Using of geathermal energy in heating and cooling of aqricultural structures Developing and Validating Soil Temperature Model under Egyptian Conditions Comments on “Classification of solar radiation zones and general models for estimating the daily global solar radiation on horizontal surfaces in China’’, by Liu et al. [Energy Conversion and Management, 2017.10.043.] Corrigendum to ‘Comments on “Classification of solar radiation zones and general models for estimating the daily global solar radiation on horizontal surfaces in China”, by Liu et al. [Energy Convers. Manage. (2017) 10.043.]’ [Energy Convers. Manage. (in press)] Empirical models for estimating global solar radiation in Wuhan City, China Parameters Calibration of Vermicomposting Nursery Substrate with Discrete Element Method Based on JKR Contact Model Reply to “Reply to [Comments on “Classification of solar radiation zones and general models for estimating the daily global solar radiation on horizontal surfaces in China” [Energy Convers. Manage. (2017) 10.043] [Energy Convers. Manage. (2018) 05.051], by Liu et al.” Ecological circular agriculture: A case study evaluating biogas slurry applied to rice in two soils Valorization of bio-fertilizer from anaerobic digestate through ammonia stripping process: A practical and sustainable approach towards circular economy. Influence of the structure and properties of lignocellulose on the physicochemical characteristics of lignocellulose-based residues used as an environmentally friendly substrate Humidification-dehumidification process used for the concentration and nutrient recovery of biogas slurry.