Radial: A word with diverse meanings in medicine and the biomedical sciences: 1  Pertaining to the radius, the smaller bone in the forearm. 2  The radial artery is so named because of its proximity to the radius. 3  Pertaining to the radius of a circle.
A 3D model of ethyne (acetylene), the simplest alkyne. In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbonâcarbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula CnH2nâ2.
Hexamethyldisiloxane (MM, HMDS1), the smallest member of the polydimethylsiloxane polymers, and decamethylcyclopentasiloxane (D5), a cyclic siloxane are colorless volatile fluids. MM is quite volatile with a vapor pressure of 42.2 mm Hg at 25Â°C and a boiling point of 100Â°C (Flanningam, 1986). D5 is relatively less volatile with a vapor pressure of 2 mm Hg at 50Â°C and a boiling point of 210Â°C. The aqueous solubilities of MM and D5 are 930 and 17 ppb, respectively (Varaprath et al., 1996).