"frequency of replacement" is correct and usable in written English.
You can use it to describe how often something is replaced, either in general terms or in comparison to something else. For example, "The new equipment has a much higher frequency of replacement than the old machinery."
The following characteristics were collected: age, gender, body mass index, reason of replacing or implanting the CIED, date of implantation, frequency of replacement, usage of temporary pacemaker, and type of the pacemaker.
Thus, we were unable to discover how use and care patterns (e.g. frequency of replacement, type of cleaning solutions) affect dry eye symptoms.
Indeed, when herd size and frequency of replacement deliveries are compared using the Kruskall-Wallis test, there is a significant difference in herd size between the different categories of the frequency of replacement deliveries (P < 0.05).
It is common to look for an increased frequency of replacement (non-synonymous) mutations as evidence of antigen-driven positive selection, and a decreased frequency of replacement mutations as evidence of negative selection [ 106].
First, the frequency of replacement (~15% of the GanR cells) in our system was lower than what was found previously: > 90% for two lines derived from MEL cells; 10% and 50% for two lines derived from ES cells [ 3].
This pattern occurs for variables pertaining to the frequency of replacement deliveries, whether trucks are pre-rinsed to remove organic material, whether disinfectant is used, and regarding drying time following wash of vehicles.
[There had been dual standards within the company regarding problems with the two brands, he said. "The responsibility for the problem lies with Tokyo," he said.] The company relied heavily on its warranty information, which showed that while replacements under warranty increased in 1999 over 1998, the frequency of replacements remained fairly low.
The significance of the relationship between the frequency of replacements and their location in the secondary structure element was estimated using the χ2 test with k-1 degrees of freedom, where k is the number of secondary structure elements.
Inasmuch as negatively charged amino acids such as glutamic acid, asparagine, and tyrosine are involved in defining OR function [ 59], the frequency of replacements targeting these specific residues was also assessed.
In an effort to increase the frequency of replacements among the GanR population of cells, we tried numerous variations in procedure: higher concentrations of hygromycin to select the cells with the target cassette; higher concentrations of gancyclovir to select replacements; different incubation protocols in normal and selective media in the periods before and after transfection.
If the frequency spectra of replacement sites alone are examined, Tajima's D values become slightly more negative for the Palos Verdes and La Jolla regions as a whole (the same pattern was not found overall across individuals sites; see Additional file 7, Table S5).
