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.
But September begins to feel like fall as days get shorter and cooler. Just like people, the trees in September begin to get ready for the coming winter. The trees which will spend the winter without their leaves, called deciduous trees, will soon begin turning color. It can be fun to do a study of which trees begin to change color first. Here are a few ideas to help you get started. Some trees which are not healthy change color before their neighbors.