The following recent email-marketing studies show some of the wide variations in email open and click-through rates based on different industries and types of emails sent: 1  According to the 2012 Silverpop Email Marketing Metrics Benchmark Study, open rates in the United States averaged 19.9% .
Hydrodesulfurization (HDS) is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. The purpose of removing the sulfur, and creating products such as ultra-low-sulfur diesel, is to reduce the sulfur dioxide (SO
Hitachi Data Systems. For the former disk driver maker with the same parent company, see HGST. Hitachi Data Systems (HDS) is a company that provides modular mid-range and high-end computer data storage systems, software and services. It is a wholly owned subsidiary of Hitachi Ltd. and part of the Hitachi Information Systems & Telecommunications Division.