Peak knee flexion moment was not different between the low-soft, low-natural, and low-stiff conditions.
Peak knee flexion moment in the high-soft condition was larger than in the low-soft, low-natural, and low-stiff condition, but lower than in the high-natural and high-stiff condition, which were not different from each other (Figs. 1b and 2b).
Following the completion of the low and high trials under the natural instruction, all participants performed drop-landing trials under the soft and stiff instructions from the low and high heights (low-soft, low-stiff, high-soft, and high-stiff), which were arranged in random order.
The flexion moment peaks are temporally aligned at approximately 0.07 s for the low-stiff, high-soft, high-natural, and high-stiff conditions; while the peaks for the low-soft and low-natural conditions are temporally aligned at approximately 0.09 s Fig. 2 a Peak normalized knee joint compression force and b peak normalized external knee joint flexion moment.
To examine the potential order effect on knee joint compression and flexion moment, the first three consecutive trials of the third condition were compared with the last three consecutive trials for the sixth condition, across the low-soft, low-stiff, high-soft, and high-stiff condition blocks.
The fault zone appears as relatively stiff and low permeable zones intercalated with low stiffness and high fracture permeability zones that extend one to tens of meters from the fault following the initial properties contrasts and geometry of the sedimentary layers.
It's when she reaches the entrance to the living room that she sees them in there, twenty feet away, the dogs, heads low, tails stiff, coarse black fur mohawked up along their backs.
A thick, low-permeability, stiff clay layer divides the stratigraphy at the site into two units for evaluation.
The study shows that the effect of soil structure interaction may considerably increase such response at least for low-rise stiff structural system.
A modified version of the previous model, using the water table as the impermeable lower boundary, is used to evaluate the permeability of the low-permeability stiff clay layer (3.2 × 10− 10 cm2) and permeable sand (7.2 × 10− 7 cm2) beneath it.
