Branches from the trees were covered with black permeable plastic bags for 12 hours a day.
Dependence on a "national beverage" produced outside the bounds of empire raised anxieties about ingestion and fears of permeable cultural, political, and physical boundaries.
They found higher germination percentages of brown than green seeds, indicating that brown seeds were more permeable than the green ones.
The boundaries between these gendered agricultural spaces were at times permeable as men and women crossed over in order to perform very specific tasks.
As the outer sublayers become thinner and more permeable, the inner boundaries begin to imitate constant-pressure surfaces.
In particular, permeable group boundaries could, it appeared, easily defeat it.
Often, however, the boundaries between different contexts are highly permeable.
Firmly embedded in the context of mobility, ethnic boundaries seem to have been much more permeable in pre-colonial times than they are today.
