1 Pour 1 cup (120g) of borax and 1/4 cup (60ml) of lemon juice into the toilet bowl. 2  Let sit overnight. 3  In the morning, scrub with a toilet brush, then flush to rinse. 4  Easy! 5  For tough stains, make a borax and lemon juice paste. 6  Scoop some of the water out of the toilet to expose the stain, then rub the paste into it.
Purchasing power parity (PPP) is a theory which states that exchange rates between currencies are in equilibrium when their purchasing power is the same in each of the two countries.
What is chp? Combined heat and power (CHP)âsometimes referred to as cogenerationâprovides a cost-effective, near-term opportunity to improve our nation's energy, environmental, and economic future. CHP is an efficient and clean approach to generating on-site electric power and useful thermal energy from a single fuel source.