The phrase "amelioration of existing" is correct and usable in written English.
It can be used in contexts discussing improvements or enhancements to current conditions, systems, or practices.
Example: "The project focuses on the amelioration of existing infrastructure to better serve the community."
Alternatives: "improvement of current" or "enhancement of existing".
When targeted in rodent models of inflammation using either soluble IL-15Rα or modified IL-15 mutant fusion proteins, amelioration of onset and of existing arthritis is observed.
However, the new terrorism prevention and investigation measures retain much of the existing control order system, so the new regime for detention of the children of failed asylum seekers (in "pre-departure accommodation") looks more like an amelioration than an abolition of the old.
Scientists often need to gather facts that come from clear scientific evidence of how, when modulated, an existing or potential drug target affects critical pathophysiological processes leading to either the disease cure, prevention or amelioration of symptoms in the clinical setting.
Young and Redmond [ 42] found that a number of adult patients with core symptoms of ADHD also reported unexplained fatigue, widespread musculoskeletal pain, or a pre-existing diagnosis of fibromyalgia or chronic fatigue; in addition, some patients reported amelioration of pain and fatigue symptoms when medicated with ADHD medicine.
There are wars, famines, breakdowns, but some sort of amelioration of the human condition can be seen to occur.
The slow amelioration of inequality was tacitly understood as a collective purpose, shared by all political parties.
Glucksmann believes that the only worthwhile "political" project is the constant, unrelenting, and most probably futile amelioration of obvious suffering.
"There has to be some preservation of the housing stock owned by blacks and an amelioration of the problem of restoring housing stock" for blacks, Mr. Parkman said.
* First Geneva Convention for the Amelioration of the Condition of the Wounded and Sick in Armed Forces in the Field (first adopted in 1864, last revision in 1949).
"But across 40 years of that hard work and commitment and professional skill, we have seen no amelioration of domestic violence.
