1. <a href="view_content.asp?id=10992352" target="_blank">Energy efficiency, utilization of renewable energies, and carbon dioxide emission case study of g20 countries</a><br>Mohammad Dodi Heryadi, Djoni Hartono<br><hr>2. <a href="view_content.asp?id=10992353" target="_blank">Economic growth, co2 emissions and energy use in the south caucasus and turkey a pvar analyses</a><br>Cosimo Magazzino <br><hr>3. <a href="view_content.asp?id=10992354" target="_blank">Estimation of diffuse solar radiation in the region of northern sudan</a><br>Osman Wageiallah Mohammed, Guo Yanling<br><hr>4. <a href="view_content.asp?id=10992355" target="_blank">Experimental study and kinetic analysis of cuoy-al2o3 absorbed so2</a><br>Zhongqing Yang, Jianghao Xie, Li Zhang, Mingnv Guo, Jingyu Ran<br><hr>