Page 4. Beta decay is a radioactive process in which an electron is emitted from the nucleus of a radioactive atom, along with an unusual particle called an antineutrino.The neutrino is an almost massless particle that carries away some of the energy from the decay process.age 4. Beta decay is a radioactive process in which an electron is emitted from the nucleus of a radioactive atom, along with an unusual particle called an antineutrino.
There is also a 12-hour extended-release form of pseudoephedrine; it should also start working within half an hour of taking your first dose, but will last much longer. Because it can last up to 12 hours, remember that you should not take more than two tablets in a 24-hour period.
1 Review. Pseudoephedrine is a drug found in numerous prescription and behind-the-counter medications, including Sudafed Congestion (but not Sudafed PE), Zyrtec-D, and Claritin-D.It's used to temporarily relieve nasal congestion from colds, allergies, and hay fever, and temporarily relieve sinus congestion and pressure.seudoephedrine is in a class of medications called nasal decongestants, which cause smooth muscles around the airway and nasal cavity to relax, allowing more air to flow through. It also causes blood vessels to contract.