Rick Hancock has been appointed chief executive officer of Althea Technologies. In addition, Chris Duffy has been named senior vice president of operations and E.J. Brandreth was named senior vice president of Quality and Regulatory.    Mr. Hancock joined the company in 1998 and was previously president of Althea; he will retain the title of president in his new role. He has 30 years of biotechnology industry experience having held positions at Hybritech/Eli Lilly, Genetics Institute, and The Im...