The phrase "an additional substantial" is correct and usable in written English.
It can be used when referring to something that adds significant value or importance to a situation or context.
Example: "The report highlighted an additional substantial benefit of the new policy that had not been previously considered."
Alternatives: "a further significant" or "an extra considerable".
Displacement has placed an additional substantial burden on Iraq's school system.
However, both the colony-forming unit assay for EPCs (14) as well as the culture from peripheral mononuclear cells of EPCs (27) would require an additional substantial amount of blood taken (at least 40 mL), which is not possible for children and adolescents due to ethical concerns.
An additional substantial reduction in computing time is obtained by subsampling the analytical function at a few selected times according to a geometric sequence and then using a good quality interpolant such as the cubic spline.
Most people who held a version of this theory agreed that at least a "form of corporeity" was required in all physical substances, but they disagreed over how many additional substantial forms were required for a given kind of body.
Also, each reviewer had additional substantial concerns about the description of the study and potential addition of an experiment, about the breadth of interpretation of mechanisms, and other issues.
The company said it "does not expect to incur additional substantial losses" from the mortgage unit.
Shell's sponsorship of the Atmosphere gallery led to additional substantial donations, which made the project possible.
The settlement also requires the company to make additional "substantial, wide-ranging and specific reliability enhancement measures".
The filing also says that "even if Con Edison were fully reimbursed for its costs of repair and restoration, the company expects to incur additional substantial incremental costs for measures to increase the security of its infrastructure, as well as substantial additional interference costs related to infrastructure rebuilding by New York City and others".
The degree of weathering seems to be constant, as after 7 days of exposure no additional substantial changes could be observed (Table 1).
"Additional substantial infrastructure, including communications and surveillance systems, is expected to be built on these features in the coming year," the report said.
