In general, yeasts are grown in the laboratory on solid growth media or in liquid broths. Common media used for the cultivation of yeasts include potato dextrose agar or potato dextrose broth, Wallerstein Laboratories nutrient agar, yeast peptone dextrose agar, and yeast mould agar or broth.
Defining Perforating. Connecting to the reservoir. Perforatingâthe act of blasting holes through steel casing, cement, and formation rockâlasts only an instant, but the long-term viability of most oil and gas assets depends upon it.
Definition. Tympanic membrane perforation, or a ruptured eardrum, is a hole in the eardrum (tympanic membrane). The eardrum is a very thin membrane made of tissue that separates the middle ear from the ear canal.efinition. Tympanic membrane perforation, or a ruptured eardrum, is a hole in the eardrum (tympanic membrane). The eardrum is a very thin membrane made of tissue that separates the middle ear from the ear canal.