Effects of indomethacin and BCG vaccine on growth of transplanted tumors in mice

Continuous administration of indomethacin (IM) in drinking water (20 micrograms/ml) causes moderate inhibition of the growth of transplantable tumors in control mice but significantly increases the antitumor effect of BCG vaccine inoculated in combination with transplanted tumor cells. Hepatoma 29, insensitive to the vaccine becomes highly sensitivity to it under IM administration.     

European perspectives on the extractive metallurgy of iron

At the Seventh European Coke and Ironmaking Congress in Linz on September 12–14, 2016, attention focused on the prospects for the development of ferrous metallurgy. The combination of a blast furnace and an oxygen converter is expected to remain the primary system for smelting steel, until electrosmelting becomes dominant in the 2060s. The development of hydrogen metallurgy is predicted. Microbiological fermentation of metallurgical gases to produce ethanol and other chemicals will eventually be adopted on an industrial scale.     

Analysis of the efficiency of alternative methods for recycling iron-bearing metallic wastes

This article compares the total amount of fuel used in making steel from dispersed iron-bearing metallurgical wastes by different alternative technologies. Recycling such wastes by briquetting them and then smelting the briquets in blast furnaces is shown to be clearly more advantageous from an economic and environmental standpoint. The availability of excess pig-iron production capacity at a metallurgical plant allows the plant to recycle the given type of wastes by the most cost-effective means while also reducing emissions of greenhouse gases. Similar results can be obtained by smelting the briquets in cupolas.     

Blast-furnace smelting with the production of low-silicon hot metal

Blast-furnace smelting today is organized so as to produce low-silicon hot metal, with subsequent desulfurization. In that case, economical furnace operation is facilitated by the use of low-ash coke characterized by hot strength and low adhesion to the slag melt, as well as stable chemical composition, minimum softening temperature range, and increased melting point of the iron. The production of low-silicon hot metal with <0.5% Si at OAO NLMK is considered.