The phrase "are unsuitable for this" is correct and usable in written English.
It can be used when indicating that something is not appropriate or fitting for a particular situation or purpose.
Example: "These materials are unsuitable for this project due to their lack of durability."
Alternatives: "are not appropriate for this" or "are not fit for this".
Existing risk assessment tools are unsuitable for this purpose, because they consider each contaminated site separately and on a local scale, which makes it difficult to compare the impact from different sites.
Even if the expertise and hardware capability for applying them were made available to local health departments, many time series are unsuitable for this approach.
19 As cadaver models are unsuitable for this research and field radiography is technically impossible, any inference is currently hypothetical and the link between degrees of motion and cord space cannot be directly calculated.
Several studies have suggested that GO annotations should be used to test the OC with extreme caution (Altenhoff et al. 2012; Thomas et al. 2012) or even are unsuitable for this purpose (Chen and Zhang 2012).
The remaining histone modifications available on ENCODE are unsuitable for this study as they either target non-promoter regions (e.g. H3K36me3 in the 3′-UTR [ 13]) or are mutually exclusive and thus highly redundant with those selected for this study (e.g. H3K9/27 ac).
Although some of these lineages are commonly found in anoxic environments, such as sediments, that are compatible with methanogenesis, others are mostly from aerobic and/or extremely acidic environments that are unsuitable for this metabolism, for example, the Marine Group-III (MG-III) and the Thermoplasmatales-related Acidic Cluster (TAC) (fig. 3 b).
As the existing plant is unsuitable for this new feedstock, two retrofit options: one-stage and two-stage membrane-absorption hybrid retrofit designs are analyzed.
Difficulty in achieving a suitable temperature profile along the length of the CMR, and membrane fractures due to the mechanical constraints of the packed catalyst bed proved to be problematic, and we conclude that the packed-bed configuration is unsuitable for this membrane type.
