Infrastructure means the basic structure of an organization or system. A company's infrastructure would include all the fixed assets, i.e., the building, equipment, machinery and tools required to manufacture their product. Although people are not fixed assets they would be included in the company's infrastructure too.
Rarely a serious problem. Look-alikes: Jumping oak gall, tubakia leaf spot, oak leaf blister, other fungal leaf spots. Jumping oak gall Brown leaves appear on trees in the white oak group in late spring. Severe infections may cause the leaves to turn black, curl up and fall. On the underside are brown galls with the larva of a small wasp inside.
3. Cut the brown tips of the leaves off. Use the scissors to clip the brown leaf tips away. It is best to leave a very small sliver of the brown area remaining on the leaf. In doing this, you will avoid opening a fresh wound in the plant's leaf, which will stress the plant and may eventually turn brown itself anyway.