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.
If your purpose for pruning is to enhance flowering: 1  For trees that bloom in spring, prune when their flowers fade. 2  Trees and shrubs that flower in mid-to late summer should be pruned in winter or early spring.his depends to a large extent on why you prune. Light pruning and the removal of dead wood can be done anytime.