Harvest the cucumbers when young. Slicing cucumbers should be about 6 to 8 inches (15.24 to 20.32 cm) long. Cucumbers can usually be twisted off the vine without the use of shears. Pickling cucumbers should be harvested at 2 inches (5 cm) and dills should be harvested at 4 to 6 inches (10 to 15.24 cm).
Assist-Control Ventilation (ACV) Also known as continuous mandatory ventilation (CMV). Each breath is either an assist or control breath, but they are all of the same volume. The larger the volume, the more expiratory time required. If the I:E ratio is less than 1:2, progressive hyperinflation may result.
Negative pressure is generated and maintained by a ventilation system that removes more exhaust air from the room than air is allowed into the room. Air is allowed into the room through a gap under the door (typically about one half-inch high).