Under the conditions of loading axial pressure, and unloading confining pressure (LAUC), the experimental results showed that, when the loading rates of the axial pressure were 0.10 kN/s, 0.14 kN/s, and 0.18 kN/s, the triaxial strength of the coal samples were 37.39 MPa, 39.52 MPa, and 45.68 MPa, respectively, which had increased by 5.7% and 22.2% with the increase in the loading rates.
Resulting pressure drop after unloading of the volcano flank or dome can lead to increased degassing or can trigger phreatic eruptions.
The kick-off pressure for unloading the well depends on water zone pressure and valve setting depth, and can be lowered by reducing valve spacing.
By contrast, in haemorrhage a reduced venous return leads to a reduction in cardiac output, a fall in arterial pulse pressure and unloading of the arterial baroreceptors.
Peak LBNP (either -20 or -40 mmHg for 1 h) caused a further decline in CVP and narrowed pulse pressure, thus unloading both arterial and cardiopulmonary baroreceptors.
Buying up $1 billion worth of Angolan rough diamonds a year strained Leviev, who was under constant pressure to unload the minerals quickly.
Fiat Auto has suffered major losses and a slide in market share in recent years; the auto unit expects to report 2 billion euros (approximately $2 billion) in net losses this year, and the Agnelli family that controls the company has faced pressure to unload the carmaker.
b Current responses to loading and unloading pressure with different intensities.
To characterize the stability and recoverability more directly, Fig. 9b demonstrates the current responses to loading and unloading pressure with different intensities.
