Lawson criterion for ignition exceeded in an inertial fusion experiment

For more than half a century, researchers around the world have been engaged in attempts to achieve fusion ignition as a proof of principle of various fusion concepts. Following the Lawson criterion, an ignited plasma is one where the fusion heating power is high enough to overcome all the physical processes that cool the fusion plasma, creating a positive thermodynamic feedback loop with rapidly increasing temperature. In inertially confined fusion, ignition is a state where the fusion plasma can begin "burn propagation" into surrounding cold fuel, enabling the possibility of high energy gain. While "scientific breakeven" (i.e., unity target gain) has not yet been achieved (here target gain is 0.72, 1.37 MJ of fusion for 1.92 MJ of laser energy), this Letter reports the first controlled fusion experiment, using laser indirect drive, on the National Ignition Facility to produce capsule gain (here 5.8) and reach ignition by nine different formulations of the Lawson criterion

Ambulatory Extracorporeal Membrane Oxygenation: Times Are Changing

During the past century, medical technology has evolved to enhance quality and quantity of life. Medications, surgeries, and implantable devices have been developed and enhanced to reduce complications and improve patient outcomes. The use of extracorporeal membrane oxygenation is one of the most substantial advances in life-saving modalities. Extracorporeal membrane oxygenation has been widely used for patients with heart or lung failure across the lifespan. Expansion and simplifications of extracorporeal membrane oxygenation circuit designs have informed changes in patient treatment (from bed confinement to ambulatory) and shifted many clinical staffing structures (from cardiovascular perfusionist to nurse-managed care). Highly skilled registered nurses and advanced practice registered nurses are increasingly involved in managing extracorporeal membrane oxygenation in the critical care setting. The purpose of this article is to highlight the technological evolution of extracorporeal membrane oxygenation and the corresponding patient care that bedside registered nurses and advanced practice registered nurses provide

Ambulatory Extracorporeal Membrane Oxygenation: Times Are Changing

During the past century, medical technology has evolved to enhance quality and quantity of life. Medications, surgeries, and implantable devices have been developed and enhanced to reduce complications and improve patient outcomes. The use of extracorporeal membrane oxygenation is one of the most substantial advances in life-saving modalities. Extracorporeal membrane oxygenation has been widely used for patients with heart or lung failure across the lifespan. Expansion and simplifications of extracorporeal membrane oxygenation circuit designs have informed changes in patient treatment (from bed confinement to ambulatory) and shifted many clinical staffing structures (from cardiovascular perfusionist to nurse-managed care). Highly skilled registered nurses and advanced practice registered nurses are increasingly involved in managing extracorporeal membrane oxygenation in the critical care setting. The purpose of this article is to highlight the technological evolution of extracorporeal membrane oxygenation and the corresponding patient care that bedside registered nurses and advanced practice registered nurses provide.</jats:p