Following the injection of CO2 into the system, pH immediately decreased from 9.5 to below 4, and thereafter gradually increased to 5.8 at the end of 10000 years (Figure 2a).
The Type I error rate of the corrected analysis was below nominal at low disease prevalence and decreased from 0.09 to below nominal at high prevalence.
In the fed-batch fermentations a 2 to 3 -fold increase of acs1 mRNA level occurred when lactose concentration decreased from 40 to below 5 g l-1, before the start of the lactose feed as in the deceleration to stationary phases of the batch cultures.
No further decline was found for Cry1Ab concentrations in casts of A. caliginosa during a subsequent period of 3 months of incubation in bulk soil (<0.1 ng g−1) after removal of the earthworms from the microcosms, while in casts of L. terrestris the concentration decreased from 0.4 to below 0.1 ng g−1.
During the same time frame, fertility rates -- expressed as the number of live births per 1,000 women age 18-44 -- decreased from 69.3 to below 65.
Naturally, the black liquor in the pool changed its color from black to brown and the pH decreased from above 11.0 to below 9.0 since 2005.
Steam temperatures climbed from about 180 °C (saturated steam) to 315 °C (superheated steam) and eventually to 510 °C over the same time period, while heat rates decreased from about 38,000 to below 10,000 Btus per kilowatt-hour.
The pH of the samples stored in air was measured over the 42 days and gradually decreased from about 7.4 to below 6.5 (Supplemental Figure 3).
Prevalence rate of tobacco consumption appears decreased from 60% down to below 40% in males, while that in females has remained about 5% or lower during the last 20 years according to data from the Department of Health, Executive Yuan in a survey of general population [ 17].
Media was considered as acidified if the pH decreased from pH 7.3 to below pH 6.5.
Further, the mortality rate associated with non-surgical approaches decreased from 1 % to below 0.1%% [ 20].
