For example, human sperm quality and fertility are reportedly declining over time (Nordstrom Joensen et al., 2009) but effects on conception rates may become obvious only when the number of fertile sperm declines to a critical level.
Your rate of discovery will keep on declining over time.
His Web site says the fraction of emission reductions allowed through offsets "would decline over time," but offers no specifics.
Employment also continues to decline over time, but never goes to zero; 16percentt of the applicants are still employed 18 20 months after they apply for the disability program.
As Figure 2 demonstrates, the percent of operations that likely had all milk production covered in the period the MILC program existed has declined over time but still constitute a majority.
The percentages of 125I-TNC-Ab uptake areas without postconditioning at 1, 3, 7, and 14 days after reperfusion tended to decline over time but the differences were statistically insignificant (82.7% ± 8.6%, 70.6% ± 20.5%, 61.1% ± 15.1%, 63.8% ± 5.6%, respectively, P = ns).
The mean number of clones recrudescing was greatest in the first week of the study and declined over time but remained greater than 1 for the whole period.
Antibody titers declined over time, but remained higher with the adjuvanted vaccine when measured 6 and 12 mo postvaccination.
The haematocrit in the six experimental calves and six control calves declined over time, but there was no statistically significant difference at any time between the two groups.
In that study, the QoL scores declined over time, but the follow-up of questionnaires was longer than in our study (up to 1 year after treatment).
