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Positron emission, beta plus decay, or β + decay is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino (ν e). Positron emission is mediated by the weak force.
The two types of beta decay are known as beta minus and beta plus. In beta minus (β − ) decay, a neutron is converted to a proton, and the process creates an electron and an electron antineutrino ; while in beta plus (β + ) decay, a proton is converted to a neutron and the process creates a positron and an electron neutrino. β + decay is ...
Interferon beta-1a and interferon beta-1b are used to treat and control multiple sclerosis, an autoimmune disorder. This treatment may help in reducing attacks in relapsing-remitting multiple sclerosis and slowing disease progression and activity in secondary progressive multiple sclerosis.
A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay. There are two forms of beta decay, β − decay and β + decay, which produce electrons and positrons respectively.
Interferon beta-1b is a cytokine in the interferon family used to treat the relapsing-remitting and secondary-progressive forms of multiple sclerosis (MS). It is approved for use after the first MS event. Closely related is interferon beta 1a, also indicated for MS, with a very similar drug profile.
Interferon beta-1a (also interferon beta 1-alpha) is a cytokine in the interferon family used to treat multiple sclerosis (MS). It is produced by mammalian cells, while interferon beta-1b is produced in modified E. coli. Some research indicates that interferon injections may result in an 18–38% reduction in the rate of MS relapses.
Common beta emitters. Various radionuclides emit beta particles, high-speed electrons or positrons, through radioactive decay of their atomic nucleus. These can be used in a range of different industrial, scientific, and medical applications.
interferon beta-1b and atorvastatin: Betaseron (beta-1b) has also been combined with atorvastatin with good safety results but poor performance. The combined treatment did not have any beneficial effects on RRMS compared to IFNB-1b monotherapy.
This is a list of common Feynman diagrams . Name or phenomenon. Description. Diagram. Beta decay. beta particle is emitted from an atomic nucleus. Compton scattering. scattering of a photon by a charged particle. Neutrino-less double beta decay.
t. e. Electron–positron annihilation occurs when an electron (. e−. ) and a positron (. e+. , the electron's antiparticle) collide. At low energies, the result of the collision is the annihilation of the electron and positron, and the creation of energetic photons : e−.