- Investigation of various sizing methods for on-grid residential renewable energy systems
- Simulation of slaughterhouse effluent treatment systems
- Use of Lichens in Biological Monitoring of Air Quality
- A Review on Economic Studies (Based on Cost of Energy) in Photovoltaic-Thermal Systems
- Measurement of greenhouse gases according to the international standard ISO
- Lessons for climate policy from behavioral biases towards COVID-19 and climate change risk
Also, the third 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.