TY - JOUR T1 - Impact of salt crystal on heat retention in trapezoidal salt gradient solar ponds – an experimental investigation JO - Matéria (Rio de Janeiro) A1 - Murugesan, Dineshkumar A1 - Manickam, Venkatesan SN - 1517-7076 UL - 10.1590/1517-7076-RMAT-2025-1020 VL - 31 Y1 - 2026 PB - Brasil ER -