In general Al2O3 and trace element concentrations increase as grain size and SiO2
Por medio de los diagramas de Alcalis total (Na2O+ K2O) vs SiO2
(FIGURA 1), la gran mayoria de las muestras se encuentran en el campo de clasificacion de rocas subalcalinas, que a su vez son clasificadas por medio del diagrama AFM (FIGURA 2) como rocas calcoalcalinas, relacionada a un ambiente compresivo de subduccion, donde la placa Caribe desciende bajo la Continental (Jaramillo & Rojas 2003), produciendo el vulcanismo que producen las rocas de Iza.
2] and PVB is existing in PVB/ SiO2
After the treatment of Zn(OH)2, the reaction between SiO2
and Zn(OH)2 may produced silicate and reaction between Al2O3 and Zn(OH)2 may generated aluminate, which lead to the content of SiO2
and Al2O3 decreased.
The test varieties, Yuejinsimiao 2 and Peizataifeng, were grown under five fertilizer rates including 'no fertilizer', 100 kg N ha-1, 100 kg N ha-1 + 60 kg SiO2
ha-1, 125 kg N ha-1, 125 kg N ha-1 + 60 kg SiO2
Indeed, in FeO to SiO2
diagrams, the samples are mostly in the IAG+CAG+CCG range with most Post-POG granites identical with Ghareh Gheshlagh granitoids (fig.
Physiological phosphorus use efficiency (PPUE) and potassium use efficiency (PKUE) were highest with Peizataifeng when 125 kg N ha-1 + 60 kg SiO2
ha-1 was applied while Physiological nitrogen use efficiency (PNUE) was highest with Yuejinsimiao 2 when no fertilizer was added.
MgO and SiO2
define a trend marked by increasing SiO2
with decreasing MgO.
Effect of variation of SiO2
and Na2O on glass melting
3 inch dia single crystal si (100 wafer with sio2
CNTs-MIPs with MTD as a template molecule were prepared by selective MIP polymerizing on the surface of SiO2