Some elements, or their isotopes (nuclear species with the same atomic number but different mass numbers), decay with time.
Isotopes are atoms that have the same atomic number (and, hence, generally the same chemistry) but different mass.
The Park Service did as Congress instructed and put together a study of five different mass transit options, ranging from regular city buses to light rail.
The contract states: "The PhD student will gather large-scale datasets from a variety of different mass crowd events, such as music festivals, sporting events, etc".
Three ionic strengths and five different mass concentrations were tested.
Figure 9 Heat transfer parameters for different mass fluxes.
These were used to compare the different mass cohorts.
Remaining lines show results after augmenting trees to different mass resolutions as indicated in the panel.
According to this method, the different mass ratios of hybrid photocatalysts were prepared.
The aqueous scale inhibitor solution was prepared by dissolving the chemical reagents at different mass concentrations.
We will perform tests for at least 3 different particle materials of different mass density.
