The term biomining have been coined to refer to the use of microorganisms in mining processes as in the biooxidation of refractory gold minerals. The biooxidation of refractory gold ores presents similar characteristics when compared with roasting and pressure oxidation. Almost without exception, microbial extraction procedures are more environmentally friendly. The isolated bacteria in this st...

The use of sintered CaO as a refractory material is not uncommon. Refractory material based on lime as the lining of the Bessemer converter was applied for the first time in 1875 in order to carry out desulphuring and dephosphoring of the molten pig iron. Due to interaction of the porous burned CaO with the atmospheric moisture during dead time followed by damage and disintegration of this case...

purpose: to evaluate the effect of intravitreal triamcinolone acetonide (ivt) reinjection on clinical and optical coherence tomographic (oct) features in refractory diabetic macular edema (dme). methods: in an interventional case series, all ivt-treated patients enrolled in a previous clinical trial (45 subjects), were recalled for performing a new ophthalmologic examination and oct. suitable e...