This research explores the influence of fly ash source, alkali concentration and temperature on dissolution kinetics Al Si. The characteristics reaction products solid residue were evaluated with ICP-MS, SEM-EDS, quantitative XRD. It was found that occurs faster a higher yield compared to Si for both types. NaOH had similar effect Al, while influenced more by concentration. simultaneous alumino...

The composition of the polyhedral bodies formed within the tissues of insects infected by certain viruses has been the subject of many studies. Glaser and Chapman (1916) believed that polyhedral bodies were composed of an inner dense substance and a lighter peripheral substance. Dikasova (1942) concluded that the polyhedron was an aggregation of ovoid particles but did not state whether or not ...

Based on the consideration that compound 1 with a -PO3H2 group can be hydrolyzed into compound 3 which shows low solubility in aqueous solutions and thus aggregation can occur easily, a new fluorescence turn-on assay has been constructed for alkaline phosphatase (ALP) with compound 1. ALP at concentrations as low as 18 mU mL(-1) can be assayed with compound 1. Moreover, compound 1 has been succ...

Injection of alkaline solutions in reservoir leads to mineral dissolution and precipitation, possibly resulting in changes in permeability and porosity, and consequently altering solution pH. Accurate prediction of pH, alkali consumption and aqueous chemistry changes are required to design suitable chemical blends in alkaline-polymer (AP) or alkaline-surfactant-polymer (ASP) flooding. Excessive...

The apparent degradation rate constant of fluticasone propionate (FLT) in 0.1 M NaOH:methanol=1:1 at 37 °C was previously reported to be 0.169±0.003 h-1, and four degradation products (products 1-4) were observed in the solution. The aims of the present study were to assess the degradation rates of FLT in other alkaline solutions and clarify the chemical structures of the four degradation produ...

During a search for a sporicidal agent to equal or surpass formaldehyde in activity, a group of saturated dialdehydes ranging from two to six carbons was discovered. These dialdehydes exerted a surprisingly high degree of activity in isopropanol buffered with a carbonate or bicarbonate. Without the proper buffer, practically no activity was observed. A solution of 1% glutaraldehyde, 0.3% NaHCO(...