DNA Repair Disorders. Four genetic disorders of the skin are caused by the inability of cells to remove damage caused by sunlight to DNA, the genetic material.our genetic disorders of the skin are caused by the inability of cells to remove damage caused by sunlight to DNA, the genetic material.
Excerpt from Petroleum Refining Industry Profile. Companies in this industry refine crude oil to produce fuel and other products. Major companies include Chevron, Exxon Mobil, and Valero (headquartered in the US); BP (UK); and Royal Dutch Shell (the Netherlands).Worldwide, the petroleum refining industry processes about 95 million barrels of crude oil each day, including about 18 million barrels per day refined in the US.The countries with the largest refining capacity are the US, China, Russia, India, Japan, and South Korea.ajor companies include Chevron, Exxon Mobil, and Valero (headquartered in the US); BP (UK); and Royal Dutch Shell (the Netherlands). Worldwide, the petroleum refining industry processes about 95 million barrels of crude oil each day, including about 18 million barrels per day refined in the US.
It is refined. to make âwhiteâ productsâliquefied petroleum gas. (cooking gas), gasoline, kerosene, and dieselâand. residual fuel oil. Worldwide, demand for white products. is growing much more rapidly than that for residual. fuel oil (used to generate electricity or heat). The petroleum industry is commonly considered to. comprise upstream and downstream sectors. Upstream. involves exploration, development, and production of. oil and gas.