Gaplek is a processed product of cassava that requires drying process to remove the water content in cassava. Solar thermal energy can be used for gaplek by using greenhouse effect system. However, system solar very dependent on weather conditions and temperature difficult control. Therefore, control proposed this study utilizing Pulse Width Modulation (PWM) exhaust fan speed. Thus, maintained ...

This essay proposes an innovative institutional strategy for global climate protection, quite distinct from but ultimately complementary to the UNFCCC climate treaty negotiations. Our “building block” strategy relies on a variety of smaller-scale transnational cooperative arrangements, involving not only states, but also subnational jurisdictions, firms, and civil society organizations, to unde...

concentration of carbon dioxide (CO 2 ) by some 30 percent since the industrial revolution, and that rise continues at a rate of approximately 0.4 percent per year. Despite its seemingly minute concentration (only 0.035 percent), CO 2 inhibits the escape of longwave (thermal) radiation emitted by the earth throughout the entire atmosphere, a process known as the “greenhouse effect.” The presenc...