With globalization and the spreading availability of technologies, nuclear proliferation challenges continue to grow and evolve. Savannah River National Laboratory (SRNL) works to counter proliferation by providing scientific and technological solutions, as well as expert advice to combat emerging threats.

Photoredox catalysis has emerged as an integral fraction of modern organic methodology.[1] Since the early 2000’s there has been a renewed interest in photochemistry, with photoredox catalysis utilizing visible light becoming a rapidly expanding field.

The treatment of ischemic stroke remains a daunting task as few therapeutic strategies have proven to be effective. Systemic thrombolysis with intravenous tissue plasminogen activator (tPA) remains the only proven treatment to improve clinical outcome of patients with acute ischemic stroke. But because of an increased risk of hemorrhage beyond 4.5 hours after onset of stroke, only certain stroke patients (1-2%) can benefit from tPA treatment.