Many foods are packaged in clear, vacuum-formed polystyrene trays, owing to the high gas permeability and good water-vapour transmission of the material.
Many fresh foods are packaged in clear vacuum-formed polystyrene trays, owing to the high gas permeability and good water-vapour transmission of the material.
The fourth section gathered information about the most often used removable retainers (Hawley retainer, Begg retainer, clear (vacuum-formed) retainer, etc).
It's very difficult to vacuum a messy floor but relatively easy to vacuum a clear floor.
As a result, "the Argentines were operating in a vacuum, without a clear sense of what the United States was thinking and what it was prepared to do to be helpful," Mr. Hakim said.
The inability of the Security Council to act has created a dangerous political vacuum, sending a clear message to President Bashar al-Assad that he can continue to kill with impunity and signaling to Syrian protesters that they are on their own.
However, the cooling capacity of the passive radiative cooler design without vacuum under a clear night sky achieved 38 W/m2.
The plastic filtrate capture basin normally used was replaced by a clear microplate placed in the vacuum plate base immediately beneath the filter plate such that all cells were aligned to capture the filtrate.
It seems like a small detail, but based on my past experience with Dyson's vacuums, having a clear sign of when you should be cleaning those filters is actually a huge help.
