The phrase "a the rate of" is not correct in English.
It appears to be a typographical error, as it combines "a" and "the" unnecessarily. An example of a correct phrase would be "at the rate of."
Alternatives: "at a rate of" or "with a rate of."
For Series A, the rate of active use is similar for the years 1985, 1995 and 2015, but the year 2005 stands out as being significantly different.
As illustrated in Fig. 5 A, the rate of unlimited proliferation of LNCaP cells was increased by the addition of recombinant IL-6 or CCL5 in a dose-dependent manner.
In case A, the rate of morphological change peaks early and then returns to an average rate (dashed line).
Aftershock rate can be expressed in parametric form using well-known empirical characteristics of aftershocks—(a) the rate of aftershock activity triggered by an earthquake decays according to the Omori-Utsu law (Utsu et al. 1995) and (b) the total number of aftershocks triggered by an earthquake depends exponentially on its magnitude.
At any time, the birth rate of the juveniles are proportional to the existing adult population with proportionality constant a, the rate of transformation of the adults is proportional to the existing juveniles population with proportionality constant β. (r_{1}), (r_{2}), (r_{3}) are the death rates of the juveniles, adults of the prey population, and the predator population, respectively.
Collectively, the Global Fund-supported programs are projected to almost double the current number of people on ARVs, from 3 million at the end of 2010 to 5.8 million by 2015 if Scenario A (the rate of increase matches that in 2007 10) continues (Figure 1).
The constant A is the rate of decay of the activity.
They suffer only a fraction of diseases that kill Americans: a fifth the rate of cardiovascular disease, a fifth the rate of breast and prostate cancer, and less than half the rate of dementia seen among similarly aged Americans.
As a result, the rate of photosynthesis reaches its maximum at an optimum temperature, then decreases.
I can run my output clock at a third the rate of the input clock.
As a result, the rate of infection among gay men has begun to climb.
