The phrase "are present however" is correct and usable in written English.
It can be used to indicate that something exists or is available, while also introducing a contrasting point or exception.
Example: "The resources are present; however, their accessibility remains a challenge."
Alternatives: "are available, but" or "exist, yet".
He does note that atypical threats are present, however.
Usually up to five white blood cells per high-power field (HPF) are present; however, the presence of more than 10 white blood cells per HPF indicates a urinary tract infection.
The similarity principle is contradicted in the region where cliffs are present, however, the sizes of these cliffs are variable [12].
The method cannot be 100% accurate and hence it may be expected that a few erroneous negative hits are present, however some of the negative hits for SMPD can be explained.
The line of the volcanic front in western Japan lies across Kyushu and the Ryukyu Islands, where many active volcanoes are present; however, no volcanic front exists on the Shikoku or Chugoku Island.
MHC class II molecules are present, however, in intracellular reservoirs and can be recruited to the cell surface through exposure to interferon gamma (IFN-γ) [5], [6].
No histograms are presented; however, the numerical results are tabulated in the subsections following.
The demographic and behavioral characteristics of women in the qualitative subsample are presented; however, emphasis is on the qualitative findings.
Unadjusted p-values are presented, however authors advise that a significance finding near the threshold of p < 0.05 should be interpreted with caution.
a Raw data are presented, however the test statistics were based on log10 (+constant) transformed data because of extreme positive skewness.
As soon as a second electron is present, however, the degeneracy is lost.
