Considering the fact that New Vegas and Skyrim both use different engines (Gamebryo and Creation Engine, respectively) and have different gameplay systems as well; I'd have to rule that out, it may however; be possible to port the meshes of New Vegas but not the guns or gameplay effects (maybe SKSE could help but I doubt it) in Skyrim. TL;DR version: No, but porting portions of New Vegas to Skyrim might be possible.