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A Comparison of Radar Reflectivity Estimates of Rainfall from Collocated Radars
Abstract Radar reflectivity–based rainfall estimates from collocated radars are examined. The usual large storm-to-storm variations in radar bias and high correlation between radar estimates and rainExpand
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Quantitative Effects of Contrast Enhanced CT Attenuation Correction on PET SUV Measurements
PurposeThe presence of contrast materials on computed tomography (CT) images can cause problems in the attenuation correction of positron emission tomography (PET) images. These are because of errorsExpand
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Composite Particle Reaction Theory
An effective potential operator is derived from the multiplescattering series expansion of the exact transition amplitude for scattering two composite particles. This effective potential operator isExpand
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NATURAL TRANSFER OF VIABLE MICROBES IN SPACE FROM PLANETS IN EXTRA-SOLAR SYSTEMS TO A PLANET IN OUR SOLAR SYSTEM AND VICE VERSA
We investigate whether it is possible that viable microbes could have been transported to the Earth from planets in extra-solar systems by means of natural vehicles such as ejecta expelled by cometsExpand
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Space radiation dose estimates on the surface of Mars.
A future goal of the U.S. space program is a commitment to the manned exploration and habitation of Mars. An important consideration of such missions is the exposure of crew members to the damagingExpand
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Mars Surface Ionizing Radiation Environment: Need for Validation
Protection against the hazards from exposure to ionizing radiation ramains an unresolved issue in the Human Exploration and Development of Space (HEDS) enterprise. The major uncertainty is the lackExpand
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Martian regolith as space radiation shielding.
In current Mars scenario descriptions, an entire mission is estimated to take 500-1000 days round trip with a 100-600 day stay time on the surface. To maintain radiation dose levels below permissibleExpand
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MA7-Measurement of the Temperature Dependence of the Vibrational Relaxation Rate of HF and the Effect
Absfract-The vibrational relaxation of HF was measured by the laser-excited fluorescence technique over the temperature range of 295-730 I(. The results are in agreement with the 350 IC measurementExpand
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3DHZETRN: Shielded ICRU spherical phantom.
A computationally efficient 3DHZETRN code capable of simulating High (H) Charge (Z) and Energy (HZE) and light ions (including neutrons) under space-like boundary conditions with enhanced neutron andExpand
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