Chemistry (Sienko, Michell J; Plane, Robert A.)

Robert J . Webster III

As a flexible needle with a bevel tip is pushed through soft tissue, the asymmetry of the tip causes the needle to bend. We propose that, by using nonholonomic kinematics, control, and path planning, an appropriately designed needle can be steered through tissue to reach a specified 3D target. Such steering capability could enhance targeting accuracy and may improve outcomes for percutaneous th...

A biographical sketch of Robert J . Sacker

Robert John Sacker was born in Miami, Florida in October 1937. While in high school in Key West, Florida, he developed a strong interest in both mathematics and electrical engineering. He attended the Georgia Institute of Technology in Atlanta, where he met John Nohel, who inspired Sacker to specialize in mathematics. Completing his undergraduate studies in 1959, he entered the graduate program...

Comment (on Robert J. Gordon)

Robert J. Wenthold (1948–2009)

Robert J. Wenthold (Bob) grew up on a farm outside of Cresco, Iowa, a small town near the Minnesota border. Anyone who knew Bob would acknowledge that he never lost the midwestern work ethic gained during his formative years. After high school, Bob left the farm and went to Loras College, a small liberal arts college in Dubuque, Iowa. Following the completion of his undergraduate degree, he pur...

Profile of Brian K. Kobilka and Robert J. Lefkowitz, 2012 Nobel laureates in chemistry.

Those of us that had been hammering away in the field for 40 years or more cannot deny the excitement in learning that Brian Kobilka, a former postdoctoral fellow of Robert Lefkowitz, in collaboration with Roger Sunahara, had determined the structure of the agonist-bound β2-adrenergic receptor-Gs protein complex (1). To borrow a phrase from Henry Bourne, this is “the Big Enchilada” for the G pr...