Â© 2012 LiveScience.com. All rights reserved. Addiction is a chronic brain disorder and not simply a behavior problem involving alcohol, drugs, gambling or sex, experts contend in a new definition of addiction, one that is not solely related to problematic substance abuse.he disease creates distortions in thinking, feelings and perceptions, which drive people to behave in ways that are not understandable to others around them, Hajela said in a statement. Simply put, addiction is not a choice. Addictive behaviors are a manifestation of the disease, not a cause..
The upper critical solution temperature (UCST) or upper consolute temperature is the critical temperature above which the components of a mixture are miscible in all proportions. solid state example is the palladium-hydrogen system which has a solid solution phase (H 2 in Pd) in equilibrium with a hydride phase (PdH n) below the UCST at 300 Â°C. Above this temperature there is a single solid solution phase.
Heating Values of Natural Gas. The heating value of a substance is the energy released upon combustion of a substance at standard conditions. The heating value can be measured as energy released per unit mass, unit volume or unit mole of a substance. For mixtures, the heating value can be estimated as a weighted sum. The following table gives heating values of various hydrocarbons and some other gases in Btu/Scf (energy released per unit volume). BTU : British Thermal Unit for energy. SCF : Standard Cubic Feet of gas. (Standard conditions correspond to 1.013 bara and 200C{adinserter 2}.