Brain disorders can also have an effect on the display of delta waves. Parkinson's disease, schizophrenia, and narcolepsy are all characterized by changes in delta wave activity. Some drugs and chemicals have been shown to impact the brain's delta waves.
Pruning advanced ornamental trees. Now's the time... Generally speaking an ornamental tree is one that is grown for its decorative looks and not for food. Winter is the perfect time to prune deciduous ornamental trees, as their structures are dormant. Inside the tree though, important processes are underway.
Q. When is the best time of year to prune my trees and shrubs? A. Pruning requirements of trees and shrubs will not only vary according to species, it will also depend on the purpose of pruning. If pruning is necessary because branches are dead and the tree or shrub causes a safety hazard, pruning can be performed at any time.