ghouty (NASA/MSFC) will present preliminary results from a high-fidelity, 3D radiation-transport simulation using a tool known as Geant4. The simulations estimate space-based radiation levels behind basic shell and slab geometries and were designed to help NASA mission planners design optimal structures for radiation safety during crewed space exploration missions. Larry Cumberbatch and Alexander Crowell (Duke) will describe a high-resolution positron emission tomography (PET) system designed to image physiological processes that influence the distribution of biological substances like sugar in plants. They will present initial results looking at sugars and fungal-root interactions in corn plants and mechanisms of carbon transport from leaves to stems, shoots and roots under various soil nutrient levels and atmospheric CO2 concentrations. Leah Broussard (Los Alamos National Laboratory) will describe a new program at the Los Alamos Neutron Science Center that uses ultracold neutrons to induce fission in uranium and plutonium and seeks to uncover the effects of sputtering due to nuclear fission, the understanding of which is crucial to the nuclear industry.
HOW STARS EXPLODE AND GALAXIES FORM: INSIGHTS FROM COMPUTATIONAL ASTROPHYSICS
Sunday, April 6, 10:30 a.m., EDT
To understand how the universe evolved, scientists must model processes on a vast range of scales, from the motions of tiny neutrinos, to the gravitational pull of supermassive black holes. In such situations a petascale supercomputer can be a researcher's best friend.
Christian Ott (Caltech) will discuss how he and his colleagues tackled the formidable challenge of modeling a core-collapse supernova in 3D. By honing algorithms and utilizing the National Science Foundations' Blue Waters supercomputer system, the team discovered somethingPage: 1 2 3 4 5 6 7 8 9 10 11 Related medicine news :1
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