Urodynamic testing or urodynamics is a study that assesses how the bladder and urethra are performing their job of storing and releasing urine. Urodynamic tests can help explain symptoms such as:
Some mixtures give rise to the reddish and purplish fall colors of trees such as dogwoods and sumacs, while others give the sugar maple its brilliant orange. The autumn foliage of some trees show only yellow colors. Others, like many oaks, display mostly browns. All these colors are due to the mixing of varying amounts of the chlorophyll residue and other pigments in the leaf during the fall season.
The first factor hinting at early color is the current dryness. I've been up north in the last week, and there are maple trees that have a hint of fall color throughout the tree. It is normal at this time of year to see a colorful branch here and there. But the trees turning now are doing it all over the tree. This leads me to believe that some of the trees may turn color early.