While vulnerable to pathological, physiological, and pharmacological stressors, cardiac rhythm control is remarkably constant and robust.
Yet somewhat surprisingly, the rate of return on capital is remarkably constant over long periods (see chart, second panel).
Natural petroleum is a complex mixture of hundreds of different hydrocarbons, but its bulk composition is remarkably constant, about 85percentt carbon and 15percentt hydrogen.
The circumstances in which the art of criticism is practiced are always changing, but the state of the art is remarkably constant.
The superior division of the labyrinth is remarkably constant in form throughout the vertebrates except in the cyclostomes (e.g., hagfishes and lampreys), in which the canals and endings are reduced in number.
The climate is remarkably constant, the average temperature being about 79 °F (26 °C), with average minimums of 68 72 °F (20 22 °C), average maximums of 86 90 °F (30 32 °C), and temperature extremes of 59 °F (15 °C) and 93 °F (34 °C).
What Hansen and Rubin have learned, though, is that even at moments of extreme crisis the music of the world's mind is remarkably constant: there is a steady bass line of lust ("I am naked, I like my naked butt"), a middle range of appetite ("I like smoked salmon"), and a high tremolo of keening anxiety.
The discoveries of nitrogen and hydrogen in the latter half of the 18th century, added to the earlier discoveries of carbon dioxide and carbon monoxide, and the discovery that the composition of air is remarkably constant though it is a mixture, all supported Lavoisier's theory.
These reminded him of the age-profile curve for murderers that was found in 1988 by Martin Daly and Margot Wilson of McMaster University, in Canada.Dr Daly and Dr Wilson discovered that although the rate at which murders are committed varies greatly from place to place, the murderers themselves are predominantly male and their age profile is remarkably constant.
Root hairs provide an excellent model system with which to study this as their final cell size is remarkably constant under constant environmental conditions.
Although there is cell-to-cell variability in the maximum rate for decreasing apical area (0.3-9.5 μm(2)/min), the rate for completing ingression is remarkably constant (0.83 cells/min, r(2) > 0.99).
