Engineering & Materials Science
Acoustic impedance
8%
Americium
38%
Biomimetics
12%
Bismuth
11%
Boron carbide
10%
Carbon carbon composites
7%
Cerium
8%
Cerium oxide
7%
Composite materials
18%
Composite structures
6%
Compressive strength
5%
Copper
9%
Crystal structure
5%
Electric sparks
6%
Epoxy resins
5%
Failure modes
7%
Fibers
6%
Foams
5%
Hot Temperature
25%
Incident solar radiation
6%
Isotopes
8%
Lattice constants
8%
Materials testing
7%
Metals
5%
Neodymium
11%
Nuclear energy
30%
Oxides
19%
Planets
5%
Plasmas
6%
Platinum alloys
7%
Polycrystalline materials
6%
Polymers
8%
Powders
6%
Radioactive materials
6%
Radioisotopes
100%
Reentry
7%
Restoration
5%
Rockets
6%
Sandwich structures
9%
Scaffolds
5%
Self-healing materials
10%
Sintering
15%
Solid solutions
6%
Spacecraft
13%
Spark plasma sintering
11%
Spectroscopy
13%
Vents
7%
X ray diffraction analysis
7%
Physics & Astronomy
aerospace sciences
9%
americium
23%
americium 241
20%
analogs
9%
cerium
6%
characterization
6%
containment
7%
energy sources
6%
European Space Agency
19%
foams
5%
healing
7%
heat sources
11%
heaters
20%
impedance
9%
lattice parameters
5%
mars
14%
materials selection
8%
metal matrix composites
7%
modules
10%
neodymium
9%
oxalates
10%
oxides
13%
pellets
5%
reconnaissance
9%
rockets
6%
sandwich structures
7%
sintering
11%
space exploration
12%
sparks
5%
spectroscopy
6%
synthesis
5%
thermoelectric generators
38%
vehicles
11%
x rays
5%
Earth & Environmental Sciences
americium
13%
containment
5%
heat source
8%
heater
19%
Mars
5%
nuclear power
9%
program
5%
radionuclide
32%
science
13%
spectrometer
5%
spectroscopy
10%