The history of artificial refrigeration began when Scottish professor William Cullen designed a small refrigerating machine in 1755. Cullen used a pump to create a partial vacuum over a container of diethyl ether, which...
Southeast Asia are blessed with high productivity of fisheries resources because of ecology enrichment. About one-third of the world’s coral reefs and a quarter of world’s mangroves are found in the region.
In 2015, the...