Within the broad area of UX, UI is devoted to details of links of pages, and grouped and repeatable behaviors. It is at this point where demonstrated object artistry comes to life at any fidelity. A majority is focused on objects which promote choice along a pre-defined user path. UI is integral with UX. It is at this detail where IU Designers will discover new ideas  hidden until this moment. This level of discovery will always improve the experience so long as makers remain sensitive to their work.

Best examples can be found at:
Food Gap, Fusion Resource Application , ININ or United Healthcare