B. et al., Relationship between surface properties and cellular responses to crystalline silica Studies with heat-treated cristobalite, Chem. Res. Toxicol., 12, 737, 1999. 

Alkaloid Natural Product-inspired Small-molecule Binders to Bcl-2 and Bcl-XL and In Silica Studies... 

Chemically modified silicas studied in the reactions with amines... 

Also, the solid particles may contain water-soluble substances, which undergo leaching and specific adsorption. Reference [1865] reports the IEP of phosphate-containing goethite. One sample studied in [32] contained sulfate and phosphate, and its IEP and PZC differed significantly. The silica studied in [2929] was prepared in the presence of a nonionic surfactant. No attempt was made to remove that surfactant from the final product. Phosphate-doped titania was studied in [2930] and polymer-stabilized latex was studied in [2931], A few results presented above have been cited by others as pristine PZCs/IEPs. 

Estrada, E. and Pena, A. (2000) In silica studies for the rational discovery of anticonvulsant compounds. Biooig. Med. Chem., 8, 2755—2770. 

Khan MTH (2007) Recent Advances on the Sugar-Derived Heterocydes and Their Precursors as Inhibitors Against Glycogen Phosphorylases (GP). 9 33-52 Khan MTH (2007) Heterocydic Compounds Against the Enzyme Tyrosinase Essential for Melanin Production Biochemical Features of Inhibition. 9 119-138 Khanna S, Bahai R, Bharatam PV (2006) In silica Studies on PPARy Agonistic Heterocyclic Systems. 3 149-182... 

The protonic sites at the surface of amorphous silica are weakly acidic compared to the acid centers in crystalline aluminosilicates (e.g., zeolites). On ZSM-5, Bronsted sites are formed by protons adjacent to aluminum atoms in the tetrahedral framework. The concentration of acid sites increases with the aluminum content. The total acidity as well as the acid strength distribution can be determined by using n-butylamine and Hammet or arylmethanol indicators (25). Depending on the pKa of the indicator, a relative scale of the strength distribution is obtained (54). Results for a series of amorphous porous silicas of graduated pore size are shown in Figure 10. The acidity varies between pKa -1 and +9 and is nearly the same for all silicas studied. The results are specifically valid for this method only and cannot be compared with those derived from other methods. 

Polymorphism in Silica Studied in the Local Density and Generalized-Gradient Approximations. 

Chemical Structure of Silylated Silicas Studied by NMR Spectroscopy... 

Dore et al. (2004) compared the characteristics of several amorphous silicas studied by SANS and NMR techniques. The measurements reveal different characteristics for sol-gel silicas and ordered mesoporous silicas (MCM and SBA type). They obtained good agreement between gas adsorption, NMR and SANS results for the pore sizes. The neutron diffraction results for the water/ ice phase transformation in SBA silicas indicated a complex relationship that can be due to effects of nanopores and certain complexity of the water behavior in SBA mesopores which are broader than MCM mesopores. 

Lafargue, P.E., Gaumet, J.J., Muller, J.F., Labrosse, A. (1996) Laser ablation of silica study of induced clusters by Fourier transform ion cyclotron resonance mass spectrometry. Journal of Mass Spectrometry, 31, 623-632. 

In silica Studies on PPARy Agonistic Heterocyclic Systems... 

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