- University students10
- unmanned aerial vehicles1
- Unsanitary landfill leachate1
- Unsanitary storage1
- Unsteady flow2
- unsupervised machine learning1
- upcycling1
- Updated active fault map1
- Uplift Rate1
- Uptake1
- Uranium1
- Uranyl1
- Urartian Kingdom4
- Urartian tribal centers1
- Urbach's energy2
- Urban archaeology1
- Urban demolition waste1
- Urban flood risks1
- urban heat island1
- Urban mobility1
- urban transport1
- Urban transportation1
- Urban wastewater1
- Urban wastewater treatment1
- urea1
- Urtica dioica L1
- use1
- use of technology1
- Use value7
- UTAUT1
- utilization of artificial intelligence for scientific publication1
- U-type1
- UVeffect1
- UV radiation1
- UV-Vis absorbance1
- Uyum süreci1
- Uyuşturucu alışkanlığı1
- Uzaktan eğitim1
- Uzuncayir Dam Lake5
- Uzuncayir Darn Lake1