Physics & Astronomy
nuclei
100%
neutrons
54%
isotopes
51%
nucleons
51%
protons
30%
approximation
27%
ground state
26%
cross sections
25%
half life
23%
radii
22%
matrices
20%
bosons
19%
density distribution
18%
blazars
18%
binding energy
18%
wave functions
17%
crystals
16%
heavy ions
16%
interactions
16%
energy
16%
single crystals
15%
nucleon-nucleon interactions
15%
decay
15%
rays
15%
folding
15%
ion scattering
14%
projectiles
14%
heavy nuclei
14%
separators
13%
moments
12%
nickel isotopes
12%
synthesis
12%
fission
11%
gauge theory
11%
strings
11%
optical properties
11%
optical materials
10%
characterization
10%
scattering
10%
operators
10%
fermions
10%
molecules
10%
projection
10%
algebra
10%
Wentzel-Kramer-Brillouin method
9%
quadrupoles
9%
gamma rays
9%
instantons
9%
evaporation
9%
radio spectra
9%
configurations
9%
fusion
9%
valence
8%
radioactivity
8%
symmetry
8%
polyatomic molecules
8%
formalism
8%
parity
7%
tin isotopes
7%
quasars
7%
India
7%
halos
7%
orbits
7%
formulations
7%
breeder reactors
7%
heavy elements
7%
shift
6%
matrix methods
6%
organic materials
6%
closures
6%
nucleon potential
6%
laser damage
6%
recycling
6%
x rays
6%
cycles
6%
excitation
6%
nuclides
6%
mesons
6%
harmonic generations
5%
expansion
5%
yield point
5%
glass
5%
angular distribution
5%
dihedral angle
5%
X Ray Timing Explorer
5%
refractivity
5%
filters
5%
anomalies
5%
angular momentum
5%
permittivity
5%
luminosity
5%
equivalence
5%
Earth & Environmental Sciences
Jurassic
52%
Oxfordian
46%
basin
32%
ammonite
31%
coral
24%
Callovian
24%
Bathonian
18%
gamma radiation
11%
sediment
10%
trace fossil
10%
sea level
9%
Tithonian
9%
brachiopod
9%
oolite
9%
Kimmeridgian
8%
luminosity
8%
reef
8%
radio
8%
shell
7%
energy
7%
sandstone
7%
belemnite
6%
depositional environment
6%
gastropod
6%
fossil
6%
Bajocian
6%
Cretaceous
6%
stable isotope
6%
cross section
6%
rock
5%
systems tract
5%
bivalve
5%
limestone
5%
flaring
5%
fauna
5%
accretion
5%
fast reactor
5%
energetics
5%
Engineering & Materials Science
Crystals
31%
Single crystals
26%
Optical properties
13%
Optical materials
13%
Neutrons
11%
Characterization (materials science)
10%
Waste incineration
10%
Derivatives
10%
Molecules
9%
Fast reactors
9%
Laser damage
9%
Evaporation
8%
Radioactive wastes
8%
Harmonic generation
8%
Refractive index
7%
Dihedral angle
7%
Breeder reactors
6%
Permittivity
6%
Shielding
6%
Photoluminescence
6%
Sodium
6%
Structural properties
6%
Light emission
6%
Glass
5%
Actinides
5%
Europium
5%
Zinc
5%
Neodymium lasers
5%