The phrase "appears to be invalid" is correct and usable in written English.
You can use it when indicating that something seems to lack validity or is not acceptable based on the information available.
Example: "The data submitted for the project appears to be invalid, and we need to verify its accuracy before proceeding."
Alternatives: "seems to be incorrect" or "looks to be invalid."
Such a tendency appears to be invalid in the present PLA on brass in water to form abundant nanoparticles of (Zn,H -codoped cuprite rather than W-ZnO.
In addition, based on the preprocessing conditions of data during this analysis, these do not apply to sigmoid kernel function because there is no inner product of two vectors, and there appears to be invalid phenomenon for certain parameters.
This paper examines some of the data that were first used to relate crack growth (da/dN) to the stress intensity factor (K) and reveals that even in this case the similitude hypothesis appears to be invalid in Region I, where the crack growth was low.
The DOT appears to be invalid for assessing upper extremity work demands.
Antonelli's analysis makes several important contributions to our understanding of lobeliad evolution and geographic spread, but his claim regarding convergence appears to be invalid.
However, this approach appears to be invalid when T. harzianum sensu Chaveri et al. [ 16] is compared with its genetically closest neighbouring species.
In 1998, the Republicans on the board declined to throw off the ballot a candidate in the Democratic primary for United States Senate, Eric Ruano Melendez, though his petition signatures appeared to be invalid.
Election supervisors said they have come across forms with handwriting that did not match previous registration forms, bogus addresses and other identifiers like driver's license numbers that appeared to be invalid.
His report said some schools' testing methods "were often unclear or appeared to be invalid".
In spite of arguments, an instrument might appear to be invalid and in this situation, the estimated effects would still be biased.
In a written statement to POGO, the Navy spokeswoman said that in late 2010 Navy personnel involved in the littoral combat ship program "limited discussion of" calm water trial results "because some of these initial results appeared to be invalid".
