- Investigating the role of ISO international standards in reducing climate change
- Simulation of gray water treatment systems to produce non-potable quality water
- Design of hydrogen production system using parabolic trough solar collector and thermal energy storage tank
- Comparative study of SSI and RAI index in the west of Urmia watershed in 2019 by using of GIS
- Investigation of geomorphologic effects of land subsidence and its effects on ecosystem using ArcGIS software (Case study: Tehran)
- A Review on Hybrid Renewable Energy Systems (Hydro, Wind and Solar) and Related Novel Studies, Focusing on Power Generation Worldwide
Also, the second issue of Abnoos (the newsletter of the Echo Hydrology Association of the Faculty of Modern Sciences and Technologies, University of Tehran) has been attached to this issue.