The Calculation for Saturated Solubility of Oxygen in Mn–Si Melts Equilibrated with MnO–SiO2 Slags

The MnO–SiO2 slag in equilibrium with Mn–Si melts with a Si molar ratio between 0.1 and 0.3 at 1,700 K was a single liquid phase. However, it was liquid phase saturated with solid MnO or solid SiO2 in the case of XSi less than 0.1 or greater than 0.3, respectively. Based on a subregular solution model, the calculated saturated solubility of oxygen in Mn–Si melts was 0.0236 mass % in pure manganese at 1,700 K and increased with the increasing silicon in the range of XSi from 0.1 to 0.3. However, the saturated solubility of oxygen decreases as the silicon exceeded 0.3, and the minimum solubility was 0.0041 mass % in pure silicon at 1,700 K. The results could be used to predict the compositions of endogenous oxide inclusions and evaluate the cleanliness of manganese ferroalloy.

Fractionation and Some Cond itions on the Extract Ability of Tropical Almond (Terminalia catapa) Seed Protein

The control variables involved in the extraction of seed protein from Terminalia catapa seed meal have being investigated. These include extraction time, pH, solid-solvent ratio. Protein and fractionated into albumin (4.25%), glutelin (3.57%), prolamin (8.96%) and globulin (6.35%). The extraction time (min) of 15, 30, 45 and 60 were used for fractionation of the seed protein. The results showed an increase in protein yield across the fractions with increasing extraction time; highest protein yield of 10.2% was recorded in prolamin at 60 mins. The pH dependent solubility profile revealed that the region of iso-electric point (minimum solubility) was at pH 8.0, the solubility reduced as the pH increased until it reached the iso-electric point which was followed by progressive increase in solubility with further increase in pH. The solid-solvent ratio of 1:5, 1:10, 1:20, 1:30 and 1:40 were used and the result shows that there was increase across the fraction with increasing solid-solvent ratio. Highest protein yield was recorded at ratio 1:40

L'orientation des mineraux des roches sous l'influence de la contrainte; II, Mineraux monocliniques et micas

Feldspar, amphibole, pyroxene, and micas in metamorphic rocks, relationship of orientation to direction of minimum solubility at crystallization; see also this Bibliography Vol. 30, Goguel 2 and Vol. 31, No. 11, 11 E67-09759

The effect of the siliceous component of decomposing rice hulls on the solubility of phosphate

The effects of decomposing rice hulls on the solubility of sparingly soluble phosphates have been examined. Rice hulls decomposed slowly and increased the solubility of ferric and aluminium phosphates. Phosphate was also released from the rice hulls alone. The increased solubility of the phosphates was shown to be due to greater hydrolysis which occurred when the pH of the cultures rose to 8 and also, in the case of aluminium phosphate, to an interaction with silica. Aluminium phosphate was dissolved in the presence of rice hulls over the pH range 5-8, with a minimum solubility near pH 7. Rice hulls also decreased the amounts of soluble phosphate adsorbed by aluminium and ferric oxides over this range. The response of plants following additions of rice hulls to soil is discussed in the light of these results.