Formation of lime, magnesia and metakaolinite has been studied by TG and DTA of the corresponding hydroxides, carbonates and clay, alone or in the presence of sodium polymetaphosphate additive. The sintering of the products has been studied by gravimetric B.E.T. nitrogen gas sorption and X-ray techniques.Sodium polymetaphosphate is effective in enhancing sintering of lime Air Jordan Shop Online and magnesia at temperatures between 500–1000°C, especially above its melting point at 650°C. Sintering of metakaolinite formed from clay is accelerated by sodium polymetaphosphate only at Air Jordan Heels Canada higher temperatures of 1000–1200°C, when the additive reacts Buy Jordans Canada
chemically to form an aluminophosphate and a silicate glass.
The report of the Scott Committee on Land Utilisation in Rural Areas, in August 1942, constituted the first comprehensive review of rural issues in England and Wales. Never before had agriculture and land-use planning been considered in such an integrated, yet detailed, manner. Through contemporary archival evidence, the paper appraises the circumstances in which the Committee was convened, the preoccupations brought to its deliberations by the Chairman, Stamp and Dennison, and the manner in which Government departments, and most obviously the Ministry of Agriculture, sought to manipulate both the Committee's appointment and findings to their own advantage.