Early life and education[edit] Rice was born in Washington, D.C., to Emmett J. Rice (1919â2011), Cornell University economics professor and the second black governor of the Federal Reserve System, and education policy scholar Lois Fitt (nÃ©e Dickson), currently at the Brookings Institution. Her maternal grandparents were Jamaican.
A vapour barrier (or vapour barrier) is any material used for damp proofing, typically a plastic or foil sheet, that resists diffusion of moisture through wall, ceiling and floor assemblies of buildings to prevent interstitial condensation and of packaging.he function of a vapor barrier is to retard the migration of water vapor, which are not typically intended to retard the migration of air. This is the function of air barriers.
1 A vapor barrier's job is to keep water vapor in humid air from diffusing through one side of a wall and finding a cool surface inside the wall. 2  When a vapor barrier is on the side of a wall where the dry air is (i.e., outside in winter or inside in summer), moisture problems can occur.A vapor barrier reduces the movement of water vapor by diffusion.hen a vapor barrier is on the side of a wall where the dry air is (i.e., outside in winter or inside in summer), moisture problems can occur. A vapor barrier reduces the movement of water vapor by diffusion.