Two separate correlations for predicting the isothermal compressibility of reservoir fluids and crude oils have been developed. One correlation is based on molecular weight; the other, on API gravity.

In a surprising overturn, the lustrous, blue-white element osmium has beaten diamond in a test of compressibility. Not used much today, osmium has been incorporated into alloys for fountain-pen tips ...

[alpha]-Ca3N2 as an opaque, red-brown crystalline powder lying in the cubic Ia-3 space group, was placed into a specially designed glove box under nitrogen atmosphere, along with powdered f.c.c. Au, ...