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common rare earth element and serves an extremely broad range of functions. one of the most widely used yttrium-based materials is yttria-stabilized zirconia (ysz), an extremely hard, non-reactive ceramic that remains chemically stable even at high temperatures. ysz can be purchased in the formof water-based...
of carbon oxides, sulfer dioxide occurred resulting in acute lethality. ingestion: oral toxicity is very low. environmental effects: none physical and chemical hazards: not applicable specific hazards: not applicable 4. first aid measures skin contact: flush the skin with running water. for skin contact...
temperatures (330oc - 330oc) releases very little gases, which has a irritation property. however, if the temperature exceeds 360oc, decomposition will occur rapidly and release of carbon oxides,sulfer dioxide occurred resulting in acute lethality. ingestion: oral toxicity is very low. environmental...
] in the soviet union, pet was first manufactured in the laboratories of the institute of high-molecular compounds of the ussr academy of sciences in , and its name "lavsan" is an acronym thereof (лаборатории института высокомолекулярных соединений академии наук ссср). [ ] the pet bottle was patented...
[more...] forestry march , : russia: lumber, pellets and pulp production grew in jan.-feb. the volume of lumber production in russia in the first two months of this year increased by almost % compared with the figure and reached million m .........
wood. [ ] in general, pyrolysis of organic substances produces volatile products and leaves a solidresidue enriched in carbon, char . extreme pyrolysis, which leaves mostly carbon as the residue, is called carbonization . the process is used heavily in the chemical industry , for example, to produce...