a b s t r a c tThe FactSage computer package consists of a series of information, calculation and manipulation modules that enable one to access and manipulate compound and solution databases. With the various modules running under Microsoft Windows s one can perform a wide variety of thermochemical calculations and generate tables, graphs and figures of interest to chemical and physical metallurgists, chemical engineers, corrosion engineers, inorganic chemists, geochemists, ceramists, electrochemists, environmentalists, etc. This paper presents a summary of the developments in the FactSage thermochemical software and databases during the last six years. Particular emphasis is placed on the new databases and developments in calculating and manipulating phase diagrams.
Thermodynamic equilibrium calculations performed with the program ChemSage reproduce the observed behavior of metals in refuse incineration furnaces and reveal general trends. Presentation of the results as a series of small graphs allows a quick overall view of the significant species. The calculations predict that all of the Hg present and most of the Cd and Pb volatilize, as is observed in practice. The amounts of Zn and Cu volatilized depend on the reduction conditions and on the amount of Cl present. As and Sb also volatilize, but Mg, Ca, Fe, and Ni do not volatilize under the prevailing oxidizing conditions. The presence of sulfur stabilizes many of the metals in sulfate phases at low temperature but has little influence above 800 °C. Under locally reducing conditions, it may favor the volatilization of Sn as SnS. More detailed studies, in which comparison is made with data from industrial furnaces with measurements carried out under well-defined conditions, are required to answer specific questions.
DCD lung transplants remain underused in the United States. Nevertheless, survival is similar to DBD. Primary graft dysfunction metrics for DCDs are worse than DBDs on intensive care arrival but improved subsequently.
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