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Dichlorodifluoromethane (R-12) is a colorless gas popularly known by the genericized brand name Freon (as Freon-12).It is a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant.
The skeletal structure of norepinephrine The skeletal structure of dopamine. A norepinephrine–dopamine reuptake inhibitor (NDRI) is a drug used for the treatment of clinical depression, attention deficit hyperactivity disorder (ADHD), narcolepsy, and the management of Parkinson's disease.
This is before accounting for the effects of any subsequent neutron capture; e.g.: 135 Xe capturing a neutron and becoming nearly stable 136 Xe, rather than decaying to 135 Cs which is radioactive with a half-life of 2.3 million years; Nonradioactive 133 Cs capturing a neutron and becoming 134 Cs, which is radioactive with a half-life of 2 years
Tin-121m (121m Sn) is a radioisotope and nuclear isomer of tin with a half-life of 43.9 years.. In a normal thermal reactor, it has a very low fission product yield; thus, this isotope is not a significant contributor to nuclear waste.
Thus, notwithstanding it is a misnomer, the term survives (e.g., rhesus blood group system and the obsolete terms rhesus factor, rhesus positive, and rhesus negative – all three of which actually refer specifically and only to the Rh D factor and are thus misleading when unmodified). Contemporary practice is to use "Rh" as a term of art ...
The Gompertz–Makeham law states that the human death rate is the sum of an age-dependent component (the Gompertz function, named after Benjamin Gompertz), [1] which increases exponentially with age [2] and an age-independent component (the Makeham term, named after William Makeham). [3]
HD 10307 A, the larger component, is a G-type main-sequence star similar to the Sun, only slightly brighter, hotter, larger, and older than the Sun—though with a slightly smaller mass. It has a low level of activity and is a candidate Maunder minimum analog. [ 13 ]
Kepler-138, also known as KOI-314, is a red dwarf [3] [10] located in the constellation Lyra, 219 light years from Earth. [1] It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission used to detect planets transiting their stars.