Results 41 to 50 of about 13,529 (182)
/sup 238/PuO/sub 2/ fines generation in radioisotopic heat sources [PDF]
, 1983 Fuel aging studies were performed on the fuel form (plutonium-238 dioxide and yttrium) used in the Milliwatt Generator Radioisotopic Heat Source to determine the possibility of fuel degradation and of the resultant generation of respirable fines. In addition to long-term thermal aging of the fuel, evaluations included the effects of thermal ramping of ...
openaire +2 more sources
Design of multihundredwatt DIPS for robotic space missions [PDF]
Design of a dynamic isotope power system (DIPS) general purpose heat source (GPHS) and small free piston Stirling engine (FPSE) is being pursued as a potential lower cost alternative to radioisotope thermoelectric generators (RTG's).
Bents, D. J. +5 more
core +1 more source
Unveiling Dipolar Interaction‐Driven Magnetic Field Inhomogeneities in T2 MRI Contrast Agents
Advanced Science, Volume 13, Issue 3, 14 January 2026.In this study, chemically designed nanoscale‐distance‐tuned based on silica‐coated iron oxide nanoparticles are used to investigate how dipolar interactions affect magnetic resonance imaging (MRI) contrast. By varying shell thickness, researchers modulated dipolar interactions and observed an exponential increase in transverse relaxivity (r2) that ...
Pelayo García‐Acevedo +6 more
wiley +1 more source
Power systems related to operations of a landed planetary capsule [PDF]
Power systems related to Mars landing ...
Ivanoff, R. G.
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Advanced Science, Volume 13, Issue 2, 9 January 2026.The advent of aptamers has highlighted their potential as alternatives to antibodies, overcoming limitations of structural instability and production cost. However, conventional approaches such as SELEX remain slow and labor‐intensive. This review examines recent advances in aptamer engineering, emphasizing in vitro and AI‐driven in silico strategies ...
John V. L. Nguyen +5 more
wiley +1 more source
Design characteristics and fabrication of radioisotope heat sources for space missions
Progress in Nuclear Energy, 2001 Abstract Radioisotope thermoelectric generators (RTGs) have been used by the United States to provide electrical power for spacecraft since 1961. All RTGs that have been launched by the U.S. have used heat sources fueled with the plutonium-238 isotope.
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Trade studies for nuclear space power systems [PDF]
As human visions of space applications expand and as we probe further out into the universe, our needs for power will also expand, and missions will evolve which are enabled by nuclear power.
Bents, David J. +2 more
core +1 more source
Atomic Batteries: Energy from Radioactivity
, 2015 With alternate, sustainable, natural sources of energy being sought after, there is new interest in energy from radioactivity, including natural and waste radioactive materials.
Kumar, Suhas
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ALSEP termination report [PDF]
, 1979 The Apollo Lunar Surface Experiments Package (ALSEP) final report was prepared when support operations were terminated September 30, 1977, and NASA discontinued the receiving and processing of scientific data transmitted from equipment deployed on the ...
Bates, J. R. +2 more
core +1 more source
A radiological assessment of nuclear power and propulsion operations near Space Station Freedom [PDF]
Scenarios were identified which involve the use of nuclear power systems in the vicinity of Space Station Freedom (SSF) and their radiological impact on the SSF crew was quantified.
Bolch, Wesley E. +5 more
core +1 more source