The phrase "an apparent difficulty of" is correct and usable in written English.
It can be used when discussing a perceived challenge or obstacle in a particular context or situation.
Example: "There is an apparent difficulty of understanding the new regulations among the staff."
Alternatives: "a noticeable challenge in" or "an evident issue with".
Valence bond theory runs into an apparent difficulty with CH4.
Finally, a fourth challenge may be the apparent difficulty of expressing longer scaffoldin variants.
The apparent difficulty of sustaining such a view of belief is often held to reflect badly on the a coarse-grained possible-worlds view of propositions in general, since it's generally thought that one of the principal metaphysical functions of propositions is to serve as the contents of belief and other "propositional attitudes" (e.g., Field 1978; Soames 1987).
Nor did you explain that the primary responsibility for policing Puerto Rico's borders lies with the federal government.You also noted the apparent difficulty of doing business here.
Many workampers I met in Coffeyville were not just holding on but living with a very particular sort of alacrity, an almost aggressive good cheer that was frankly hard for me to reconcile with the apparent difficulty of their financial realities.
In view of the apparent difficulty of tetraploid cells to successfully complete mitosis, we wondered whether these cells might rely more heavily on the cell cycle checkpoint kinase Chk1 than diploid cells.
Moreover, selection processes to identify suitable candidates for specialist posts frequently encounter the apparent difficulty of finding suitably qualified and experienced black applicants.
Nevertheless, the apparent difficulty of RNA's prebiotic synthesis has led relatively few of those interested in the origin of life to explore the prebiotic synthesis of other molecules that are perhaps more robust (e.g., Nelson et al., 2000).
These same results may help to explain the apparent difficulty of finding clear dissociations between the impact of anterior thalamic and medial dorsal nucleus damage on aspects of human memory (Cipolotti et al., 2008; Aggleton et al., 2011; Pergola et al., 2012).
