A rotary evaporator consists of a round flask in a bath of hot water that is designed to evaporate solvents. The flask is rotated and the solvent collects under a vacuum onto a condenser and drips into a condensate collecting flask. in this way solutions can be concentrated or purified. By attaching a vacuum pump, the air pressure and therefore the boiling point of the fluid can be decreased
2 And now, when the Lamanites saw this they were affrighted; and they abandoned their design in marching into the land northward, and retreated with all their army into the city of aMulek, and sought protection in their fortifications.
“Knowing that Jehovah created the earth and designed us with the ability to enjoy his creation,” says Denielle, “shows me that he wants us to be happy.”
Their . . . paths [are] diverse; nevertheless, each seems called by some secret design of Providence one day to hold in its hands the destinies of half the world.”
Gloria, a mother of three, recalls: “We didn’t have any money for designer clothes, but I made clothes for the children, and I told them that these were special because no one else had them.”
The worms are housed in specially designed beds and are served a menu of either pig manure or human waste mixed with shredded wastepaper and other organic matter.
(Romans 7:19, 20; 1 John 2:16) Nevertheless, we do have several advantages in this battle, not the least of which is the fact that we are not ignorant of Satan’s designs. —2 Corinthians 2:11.
A 16th-century Persian carpet, in the Philadelphia Museum of Art, in Pennsylvania, U.S.A., shows a walled garden with trees and flowers woven into its design.
They then navigate a chicane designed to slow the cars down before the pit entry — the circuit is unusual in that the pits are not located on the main straight — and turn left again.