1. <a href="./Journals/Article/RIEJ/10571851.pdf" target="_blank">Emerging issues and new challenges in electric power systems</a><br>S.N. Singh <br><hr>2. <a href="./Journals/Article/RIEJ/10571852.pdf" target="_blank">Heat pump dryers using hcfc 22 and hfc 134a as refrigerants</a><br>Umphisak Teeboonma, Somchart Soponronnarit, Jirawan Tiasuwan, Warunee Tia, Warraboon Kaewassadorn <br><hr>3. <a href="./Journals/Article/RIEJ/10571853.pdf" target="_blank">Investigations on characteristic parameters and power degradation of amorphous silicon solar modules based on long-term outdoor testing</a><br>Marwan Mahmoud <br><hr>4. <a href="./Journals/Article/RIEJ/10571854.pdf" target="_blank">The potential for wood gasifiers for tea drying in sri lanka</a><br>T.H Jayah, R.J Fuller, Lu Aye, D.F. Stewart <br><hr>5. <a href="./Journals/Article/RIEJ/10571855.pdf" target="_blank">A study energy conversion by a porous combustor-heat exchanger with cyclic flow reversal combustion</a><br>Sumrerng Jugjai, Chanon Chuenchit <br><hr>