The semiempirical theories of mixtures developed by van Laar, Margules, Scatchard-Hamer, Wilson and Renon and Prausnitz are used to study the concentration fluctuations of binary liquid alloys formed among the alkali metals. Examination of the fitting capabilities of these theories leads to the conclusion that those of van Laar, Scatchard-Hamer and Renon and Prausnitz are appropriate both when ...

a child care service, it is surprising that there is still a great deal of confusion as to the conditions under which children are fostered in private homes. It is believed generally that it is better for a child who is deprived of the care of the family of origin to be brought up in another private family rather than in a children's home with a professional staff. There is little evidence, how...

the midst of raw sewage. In 2001, The EPA also found itself in trouble after declaring Ground Zero air clear, soon after the September 11th attacks. Local officials later heaped criticism on the EPA for that call. Even though the air was within normal limits, noxious dust coated buildings — and poorly protected cleaning crews were sent in to clean up that mess after the EPA’s all-clear. It’s al...