Sentence examples for variable time spans from inspiring English sources

Once again, the primary sector offers a good example as many biological processes at the bases of food production may require extremely variable time spans.

The results are displayed for a decrease in cerebral extracellular glucose of ≥ 1 mmol/L over variable time spans within the observation period, and for presence of fever ≥ 38°C.

Polymerase chain reaction parameters were: 95 °C for 5 min; 35 cycles of denaturation at 95 °C for 30 s, annealing for 30 s, extension at 72 °C for variable time spans which depended upon the size of the amplifying fragment (1000 bases min−1); and a final extension at 72 °C for 5 min. Reactions were run on a MaxyGene Gradient thermocycler (Axygen).

In these experiments, polypropylene discs were exposed for variable time span and recovered, and the abundance of the present organism was assessed by different techniques.

Soil is defined as a three-dimensional body with properties that reflect the impact of mankind, climate, vegetation, fauna and relief on the soil's parent material over a variable time span (Deckers et al. 2001).

One of the most frequent is the hot flush, which presents in 75%85%% of these for a variable time span.

During the climacteric period, several symptoms exist that motivate women to seek medical advice; one of the most common is the hot flush, which presents in 75%85%% of these during a variable time span.

For instance, tissues have been fixed in formalin for variable times, spanning from few hours in Buell (1982) and Williams (1983), to several years (Glantz and Lewis 2000; Rosoklija et al. 2000) up to 55 (Gorazd et al. 2003).

We explored several options, but there was no significant (or important, in terms of magnitude) protection beyond 14 days, so a single indicator variable, identifying time spans within 14 days of a previous episode, was included as a covariate in the hazard component of models accounting for posttreatment prophylaxis.

Those that progress to overt malignancy do so over variable time frames spanning approximately 1 to 50 years.

Such categorisation of the data (calculation of the period variable and time span) was based on the same assumptions as those discussed in previous studies [ 12, 25- 27].