Isomer, in nuclear physics, any of two or more nuclides (species of atomic nuclei) that consist of the same number of protons and the same number of neutrons but differ in energy and manner of radioactive decay, and that exist for a measurable interval of time.
Interestingly, despite the high structural homology of PSI core complexes, the red forms present in the core of different organisms can substantially differ in energy [27].
Nuclear isomers, which have the same number of protons and neutrons but differ in energy content and radioactivity, are also distinct nuclides.
These two isomers differ in energy by only 5 kJ·mol−1.
The objective of this study was to evaluate the effect of diets differing in energy density (ED) in the last 4 weeks of the dry period and in the first 8 weeks of lactation on energy balance (EB), blood metabolites and reproductive performance.
The primary objective of this study was to evaluate the effect on dry matter intake (DMI), milk yield, milk composition, body weight (BW), and body condition score (BCS) change of cows offered diets differing in energy density in the last 4 wk of gestation and in the first 8 wk of lactation.
It is an obvious comment that energy compensation is most likely when you decide if and when you want to eat, and is more likely to occur when a choice of foods differing in energy density is provided.
If this requirement is met the opposite enantiomers differ in the energy of interaction with the surface.
We hypothesized that the species differ in metabolism of energy and nitrogen (N) and predicted that the differences would favour yaks to the harsh conditions of the plateau.
On exploratory class missions astronauts will be exposed to a variety of heavy particles (HZE particles) which differ in terms of particle energy and particle linear energy transfer.
