-- Jonathan Jahr, UC Davis associate professor of anesthesiology and pain medicine, has been elected to a three-year term as a district director for the California Society of Anesthesiologists. His duties include maintaining the members' roster, serving as official correspondent and preparing an annual written report for the society's District 8, which covers Sacramento, Yuba, Yolo, Sutter, Solano, San Joaquin, Amador, Alpine, Placer, Nevada, Sierra, El Dorado and Calaveras counties.