31. Throttling is a fundamentally irreversible process . 32. He published a series of papers on thermodynamically irreversible processes , gaining him recognition in the rapidly growing field. 33. In an irreversible process , finite changes are made; therefore the system is not at equilibrium throughout the process. 34. Chemical diffusion increases the entropy of a system, i . e . diffusion is a spontaneous and irreversible process . 35. When we cause energy to change forms, we are almost always increasing the entropy, which is an irreversible process . 36. If irreversible processes take place ( which is the case in real systems in operation ) the >-sign holds. 37. This is an irreversible process and we all must help in preparing a Basque nation for integration in Europe. 38. The single currency is the end of an irreversible process . . . these policies are not against employment. 39. Peru said the countries with nuclear weapons must " start an irreversible process to achieve their total elimination ." 40. "It's an irreversible process ,"