NASA Scientific and Technical Aerospace Reports - The University ...

Very high dose (red) is deposited in voxels with direct ion traversal. Voxels with electron track ends (orange) are also found
distributed around the path of the track. In both cases, the appearance of the dose distribution looks very similar to DSBs seen
in gammaH2AX experiments, particularly when the visualization threshold is applied. CONCLUSION: The refinement of the
dose calculation to the nanometer scale has revealed important differences in the energy deposition between high- and
low-LET ions. Voxels of very high dose are only found in the path of high-LET ions. Interestingly, experiments have shown
that DSB induced by high-LET radiation are more difficult to repair. Therefore, this new approach may be useful to understand
the nature of DSB and oxidative damage induced by ionizing radiation.
Author
Monte Carlo Method; Radiation Damage; Biological Effects; Ionizing Radiation; Lesions; Deoxyribonucleic Acid;
Radiobiology; Molecules
20100017877 NASA Johnson Space Center, Houston, TX, USA
Space Radiation and Exploration - Information for the Augustine Committee Review
Cucinotta, Francis; Semones, Edward; Kim, Myung-Hee; Jackson, Lori; July 14, 2009; 30 pp.; In English; Augustine
Commission. Review of U.S. Human Spaceflight, 1 Aug. 2009, Washington, DC, USA; Original contains color illustrations
Report No.(s): JSC-CN-18611; Copyright; Avail.: CASI: A03, Hardcopy
ONLINE: http://hdl.handle.net/2060/20100017877
Space radiation presents significant health risks including mortality for Exploration missions: a) Galactic cosmic ray
(GCR) heavy ions are distinct from radiation that occurs on Earth leading to different biological impacts. b) Large uncertainties
in GCR risk projections impact ability to design and assess mitigation approaches and select crew. c) Solar Proton Events
(SPEs) require new operational and shielding approaches and new biological data on risks. Risk estimates are changing as new
scientific knowledge is gained: a) Research on biological effects of space radiation show qualitative and quantitative
differences with X- or gamma-rays. b) Expert recommendations and regulatory policy are changing. c) New knowledge leads
to changes in estimates for the number of days in space to stay below Permissible Exposure Limits (PELS).
Author
Gamma Rays; Galactic Cosmic Rays; Extraterrestrial Radiation; Risk; Mortality; Biological Effects; Health; Heavy Ions
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GENERAL
Includes aeronautical, astronautical, and space science related histories, biographies, and pertinent reports too broad for categorization;
histories or broad overviews of NASA programs such as Apollo, Gemini, and Mercury spacecraft, Earth Resources Technology Satellite
(ERTS), and Skylab; NASA appropriations hearings.
20100017359 National Park Service, Washington, DC, USA
Historic Preservation Response Methodology, Based on the Hurricane Katrina Model
January 2009; 264 pp.; In English
Report No.(s): PB2010-105969; No Copyright; Avail.: National Technical Information Service (NTIS)
Hurricanes Katrina and Rita devastated the Gulf Coast region in August and September 2005 and created the single largest
disaster for cultural resources that the USA has witnessed siince the inception of the National Historic Preservation Act
(NHPA) in 1966. Notably, the NHPA created the National Register of Historic Places, our nation’s catalog of important
cultural resources. The NHPA also stipulates that any Federal Emergency Management Agency (FEMA) the Katrina/Rita
event created the largest compliance project ever under Section 106 of the NHPA. Although causing a great deal of damage,
the event provided an important learning tool in developing processes, identifying challenges and generating solutions in
responding to extensive cultural resource issues during a disaster. At the request of FEMA, the National Park Service, Cultural
Resources GIS Facility (CRGIS) created a strategy to help FEMA meet its NHPA obligations focusing on New Orleans, LA.
Combining GPS and GIS tools, CRGIS constructed a methodology to identify and evaluate all potentially affected properties.
NTIS
Cultural Resources; Hurricanes; Preserving
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