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.
Vacuole (plants). Quick look: A vacuole is a membrane-enclosed fluid filled sac found in the cells of plants including fungi. Vacuoles can be large organelles occupying between 30% and 90% of a cell by volume.Vacuoles appear to have three main functions, they:1  contribute to the rigidity of the plant using water to develop hydrostatic pressure. 2  store nutrient and non-nutrient chemicals. membrane barrier called a tonoplast limits each vacuole. This membrane is remarkable in that it can surround a small amount of fluid and then, after a short amount of time, during which water is taken in, stretch to become an organelle occupying as much as 95% of the cell by volume.